| Patents for C22B 1 - Preliminary treatment of ores or scrap (10,434) |
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| 04/29/1999 | WO1999020803A1 Polymeric combinations used as copper and precious metal heap leaching agglomeration aids |
| 04/29/1999 | WO1999007640A8 Fluidized-bed roasting of molybdenite concentrates |
| 04/29/1999 | CA2274672A1 Polymeric combinations used as copper and precious metal heap leaching agglomeration aids |
| 04/28/1999 | EP0910678A1 Process for reusing dusts from metallurgical processes, such as steel converter dusts containing zinc |
| 04/28/1999 | CN1043154C Method for upgrading titaniferous materials |
| 04/27/1999 | US5896997 Dynamic mining system comprising hydrated multiple recovery sites and related methods |
| 04/21/1999 | EP0909336A1 Process for recovery of zinc from sphalerite containing ores or concentrates |
| 04/21/1999 | CN1214371A Preheating process of mixed sintered material or pellet material |
| 04/15/1999 | WO1999018247A1 Mineral pelletisation |
| 04/15/1999 | CA2301686A1 Mineral pelletisation |
| 04/13/1999 | CA2156824C Method and apparatus for combustion of steel plant wastes |
| 04/08/1999 | WO1999016541A1 A process and apparatus for treating particulate matter |
| 04/08/1999 | DE19750475C1 High temperature treatment of very small particles |
| 04/08/1999 | CA2305260A1 A process and apparatus for treating particulate matter |
| 04/07/1999 | CN1213006A Mineral powder and coke powder cold-press agglomeration and agglomeration method |
| 03/31/1999 | EP0905265A1 Method of reducing water quantity in slurries of oxidic nickel ores by injection of acrylic flocculant |
| 03/31/1999 | EP0904419A1 Fluidized bed roasting process |
| 03/31/1999 | EP0904418A1 Microwave treatment of metal bearing ores and concentrates |
| 03/31/1999 | CN1212732A Process for recovery of zinc from sphalerite containing ores or concentrates |
| 03/31/1999 | CN1212291A Sintering fortifying catalytic additive |
| 03/30/1999 | CA2063075C Autogenous roasting of iron ore |
| 03/30/1999 | CA1340476C System for recovery of salvageable ferrous and non-ferrous metal components from incinerated waste materials |
| 03/25/1999 | DE19815968C1 Briquetted sponge iron production |
| 03/24/1999 | CN1211628A Magnetism-retained reduction calcining regime for siderite, aetite and haematite mixed iron ore |
| 03/24/1999 | CN1211627A Fermentation type preoxidation technique for difficult-treating gold mine |
| 03/24/1999 | CN1042651C Manufacture method of vanadic titanium type ultra-high basicity agglomerate |
| 03/23/1999 | US5885328 Method of agglomerating oil-containing steel mill waste |
| 03/23/1999 | CA2052170C Pyrometallurgical process for treating a feed material |
| 03/09/1999 | US5881359 Metal and fluorine values recovery from fluoride salt matrices |
| 03/09/1999 | US5879618 Whirl-bed drying means, drying gas purification; avoids disturbances due to dust |
| 03/03/1999 | EP0899345A1 Reduced iron manufacturing method and apparatus |
| 03/03/1999 | CN1209845A Reduced iron mfg. method and apparatus |
| 03/03/1999 | CN1042346C Hot pressed carboniferous ore ball fast direct reducing or calcining process |
| 03/02/1999 | CA2101495C Recovery of precious metal values from refractory ores |
| 02/25/1999 | WO1999009224A1 Method and equipment for processing iron- or oil-containing metallurgical waste |
| 02/25/1999 | CA2298504A1 Method and equipment for processing iron- or oil-containing metallurgical waste |
| 02/24/1999 | CN1209110A Inorganic binder compositions, prodn. and use thereof |
| 02/23/1999 | US5874055 Oxidizing ore under pressure in presence of acidic solution containing halide and sulfate ions to produce slurry,filtering, solvent extracting filtrate to produce copper concentrate, recycling depleted raffinate |
| 02/23/1999 | US5873925 Forming green compacts comprising iron ore agglomerated with stoichiometric excess of carbonaceous reducing agent, chemical reduction to elemental iron in heated furnace; by-product inhibition |
| 02/18/1999 | WO1999007640A1 Fluidized-bed roasting of molybdenite concentrates |
| 02/18/1999 | WO1998050142A3 Process for regulating a circulating fluidised bed and use of the process |
| 02/11/1999 | WO1999006600A1 Method for direct reduction and upgrading of fine-grained refractory and earthy iron ores and slags |
| 02/10/1999 | EP0896070A1 Process of upgrading nickel bearing oxidic ores |
| 02/10/1999 | EP0896066A1 Method and apparatus for manufacturing reduced iron |
| 02/10/1999 | EP0895952A1 Device for discharging material from a reactor |
| 02/09/1999 | US5869012 Chloride assisted hydrometallurgical extraction of metal |
| 02/09/1999 | US5868995 Dynamic mining system comprising hydrated multiple recovery sites and related methods |
| 02/09/1999 | US5868255 Alternating current magnetic separator |
| 02/04/1999 | WO1999005329A1 Method for operating a sintering plant, and sintering plant |
| 02/04/1999 | CA2301667A1 Method for operating a sintering plant, as well as sintering plant |
| 02/03/1999 | CN1207141A Method of processing finely divided material incorporating metal based constituents |
| 02/03/1999 | CN1207139A Method and apparatus for manufacturing reduced iron |
| 02/02/1999 | US5865875 Process for treating metal oxide fines |
| 01/20/1999 | CN1205743A Duplex procedure for prodn. of metals and metal alloys from oxidic metal ores |
| 01/13/1999 | EP0776378B1 Hydrometallurgical conversion of zinc sulfide to sulfate from zinc sulfide containing ores and concentrates |
| 01/13/1999 | CN1204694A Basket type mineral powder sintering process and equipment |
| 01/12/1999 | US5858325 Forming aqueous slurry of alumina powder containing inorganic binder of polymer of hydroxy salt of aluminum to agglomerate alumina, spray drying, consolidating by calcining |
| 01/07/1999 | EP0858516A4 Agglomeration of iron oxide waste materials |
| 01/06/1999 | CN1204307A Method for preparing hardened granules from particulate material |
| 01/06/1999 | CN1203954A Production method of direct reduction shaft and blast furnace cold-bonded pellet |
| 01/05/1999 | US5855858 Process for the recovery of nickel and/or cobalt from an ore or concentrate |
| 01/05/1999 | US5855645 Production of more concentrated iron product from industrial waste materials streams |
| 12/30/1998 | CN1041442C Roasting of titaniferous materials |
| 12/30/1998 | CN1041440C Method of producing iron-containing briquettes for smelting iron |
| 12/30/1998 | CN1041439C Lead-antimony directly separating technology for jamesonite |
| 12/23/1998 | WO1998058091A1 Process and plant for producing iron smelt in an electric arc furnace by using agglomerated, iron-containing steel work residues |
| 12/23/1998 | EP0885170A1 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 12/23/1998 | EP0783592B1 Bonded medium |
| 12/23/1998 | CN1202528A Method and apparatus for sintering finely divided material |
| 12/22/1998 | CA2135635C Apparatus for preheating and charging scrap materials |
| 12/22/1998 | CA1340279C Sintered high titanium agllomerates |
| 12/16/1998 | CN1201835A Production of sintered pelletized minerals |
| 12/16/1998 | CN1201834A Method and apparatus for online testing and regulating water content of sintered complex materials |
| 12/16/1998 | CN1041174C Method and apparatus for treating gases and particulate solids in fluid bed |
| 12/15/1998 | US5849062 Method for recovering metallic materials of gas generator for air bag |
| 12/15/1998 | CA1340230C Process for removing heavy metal compounds from the filtrer dust from trash incinerators, flue gas dust precipitators and gas-cleaning units |
| 12/10/1998 | WO1998033943A3 Device for the controlled cooling of hot-briquetted directly reduced iron sponge |
| 12/09/1998 | EP0882141A1 Direct ironmaking or steelmaking apparatus using self-reducing iron oxide pellets |
| 12/09/1998 | CN1041078C Process for calcium-less granulating roasting chromite |
| 12/08/1998 | US5846510 Regeneration of hydrochloric acid |
| 12/03/1998 | WO1998053969A1 Method for processing material comprising aluminium and plastic |
| 12/02/1998 | CN2299068Y Drum mixing pelletizer for agglomerate |
| 12/02/1998 | CN1200478A Equipment-fluidised bed furnace for calcining powdered ore to ball shaped ore, and method for calcining gelatinization material |
| 11/26/1998 | WO1998053108A1 Fluidised bed method for the recovery of metal from organics-containing metal waste |
| 11/18/1998 | CN1199100A Pellet producing method using ferrous oxide steel slag |
| 11/17/1998 | US5837210 Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate |
| 11/17/1998 | CA2141906C Process for battery recycling |
| 11/12/1998 | WO1998050142A2 Process for regulating a circulating fluidised bed and use of the process |
| 11/12/1998 | DE19719481A1 Verfahren zur Einstellung einer zirkulierenden Wirbelschicht und Verwendung des Verfahrens A method for adjusting a circulating fluidized bed and using the method |
| 11/11/1998 | EP0877095A2 process and apparatus for preparing powdery ores for direct reduction |
| 11/11/1998 | CN1198779A Method of manufacturing sintered ore and sintering machine therefor |
| 11/10/1998 | US5833937 Agglomerating by sequential addition of first water soluble anionic or nonionic polymer and second cationic water soluble polymer |
| 11/10/1998 | US5833881 Stable aqueous solutions containing magnesium salt and surfactant of ethoxylated alkyl phenols, phosphate esters or nonionic glucosides, with calcium salt inhibitor; antideposit agents |
| 11/10/1998 | US5833735 Method of making steel |
| 11/04/1998 | EP0875587A1 Iron or sintering process with reduced emissions of toxic gases |
| 11/04/1998 | EP0687309B1 Method and plant for removing and recycling of materials |
| 11/03/1998 | US5830424 Leachate contains metals that form fluorides |
| 10/29/1998 | WO1998048065A1 Method for recycling brass foundry waste |
| 10/29/1998 | DE19816410A1 Method and apparatus for the sintering of a finely divided material containing manganese compounds |
| 10/28/1998 | CN1040460C Process and appts. for producing molten pig iron or molten steel preproducts |