| Patents for C22B 1 - Preliminary treatment of ores or scrap (10,434) |
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| 10/21/1998 | EP0872452A2 Process and apparatus for the purification of oil and water containing mill scale sludges |
| 10/21/1998 | CN2294960Y Raw-coal-burning roasting vertical furnace |
| 10/21/1998 | CN1196756A Reducing iron oxides in rotary hearth furnace |
| 10/20/1998 | US5824133 Treating ore in a resonant microwave cavity while maximizing electric field strength |
| 10/15/1998 | WO1998045485A1 Method for recycling iron bearing sludges in a steelmaking operation |
| 10/14/1998 | EP0870067A1 Method of processing finely divided material incorporating metal based constituents |
| 10/14/1998 | CN2294436Y Pretreatmeng arsenious sulfur furnace for gold sulfide |
| 10/14/1998 | CN2294266Y Fine particle immersion type equipment for raw gold ore concentration and smelting |
| 10/13/1998 | US5820668 Polysialate or a polysialate-siloxo |
| 10/08/1998 | DE19713898A1 Metal extraction, e.g. silver@, gold@ and platinum@ |
| 10/07/1998 | EP0869192A2 Extraction of non-ferrous metal from metal scrap parts by liquation and tunnel furnace installation therefor |
| 10/07/1998 | EP0868406A1 Inorganic binder composition, production and uses thereof |
| 10/07/1998 | EP0843740A4 Reducing iron oxides in rotary hearth furnace |
| 10/07/1998 | CN1040134C Method for recovering zinc from zinc containing dust |
| 10/07/1998 | CN1040131C Activating carbon magnesium type iron smelting pellets |
| 09/30/1998 | EP0866771A1 Iron sulphide compositions |
| 09/30/1998 | EP0866730A2 Polymer coated powders |
| 09/23/1998 | EP0865505A1 Process for hot briqueting granular sponge iron |
| 09/22/1998 | US5810906 Method for preheating feed materials for the production of iron carbide |
| 09/17/1998 | WO1998040524A1 Method of producing an agglomerate |
| 09/17/1998 | WO1998040523A1 Agglomerate for use as blast furnace feedstock |
| 09/15/1998 | US5807420 Process for reduction of iron with solid fuel objects as amended by exam |
| 09/09/1998 | EP0863216A2 Method of treating metal/plastic composite waste material by heat decomposition |
| 09/09/1998 | EP0862657A1 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 09/09/1998 | EP0831984A4 Process for recovering iron from iron-rich material |
| 09/09/1998 | EP0646758B1 Apparatus for preheating and supplying scraps |
| 09/09/1998 | CN1192477A Method for prodn. of pig iron by utilizing iron-contg. dust as raw material |
| 09/08/1998 | US5804150 Calcining sulfide ore with oxygen to form metal oxides and sulfur dioxide, forming aqueous sulfite solution, forming metal sulfates, separating gold from aqueous sulfite and sulfate solutions |
| 09/08/1998 | US5803949 Fluidized bed roasting process |
| 09/02/1998 | EP0861909A1 Use of a briquette of foundry waste agglomerated with a hydraulic binder as a charge material for smelting furnaces of an iron foundry |
| 09/02/1998 | EP0861908A1 Method of manufacturing sintered ore and sintering machine therefor |
| 09/02/1998 | EP0795036A4 Method for producing iron feedstock |
| 09/02/1998 | EP0625957B1 Acid regeneration |
| 09/02/1998 | CN1039657C Production method and apparatus for preheating mixed sinter material using sintered hot waste gas |
| 09/01/1998 | US5800593 Separation of clays from sulfides, oxidation and recovering metals |
| 08/27/1998 | WO1998037246A1 Fluidized bed process for removing organic materials from metallic articles such as aluminum scrap |
| 08/26/1998 | CN1191521A Method of biotreatment for solid materials in nonstirred surface bioreactor |
| 08/26/1998 | CN1039593C Calcining system and technique for fluidized bed-mobile bed mixed reactor |
| 08/19/1998 | EP0858516A1 Agglomeration of iron oxide waste materials |
| 08/12/1998 | EP0807187B1 Method and device for cooling hot briquetted spongy iron |
| 08/11/1998 | US5792235 Method for recovering gold and other precious metals from carbonaceous ores |
| 08/06/1998 | WO1998033943A2 Device for the controlled cooling of hot-briquetted directly reduced iron sponge |
| 08/05/1998 | CN1189540A Furnace of retreating pozzuolite for sulfurized gold ore |
| 08/04/1998 | US5788736 Recovery of titanium values from titanium grinding swarf by electric furnace smelting |
| 07/30/1998 | DE19803431A1 Vorrichtung zum kontrollierten Abkühlen von heißbrikettiertem direktreduziertem Eisenschwamm Apparatus for controlled cooling of hot-briquetted directly reduced iron sponge |
| 07/28/1998 | US5787332 Process for recovering tantalum and/or niobium compounds from composites containing a variety of metal compounds |
| 07/28/1998 | US5785935 Using liquid leachant |
| 07/28/1998 | US5785737 Forming sludge, slag mixture; dehydrating |
| 07/28/1998 | CA2096605C Aqueous oxidation of sulfidic silver ore |
| 07/22/1998 | EP0776377B1 Sulphate agglomeration |
| 07/21/1998 | US5783158 Process for treating sulfide ores containing gold and/or silver and as accompanying metal at least iron |
| 07/21/1998 | US5782957 Process for treating iron bearing material |
| 07/14/1998 | CA2100442C Process for the production of vanadium containing steel alloys |
| 07/09/1998 | WO1998029703A1 Apparatus for conducting gas through material to be sintered |
| 07/08/1998 | CN1187220A Chloride assisted hydrometallurgical extraction of metal |
| 07/08/1998 | CN1187156A Process for recovering iron from iron-rich material |
| 07/07/1998 | US5776225 Refractory metal sponge fines composition |
| 07/01/1998 | CN2285456Y Steam pre-heater for sintering mixed material |
| 07/01/1998 | CN1186524A Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulfide minerals |
| 07/01/1998 | CN1186523A Chloride assisted hydrometallurgical extraction of metal |
| 06/25/1998 | WO1998027239A1 Direct reduction of metal oxide agglomerates |
| 06/25/1998 | WO1998027238A1 Particle agglomeration by metal sulphate hydration |
| 06/25/1998 | WO1998027237A1 Ferrite- and calcium-based flux, mixture for its production, and use thereof |
| 06/25/1998 | DE19756544A1 Tin-coated steel scrap recycling process |
| 06/23/1998 | US5769331 Method and apparatus for recycling empty aluminum cans |
| 06/17/1998 | CN1184854A Method for mfg. high carbon cold solidified briquetting |
| 06/16/1998 | US5766930 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 06/10/1998 | EP0846779A1 Continuous scrap preheating |
| 06/10/1998 | DE19712042C1 Blast furnace charge agglomerate |
| 06/10/1998 | CN1038694C Process for producing an iron melt |
| 06/09/1998 | US5762891 Forming arsenic oxide by oxidation of arsenic sulfide and having metal impurities |
| 06/04/1998 | DE19712025C1 Production of agglomerate for blast furnace |
| 06/02/1998 | US5759231 Drying metal sludge for disposal |
| 05/28/1998 | WO1998022632A1 Refractory metal sponge fines composition |
| 05/28/1998 | WO1998022626A1 Reduced iron manufacturing method and apparatus |
| 05/27/1998 | EP0843741A1 Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof |
| 05/27/1998 | EP0843740A1 Reducing iron oxides in rotary hearth furnace |
| 05/27/1998 | EP0670910B1 Process and device for producing pig iron from iron ore or for thermally and/or chemically treating an easily decomposable material |
| 05/27/1998 | CN1038519C Method for recovering precious metals from carbonaceous ores |
| 05/22/1998 | WO1998021372A1 Method and apparatus for manufacturing reduced iron |
| 05/22/1998 | WO1998021295A1 Blast furnace fuel from reclaimed carbonaceous materials |
| 05/20/1998 | CN1182138A Pretreatment method and its special equipment for extracting gold from refracting sulfide ore and carbide ore |
| 05/20/1998 | CN1038432C Method of production for direct reduction furnace charge by cold-consolidation briquetting method |
| 05/19/1998 | US5752993 Blast furnace fuel from reclaimed carbonaceous materials and related methods |
| 05/19/1998 | US5752561 Adding gas forming substance to ingot mold, adding solid filler, adding liquid iron, allowing gas forming substance to release gases and liquid iron to solidify, forming reduced density intermediate product |
| 05/13/1998 | EP0740695A4 Utilizing discarded carbon |
| 05/12/1998 | US5749472 Dynamic mining system comprising hydrated multiple recovery sites and related methods |
| 05/06/1998 | CN1038259C Method for preventing sponge iron from binding in production |
| 05/05/1998 | CA2104337C Continuous scrap preheating |
| 05/05/1998 | CA1339850C Polymeric compositions |
| 04/30/1998 | WO1998017395A1 A method for processing refractory auriferous sulfide ores involving preparation of a sulfide concentrate |
| 04/28/1998 | US5744107 Process for removing heavy metals from soil |
| 04/16/1998 | WO1998015662A1 A method and an apparatus for producing metals and metal alloys |
| 04/16/1998 | CA2267776A1 A method and an apparatus for producing metals and metal alloys |
| 04/15/1998 | EP0604452B1 Ore pelletisation |
| 04/14/1998 | US5738694 A compressed briquet for waste recycling comprising polymeric binder, carbon for reduction, kaolin filler and calcium carbonate hardener |
| 04/14/1998 | CA2045254C Treatment of automobile shredder residue by vacuum pyrolysis |
| 04/08/1998 | EP0834584A1 Recovery of tantalum and/or niobium from metalfluoride containing materials and ore residues with use of sulfuric acid roasting |
| 04/08/1998 | CN1037983C Improved process for separating ilmenite and ilemenite treated by the process |
| 04/07/1998 | US5736113 Method for beneficiation of trona |