| Patents for C22B 47 - Obtaining manganese (857) |
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| 12/18/1984 | US4489043 Manufacture of manganous sulfate solutions |
| 11/20/1984 | US4483827 Hydrometallurgical process for the recovery of valuable metals from sulfidic, silicate-containing raw materials |
| 10/09/1984 | US4475993 Extraction of trace metals from fly ash |
| 03/14/1984 | EP0102892A1 Process for manufacturing high purity metals and alloys |
| 01/10/1984 | CA1160057A1 Process for the recovery of nickel, cobalt and manganese from their oxides and silicates |
| 11/22/1983 | US4416692 Lead as extractant |
| 11/01/1983 | CA1156052A1 Recovery of metal values |
| 10/05/1983 | EP0090390A2 Method of treating manganese ores with sulphur dioxide |
| 09/06/1983 | US4402735 Sodium chloride and calcium carbonate or hydroxide; carbonaceous reductant; nickel, copper, cobalt values |
| 07/27/1983 | EP0028647B1 Manganese nitrate splash/spray decomposition |
| 07/19/1983 | CA1150064A1 Process and apparatus for recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers |
| 04/26/1983 | CA1145164A1 Process for silico-thermal preparation, in ladles, of manganese and silicon alloys |
| 04/05/1983 | US4379037 Removal of manganese and chloride ions from aqueous acidic zinc sulphate solutions |
| 02/15/1983 | CA1141172A1 Removal of manganese ions from zinc and manganese containing solutions |
| 12/14/1982 | US4363657 Process for obtaining manganese- and silicon-based alloys by silico-thermal means in a ladle |
| 12/01/1982 | EP0065608A1 Process for preparing manganese nitrate solution |
| 10/19/1982 | US4354868 Process for the desiliconization of manganese alloys |
| 10/05/1982 | CA1132801A1 Method for removal of silicates from manganese alloys |
| 06/22/1982 | CA1126292A1 Catalyst metal separation from saturated aliphatic monocarboxylic acids |
| 05/25/1982 | US4331520 Process for the recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers |
| 05/18/1982 | CA1123612A1 Selective recovery of nickel, cobalt and manganese from sea nodules with sulfurous acid |
| 05/10/1982 | EP0040243A4 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 03/23/1982 | CA1120272A1 Manganese ore leaching process |
| 03/02/1982 | US4317804 Process for the selective removal of ferric ion from an aqueous solution containing ferric and other metal ions |
| 03/02/1982 | US4317730 Purification of aqueous liquids used in manganese nodule processing |
| 01/19/1982 | US4311520 Process for the recovery of nickel, cobalt and manganese from their oxides and silicates |
| 01/12/1982 | US4310494 Manganese nitrate spray decomposition |
| 01/05/1982 | US4309390 Separation of cobalt and manganese from trimellitic acid process residue by extraction, pH adjustment, and magnet |
| 11/25/1981 | EP0040243A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 11/24/1981 | CA1112880A1 Hydrometallurgical process for the treatment of oxides and ferrites which contain iron and other metals |
| 11/10/1981 | CA1112051A1 Metal recovery |
| 11/03/1981 | US4298580 Separation of cobalt and manganese from trimellitic acid process residue by precipitating as carbonates, redissolving as halides and removing cobalt by magnetic means |
| 10/21/1981 | EP0037863A1 Process for making manganous sulphate solution |
| 10/13/1981 | CA1110456A1 Process for recovering nickel, cobalt and manganese from their oxide and silicate ores |
| 09/22/1981 | US4290866 Removal of manganese ions from zinc and manganese containing solutions |
| 09/01/1981 | CA1107974A1 Process for the simultaneous extraction of all metal values other than copper from manganese nodules |
| 07/29/1981 | EP0032492A1 Silico-thermal process for obtaining, in ladle, alloys based on manganese and silicium |
| 07/28/1981 | US4280986 Method for separating metal values from sea nodules |
| 07/28/1981 | CA1105711A1 Recovering metal values from marine manganese nodules |
| 07/21/1981 | CA1105267A1 Process for the extraction of metal values from manganese nodules |
| 06/30/1981 | US4276268 Process for preparing manganese nitrate solution |
| 06/23/1981 | US4274866 Flotation and sintering of synthetic manganese carbonate |
| 06/16/1981 | US4273575 Process for transforming fines of iron or manganese into raw-material for sintering |
| 05/19/1981 | CA1101225A1 Cobalt ion exchange process |
| 04/30/1981 | WO1981001159A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers |
| 04/21/1981 | CA1099517A1 Method for the reduction, extraction and separation of metals and/or metal compounds from metal containing raw materials |
| 04/14/1981 | US4261737 Leaching ore with ammoniacal ammonium salt solution, adsorption oncarbon which has been pretreated with acid |
| 04/07/1981 | US4260414 Process for recovering and utilizing useful substances from molten metal produced during reduction treatment of steel slag |
| 04/07/1981 | CA1098718A1 Process for the extraction of metal values from manganese nodules simultaneously |
| 04/07/1981 | CA1098713A1 Selective sulfation process for partitioning ferrous and non-ferrous values in an ore |
| 03/31/1981 | US4259295 Oxalic acid leaching of marine nodules |
| 02/10/1981 | US4250149 Manganese nitrate decomposition |
| 02/05/1981 | WO1981000262A1 Silico-thermal process for obtaining,in ladle,alloys based on manganese and silicium |
| 02/03/1981 | CA1094817A1 Hydrometallurgical recovery of metal values |
| 01/20/1981 | US4246185 Catalyst metal separation from saturated aliphatic monocarboxylic acids |
| 01/20/1981 | CA1093839A1 Hydrometallurgical recovery of metal values |
| 01/20/1981 | CA1093830A1 Recovery of manganese values |
| 12/09/1980 | CA1091038A1 Cobalt stripping process |
| 12/09/1980 | CA1091037A1 Liquid ion exchange process for the recovery of copper and nickel |
| 11/27/1980 | WO1980002555A1 Manganese nitrate splash/spray decomposition |
| 11/04/1980 | US4231993 Recovery of metal values from lead smelter matte |
| 10/14/1980 | US4228091 Removal of nickel from cobalt and manganese |
| 10/07/1980 | US4226836 Method for separating molybdenum values from sea nodules |
| 09/02/1980 | CA1084865A1 Method for recovering manganese metal from ferro- manganese |
| 08/26/1980 | US4219354 Hydrometallurgical process for the treatment of oxides and ferrites which contain iron and other metals |
| 07/09/1980 | EP0013098A1 Removal of manganese ions from zinc and manganese containing solutions |
| 06/17/1980 | US4208379 Recovery of metals from Atlantic sea nodules |
| 06/12/1980 | WO1980001170A1 Disilification process of manganese alloys |
| 05/27/1980 | CA1078191A1 Method of recovery of metal compounds and metals from nitrate solutions |
| 05/20/1980 | CA1077725A1 Process for obtaining metal values by leaching raw sea nodules |
| 04/15/1980 | US4198377 Process for recovering manganese from aqueous acidic sulphate solutions |
| 04/15/1980 | CA1075467A1 Process for extracting metal values from manganese nodules |
| 04/08/1980 | CA1075015A1 Process for working up manganese modules and recovery of the contained valuable constituents |
| 04/01/1980 | CA1074568A1 Process for leaching raw sea nodules |
| 03/11/1980 | CA1073217A1 Recovery of metal values from basic aqueous ammoniacal leach liquor |
| 01/08/1980 | CA1069315A1 Method for preparing manganese chloride and manganese by igneous electrolysis of the manganese chloride obtained |
| 10/23/1979 | CA1064854A1 Method of extracting constituent metal values from pyrometallic nodules from the sea |
| 10/17/1979 | EP0004637A1 Process for the conversion of fine grained iron or manganese ore in a sinterable raw material |
| 09/18/1979 | CA1062514A1 Reduction smelting of manganese nodules with a liquid reductant |
| 09/04/1979 | CA1061571A1 Cuprion process start-up control |
| 09/04/1979 | CA1061570A1 Manganese nodules for oxidation leaching |
| 09/04/1979 | CA1061568A1 Process for extracting metal values from manganiferous ocean floor nodule ore |
| 08/14/1979 | CA1060219A1 Process for leaching raw sea nodules |
| 08/14/1979 | CA1060217A1 Process for separating nickel, cobalt and copper |
| 08/14/1979 | CA1060215A1 Refining of manganese oxide ores |
| 08/07/1979 | CA1059769A1 Extraction of metal values from leached slurries |
| 07/31/1979 | US4162916 Process for the treatment of complex metal ores containing, in particular, manganese and copper, such as oceanic nodules |
| 07/03/1979 | CA1057509A1 Metal powder production by direct reduction in an arc heater |
| 06/26/1979 | CA1057063A1 Recovery of base metals from manganese-containing ores |
| 06/05/1979 | US4157285 Method for preparing manganese chloride and manganese by igneous electrolysis of the manganese chloride obtained |
| 05/15/1979 | CA1054379A1 Halidation of nonferrous metal values in manganese oxide ores |
| 05/15/1979 | CA1054378A1 Reduction of mangenese |
| 05/02/1979 | EP0001680A1 Process for the recovery of manganese from aqueous acidic solutions |
| 04/17/1979 | US4150091 Manganese ore leaching process |
| 04/17/1979 | CA1052584A1 Method of extraction of nickel and copper from the nodules of deep-sea beds |
| 04/03/1979 | CA1051671A1 Process for treating manganese nodules |
| 03/27/1979 | US4146572 Simultaneous extraction of metal values other than copper from manganese nodules |
| 03/13/1979 | US4144056 Process for recovering nickel, cobalt and manganese from their oxide and silicate ores |
| 03/13/1979 | CA1050281A1 Two-stage fluid bed reduction of manganese nodules |
| 02/13/1979 | CA1048278A1 Metal carbonate recycle to reduction circuit in the cuprion process |