| Patents for C21B 3 - General features in the manufacture of pig-iron (3,260) |
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| 12/16/1997 | US5698759 Treatment of polyvinylchloride |
| 12/11/1997 | WO1997046717A1 Method for making pozzolans, synthetic blast-furnace slag, belite or alite clinkers, and pig-iron alloys, from oxidic slag, and a device for implementing this method |
| 12/10/1997 | EP0811577A1 Beneficiation of kish graphite |
| 12/09/1997 | US5695543 Method for metal reduction of steel waste products |
| 12/02/1997 | US5694480 Molten slag flow rate measuring device and furnace facilities using the same |
| 11/20/1997 | WO1997043455A1 Method of continuously producing vitreous blast furnace slag |
| 11/05/1997 | EP0804620A1 Slag granulation |
| 10/15/1997 | EP0801136A1 Process for reducing oxidic slags or refuse incinerator ashes on a bath of molten iron alloy |
| 09/16/1997 | US5667553 Methods for recycling electric arc furnace dust |
| 09/16/1997 | US5667147 Blast furnace slags |
| 08/19/1997 | US5658545 Air pollution control |
| 08/14/1997 | WO1997029214A1 Process for the separation of copper and heavy metals from incinerated garbage residue and slag |
| 08/14/1997 | CA2216714A1 Process for the separation of copper and heavy metals from incinerated garbage residue and slag |
| 08/13/1997 | CN1157010A Process for producing hydraulic binders and/or alloys, E.G. ferrochromium or ferrovanadium |
| 08/07/1997 | WO1997028287A1 Method for processing a powdery material, and apparatus therefor |
| 07/31/1997 | WO1997027339A1 Method of processing burnt rubbish residues |
| 07/31/1997 | CA2216156A1 A process for processing waste incineration residues |
| 07/30/1997 | EP0786532A2 Briquette containing silicious residual matter, useful as additive for metallurgical purposes and process for the manufacture thereof |
| 07/24/1997 | WO1997026381A1 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 |
| 07/24/1997 | CA2214079A1 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 |
| 07/01/1997 | US5643529 Thermal insulation cover for molten metal transfer car |
| 06/19/1997 | WO1997021500A1 Lightweight compact waste treatment furnace |
| 06/12/1997 | WO1997020624A1 Device for granulating molten metals and slags |
| 05/06/1997 | US5626646 Method of recovering metals and producing a secondary slag from base metal smelter slag |
| 05/02/1997 | EP0770149A1 Process for producing hydraulic binders and/or alloys, e.g. ferrochromium or ferrovanadium |
| 04/23/1997 | EP0632791B1 Process for producing cement from metallurgical slag |
| 04/23/1997 | CN1148409A A. Edlinger (CH) |
| 04/02/1997 | EP0666930B1 Process for making steel and hydraulically active binders |
| 04/02/1997 | EP0605472B1 Slag granulation |
| 03/13/1997 | WO1997009145A1 The production of metal lumps |
| 03/11/1997 | US5609919 Atomization of metals, alloys, ceramics, slags, applying impulses to fluid to impel it through an opening |
| 03/04/1997 | US5607495 Oxygen smelting of copper or nickel sulfides |
| 02/13/1997 | WO1997005289A1 Slag treatment |
| 02/12/1997 | EP0757666A1 Metallurgical furnace vacuum slag removal |
| 01/28/1997 | US5597528 Impact pad |
| 01/22/1997 | EP0754245A1 Method of manufacturing pig iron or steel and cement clinker from slags |
| 01/15/1997 | EP0650384B1 Treatment of polyvinylchloride |
| 01/14/1997 | US5593493 Method of making concrete from base metal smelter slag |
| 12/27/1996 | CA2178672A1 Method of making concrete from base metal smelter slag |
| 12/12/1996 | DE19520651A1 Utilisation of clarifier and waterworks sludge |
| 12/11/1996 | CN2242247Y Dewatering drum for treating blast furnace slag |
| 11/20/1996 | EP0641394B1 Oxygen smelting |
| 11/14/1996 | DE19517603A1 Converting wet clarified sludge into useful prods. such as fuel, fertiliser or building material |
| 11/07/1996 | WO1996034989A1 Process for producing hydraulic binders and/or alloys, e.g. ferrochromium or ferrovanadium |
| 11/06/1996 | EP0556409B1 Vessel for molten slag, and method and device for making hard aggregate from waste using said vessel |
| 10/23/1996 | EP0542825B1 Slag control apparatus and method |
| 10/03/1996 | WO1996030299A1 Method of regeneration of iron chelates in nitric oxide scrubbing |
| 09/17/1996 | US5556457 Recovery of steel plant revert materials through cementitious agglomeration |
| 09/17/1996 | US5555822 Apparatus for dissociating bulk waste in a molten metal bath |
| 08/22/1996 | DE19522320C1 Cooling and solidifying red hot molten blast furnace slag in metallurgy |
| 08/15/1996 | WO1996024696A1 Method of manufacturing pig iron or steel and cement clinker from slags |
| 08/01/1996 | DE19519284C1 Disposal of ladle and converter slag |
| 07/30/1996 | US5540895 Device for the treatment of mixture of steam and air contaminated with sulphurous gases, formed during the granulation and dehydration of blast furnace slag |
| 07/30/1996 | US5540771 Concrete product using aggregates obtained by pulverizing melt slags and the method of fabricating the same |
| 07/23/1996 | US5538532 Methods for recycling electric arc furnace dust |
| 07/16/1996 | US5536378 Apparatus for manufacture of oxygen from lunar ilmenite |
| 07/02/1996 | US5531805 Mixing with sewage sludge carbon material; pelletization, chemical reduction, and carburization |
| 06/19/1996 | EP0548182B1 Metal-melting furnaces |
| 06/12/1996 | EP0716153A1 Method and furnace for disposal of steel-making waste, and operating method of the furance |
| 06/12/1996 | EP0513367B1 Spherical hydraulic substance and production thereof |
| 06/05/1996 | EP0714860A1 Method for preparing the residues from an apparatus for burning waste products and apparatus used therefor |
| 05/26/1996 | CA2163847A1 Process for the treatment of solid residues from refuse incineration plants, and apparatus for applying the process |
| 05/14/1996 | US5516357 Process for producing cement from metallurgical slag |
| 05/07/1996 | US5514203 Adding quicklime binder and coal dust to dehydrated sludge, granulation, charging to melting/gasification zone while increasing basicity of slag |
| 04/23/1996 | CA1338254C Fluidizing a lime-silica slag |
| 04/18/1996 | WO1996011286A1 Method for the wet granulation of slag |
| 04/04/1996 | DE4434939A1 Use of breakable materials for refractory linings and slag beds |
| 03/26/1996 | US5501721 Fusion gasifier |
| 02/21/1996 | CN1117083A Process for producing an iron melt |
| 01/24/1996 | CN1115580A Process for making steel and hydraulically active binders |
| 01/24/1996 | CN1115302A Method for extracting B from B slag |
| 01/23/1996 | US5486229 Raw material for producing ferrite dust for friction elements and method of reducing the same |
| 12/20/1995 | EP0687349A1 Method and apparatus for combustion of steel plant wastes |
| 12/13/1995 | EP0686700A2 Titanium containing additive and its use for increasing the durability of a furnace refractory lining or as a slag former |
| 11/29/1995 | EP0683824A1 Process and device for granulating and crushing molten materials and grinding stocks |
| 11/22/1995 | CN1112163A Combustion adjuvant and adding method for sprayed coal powder of blast furnace |
| 11/15/1995 | EP0580693B1 Trap trench |
| 11/08/1995 | CN2212012Y Hydraulic tilting device for slag tank |
| 11/02/1995 | WO1995029137A1 Metallurgical furnace vacuum slag removal |
| 10/19/1995 | CA2142412A1 Coatings for receptacles |
| 10/11/1995 | EP0676478A1 Process for producing an iron melt |
| 10/10/1995 | CA1337242C Process for the detoxification of steel plant wastes |
| 09/13/1995 | CN1108307A Method and apparatus for producing iron |
| 08/23/1995 | EP0515498B1 Cotreatment of sewage and steelworks wastes |
| 08/23/1995 | CN1107180A Slag foam eliminating agent |
| 08/16/1995 | EP0666930A1 Process for making steel and hydraulically active binders. |
| 08/15/1995 | US5441205 Apparatus for water-granulating slag |
| 08/08/1995 | US5439202 Apparatus for removing a cover from a hot metal transfer car |
| 08/01/1995 | US5437890 Slurry of slag fines, lime and water |
| 07/25/1995 | US5435526 Collecting pit |
| 07/13/1995 | WO1995018940A1 Method and apparatus for combustion of steel plant wastes |
| 07/12/1995 | CN2203305Y Fast Slagging-off device |
| 06/29/1995 | DE4419816C1 Titanium-contg. additive used in refractory linings and as a slagging agent |
| 06/15/1995 | WO1995015929A1 Slag granulation method and container by air crushing |
| 06/14/1995 | EP0657550A1 Method and apparatus for producing iron |
| 06/14/1995 | CN1103667A Air breaking and pelletizing technology and apparatus for slag |
| 06/14/1995 | CA2136692A1 Method and apparatus for producing iron |
| 06/08/1995 | WO1995015402A1 Process and device for granulating and crushing molten materials and grinding stocks |
| 06/08/1995 | CA2154653A1 Process and device for granulating and crushing molten materials and grinding stocks |
| 06/07/1995 | CN1103484A Apparatus for water-granulating slag |