| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 10/03/1995 | US5454856 Precipitation as sulfide or hydroxide, flocculation, gravitional or magnetic separation, and filtration |
| 09/27/1995 | EP0652979A4 Inorganic perbromide compositions and methods of use thereof. |
| 09/27/1995 | CN1109109A Process for the electrochemical dissolution of sulfur-containing and/or concentrated minerals by ion-exchange membranes and potential differences |
| 09/27/1995 | CN1109104A Manufacture of lithium hydroxide from lithionite and lime stone by sintering |
| 09/27/1995 | CN1109103A Impregnation process for separation of cerium oxide and mixed low-cerium rare earth elements |
| 09/26/1995 | US5453253 Reacting with concentrate of zinc sulfide in dilute sulfuric acid; suspending, flashing, separation, leaching, and electrolysis |
| 09/26/1995 | US5453111 Method for separation of metals from waste stream |
| 09/26/1995 | CA1337098C Process for recovering rhodium |
| 09/20/1995 | EP0364463B1 Separation and recovery of nickel and cobalt in ammoniacal systems |
| 09/20/1995 | CN1108700A Preparation method for crystal carbonated rare earth |
| 09/20/1995 | CN1029792C Technology for extracting gold by using emulsion film method and recovering sodium cyanide |
| 09/19/1995 | CA2044167C Polymer bead containing immobilized metal extractant |
| 09/19/1995 | CA1337019C Biorecovery of selenium |
| 09/14/1995 | WO1995024510A1 Leaching of titaniferous materials |
| 09/14/1995 | CA2185000A1 Leaching of titaniferous materials |
| 09/13/1995 | EP0671477A1 Process for treating metallurgical by-products |
| 09/13/1995 | EP0670840A1 Bis-crown calix 4]arenes, method for preparing same and use thereof for selectively recovering cesium and actinides. |
| 09/13/1995 | CN1108309A Neutral phosphorus type extracting agent for separating yttrium |
| 09/13/1995 | CN1029746C One step electrolysis method for extracting copper |
| 09/12/1995 | US5449397 Biocatalyzed leaching of precious metal values |
| 09/12/1995 | US5449396 Method for recovering gold and silver from ore starting materials |
| 09/06/1995 | CN1029691C Technology for processing zinc oxide from zinc-contg. flue dust |
| 09/05/1995 | US5447552 Process for the extraction and separation of nickel and/or cobalt |
| 08/30/1995 | CN1107524A Apparatus for solving zinc by using of electrolyte of acid containing liquid |
| 08/30/1995 | CN1029630C Process for centrifugal extraction of rare-earth ore mother liquor with naphthenic acid |
| 08/29/1995 | CA1336800C Solvent extraction process |
| 08/29/1995 | CA1336799C Hydrometallurgic process for the treatment of an indium chloride solution |
| 08/24/1995 | WO1995022418A1 Process for the treatment of contaminated land |
| 08/24/1995 | WO1995022375A1 Process for the treatment of contaminated material |
| 08/24/1995 | WO1995022374A1 Process for the treatment of contaminated material |
| 08/24/1995 | CA2183585A1 Process for the treatment of contaminated material |
| 08/24/1995 | CA2183584A1 Process for the treatment of contaminated land |
| 08/24/1995 | CA2183583A1 Process for the treatment of contaminated material |
| 08/23/1995 | CN1029567C Reduction and extraction method for gold prodn. by using matter containing amidoxime |
| 08/22/1995 | US5443731 Process for extracting technetium from alkaline solutions |
| 08/22/1995 | US5443621 Improved leaching |
| 08/22/1995 | US5443619 Process for extracting metals from solution |
| 08/22/1995 | CA1336748C Reactive resins useful for precious metal recovery |
| 08/15/1995 | US5441712 Contacting a brine with a water-insoluble anionic or cationic organic solvent selective for the extraction of zinc, stripping solvent with a solution of nitric acid to form zinc nitrate that is thermally hydrolyzied to zinc oxide |
| 08/15/1995 | US5441641 Process for removing manganese from solutions including aqueous industrial waste |
| 08/10/1995 | WO1995021132A1 Method for recovering metals from solutions |
| 08/09/1995 | EP0665900A1 Production of metallic cobalt powder. |
| 08/09/1995 | CN1106473A Membrane powersupplyless electrolysis process |
| 08/09/1995 | CN1106326A Process for making finely divided, dense packing, spherical shaped silver particles |
| 08/08/1995 | US5439503 Mixing iron bearing ore with flux and copper, heating at high temperature to form a molten slag and molten mass containing copper, silver, gold and iron metals, settling in two layers discarding slag and leaching molten mass, electrolysis |
| 08/01/1995 | US5437849 Method of processing vanadium-containing residues |
| 08/01/1995 | US5437848 Recovery of metal values from process residues |
| 08/01/1995 | CA2052878C Method for recovering silver from refractory manganese ores |
| 07/26/1995 | EP0607123B1 Method for the solvent extraction of palladium from aqueous solutions |
| 07/25/1995 | CA1336361C Process for preparing metal particles |
| 07/20/1995 | DE4400796A1 Recovery of precious metals from non-oxidised (semi-) refractory ores |
| 07/19/1995 | CN1105392A Method for extracting metallic element from soot or slag |
| 07/18/1995 | US5433931 Recovery of cerium |
| 07/18/1995 | US5433855 Solvent extraction |
| 07/12/1995 | EP0662344A1 Extraction of metal ions from an aqueous solution |
| 07/12/1995 | EP0662158A1 Zirconium extraction |
| 07/12/1995 | CN2203294Y Adsorption apparatus for recovery of gold from gold-contg. cyanide waste water |
| 07/11/1995 | US5431892 Process for recovering valuable metal from waste catalyst |
| 07/11/1995 | US5431788 Chloride assisted hydrometallurgical copper extraction |
| 07/11/1995 | US5431717 Method for rendering refractory sulfide ores more susceptible to biooxidation |
| 07/11/1995 | US5431713 Sulfates and chlorides, leaching, precipitation |
| 07/11/1995 | US5431483 Submarine solution mining containment and regulation cover and method |
| 07/05/1995 | EP0660949A1 Treatment of photographic effluent |
| 07/05/1995 | EP0660881A1 Recovery of nickel |
| 07/04/1995 | US5429661 Method of recovering lead from recycable lead-containing raw material |
| 07/04/1995 | US5429660 Adsorption of complex gold anions onto a solid ion exchange adsorbent followed by desorption of gold anions |
| 07/04/1995 | US5429659 Thiobacillus bacteria for recovering metals from sulfides material |
| 06/29/1995 | WO1995017409A1 Diphosphine dioxides for removing actinides and phosphonium disalts for preparing same |
| 06/28/1995 | EP0659893A1 Process for extracting and concentrating of cadmium from concentrated sulfuric effluents with a low or medium content of cadmium |
| 06/28/1995 | EP0568670A4 Regeneration of hydrochloric acid. |
| 06/28/1995 | CN1104259A Method for extracting copper from gold concentrate containing high content of copper |
| 06/28/1995 | CN1104258A Calcium-less granulating roasting chrominm salt production technology |
| 06/27/1995 | US5427749 Treating ore with carbonaceous reducing agent yields rutile, titanium-bearing impurities and metallic iron which is then dissolved with sulfuric acid for removal |
| 06/27/1995 | US5427606 Stripping cyano-base metal complexes leaving adsorbed cyano-noble metal complexes |
| 06/27/1995 | US5427605 Filtration of solvent extraction solution to remove suspended solid impurities |
| 06/22/1995 | WO1995016636A1 Recovery of spent catalyst |
| 06/21/1995 | EP0658217A1 Process for the removal of salts from aluminum dross |
| 06/21/1995 | EP0658215A1 Extraction or recovery of metal values |
| 06/21/1995 | EP0658214A1 Upgrading titaniferous materials |
| 06/21/1995 | CN1103894A Method for separating americium (copper) from rare earth elements of fission products |
| 06/15/1995 | WO1995015918A1 Method for recovering sulphur from ores |
| 06/14/1995 | CN1103670A Method for purifying noble metal with double function extracting agent containing nitrogen and phosphorus |
| 06/14/1995 | CN1103669A Method of rocoverying gold silver and orpiment from refractory gold ore containing arsenic |
| 06/14/1995 | CN1103668A Method of extracting cerium-rich solution |
| 06/14/1995 | CN1028881C Coal-oil coalescence agglomerative gold and its intergrowth method |
| 06/13/1995 | US5424050 Recovering gallium compounds from aqueous sodium aluminate solutions by using treated polystyrene resin which has been impregnated with 7-alkyl(or alkenyl)-8-hydroxyquinoline, then elution |
| 06/08/1995 | WO1995015566A1 Process for the treatment of particulate material |
| 06/08/1995 | WO1995015403A1 Biooxidation of refractory sulfide ores |
| 06/08/1995 | WO1995015329A1 Amides of acids of phosphorus for the extraction of metals |
| 06/08/1995 | CA2177064A1 Amides of acids of phosphorus for the extraction of metals |
| 06/07/1995 | CN1103382A Method for producing aluminium polychloride and aluminium iron polychloride with coal-measure high-Fe-Ti kaolinite |
| 06/07/1995 | CN1028769C Method for production of cerium oxide |
| 06/06/1995 | US5422268 Using Baceria |
| 06/06/1995 | US5422084 Process for dissolving plutonium dioxide by means of OH- radicals produced by the radiolysis of water usable for the treatment of dissolving fines and plutoniferous waste |
| 06/06/1995 | CA1335756C Process for the recovery of germanium from solutions that contain it |
| 05/31/1995 | EP0655510A1 Apparatus for dissolving zinc using acidic liquid electrolytes |
| 05/31/1995 | CN1103111A Making rare-earth material liquid from bastnae site |
| 05/31/1995 | CN1103006A Emulsion liquid film additives for reducing swelling and increasing stability |
| 05/26/1995 | WO1995013985A1 Metal and fluorine values recovery from mineral ore treatment |
| 05/26/1995 | CA2175912A1 Metal and fluorine values recovery from mineral ore treatment |