|
Match
|
Document |
Document Title |
|
|
6500232 |
Interfacial crud removal system for solvent extraction and method for solvent extraction
Process and equipment for the removal of crud from the interface between aqueous and organic layers in SX settlers in which at least one rotatable auger is positioned at or near the interface to...
|
|
|
6485542 |
Ni-Fe alloy sputtering target for forming magnetic thin films, magnetic thin film, and method of manufacturing the Ni-Fe alloy sputtering target
An Ni—Fe alloy material suitable for forming a ferromagnetic Ni—Fe alloy thin film is provided. The magnetic thin film produces a small number of particles during sputtering, and excels in...
|
|
|
6471743 |
Methods for leaching of ores
Disclosed and claimed are efficient methods for leaching minerals from ores using an acidic solution such as sulfuric acid. Additional factors which can improve mineral recovery include the use of...
|
|
|
6432166 |
Dust control
Process for the control of dust on ore handling points comprising applying to the ore an aqueous solution of an alkyl polyglucoside having an average of from 8 to 12 carbon atoms and a degree of...
|
|
|
6423117 |
Extraction of valuable metal by acid cyanide leach
The invention is concerned with techniques and apparatus suitable for extraction of at least one valuable metal such as one or more of: gold, platinum, silver, cobalt, nickel, molybdenum, and...
|
|
|
6409799 |
Copper leach process aids
Methods for enhancing the leaching of copper from copper bearing ores with an aqueous sulfuric acid leach solution are disclosed wherein an antifoam formulation stable at a solution pH of about 1...
|
|
|
6395061 |
Process for organic acid bioleaching of ore
A process for leaching an ore that contains nickel and magnesium includes mixing a microorganism that is capable of producing an organic acid, a nutrient, and an ore that contains nickel and...
|
|
|
6391089 |
Acid leaching of nickel laterite ores for the extraction of their nickel and cobalt values
An improved process of hydrometallurgical treatment of laterite ores predominantly of the limonitic type for the recovery of nickel and cobalt using sulphuric acid. In order to obtain high...
|
|
|
6387240 |
Method for the removal of sulfur in the nickel leaching process
Invention relates to a method for the removal of sulfur from the leaching cycle of nickel processes such as leaching of nickel matte. According to the method, anolyte generated in nickel...
|
|
|
6375713 |
Use of cupric chloride etchant solution in a solvent extraction electrowinning copper refinery
Process for improving recovery of copper and reducing raw material costs, from a copper-containing source by SX-EW. The process comprises the steps of mixing an acidic copper-containing PLS...
|
|
|
6338748 |
Hydrometallurgical method for recovery of zinc from electric arc furnace dust
The process uses hydrochloric acid solutions to extract zinc from electric arc furnace dusts containing zinc oxide and zinc ferrite. To selectively leach zinc and minimize iron dissolution by...
|
|
|
6325840 |
Process for treating by-products from zinc smelting and the like
A process for treating zinc mine tailings wherein a series of wave tables and cone separators are utilized to remove various components from the zinc mine tailings, such as carbon, zinc, lead,...
|
|
|
6312500 |
Heap leaching of nickel containing ore
A process is provided for heap leaching ore to recover nickel. The process is particularly effective for ores that have a tangible clay component (i.e., greater than about 10% by weight). The...
|
|
|
6280501 |
Base metal recovery
A process for recovering a base metal from a material, the base metal being selected from cobalt, copper, nickel and zinc, the process comprising the steps of reacting the host material with a...
|
|
|
6264720 |
Separation of heavy metals and materials for use in this
The present invention concerns a composition and method for separating heavy metals from contaminated substrates with compositions containing active agent selected from the group consisting of...
|
|
|
6245125 |
Copper, nickel and cobalt recovery
A process for the recovery of copper and nickel from a copper and nickel sulphide concentrate in slurry form. The slurry is subjected to a biological oxidation turning the copper sulphide to...
|
|
|
6241807 |
System for recovery of metals from solutions thereof
A system for recovery of metals from solutions containing dissolved metals. The system includes an apparatus and method for placing supercritical carbon dioxide that contains an extractant in...
|
|
|
6214088 |
Immobilized bioreactor method for sulphidic minerals and other particulate solids
A method and apparatus for bioprocessing particles wherein particles are entrapped a porous material and have biologically active microorganisms on their surfaces. A liquid (carrying oxygen and/or...
|
|
|
6206951 |
Method for leaching nickel from nickel matte
The invention relates to a method for leaching sulfidic nickel matte and particularly copper rich nickel matte, as well as for leaching said matte together with a metallic copper and/or...
|
|
|
6207443 |
Method for initiating heap bioleaching of sulfidic ores
The process of the present invention "jump starts" heap biooxidation of sulfides by incorporating a previously biooxidized material into the heap. The process can be used to recover precious and/or...
|
|
|
6139602 |
Carbon catalyzed leaching of metal-containing ores
Disclosed and claimed is an efficient process for extraction of metals from ores using carbon catalyzed leaching. Specifically exemplified is the extraction of cobalt and nickel from laterite ore.
|
|
|
6131836 |
Methods for treating ores
Metals are rendered analyzable, extractable or recoverable from materials, such as complex or refractory ores, by applying shear deformation forces to the materials. The shear deformation forces...
|
|
|
6107065 |
Nonstirred bioreactor for processing refractory sulfide concentrates and method for operating same
A method of biooxidizing sulfide minerals in a nonstirred bioreactor is provided. According to the disclosed method, a concentrate of sulfide minerals is coated onto a plurality of substrates, such...
|
|
|
6086847 |
Process for treating iron-containing sulfide rocks and ores
A process for treating ores or rocks is provided. The process comprises (1) combining the ores or rocks with an acid passivating agent to produce a first combination; (2) contacting the first...
|
|
|
6086656 |
Method for improving the heap biooxidation rate of refractory sulfide ore particles that are biooxidized using recycled bioleachate solution
A method for improving the heap biooxidation rate of refractory sulfide ore particles that are at least partially biooxidized using a recycled bioleachate off solution is provided. The method...
|
|
|
6063158 |
Sulfide mineral concentrate bioleaching
The subject invention provides a novel process and bioreactor for enhancing the bioleaching of metals from sulfide mineral concentrations.
|
|
|
6053964 |
Apparatus and method for applying a leaching solution to ore
An apparatus for applying a leaching solution to a mass of ore includes a plurality of first tubes which are connected to a supply of leaching solution. Each of the first tubes is fitted with...
|
|
|
6007600 |
Method for producing copper in hydrometallurgical process
The invention relates to a method for producing copper in a hydrometallurgical process from copper-bearing raw materials, such as sulfidic concentrates. The concentrate is leached in a leaching...
|
|
|
5993514 |
Process for upgrading copper sulphide residues containing nickel and iron
There is disclosed a process for separating and recovering nickel and copper values from a nickel-copper matte which may contain iron and arsenic. Finely divided nickel-copper matte undergoes one...
|
|
|
5989311 |
Recovery of copper from its sulfides and other sources using halogen reagents and oxidants
Copper and nickel are extracted from their elemental state, complex sulfides, ores, and other materials such as scrap by leaching them with a solution containing halogen salts: bromine/bromide, or...
|
|
|
5976219 |
Method and apparatus for recycling of scrap metal
A process for the recycling of scrap metal, such as copper wire, comprises the steps of combining the scrap metal with a concentrate of a metal similar to the scrap metal in a pressure vessel (10)...
|
|
|
5976218 |
Process for the recovery of nickel
A process for the recovery of nickel from a nickel containing ore in which the ore, particularly a laterite ore, is initially leached with an aqueous acid solution, after which the nickel is...
|
|
|
5961691 |
Recovery of lead and others metals from smelter flue dusts
The present invention is concerned with a process for extracting and recovering lead or lead derivatives in high purity from various materials containing lead sulphate, and particularly copper...
|
|
|
5917116 |
Method for the processing of copper minerals
A method of processing a copper mineral, the method comprising activating the copper mineral by milling the copper mineral to P80 of between 2 and 20 micron, and subsequently subjecting the...
|
|
|
5912402 |
Metallurgical dust recycle process
A treatment of metallurgical dust and recovery of valuable chemical commodities, comprising the steps of: leaching salts from the dust with water to create a washed EAF dust; reacting the washed...
|
|
|
5885324 |
Method for the production of synthetic rutile
Synthetic Rutile is prepared from raw ilmenite ore by a method comprising activating ilmenite and subjecting it to a multi-stage countercurrent leaching process in hot hydrochloric acid.
|
|
|
5873927 |
Integrated, tank/heap biooxidation process
A metal-containing refractory sulfide ore is split into a first portion and a second portion. The first portion is partially biodigested by a sulfide-digesting microorganism in a biooxidation...
|
|
|
5827348 |
Leaching of precious metal ore with fluoroaliphatic surfactant
A method for improving the recovery of gold and silver from precious metal ore is disclosed. The method comprises contacting precious metal ore with an aqueous solution containing certain...
|
|
|
5827349 |
Method of recycling nickel and cobalt alloy scrap metal contaminated with titanium
The process for removing titanium metal and alloys from nickel metal, nickel metal alloys, cobalt metal and cobalt metal alloys by leaching out the titanium metal and/or alloys with a hydrofluoric...
|
|
|
5820653 |
Process for making shaped copper articles
This invention relates to a process for making a shaped copper article directly from a copper-bearing material, comprising: (A) contacting said copper-bearing material with an effective amount of...
|
|
|
5807421 |
Hydrometallurgical extraction process
A hydrometallurgical process for treating copper feed materials containing gold and/or silver by simultaneously leaching copper, gold and/or silver into an aqueous cyanide solution, extracting...
|
|
|
5779877 |
Recycling of CIS photovoltaic waste
A method for extracting and reclaiming metals from scrap CIS photovoltaic cells and associated photovoltaic manufacturing waste by leaching the waste with dilute nitric acid, skimming any plastic...
|
|
|
5762683 |
Ferric fluoborate/organic extractant hydrometallurgical process for recovering metals
A method is provided for the hydrometallurgical recovery of metal values from sources containing more than one metal of antimony, lead, copper, zinc, bismuth, tin, cadmium and other metals by...
|
|
|
5730776 |
Hydrometallurgical process for the extraction of copper from sulphidic concentrates
There is provided a novel hydrometallurgical process for the extraction of copper from sulphidic concentrates involving an oxidizing pressure leach using dilute sulphuric acid and a carbonaceous...
|
|
|
5709731 |
Slurry pipeline leaching method
A method for concurrently transporting and leaching metal values from an ore or concentrate containing said metal values from an originating site such as an elevated site to a delivery site...
|
|
|
5707421 |
Process for the inhibition of leaching of lead from brass alloy plumbing fixtures
The invention relates to a process for the inhibition and leaching of lead from brass alloy plumbing fixtures including the step of contacting the brass alloy plumbing fixtures with an aqueous...
|
|
|
5690718 |
Battery paste recycling process
A method of recovering fine lead-containing particles (battery paste) from expended lead-acid batteries in a form which can be used as battery paste in the manufacturing of new batteries without...
|
|
|
5668219 |
Cationic block polymer agglomeration agents for mineral bearing ores
A process for the percolation leaching of minerals from a mineral-beating ore comprises agglomerating the mineral-bearing ore with an agglomerating agent of a cationic block copolymer having a...
|
|
|
5647876 |
Method of removing volatile metals from slag using an acid wash
A method is disclosed for recovering condensed solidified volatile metals from the slag that exits the reactor section of a partial oxidation reactor. In a partial oxidation reactor, condensed...
|
|
|
5628817 |
Method for leaching nickel-copper matte employing substantially neutral leaching solutions
The invention relates to a process for leaching nickel and copper from nickel-copper matte formed in pyrometallurgical nickel production by means of a multi-stage process. It is essential of the...
|