| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 05/24/1995 | EP0654547A1 Electrochemical refining of metals |
| 05/24/1995 | EP0654540A1 Preparation of a TiIII-containing solution and its use |
| 05/24/1995 | CN1028543C Process for separation of yttrum |
| 05/23/1995 | CA2136052A1 Process for the electrochemical dissolution of sulfur-containing and/or concentrated minerals by ion-exchange membranes and potential differences |
| 05/23/1995 | CA1335665C Bioadsorption composition, process for production thereof and process for use thereof |
| 05/18/1995 | DE4404374C1 Recovery and sepn of tantalum and niobium from materials contg. both |
| 05/17/1995 | EP0652979A1 Inorganic perbromide compositions and methods of use thereof |
| 05/11/1995 | DE4338228A1 Cyclic process for reprocessing metal-containing residues |
| 05/10/1995 | EP0652293A1 Process for making finely divided, dense packing, spherical shaped silver particles |
| 05/09/1995 | US5413624 Enhancement of bioleach systems using nutrient additives |
| 05/05/1995 | CA2134586A1 Purification of aqueous solutions |
| 05/03/1995 | EP0651063A1 Improvements in or relating to the recovery of silver |
| 05/03/1995 | EP0651062A1 Process for the preparation of a high-purity cobalt intermediate |
| 05/02/1995 | US5411667 Method of selectively separating lead ions |
| 05/02/1995 | US5411575 Treatment of ores for copper and gold with cyanide |
| 05/02/1995 | US5411574 Titanium extraction |
| 05/02/1995 | US5411573 Recovery of precious metals from acid solutions by N-containing electroactive polymers |
| 04/29/1995 | CA2134585A1 Recovery of silver |
| 04/27/1995 | WO1995011319A1 Gold lixiviation using nitrogen and sulfur heterocyclic aromatic compounds |
| 04/26/1995 | CN1028300C Method for extracting V2O5 by treating vanadium residue |
| 04/25/1995 | US5409678 Separations of actinides, lanthanides and other metals |
| 04/25/1995 | CA1335376C Process for the extraction of metal values and novel biimidazole derivatives as metal extractants |
| 04/25/1995 | CA1335332C Separation and recovery of nickel and cobalt in ammoniacal systems |
| 04/20/1995 | WO1995010636A1 Recovery of palladium catalyst |
| 04/20/1995 | CA2118208A1 Method for selectively removing antimony and bismuth from sulphuric acid solutions |
| 04/19/1995 | EP0648709A1 Method for selectively removing antimony and bismuth from sulphuric acid solutions |
| 04/19/1995 | EP0648192A1 A method of obtaining lead and organolead from contaminated media using metal accumulating plants |
| 04/19/1995 | CN1101680A Process for producing zinc oxide by ammonia immersion method |
| 04/19/1995 | CN1101679A Technology for producing ammonia cupric sulfate |
| 04/19/1995 | CN1101625A Method for preparing titanium dioxide from titanium-riched material |
| 04/13/1995 | DE4334345A1 Process for recovering metals from an acidic metal salt solution |
| 04/12/1995 | EP0647721A2 Agent for treating metal ions in an aqueous solution, process for producing the metal ion-treating agent and method for treating metal ions in an aqueous solution |
| 04/11/1995 | US5405430 Leaching with sodium thiosulfate solution; precipitation |
| 04/05/1995 | EP0646185A1 Production of metals from minerals |
| 04/04/1995 | US5403382 Increasing the copper production by bubbling air to increase the copper sulfate and iron interaction |
| 03/30/1995 | WO1995008651A1 Process for the elution of precious metals adsorbed on active carbon |
| 03/28/1995 | US5401296 Precious metal extraction process |
| 03/28/1995 | CA1334892C Gallium liquid-liquid extraction process using aqueous alkaline solutions and an organic phase |
| 03/28/1995 | CA1334891C Gallium recovery process involving liquid-liquid extraction |
| 03/23/1995 | WO1995008004A1 Ilmenite processing using cold milling |
| 03/23/1995 | CA2169947A1 Ilmenite processing using cold milling |
| 03/22/1995 | CN1027977C Wet-way treating method of high-arsenic-lead anode mud |
| 03/21/1995 | CA2001778C Sorption vessel with interstage screening vessel |
| 03/16/1995 | WO1995007366A1 Upgrading titaniferous materials |
| 03/16/1995 | CA2171185A1 Upgrading titaniferous materials |
| 03/15/1995 | EP0642595A1 Continuous ore reaction process. |
| 03/15/1995 | EP0642394A1 Process for decontamination of metal-polluted earth |
| 03/15/1995 | CN1027855C High-efficiency method for extracting Chinese medical stone |
| 03/14/1995 | US5397380 Recovery of metal values |
| 03/09/1995 | WO1995006757A1 Recovery of aluminum and/or fluoride values from used aluminum chlorofluorides |
| 03/08/1995 | EP0641741A1 Process for the removal of cobalt impurities from zinc sulphate solutions |
| 03/08/1995 | EP0641392A1 Process for the separation of cobalt from nickel. |
| 03/08/1995 | CN1027821C Method for extracting silver on anode mud from tin containing low silver |
| 03/04/1995 | CA2130774A1 Slurry pipeline leaching method |
| 03/02/1995 | WO1995006140A1 Method for removing zinc from sulphured concentrates |
| 03/01/1995 | CN1099424A Method for treating blast furnace slag with diluted chlorhydric acid |
| 02/28/1995 | US5393892 Processes for removing, separating and concentrating lead, thallium, alkali metals, alkaline earth metals from concentrated matrices using macrocyclic polyether cryptand ligands bonded to inorganic supports |
| 02/28/1995 | US5393431 Solvent extraction using a aminobis(thiophosphoryl) compound |
| 02/28/1995 | US5393320 Leaching process for nickel cobalt and manganese ores |
| 02/25/1995 | CA2104736A1 Process for high extraction of zinc from zinc ferrites |
| 02/22/1995 | CN1099072A Method for extracting rare-earth from maceration extract of rare-earth ore |
| 02/22/1995 | CN1099071A Recovery of precious metal values from pefractory ores |
| 02/22/1995 | CN1027702C Technology for recovering and eliminating orpiment from self-containing arsenic gold ore |
| 02/16/1995 | WO1995004835A1 A process for recovering metals |
| 02/16/1995 | CA2168036A1 A process for recovering metals |
| 02/15/1995 | EP0520993B1 Process for removing inorganic gels and incompressible solids from acidic media |
| 02/14/1995 | US5389124 Heating in solvent; cooling to precipitate |
| 02/14/1995 | US5389122 Process for making finely divided, dense packing, spherical shaped silver particles |
| 02/09/1995 | WO1995004164A1 Hydrometallurgical process for the recovery of precious metal values from precious metal ores with thiosulfate lixiviant |
| 02/08/1995 | EP0637635A2 Metal leaching and recovery process |
| 02/08/1995 | CN1098442A Method for extracting white arsenic by basic removing foreign matter |
| 02/07/1995 | US5387276 Method of leaching mineral values from oil sand tailings |
| 02/01/1995 | CN1098142A Hydrometallurgical process for the recovery of precious metal values from precious metal ores with thiosulfate lixiviant |
| 02/01/1995 | CN1027547C Emulsion-removing method in process of extracting rare-earth (Ce) |
| 01/31/1995 | US5385827 Enhanced oil recovery; leaching, dissolving |
| 01/31/1995 | US5385713 Contacting liquor with base to adjust pH, contacting at elevated temperature with aluminum hydroxide or aluminum sulfate |
| 01/31/1995 | US5385668 Apparatus for separating particulate material from a liquid medium |
| 01/25/1995 | CN1097810A Separating method for boric acid and magnesium sulfate mixed solution |
| 01/25/1995 | CN1027500C Method for removal of organic solvents from aqueous process streams |
| 01/24/1995 | US5384105 Radioactive, acid digestion |
| 01/18/1995 | EP0634221A1 Process for the recovery of silver from zinc leaching residues by flotation |
| 01/17/1995 | CA1333960C Hydrometallurgical process for an overall recovery of the components of exhausted lead-acid batteries |
| 01/14/1995 | CA2127839A1 Process for the recovery of silver by flotation from the residue from the wet extraction of zinc |
| 01/12/1995 | WO1995001460A1 Method of extracting fluorine from minerals or mineral species |
| 01/10/1995 | US5380354 Recovery of metals from sulphidic material |
| 01/09/1995 | CA2126899A1 Metal leaching and recovery process |
| 01/03/1995 | US5378437 Processes to recover and reconcentrate gold from its ores |
| 01/03/1995 | US5378262 Process for the extraction and separation of nickel and/or cobalt |
| 12/29/1994 | CA2099333A1 Chloride assisted hydrometallurgical copper extraction |
| 12/28/1994 | EP0630418A1 Recovery of precious metal |
| 12/22/1994 | WO1994029466A1 Phytoremediation of metals |
| 12/22/1994 | CA2163665A1 Phytoremediation of metals |
| 12/21/1994 | EP0629712A1 A process for treating compositions containing noble metals and, optionally, other valuable elements in order to recover said valuables |
| 12/21/1994 | CN1096543A Method and apparatus for preparing sodium pyroantimonate from antimony sulfide ore |
| 12/21/1994 | CN1096497A Method for preparing high-purity zirconium dioxide by direct precipitation |
| 12/13/1994 | US5372794 Process for the separation of certain elements from aqueous solutions resulting from the reprocessing of spent nuclear fuels |
| 12/13/1994 | US5372631 Increasing silver recovery |
| 12/08/1994 | WO1994028184A1 An integrated bioleach/solvent extraction process for zinc metal production from zinc concentrates |
| 12/08/1994 | WO1994027711A1 Multi-stage water treatment system |
| 12/05/1994 | CA2124547A1 Process for the separation of uranium compound |