| Patents for C22B 1 - Preliminary treatment of ores or scrap (10,434) |
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| 09/11/1997 | DE19609286A1 Treating granular sulphidic ore containing gold and silver with improved metal recovery |
| 09/11/1997 | DE19609284A1 Treating granular sulphidic ores containing gold and/or silver |
| 09/10/1997 | CN1158903A Industrial production method of cold-cured pellet used directly for iron and steel smelting |
| 09/09/1997 | CA2199534A1 Process of treating gold-containing sulfide ores |
| 09/09/1997 | CA2199529A1 Process of treating sulfide ores containing gold and/or silver and as accompanying metal at least iron |
| 09/04/1997 | WO1997031861A1 Process for stabilization of arsenic |
| 09/04/1997 | CA2247098A1 Process for stabilization of arsenic |
| 08/27/1997 | CN1035728C Method for producing particle agglomerate for sted-smelting by oxygen converter damp dust |
| 08/26/1997 | US5660806 Deleading by leaching, dissolving in hydrochloric acid or sulfuric acid and a salt of alkali metal, alkaline earth metal or ammonium, recovering from liquid phase |
| 08/26/1997 | CA2044731C Method for extraction of valuable minerals and precious metals from oil sands ore bodies and other related ore bodies |
| 08/21/1997 | WO1997017307A3 Method for preparing hardened granules from a particulate material |
| 08/20/1997 | CN1157330A Aluminum electrolytic flue dust, dirty material, adsorbent asphalt aluminum oxide boiling roasting device |
| 08/14/1997 | WO1997029214A1 Process for the separation of copper and heavy metals from incinerated garbage residue and slag |
| 08/14/1997 | CA2216714A1 Process for the separation of copper and heavy metals from incinerated garbage residue and slag |
| 08/13/1997 | CN1157009A Hydrometallurgical conversion of zinc sulfide to sulfate from zinc sulfide containing ores and concentrates |
| 08/12/1997 | US5656062 Treating with aqueous solution of water soluble salt of magnesium compound, surfactant and calcium salt inhibitor |
| 08/06/1997 | EP0787809A1 Apparatus for charging raw sinter mix to sintering machine |
| 08/06/1997 | CN1156483A Method and apparatus for used aluminum can recycling |
| 08/05/1997 | US5653945 Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate |
| 07/30/1997 | EP0786532A2 Briquette containing silicious residual matter, useful as additive for metallurgical purposes and process for the manufacture thereof |
| 07/30/1997 | EP0786529A1 Process for improving recovery of metals from sulphidic ores or bulk concentrates |
| 07/30/1997 | EP0786016A1 Roasting of titaniferous materials |
| 07/30/1997 | CN1155587A Removal of arsenic from rich arsenic content materials |
| 07/29/1997 | US5651465 Beneficiation of saline minerals |
| 07/24/1997 | WO1997026375A1 Direct ironmaking or steelmaking apparatus using self-reducing iron oxide pellets |
| 07/24/1997 | CA2243124A1 Direct ironmaking or steelmaking apparatus using self-reducing iron oxide pellets |
| 07/23/1997 | CN1035481C Organic binder for metallurgy |
| 07/22/1997 | US5650057 Chloride assisted hydrometallurgical extraction of metal |
| 07/17/1997 | WO1997025448A1 Method for beneficiation of trona |
| 07/16/1997 | EP0784035A1 Method for processing particulate materials into hardened granules |
| 07/16/1997 | EP0783592A1 Bonded medium |
| 07/16/1997 | EP0783456A1 Process for the realization of endothermic reactions for the thermal decomposition of solids, producing gases and solid residues |
| 07/16/1997 | EP0568670B1 Regeneration of hydrochloric acid |
| 07/16/1997 | CN1154414A Process for briquetting copper ore concentrate |
| 07/15/1997 | US5647288 Scrap conveyor having improved scrap pre-heating construction |
| 07/09/1997 | CN1154147A Sintered steel manufacturing process |
| 07/03/1997 | WO1997023657A1 Method of feeding sintering material by use of magnetic forces |
| 07/03/1997 | WO1997023427A1 Inorganic binder composition, production and uses thereof |
| 07/03/1997 | CA2241224A1 Inorganic binder composition, production and uses thereof |
| 07/02/1997 | EP0695370B1 Agglomerating by extrusion |
| 07/02/1997 | CN1153218A 铁矿球团复合添加剂 Iron ore pellet compound additive |
| 07/01/1997 | US5642863 Method of extracting metals from ore material |
| 06/26/1997 | WO1997022555A1 Iron sulphide compositions |
| 06/25/1997 | CN1152620A Method for producing high grade iron agglomerate by chromium slag |
| 06/19/1997 | WO1997021842A1 Process for thermal treatment of refractory gold ores |
| 06/19/1997 | WO1997021840A1 Process for hot briqueting granular sponge iron |
| 06/19/1997 | DE19546538A1 Verfahren zur thermischen Behandlung refraktärer Golderze Method for the thermal treatment of refractory gold ores |
| 06/18/1997 | CN1035196C Direct reduction technology for iron concentrate coal base and compound adhesive therewith |
| 06/12/1997 | WO1997013815A3 Polymer coated powders |
| 06/12/1997 | DE19545985A1 Verfahren zum Heißbrikettieren von körnigem Eisenschwamm A method for hot briquetting of granular sponge iron |
| 06/11/1997 | CN1151442A Impurity-removing method of extracting weathered superficial leaching rare-earth ore |
| 06/11/1997 | CN1151338A Method of preparing iron powder and its products by using steelmaking converter smoke or slude |
| 06/04/1997 | EP0776378A1 Hydrometallurgical conversion of zinc sulfide to sulfate from zinc sulfide containing ores and concentrates |
| 06/04/1997 | EP0776377A1 Sulphate agglomeration |
| 06/04/1997 | CN1035068C Comprehensive utilization technique for ash and cinder of oxygen-blown open hearth |
| 06/03/1997 | US5635152 Acid regeneration |
| 06/03/1997 | US5634985 Method for the control of surface properties of magnesium particles |
| 05/22/1997 | WO1997018338A1 Method of processing finely divided material incorporating metal based constituents |
| 05/22/1997 | CA2237874A1 Method of processing finely divided material incorporating metal based constituents |
| 05/20/1997 | US5631045 Polymer coated powders |
| 05/20/1997 | US5630864 Method of processing ore on a traveling grate |
| 05/15/1997 | WO1997017473A1 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 05/15/1997 | WO1997017307A2 Method for preparing hardened granules from a particulate material |
| 05/14/1997 | EP0773300A1 Scrap melting method |
| 05/09/1997 | WO1997016573A1 Agglomeration of iron oxide waste materials |
| 05/09/1997 | CA2236258A1 Agglomeration of iron oxide waste materials |
| 05/07/1997 | EP0771881A1 An integrated process for the recovery of metals and fused alumina from spent catalysts |
| 05/07/1997 | EP0719346A4 Ilmenite processing using cold milling |
| 05/07/1997 | EP0712446B1 Process for producing steel using briquettes from smelting residues |
| 05/06/1997 | US5626664 Metal agglomerates with fly ash, coke or blast furnace flue gas dust |
| 05/06/1997 | US5626647 Method for recovering gold and other precious metals from carbonaceous ores |
| 04/30/1997 | CN1148627A Lead-antimony directly separating technology for jamesonite |
| 04/30/1997 | CN1034743C Process for making rare-earth material liquid from bastnae site |
| 04/23/1997 | EP0769074A1 Sintering an iron ore blend containing porous ores |
| 04/17/1997 | WO1997013815A2 Polymer coated powders |
| 04/16/1997 | CN1147774A Method and device for treating composite elements |
| 04/16/1997 | CN1147558A Method of nodulizing converter flyash for iron-smelting |
| 04/16/1997 | CN1147557A Primer paving technology |
| 04/16/1997 | CN1034590C Production of steel-smelting metal raw materials by use of pig iron solid decarbonization method |
| 04/10/1997 | DE19537283A1 Treating waste contg. metallurgical fines to recover metals |
| 04/09/1997 | EP0767242A1 Sintered steel manufacturing process |
| 04/08/1997 | US5617955 Dynamic-mining system comprising hydrated multiple recovery sites and related methods |
| 04/03/1997 | WO1997012069A1 Material for use in manufacturing ingots for steel smelting treatment and a method of obtaining said material, ingot for steel smelting treatment, method and machine for obtaining said ingot |
| 03/30/1997 | CA2186693A1 System for neutralization of mineral ore slurries |
| 03/25/1997 | CA2039687C Method for operation of flash smelting furnace |
| 03/19/1997 | CN2249756Y Hot press pelletizing apparatus |
| 03/19/1997 | CN1034285C A method for producing a sinter cake and sinter cake therefrom |
| 03/18/1997 | US5611839 Method for rendering refractory sulfide ores more susceptible to biooxidation |
| 03/06/1997 | WO1997008349A1 Extraction of valuable metals from sulphide minerals |
| 03/06/1997 | WO1997008347A1 Process for treating metal oxide fines |
| 03/05/1997 | EP0710297A4 Method of extracting fluorine from minerals or mineral species |
| 03/05/1997 | CN1034185C High firmness hydrogen absorbing and its isotopic absorption agent |
| 03/04/1997 | US5607505 Waste treatment process |
| 02/20/1997 | WO1997006283A1 Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof |
| 02/20/1997 | WO1997006281A1 Reducing iron oxides in rotary hearth furnace |
| 02/20/1997 | CA2229058A1 Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof |
| 02/19/1997 | EP0758683A1 A method of increasing the bulk density of iron oxide power |
| 02/13/1997 | WO1996041029A3 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide ores |
| 02/12/1997 | EP0758024A1 Process for agglomerating oily mill scale sludges |
| 02/12/1997 | CN1142845A Utilizing discarded carbon |