Abstract: Embodiments of the present application provide a preparation method of a silver nanowire with a circular cross section, which relates to the field of nanometre material technologies. In the embodiments of the present application, by heating a mixed solution of the silver nanowire with the pentagonal cross section, the reducing sugar, the oxygen reducing agent and the water, an unstable silver nanowire with the pentagonal cross section are transformed into a stable silver nanowire with the circular cross section, and then the risk that a transparent conductive films based on the silver nanowires lose conductivity is avoided. In addition, in terms of an optical performance testing, compared to conductive films based on the silver nanowires with the pentagonal cross section, conductive films based on the silver nanowires with the circular cross section have significantly reduced a haze.

Abstract: A concentrate burner provided over a reaction shaft of a copper smelting furnace, is characterized by comprising: a raw material supply portion that supplies a starting material into the reaction shaft, the starting material including copper concentrate; and an additive supply portion that is provided separately from the raw material supply portion and supplies solid additive to the starting material.

Abstract: The present disclosure relates to a method for synthesizing Pd nanocubes having an average size less than 10 nm. The reaction temperature, reaction time, and molar ratios of TOP/Pd-OLA can be used to control size and formation of the Pd nanocubes. The present disclosure is also directed to Pd nanocubes, less than 10 nm, having face centered cubic structures. Pd nanocubes of the present disclosure are an effective catalyst for CO2 reduction reaction with excellent selectivity for CO. Small sized Pd nanocubes can be used not only as the seeds to prepare other metal nanocubes, but can also as powerful catalysts for a wide variety of reactions in different industrial processes.

Abstract: A method of forming monodispersed metal nanowires comprising: forming a reaction mixture including a metal salt, a capping agent and an ionic additive in a reducing solvent; and reducing the metal salt to the monodispersed metal nanostructures.

Abstract: Gold nanorattle probes are provided that are highly tunable, physiologically stable, and ultra-bright Raman probes for in vitro and in vivo surface-enhanced Raman scattering (SERS) applications. The nanorattles contain an essentially uniform gap between core and shell that is tunable and can range from 2 nm to 10 nm in width. This provides numerous advantages including allowing for increased loading with a variety of dye molecules that exhibit SERS in various spectral regions, including the “tissue optical window” for in vivo studies. In addition, the nanorattle probes provide an internal label when used in diagnostic methods to detect nucleic acids, proteins and other biotargets. The nanorattles have an essentially spherical gold metal nanoparticle core, a porous material of silver metal of an essentially uniform width surrounding the nanoparticle core that is loaded with one or more SERS reporter molecules, and an outer gold metal shell encapsulating the porous material.

Abstract: Methods of synthesizing various metal nanoparticle structures having high uniformity, using iterative reduction and oxidation conditions, is provided herein.

Abstract: The invention is related to a storage vessel (1) comprising a shaped body (3) of a porous solid, wherein the storage vessel (1) comprises a wall (5) with a section (7) comprising at least one inlet (9), wherein the storage vessel (1) has a central axis (11) and the central axis (11) is a longitudinal axis of the storage vessel (1) and/or perpendicular to a cross-sectional area of the at least one inlet (9), wherein the shaped body (3) covers at least 85% of an inner volume (13) of the storage vessel (1) and the shaped body (3) comprises an opening (19) in an axial direction (17), axial referring to the central axis (11) of the storage vessel (1), wherein the opening (19) extends from a first end (21) of the shaped body (3) to an opposing second end (23) of the shaped body (3) and wherein the storage vessel (1) comprises exactly one shaped body (3), which is formed in one piece. The invention is further related to a shaped body and use of the shaped body.

Abstract: A process for manufacturing high aspect ration silver nanowires is provided, wherein the total glycol concentration is <0.001 wt % at all times during the process.

Abstract: Disclosed herein are optical stacks that are stable to light exposure by incorporating one or more UV-blocking layers.

Abstract: A method of recovering Fe from steel-making slag is disclosed. The method includes the steps of melting steel-making slag having a higher Fe content than iron-making slag by heating the steel-making slag to a first temperature; cooling the molten slag to a second temperature that is lower than the first temperature and then maintaining the same at the second temperature for a predetermined time to thus precipitate Fe in the molten slag, thereby forming and growing an Fe-rich phase; rapidly cooling the slag to room temperature; and crushing the solidified slag and magnetically separating a magnetically-susceptible portion from a magnetically-unsusceptible portion.

Abstract: A method of forming monodispersed metal nanowires comprising: forming a reaction mixture including a metal salt, a capping agent and an ionic additive in a polar solvent at a first temperature; and forming metal nanowires by reducing the metal salt in the reaction mixture.

Abstract: The present invention effectively recover high-grade scandium from nickel oxide ores. The present invention includes a leaching step (S1) for charging nickel oxide ores and sulfuric acid into a pressurized vessel, a neutralizing step (S2) for adding a neutralizing agent to the leachate to obtain a neutralized precipitate and a neutralized liquid, a sulfidizing step (S3) for adding a sulfidizing agent to the neutralized liquid, an ion exchange step (S4) for bringing the sulfidized solution into contact with a chelate resin, a solvent extraction step (S6) for bringing a Sc eluent into contact with an extracting agent, a Sc precipitation Step (S7) for adding a neutralizing agent or oxalic acid to a stripping solution, and a calcination step (S8) for drying and calcining a precipitate to obtain scandium oxide.

Abstract: A method during the oxidation and sintering of pellets includes the introduction of a first medium into the compartment through an inlet connected to the compartment and the heating of the first medium in the inlet through the use of a combustion arrangement. The use of the combustion arrangement includes the ignition of the fuel, combustion of the fuel, and the transfer of the combustion heat to the first medium that is present at the combustion arrangement. A second medium is introduced to the inlet through an intake in the direct vicinity of the combustion arrangement, where the ignition of the fuel and the combustion of the fuel take place for the transfer of combustion heat also to the second medium. The heated first medium and the heated second medium are mixed before or during their introduction into the compartment.

Abstract: Methods of preparing nanowires having small diameters and large lengths are disclosed. Such nanowires are useful in electronics applications.

Abstract: A method for the oxidation and sintering of pellets includes the introduction of a first medium into a compartment through an inlet connected to the compartment and the heating of the medium in the inlet through the use of a combustion arrangement. The use of the combustion arrangement includes the ignition of the fuel, the combustion of the fuel, and the transfer of combustion heat to the first medium that is present at the combustion arrangement. In a region in the inlet outside the direct passage of the first medium, the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat to the first medium take place. By the introduction of a second medium into the region in the direct vicinity of the combustion arrangement, the combustion of the fuel and the transfer of combustion heat also to the second medium take place.

Abstract: This invention relates to a process for preparing a ferric nitrate (Fe(NO3)3) reagent, capable of serving as a solvent and copper species oxidizing agent in the ore curing, heap leaching, and/or run of mine (ROM) leaching of a copper ore hydrometallurgical process located at a brown field or green field, from an aqueous copper raffinate solution from the copper ore hydrometallurgical process of copper ore containing iron (II) (Fe2+), and the reagent prepared pursuant to this process.

Abstract: The invention relates to a method of controlling the thermal balance of the reaction shaft of a suspension smelting furnace and to a concentrate burner for feeding reaction gas and pulverous solid mater into the reaction shaft of the suspension smelting furnace. In the method, endothermic material (16) is fed by the concentrate burner (4) to constitute part of the mixture formed from the powdery solid matter (6) and reaction gas (5), so that a mixture containing the powdery solid matter (6), reaction gas (5) and endothermic material (6) is formed in the reaction shaft (2). The concentrate burner (4) comprises cooling agent feeding equipment (15) for adding the endothermic material (16) to constitute part of the mixture, which is formed from the pulverous solid matter (6) that discharges from the orifice (8) of the feeder pipe and the reaction gas (5) that discharges through the annular discharge orifice (14).

Abstract: Embodiments of the present invention provide systems and methods for efficiently producing both a low-pressure ozone stream and high-pressure oxygen stream using a single air separation unit. The low-pressure ozone stream and high-pressure oxygen stream can be produced with significant energy savings and can be used in variety of applications, including the extraction of precious metals from ore with aqueous oxidation reactors and high-pressure oxidation reactors.

Abstract: A particulate composite lubricant for powder metallurgy comprises: first discrete particles comprising at least about 90 wt % of a fatty primary monoamide wax, being substantially free of fatty bisamide wax, and being at least partially coated with metal oxide nanoparticles and second metal-stearate free discrete particles comprising a fatty bisamide wax. A particulate composite lubricant for powder metallurgy can comprise: a Montan acid ester wax and at least one fatty amide wax comprising at least one of a fatty monoamide wax and a fatty bisamide wax.

Abstract: A method of treating an offgas includes purifying the offgas to remove particulate matter, water, undesirable gaseous components and inert gases to produce a dried carbon oxide gas feedstock, and converting at least a portion of carbon oxides in the dried carbon oxide gas feedstock into solid carbon. In other embodiments, a method includes passing a dried carbon oxide gas feedstock through a multi-stage catalytic converter. A first stage is configured to catalyze methane-reforming reactions to convert methane into carbon dioxide, carbon monoxide and hydrogen with residual methane. A second stage is configured to catalyze the Bosch reaction and convert carbon oxides and hydrogen to solid carbon and water.

Abstract: An agent for desulfurizing and/or for pre-desulfurizing, in particular for desulfurizing and/or pre-desulfurizing molten pig iron or molten steel, contains calcium oxide and bitumen.

Abstract: A method of fabricating a material having a high concentration of a carbide constituent. The method may comprise adding a carbide source to a biocompatible material in which a weight of the carbide source is at least approximately 10% of the total weight, heating the carbide source and the biocompatible material to a predetermined temperature to melt the biocompatible material and allow the carbide source to go into solution to form a molten homogeneous solution, and impinging the molten homogeneous solution with a high pressure fluid to form spray atomized powder having carbide particles. The size of a particle of carbide in the atomized powder may be approximately 900 nanometers or less. The biocompatible material may be cobalt chrome, the carbide source may be graphite, and the fluid may be a gas or a liquid.

Abstract: A system for ashing carbon includes a vertically oriented burner column having a first end and an opposing end with an interior chamber therebetween. The burner column has an aperture at the first end and a suction port proximal to the second end, the aperture and the suction port in communication with the interior chamber. The system also comprises a porous media screen located in the interior chamber and positioned between the first end and the second end of the burner column. The media screen is adapted to hold ignited carbon containing a precious metal therein. The system also contains a pump that is coupled to the suction port. The pump is configured to apply a negative pressure to the interior chamber of the burner column to draw air into the interior chamber via the aperture. The drawn air passes through the ignited carbon at a desired flow rate to achieve a temperature of the carbon suitable for ashing the carbon.

Abstract: The present invention relates to a method for manufacturing copper nanoparticles, in particular, to a method for manufacturing copper nanoparticles, wherein the method includes preparing a mixture solution including a copper salt, a dispersing agent, a reducing agent and an organic solvent; raising temperature of the mixture solution up to 30-50° C. and agitating; irradiating the mixture solution with microwaves; and obtaining the copper nanoparticles by lowering temperature of the mixture solution. According to the present invention, several tens of nm of copper nanoparticles having a narrow particle size distribution and good dispersibility can be synthesized in mass production.

Abstract: An aspect provides a method of treating direct reduced iron (DRI) pellets, by applying a foam to the DRI pellets. The foam may include a foam having an expansion ratio of about 20-40 and a bubble size of about 200 microns or less. The foam may include one or more additives, such as anti-corrosion agent(s), oxidizing agents, and dust reducing binder(s). The foam(s) may be applied in a single stage or in multiple stages and may be applied to hot or cold DRI pellets. Other aspects are described and claimed.

Abstract: The present invention provides a process for the preparation of pre-melted calcium aluminate for iron and steel treatment and protection by the fusion of aluminum dross residues, usually referred to as non-metallic products (NMP) containing variable levels of aluminum (Al) and aluminum nitride (AlN) with calcium carbonate at high temperature, under oxidizing atmosphere. It further relates to the purification of the molten calcium aluminate from some contaminants present in the dross residue.

Abstract: A method and a system for treating waste gases (4) from plants (32, 33) for pig iron production, wherein a first sub-stream (51) of the waste gas is subjected to an at least partial conversion of CO into CO2 after the addition of water and/or water vapor (10) and the waste gas (4) is then subjected to CO2 capture. To be able to set a variable H2/CO ratio in the waste gas, a further sub-stream (52) of the waste gas is not subjected to a conversion of CO into CO2, but is subjected to CO2 capture separately from the first sub-stream (51).

Abstract: Chemical processes and reactors for efficiently producing hydrogen fuels and structural materials and associated systems and methods. A representative process includes dissociating a hydrogen donor into dissociation products by adding energy to the hydrogen donor, wherein the energy includes waste heat generated by a process other than dissociating the hydrogen donor. The process can further include providing, from the dissociation products, a structural building block and/or a hydrogen-based fuel, with the structural building block based on carbon, nitrogen, boron, silicon, sulfur, and/or a transition metal.

Abstract: Collector compositions and methods for making and using same are provided. The collector can include one or more etheramines and one or more amidoamines. A liquid suspension or slurry comprising one or more particulates can be contacted with the collector to produce a treated mixture. A product can be recovered from the treated mixture that includes a purified liquid having a reduced concentration of the particulates relative to the treated mixture, a purified particulate product having a reduced concentration of liquid relative to the treated mixture, or both.

Abstract: A molten metal refining wire is disclosed which comprises a metal sheath encapsulating a core of refining material, wherein the core is sealed within the sheath in a fluid-tight manner and wherein the thickness of the sheath is greater than about 0.6 mm. The core refining material apparent density ratio is at least about 95% of the theoretical solid core equivalent. The core refining material comprises calcium metal and silicon metal. A method of manufacturing a molten refining wire is also disclosed.

Abstract: A method for the production of iron from an iron oxide-containing material includes contacting an iron oxide-containing material with a particle size distribution range with a ?90 of less than 2 mm, with a carbon-containing material with a particle size distribution range with a ?90 of less than 6 mm, in a commercial scale reactor at a temperature of between 900° C. and 1200° C. for a contact time sufficient to reduce the iron oxide to iron.

Abstract: Process for the purification of a residue containing solids and mother liquor and having a chloride ion content greater than 5000 ppm by weight relative to the weight of the residue which comprises (a) piston washing said residue with a washing fluid and (b) recovering a purified residue.

Abstract: A composite product and a method of manufacturing the composite product are disclosed. The composite product includes (a) a polymeric material binder and a metal-bearing material or (b) the polymeric material binder and a carbon-bearing material. The 5 method includes heating and mixing the components of the composite product and thereafter forming the heated mixture into a final product shape, with the heating step being sufficient to melt at least a part of the polymeric material binder to facilitate forming the product.

Abstract: This invention concerns a method for the oxidation and sintering of pellets 1 arranged in a compartment 2 in which the oxidation and sintering take place with the aid of a medium with a defined temperature, which medium heats the pellets 1. The method comprises the introduction of a first medium 3 into the compartment through an inlet 4 connected to the compartment 2 and the heating of the medium in the inlet through the use of a combustion arrangement 5, or a part of a combustion arrangement, arranged in the inlet 4 and comprising fuel where the use of the combustion arrangement 5 comprises the ignition of the fuel, the combustion of the fuel whereby combustion heat is developed, and the transfer of combustion heat to the first medium 3 that is present at the combustion arrangement 5.

Abstract: This invention concerns a method for the heating of a medium in a compartment 1 in which pellets 2 are arranged to be oxidised and sintered with the aid of the hot medium. The method comprises the introduction of a first medium 3 into the compartment 1 through an inlet 4 and the heating of the first medium 3 when it is present in the inlet 4. The heating takes place through the use of a combustion arrangement 5, or a part of such an arrangement, that is arranged in the inlet 4 and that comprises fuel. The heating, the use of the combustion arrangement 5, comprises in turn the ignition of the fuel, combustion of the fuel whereby combustion heat is developed, and the transfer of the combustion heat to the first medium 3 that is present at the combustion arrangement 5 in the inlet 4.

Abstract: This invention concerns a method during the oxidation and sintering of pellets (1) arranged in a compartment (2) in which the sintering takes place with the aid of a medium with a high temperature, which medium heats the pellets (1). The method comprises the introduction of a first medium (3) into the compartment (2) through an inlet (4) connected to the compartment (2) and the heating of the first medium (3) in the inlet (4) through the use of a combustion arrangement (5), or a part of a combustion arrangement, arranged in the inlet (4) and comprising fuel. The use of the combustion arrangement (5) comprises the ignition of the fuel, combustion of the fuel whereby combustion heat is developed, and the transfer of the combustion heat to the first medium (3) that is present at the combustion arrangement (5).

Abstract: A steel production method in the steel and iron industry involves dividing a vertically falling solid slag stream which flows from a steelmaking furnace into individual streams, forcedly cooling the individual streams, dividing the individual streams into parts by cutting across the movement thereof, forcedly cooling the parts and transferring them to a belt conveyor on which the separate parts are forcedly cooled and transported away from the vessel. A shaped conveyor belt, on which the slag parts are crushed by means of a cylindrical roll, is used for additional crushing.

Abstract: The present document describes a method and confinement unit for stopping a chemical reaction involving hot metal dross and a gas in the surrounding environment. The method comprises transferring the hot metal dross in a dross pan and placing the dross pan with the metal dross therein in the gastight chamber. Then, the dross pan is sealed with the hot metal dross therein into a gastight chamber of a fixed interior volume. The chemical reaction occurring inside the gastight chamber depletes a limited amount of gas present inside the gastight chamber, thereby stopping once the gas is completely depleted. The gastight chamber is shaped and sealed to withstand a pressure differential created by the depleting of the gas in the fixed interior volume, until the hot dross is cooled and the chemical reaction has stopped.

Abstract: Provided is a method for producing ferronickel from a nickel sulfide or a mixed sulfide containing nickel and cobalt, obtained by hydrometallurgy of nickel oxide ore or obtained from scraps or products in process. The method for producing a ferronickel raw material is to form the ferronickel raw material from a nickel sulfide or a mixed sulfide containing nickel sulfide and cobalt sulfide, wherein treatments are performed through the following steps: (1) redissolution step, (2) deferrization step, (3) solvent extraction step, (4) hydroxylation step, (5) roasting step, and (6) washing and calcining step.

Abstract: The present invention provides solution to the problem involved in preparation of metal nanosponges using templates and polymers. The instant invention is successful in providing a simple, template free single step process for the preparation of metal nanosponges having porous low density and high surface area. These metal nanosponges were found to be good self-supported substrates for surface-enhanced Raman spectroscopy (SERS) and have shown significant anti-bacterial activity.

Abstract: The method and the device serve to treat the flue dust formed during the production of nonferrous metals. After the addition of sulfur and/or a sulfur compound, the flue dust is heated, and volatile compounds are separated in a downstream offgas treatment unit. The flue dust is heated in an inert atmosphere.

Abstract: Disclosed is a carbon-material-containing iron oxide briquette composition that, when obtaining direct reduced iron by heating in a moving hearth reduction furnace, does not turn into powder in the furnace leading to an accumulation of powder, and reliably prevents the obtained direct reduced iron from turning into powder during conveyance, decreasing yield. Further disclosed are a method for producing same, and a method for producing direct reduced iron using same. The carbon-material-containing iron oxide briquette composition is characterized by: the solidus temperature that is of an Al2O3-CaO—SiO2 ternary system slag in said briquette composition and that is determined by the amount of contained Al2O3, CaO, and SiO2 being no greater than 1300 DEG C.

Abstract: The invention is directed to a method for inducing a surface stress-induced volumetric change in a nanoporous material and to a device for carrying out the method. The method of the invention comprises—accumulating polar molecules onto the surface of the nanoporous material by physical adsorption of the polar molecules from the vapour phase thereby inducing surface stress to said surface; or—dissipating accumulated polar molecules from the surface of the nanoporous material by physical desorption of the polar molecules into the vapour phase thereby inducing surface stress to said surface, wherein the nanoporous material comprises a nanoporous metal or alloy. The device comprises a) a nanoporous metal material which, upon physical adsorption from the vapour phase or physical desorption into the vapour phase of polar molecules onto or from the surface of the nanoporous metal material, exhibits a volumetric change; and b) a mechanism for detecting and/or transferring the volumetric change.

Abstract: Provided is a method for producing a porous material, wherein porosity can be controlled to 50% or higher by means of a freezing method, pore size can be controlled to 10 ?m to 300 ?m, and pore diameter distribution is uniform. The method is a method for producing a porous material, comprising freezing a mixture of water and a raw material comprising at least any of a ceramic material, a resin, a metal, and precursors thereof from a specific portion of the mixture to use ice crystals produced at the time as a pore source and then heat-treating a dry material obtained by removing the ice from the frozen material, wherein the mixture of a raw material and water or the frozen material comprises an antifreeze protein.

Abstract: A revert alloy is used in the manufacture of a target alloy having a different composition. The weight percent of the elemental constituents of this first alloy and a second or target alloy are obtained, and the ratio of the percentage by weight of each elemental constituent in the first alloy to the second alloy is determined. The lowest ratio is used to determine the amount of the first alloy that is melted and the necessary elemental constituents that are added to the melt to produce the desired composition of the target alloy. The melt is solidified to produce the target alloy.

Abstract: In one aspect, there are provided methods for producing porous metallic structures, wherein the methods involve the use of collagen fibrils on the nanometer scale as a “sacrificial” scaffold upon which metal particles are deposited. Also disclosed are structures comprising a porous metallic matrix having favorable strength, porosity, and density characteristics. Structures produced in accordance with the present disclosure are useful for, inter alia, the fabrication of devices such as filters, heat exchangers, sound absorbers, electrochemical cathodes, fuel cells, catalyst supports, fluid treatment units, lightweight structures and biomaterials.

Abstract: Chemical processes and reactors for efficiently producing hydrogen fuels and structural materials and associated systems and methods. A representative process includes dissociating a hydrogen donor into dissociation products by adding energy to the hydrogen donor, wherein the energy includes waste heat generated by a process other than dissociating the hydrogen donor. The process can further include providing, from the dissociation products, a structural building block and/or a hydrogen-based fuel, with the structural building block based on carbon, nitrogen, boron, silicon, sulfur, and/or a transition metal.

Abstract: A process for the inhibition of particulate emission during friction of heat-treated iron ore pellets includes the following steps: a) removal of heat-treated iron ore pellets at a temperature of 200° C.; and b) spraying of an alcohol by-product on pellets. The use of an alcohol by-product as an inhibitor of particulate emission is further described, with the alcohol by-product being sprayed on heat-treated iron ore pellets, which can partially or completely replace water during the handling, stacking, loading, and unloading of materials such as pellets, granules, fines, and other products from iron ore and other minerals. This process significantly reduces the emission of particulates in an operational area.

Abstract: This invention relates to compositions which are capable of sequestering calcium ions and are derived in part from renewable carbohydrate feedstocks. The calcium sequestering compositions are mixtures containing one or more hydroxycarboxylic acid salts, one or more oxoacid anion salts, and one or more citric acid salts.

Abstract: A semi-finished product is disclosed including fibrous materials, binders, 15 to 90% by volume metal fillers, and 0 to 15% by volume non-metal inorganic fillers. The total content of the fillers is not more than 90% by volume of the semi-finished product. The invention further relates to metal materials and processes for manufacturing the materials and semi-finished products and uses thereof.