| Patents for C22B 1 - Preliminary treatment of ores or scrap (10,434) |
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| 04/01/1998 | EP0832306A2 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide ores |
| 04/01/1998 | EP0832303A1 Chloride assisted hydrometallurgical extraction of metal |
| 04/01/1998 | EP0832302A1 Chloride assisted hydrometallurgical extraction of metal |
| 04/01/1998 | EP0831984A1 Process for recovering iron from iron-rich material |
| 04/01/1998 | CN1037917C Technology for smelting ferrochrome using powdered Cr ore reductive sintered blocks |
| 03/26/1998 | CA2212714A1 Process for recovering tantalum and/or niobium compounds from compositescontaining a variety of metal compounds |
| 03/25/1998 | CN1177010A Tech. of briquetting ferro alloy |
| 03/18/1998 | EP0828689A1 Metal and fluorine values recovery from fluoride salt matrices |
| 03/17/1998 | US5728197 Reclamation process for tungsten carbide/cobalt using acid digestion |
| 03/11/1998 | EP0665899B1 Process and device for melting scrap |
| 03/11/1998 | CN1175981A Method of feeding sintering material by use of magnetic forces |
| 03/05/1998 | WO1998008989A1 Method for microwave induced oxidation of sulphidic ore material in fluidized bed without sulphur dioxide emissions |
| 03/05/1998 | CA2263497A1 Method for microwave induced oxidation of sulphidic ore material in fluidized bed without sulphur dioxide emissions |
| 03/05/1998 | CA2263309A1 Process for reducing co and cos emissions from a fluidized bed reactor for chlorinating titanium containing material |
| 03/04/1998 | CN1175111A Method for recoverying copper from winding |
| 03/04/1998 | CN1174891A Method for making pellet raw ball by using magnet |
| 03/03/1998 | US5722929 Particle agglomeration with acidic sulphate |
| 02/26/1998 | WO1998007891A1 Method of manufacturing sintered ore and sintering machine therefor |
| 02/25/1998 | EP0824967A1 Reprocessing method for salvaged metallic materials |
| 02/25/1998 | CN1037516C Additive for metallurgical sintering |
| 02/19/1998 | WO1998006878A1 Precious metal recovery from refractory sulphidic ores |
| 02/18/1998 | CN2274642Y Cold pelletizer for metallurgy |
| 02/18/1998 | CN2274641Y Multi-layer stepped cylinder mixing pelletizer |
| 02/17/1998 | US5718880 Method of increasing the bulk density of iron oxide powder |
| 02/13/1998 | CA2183124A1 Process for obtaining access to refractory gold and/or silver in arsenical ore |
| 02/12/1998 | WO1998005439A1 Method of thermal decomposition of scrap motor vehicle and apparatus therefor |
| 02/12/1998 | WO1998005418A1 Method and apparatus for microwave treatment of metal ores and concentrates in a fluidized bed reactor |
| 02/12/1998 | DE19631793A1 Recovery of steel or iron blasting residue |
| 02/12/1998 | CA2262956A1 Method and apparatus for microwave treatment of metal ores and concentrates in a fluidized bed reactor |
| 02/11/1998 | EP0687349B1 Method and apparatus for combustion of steel plant wastes |
| 02/11/1998 | EP0474704B1 Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases |
| 02/05/1998 | WO1998004755A1 'waelz' method for processing of zinc containing materials in pelletized form |
| 01/28/1998 | EP0820532A1 Process for the separation of copper and heavy metals from incinerated garbage residue and slag |
| 01/28/1998 | EP0820531A1 Reuse of metallurgical fines |
| 01/28/1998 | EP0751821A4 A process for producing agglomerates |
| 01/28/1998 | CN1037196C Iron-containing oxide briquet for cupola and making process thereof |
| 01/28/1998 | CN1037195C Belt-type roasting device and method using coal powder |
| 01/28/1998 | CN1037194C Preheating device of raw briquet |
| 01/27/1998 | US5711922 Preferential hydrometallurgical conversion of zinc sulfide to sulfate from zinc sulfide containing ores and concentrates |
| 01/22/1998 | WO1998002593A1 Process for heat treatment of organically contaminated material |
| 01/21/1998 | EP0819771A1 Reclamation process for tungsten carbide/cobalt using oxidation and acid digestion |
| 01/21/1998 | CN1037114C Method for producing high resistance high activity charging stock for electric furnace |
| 01/20/1998 | US5709731 Slurry pipeline leaching method |
| 01/15/1998 | WO1998001590A1 Process for reusing dusts from metallurgical processes, such as steel converter dusts containing zinc |
| 01/14/1998 | EP0818547A1 Recovery of metals values from air bag inflators |
| 01/08/1998 | DE19626387A1 Metal extraction process from ores, especially for precious metals |
| 01/06/1998 | US5704823 Tumbling with metal powder |
| 01/01/1998 | CA2209262A1 Recovery of titanium values from titanium grinding swarf by electric furnace smelting |
| 12/31/1997 | WO1997049835A1 Process and apparatus for production of useful iron product from industrial waste streams |
| 12/31/1997 | CA2259325A1 Process and apparatus for production of useful iron product from industrial waste streams |
| 12/30/1997 | US5702500 Integrated process for the recovery of metals and fused alumina from spent catalysts |
| 12/30/1997 | CA2126781C Revert briquettes for iron making blast furnace |
| 12/24/1997 | WO1997048824A1 Method of producing hot metal |
| 12/24/1997 | CA2234562A1 Method of producing hot metal |
| 12/23/1997 | US5700425 Device for the pretreatment of electronic scrap |
| 12/16/1997 | US5698009 Method for agglomerating pre-reduced hot iron ore particles to produce ingot iron |
| 12/16/1997 | US5698007 Pretreating particulates with liquid spray of hydroxide ion source, mixing with water soluble polymer binder and water, agglomerating |
| 12/11/1997 | WO1997046844A1 Process for applying sinter material on an already scaled sinter ground coat |
| 12/11/1997 | WO1997046724A1 Process for obtaining chromium enriched chromite from chromite ores |
| 12/11/1997 | WO1997046723A1 Process for producing a metallurgical raw material from oil containing heavy metals |
| 12/11/1997 | WO1997046722A1 Recovery of iron products from waste material streams |
| 12/11/1997 | CA2257910A1 Recovery of iron products from waste material streams |
| 12/10/1997 | CN1167156A Process for producing molten pig iron or molten steel preproducts |
| 12/09/1997 | US5695543 Method for metal reduction of steel waste products |
| 12/04/1997 | WO1997045564A1 Fluidized bed treatment of eaf dust |
| 12/04/1997 | WO1997045561A1 Method of agglomerating oil-containing steel mill waste |
| 12/04/1997 | DE19622153A1 Verfahren zur Erzeugung eines metallurgischen Rohstoffs A process for producing a metallurgical raw material |
| 12/04/1997 | CA2256726A1 Fluidized bed treatment of eaf dust |
| 12/04/1997 | CA2255956A1 Method of agglomerating oil-containing steel mill waste |
| 12/03/1997 | CN1166800A Method of recovering metal materials from gas generator for air bag |
| 11/19/1997 | EP0807187A1 Method and device for cooling hot briquetted spongy iron |
| 11/11/1997 | US5685893 Ore pelletization |
| 11/11/1997 | US5685524 Preheating |
| 11/06/1997 | WO1997041268A1 Fluidized bed roasting process |
| 11/05/1997 | EP0596992B1 Ore pelletisation |
| 11/04/1997 | US5683488 Method for producing an iron feedstock from industrial furnace waste streams |
| 10/30/1997 | WO1997040198A1 Method for extracting gold from auriferous sand and other materials |
| 10/29/1997 | EP0619764B1 Process for removing heavy metals from soils |
| 10/28/1997 | US5681367 Preparing green pellets for reducing to sponge iron pellets, each comprising iron ore, carbon reductant, slag forming materials, reducing in heated reducing zone, feeding to smelting zone having lower temperature to reduce further |
| 10/28/1997 | CA2090482C Process for separating ilmenite |
| 10/22/1997 | CN1162647A Method for pelletizing hematite by cold process |
| 10/22/1997 | CN1036210C Sintering ore for producing an iron consisting of raw material of pisolite iron ore and process for producing the same |
| 10/15/1997 | EP0801137A1 Process for recovering copper from insulated copper wire windings |
| 10/15/1997 | CN1162020A Method for adhering solid fuel onto granulated sintered mixed material |
| 10/14/1997 | US5676775 Process for manufacturing corrosion resistant metal products |
| 10/14/1997 | US5676734 Hot drying gas flows around ore particles of fine ore, releasing entrained dust ore particles, collecting and mixing the dust ore particles with dried fine ore, drying is effected in a fluidized bed |
| 10/14/1997 | US5676733 Separation of clay and fines; forming concentrate; leaching; oxidation of iron sufide; hydrometallurgy |
| 10/09/1997 | WO1997037048A1 Process for separating sulphide-containing materials using hydrogen peroxide |
| 10/08/1997 | CN1161379A Method for extracting gold from refractory ore |
| 10/02/1997 | DE19613746A1 Verfahren zur Auftrennung sulfidhaltiger Restprodukte des Bergbaus und der Metallverarbeitung A process for separating sulphide waste products of mining and metal processing |
| 09/24/1997 | CN1160422A Sintering iron ore blend contg. porous ores |
| 09/24/1997 | CN1160084A Method for making quicklime iron concentrate briquette agglomerate |
| 09/23/1997 | US5669955 Reduction |
| 09/18/1997 | WO1997034019A1 Microwave treatment of metal bearing ores and concentrates |
| 09/18/1997 | CA2248889A1 Microwave treatment of metal bearing ores and concentrates |
| 09/17/1997 | EP0795036A1 Method for producing iron feedstock |
| 09/17/1997 | EP0751831B1 Method and device for treating composite elements |
| 09/17/1997 | CN1035887C Method for producing high Ti cold curing pellet |
| 09/16/1997 | US5668219 Cationic block polymer agglomeration agents for mineral bearing ores |
| 09/12/1997 | WO1997033007A1 Process for recovery of zinc from sphalerite containing ores or concentrates |