Carbonating Patents (Class 423/165)
  • Patent number: 10723935
    Abstract: Methods including precipitated and mined calcium carbonate lost circulation materials for use in subterranean formation operations. The precipitated calcium carbonate lost circulation materials are formed under a chosen set of precipitation conditions, including in situ in a subterranean formation. The mined calcium carbonate lost circulation materials are obtained in a desired morphological form under naturally occurring mined conditions. The precipitated and mined calcium carbonate lost circulation materials may be needle-shaped aragonite having an aspect ratio of about 1.4 to about 15.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: July 28, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Dale E. Jamison, Cato Russell McDaniel, Xiangnan Ye, Sharath Savari, Chesnee Lae Davis, Jonathan Paul Walker
  • Patent number: 10486980
    Abstract: Process for manufacture of purified alkaline earth metal carbonate The invention concerns a process for the manufacture of a purified alkaline earth metal carbonate, the purified alkaline earth metal carbonate obtainable by said process, and its use in the manufacture of products and devices in the field of electronics and glass. The process comprises the steps of calcinating the alkaline earth metal carbonate with an aqueous phase comprising a salt. The alkaline earth metal carbonate might be barium carbonate or strontium carbonate.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: November 26, 2019
    Assignee: SOLVAY SA
    Inventors: Ferdinand Hardinghaus, Erik Bonmann, Achim Engels
  • Patent number: 10265693
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: April 23, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Takahiro Fukuoka, Junichi Nagase, Shusaku Shibata, Tatsuki Nagatsuka, Saori Yamamoto
  • Patent number: 9688558
    Abstract: A method for sequestrating carbon dioxide in the ocean of the present invention coverts carbon dioxide into a high concentration of bicarbonate ions by using a neutralization method using calcium oxide commonly contained in alkaline industrial waste, prepares elution water for stably containing bicarbonate ions even when making contact with the atmosphere through aeration, and discharges the elution water into an area of the ocean of a relatively shallow depth to sequestrate carbon dioxide. According to the present invention, the present invention is a carbon dioxide storage method which uses alkaline industrial waste to carry out carbon dioxide ocean sequestration at relatively low cost, and can sequestrate carbon dioxide for a long time while minimizing bad environmental influences such as ocean acidification and the like, and is thus environmentally friendly.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: June 27, 2017
    Assignee: KOREA ELECTRIC POWER CORPORATION
    Inventors: Jung Hyun Lee, Jin Hyeok Choi, Joon Woo Gil
  • Patent number: 9677154
    Abstract: A method of mineralizing calcium from industrial waste comprising extracting calcium ions from a suspension of calcium rich granular particles and aqueous ammonium chloride to form a calcium-rich first fraction and a heavy second fraction. The heavy second fraction is separated from the first fraction and the calcium-rich first fraction is carbonated with a gas comprising carbon dioxide to form a suspension of precipitated calcium carbonate and aqueous ammonium chloride. The precipitate is separated from the aqueous ammonium chloride by centrifugal means and the separated heavy second fraction comprises an enriched weight percent of iron.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: June 13, 2017
    Assignee: COREX MATERIALS, INC.
    Inventor: Frank A. Karbarz
  • Patent number: 9580337
    Abstract: A pressurized forward osmotic separation process is disclosed. Generally there are two processes described. One process involves the concentration of a target solute in the first solution; the other process involves the extraction of a solvent from a first solution both by a second solution comprising of water and soluble gas or water, soluble gas, and a compound by creating an osmotic concentration gradient across the semi permeable membrane. The first solution is under pressure from an inert gas and the second solution is under pressure from a soluble gas with equal system pressures greater than 1 atmosphere. The increase or decrease of partial pressure of the soluble gas in the second solution increases or decreases the chemical potential of the second solution to achieve different solution properties. The soluble gas may be carbon dioxide and the compound may be magnesium hydroxide.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: February 28, 2017
    Assignee: Lehigh University
    Inventors: Arup SenGupta, Robert Creighton, Ryan Smith
  • Patent number: 9440189
    Abstract: Processes, methods, system and uses in relation to chemical sequestration of carbon dioxide from a carbon dioxide containing gas by carbonation of an alkaline earth metal containing material. The carbon dioxide containing gas is contacted with an aqueous slurry in a carbonation unit for carbonation of at least a portion of the alkaline earth metal to produce a carbon dioxide depleted gas and a carbonate loaded slurry which is substantially exempt of precipitated alkaline earth. metal carbonates. The carbonate loaded slurry is then separated into an aqueous phase and a solid phase; and the aqueous phase is supplied to a precipitation unit for precipitating alkaline earth metal carbonates. The carbonation stage may be performed at a carbonation temperature between about 10° C. and about 40° C. and a carbonation pressure between about 1 bar and about 20 bars. The solid phase may be recycled to the carbonation stage.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: September 13, 2016
    Assignee: INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE (INRS)
    Inventors: Guy Mercier, Jean-Francois Blais, Emmanuelle Cecchi, Sanoopkumar Puthiya Veetil, Louis-Cesar Pasquier, Sandra Kentish
  • Patent number: 9090927
    Abstract: The present invention provides an apparatus and a method for conversion of cellulosic material, such as chopped straw and corn stover, and household waste, to ethanol and other products. The cellulosic material is subjected to continuous hydrothermal pre-treatment without addition of chemicals, and a liquid and a fiber fraction are produced. The fiber fraction is subjected to enzymatic liquefaction and saccharification. The method of the present invention comprises: performing the hydrothermal pre-treatment by subjecting the cellulosic material to at least one soaking operation, and conveying the cellulosic material through at least one pressurized reactor, and subjecting the cellulosic material to at least one pressing operation, creating a fiber fraction and a liquid fraction; selecting the temperature and residence time for the hydrothermal pretreatment, so that the fibrous structure of the feedstock is maintained and at least 80% of the lignin is maintained in the fiber fraction.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: July 28, 2015
    Assignee: Inbicon A/S
    Inventors: Borge Holm Christensen, Lena Holm Gerlach
  • Publication number: 20150125367
    Abstract: Hydrometallurgical systems, methods, and compositions are described in which amine-based lixiviants are utilized in substoichiometric amounts to recover alkaline earths from raw or waste materials. The lixiviant can be regenerated and recycled for use in subsequent iterations of the process or returned to a reactor in a continuous process. Extraction of the alkaline earth from the raw material and precipitation of the extracted alkaline earth is performed in the same reactor and essentially simultaneously.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 7, 2015
    Inventors: Michael D. Wyrsta, Zachary J. A. Komon
  • Patent number: 9026413
    Abstract: A method of modeling phase characteristics of thermodynamic systems utilizing pseudo-properties strategy and a reduced number of variables is disclosed herein. The method describes a means of determining the probability of phase splitting of mixtures of materials at a given temperature, pressure, and composition by characterizing the functions that describe the system via pseudo-properties, and also by describing the system in n?1 or fewer variables, where n represents the number of components in the system of interest. In an embodiment, a multi-component system is characterized in one variable, thereby providing simplified thermodynamic models in a time-efficient manner. In addition, the information generated by this reduced-variable calculation can further be used as a starting point for calculations of equations of state.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: May 5, 2015
    Assignee: Invensys Systems, Inc.
    Inventors: Gang Xu, David Bluck
  • Patent number: 8936771
    Abstract: The invention relates to novel and innovative PCC pigments, able to be used in a paper coating formulations to manufacture coated “multipurpose” papers, in particular for inkjet applications, whose print qualities would be identical or quite similar to high resolution commercial papers, while maintaining a reduced paper manufacturing and production cost. Said pigments are obtained by a carbonation process using a reduced flow rate of CO2/air, which leads to porous agglomerates of PCC of a very specific structure and unique properties, followed by an upconcentration step leading to substantially the same agglomerates but with a higher, appropriate, solids content.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: January 20, 2015
    Assignee: Omya International AG
    Inventors: Michael Kaessberger, Michael Pohl
  • Publication number: 20140341792
    Abstract: The present invention relates to an installation for the purification of minerals, pigments and/or fillers and/or the preparation of precipitated earth alkali carbonate and/or mineralization of water and to the use of such an installation for the purification of minerals, pigments and/or fillers and/or mineralization of water and/or the preparation of precipitated earth alkali carbonate.
    Type: Application
    Filed: January 24, 2013
    Publication date: November 20, 2014
    Inventors: Matthias Buri, Samuel Rentsch, Patrick A.C. Gane, René Vinzenz Blum
  • Patent number: 8883098
    Abstract: Novel and innovative PCC pigments, having a reduced production cost, able to be used in a paper coating formulations to manufacture coated high-quality matt papers, in particular for inkjet applications. Process for the preparation of same, using a reduced flow rate of a carbon dioxide-containing gas in the PCC carbonation step, which produces stable, porous, agglomerates of PCC featuring unique properties and structure, this step being followed by an upconcentration step to increase the solids content.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: November 11, 2014
    Assignee: Omya International AG
    Inventors: Michael Kaessberger, Michael Pohl
  • Publication number: 20140286842
    Abstract: A method of mineralizing calcium from industrial waste comprising extracting calcium ions from a suspension of calcium rich granular particles and aqueous ammonium chloride to form a calcium-rich first fraction and a heavy second fraction. The heavy second fraction is separated from the first fraction and the calcium-rich first fraction is carbonated with a gas comprising carbon dioxide to form a suspension of precipitated calcium carbonate and aqueous ammonium chloride. The precipitate is separated from the aqueous ammonium chloride by centrifugal means and the separated heavy second fraction comprises an enriched weight percent of iron.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Applicant: COREX MATERIALS, INC.
    Inventor: Frank A. KARBARZ
  • Patent number: 8828338
    Abstract: A material with cationic exchanger properties is introduced into aqueous media, where the equilibriums of carbon dioxide dissolution take place. A cationic exchanger material x/nM+nEx? is used to capture hydronium cations (H3O+) according to: x/nM+nEx?(s)+xH3O+(aq)=xH3O+Ex?(s)+x/nM+n(aq) where “x” stands for molar amount of the anionic centers of charge of the cationic exchanger material Ex? balanced by x/n molar amount of metal M, “n” stands for the metal valence, and M is selected from the group consisting of 1A and/or 2A of the periodic table of elements. This capture of the hydronium cations, H3O+, shifts certain reaction equilibriums to the right, according to Le Chatelier's principle, producing more bicarbonate, HCO3?, and/or carbonate, CO3=, than would otherwise be obtained.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: September 9, 2014
    Assignee: Silica de Panama S.A.
    Inventors: Juan Lujano, Javier Revete, Norma Valencia, Luis Rivas, Nelson Socorro
  • Patent number: 8795614
    Abstract: The present invention relates to a method of economical extraction of magnesium, boron and calcium, while minimizing the loss of lithium, from a lithium bearing solution. More specifically, the present invention provides a method for economical extraction of magnesium, boron, and calcium, while minimizing the loss of lithium, from a lithium bearing solution comprising the steps of: (a) adding an alkali in the lithium bearing solution to precipitate magnesium hydroxide; (b) absorbing boron ions on the surface of the magnesium hydroxide by adjusting the pH to about 8.5 to about 10.5; and (c) simultaneously extracting magnesium and boron by filtering the magnesium hydroxide absorbed with the boron ions from the lithium bearing solution.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: August 5, 2014
    Assignee: Research Institute of Industrial Science & Technology
    Inventors: Uong Chon, Gi Chun Han, Ki Hong Kim, Chang Ho Song, Ki Young Kim
  • Patent number: 8795508
    Abstract: The present invention relates to carbon dioxide sequestration, including processes in which group-2 silicates are used to remove carbon dioxide from waste streams to form corresponding group-2 carbonates and silica.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: August 5, 2014
    Assignee: Skyonic Corporation
    Inventor: Joe David Jones
  • Patent number: 8784756
    Abstract: A process for the joint production of sodium carbonate and sodium bicarbonate out of trona, comprising: introducing and dissolving crushed trona ore in a leaching tank containing a solution comprising sodium carbonate and sodium bicarbonate, saturated in sodium bicarbonate, in order to produce solid particles suspended in a production solution comprising sodium carbonate, the solid particles containing insoluble impurities and at least 65% in weight of sodium bicarbonate; separating the solid particles from the production solution containing sodium carbonate; drying and valorizing the separated solid particles; taking at least part of the production solution containing sodium carbonate out of the leaching tank in order to constitute a produced solution which is valorized; and introducing water in the leaching tank.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: July 22, 2014
    Assignee: Solvay SA
    Inventors: Jean-Paul Detournay, Francis M. Coustry, Perrine Davoine
  • Patent number: 8778289
    Abstract: The present invention relates to a method of extracting lithium from a lithium bearing solution. More specifically, the present invention provides a method of economical extraction of lithium from a lithium bearing solution by adding a phosphorous supplying material to the solution to precipitate lithium phosphate from the dissolved lithium.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: July 15, 2014
    Assignee: Research Institute of Industrial Science & Technology
    Inventors: Uong Chon, Oh Joon Kwon, Ki Hong Kim, Chang Ho Song, Gi Chun Han, Ki Young Kim
  • Patent number: 8771621
    Abstract: A method of mineralizing calcium from industrial waste comprising extracting calcium ions from a suspension of calcium rich granular particles and aqueous ammonium nitrate to form a calcium-rich first fraction and a heavy second fraction. The heavy second fraction is separated from the first fraction and the calcium-rich first fraction is carbonated with a gas comprising carbon dioxide to form a suspension of precipitated calcium carbonate and aqueous ammonium nitrate. The precipitate is separated from the aqueous ammonium nitrate by centrifugal means and the separated heavy second fraction comprises an enriched weight percent of iron.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 8, 2014
    Assignee: Corex Materials, Inc.
    Inventor: Frank A. Karbarz
  • Publication number: 20140134084
    Abstract: Hydrometallurgical systems, methods, and compositions are described in which organic amine-based lixiviants are utilized in the selective recovery of alkaline earth elements. The lixiviant can be regenerated and recycled for use in subsequent iterations of the process. Multiple alkaline earth elements can be recovered from a sample in parallel or in serial applications of the disclosed methods.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 15, 2014
    Applicant: Lixivia, Inc.
    Inventors: Zachary J.A. Komon, Michael D. Wyrsta
  • Patent number: 8679428
    Abstract: The present disclosure provides a method of preparing highly pure lithium carbonate from brine. The method includes adding an adsorbent to the brine, from which the magnesium ions Mg2+ have been removed, to adsorb lithium ions Li+ to the adsorbent, followed by providing the adsorbent having the lithium ions Li+ adsorbed thereto to a strong acid solution to desorb the lithium ions Li+ from the adsorbent; enriching the strong acid solution in which the lithium ions Li+ are desorbed from the adsorbent; and obtaining lithium carbonate Li2CO3 through chemical reaction between the lithium ions Li+ in the enriched solution and a carbonate precursor.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: March 25, 2014
    Assignee: Korea Institute of Geosciences and Mineral Resources (KIGAM)
    Inventors: Joon-Soo Kim, Kyeong-Woo Chung, Jin-Young Lee, Sung-Don Kim
  • Publication number: 20140065039
    Abstract: A method of extracting an alkali metal and/or an alkaline earth metal from a mineral including an alkali metal and/or an alkaline earth metal, or a rock containing the mineral, the method including contacting the mineral, with an aqueous composition including formic acid, and to their use in carbon sequestration.
    Type: Application
    Filed: November 25, 2011
    Publication date: March 6, 2014
    Inventors: Bogdan Z. Dlugogorski, Manisha Ghoorah, Eric M. Kennedy
  • Publication number: 20140044619
    Abstract: A continuous countercurrent flow process for converting FGD gypsum to ammonium sulfate and calcium carbonate including countercurrent flows with internal recycle of liquids to maximize the purity of reaction products while minimizing reaction times, and further include embodiments of the process that provide a yield of both ammonium sulfate and calcium carbonate to be 97 to 100%, and embodiments that provide for processes having a total time of reaction being 8 to 12 minutes, the invention further including processes for removing contaminants from the FGD gypsum employing an acid rinse process and/or a slurry tank reactor process.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 13, 2014
    Inventors: Murray P. Hasinoff, Taylor Pursell, Joseph A. Saiia, Arthur R. Shirley, JR., Keith D. Cochran, Timothy G. Holt
  • Publication number: 20140044620
    Abstract: The present invention relates to a method for producing precipitated calcium carbonate using fowl egg shells such as chicken egg shells. More particularly, the method comprises: a heat treatment step of heating fowl egg shells; a grinding step of grinding calcium oxide generated in the heat treatment step; a dry-quenching step of feeding the ground calcium oxide into a thermo-hygrostat to convert the ground calcium oxide into dry calcium hydroxide powder; a carbonizing step of mixing the dry calcium hydroxide powder prepared in the dry-quenching step with an organic solvent and feeding carbon dioxide generated in the heat treatment step into the mixture; and a filtering and drying step of filtering and drying the calcium carbonate obtained in the carbonizing step.
    Type: Application
    Filed: March 16, 2012
    Publication date: February 13, 2014
    Applicant: ESSENTRON. CO., LTD.
    Inventor: Kyoung-Won Park
  • Publication number: 20140010743
    Abstract: A method including electrolysis processing using sulfate-based electrolytes includes precipitating sodium sulfate decahydrate from a salt solution and then redissolving sodium sulfate decahydrate to prepare feed of electrolyte solution for the electrolysis processing. Front-end processing may be used to treat mixed salt solutions, including brine solutions. Calcium sulfate reagent may provide a sulfate source to regenerate electrolyte solution following carbon capture, and with carbon dioxide being sequestered in the form of calcium carbonate.
    Type: Application
    Filed: March 23, 2012
    Publication date: January 9, 2014
    Applicant: NEW SKY ENERGY, INC.
    Inventors: Joseph Victor Kosmoski, Deane C. Little, Nabilah Rontu Carlon
  • Patent number: 8603428
    Abstract: The present invention concerns a method for producing calcium carbonate containing the steps of extraction of alkaline industrial waste or by-products using as a first extraction solvent an aqueous solution of a salt formed from a weak acid and a weak base, whereby a vanadium-enriched first residue is allowed to settle and a calcium-rich first filtrate is formed, filtration, whereby the first filtrate is separated from the first residue, carbonation of the calcium-rich first filtrate using a carbonation gas, whereby calcium carbonate precipitates and a second filtrate is formed, and a second filtration, whereby the calcium carbonate is separated from the second filtrate. Further, the present invention concerns a method for extracting calcium carbonate and vanadium from alkaline industrial waste or by-products.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: December 10, 2013
    Assignees: Aalto University Foundation, Abo Akademi, Rautaruukki Oyj
    Inventors: Sebastian Teir, Sanni Eloneva, Hannu Revitzer, Ron Zevenhoven, Justin Salminen, Carl-Johan Fogelholm, Esko Poylio
  • Patent number: 8551428
    Abstract: The present invention relates to a process for preparing hydromagnesite in an aqueous environment. The invention further relates to such hydromagnesite having a specific platy-like morphology in combination with a specific average particle size and to their use as minerals, fillers and pigments in the paper, paint, rubber and plastics industries and to the use as flame-retardant.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: October 8, 2013
    Assignee: Omya International AG
    Inventors: Michael Pohl, Christian Rainer, Markus Esser
  • Publication number: 20130243674
    Abstract: Methods are provided for producing a composition comprising carbonates, wherein the methods comprise utilizing waste sources of metal oxides. An aqueous solution of divalent cations, some or all of which are derived from a waste source of metal oxides, may be contacted with CO2 and subjected to precipitation conditions to provide compositions comprising carbonates. In some embodiments, a combustion ash is the waste source of metal oxides for the aqueous solution containing divalent cations. In some embodiments, a combustion ash is used to provide a source of proton-removing agents, divalent cations, silica, metal oxides, or other desired constituents or a combination thereof.
    Type: Application
    Filed: May 6, 2013
    Publication date: September 19, 2013
    Applicant: CALERA CORPORATION
    Inventors: Brent Constantz, Paulo J. M. Monteiro, Sidney Omelon, Miguel Fernandez, Kasra Farsad, Katharine Geramita, Karin Yaccato
  • Patent number: 8501125
    Abstract: Systems and methods of capturing and sequestering carbon dioxide, comprising mixing a substantially non-aqueous solvent and an alkali such that the solvent and alkali form a solvent suspension, mixing water and a flue gas containing carbon dioxide with the solvent suspension such that a reaction occurs, the reaction resulting in the formation of a carbonate, water and heat. Methods and processes of environmental remediation and recovering metals from waste streams are also provided.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: August 6, 2013
    Assignee: Expansion Energy, LLC
    Inventor: David Vandor
  • Publication number: 20130164198
    Abstract: A method of mineralizing calcium from industrial waste comprising extracting calcium ions from a suspension of calcium rich granular particles and aqueous ammonium nitrate to form a calcium-rich first fraction and a heavy second fraction. The heavy second fraction is separated from the first fraction and the calcium-rich first fraction is carbonated with a gas comprising carbon dioxide to form a suspension of precipitated calcium carbonate and aqueous ammonium nitrate. The precipitate is separated from the aqueous ammonium nitrate by centrifugal means and the separated heavy second fraction comprises an enriched weight percent of iron.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 27, 2013
    Applicant: Corex Materials, Inc.
    Inventor: Corex Materials, Inc.
  • Publication number: 20130078168
    Abstract: Disclosed is a method for solidifying carbon dioxide into carbonate, in which carbon dioxide is stably converted into and solidified into carbonate (mineral facies) by using steel slag or natural mineral by extracting an alkali component by supplying an ammonium salt solvent as an extraction solvent to raw slag and injecting carbon dioxide into an extract solution supplied to a carbonation reactor to produce carbonate precipitate from the extract solution through the induction of a conversion reaction of the carbon dioxide into the carbonate precipitate. Then after the above two step are performed at least one an acetic acid solvent is supplied as an extraction solvent to the raw slag so as to finally extract an alkali component; and carbon dioxide is injected into an extract solution to produce carbonate precipitate from the extract solution through the induction of a conversion reaction of the carbon dioxide into the carbonate precipitate.
    Type: Application
    Filed: November 22, 2011
    Publication date: March 28, 2013
    Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANY
    Inventors: Tae Young Kim, Sung Yeup Chung, Ki Chun Lee
  • Publication number: 20130036945
    Abstract: CO2-sequestering formed building materials are provided. The building materials of the invention include a composition comprising a carbonate/bicarbonate component. Additional aspects of the invention include methods of making and using the CO2-sequestering formed building material.
    Type: Application
    Filed: October 11, 2012
    Publication date: February 14, 2013
    Applicant: CALERA CORPORATION
    Inventor: CALERA CORPORATION
  • Publication number: 20120189515
    Abstract: A method of producing calcium carbonate from lime comprises the steps of: (i) providing an aqueous solution comprising 10% to 35% by weight of dissolved polyhydroxy compound and 1% to 5% by weight of dissolved calcium hydroxide (expressed as Ca(OH)2) and having a pH of at least 11.5; (ii) treating the solution prepared in step (i) to remove solids including suspended solids; (iii) dispersing carbon dioxide through the solution so as to form calcium carbonate with a consequential reduction in the pH of the reaction mixture, (iv) during a time period beginning at the start of a sudden, short rise in pH and ended during a subsequent fall in pH but before it reaches 9.5 terminating the dispersion of carbon dioxide and adding an alkaline reagent to maintain a pH for the product mixture of at least 9.5, and (v) recovering precipitated calcium carbonate.
    Type: Application
    Filed: April 2, 2012
    Publication date: July 26, 2012
    Applicant: CalciTech Synthetic Minerals Ltd.
    Inventors: Christoph Jensen, Ilka Markwardt
  • Publication number: 20120134902
    Abstract: A method and system of fixing carbon dioxide is provided. After metal ion components are extracted from, e.g., natural mineral or steel slag through acid treatment, carbon dioxide is injected to fix carbon dioxide by carbonating the same. Since the procedure of pH adjustment is unnecessary, the reaction is carried out effectively and a continuous process is enabled. Accordingly, the disclosed method of fixing carbon dioxide enables effective removal of carbon dioxide produced from the steelmaking industry, thereby significantly reducing greenhouse gas emission and allowing recycling of the discarded steel slag.
    Type: Application
    Filed: April 6, 2011
    Publication date: May 31, 2012
    Applicants: HYUNDAI MOTOR COMPANY, HYUNDAI STEEL COMPANY, KIA MOTORS CORPORATION
    Inventors: Sung Yeup Chung, Ki Chun Lee, Min Ho Cho, Seok Gyu Sonh, Dong Cheol Park
  • Patent number: 8182757
    Abstract: A method and apparatus for producing a calcium carbonate product formed of small <100 ?m sized separate calcium carbonate particles. Calcium hydroxide is fed through a disintegration and spraying apparatus (14), operating on the principle of a pin mill, into a gas which contains carbon dioxide for precipitating calcium carbonate particles and which is inside a precipitation reactor (10). The temperature in the precipitation reactor is maintained at <65° C.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: May 22, 2012
    Assignee: FP-Pigments Oy
    Inventors: Mikko Maijala, Roope Maijala, Bjorn Lax, Jarmo Tolonen, Teuvo Tjurin
  • Patent number: 8128897
    Abstract: A continuous process for purification of brine contaminated with alkaline earth metals. The process comprises combining the brine with an aqueous solution containing at least one of an alkali metal hydroxide and an alkali metal carbonate with efficient mixing by a micro-mixing device.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: March 6, 2012
    Assignee: Morton Salt, Inc.
    Inventors: Roma Gimelfarb, Kurt John Waatti, Francis Joseph Lipiecki, Stephen Gerard Maroldo, Kenneth Eugene Sloffer
  • Patent number: 8012445
    Abstract: A method and apparatus for producing a calcium carbonate product formed of small <100 ?m sized separate calcium carbonate particles. Calcium hydroxide is fed through a disintegration and spraying apparatus (14), operating on the principle of a pin mill, into a gas which contains carbon dioxide for precipitating calcium carbonate particles and which is inside a precipitation reactor (10). The temperature in the precipitation reactor is maintained at <65° C.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: September 6, 2011
    Assignee: FP-Pigments Oy
    Inventors: Mikko Maijala, Roope Maijala, Bj{hacek over (o)}rn Lax, Jarmo Tolonen, Jeuvo Tjurin
  • Publication number: 20110139628
    Abstract: The present invention concerns a method for producing calcium carbonate containing the steps of extraction of alkaline industrial waste or by-products using as a first extraction solvent an aqueous solution of a salt formed from a weak acid and a weak base, whereby a vanadium-enriched first residue is allowed to settle and a calcium-rich first filtrate is formed, filtration, whereby the first filtrate is separated from the first residue, carbonation of the calcium-rich first filtrate using a carbonation gas, whereby calcium carbonate precipitates and a second filtrate is formed, and a second filtration, whereby the calcium carbonate is separated from the second filtrate. Further, the present invention concerns a method for extracting calcium carbonate and vanadium from alkaline industrial waste or by-products.
    Type: Application
    Filed: May 29, 2009
    Publication date: June 16, 2011
    Applicant: Aalto University Foundation
    Inventors: Sebastian Teir, Sanni Eloneva, Hannu Revitzer, Ron Zevenhoven, Justin Salminen, Carl-Johan Fogelholm, Esko Poylio
  • Patent number: 7931809
    Abstract: Desalination methods that include carbonate compound precipitation are provided. In certain embodiments, feed water is subjected to carbonate compound precipitation conditions prior to desalination. In certain embodiments, desalination waste brine is subjected to carbonate compound precipitation conditions. In yet other embodiments, both feed water and waste brine are subjected to carbonate compound precipitation conditions. Aspects of embodiments of the invention include carbone dioxide sequestration. Embodiments of the invention further employ a precipitate product of the carbonate compound precipitation conditions as a building material, e.g., a cement. Also provided are systems configured for use in methods of the invention.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: April 26, 2011
    Assignee: Calera Corporation
    Inventors: Brent R. Constantz, Kasra Farsad, Miguel Fernandez
  • Patent number: 7906028
    Abstract: Hydraulic cement compositions that include a carbonate compound composition, e.g., a salt-water derived carbonate compound composition containing crystalline and/or amorphous carbonate compounds, are provided. Also provided are methods of making and using the hydraulic cements, as well as settable compositions, such as concretes and mortars, prepared therefrom. The cements and compositions produced therefrom find use in a variety of applications, including use in a variety of building materials and building applications.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: March 15, 2011
    Assignee: Calera Corporation
    Inventors: Brent R Constantz, Cecily Ryan, Laurence Clodic
  • Publication number: 20110033350
    Abstract: The present disclosure provides a process for recovering from high salinity liquid a substance comprising a selected alkaline earth carbonate salt, the process comprises (i) adding to said high salinity liquid a reagent comprising a solution of an alkali metal carbonate in an amount sufficient to allow precipitation of said substance in said liquid, while continuously introducing into the liquid a gas whereby a high degree of precipitate is formed in the liquid; and (ii) isolating said precipitate from the liquid, wherein said precipitate comprising the alkaline earth carbonate comprising substance in an essentially purified form (at least 95% w/w degree of purity). Also provided are a unit and a system constructed and operative for performing the process, preferably continuously.
    Type: Application
    Filed: August 10, 2008
    Publication date: February 10, 2011
    Applicant: ECOCHEM TECH, LTD.
    Inventor: Solomon Flaks
  • Patent number: 7829053
    Abstract: Non-cementitious CO2 sequestering compositions are provided. The compositions of the invention include a CO2 sequestering additive, e.g., a CO2 sequestering carbonate composition. Additional aspects of the invention include methods of making and using the non-cementitious CO2 sequestering compositions.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: November 9, 2010
    Assignee: Calera Corporation
    Inventors: Brent Constantz, Andrew Youngs, Joshua Patterson
  • Patent number: 7754169
    Abstract: Methods are provided for producing a composition comprising carbonates, wherein the methods comprise utilizing waste sources of metal oxides. An aqueous solution of divalent cations, some or all of which are derived from a waste source of metal oxides, may be contacted with CO2 and subjected to precipitation conditions to provide compositions comprising carbonates. In some embodiments, a combustion ash is the waste source of metal oxides for the aqueous solution containing divalent cations. In some embodiments, a combustion ash is used to provide a source of proton-removing agents, divalent cations, silica, metal oxides, or other desired constituents or a combination thereof.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: July 13, 2010
    Assignee: Calera Corporation
    Inventors: Brent Constantz, Paulo J. M. Monteiro, Sidney Omelon, Miguel Fernandez, Kasra Farsad, Katharine Geramita, Karin Yaccato
  • Patent number: 7749476
    Abstract: Provided are methods for producing carbonate-containing compositions comprising silicon-based material (e.g., pozzolanic material) from a source of carbon dioxide, a divalent cation-containing solution, and a source of proton-removing agents. In such methods, divalent cations of the divalent cation-containing solution are provided by digestion of material comprising metal silicates. Also provided are methods for producing carbonate-containing compositions comprising little or no silicon-based material. In such methods, silicon-based material (e.g., silica, unreacted or undigested silicates, aluminosilicates, etc.) may be separated and processed separately from carbonate-containing compositions. Silicon-based material and carbonate-containing material may be blended at a later stage to produce a pozzolanic material, which may be further processed and blended with, for example, Portland cement.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: July 6, 2010
    Assignee: Calera Corporation
    Inventors: Brent R. Constantz, Laurence Clodic, Cecily Ryan, Miguel Fernandez, Kasra Farsad, Sidney Omelon, Philip Tuet, Paulo Monteiro, Gordon E. Brown, Jr., Katharine Geramita
  • Patent number: 7749483
    Abstract: Disclosed is a processes for the production of relatively high purity alkaline earth metal oxides, such as SrO, from relatively low purity forms of carbonated or other oxygenated forms of such metals, such as strontium carbonate. The relatively low purity material is exposed to conditions under which at least a portion of the metal contained therein is converted to a salt that is more readily solvated in a provided solvent than the starting material, while at the same time not substantially increasing the solubility of at least one or more of the impurities in such selected solvent. This step is then preferably followed by removal of solid or otherwise un-dissolved impurities from the solution. After the removal step, the solution is preferably exposed to conditions effective to form a relatively insoluble salt of the alkaline earth metal, such as a strontium salt. The insoluble salt is also preferably one that can be readily and effectively converted to the desired alkaline earth metal oxide, preferably SrO.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: July 6, 2010
    Assignee: Honeywell International Inc.
    Inventors: Thomas Scholten, Michael Fooken, Jessica Mauer, Andreas Kanschik-Conradsen, Michael Hau
  • Patent number: 7744761
    Abstract: Desalination methods that include carbonate compound precipitation are provided. In certain embodiments, feed water is subjected to carbonate compound precipitation conditions prior to desalination. In certain embodiments, desalination waste brine is subjected to carbonate compound precipitation conditions. In yet other embodiments, both feed water and waste brine are subjected to carbonate compound precipitation conditions. Aspects of embodiments of the invention include carbon dioxide sequestration. Embodiments of the invention further employ a precipitate product of the carbonate compound precipitation conditions as a building material, e.g., a cement. Also provided are systems configured for use in methods of the invention.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: June 29, 2010
    Assignee: Calera Corporation
    Inventors: Brent R. Constantz, Kasra Farsad, Miguel Fernandez
  • Patent number: 7735274
    Abstract: Hydraulic cement compositions that include a carbonate compound composition, e.g., a salt-water derived carbonate compound composition containing crystalline and/or amorphous carbonate compounds, are provided. Also provided are methods of making and using the hydraulic cements, as well as settable compositions, such as concretes and mortars, prepared therefrom. The cements and compositions produced therefrom find use in a variety of applications, including use in a variety of building materials and building applications.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: June 15, 2010
    Assignee: Calera Corporation
    Inventors: Brent R. Constantz, Cecily Ryan, Laurence Clodic
  • Patent number: 7731921
    Abstract: A process for sequestration of carbon dioxide comprising the following steps: (a) dispersing solid waste material comprising calcium oxide and a calcium-comprising mixed oxide in water to dissolve at least part of the calcium oxide and to form calcium oxide-depleted solid waste material in a calcium hydroxide solution; (b) separating the calcium hydroxide solution from the calcium oxide-depleted solid waste material; (c) converting the calcium hydroxide in the separated calcium hydroxide solution in precipitated calcium carbonate; and (d) contacting an aqueous slurry of the calcium oxide-depleted solid waste material with carbon dioxide for mineral carbonation of the carbon dioxide to form carbonated solid waste material.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: June 8, 2010
    Assignee: Shell Oil Company
    Inventors: Jacobus Johannes Cornelis Geerlings, Gerardus Antonius Franciscus Van Mossel, Bernardus Cornelis Maria In' T Veen
  • Patent number: 7722842
    Abstract: A method for mineral sequestration of pollutant gases resulting from the combustion of carbon-based fuels such as carbon and sulfur dioxides is provided and includes, providing a particulate magnesium-containing mineral and exposing the magnesium-containing mineral to a weak acid to dissolve magnesium from the mineral and form a magnesium-containing solution. The surface of the particulate magnesium-containing mineral is physically activated to expose and dissolve additional magnesium into the solution. Pollutant gases such as carbon dioxide are mixed with the magnesium-containing solution. When the pH of the magnesium-containing solution is increased, solid magnesium carbonate is formed.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: May 25, 2010
    Assignee: The Ohio State University
    Inventors: Ah-Hyung Park, Liang-Shih Fan