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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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6565773 |
Conductive paste
There is provided conductive paste wherein conductive fillers composed of copper micro-fibers are mixed into thermoplastic resin or thermosetting resin.
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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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6254652 |
At least three-step molten metal decomposition process cycle
Sequential processing of hydrogen rich and hydrogen deficient feeds (14 and 16) in a heat balanced, single molten metal bath (40) to produce both 90+ mole % hydrogen (90) and one or more lower...
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5670033 |
Process for making copper metal powder, copper oxides and copper foil
This invention is directed to a process for making copper metal powder from copper-bearing material, comprising: (A) contacting said copper-bearing material with an effective mount of at least one...
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5622615 |
Process for electrowinning of copper matte
A sulfur dioxide free process for the production of high purity metallic copper from copper-matte wherein copper-matte is leached under oxidizing conditions in a ferric-containing acid copper...
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5574956 |
Method and apparatus for treatment sulphidic concentrates
A method for oxidizing treatment of molten matte and at the same time directly smelting sulphidic concentrate in a refractory-lined liquid bath reactor, e.g. a converter, into which oxidizing air...
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5344479 |
Upgrading copper sulphide residues containing nickel and arsenic
A process is disclosed for separating and recovering nickel and copper values from a nickel-copper matte which may contain iron and arsenic. Finely divided nickel-copper matte is leached in aqueous...
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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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4895593 |
Process of recovering molten pig iron or steel pre-products from lumpy iron-oxide and scrap using a fluidized bed
This is disclosed a process of recovering molten pig iron or steel pre-products from lumpy iron-oxide containing charging substances. The charging substances are reduced to sponge iron in a direct...
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4666514 |
Hydrometallurgical process for recovering silver from copper-electrolysis anode sludge
A hydrometallurgical process for recovering pure silver from sludge formed at the anode in copper electrolysis and other sources comprises suspending the sludge, after removing Pb, Ni, and Cu, in...
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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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4478698 |
Process for recovering copper and molybdenum from low grade copper concentrates
Low grade copper concentrates containing molybdenum are roasted under conditions to form copper and molybdenum compounds which are soluble in dilute sulfuric acid solutions. Molybdenum is then...
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4468302 |
Processing copper-nickel matte
Feed material, such as matte, containing nickel and copper values and sulfur, is leached with an acidic copper sulfate solution to dissolve nickel, cobalt and other metal values and to cement...
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4406696 |
Process for recovering of metals from solutions of metal salts
The process for recovering metals of the 1 st , 2 nd , 4 th , 5 th , 6 th , 7 th and 8 th sub-group of the periodic law from solutions of their salts, particularly from solutions containing...
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4378245 |
Distillation process for separating silver and copper chlorides
Purification of cuprous chloride is accomplished by distillation wherein cuprous chloride is recovered as the overhead product, and substantially all of the silver chloride and other impurities...
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4312667 |
Method of forming large, minimal grain copper billet
A recrystallized copper billet in excess of one and one-half inches in diameter is formed as an essentially single-grain or crystal copper. A high conductivity, oxygen-free copper billet is...
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4274870 |
Smelting of copper concentrates by oxygen injection in conventional reverberatory furnaces
A process for the modification to existing and conventional reverberatory furnaces for smelting copper concentrates in such furnaces, for improving the thermal efficiency of the furnace and for...
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4236918 |
Recovery of elemental sulfur and metal values from tailings from copper recovery processes
Process for recovery of copper, molybdenum, gold and elemental sulfur in tailings from hydrometallurgical processing of copper sulfide ores, particularly chalcopyrite. The tailings are usually...
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4201573 |
Recovery of metal values from a solution by means of cementation
A method for the recovery of metal values from a solution by means of a cementation reaction in an oscillating container wherein the resulting cementate is converted by pyrometallurgical methods...
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4178174 |
Direct production of copper metal
The invention disclosed is a process for the direct production of copper metal by directing an aqueous slurry of cupriferous material into a molten cupriferous bath maintained at a temperature of...
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4164418 |
Method of recovering valuable metals from zinc bearing materials and blast furnace relevant thereto
The blast furnace in the present invention comprises a V-shaped or an inclined hearth, tuyeres disposed along said hearth, a tap hole for discharging matte and/or slag, said tap hole being disposed...
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4164416 |
Metal recovery process
A process for the recovery of copper or lead from a sulfide ore concentrate containing the same. The ore concentrate, a carbonaceous material, an alkali metal carbonate and gaseous oxygen are...
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4110106 |
Selective sulfation process for partitioning ferrous and non-ferrous values in an ore
Process for quantitatively converting non-ferrous metals chosen from the group consisting of copper, nickel, cobalt, vanadium, and manganese in an ore concentrate to soluble sulfates and...
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4071357 |
Process for recovering zinc from steel-making flue dust
A method for recovering a substantially impurity-free zinc oxide product from steel-making flue dust or a similar material which comprises leaching the flue dust with concentrated ammonia and...
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4034063 |
Process for control of SO.sub.x emissions from copper smelter operations
Process for control of SO x emissions from copper smelter operations involving pyrometallurgical reduction of copper ores to elemental copper in which the gases from reverberatory furnaces,...
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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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3958978 |
Process for copper metal ore reduction
Ores containing copper metal are reduced to the metal by mixing them with a carbonate catalyst, both being in the finely divided state, then mixing them with a chemical liquid solution comprised...
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3918962 |
Process for winning copper using carbon monoxide
Process of winning copper from chloride containing solutions by treating with carbon monoxide. Process makes copper separable from iron, and can be applied to leach solutions prepared by treating...
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3880650 |
Recovery of copper from chalcopyrite
Copper concentrate is mixed with iron and a fusible salt or fusible salt mixture which is molten at the roasting temperature. The mixture is roasted in a non-oxidizing atmosphere at a temperature...
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3853543 |
PROCESS FOR PRODUCING ELEMENTAL COPPER BY REACTING MOLTEN CUPROUS CHLORIDE WITH ZINC
A method is provided for processing copper-bearing materials such as copper scraps and copper concentrates to produce elemental copper. The copper-bearing materials are reacted with a ferric...
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3850620 |
PYROMETALLURGICAL PROCESS FOR PRODUCING METALLIC COPPER FROM COPPER SULFIDE CONCENTRATES
The invention utilizes a modified Peirce-Smith converter to smelt copper sulfide concentrates and to produce flue gases sufficiently high in SO 2 content to be useful for the production of...
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3819362 |
COPPER CONVERTING PROCESS WITH PROLONGED BLOWING PERIOD
In certain copper pyrometallurgical processes, smelting results in a two-layer system comprising an underlying molten copper-sulfide, iron-sulfide matte, which often undesirably contains nickel,...
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3791817 |
RECOVERY OF COOPER FROM COPPER SULFIDE CONTAINING CONCENTRATES
Low grade copper sulfide containing concentrates and ores are treated with an alkaline cyanide, such as calcium cyanide and excess lime or sodium cyanide and excess sodium alkali. This dissolves...
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3790370 |
REMOVAL AND RECOVERY OF METALS FROM POLLUTED WATERS
A process for removing metal ions such as mercury, copper, cadmium, zinc, lead, nickel or silver from polluted waters includes causing the metal polluted water and a sulfur-containing precipitating...
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3776718 |
RECOVERY OF COPPER AND STEEL FROM SCRAP
Scrap items containing copper and iron in physical admixture, such as electrical and electronic scrap, are pretreated with an aqueous reagent, such as an alkali metal sulfate or silicate, prior to...
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3640703 |
CYCLIC INTEGRATED COPPER PROCESS
A cyclic integrated process for the production of copper metal is provided. In this process, copper ores or copper ore concentrates or, optionally, cement copper is converted to copper metal...
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3615361 |
FIRE REFINING OF COPPER
A process is disclosed for fire-refining copper sulfide having a copper to nickel ratio of more than about 7:3, which process comprises maintaining a molten bath of copper sulfide in a turbulent...
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3476553 |
PRECIPITATE FLOTATION PROCESS
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3473921 |
METHOD FOR RECOVERY OF NOBLE METALS
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3321303 |
Recovery of copper
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3314783 |
Process for the recovery of molybdenum values from ferruginous, molybdenum-bearing slags
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3311466 |
Reduction of metal oxides
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3303021 |
Recovery of copper from low-grade copper sulfide ores
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3301660 |
Metal purification process
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3186833 |
Method for reducing copper oxide
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3681056 |
Title is not available
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3796568 |
Title is not available
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3832163 |
Title is not available
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