| Patents for C21B 3 - General features in the manufacture of pig-iron (3,260) |
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| 05/31/1995 | CN2199214Y Combined steel slag pot |
| 05/18/1995 | DE4331159C1 Utilisation of waste products in the mfr. of additives for metal casting industries |
| 05/18/1995 | DE4331156C1 Electroplating sludge use in mfr. of additives for metal casting industries |
| 05/03/1995 | EP0650384A1 Treatment of polyvinylchloride. |
| 05/02/1995 | US5411572 Method for utilizing smelter waste containing zinc and other valuable metals |
| 04/26/1995 | CN1101947A Method for recovering Fe-and V-slag from molten Fe containing V |
| 04/25/1995 | US5409521 Slag granulation |
| 04/19/1995 | CN1101786A Process for producing pig iron and cement clinker |
| 04/19/1995 | CN1101785A Process for producing cement from metallurgical slag |
| 03/30/1995 | WO1995008649A1 Transport of metal and slag melts in the melting industry |
| 03/29/1995 | CN2193362Y Steel slag water quenching air-water jetting granulating device |
| 03/29/1995 | CN1028015C Process and equipment for treating slag of revolving furnace |
| 03/16/1995 | WO1995007365A1 Process for making steel and hydraulically active binders |
| 03/16/1995 | CA2148226A1 Process for making steel and hydraulically active binders |
| 03/08/1995 | EP0641394A1 Oxygen smelting. |
| 03/08/1995 | CN1027820C Process for treatment of steel-mill slag installation for earrying it out and slag obtained by process |
| 03/07/1995 | US5395601 Re-calcination and extraction process for the detoxification and comprehensive utilization of chromic residues |
| 03/07/1995 | US5395443 Method for preparing a cement base material, together with a cement composition containing this base material |
| 03/01/1995 | CN1099424A Method for treating blast furnace slag with diluted chlorhydric acid |
| 03/01/1995 | CN1099417A Iron-smelting process |
| 02/23/1995 | WO1995005485A1 Slag granulation |
| 02/22/1995 | CN1099069A Method for recovery from iron and steel slag |
| 02/08/1995 | CN1098388A Method for treating slag produced from steel-smelting |
| 02/01/1995 | EP0636699A2 Thermal reclamation method for the recovery of metals from air bag inflators |
| 02/01/1995 | EP0636697A1 Apparatus for water-granulating slag |
| 01/18/1995 | CN1097469A Granulation method and device |
| 01/17/1995 | US5382279 Method and apparatus for combustion of steel plant wastes |
| 01/11/1995 | EP0632841A1 Process for producing pig iron and cement clinker |
| 01/11/1995 | EP0632791A1 Process for producing cement from metallurgical slag. |
| 12/31/1994 | CA2127017A1 Apparatus for water-granulating slag |
| 11/30/1994 | CN1026796C Complex hot heating treatment for lump steel slag |
| 11/15/1994 | US5364441 Cotreatment of sewage and steelworks wastes |
| 10/13/1994 | DE4311769A1 Process for clearing and disposing of waste landfills |
| 10/12/1994 | CN2179384Y Water power flushing blast furnace slag and unit for recovery of iron sand |
| 10/05/1994 | EP0618419A1 Process and device for the disposal of dust in a cupola by combustion/slag production |
| 10/03/1994 | CA2120079A1 Dust injection via an oxy-fuel burner into the melting zone of a cupola furnace |
| 09/20/1994 | US5348696 Integrated lunar materials manufacturing process |
| 08/04/1994 | WO1994017214A1 Process for producing pig iron and cement clinker |
| 08/03/1994 | EP0608695A1 Method for utilizing smelter waste containing zinc and other valuable metals |
| 07/27/1994 | WO1994017006A1 Process for producing cement from metallurgical slag |
| 07/13/1994 | EP0605472A1 Slag granulation. |
| 07/06/1994 | EP0605378A1 Method of valorizing the slag of a steelmaking electric furnace |
| 06/01/1994 | CN1087299A Raw material for producing ferrite dust for friction elements and method of reducing the same |
| 04/26/1994 | US5305990 Metallurgical furnace vacuum slag removal |
| 03/15/1994 | US5294244 Heating the air bag in a furnace and removing the nonaluminum parts prior to reaching the melting point of the aluminum |
| 03/15/1994 | US5294243 Continuous monitoring of slag content and viscosity; adjustment with fluxing agent and glass or gravels |
| 02/24/1994 | DE4327124A1 Environmentally-friendly slag cooling appts. - with a positionally adjustable compressed air nozzle unit |
| 02/03/1994 | WO1994002210A1 Treatment of polyvinylchloride |
| 02/03/1994 | DE4325531A1 Reduced ferrite powder for vehicle brake system friction elements - includes oxide(s) of silicon, magnesium, calcium, aluminium and zinc. |
| 02/02/1994 | EP0580693A1 Trap trench. |
| 01/19/1994 | EP0579309A2 Method for preparing a cement base material, and cement composition containing this base material |
| 01/18/1994 | US5279643 Agglomeration with aluminum refining sludge; reduction, separation |
| 01/15/1994 | CA2100125A1 Method for preparing a cement base material, together with a cement composition containing this base material |
| 01/12/1994 | CN1080621A Steel smelting furnace slag treating process and equipment |
| 01/05/1994 | CN2151984Y Long life slag pot, cauldron or basin |
| 12/15/1993 | EP0573769A1 Desulphurisation process for gases formed during the granulation of blast furnace slag |
| 12/09/1993 | WO1993024666A1 Oxygen smelting |
| 12/09/1993 | CA2136425A1 Oxygen smelting |
| 12/03/1993 | CA2096693A1 Process for treating a mixture of water vapors and polluted air with sulphidic gases, formed by the dehydration of the blast furnace slag |
| 11/18/1993 | EP0569882A1 Concrete product using aggregates obtained by pulverizing melt slugs and the method of fabricating the same |
| 10/26/1993 | US5255900 Method and a device for processing hot, liquid slags |
| 09/30/1993 | DE4227568A1 Reclamation of chromium@, PCB and plastics from discarded computers - by direct and indirect heating in a blast furnace with removal and, if necessary destruction of components at different temps. |
| 09/28/1993 | US5248420 Apparatus for dewatering slag sand |
| 08/26/1993 | DE4205096A1 Solid and liq. waste recovery - comprises adding dry matter contg. top gas dust to homogenised mixt. for thermal processing |
| 08/25/1993 | EP0556409A1 Vessel for molten slag, and method and device for making hard aggregate from waste using said vessel |
| 08/05/1993 | WO1993014862A1 Treatment of gases discharged from metallurgical furnaces |
| 07/20/1993 | US5229063 Process for the treatment of steel-mill slag and apparatus for carrying it out |
| 07/18/1993 | CA2086857A1 Process for recovering valuable metals from an iron dust |
| 06/30/1993 | EP0548182A1 Metal-melting furnaces. |
| 06/16/1993 | CN1073210A Complex hot heating treatment for lump steel slag |
| 04/14/1993 | EP0537131A1 Process for conditioning the composition of slags |
| 04/01/1993 | WO1993006250A1 Slag granulation |
| 03/23/1993 | US5196072 Carbon dioxide and oxygen, pollution control |
| 03/18/1993 | WO1993004994A1 Vessel for molten slag, and method and device for making hard aggregate from waste using said vessel |
| 03/17/1993 | EP0515498A4 Cotreatment of sewage and steelworks wastes |
| 03/10/1993 | CN1069769A comprehensive utilization of blast furnace waste |
| 02/16/1993 | US5187126 Sintered and/or vitrified slag additive containing silica, boron oxide, alkali and alkaline earth oxides, for iron or steel furnaces |
| 12/22/1992 | US5173244 Slag control apparatus and method |
| 12/09/1992 | CN1066887A Dephosphorization in cupola |
| 12/02/1992 | EP0515498A1 Cotreatment of sewage and steelworks wastes. |
| 11/19/1992 | EP0513367A1 Spherical hydraulic substance and production thereof |
| 10/29/1992 | WO1992018268A1 Trap trench |
| 10/14/1992 | EP0508697A1 A re-calcination and extraction process for the detoxification and comprehensive utilization of chromic residues |
| 10/06/1992 | CA1308262C Method and apparatus for reclaiming metal values from electric arc furnace flue dust and sludge and rendering residual solids recyclable or non-hazardous |
| 09/23/1992 | CN1064706A Process for treatment of steel-mill slag, installation for carrying it out and slag obtained by process |
| 09/02/1992 | EP0501173A1 Process and apparatus for treating steel-making slags |
| 09/02/1992 | CA2062168A1 Process for the treatment of steel mill slag, installation therefor, and slag obtained with such process |
| 06/30/1992 | US5125966 Slurrying with water and surfactant, high shear agitation to form emulsion, separation of solids |
| 06/17/1992 | EP0490743A2 Method for controlling metal oxide fume generation during the oxygen-induced subdivision of a body containing metal values |
| 06/13/1992 | CA2057457A1 Method and apparatus for controlling metal oxide fume generation during the oxygen-induced subdivision of a body containing metal values |
| 06/04/1992 | DE4038213A1 Joint sealing and fracture prevention in molten metal vats - vertical joints have interlocking curved faces, wave-shaped connecting flanges, specially shaped ribs and different dia. in upper and lower parts |
| 05/19/1992 | US5114474 Arrangement and method for introducing waste material into a molten slag |
| 05/15/1992 | CA2029939A1 Use of synthetic olivine in the production of iron ore sinter |
| 05/14/1992 | WO1992007964A1 A method of recirculating fine waste products |
| 05/06/1992 | WO1992007803A1 Spherical hydraulic substance and production thereof |
| 05/06/1992 | CA2073170A1 Spherical hydraulic substance and production thereof |
| 04/29/1992 | CN1060681A Blast furnace producing active slag by gangue |
| 03/19/1992 | WO1992004587A1 Metal-melting furnaces |
| 03/03/1992 | CA1296524C Slag retaining device with vortex inhibitor |
| 02/20/1992 | WO1992002644A1 Slag control apparatus and method |