| Patents for C25C 1 - Electrolytic production, recovery or refining of metals by electrolysis of solutions (5,617) |
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| 03/07/1990 | CN2054040U Diaphragm electric tank for forming and purifying ag electrolyte |
| 02/27/1990 | US4904358 Using electrolyzed sodium bromide solution to oxidize and solubilize base metal sulfides and to complex gold/silver/sodium bromide; precipitation |
| 02/08/1990 | WO1990001077A1 Electrolytic precipitation process for recovery of metals |
| 02/07/1990 | CN1006722B Gold recovery process |
| 02/06/1990 | CA1265470A1 Manufacture of self supporting members of copper containing phosphorus |
| 01/31/1990 | CN1039270A Method and equipment for electrolyzing metal mn and mno2 in same electrolyzer |
| 01/30/1990 | US4897170 High melting novolak resin |
| 01/30/1990 | US4897166 Surfactant and a perfluoroalkyl-containing ester of phosphoric acid |
| 01/30/1990 | CA1265095A2 Electrolytic cell for recovery of metals from metal bearing materials |
| 01/30/1990 | CA1265092A1 Procedure for copper chloride aqueous electrolysis |
| 01/25/1990 | WO1990000636A1 Device for recovering silver contained in a solution |
| 01/23/1990 | US4895626 Ammonium solution |
| 01/02/1990 | US4891105 Method and apparatus for electrolytic refining of copper and production of copper wires for electrical purposes |
| 12/27/1989 | CN1038315A Process for recovering lead from exhausted accumulator |
| 12/27/1989 | CN1006235B Method of extracting gallium form dissociation mother liquor form the prodn. of alumina |
| 12/13/1989 | EP0345864A1 Process for making a membrane |
| 12/13/1989 | EP0197071B1 Production of zinc from ores and concentrates |
| 12/13/1989 | EP0172847B1 Metal recovery process |
| 11/28/1989 | CA1263441A1 Determination of electrochemically active components in a process stream |
| 11/23/1989 | EP0342969A1 Disposable cell for recovering conductive metal and method of use |
| 11/08/1989 | CN2047266U Equipment for copper or silver electrolytic-recovering from dilute solution |
| 11/08/1989 | CN1036933A Salt mixture for preparation of magnesium and chlorine |
| 11/07/1989 | US4879010 Recovery of mercury from mercury compounds via electrolytic methods |
| 11/01/1989 | CN1036805A Direct electrolytic refining of copper scrap by stainless steel anode frame |
| 10/25/1989 | EP0338356A1 Time-current and time-potential measurements for controlling and regulating galvanic copper deposition |
| 09/26/1989 | CA1260429A1 Electrochemical production of zinc in membrane cell using chloride and copper ions |
| 09/05/1989 | CA1258978A1 Method for separation and leaching of the valuable metals in metal sulphide materials |
| 08/23/1989 | EP0329275A1 Method of recovering silver from photographic processing solution and apparatus therefor |
| 08/22/1989 | US4859295 Cathodic reduction of mercury/i/ chloride |
| 08/22/1989 | US4859293 Making gold iodide solution in electrolytic cell; basification, reduction, precipitation |
| 08/22/1989 | CA1258654A1 Method for the removal of monovalent ions from znso.sub.4 electrolyte by electrodialysis |
| 08/15/1989 | US4857159 Electrodeposition recovery method for metals in polymer chelates |
| 07/11/1989 | CA1257221A1 Process and installation for percolation electrolysis through one or a plurality of porous volumic electrodes |
| 07/05/1989 | CN1004710B Method and apparatus for stripping the metal layer electro-deposited on cat hod plate |
| 07/04/1989 | CA1256819A1 Process for reconditioning a used ammoniacal copper etching solution containing copper solute |
| 06/20/1989 | US4840717 Silver recovery cell |
| 06/14/1989 | EP0319552A1 Drum electrolysis |
| 05/31/1989 | CN1004363B Concurrent production of electrolytic metallic manganese and fibred electrolytic manganese dioxide |
| 05/30/1989 | US4834951 Common separation of contaminating elements from electrolyte solutions of valuable metals |
| 05/30/1989 | US4834851 Permanent anode |
| 05/30/1989 | US4834850 Efficient electrolytic precious metal recovery system |
| 05/30/1989 | US4834849 Metal recovery method and apparatus |
| 05/16/1989 | US4830903 Metal in a matrix |
| 05/16/1989 | CA1254170A1 Electrolytic oxidation process, and electrolysis installation for said process |
| 05/09/1989 | US4828661 Process for recovery of metals from metal/plastic waste |
| 04/26/1989 | EP0313153A1 Hydrometallurgical process for recovering in pure metal form all the lead contained in the active mass of exhausted batteries |
| 04/05/1989 | EP0310563A1 Process for the electrochemical separation of metal mixtures and alloys |
| 04/04/1989 | US4817919 Device for casting, particularly converter for casting and/or post-treating molten metal |
| 03/29/1989 | EP0309389A2 Electrolytic precious metal recovery system |
| 03/29/1989 | EP0308415A1 Process and apparatus for the electro-deposition of copper or other metals on bipolar electrodes made of lead |
| 03/22/1989 | CN1031867A Technology for extracting of gold from silver anode slime |
| 03/09/1989 | DE3731510C1 Anode and cell for electrolytic production of non-ferrous metals |
| 03/01/1989 | CN1031398A Method for producing lithium-containing alumina |
| 02/21/1989 | US4806656 Preparation of N-thienyl-chloroacetamides and tetrahydro-thien-3-ylidenimines |
| 02/15/1989 | EP0302891A1 Method and plant for electrolysis by seeping through one or a plurality of porous voluminal electrodes. |
| 02/15/1989 | CN1031117A Electrolytic purification technology of crude bismuth |
| 02/14/1989 | US4804443 Method and apparatus for the determination of electrochemically active components in a process stream |
| 02/08/1989 | EP0302345A2 Process for jointly removing undesirable elements from valuable metals containing electrolytic solutions |
| 02/08/1989 | CN1030944A Process and apparatus for refining gold |
| 02/07/1989 | US4802961 Automatic electrolytic unit; efficient withdrawal from solution |
| 01/24/1989 | US4800005 Treatment plant for recovery of metal from hazardous waste |
| 01/18/1989 | EP0299307A2 Foam retarding addition for acid liquids |
| 01/18/1989 | CN1030450A Process for producing high purity sn from raw soldering tin |
| 01/04/1989 | EP0297998A1 Process for extracting and purifying gallium from Bayer liquors |
| 01/03/1989 | US4795538 Electrochemical process for recovering metallic rhodium from aqueous solutions of spent catalysts |
| 12/28/1988 | CN88103116A Drum electrolysis |
| 12/28/1988 | CA1247553A Purifying mixed-cation electrolyte |
| 12/27/1988 | US4793902 Method for electrolyzing zinc and apparatus therefor |
| 12/21/1988 | CN88103282A Method for extractting and purifying gallium from bayer-liquid |
| 12/20/1988 | CA1247039A1 Method for removing arsenic from a sulphuric-acid solution |
| 12/15/1988 | DE3819020A1 Method for adjusting the amount of zinc powder when removing impurities from zinc sulphate solutions |
| 12/13/1988 | CA1246489A1 Electrowinning copper in hydrometallurgical process including a membrane cell |
| 12/06/1988 | US4789446 Method of processing residues from the hydrometallurgical production of zinc |
| 12/06/1988 | US4789445 Method for the electrodeposition of metals |
| 12/06/1988 | US4789444 Extracting iron with organic solvent diluted with petroleum |
| 12/01/1988 | WO1988009400A1 Controlling processes for the electrolytic recovery of metals |
| 12/01/1988 | WO1988009399A1 Drum electrolysis |
| 11/22/1988 | US4786386 Softening |
| 11/22/1988 | US4786375 Anodes or plates, electrodeposition |
| 11/22/1988 | CA1245057A1 Gold recovery process |
| 11/10/1988 | DE3811472A1 Verfahren zur aufarbeitung von metallchloridloesungen Process for working up metal chloride solutions |
| 10/26/1988 | EP0288344A1 Electrochemical process for recovery of metallic rhodium from used catalysts' aqueous solutions |
| 10/19/1988 | EP0286753A2 A method and apparatus for the determination of electrochemically active components in a process stream |
| 10/19/1988 | CN87102008A Method of extracting manganese dioxide and zinc from waste zinc manganese dry batteries |
| 10/05/1988 | CN87216699U Fast silver recovering apparatus |
| 10/04/1988 | US4775452 Process for dissolution and recovery of noble metals |
| 09/28/1988 | EP0283785A1 Process for recovering mercury by electrolysis |
| 09/27/1988 | US4773978 Apparatus for the production of metals by electrolysis |
| 09/21/1988 | EP0283179A1 Electrolyte for lithium-sulfur dioxide electrochemical cell |
| 09/07/1988 | EP0281531A1 Method for electrolyzing zinc and apparatus therefor |
| 09/06/1988 | US4769116 Hydrometallurgical process for an overall recovery of the components of exhausted lead-acid batteries |
| 08/23/1988 | CA1240954A1 Electrode for electrometallurgical processes |
| 08/09/1988 | US4762598 Silver from waste photographic solutions |
| 08/09/1988 | US4762597 Recovering gold, rotor cathode, anode housing |
| 08/03/1988 | CN87105905A Prepn. of mn by electrolyzing mn-bearing waste water of p-dihydroxy-benzene |
| 07/26/1988 | CA1239613A1 Recovery of tin from starting material and low tin concentrates by melting with potassium hydroxide |
| 06/30/1988 | DE3738996A1 Method and appliance for the deposition of copper from ammoniacal copper chloride solutions |
| 06/21/1988 | US4752541 Electrolyte for lithium-sulfur dioxide electrochemical cell |
| 06/21/1988 | US4752364 Method for treating organic waste material and a catalyst/cocatalyst composition useful therefor |
| 06/07/1988 | US4749462 Oxidation of cerium salts |