| Patents for C22B 1 - Preliminary treatment of ores or scrap (10,434) |
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| 11/23/1989 | DE3815766A1 Process for producing pellets of crude phosphate |
| 11/16/1989 | DE3816493A1 Process for separating a starting product, preferably mill scale, into its constituents |
| 11/14/1989 | US4880858 Coal fines and polymers |
| 11/14/1989 | US4880685 Pollution control, heat treatment |
| 11/14/1989 | US4880607 Leaching with diluents to recover uranium |
| 11/09/1989 | DE3814127A1 Process for the sinter-roasting of sulphide ores |
| 11/07/1989 | US4878654 Method for cooling gases and/or vapors from non-ferrous metal treatment plants, and the relative apparatus |
| 11/02/1989 | DE3841835C1 Process for the manufacture of re-usable products from metallic sludges containing large amounts of adhering oil or other impurities |
| 11/01/1989 | CN1036798A Process for utilizing of zinc-containing metallurgical dusts and sludges |
| 11/01/1989 | CN1036796A Wet processed concentrate ore used iron smelting process in blast-furnace |
| 10/31/1989 | US4877449 Vertical shaft melting furnace and method of melting |
| 10/24/1989 | US4875935 Anionic acrylamide polymers as copper ore agglomeration aids |
| 10/17/1989 | US4874486 Pyrolysis; electrolysis of slag; separation |
| 10/11/1989 | EP0336923A2 Process for valorization of zinciferous flue dusts and muds |
| 10/10/1989 | US4872906 Process and plant for producing binder-free hot briquettes |
| 10/05/1989 | WO1989009289A1 A process of recovering non-ferrous metal values, especially nickel, cobalt, copper and zinc, by using melt and melt coating sulphation, from raw materials containing said metals |
| 10/05/1989 | DE3809883A1 Process for producing pelleted fly ash |
| 10/03/1989 | US4871393 Apparatus and method for feeding sintering raw mix |
| 10/03/1989 | CA1262031A1 Production of elements and compounds by deserpentinization of ultramafic rock |
| 09/27/1989 | EP0334413A1 Process for the production of solid agglomerates from mineral sludges |
| 09/27/1989 | EP0334048A2 Process for making shaped bodies |
| 09/27/1989 | CN1035848A Technology of using vanadium-and chromium-leaching tailings in iron smelting |
| 09/26/1989 | CA1261146A1 Process of thermally treating lump or agglomerated materials on a travelling grate |
| 09/21/1989 | WO1989008724A1 Reduced chromium-ore bearing powder and method for producing the same |
| 09/19/1989 | CA1259493A1 Method for continuously manufacturing fired pellets |
| 09/12/1989 | US4865642 Compacting mixture of metal (or metal compounds) dusts and combustible binder |
| 09/05/1989 | US4863512 Alkali metal carboxymethyl cellulose |
| 08/23/1989 | EP0329281A2 A particle agglomeration process |
| 08/23/1989 | EP0214268B1 A method for working-up waste products containing valuable metals |
| 08/16/1989 | CN1034682A Concentration and nodulizing technology of sintered pyrite slag |
| 08/15/1989 | CA1258376A1 Process of hard-burning iron ore pellets on a traveling grate |
| 08/02/1989 | EP0326382A2 Polymeric compositions |
| 08/02/1989 | EP0325750A1 Metallic coolant for a metallurgical bath, method of cooling using the coolant, method of manufacture thereof |
| 08/02/1989 | EP0157805B1 Process, plant and/or device for preparing oil-coated scales or similar materials |
| 08/01/1989 | US4853031 Sensible heat added to the fluidized bed of iron containing pyrophorous finely divided solids until oxidation of metallic iron starts; energy saving |
| 08/01/1989 | US4852858 Charging material preheater for preheating charging material for a metallurgical smelting unit |
| 07/25/1989 | US4851038 Quicklime, iron ore, powdered coke |
| 07/11/1989 | US4846884 Process for producing cold-bonded iron ore for use in a blast furnace |
| 07/04/1989 | US4844351 Method for separation, recovery, and recycling of plastics from municipal solid waste |
| 06/27/1989 | US4842255 Dross cooling apparatus |
| 06/21/1989 | CN2039823U Electric smelting unit for magnesite |
| 06/21/1989 | CN1033465A Processing method for mineral materials containing copper oxide |
| 06/20/1989 | US4840774 Chlorination in presence of carbon and binder; purity, free of silicon tetrachloride |
| 06/07/1989 | EP0319181A1 Molybdenum addition agent and process for its production |
| 06/07/1989 | CN2038907U Combined device for coking and metal ball |
| 06/06/1989 | US4836847 Method for reclaiming metal values from electric arc furnace flue dust and sludge and rendering residual solids recyclable or non-hazardous |
| 05/31/1989 | EP0317832A1 Multi-tier load fixture for a top-loading furnace |
| 05/31/1989 | CN1033195A Process and equipment for the production of cold setting pellets of powdered iron concentrate |
| 05/24/1989 | CN2038108U Equipment of dearsenifying and desulphurization by ebulient roasting for the concentrate tin ore |
| 05/23/1989 | US4831940 Metal separation system for incinerators |
| 05/09/1989 | US4828661 Process for recovery of metals from metal/plastic waste |
| 04/27/1989 | DE3734892A1 Process for dressing metallurgical dusts |
| 04/18/1989 | CA1252634A1 Process of making silicon, iron and ferroalloys |
| 04/11/1989 | CA1252297A1 Process of treating dissociated zircon |
| 03/29/1989 | EP0309016A1 Process for making briquettes without binders, from steel plant dusts |
| 03/28/1989 | US4815971 Multi-tier load fixture for a top-loading furnace furnace |
| 03/15/1989 | CN1031719A Compound ferromanganese pellet and its application in blast-furnace iron smelting |
| 03/14/1989 | US4812167 Drying, aggregation, calcination, vacuum thermal cracking |
| 03/14/1989 | CA1251040A1 Pellet cooler |
| 03/08/1989 | EP0305502A1 Process for the production of group ivb transition metal-alkali metal-fluoride salts and purification thereof |
| 03/07/1989 | US4810290 Ore core, calcium ferrite layer coated with solid fuel |
| 02/22/1989 | CN1031254A Blowing process for all cold charge in fume-off furnace |
| 02/15/1989 | CN1003307B Process for direct reduction of briquets bound with high molecular substances |
| 02/14/1989 | US4804319 Process for compacting iron particles and subsequent breaking apart of the compacted iron band |
| 02/08/1989 | EP0302120A1 Apparatus for recovering waste heat of sintering |
| 02/08/1989 | CN1030943A Binder for metal-containing ores |
| 02/07/1989 | US4802919 Heating in reducing slag with carbonaceous material |
| 02/07/1989 | US4802914 Process for agglomerating mineral ore concentrate utilizing dispersions of polymer binders or dry polymer binders |
| 02/07/1989 | CA1249725A1 Recovery of chlorine |
| 02/01/1989 | EP0302000A2 Process for reducing agglomerate disaggregation |
| 01/31/1989 | CA1249416A1 Process for the production of sulfur dioxide |
| 01/18/1989 | EP0299340A1 Method of removing heavy metal compounds from the filter dust from plants for the incineration of solid waste from plants for removing dust from smoke gases and from plants for gas purification |
| 01/17/1989 | US4798717 Production of elements and compounds by deserpentinization of ultramafic rock |
| 01/12/1989 | DE3721509A1 Process and apparatus for leaching metal-containing, non-predried raw materials |
| 01/04/1989 | EP0297553A1 Binder for metal-containing ores |
| 12/28/1988 | EP0296585A2 Method for separating crusts and substrates |
| 12/28/1988 | CA1247506A Process and apparatus for removing rubber and/or plastic material from composite bodies comprising metal and at least one of said materials |
| 12/28/1988 | CA1247306A Process for agglomeration of mineral ore particles utilizing a mixture of hydroxyethylcellulose and sodium carbonate |
| 12/21/1988 | EP0296068A2 Process for agglomerating ore concentrate utilizing non-aqueous dispersions of water-soluble polymer binders. |
| 12/20/1988 | US4792342 Powder densification using ice |
| 12/13/1988 | CA1246343A1 Agglomerated ores and a producing method therefor |
| 12/06/1988 | US4789529 Recovery of zinc from zinc bearing sulphidic ores and concentrates by controlled oxidation roasting |
| 12/06/1988 | US4789332 Apparatus for removing volatiles from metal |
| 11/30/1988 | CN88103135A Cold-concreted pellets used directly for steel-and iron-smelting |
| 11/30/1988 | CN88101986A High-temp. chlorination method for refractory mineral in tin ore |
| 11/29/1988 | CA1245462A1 Method and apparatus for batch preparation and feeding into the smelting process |
| 11/24/1988 | DE3733332C1 Process for sinter roasting of sulphidic ores |
| 11/23/1988 | EP0291701A1 Charge preheater for preheating the charge of a metallurgical melting installation |
| 11/23/1988 | CN88102184A Charging material preheater for preheating charging material for a metallurgical smelting unit |
| 11/15/1988 | US4784603 Delacquering aluminum cans |
| 11/15/1988 | CA1244655A1 Method for recovering the valuable metal content of contaminated copper raw material |
| 11/03/1988 | WO1988008407A1 Process for surface treating clay minerals and reactive intermediates produced by said process |
| 10/26/1988 | EP0288150A1 Ore pelletisation |
| 10/26/1988 | CN88101909A Apparatus and method for feeding sintering raw mix |
| 10/19/1988 | EP0286844A1 Process and apparatus for preparing binder-free firing briquets |
| 10/12/1988 | EP0286381A2 Apparatus and method for feeding sintering raw mix |
| 10/12/1988 | CN87102448A Process for dressing copper oxide ore |
| 10/04/1988 | US4775413 Concentration and recovery of mineral values from ores |
| 09/22/1988 | WO1988007191A1 Process for the production of group ivb transition metal-alkali metal-fluoride salts and purification thereof |
| 09/21/1988 | CN87101959A Box type step-by-step sintering process and relevant apparatus |