Forming Insoluble Substance In Liquid Patents (Class 423/140)
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Patent number: 11414334Abstract: Methods and systems are provided for treating a contaminated environmental medium. In one example, the treatment includes adding a salt to the contaminated environmental medium to form a slurry. The slurry is heated to irreversibly precipitate a jarosite-group mineral incorporating contaminant cations and contaminant anions into its structure.Type: GrantFiled: October 8, 2021Date of Patent: August 16, 2022Assignee: United States Government, as represented by the Administrator of the U.S. EPAInventors: Kirk Gerald Scheckel, Ranju R. Karna, Charles R. Partridge, Karen D. Bradham, David James Thomas, Matthew R. Noerpel, Jennifer Lynn Goetz, Todd Peter Luxton
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Patent number: 11254999Abstract: Disclosed is a process for extracting or separating metal ions using a composition including: an ionic liquid of formula C+,?X, in which: C+ is an onium cation including at least one hydrocarbon chain R1 including from 6 to 20 carbon atoms; XP? is an anion of charge p, the ionic liquid having a solubility in water at 20° C. of at least 10 g/l; an acid; and water. The composition includes two liquid phases: a phase enriched in ionic liquid ?IL; and a phase enriched in water ?w, the pH of which is less than or equal to 4.7. The composition is useful for extracting a metal ion from an acidic aqueous medium including a metal ion, for separating metal ions from an aqueous medium including at least two metal ions or for purifying an acidic aqueous solution including a metal ion.Type: GrantFiled: November 13, 2017Date of Patent: February 22, 2022Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, INSTITUT POLYTECHNIQUE DE GRENOBLE, UNIVERSIDADE DE AVEIRO, UNIVERSITÉ SAVOIE MONT BLANCInventors: Nicolas Papaiconomou, Joao Manuel Da Costa E Araujo Pereira Coutinho, Matthieu Gras, Isabelle Billard
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Patent number: 11162158Abstract: Systems and methods for processing slag produced by iron and steel making processes are disclosed. The slag is treated produce a series of valued industrial products, such as metal oxides, metal carbonates, rare-earth metals, and water glass. The systems and methods also integrate slag processing with CO2 sequestration and flue gas desulphurization. Processing slag minimizes the land use for stockpiling or landfilling wastes produced from iron and steel making processes and protects the ground water underneath. Overall, the solid and gaseous emissions of an energy-intensive and highly polluted industrial process have been largely reduced, recycled and valorized in order to achieve a near zero-emission goal.Type: GrantFiled: September 19, 2016Date of Patent: November 2, 2021Inventors: Ah-Hyung Alissa Park, Xiaozhou Zhou
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Patent number: 11142809Abstract: A method is provided for extracting scandium values from a scandium bearing laterite ore. The method includes providing a portion of a scandium bearing laterite ore having an average particle size of no more than 200 mesh, leaching the ore to produce a leachate, and recovering scandium values from the leachate.Type: GrantFiled: February 10, 2016Date of Patent: October 12, 2021Assignee: Scandium International Mining Corp.Inventor: Willem P. C. Duyvesteyn
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Patent number: 11043636Abstract: A device includes: (1) a substrate; (2) a patterning coating covering at least a portion of the substrate, the patterning coating including a first region and a second region; and (3) a conductive coating covering the second region of the patterning coating, wherein the first region has a first initial sticking probability for a material of the conductive coating, the second region has a second initial sticking probability for the material of the conductive coating, and the second initial sticking probability is different from the first initial sticking probability.Type: GrantFiled: May 17, 2018Date of Patent: June 22, 2021Assignee: OTI Lumionics Inc.Inventors: Michael Helander, Zhibin Wang, Jacky Qiu
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Patent number: 10487374Abstract: Described is a method of recovering a metal from a substrate having a metal sulphide, metal oxide, or combination thereof, by contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidized metal or convert the complex metal oxide to a metal salt, contacting the oxidized metal or simple metal oxide with ammonium hydroxide to form soluble a ammine complex of the metal to obtain a leachate and residual solids; separating the leachate from the residual solids; and recovering the metal.Type: GrantFiled: March 28, 2014Date of Patent: November 26, 2019Assignee: Yava Technologies Inc.Inventor: Madhav Dahal
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Patent number: 10301705Abstract: A method for recovering Vanadium from a secondary source such as fly ash. Leaching is involved using single or combined acids such as hydrochloric and sulfuric in a temperature range of 20° C. and 100° C. The leaching is performed in sequential operations with recovery of Vanadium in the range of 92%. The recovered Vanadium can be formulated into an electrolyte for redox batteries.Type: GrantFiled: March 31, 2017Date of Patent: May 28, 2019Assignee: Energy, Science and Technology CorporationInventors: Kourosh Khaje, Maryam Mkhani
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Patent number: 10280481Abstract: A bioleaching and solvent extraction process with selective recovery of copper and zinc from polymetallic sulphide concentrates is described, comprising a bioleaching and ferric ion reducing process and a copper and zinc solvent extraction process. The bioleaching and ferric ion reducing process comprises a concentrates pulp conditioning step; a bioleaching step, wherein once the pulp is conditioned it is subjected to a bioleaching process using a plurality of bioreactors of the stirred-tank type with an air injection and diffusion system, which allows handling of a pulp density higher than 15%; a step of solid separation from a solution rich in metallic ions from the bioleaching step; and, a ferric ion reduction step, wherein the pulp from the previous step is subjected to a transformation step of ferric ions into ferrous ions.Type: GrantFiled: October 30, 2013Date of Patent: May 7, 2019Assignee: SERVICIOS CONDUMEX S.A. DE C.V.Inventors: Belisario Sanchez-Vazquez, Francisco Estrada-De Los Santos, Alfonso Lopez-Juarez, Eric David Buendia-Cachu, Ulises Monter-Valenzuela
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Patent number: 10125025Abstract: There is provided a method for producing (high purity) hematite for ironmaking, in a process where a mineral acid and an oxidizing agent are added to an ore containing iron and a valuable metal and then the valuable metal is leached under high temperatures and high pressures, comprises the steps of: (1) a high pressure leach step; (2) a preliminary neutralization step; (3) a solid-liquid separation step 1; (4) a neutralization step 1; (5) a neutralization step 2; (6) a solid-liquid separation step 3; (7) seed crystal addition treatment; (8) a solid-liquid separation step 2; and (9) a firing step.Type: GrantFiled: January 30, 2015Date of Patent: November 13, 2018Assignee: Sumitomo Metal Mining Co. Ltd.Inventors: Go Ohara, Yasumasa Kan, Masaki Imamura
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Patent number: 10125408Abstract: Provided is a method for manufacturing a nickel and cobalt mixed sulfide that is capable of stabilizing nickel and cobalt concentrations in the sulfidation end solution at low levels and of limiting decreases in nickel and cobalt recovery rates without increasing cost even when processing with a sulfuric acid acidic solution containing nickel and cobalt and a high iron ions concentration as the sulfidation start solution. This method generates a sulfidation reaction by blowing hydrogen sulfide gas into a sulfuric acid acidic solution comprising nickel and cobalt to obtain a mixed sulfide, wherein: the sulfuric acid acidic solution, which is the sulfidation start solution, contains iron ions at a rate of 1.0-4.0 g/L; and the sulfidation reaction is generated by blowing hydrogen sulfide gas into the sulfidation start solution and adding sodium hydrogensulfide (NaHS) obtained by absorbing hydrogen sulfide gas-containing exhaust gas, generated by the sulfidation, in an alkaline solution.Type: GrantFiled: December 8, 2015Date of Patent: November 13, 2018Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Tomoaki Yoneyama, Hiroyuki Mitsui, Manabu Enomoto
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Patent number: 10017835Abstract: Provided is a method for producing nickel sulfide from an acidic sulfuric acid solution containing nickel, which is capable of suppressing particle diameters of nickel sulfide obtained thereby. The present invention is a method for producing nickel sulfide by causing a sulfurization reaction by blowing a hydrogen sulfide gas into an acidic sulfuric acid solution containing nickel, wherein: nickel sulfide having particle diameters of 5-20 ?m and serving as seed crystals is added into an acidic sulfuric acid solution having a nickel concentration of 0.5-5.0 g/L in an amount of 40-500% by mass relative to the amount of nickel contained in the acidic sulfuric acid solution; and a hydrogen sulfide gas is blown into the acidic sulfuric acid solution, into which the seed crystals have been added, while setting the amount of the hydrogen sulfide gas blown in to be within the range of 0.30-0.85 Nm3/kg-Ni.Type: GrantFiled: December 1, 2015Date of Patent: July 10, 2018Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Shinichiro Nakamura, Osamu Nakai, Hiroyuki Mitsui, Keisuke Shibayama
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Patent number: 9945007Abstract: The present invention provides a hydrometallurgical method for nickel oxide ore, wherein the plant can be smoothly started up without imposing a load onto a filter cloth for a separation treatment of zinc sulfide, and the amount of residual zinc in a mother liquor for nickel recovery can be reduced to 1 mg/L. In the plant start-up after the completion of a periodic inspection, a post-neutralization solution is controlled to return to a neutralization reaction tank via circulation piping by adjustment of a switching valve in flow piping without sulfurizing post-neutralization solution. When the flow rate and/or the temperature of the post-neutralization solution circulated reaches a predetermined value, a sulfurization treatment is applied to the post-neutralization solution in the dezincification reaction tank to form zinc-sulfide-containing mother liquor for nickel recovery and adjust the switching valve.Type: GrantFiled: March 1, 2013Date of Patent: April 17, 2018Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Hiroyuki Mitsui, Osamu Nakai, Satoshi Matsubara
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Patent number: 9914700Abstract: Disclosed herein are methods for recovering phosphorus-containing ligand from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the phosphorus-containing ligand.Type: GrantFiled: June 25, 2015Date of Patent: March 13, 2018Assignee: INVISTA NORTH AMERICA S.A R.L.Inventor: William J. Tenn, III
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Patent number: 9902624Abstract: A preparation method for a composite ferrate reagent. 1, Weigh raw materials; 2, evenly mix a ferric salt, an activating agent and an alkali maintaining agent and heat the mixture; 3, add an oxidant solution; and 4, cool and mix the solution with water. The technical problems of high energy consumption, low yield and poor ferrate product stability of the existing method for preparing ferrate are solved. The obtained product can be stably stored, and the yield of the ferrate reaches 60% to 95%.Type: GrantFiled: April 30, 2014Date of Patent: February 27, 2018Inventors: Jun Ma, Yulei Liu, Lu Wang, Xiaodan Zhao, Qingliang Liu
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Patent number: 9677155Abstract: The invention provides a method for recovering scandium from scandium-containing intermediate products, formed during hydrometallurgical processing of scandium-containing feed materials, including: (a) leaching of the scandium-containing intermediate products with a suitable acid at a controlled pH selected to maximize scandium extraction and minimize the co-extraction of impurities, (b) solid/liquid separation, to obtain a scandium-containing leach solution; (c) selective precipitation of the scandium at a controlled pH from the scandium-containing leach solution using a suitable base, (d) solid/liquid separation, to obtain an upgraded scandium concentrate and a barren solution for return to the hydrometallurgical process. A further upgraded scandium concentrate can be obtained by (e) alkaline leaching of the upgraded scandium concentrate for additional removal of impurities, and (f) solid/liquid separation to obtain a further upgraded scandium concentrate and impurities-containing base solution.Type: GrantFiled: April 21, 2014Date of Patent: June 13, 2017Assignee: VALE S.A.Inventors: Indje Mihaylov, Ryan Peterson, Avinash Singhal, Christopher Massey
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Patent number: 9653732Abstract: A process for producing a phosphate by: introducing oxidic metal(II)-, metal(III)- metal(IV) or compounds with mixed oxide stages selected from hydroxides, oxides, oxide-hydroxides, oxide-hydrates, carbonates and hydroxide carbonates, of at least one of the metals Mn, Fe, Co and Ni with the elemental forms or alloys of at least one of the metals Mn, Fe, Co and/or Ni into an aqueous medium containing phosphoric acid, and reacting the oxidic metal compounds with elemental forms or alloys of the metals to obtain divalent metal ions, removing solid substances, producing an alkali metal phosphate receiver solution with a pH-value of 5 to 8 and metering the aqueous solution into the receiver solution and at the same time metering a basic aqueous alkali hydroxide solution that the pH-value of the resulting reaction mixture is kept in the region of 5 to 8 to precipitate the desired phosphate.Type: GrantFiled: December 21, 2012Date of Patent: May 16, 2017Assignee: Chemische Fabrik Budenheim KGInventors: Gunnar Buehler, Christian Graf, Andreas Jazdanian, Kilian Schwarz, Michael Rapphahn
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Patent number: 9561972Abstract: The present invention aims at providing a method for effluent treatment, which enables the separation and recovery of a high-density and high-concentration aluminum sediment from waste water that is discharged in the smelting of a nickel oxide ore and contains aluminum ions. In the present invention, an alkali and an iron-containing solid are added to waste water containing aluminum ions to form a slurry, and the slurry is allowed to stand to perform solid-liquid separation, whereby an aluminum sediment and an effluent is formed.Type: GrantFiled: June 17, 2013Date of Patent: February 7, 2017Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Yasuo Yoshii, Keisuke Shibayama, Yoji Kyoda, Yoshitomo Ozaki, Osamu Nakai, Hiroyuki Mitsui
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Patent number: 9343738Abstract: An active electrode material for electrochemical devices such as lithium ion batteries includes a lithium transition metal oxide which is free of sodium and sulfur contaminants. The lithium transition metal oxide is prepared by calcining a mixture of a lithium precursor and a transition metal oxalate. Electrochemical devices use such active electrodes.Type: GrantFiled: February 4, 2014Date of Patent: May 17, 2016Assignee: UCHICAGO ARGONNE, LLCInventors: Ilias Belharouak, Khalil Amine
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Patent number: 9315393Abstract: A hydrogen chloride removal process includes (i) contacting in a reactor an aqueous solution, which includes one or more Fe2+-compounds, with a fluid, which includes an oxidizing agent, hydrochloric acid gas and optionally chlorine gas; and (ii) oxidizing the Fe2+-compounds to Fe3+-compounds, thereby converting the fluid to an exhaust gas, which has a reduced hydrochloric acid content.Type: GrantFiled: May 22, 2014Date of Patent: April 19, 2016Assignee: Tessenderlo Chemie NVInventor: Rudy Peeters
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Patent number: 9057116Abstract: The invention relates to the hydrometallurgical treatment of laterite ores in order to recover valuable metals. More specifically, the invention presented relates to a method for improving precipitation and solid-liquid separation in conjunction with the leaching of laterite ores. According to the method the slurry exiting the leaching of laterite ores is neutralized, after which part of the slurry is routed to solid-liquid separation. Iron is precipitated from the solid-liquid separation overflow by neutralizing the solution and the solution that is formed, which includes jarosite seeds, is routed to an appropriate point in the process to control the precipitation of iron and to enhance the filterability of the solids.Type: GrantFiled: February 21, 2011Date of Patent: June 16, 2015Assignee: OUTOTEC OYJInventors: Teppo Riihimäki, Jaakko Leppinen, Mikko Ruonala, Liisa Haavanlammi
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Patent number: 9028710Abstract: The invention is directed to a pulverulent compound of the formula NiaM1bM2cOx(OH)y where M1 is at least one element selected from the group consisting of Fe, Co, Zn, Cu and mixtures thereof, M2 is at least one element selected from the group consisting of Mn, Al, Cr, B, Mg, Ca, Sr, Ba, Si and mixtures thereof, 0.3?a?0.83, 0.1?b?0.5, 0.01?c?0.5, 0.01?x?0.99 and 1.01?y?1.99, wherein the ratio of tapped density measured in accordance with ASTM B 527 to the D50 of the particle size distribution measured in accordance with ASTM B 822 is at least 0.2 g/cm3·?m. The invention is also directed to a method for the production of the pulverulent compound and the use as a precursor material for producing lithium compounds for use in lithium secondary batteries.Type: GrantFiled: July 23, 2008Date of Patent: May 12, 2015Assignee: H.C. Starck GmbHInventors: Matthias Jahn, Gerd Maikowske, Stefan Malcus, Juliane Meese-Marktscheffel, Armin Olbrich, Rüdiger Zertani
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Patent number: 8974754Abstract: The method for obtaining an acid solution containing nickel is obtained by treating a positive electrode material of a nickel-metal hydride battery. The method includes a water-washing step, wherein a positive electrode material of a nickel-metal hydride battery is water-washed by adding water, and then separated to form a positive electrode material after water-washing and a water-washed slurry. An acid-washing step then is performed, wherein an acid is added and mixed into the positive electrode material obtained after water-washing in the water-washing step, and, separation is performed to form a positive electrode material after acid-washing and an acid-washed slurry. A dissolution step is performed wherein the positive electrode material obtained in the acid-washing step is separated into a nickel solution and a dissolution residue by adding any one of an acid and an oxidizing agent.Type: GrantFiled: November 22, 2011Date of Patent: March 10, 2015Assignee: Sumitomo Metal Mining Co. Ltd.Inventors: Naoko Kikuta, Satoshi Asano, Masatoshi Takano
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Publication number: 20150023851Abstract: Provided is a method for producing hematite for ironmaking, wherein high purity hematite, which can be used as an iron-making raw material, is cheaply and efficiently recovered from a leach residue containing iron oxide produced by a high pressure acid leach (HPAL) process. This method for producing (high purity) hematite for ironmaking in a process of adding a mineral acid and an oxidant to ore containing iron and valuable metals and then leaching the valuable metals under high pressure and high temperature includes (1) a neutralization step of adding a neutralizer to a leachate obtained under high pressure and high temperature to form a leach slurry, (2) a solid-liquid separation step of separating the leach slurry obtained in the neutralization step (1) into a leach residue and the leachate, and (3) a classification step of classifying the leach residue into the hematite and gangue components.Type: ApplicationFiled: January 16, 2013Publication date: January 22, 2015Inventors: Hideki Sasaki, Yoshitomo Ozaki, Manabu Enomoto, Hirofumi Shouji, Tatsuya Higaki, Hiroyuki Mitsui, Yasumasa Kan
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Publication number: 20150023849Abstract: The present invention provides a hydrometallurgical method for nickel oxide ore, wherein the plant can be smoothly started up without imposing a load onto a filter cloth for a separation treatment of zinc sulfide, and the amount of residual zinc in a mother liquor for nickel recovery can be reduced to 1 mg/L. In the plant start-up after the completion of a periodic inspection, a post-neutralization solution is controlled to return to a neutralization reaction tank via circulation piping by adjustment of a switching valve in flow piping without sulfurizing post-neutralization solution. When the flow rate and/or the temperature of the post-neutralization solution circulated reaches a predetermined value, a sulfurization treatment is applied to the post-neutralization solution in the dezincification reaction tank to form zinc-sulfide-containing mother liquor for nickel recovery and adjust the switching valve.Type: ApplicationFiled: March 1, 2013Publication date: January 22, 2015Inventors: Hiroyuki Mitsui, Osamu Nakai, Satoshi Matsubara
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Publication number: 20150023850Abstract: A method for improving the filterability in separating a zinc sulfide, produced by applying sulfurization treatment to a post-neutralization solution containing zinc together with nickel and cobalt in a dezincification step in a hydrometallurgical process for nickel oxide ore. The method includes a neutralization reaction step of neutralizing leachate in a neutralization tank, a separation step of separating neutralized slurry into a neutralized sediment and a post-neutralization solution by adding flocculant to the neutralized slurry, a measuring step of measuring the viscosity of the post-neutralization solution, a step of storing the post-neutralization solution in a storage tank, and a transfer step of transferring the stored post-neutralization solution to a dezincification reaction tank used in a dezincification step subsequent to a neutralization step.Type: ApplicationFiled: March 6, 2013Publication date: January 22, 2015Applicant: SUMITOMO METAL MINING Co., LtdInventors: Hiroyuki Mitsui, Osamu Nakai, Satoshi Matsubara
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Publication number: 20150000466Abstract: A process for the production of a high grade nickel product including the steps of: a) providing at least one heap of a nickeliferous lateritic ore and leaching that heap with a suitable lixiviant, preferably sulfuric acid solution, to produce a nickel rich pregnant leach solution (PLS); b) subjecting the PLS to an impurity removal step to precipitate ferric iron, and preferably partially precipitate aluminium and chromium as hydroxides; and c) recovering a high grade nickel product from the PLS preferably by either nickel ion exchange, solvent extraction, electrowinning, conventional multi-stage neutralization, pyrohydrolysis or sulfidation.Type: ApplicationFiled: February 13, 2013Publication date: January 1, 2015Applicant: BHP BILLITON SSM DEVELOPMENT PTY LTDInventors: Houyuan Liu, Omar Yesid Caceres Hernandez, Renato Antonio Loaiza Aguilar, Carolina Isabel Meneses Rodriguez, Ruben Rangel De Hoyos, Illich Alvarez Mercado
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Patent number: 8920773Abstract: Various embodiments provide a process roasting a metal bearing material under oxidizing conditions to produce an oxidized metal bearing material, roasting the oxidized metal bearing material under reducing conditions to produce a roasted metal bearing material, leaching the roasted metal hearing material in a basic medium to yield a pregnant leach solution, conditioning the pregnant leach solution to thrill a preprocessed metal bearing material; and leaching the preprocessed metal bearing material in acid medium.Type: GrantFiled: December 17, 2012Date of Patent: December 30, 2014Assignee: Freeport Minerals CorporationInventors: Joanna M. Robertson, Thomas R. Bolles, Wayne W. Hazen, Lawrence D. May, Jay C. Smith, David R. Baughman
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Patent number: 8916115Abstract: A nickel recovery loss reduction method that makes it possible to reduce nickel recovery loss by lowering the concentration of fine floating solid components in overflow liquid in precipitating and separating treatments, and consequently to further reduce a nickel recovery loss, a hydrometallurgical method for nickel oxidized ore to which the nickel recovery loss reduction method is applied, and a sulfurizing treatment system. The present invention is a nickel recovery loss reduction method in a sulfurizing step for blowing hydrogen sulfide gas into a nickel containing sulfuric acid aqueous solution to generate nickel-containing sulfides and a barren liquid, and the nickel-containing sulfides with the average particle size adjusted to a predetermined size or larger are added as seed crystals to the sulfuric acid aqueous solution. It is more preferable to adjust the average particle size of the nickel sulfides to be added as seed crystals to 55 ?m or more.Type: GrantFiled: August 9, 2012Date of Patent: December 23, 2014Assignee: Sumitomo Metal Mining Co., Ltd.Inventors: Satoshi Matsubara, Osamu Nakai, Hiroyuki Mitsui
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Publication number: 20140369904Abstract: There are provided processes for preparing alumina. These processes can comprise leaching an aluminum-containing material with HCl so as to obtain a leachate comprising aluminum ions and a solid, and separating said solid from said leachate; reacting said leachate with HCl so as to obtain a liquid and a precipitate comprising said aluminum ions in the form of AlCl3, and separating said precipitate from said liquid; and heating said precipitate under conditions effective for converting AlCl3 into Al2O3 and optionally recovering gaseous HCl so-produced. These processes can also be used for preparing various other products such as hematite, MgO, silica and oxides of various metals, sulphates and chlorides of various metals, as well as rare earth elements, rare metals and aluminum.Type: ApplicationFiled: September 17, 2012Publication date: December 18, 2014Inventors: Richard Boudreault, Joeel Fournier, Denis Primeau, Marie-Maxime Labrecque-Gilbert
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Patent number: 8888892Abstract: A method for separating nickel, cobalt and a rare earth element from a material containing positive and negative electrode active materials of a nickel-metal hydride battery includes mixing a material containing positive and negative electrode active materials with a sulfuric acid solution and dissolving therein, and then separating a leachate from a residue; adding an alkali metal sulfate to the leachate to obtain a mixed precipitate of double sulfate of rare earth elements, and a rare-earth-element-free solution; and adding a sulfurizing agent to the rare-earth-element-free solution to separate a nickel and cobalt sulfide raw material and a residual solution.Type: GrantFiled: November 16, 2010Date of Patent: November 18, 2014Assignee: Sumitomo Metal Mining Co., Ltd.Inventors: Naoko Kikuta, Satoshi Asano, Masatoshi Takano
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Publication number: 20140308182Abstract: A method for concentrating metal chlorides in and separating same from an iron(III) chloride-containing hydrochloric acid solution is described, wherein iron is precipitated from the solution as iron oxide, preferably haematite and filtered off in a filtration device, and the now further concentrated non-hydrolysable metal chlorides are removed from at least a part of the hydrochloric acid filtrate.Type: ApplicationFiled: December 12, 2012Publication date: October 16, 2014Applicant: SMS SIEMAG PROCESS TECHNOLOGIES GMBHInventors: Herbert Weissenbaeck, Dieter Vogl
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Publication number: 20140308183Abstract: The method for obtaining an acid solution containing nickel is obtained by treating a positive electrode material of a nickel-metal hydride battery. The method includes a water-washing step, wherein a positive electrode material of a nickel-metal hydride battery is water-washed by adding water, and then separated to form a positive electrode material after water-washing and a water-washed slurry. An acid-washing step then is performed, wherein an acid is added and mixed into the positive electrode material obtained after water-washing in the water-washing step, and, separation is performed to form a positive electrode material after acid-washing and an acid-washed slurry. A dissolution step is performed wherein the positive electrode material obtained in the acid-washing step is separated into a nickel solution and a dissolution residue by adding any one of an acid and an oxidizing agent.Type: ApplicationFiled: November 22, 2011Publication date: October 16, 2014Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Naoko Kikuta, Satoshi Asano, Masatoshi Takano
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Publication number: 20140301920Abstract: There are provided methods for preparing hematite. For example, the method can comprise reacting a basic aqueous composition comprising the iron and the aluminum with hematite under conditions suitable for at least partially converting the iron into hematite under the form of a precipitate, thereby obtaining a liquid phase and a solid phase; and separating the liquid phase from the solid phase.Type: ApplicationFiled: June 4, 2012Publication date: October 9, 2014Applicant: ORBITE ALUMINAE INC.Inventors: Richard Boudreault, Joël Fournier, Laury Gauthier
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Publication number: 20140286840Abstract: The present invention refers to a method being easy to recover metals including nickel and aluminum from waste aluminum catalysts, thereby entirely promoting the recovering rate. Said method comprises: preparing and roasting a waste aluminum catalyst with sodium salts, and then obtaining a first solution comprising vanadium and molybdenum, and a dreg comprising nickel and aluminum through leaching and filtrating; collecting and mixing the dreg with alkali powders to obtain a mixture of the dreg and alkali powders, roasting the mixture at 300 to 1000° C. with aluminum in the dreg reacting with hydroxyl generated from the roasting of mixture and further generating aluminum hydroxide, and then obtaining a second solution comprising aluminum and a concentrate having nickel through another leaching and filtrating; and recovering aluminum from the second solution and recovering nickel from the concentrate.Type: ApplicationFiled: May 7, 2013Publication date: September 25, 2014Inventor: Ping-Tao WU
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Publication number: 20140286841Abstract: There are provided methods for separating iron ions from aluminum ions contained in an acidic composition. The methods comprise reacting the acidic composition with a basic aqueous composition having a pH of at least 10.5 so as to obtain a precipitation composition, maintaining the precipitation composition at a pH above 10.5 so as to cause precipitation of the iron ions, at least substantially preventing precipitation of the aluminum ions, and to obtain a mixture comprising a liquid portion and a solid portion; and separating the liquid portion from the solid portion. There are also provided methods for treating an acidic composition comprising iron ions and aluminum ions. Such methods can be useful for preparing products such as alumina, aluminum, hematite etc.Type: ApplicationFiled: July 18, 2012Publication date: September 25, 2014Applicant: ORBITE ALUMINAE INC.Inventors: Richard Boudreault, Joël Fournier, Laury Gauthier
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Publication number: 20140262817Abstract: Various embodiments provide a method comprising leaching a cobalt bearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, and forwarding the solids to a second leaching operation.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: FREEPORT-MCMORAN CORPORATIONInventors: Nitin Goel, Ari Gabriel Partanen, Wayne W. Hazen, Phil Rooke
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Publication number: 20140264185Abstract: The present invention relates to a method for recycling LiFePO4, which is an olivine-based cathode material for a lithium secondary battery. The present invention is characterized in that a cathode material including LiFePO4 is synthesized using, as precursors, amorphous FePO4.XH2O and crystalline FePO4.2H2O (metastrengite) obtained by chemically treating LiFePO4 as an olivine-based cathode material for a lithium secondary battery, which is produced from a waste battery. Since a cathode fabricated from the LiFePO4 cathode material synthesized according to the present invention does not deteriorate the capacity, output characteristics, cycle efficiency and performance of the secondary battery and the cathode material of the lithium secondary battery may be recycled, the secondary battery is economically efficient.Type: ApplicationFiled: July 17, 2013Publication date: September 18, 2014Inventors: Hyung Sun KIM, Byung Won CHO, Hwa Young LEE, Eun Jung SHIN, Soo KIM, Kyung Yoon CHUNG
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Patent number: 8815186Abstract: Nickel compositions for use in manufacturing nickel metal compositions, and specifically to methods of making basic nickel carbonates used to produce nickel metal compositions are disclosed. By varying the molar ratios of carbonates and bicarbonates to nickel salts, the methods provide basic nickel carbonates that produce superior nickel-containing solids that react more effectively with phosphorous-containing ligands. The phosphorous containing ligands can be both monodentate and bidentate phosphorous-containing ligands.Type: GrantFiled: December 15, 2010Date of Patent: August 26, 2014Assignee: INVISTA North America S.a.r.l.Inventor: John J. Ostermaier
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Patent number: 8808660Abstract: The present invention relates to a method of precipitation of metal ions. Mineral(s), oxide(s), hydroxide(s) of magnesium and/or calcium are adopted as raw materials, and the raw material(s) is processed through at least one step of calcination, slaking, or carbonization to produce aqueous solution(s) of magnesium bicarbonate and/or calcium bicarbonate, and then the solution(s) is used as precipitant(s) to deposit rare earth, such as nickel, cobalt, iron, aluminum, gallium, indium, manganese, cadmium, zirconium, hafnium, strontium, barium, copper and zinc ions. And at least one of metal carbonates, hydroxides or basic carbonates is obtained, or furthermore the obtained products are calcined to produce metal oxides. The invention takes the cheap calcium and/or magnesium minerals or their oxides, hydroxides with low purity as raw materials to instead common precipitants such as ammonium bicarbonate and sodium carbonate etc.Type: GrantFiled: February 9, 2010Date of Patent: August 19, 2014Assignee: Grirem Advanced Materials Co., Ltd.Inventors: Xiaowei Huang, Zhiqi Long, Hongwei Li, Dali Cui, Xinlin Peng, Guilin Yang, Yongke Hou, Chunmei Wang, Shunli Zhang
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Patent number: 8802042Abstract: A method for recovering base metal values from oxide ore is provided, where the ore includes a first group metal selected from nickel, cobalt and copper. The method includes reducing ore particle size to suit the latter unit operation, favoring contact for the metal elements, contacting the ore with ferric or ferrous chloride, hydrated or anhydrous, to produce a mix of ore and iron (II or III) chloride subjecting the mixture of the ore and ferric or ferrous chloride to enough energy to decompose the chlorides into hydrochloric acid and a iron oxides from the second group, forming their respective chlorides, selectively dissolve the produced base metal chlorides, leaving the metal as oxides and in the solid state, and recovering the dissolved base metal values from aqueous solution.Type: GrantFiled: July 14, 2010Date of Patent: August 12, 2014Assignee: Vale S.A.Inventors: Antonio Clareti Pereira, Tiago Valentim Berni
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Patent number: 8802041Abstract: There is provided a process for decontaminating and converting volumetrically contaminated radioactive metals, especially nickel, and recovering a decontaminated metal hydroxide or metal carbonate. The process includes the use of hydrogen peroxide to oxidize and remove nucleotides.Type: GrantFiled: January 24, 2014Date of Patent: August 12, 2014Assignee: Toxco, Inc.Inventors: W. Novis Smith, David S. Eaker
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Patent number: 8790516Abstract: The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crystalline scorodite.Type: GrantFiled: February 19, 2010Date of Patent: July 29, 2014Assignee: Outotec OyjInventors: Mikko Ruonala, Jaakko Leppinen, Ville Miettinen
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Patent number: 8758479Abstract: A process is described for the recovery of nickel and/or cobalt from laterite or partially oxidized lateritic ores having a substantial proportion of the iron present in the ferrous state. The process includes providing a laterite or partially oxidized laterite ore wherein a substantial proportion of the iron present in the ore is in the ferrous state; acid leaching the ore to provide a product leach solution containing at least ferrous iron, nickel and cobalt together with acid soluble impurities; and recovering the nickel and cobalt from the product leach solution with a selective ion exchange resin in an ion exchange process leaving the ferrous iron and other acid soluble impurities in the raffinate.Type: GrantFiled: May 12, 2008Date of Patent: June 24, 2014Assignee: BHP Billiton SSM Development Pty LtdInventors: Omar Yesid Caceres Hernandez, Harald Muller, Graham Reynolds, Houyuan Liu
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Publication number: 20140170040Abstract: A nickel recovery loss reduction method that makes it possible to reduce nickel recovery loss by lowering the concentration of fine floating solid components in overflow liquid in precipitating and separating treatments, and consequently to further reduce a nickel recovery loss, a hydrometallurgical method for nickel oxidized ore to which the nickel recovery loss reduction method is applied, and a sulfurizing treatment system. The present invention is a nickel recovery loss reduction method in a sulfurizing step for blowing hydrogen sulfide gas into a nickel containing sulfuric acid aqueous solution to generate nickel-containing sulfides and a barren liquid, and the nickel-containing sulfides with the average particle size adjusted to a predetermined size or larger are added as seed crystals to the sulfuric acid aqueous solution. It is more preferable to adjust the average particle size of the nickel sulfides to be added as seed crystals to 55 ?m or more.Type: ApplicationFiled: August 9, 2012Publication date: June 19, 2014Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Satoshi Matsubara, Osamu Nakai, Hiroyuki Mitsui
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Patent number: 8747678Abstract: The invention provides hydrometallurgical processes by which dissolved nickel may be removed from water at ambient temperature and low system pressure.Type: GrantFiled: March 30, 2007Date of Patent: June 10, 2014Assignee: Bioteq Environmental Technologies Inc.Inventors: Michael Bratty, Rick Lawrence, David Kratochvil
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Patent number: 8668761Abstract: A process for processing metallurgic residue that is obtained from electric steelworks dust, ESD, essentially containing iron and zinc in the form of zinc oxide and zinc ferrites, as well as a processing of the blast-furnace slags, BFS, and a combination with a synergy effect.Type: GrantFiled: May 29, 2009Date of Patent: March 11, 2014Assignee: VB2MInventors: Eric Marcadier, Laurent Rizet, Valerie Bouclier
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Patent number: 8652427Abstract: Method for preparing material containing amorphous iron oxide hydroxide, the method including: mixing an aqueous ferrous salt solution and hydroxide solution or solid hydroxides at the temperature of below 70° C., filtering the reaction solution, washing the filter cake, preparing suspension solution of the filter cake, blowing an oxygen-containing gas into the suspension solution to oxidize the ferrous iron, and then filtering and drying. The material after being used as desulfurization agent can be repeatedly regenerated through oxidation in an oxygen-containing gas. A desulfurization agent, and methods for preparation and repeated regeneration thereof. The desulfurization agent contains the material and organic binders, and may also include a small amount of additives. The organic binders are selected from sodium carboxymethyl cellulose, sesbania powder, and cellulose powder, and the additives are selected from sawdust, rice husk power, and bran.Type: GrantFiled: June 30, 2011Date of Patent: February 18, 2014Assignee: Beijing Sanju Environmental Protection and New Material Co., Ltd.Inventors: Zhenyi Liu, Yongsheng Yu, Ke Lin
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Patent number: 8647600Abstract: Methods for preparing a composition containing amorphous iron oxide hydroxide. Methods for regeneration of the amorphous iron oxide hydroxide after it has been used as desulfurizer. Regenerable desulfurizer with high sulfur capacity containing amorphous iron oxide hydroxide, not less than 88% w/w, and organic binder not less than 7% w/w. The organic binder is sodium carboxymethylcellulose, sesbania powder, cellulose powder, or a mixture thereof. A method for preparing the desulfurizer. A method for regenerating the waste agent produced after the desulfurizer and the composition containing the desulfurizer are used as desulfurizer. This method allows the desulfurizer and the composition containing the desulfurizer to be regenerated and reused avoiding the need for landfill disposal and environmental pollution.Type: GrantFiled: June 30, 2011Date of Patent: February 11, 2014Assignee: Beijing Sanju Environmental Protection and New Material Co., Ltd.Inventors: Zhenyi Liu, Ke Lin, Qunyang Gao
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Patent number: 8628740Abstract: A method of processing waste iron chloride solution including ferrous chloride, ferric chloride or mixtures thereof and optionally free hydrochloric acid, includes concentrating waste iron chloride solution into concentrated liquid having iron chloride concentration of at least 30%-40% by weight; optionally oxidizing ferrous chloride in the concentrated liquid from the concentration step to ferric chloride providing liquid containing ferric chloride; hydrolyzing the liquid containing ferric chloride from the oxidation step at 155-350° C.Type: GrantFiled: June 18, 2009Date of Patent: January 14, 2014Assignee: SMS Siemag AktiengesellschaftInventors: Nobuyoshi Takahashi, Osama Taki, Herbert Weissenbaeck, Dieter Vogl
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Patent number: 8609056Abstract: Iron(III) orthophosphate of the general formula FePO4×nH2O (n?2.5), prepared by a process in which iron(II)-, iron(III)- or mixed iron(II, III) compounds selected from among hydroxides, oxides, oxidehydroxides, oxide hydrates, carbonates and hydroxidecarbonates are reacted with phosphoric acid having a concentration in the range from 5% to 50%, any iron(II) present after the reaction is converted into iron(III) by addition of an oxidant and solid iron(III) orthophosphate is separated off from the reaction mixture.Type: GrantFiled: October 6, 2008Date of Patent: December 17, 2013Assignee: Chemische Fabrik Budenheim KGInventors: Ruediger Wissemborski, Gunnar Buehler, Joachim Markmann, David Kuemmet