process leaching patents - search results

CNA Leaching process Google Patents A process of leaching a metal value, such as nickel, from a metal laden solid, such as ore The process includes the steps o process leaching patents - search results

process leaching patents - search results

  • CNA Leaching process Google Patents

    A process of leaching a metal value, such as nickel, from a metal laden solid, such as ore The process includes the steps of contacting the metal laden solid with a leach solution comprising an organic bioacid to provide a metal value containing leachate At least the major proportion of the organic bioacid in the leach solution is malic acidThe invention relates to modifications of a nonammoniacal thiosulfate process of leaching precious metals (eg gold or silver) from precious metalcontaining ores The process involves leaching the ore with an aqueous lixiviant containing a soluble thiosulfate other than ammonium thiosulfate, a copper compound and an organic compound that serves as a copper ligand (ie a ligandformingWOA1 Process of leaching Google PatentsWOA1 Process for leaching metal sulfides with reagents having thiocarbonyl functional groups Google Patents Process for leaching metal sulfides with reagents having thiocarbonyl functional groups Download PDF Info Publication number WOA1 WOA1 PCT/CA2017/ CAW WOA1 WO A1 WO A1WOA1 Process for leaching Google Patents

  • Leaching process Patent USA1 PubChem

    Leaching process Patent USA1 PubChem National Center for Biotechnology Information 8600 Rockville Pike, Bethesda, MD, 20894 USA Contact Policies FOIA National Library of Medicine National Institutes of Health Department of Health and Human ServicesUSA Process of leaching copper ores Google Patents Process of leaching copper ores Download PDF Info Publication number USA USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US UnitedUSA Process of leaching copper ores Google PatentsA process of leaching gold comprising the steps of: a) leaching copper from copper sulfide ore material that contains gold or contains silicate ore containing gold until the copper grade is reduced to 79 wt % or less; b) mixing the resulting material having a copper grade of 79 wt % or less with a gold leaching solution selected from the group consisting of a first solution containingUSB2 Process of leaching gold Google Patents

  • Leaching process Patent USA1 PubChem

    Leaching process Patent USA1 PubChem National Center for Biotechnology Information 8600 Rockville Pike, Bethesda, MD, 20894 USA Contact Policies FOIA National Library of Medicine National Institutes of Health Department of Health and Human Services21/10/2004· Leaching process for the recovery of a valuable metal from an ore Patent PEA1 PubChem National Center for Biotechnology Information 8600 Rockville Pike, Bethesda, MD, 20894 USA Contact Policies FOIA National Library of Medicine National Institutes of HealthLeaching process for the recovery of a valuable metal fromThe process includes atmospheric oxidative leaching of a feed slurry including the arsenical copper sulfide concentrate and an acidic iron sulfatecontaining leach solution, in the presence of oxygen, to produce a leach slurry including copper and arsenic dissolved into the leach solution After dissolving the copper and arsenic, scoroditecontaining seed is introduced to the leach slurry toLeaching, Washing, Or Dissolving Patents and Patent

  • process leaching patents aero2nl

    process for leaching particulate solid materials patent A novel leaching process for separating extractable material from a particulate solid material that comprises extractable and nonextractable portions includes the steps of introducing the particulate solid material and a liquid solvent to an extraction zone; agitating the liquid solvent to a degree sufficient to suspend theA process is described for leaching mineral values from underground formation in situ, applicable particularly to uranium An aqueous solution of a leaching agent (alkaline or acid) is delivered into the formation, where it remains for a prolonged period, and then it is pumped out with dissolved mineral values Some minerals occur naturally in a relatively insoluble form, and can be leachedUranium leeching process and insitu mining (PatentThe direct leaching process also avoids the environmentally undesirable roasting processes which generate sulfur oxides and release arsenic The process of this invention may be applied to ores or concentrates of cobaltite or cobalt arsenic sulfides It is readily operated at substantially atmospheric pressures, thereby enabling the use of conventional materials of construction and avoidingCobalt leaching process TAYLOR; PATRICK R

  • Chlorine leach process FALCONBRIDGE NICKEL MINES LIMITED

    According to the process of this patent, a chloride solution containing both nickel and copper is generated by leaching of matte with cupric chloride, the solution is diluted with water, and is then treated with a nickelcopper matte to precipitate dissolved copper It is clear from the specification that the copper is precipitated as metal by metallic nickel in the matte, the presence ofEuropean Patent Office EPO Search worldwide, lifesciences literature Search Advanced Search Eg "breast cancer" HER2 Smith J Recent Activity Export List Clipboard Export PROCESS FOR LEACHING PARTICULATE SOLID MATERIALS (PAT WO) SIMPSON Brian L EASTMAN KODAK COMPANY Patent: Publof the IntAppl with Intsearch report World Intellectual PropertyPROCESS FOR LEACHING PARTICULATE SOLID MATERIALS Patent02/02/2006· EPA1 chemical patent summaryHybrid process using ion exchange resins in the selective

  • Patents Assigned to Barrick Gold Corporation Justia

    29/01/2020· Date of Patent: April 16, 2019 Assignee: Barrick Gold Corporation Inventor: Barun Gorain Method for pretreatment of goldbearing oxide ores Patent number: Abstract: The disclosure relates to pretreatment of precious metalbearing oxide ores, prior to precious metal leaching by thiosulfate The process comprises mixing oxide oreprocess for leaching particulate solid materials patent A novel leaching process for separating extractable material from a particulate solid material that comprises extractable and nonextractable portions includes the steps of introducing the particulate solid material and a liquid solvent to an extraction zone; agitating the liquid solvent to a degree sufficient to suspend theprocess leaching patents aero2nlprocess leaching patents This application pertains to methods of recovering metals from metal sulfides that involve contacting the metal sulfide with an acidic sulfate solution containing ferric sulfate and a reagent that has a thiocarbonyl functional group, wherein the concentration of reagent in the acidic sulfate solution is sufficient to increase the rate of metal ion extraction relativeprocess leaching patents kanikacz

  • PROCESS FOR LEACHING PARTICULATE SOLID MATERIALS Patent

    Patent: Publ of Application with search report European Patent Office Application: A novel leaching process for separating extractable material from a particulate solid material that comprises extractable and nonextractable portions includes the steps of introducing the particulate solid material and a liquid solvent to an extraction zone; agitating the liquid solvent to a degreeEuropean Patent Office EPO Search worldwide, lifesciences literature Search Advanced Search Eg "breast cancer" HER2 Smith J Recent Activity Export List Clipboard Export PROCESS FOR LEACHING PARTICULATE SOLID MATERIALS (PAT WO) SIMPSON Brian L EASTMAN KODAK COMPANY Patent: Publof the IntAppl with Intsearch report World Intellectual PropertyPROCESS FOR LEACHING PARTICULATE SOLID MATERIALS PatentThe direct leaching process also avoids the environmentally undesirable roasting processes which generate sulfur oxides and release arsenic The process of this invention may be applied to ores or concentrates of cobaltite or cobalt arsenic sulfides It is readily operated at substantially atmospheric pressures, thereby enabling the use of conventional materials of construction and avoidingCobalt leaching process TAYLOR; PATRICK R

  • Process for leaching particulate solid materials Patent

    European Patent Office EPO Search worldwide, lifesciences literature Search Advanced Search Eg "breast cancer" HER2 Smith J Recent Activity Export List Clipboard Export Process for leaching particulate solid materials (PAT US) SIMPSON BRIAN L EASTMAN KODAK CO Patent: United STATES Patent United States Application: US on Publication:According to the process of this patent, a chloride solution containing both nickel and copper is generated by leaching of matte with cupric chloride, the solution is diluted with water, and is then treated with a nickelcopper matte to precipitate dissolved copper It is clear from the specification that the copper is precipitated as metal by metallic nickel in the matte, the presence ofChlorine leach process FALCONBRIDGE NICKEL MINES LIMITED10/05/2015· Global engineering company has filed a patent for its new leaching technology for mine operators Named Oxidative Leach, the hydrometallurgy process is said to increase copper output by 3% The technology is claimed to allow mine operators to generate additional revenues for an average copper mine with primary sulphide ore Designed to operate at atmospheric files patent for new copper leaching technology

  • HYDROMETALLURGICAL PROCESS USING RESINNEUTRALIZED

    05/03/2009· Patent Abstract The present invention refers to a hydrometallurgical process using resininneutralizedsolution in heap leaching effluent More specifically, the process is applicable to lateritic ore, nickel oxidate, cobalt oxidate or a mixture containing metals of interest—nickel, cobalt and other secondary metals, wherein ore is leached by adding an acid or a base with possible pH29/01/2020· Date of Patent: April 16, 2019 Assignee: Barrick Gold Corporation Inventor: Barun Gorain Method for pretreatment of goldbearing oxide ores Patent number: Abstract: The disclosure relates to pretreatment of precious metalbearing oxide ores, prior to precious metal leaching by thiosulfate The process comprises mixing oxide orePatents Assigned to Barrick Gold Corporation Justia