| Patents for C22B 30 - Obtaining antimony, arsenic or bismuth (1,043) |
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| 01/13/1981 | US4244735 Chloride leach process for recovering metal values in the presence of arsenic |
| 01/13/1981 | US4244734 Hydrometallurgy or pyrometallurgy |
| 12/23/1980 | US4241039 Oxidation, precipitation of ferric hydroxide |
| 12/23/1980 | US4240826 Process for the recovery of arsenic as a zinc arsenate and its _utilization in the purification of zinc plant electrolytes |
| 11/18/1980 | CA1089651A1 Method for the concentration of alkaline bismuthide in a material also containing molten lead |
| 10/21/1980 | CA1087861A1 Recovery of valuable metals and compounds thereof contained in molten slag |
| 09/02/1980 | US4220627 Process for the treatment of raw materials containing arsenic and metal |
| 08/19/1980 | US4218431 Removal of sulfide contaminants from carbonate waters with production of CO2 -free H2 S |
| 08/19/1980 | US4218425 Leaching with arsenic acid lixiviant |
| 07/15/1980 | CA1081469A1 Sodium sulfide leach process |
| 07/01/1980 | US4210441 Method for the continuous or discontinuous treatment of molten slag, particularly with contents of heavy metal oxides, for the recovery of portions contained therein of valuable metals or their combinations, respectively |
| 06/24/1980 | CA1079979A1 Debismuthising lead |
| 04/15/1980 | CA1075472A1 Process for the recovery of antimony values from ores containing sulfo-antimony compounds of copper, and arsenic |
| 03/25/1980 | US4194904 From lead-antimony alloy by oxidation to mixed oxides, partial reduction to metallic lead, and fuming of antimony oxide |
| 02/19/1980 | CA1071838A1 Recovery of antimony sulfides from solutions containing arsenic sulfides |
| 02/05/1980 | CA1071136A1 Method for the electrolytic recovery of sb, as, hg and/or sn |
| 01/29/1980 | CA1070865A1 Removal of antimony from industrial streams |
| 01/29/1980 | CA1070504A1 Method for removing arsenic from copper electrolytic solutions or the like |
| 01/08/1980 | CA1069316A1 Treatment of ores or metallurgical by-products containing arsenic and antimony |
| 11/13/1979 | US4174372 Combustion in fluidized bed with fuel gas and oxygen supplied to the bed through separate openings |
| 10/23/1979 | CA1064711A1 Extraction method for non-ferrous metals |
| 07/03/1979 | US4159904 Process for extracting bismuth from a bismuth-bearing material |
| 07/03/1979 | CA1057510A1 Process for treating sulfidic complex and mixed ores, concentrates and technical precipitates |
| 06/12/1979 | US4157946 Process for selective removal of bismuth and antimony from an electrolyte, especially in electrolytic refining of copper |
| 07/25/1978 | US4102976 Leaching with acid, adding arsenic and/or phosphorus |
| 06/20/1978 | US4096232 Extraction of antimony from antimony sulfides bearing solids |
| 03/14/1978 | US4078917 Extraction of antimony trioxide from antimony sulfide ore |
| 10/04/1977 | US4052200 Process for debismuthizing lead |
| 09/27/1977 | US4051220 Sodium sulfide leach process |
| 09/06/1977 | US4046688 Using strong acid andor base ion exchange resin |
| 08/16/1977 | US4042228 Apparatus for debismuthising lead |
| 08/02/1977 | US4039323 Process for the recovery of bismuth |
| 08/02/1977 | US4039322 Method for the concentration of alkaline bismuthide in a material also containing molten lead |
| 06/14/1977 | US4029741 Recovery of antimony sulfides |
| 04/12/1977 | US4017369 Or snantimony, arsenic, mercury, tin |
| 10/19/1976 | US3986943 Ferric chloride, antimony chloride, reduction, electrolysis, oxidation |
| 10/05/1976 | US3984235 Treatment of converter slag |
| 08/24/1976 | US3976743 Treatment of zinc plant residue |
| 07/13/1976 | US3969202 Process for the recovery of antimony values from ores containing sulfo-antimony compounds of copper, and arsenic |
| 06/29/1976 | US3966461 Selective removal of bismuth from oxidized particulate materials |
| 05/25/1976 | US3958985 Inorganic acids, heat treatment |
| 03/16/1976 | US3944653 Process for preparing high purity antimony trichloride and antimony oxide from stibnite ores |
| 01/20/1976 | US3933342 Ore processing furnace |