| Patents for C22B 5 - General processes of reducing to metals (5,378) |
|---|
| 12/13/1977 | US4062675 Ore treatment involving a halo-metallization process |
| 12/06/1977 | US4061492 Method of ore reduction with an arc heater |
| 11/08/1977 | US4057422 Extraction, dehydration, sulfiding, oxidation, precipitation |
| 11/01/1977 | US4056602 High temperature chemical reaction processes utilizing fluid-wall reactors |
| 10/11/1977 | US4053301 Process for the direct production of steel |
| 09/20/1977 | US4049438 Non-ferrous metal recovery from deep sea nodules |
| 09/20/1977 | US4049395 Obtained from multistage combustion of fuel |
| 09/13/1977 | US4047934 Heating, molten salt bath |
| 08/23/1977 | US4044094 Two-stage fluid bed reduction of manganese nodules |
| 08/23/1977 | US4043806 Alloys from manganese nodules |
| 08/16/1977 | US4042379 Condensation of zinc vapor |
| 08/02/1977 | US4039325 Vacuum smelting process for producing ferromolybdenum |
| 08/02/1977 | US4039324 Fluidized hydrogen reduction process for the recovery of copper |
| 08/02/1977 | US4039322 Method for the concentration of alkaline bismuthide in a material also containing molten lead |
| 07/26/1977 | US4038066 Method of stripping base metals from fused salts |
| 07/19/1977 | US4036636 Flash furnace process |
| 07/05/1977 | US4033759 Process for producing magnesium utilizing aluminum metal reductant |
| 07/05/1977 | US4033758 Process for producing magnesium utilizing aluminum-silicon alloy reductant |
| 06/28/1977 | US4032329 Metal reduction process employing metal sub-halides |
| 06/28/1977 | US4032328 Metal reduction process |
| 06/28/1977 | US4032120 Apparatus for direct reduction of sulfur-containing iron ore |
| 06/21/1977 | US4030916 High temperature reaction with carbon powder |
| 06/07/1977 | US4027863 Suspension smelting furnace for finely-divided sulfide and/or oxidic ores or concentrates |
| 05/24/1977 | US4025335 Method for the recovery of useful metallic components |
| 05/17/1977 | US4023963 Processing zones |
| 05/03/1977 | US4021530 Preparation of metal fluorides |
| 05/03/1977 | US4021235 Operating method for slag cleaning furnace in copper refining |
| 04/19/1977 | US4018596 Carbonyl nickel powder |
| 04/19/1977 | US4018595 Production of copper by gaseous reduction |
| 04/12/1977 | US4017307 Or metal combinations with the aid of a melting cyclone |
| 03/29/1977 | US4014687 From sodium metal and a magma of magnesium chloride |
| 03/15/1977 | US4012493 Preparation of metal fluorides |
| 03/01/1977 | US4010236 Manganese ore reduction |
| 02/22/1977 | US4009247 Production of metal carbides |
| 02/15/1977 | US4008075 Autogenous smelting of lead in a top blown rotary converter |
| 01/18/1977 | US4003557 Device for the cementation of metals by liquid amalgams |
| 01/11/1977 | US4002463 Upgrading the nickel content from low grade nickel lateritic iron ores |
| 12/28/1976 | US3999981 Production and recovery of metallic carbides from ores and concentrates |
| 12/14/1976 | US3997337 Separation and/or purification of precious metals |
| 12/14/1976 | US3997333 Process for the reduction of complex metallic ores |
| 11/30/1976 | US3994717 Metallothermic production of magnesium in the presence of a substantially static atmosphere of inert gas |
| 11/23/1976 | US3993471 Roasting powdered mineral ore, anthracite and binder |
| 11/09/1976 | US3990891 Aluminum halides |
| 11/09/1976 | US3990889 Metallurgical process using oxygen |
| 10/26/1976 | US3988415 Recovery of precious metal values from ores |
| 10/26/1976 | US3988149 Metallurgical process using oxygen |
| 10/26/1976 | US3988148 Metallurgical process using oxygen |
| 10/05/1976 | US3984232 Reduction of manganiferous oxide minerals |
| 10/05/1976 | US3984231 Process for the two-stage reduction of iron ore in a rotary kiln |
| 09/07/1976 | US3979205 Metal recovery method |
| 08/31/1976 | US3977866 Method for producing titanium |
| 08/24/1976 | US3976760 Continuously producing and recovering metallic chlorides |
| 08/24/1976 | US3976472 Method and an electrically heated device for producing molten metal from powders or lumps of metal oxides |
| 08/17/1976 | US3975188 Arc heater reduction of zinc roast |
| 07/13/1976 | US3969202 Process for the recovery of antimony values from ores containing sulfo-antimony compounds of copper, and arsenic |
| 07/06/1976 | US3967958 Method of winning copper, nickel, and other metals |
| 06/29/1976 | US3966460 Reduction of metal halides |
| 06/29/1976 | US3966459 Process for thermal dissociation of molybdenum disulfide |
| 06/29/1976 | US3966455 Phosphoric acid, zinc oxide, sulfated surfactant, alkali or alkaline metal carbonate |
| 06/22/1976 | US3964898 Process for batch production of sponge iron |
| 05/25/1976 | US3958983 Reacting with an aqueous solution of chromium, vanadium or titanium ore |
| 05/18/1976 | US3957506 Catalytic water treatment to recover metal value |
| 05/18/1976 | US3957503 Extraction of zinc and lead from their sulfides |
| 05/18/1976 | US3957485 Reduction smelting of manganese nodules with a liquid reductant |
| 05/11/1976 | US3955961 Carboxylate metals process |
| 05/04/1976 | US3954447 Process for the protection of a metal ingot against oxidation |
| 04/27/1976 | US3953579 Lanthanum silicide, reducing lanthanum oxide and metal silicide |
| 04/27/1976 | US3953196 By carbonaceous material in a shaft furnace |
| 04/20/1976 | US3951647 From manganese halide and aluminum |
| 04/13/1976 | US3950162 Reduction to manganese metal using metal transporting compounds |
| 04/13/1976 | US3950152 Filter vapor trap |
| 04/06/1976 | US3948639 Process and device for flash smelting sulphide ores and concentrates |
| 03/30/1976 | US3947621 Furnace and method for reducing metal oxides to molten metal |
| 03/09/1976 | US3942976 Metal recovery process |
| 03/02/1976 | US3941587 Metallurgical process using oxygen |
| 02/24/1976 | US3940470 Direct recovery of metals from fluid anhydrous metal halides derived from marine nodule halidation |
| 02/24/1976 | US3940265 Recovery of lead from battery scrap |
| 01/13/1976 | US3932173 Inductially heated gas lift pump action method for melt reduction |