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7604680 |
Producing nickel-base, cobalt-base, iron-base, iron-nickel-base, or iron-nickel-cobalt-base alloy articles by reduction of nonmetallic precursor compounds and melting
A metallic article is produced by furnishing one or more nonmetallic precursor compound comprising the metallic base nickel, cobalt, iron, iron-nickel, or iron-nickel-cobalt, and at least one...
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7585350 |
Production of ferronickel
A process for producing a ferronickel product from a mixed nickel iron hydroxide product, said process including the steps of: providing a mixed nickel iron hydroxide product; pelletising the mixed...
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7341658 |
Recovery of heavy minerals from a tar sand
A process for recovering heavy minerals (e.g., titanium minerals such as TiO 2 ) from a feedstock comprising tar sands or a tar sands-derived solids fraction. The feedstock comprises bitumen and...
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6773485 |
Method for recovering catalytic metals using a porous metal filter
A method for recovering catalytic metals from fluid compositions containing catalytic metal colloids. Fluid compositions such as aqueous rinse solutions or dragout baths containing catalytic metal...
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6652620 |
Method for manufacturing reduced iron briquettes
A method for cooling hot reduced iron briquettes at low cost without degrading the strength is provided. The method includes a primary cooling step of cooling the hot reduced iron briquettes by...
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6500229 |
Method for treating steel works dust by wet process
A method for treating steel works dust in order to recuperate elements capable of being upgraded. The method comprises attrition in water followed by hydraulic grading of the resulting load. The...
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6402807 |
Method for wet smelting of iron family metal bearing ores
A smelting process wherein very pure iron or various iron family metals are economically obtained from ores which contain iron family metals by hydrometallurgy. The process involves: (a) grinding...
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6274104 |
Non-ferrous metal recovery method utilizing a melt sulphation reaction
The invention relates to a method for recovering non-ferrous metals, particularly nickel, cobalt, copper, zinc, manganese and magnesium, from materials containing said metals by converting said...
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6193941 |
Process for producing a metallurgical raw material from oil containing heavy metals
Besides a synthesis gas, a metallurgical raw material is to be produced from an oil containing heavy metals. To do this, the oil is partially oxidized and the heavy metal-containing soot is...
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6019813 |
Cobalt metal agglomerates, process for producing the same and their use
The present invention relates to cobalt metal agglomerates consisting of peanut-shaped primary particles with average particle sizes in the range from 0.5 to 2 μm, to a process for the production...
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6015447 |
Cobalt metal agglomerates, a method of producing them and their use
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5968228 |
Process for preparing cobalt metals using nitrogen reductant
The present invention relates to a process for preparing cobalt metals by reducing cobalt oxides with ammonia or nitrogen/hydrogen gas mixtures. In accordance with the present invention, a cobalt...
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5849063 |
Production of direct reduced iron and/or pig iron from industrial waste streams
A method for producing direct reduced iron or/and pig iron from an industrial waste materials stream such as EAF and blast furnace dust generally comprising the steps of separating the materials...
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5772728 |
Method for upgrading of silicon-containing residues obtained after leaching of copper-containing residues from chlorosilane synthesis
The present invention relates to a method for upgrading silicon-containing solid residues obtained after leaching of copper from copper-containing residues from direct synthesis of...
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5702500 |
Integrated process for the recovery of metals and fused alumina from spent catalysts
An integrated process for the treatment of spent catalysts containing mainly molybdenum, vanadium, nickel, cobalt and, alumina to produce ammonium metavanadate, vanadium pentoxide, molybdic...
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5667665 |
Process of producing high purity cobalt
A process for producing a high purity cobalt is provided comprising the following steps. An aqueous solution of cobalt chloride having a hydrochloric acid concentration of 7 to 12N is provided. The...
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5582631 |
Method for the production of a feedstock containing usable iron constituents from industrial waste streams
A method for the production of an iron-based feedstock suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by combining an iron poor material such as...
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5578110 |
Environmentally acceptable method of disposing of an inflator from an air bag system loaded in a scrapped automobile
A method by which numerous gas generators from unused air-bags can be scrapped in an environmentally acceptable manner. The method consists of a) heating the gas generator to actuate the...
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5571308 |
Method for recovering nickel from high magnesium-containing Ni-Fe-Mg lateritic ore
A method is provided for recovering nickel from high magnesium-containing lateritic ores which also contain iron. The ores which are referred to as saprolitic ores are subjected to leaching with a...
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5571306 |
Method for producing an enriched iron feedstock from industrial furnace waste streams
A method for the production of an enriched iron product, specifically direct reduced iron and iron oxide suitable for use as the feedstock for steel mills, from industrial waste streams containing...
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5534155 |
Method for purification of cooling agents and/or lubricants used in rolling mills
For purification of liquids used for cooling and/or lubrication interspersed with metallic and/or other materials contaminations, especially for separation of rolling scale and of substances...
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5385600 |
Method for beneficiating nickel sulfide concentrates and corresponding mixtures, unsuitable for smelting
The invention relates to a method for fully beneficating nickel sulfide concentrates or other corresponding mixtures, unsuitable for smelting, by combining the use of both pyrometallurgical and...
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5364441 |
Cotreatment of sewage and steelworks wastes
Steelworks dusts or sludge is mixed into sewage preferably in the presence of a flocculating agent to provide a rapid separation of a clear effluent and a sludge which is dewatered and dried to...
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5352270 |
Method for recycling metal containing electrical components
The present invention relates to methods of recycling metal containing electrical components to recover one or more metal values therefrom by comminuting the used metal containing electrical...
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5124008 |
Method of extraction of valuable minerals and precious metals from oil sands ore bodies and other related ore bodies
A method for the extraction of valuable minerals and precious metals from oil sands ore bodies or other related ore bodies that is synergistically unique in the arrangement of processes for...
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4986977 |
Recovery of useful products from by-products of phosphate conversion coating process
The process is described for treating the sludge formed in a phosphate conversion bath, and in particular, in zinc phosphate conversion baths to convert the sludge into useful chemical materials...
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4954265 |
Method of processing spent electroless bath and bath for use therein
A method of processing an aqueous feed liquid to precipitate at least one metal (e.g., copper, nickel or a combination thereof) in a form to make the metal subsequently removable from the feed...
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4840776 |
Method for removing sodium and ammonia from cobalt
A method is disclosed for purifying cobalt of sodium and ammonia which involves heating a solution of hexammine cobalt (III) chloride at a temperature of at least about 80° C., adding sodium...
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4830997 |
Process for regenerating used catalysts by means of hydrogen peroxide aqueous solution stabilized with an organic compound
The process has as an object the regeneration of catalysts containing at least one contaminating metal of the vanadium, nickel and iron group. The operation is conducted as follows: (a) The...
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4826666 |
Method of preparing metal carbides and the like and precursors used in such method
Preparation of metal carbides, nitrides, borides, silicides and phosphides, also metal alloys and pure metals, by providing a precursor in which there are organic ligands bonded to the metal or...
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4816236 |
Recovery of vanadium and nickel from petroleum residues
A process is provided for the recovery of vanadium and nickel values from petroleum residues and, in particular, from Flexicoke. In the process, Flexicoke is blended with an alkali metal source,...
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4585477 |
Method for separating and recovering nickel and copper from complex materials
A method of recovering copper and nickel from sulphidic minerals containing copper, nickel and iron comprises the steps of roasting the mineral, preferably to provide magnetite; sulphating, for...
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4561887 |
Process for recovering metals from solution through solvent extraction and pyrometallurgical reduction
Solvent extraction is used for selective recovery of a dissolved metal such as copper from an aqueous solution of metals by means of an organic liquid, immiscible with the aqueous solution and...
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4466828 |
Process for smelting nickel
The present invention concerns a process for smelting nickel which comprises treating nickel-containing material with a reducing gas to reduce the nickel component contained in the...
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4425228 |
Wet-classifying method for recovery of carbon and iron-bearing particles
A method for separating carbon and iron bearing particles from zinc and lead bearing particles contained in an aqueous slurry of blast furnace dust and the recovery and reuse of the carbon and iron...
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4416693 |
Recovery of titanium metal values
Titanium metal values may be recovered from a metal-bearing source containing titanium and iron by subjecting the source to an oxidation treatment and a reductive roast. After having crushed the...
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4306901 |
Process for forming steel product from iron while avoiding the liquid state
Steel is made from iron ore by comminuting the ore and recovering a particle fraction which has a size less than 50 microns. The iron rich particles then are reduced to form iron or magnetite and...
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4298379 |
Production of high purity and high surface area magnesium oxide
Disclosed is a process for refining a magnesium and nickel containing ore, comprising the steps of grinding the ore; preparing a slurry of the ground ore in sulfuric acid containing less than ten...
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4280839 |
Recovery of metal values from a metal bearing source of nickel and vanadium
Metal values may be recovered from metal bearing sources which contain at least two metals, at least one of which is in the form of a sulfide, by treating the aforesaid source with an oxidant at an...
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4272288 |
Concentration, separation and recovery of precious metals
A process is provided for the concentration, separation and/or recovery of precious metals such as platinum and palladium via their soluble amine complexes from solutions by sorbing said complexes...
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4234333 |
Process for recovering metal carbide powder from cemented carbides
A process for recovering metal carbide powders from cemented carbides containing a metal binder phase by anodic dissolution of the binder phase under controlled electrochemical potential and...
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4199349 |
Production of sponge iron
A process for producing feedstock of highly metallized reduced iron from a metalliferrous slurry in which the slurry is subjected to high pressure filtration (9) and the resultant filter cake is...
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4178176 |
Recovery of iron and titanium metal values
Iron metal values and titanium metal values may be recovered from iron and titanium bearing sources such as ilmenite by subjecting the source to a reductive roast followed by leaching of the...
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4152138 |
Method for separating a mixture of molten oxidized ferrophosphorus and refined ferrophosphorus
A molten mixture of oxidized ferrophosphorus and refined ferrophosphorus is separated by contacting a free-falling stream of the molten mixture with a water jet or jets aligned with the...
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4115110 |
Vanadium recovery process
A process for recovering vanadium values from carbonaceous type vanadium ores, and vanadium scrap, such as vanadium contaminated spent catalyst, is disclosed which comprises roasting the vanadium...
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4072510 |
Production of ferrochrome alloy
Chromium or other metal carbides are recovered from chromates or equivalent soluble metal salts in substantially pure form by solid state carburization. The chromates may be derived from low grade...
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4022866 |
Recovery of metals
Copper, zinc and nickel are recovered from sulfide concentrates prepared from ores of one or more such metals by subjecting such concentrate to a leaching operation which comprises slurrying the...
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4018680 |
Process for separating iron, zinc and lead from flue dust and/or flue sludge
There is disclosed a process for separating iron, zinc and lead from flue dust and/or flue sludge, wherein the three following reaction stages are performed in the aqueous phase: A. Oxidation of...
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4002463 |
Upgrading the nickel content from low grade nickel lateritic iron ores
The nickel content from low grade nickel lateritic iron ore is upgraded by a combined process of segregation and magnetic separation or flotation. Ground ore is thoroughly mixed with a small...
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3966455 |
Process for ilmenite ore reduction
Ilmenite, one of the two natural occurring ores containing Titanium metal, is plentiful in comparison to the other, Rutile. However, Ilmenite can hardly compete with Rutile for Titanium metal...
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