| Patents for C21B 3 - General features in the manufacture of pig-iron (3,260) |
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| 01/05/2000 | EP0969104A1 Process and device for granulating and grinding liquid slag |
| 01/05/2000 | EP0969072A1 Technique for insulation and fireproofing of metall structures |
| 01/04/2000 | US6010553 Process for producing pig iron, nonferrous heavy metal alloys, FECR and synthetic blast furnace slags using metal-oxide-containing waste incineration residues or slags |
| 12/29/1999 | WO1999067182A1 Method for crushing and reducing slag containing metal oxide |
| 12/29/1999 | EP0683824B1 Process and device for granulating and crushing molten materials and grinding stocks |
| 12/22/1999 | CN1239516A Steel slag and ferriferous material reprodcessing process useful to produce pig iron and environmentally compatible slags |
| 12/16/1999 | WO1999064635A1 Method for desiliconizing pig iron before refining it to steel |
| 12/16/1999 | CA2299277A1 Method for desiliconizing pig iron before refining it to steel |
| 12/15/1999 | EP0963447A1 Method for granulating and grinding molten material and device for carrying out said method |
| 12/14/1999 | US6000242 Apparatus for and process of water granulating matte or slag |
| 11/30/1999 | US5994610 Method of suppressing thermite reactions in plasma arc waste destruction system |
| 11/30/1999 | US5993510 Process for working up combustion residues |
| 11/30/1999 | US5993508 Briquette as an additive for metallurgic purposes comprising silicon-containing residues, and process for its production |
| 11/17/1999 | EP0956166A2 Lightweight compact waste treatment furnace |
| 11/16/1999 | CA2116328C Slag granulation |
| 10/26/1999 | US5972283 Stabilized ladle for metal casting |
| 10/21/1999 | WO1999052835A1 Method for preventing consolidation of blast furnace granulated slag and consolidation preventing system |
| 10/19/1999 | US5968230 Method and furnace for disposal of steel-making waste, and operating method of the furnace |
| 10/07/1999 | WO1999050600A1 Ash melting furnace and ash melting method thereof |
| 09/25/1999 | CA2261173A1 Treatment of steel mill waste metal oxides |
| 09/15/1999 | CN1228478A Boron-magnesium compound additives and preparing method thereof |
| 09/01/1999 | EP0938591A1 Steel slag and ferriferous material reprocessing process useful to produce pig iron and environmentally compatible slags |
| 08/31/1999 | US5944870 Method of manufacturing pig iron or steel and cement clinker from slags |
| 08/31/1999 | US5944861 Process control; forming lightweight solid |
| 08/26/1999 | WO1999042623A1 Method for granulating and grinding liquid slag and device for realising the same |
| 08/26/1999 | WO1999042236A1 System and method for the continuous solidification and/or granulation of molten materials with heat pipe drums |
| 08/26/1999 | CA2324149A1 System and method for the continuous solidification and/or granulation of molten materials with heat pipe drums |
| 08/18/1999 | EP0815266B1 Method of processing burnt rubbish residues |
| 08/17/1999 | US5938815 Supplying mixture of ore, oxygen gas, carbon to secondary reactor for low temperature partial reduction of ore to form calorific gas products, further reduction of hot solids in primary reactor at higher temperature; thermal efficiency |
| 08/11/1999 | EP0934432A1 METHOD OF DE-CHROMING AND/OR DEPLETING THE MgO CONTENT OF STEEL SLAG |
| 07/28/1999 | CN1224064A Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases |
| 07/07/1999 | CN2327691Y Large tooth ring for slag treating device by rolling cylinder process |
| 07/07/1999 | CN2327690Y Apparatus for cooling steel balls for slag treating device by rolling cylinder process |
| 06/16/1999 | EP0922679A1 Method of foaming material, especially slag or glass |
| 06/11/1999 | CA2255044A1 Method for the foaming of material, in particular slag or glass |
| 06/10/1999 | WO1999028513A1 Device and process system for preheating steel scrap |
| 05/06/1999 | WO1999022031A1 Method for granulating and grinding molten material and device for carrying out said method |
| 05/06/1999 | EP0913486A1 Process and device for granulating and crushing molten materials |
| 05/06/1999 | CA2276083A1 Method for granulating and grinding molten material and device for carrying out said method |
| 05/05/1999 | CN1043244C Method for production of pig iron or steel and cement clinker from slag |
| 05/04/1999 | CA2075794C Treatment of wastes |
| 04/29/1999 | DE19746852A1 Ultrasonic treatment of zinc-containing steelworks filter dusts prior to magnetic separation |
| 04/21/1999 | CN2315121Y Slag granulating device for steelmaking by convertor |
| 04/21/1999 | CN2315120Y Roller seat regulator for sludge treating device by roller method |
| 04/14/1999 | EP0907755A1 Method of continuously producing vitreous blast furnace slag |
| 04/13/1999 | CA2156824C Method and apparatus for combustion of steel plant wastes |
| 03/25/1999 | WO1999014381A1 Steel slag and ferriferous material reprocessing process useful to produce pig iron and environmentally compatible slags |
| 03/25/1999 | CA2271489A1 Steel slag and ferriferous material reprocessing process useful to produce pig iron and environmentally compatible slags |
| 03/16/1999 | US5882576 Insulating cover for torpedo cars |
| 03/16/1999 | US5882375 From basic steel slags containing chromium and/or vanadium |
| 03/03/1999 | CN1042347C 生产铁的方法 Production of iron approach |
| 03/02/1999 | US5876483 Method and furnace for disposal of steel-making waste, and operating method of the furnace |
| 02/24/1999 | CN2308605Y Converting slags granulating device |
| 02/24/1999 | CN1042238C Combustion adjuvant method of blowing coal powder into blast furnace |
| 02/03/1999 | CN1207060A Lightweight compact waste treatment furnace |
| 02/02/1999 | US5865872 Method of recovering metals and producing a secondary slag from base metal smelter slag |
| 01/20/1999 | EP0770149B1 Process for producing hydraulic binders and/or alloys, e.g. ferrochromium or ferrovanadium |
| 12/23/1998 | WO1998057903A1 Process for making expanded slag |
| 12/23/1998 | EP0885973A1 Process for agglomeration of liquid slag from a steelmaking process |
| 12/09/1998 | CN1201413A Production of metal lumps |
| 12/03/1998 | WO1998054103A1 Apparatus for and process of water granulating matte or slag |
| 11/25/1998 | EP0632841B1 Process for producing pig iron and cement clinker |
| 11/25/1998 | CN1199778A Metallurgical slag granulator |
| 11/18/1998 | EP0877827A1 Method for processing a powdery material, and apparatus therefor |
| 11/04/1998 | CN1198189A Method for making pozzolans, synthetic blast-furnace slag, Belite or Alite clinkers and pig-iron alloys from oxidic slag and device for implementig this method |
| 11/04/1998 | CN1040553C Method for treating blast furnace slag with diluted hydrochloric acid |
| 10/14/1998 | CN1040229C Process for producing pig iron and cement clinker |
| 10/13/1998 | US5820814 Method and apparatus for cooling and solidifying red-hot molten blast furnace slag |
| 09/16/1998 | EP0864658A1 Refining iron ore |
| 07/22/1998 | CN1188153A Process for treatment of slag and scum and its application method |
| 07/15/1998 | EP0852692A1 Method of melting oxidic slags and combustion residues, and device for carrying out this method |
| 06/24/1998 | EP0848655A1 The production of metal lumps |
| 06/16/1998 | US5765489 Process for the treatment of solid residue from refuse incineration plants, and apparatus for performing the process |
| 06/10/1998 | CN1038694C Process for producing an iron melt |
| 06/03/1998 | CN1038602C Slag granulation method and device |
| 05/20/1998 | EP0842302A1 Slag treatment |
| 05/20/1998 | EP0842301A1 Method for making pozzolans, synthetic blast-furnace slag, belite or alite clinkers, and pig-iron alloys, from oxidic slag, and a device for implementig this method |
| 05/14/1998 | WO1998020181A1 Process for plasma spraying ceramic residues |
| 05/12/1998 | US5749962 Method of making cement from base metal smelter slag |
| 05/07/1998 | DE19645254A1 Treatment of metallurgical slag and utilisation of its heat content |
| 04/30/1998 | WO1998017832A1 METHOD OF DE-CHROMING AND/OR DEPLETING THE MgO CONTENT OF STEEL SLAG |
| 04/29/1998 | CN1038198C Method for recoverying sensible heat of iron and steel slag |
| 04/07/1998 | US5735931 Using a rotary atomizer |
| 04/01/1998 | CN1037903C Steel-smelting furnace slag processing technology and equipment thereof |
| 03/25/1998 | CN1037858C A. Edlinger (CH) |
| 03/19/1998 | WO1998010838A1 Apparatus for dissociating bulk waste in a molten metal bath |
| 03/18/1998 | EP0829550A1 Method of processing incineration residues in a multi-stage metal bath converter |
| 03/17/1998 | CA2215262A1 Process for working up combustion residues |
| 03/11/1998 | CN1037677C Method for treating slag from steel-smelting |
| 02/19/1998 | DE19632698A1 Fine grained slag sand production |
| 02/11/1998 | EP0687349B1 Method and apparatus for combustion of steel plant wastes |
| 02/05/1998 | WO1998004878A1 Method of melting oxidic slags and combustion residues, and device for carrying out this method |
| 02/05/1998 | DE19630742A1 Dry grinding method for inert blast furnace slag |
| 02/05/1998 | CA2232610A1 Method of arrangement for melting oxidic slags and combustion residues |
| 01/28/1998 | EP0820532A1 Process for the separation of copper and heavy metals from incinerated garbage residue and slag |
| 01/07/1998 | EP0815272A1 Method of producing pig iron, alloys of ferrous metal and/or nonferrous metal with synthetic blast furnace slag from residues of incinerated waste and steelworks slag |
| 01/07/1998 | EP0815266A1 Method of processing burnt rubbish residues |
| 01/02/1998 | DE19624428A1 Pozzolana, synthetic slag, clinker and pig iron production |
| 12/24/1997 | WO1997048826A1 Method of recovering metals from slags |
| 12/24/1997 | CA2258147A1 Method of recovering metals from slags |