With Synthetic Polymer, Natural Polymer, Or Carbohydrate Patents (Class 75/767)
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Patent number: 11633782Abstract: In a three-dimensional printing method example, a liquid functional agent is selectively applied. The liquid functional agent includes an alloying agent. A metallic build material is applied. The liquid functional agent is selectively applied before the metallic build material, after the metallic build material, or both before and after the metallic build material. The liquid functional agent patterns the metallic build material to form a composite layer. At least some of the metallic build material is exposed to energy to melt the at least some of the metallic build material to form a layer. Upon contact or after energy exposure, the alloying agent and the build material alter a composition of the composite layer.Type: GrantFiled: April 19, 2016Date of Patent: April 25, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Mohammed S. Shaarawi, James McKinnell, Vladek Kasperchik, David A. Champion, Greg Scott Long
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Patent number: 11351603Abstract: Provided is a mixed powder for powder metallurgy that contains a readily available compound as a lubricant, does not need to contain a stain-causing metal soap, has excellent ejection properties and compressibility, and can exhibit excellent fluidity without deteriorating the ejection properties or the compressibility even in the case of further containing carbon black. The mixed powder for powder metallurgy comprising an (a) iron-based powder and a (b) lubricant, wherein the (b) lubricant is an ester of disaccharide and fatty acid represented by R—COOH, and the R is an alkyl group having 11 or more carbon atoms or an alkenyl group having 11 or more carbon atoms.Type: GrantFiled: September 20, 2019Date of Patent: June 7, 2022Assignee: JFE STEEL CORPORATIONInventors: Hanako Shimamoto, Shigeru Unami
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Patent number: 11124855Abstract: A process for pelletizing particles of a fine mineral ore, the process comprises the steps of a) mixing the particles of a fine mineral ore with a binder composition to obtain a pellet feed, b) forming the pellet feed into balls, c) drying the balls to form dried balls, d) preheating the dried balls at 60 to 105° C. until constant weight to form preheated balls, e) subsequently heating the preheated balls to a temperature of 1200° C. to 1400° C. to obtain pellets, wherein the binder composition comprises a) at least one colloid agent which exerts a cohesive force on the particles of a fine mineral ore forming the pellets, and b) at least one synthetic polymer which disperses the particles of a fine mineral ore in the pellets, wherein the synthetic polymer is a maleic acid/acrylic acid or a maleic acid/methacrylic acid copolymer.Type: GrantFiled: March 29, 2019Date of Patent: September 21, 2021Assignee: Clariant International Ltd.Inventors: Stefan Dilsky, Carlos Augusto Blasques Tooge, Nilson Mar Bartalini, Almir T. Santos, Wagner Claudio Da Silva, Monica Speck Cassola, Jorge Antonio Arias Medina
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Patent number: 9096914Abstract: The present invention describes an advantageous and effective streamlined process for the production of iron ore pellets, the green pellets replacing the burnt pellets for covering the metallic surface in “travelling grate” furnace during the burning step, the process comprising at least some or all of the steps of grinding the iron ore; filtering the crushed iron ore; mixing the filtered iron ore with at least one binder; pelletizing the mixture; drying the green pellets; transferring the pellets to the side and bottom grids of a “travelling grate” furnace equipment and screening the burnt iron ore pellets. An optimized process for the production of iron ore pellets is provided that is innovative, efficient and economical when compared to currently known processes.Type: GrantFiled: July 23, 2013Date of Patent: August 4, 2015Assignee: VALE S.A.Inventors: Hamilton Porto Pimenta, Marcus Eduardo Emrich Botelho
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Publication number: 20140190310Abstract: The instant invention relates to a binder composition for pelletization of fine mineral particles comprising a) at least one colloid agent which exerts a cohesive force on the mineral particles forming the pellets, and b) at least one synthetic polymer which disperses mineral particles evenly in the pellets.Type: ApplicationFiled: July 3, 2012Publication date: July 10, 2014Applicants: CLARIANT S.A., CLARIANT FINANCE (BVI) LIMITEDInventors: Carlos Augusto Blasques Tooge, Nilson Mar Bartalini, Almir T. Santos, Wagner Claudio Da Silva, Monica Speck Cassola, Jorge Antonio Arias Medina
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Publication number: 20140033872Abstract: Binder compositions for agglomerating iron ore fines are provided, the compositions comprising: (a) about 30 to about 80% by weight one or more types of anionic or nonionic acrylamide-containing polymer; (b) about 10 to about 35% by weight one or more types of inorganic or organic monomeric electrolyte; and (c) about 10 to about 35% one or more types of finely ground wood fiber. A process for preparing iron ore pellets with the binder compositions is also provided, the process comprising: (i) adding a binder composition to particulate iron ore to form a mixture; and (ii) forming the mixture into pellets.Type: ApplicationFiled: August 6, 2013Publication date: February 6, 2014Inventors: Mika Martikainen, Matias Penttiinen, Veli-Matti Vuorenpalo, Forrest Strickland, Wayne Bull
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Publication number: 20100005928Abstract: A method is provided for producing an agglomerated material that is used for producing metallic iron by heat reduction in a moving hearth-type reducing furnace, wherein the agglomerated material can have a high mechanical strength without increases in the binder content and the moisture content of the material mixture. The method for producing an agglomerated material used for producing metallic iron, wherein the agglomerated material is produced by agglomerating a material mixture containing an iron-oxide-containing material, a carbonaceous reducing agent, a binder, and moisture; drying the material mixture; and charging and heating the material mixture in a moving hearth-type reducing furnace to reduce the iron oxide contained in the material mixture with the carbonaceous reducing agent, wherein a carbohydrate is used as the binder and the material mixture is left to stand prior to the agglomeration.Type: ApplicationFiled: March 24, 2006Publication date: January 14, 2010Applicant: MESABI NUGGET LLCInventor: Mike Osmundson
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Patent number: 6780222Abstract: A method for agglomerating and sintering iron and zinc ore and ore concentrates, steel mill ferrous waste and zinc mill waste. The method has the steps: a) mixing the wastes or ore with a combustion fuel source, and a sinter agglomeration agent selected from the group consisting of sodium silicate, water soluble polymers and aqueous emulsions of oils to form an agglomerated sinterable mixture comprising agglomerated particles; b) forming the sinterable mixture into a sinter bed on the grate of a sinter machine; and c) igniting the sinter bed to create a temperature sufficient to sinter the agglomerated particles.Type: GrantFiled: September 3, 2002Date of Patent: August 24, 2004Assignee: General Electric CompanyInventor: Donald C. Roe
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Publication number: 20030041693Abstract: A method for agglomerating and sintering iron and zinc ore and ore concentrates, steel mill ferrous waste and zinc mill waste. The method has the steps: a) mixing the wastes or ore with a combustion fuel source, and a sinter agglomeration agent selected from the group consisting of sodium silicate, water soluble polymers and aqueous emulsions of oils to form an agglomerated sinterable mixture comprising agglomerated particles; b) forming the sinterable mixture into a sinter bed on the grate of a sinter machine; and c) igniting the sinter bed to create a temperature sufficient to sinter the agglomerated particles.Type: ApplicationFiled: September 3, 2002Publication date: March 6, 2003Inventor: Donald C. Roe
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Publication number: 20020189405Abstract: A binder, and a method of using it in conventional powder metallurgy processes and solid free form fabrication including metal powder, or combinations of metals and ceramics, in which the binder contains at least one carbohydrate as the active binding compound. The carbohydrate generally contains between 6 and about 900 carbon atoms and may be selected from various categories including but not limited to: 1) monosaccharides; 2) disaccharides; 3) trisaccharides; and 4) polysaccharides containing the base sugars identified in 1)-3) above; and 5) hydrolyzed starches in which the hydrolysate contains between about 6-900 carbon atoms, including dextrins such as limit dextrin, hydrolyzed amylose, and hydrolyzed amylopectin. The amount of carbohydrate in the binder solution is generally on the order of about 5-50 grams carbohydrate per 100 ml of carrier solution, more preferably 5-30 g/ml, and most preferably 15 g/ml (or comparable amounts on a dry basis).Type: ApplicationFiled: April 25, 2001Publication date: December 19, 2002Inventors: Jianxin Liu, Michael Rynerson
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Patent number: 6152985Abstract: A process is provided for pelletising a metal ore comprising forming an intimate mixture of particulate ore and a binder in the presence of moisture, forming green pellets by agitation of the mixture and firing the green pellets to produce ore pellets. In the process the binder comprises a hydroxamate polymer made from water-soluble ethylenically unsaturated monomer or monomer blend and which has pendant groups of the formula ##STR1## This provides advantages in wet strength, dry strength and drop number of pellets, especially at low moisture content of the pellets.Type: GrantFiled: November 12, 1998Date of Patent: November 28, 2000Assignee: Ciba Specialty Chemicals Water Treatments LimitedInventor: Anthony Peter Allen
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Patent number: 6149712Abstract: A process for increasing the particles size of fines of a titaniferous mineral containing more that 45% by weight of titanium. The process comprises mixing the fines with a binding agent and water to produce an agglomerate. The agglomerate is then dried and sintered.Type: GrantFiled: March 19, 1997Date of Patent: November 21, 2000Assignee: Commonwealth Scientific & Industrial Research OrganisationInventors: John Sydney Hall, Ken George Carey, Michael John Hollitt
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Patent number: 5922261Abstract: Iron-rich material waste products, such as electric arc furnace dust, are formed with an organic binder into discrete shapes, such as briquettes and/or other solid shapes. The shapes can then be used in iron and steel making processes and the iron and heavy metal values in the waste product recovered.Type: GrantFiled: June 18, 1998Date of Patent: July 13, 1999Assignee: Covol Technologies, Inc.Inventor: George W Ford, Jr.
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Patent number: 5589118Abstract: Iron-rich-material waste products, such as electric arc furnace dust, are formed with an organic binder into discrete shapes, such as briquettes. The shapes can then be used in iron and steel making processes and the iron and heavy metal values in the waste product recovered.Type: GrantFiled: June 6, 1995Date of Patent: December 31, 1996Assignee: Covol Technologies, Inc.Inventors: George W. Ford, Jr., Richard C. Lambert, Russell G. Madsen
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Patent number: 5554207Abstract: A process for recovering iron values from waste iron oxide, especially iron oxide dust from steelmaking furnaces, wherein the iron oxide is mixed with a water-insoluble thermoplastic material and heated to melt the plastic to form a binder for the iron oxide particles, and discrete bodies formed of the mixture are returned to a furnace to recover the iron values. The plastic binder is present in an amount sufficient to serve as a reductant to reduce the iron oxide to metallic iron when the plastic is combusted with oxygen in the furnace. The invention also includes the discrete bodies so formed of iron oxide and thermoplastic binder.Type: GrantFiled: November 25, 1994Date of Patent: September 10, 1996Assignee: USX CorporationInventors: Eugene A. Bogdan, Alvin A. Terchick
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Patent number: 5443788Abstract: The subject invention relates to method for briquetting fines and ultrafines comprising mixing the fines and ultrafines on a continuous basis with a binder system having low viscosity of up to about 200 cps and at least 50% solids, such that the resulting briquette contains less than about 3% binder by weight of the briquette.Type: GrantFiled: December 9, 1993Date of Patent: August 22, 1995Assignee: Palsat International, Inc.Inventors: Francis S. Palowitz, Sudarshan R. Sathe
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Patent number: 5435834Abstract: Particulate ore is pelletized by forming an intimate mixture with particulate binder in the presence of moisture, forming green pellets by agitation of the mixture and then firing these to produce ore pellets and the particulate binder comprises particles of a water soluble, partly cross-linked, polymer formed from water soluble, ionic, ethylenically unsaturated monomer or monomer blend, wherein the extent of cross-linking is insufficient to render the particles predominantly water insoluble but is sufficient to increase the dry strength of the ore pellets.Type: GrantFiled: February 2, 1994Date of Patent: July 25, 1995Assignee: Allied Colloids LimitedInventor: Anthony P. Allen
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High performance binder/molder compounds for making precision metal part by powder injection molding
Patent number: 5421853Abstract: A binder composition for use in making metal parts via a metal powder injection molding process containing the following components: (a) a first polymer with a relatively low solubility parameter such as polyethylene and polypropylene; (b) a second polymer with a relatively high solubility parameter such as polystyrene and poly(methyl methacrylate); and (c) a block copolymer containing blocks of the first and second, or other structurally similar, constituting monomeric units. Examples of the block copolymers include ethylene/styrene copolymer, propylene/styrene copolymer, and isoprene/styrene copolymer, etc. The binder composition is dispersed in an appropriate dispersant, such as an oil or wax, then blended with a metal powder to form a metal powder injection composition. The metal powder injection composition forms a green compact with a predetermined shape and dimension using an injection molding machine. Finally the green compact is sintered to form the final product.Type: GrantFiled: August 9, 1994Date of Patent: June 6, 1995Assignee: Industrial Technology Research InstituteInventors: Wen-Hsin Chen, Minh-Jhy Jiang, Chao-Shiun Lin, Kuo-Yao Weng, Ming-Shyong Lai, Jiann-Tsair Jeng -
Patent number: 5302341Abstract: The subject invention relates to method for briquetting fines and ultrafines comprising mixing the fines and ultrafines on a continuous basis with a binder system having low viscosity of up to about 200 cps and at least 50% solids, such that the resulting briquette contains less than about 3% binder by weight of the briquette.Type: GrantFiled: October 29, 1992Date of Patent: April 12, 1994Assignee: Palsat International, Inc.Inventors: Francis S. Palowitz, Sudarshan R. Sathe
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Patent number: 5147452Abstract: Minor amounts of water insoluble elastomeric polymers are combined with oil which is applied in an aqueous spray as an agglomeration aid.Type: GrantFiled: April 24, 1991Date of Patent: September 15, 1992Assignee: Betz Laboratories, Inc.Inventors: Dale J. Anderson, David C. Cloutier
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Patent number: 5002607Abstract: Particulate metal ore is pellitized by use of a novel polymeric binder that comprises aggregates of polymer particles and that have a size mainly above 100 .mu.m and the aggregates are disintegrated during the process.Type: GrantFiled: December 28, 1989Date of Patent: March 26, 1991Assignee: Allied Colloids Ltd.Inventors: Peter Flesher, John R. Field
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Patent number: 4919711Abstract: A binder useful for agglomerating a concentrated ore material in the presence of water comprising (a) a water-soluble polymer selected from the group consisting of alkali metal salts of carboxymethyl celluylose or carboxymethyl hydroxyethyl cellulose and (b) sodium tripolyphosphate, a process for agglomerating the concentrated ore material using this binder, and the agglomerated product of this process, are disclosed.Type: GrantFiled: May 1, 1989Date of Patent: April 24, 1990Assignee: Aqualon CompanyInventors: Bruce E. Banyai, Denis E. LaSota, Dennis L. Struck