| Patents for C22B 7 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof (11,341) |
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| 02/08/1977 | US4007036 Method of smelting aluminum |
| 02/01/1977 | US4006284 Extended arc furnace and process for melting particulate charge therein |
| 01/25/1977 | US4004918 Kneading sludge cakes, binders, reduction |
| 01/25/1977 | US4004916 Method for agglomerating wet-collected fume for use in metallurgical furnaces and agglomerates produced thereby |
| 01/18/1977 | US4003736 Method for preparing dry-collected fume for use in metallurgical furnaces |
| 01/18/1977 | US4003559 Apparatus for recovery of metallic zinc from dross |
| 01/11/1977 | US4002544 Hydrometallurgical process for the recovery of valuable components from the anode slime produced in the electrolytical refining of copper |
| 01/11/1977 | US4002470 Process for recovering ruthenium |
| 01/11/1977 | US4002468 Scrap smelting process |
| 01/04/1977 | US4001011 Pyrometallurgical recovery of iron from iron silicate slags |
| 12/28/1976 | US3999983 Method of recovering the constituents of catalysts comprising an aluminous carrier, platinum and iridium |
| 12/21/1976 | US3998627 Process for recovering metals from metal ammine bearing ammonium salt solutions using ion exchange resin |
| 12/14/1976 | US3997336 Metal scrap melting system |
| 12/07/1976 | US3996046 Extraction and purification of silver from sulfates |
| 11/16/1976 | US3992270 Iron, nitric acid lixiviation |
| 11/02/1976 | US3989513 Method for the treatment of red mud |
| 10/12/1976 | US3985857 Process for recovering zinc from ferrites |
| 10/12/1976 | US3985854 Rh from car exhaust catalystsreacting hydrochloric acid and bromine with exhaust catalysts to leach out platinum or rhodium |
| 09/28/1976 | US3982930 Drilling, strontium nitrate |
| 08/24/1976 | US3976743 Treatment of zinc plant residue |
| 08/10/1976 | US3974253 Leaching of copper ores to recover sulfur and silver catalyst |
| 08/10/1976 | US3973763 System for melting metal |
| 07/27/1976 | US3971712 Process for removing sulfur impurities from a fluid by contact with silver articles |
| 07/27/1976 | US3971652 Leaching |
| 06/29/1976 | US3966569 Method of recovering metal from metalliferous waste |
| 06/29/1976 | US3966461 Selective removal of bismuth from oxidized particulate materials |
| 06/22/1976 | US3965238 Acidifying phosphate rock, solvent extraction |
| 06/08/1976 | US3961943 Process for recovering palladium |
| 05/25/1976 | US3959154 Method and composition for retarding the evaporation of ammonia and amines |
| 05/11/1976 | US3955970 Continuous melting of aluminum scrap |
| 05/11/1976 | US3955969 Process for the production and use of activated alumina |
| 04/27/1976 | US3953306 Metal recovery from waste treatment sludges |
| 03/30/1976 | US3947543 Process for recovering copper and noble metals from organic residues |
| 03/23/1976 | US3945817 Method for the collection of dust of a high zinc content during the production of reduced iron pellets |
| 03/16/1976 | US3944414 Treatment of anode slime from copper electrolysis |
| 03/02/1976 | US3941587 Metallurgical process using oxygen |
| 02/24/1976 | US3940265 Recovery of lead from battery scrap |
| 02/17/1976 | US3939089 Etching solutions for copper and copper alloys and etching process using the same |
| 01/20/1976 | US3933478 Recovery of zinc and copper from brass scrap |
| 01/20/1976 | US3933473 Aluminum |
| 01/06/1976 | US3931044 Method for recovering molybdenum catalyst values and use of said values in the recycling of said catalyst |