| Patents for C22B 30 - Obtaining antimony, arsenic or bismuth (1,043) |
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| 09/22/2004 | CN1530451A Treatment of fragile S-Pb-Sb mineral tail |
| 08/17/2004 | CA2167026C Method of recovering antimony and bismuth from copper electrolyte |
| 07/29/2004 | US20040144155 Compositions and methods for removing pollutants from contaminated water with a fern plant |
| 07/21/2004 | CN1158409C Method of recovering antimony and bismuth from copper electrolyte |
| 07/07/2004 | CN1156589C Dearsenfifying method for Cu-Zn-Co material |
| 06/29/2004 | US6755891 Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 04/29/2004 | WO2004035846A1 The non-pollution process of extracting arsenic in vacuum and the equipment thereof |
| 04/29/2004 | WO2004035844A1 The process for extracting gold in arsenic-containing concerntrate of gold and the equipment thereof |
| 04/28/2004 | CN1492079A Method for recovering stibium and bismuth from copper electrolyte |
| 04/21/2004 | CN1490420A Vacuum arsenic extracting method and system without pollution |
| 04/21/2004 | CN1490418A Method and system for extracting gold from arsenic contained headings |
| 03/17/2004 | CN1482067A Method and apparatus for producing antimony white |
| 02/19/2004 | WO2004015149A1 Method for producing antimony from concentrate |
| 01/20/2004 | CA2277926C Method for separating bi-213 from a solution of radionuclides |
| 01/15/2004 | US20040007536 Process for recovering arsenic from acidic aqueous solution |
| 01/07/2004 | CN2597487Y Device for producing stibium trioxide from lead-antimony alloy |
| 12/24/2003 | CN2594276Y Separated stibium trioxide smelting furnaces |
| 11/12/2003 | CN1455011A Method of removing arsenic and selenium for antimony smelting by pyrometallurgy |
| 11/12/2003 | CN1455010A Antimony fused-extracting refining lead-removing agent |
| 10/30/2003 | WO2003089677A1 Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 10/16/2003 | US20030192404 Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 10/08/2003 | CN1123643C Smelting process of lowering antimony content in slag |
| 09/12/2003 | WO2003074743A2 Process for bismuth recovery from lead-bismuth dross |
| 09/10/2003 | EP1341723A2 Process for recovering arsenic from acidic aqueous solution |
| 08/27/2003 | CN1438338A Smelting production process for regnerated antimony |
| 07/30/2003 | CN1116232C Lead antimony separation process |
| 07/23/2003 | CN1115420C Process and equipment for preparing high-purity antimony oxide by fire method to separate pb-sb alloy |
| 05/28/2003 | CN2552941Y High efficient separating device for extracting main valuable metal from jamesonite |
| 05/27/2003 | CA2255874C Disposal of arsenic from sulfur dioxide-containing solutions |
| 05/21/2003 | CN2551655Y Device for producing stibium trioxide using jamesonite |
| 03/26/2003 | CN1405341A Method for separating lead and antimony from lead antimony crude alloy |
| 03/25/2003 | CA2242010C Method for eluting antimony adsorbed on chelating resin |
| 03/06/2003 | WO2003018852A1 Method for rapid elution of bismuth-213 and uses thereof |
| 03/05/2003 | CN2538780Y Device for producing antimonic trioxide from Pb-Sb alloy |
| 02/04/2003 | US6514457 Extraction of impurities from structures containing mercury, cadmium, zinc, or tellurium, and impurities |
| 01/08/2003 | CN1389584A Efficient separation process and apparatus of main valuable metals in jamesonite |
| 12/17/2002 | US6495024 Method for the removal of arsenic from sulfuric acid solution |
| 12/04/2002 | CN1382815A Process and equipment for preparing antimory oxide from PbSb alloy |
| 10/23/2002 | CN1376211A Stable ferric arsenate precipitation from acid copper solutions whilst minimising copper losses |
| 10/23/2002 | CN1375565A Dearsenifying method for Cu-Zn-Co material |
| 10/10/2002 | WO2002048046A3 Process for recovering arsenic from acidic aqueous solution |
| 09/11/2002 | CN1369019A Method of removal of impurities from gold concentrate containing sulfides |
| 08/14/2002 | CN1363709A Process and equipment for preparing high-purity antimony oxide by fire method to separate Pb-Sb alloy |
| 08/07/2002 | EP1228258A1 Method of removal of impurities from gold concentrate containing sulfides |
| 07/17/2002 | CN2500688Y Device for producing stibium trioxide from jamesonite |
| 06/20/2002 | WO2002048046A2 Process for recovering arsenic from acidic aqueous solution |
| 06/12/2002 | CN1353202A Process for treating metal sulfide ore |
| 04/24/2002 | EP1198305A1 Recovery of heavy metals in waste treatment |
| 03/14/2002 | WO2002021606A1 The method manufacturing p-type bismuth telluride thermoelectric materials for the enhancement of the yield of high quality ingot |
| 03/13/2002 | CN1339612A Process for directly producing super fine antimony trioxide by volatilizing smelting in blast furnace and its special equipment |
| 02/12/2002 | CA2232935C A method for the treatment of bismuth-containing sulphide ores or concentrates of such ores |
| 01/22/2002 | US6340427 Solution purification method for electrolyte |
| 01/10/2002 | WO2002002832A1 Heap leach bio oxidization |
| 11/28/2001 | CN1075561C Method for extracting arsenic from arsenious acid liquid by magnetic field effect |
| 11/14/2001 | EP0815269B1 Improved hydrometallurgical processing of impurity streams generated during the pyrometallurgy of copper |
| 10/16/2001 | US6302942 Methods for removing pollutants from contaminated soil materials with a fern plant |
| 08/28/2001 | US6280500 Methods for removing pollutants from contaminated soil materials with a fern plant |
| 05/23/2001 | CN2431288Y Device for producing stibium trioxide by jamesonite |
| 04/05/2001 | WO2001023628A1 Stable ferric arsenate precipitation from acid copper solutions whilst minimising copper losses |
| 03/28/2001 | EP0862658B1 A method for the treatment of bismuth-containing sulphide ores or concentrates of such ore |
| 02/22/2001 | WO2001012865A1 Method of removal of impurities from gold concentrate containing sulfides |
| 02/22/2001 | CA2381679A1 Method of removal of impurities from gold concentrate containing sulfides |
| 01/31/2001 | CN1061382C Method for treatment of mismuth-containing sulphite ores or concentrates of such ore |
| 01/25/2001 | WO2001005732A1 Removal of antimony compounds from liquids |
| 12/26/2000 | US6165426 Method of purifying liquid products by removing soluble antimony compounds therefrom |
| 12/19/2000 | USRE36990 Chemical process for the recovery of metal from an organic complex |
| 11/28/2000 | US6153081 Method of recovering antimony and bismuth from copper electrolyte |
| 11/09/2000 | WO2000066286A1 Recovery of heavy metals in waste treatment |
| 11/08/2000 | CN2404893Y Antimony furnace ractor for antimony trioxide |
| 10/19/2000 | WO2000061822A1 Compositions and methods for removing pollutants from contaminated materials |
| 10/03/2000 | US6126719 Recovery of group III element component from group III-V waste materials |
| 09/12/2000 | US6117209 Hydrometallurgical process for treating alloys and drosses to recover the metal components |
| 05/02/2000 | CA2138777C Production of metals from minerals |
| 04/19/2000 | CN1051581C Method and equipment for producing stabium trioxide with jamesonite |
| 03/14/2000 | CA2012472C Procedure and apparatus for separating arsenic from waste material |
| 02/16/2000 | CN1244593A Smelting process of lowering antimony content in slag |
| 02/16/2000 | CN1244592A High-arsenic antimony refining process |
| 02/16/2000 | CN1244591A Lead-antimony separation process |
| 02/16/2000 | CN1244590A Direct smelting of antimony ingot from antimony ore and antimony sulfide |
| 02/02/2000 | CN1049014C Removal of arsenic from rich arsenic materials |
| 01/12/2000 | EP0969908A2 Method for separating bi-213 from a solution of radionuclides |
| 12/15/1999 | EP0963451A1 Ferric fluoborate/organic extractant hydrometallurgical process for recovering metals |
| 12/15/1999 | CN1047407C Purifying leading removing method by antimony pyro-refining and its liquid lead removing agent |
| 11/23/1999 | US5989430 Adsorption of antimony cations from electrolyte solution onto anionic polymer ion exchange resin, desorption with acidic solution, neutralization of effluent to precipitate antimony hydroxide for recovery |
| 11/03/1999 | CN1046142C Method for smelting sodium sulfate from refined complex antimony ore |
| 10/05/1999 | US5961940 Method for the treatment of bismuth-containing sulphide ores or concentrates of such ore |
| 09/23/1999 | DE19811763A1 Removing arsenic and optionally antimony from suspensions obtained in drinking water production |
| 09/15/1999 | EP0646185B1 Production of metals from minerals |
| 09/15/1999 | CN2338710Y Tube for imtroducing air flow |
| 09/08/1999 | CN1045011C Deleading, deselenization and dearsenification process for smelting leaded antimony ore |
| 08/11/1999 | CN2332979Y Stibium trioxide smelting furnace |
| 07/29/1999 | WO1999037824A1 Recovery of group iii element component from group iii-v waste materials |
| 07/14/1999 | CN1044138C Lead-removing method with sulfur for antimonylead alloy |
| 06/02/1999 | CN1218114A Method for extracting arsenic from arsenious acid liquid by magnetic field effect |
| 06/01/1999 | US5908489 Process for removing antimony from hydrofluoric acid solutions which contain Ta/Nb |
| 03/24/1999 | CN1042653C Deleading refining process for stibium |
| 03/10/1999 | CN2310076Y Oxidation furnace for producing stibium trioxide by utilizing plumbic stibium and electrolysis anode mud |
| 02/03/1999 | CN1206691A Refinement technology for realgar ore smelting and equipment thereof |
| 12/30/1998 | CN1041441C Process for removing Pb and Zn for raw Bi |
| 12/30/1998 | CN1041439C Lead-antimony directly separating technology for jamesonite |