| Patents for C21B 11 - Making pig-iron other than in blast furnaces (2,381) |
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| 08/31/1983 | EP0087405A1 Process and device for the reduction of particle-sized ores containing oxide |
| 08/23/1983 | US4399983 Apparatus for the production of liquid iron, especially for directly producing liquid iron from ore |
| 08/09/1983 | US4397691 Method for producing Fe-B molten metal |
| 08/02/1983 | US4396421 Low-energy input by using plasma arcs to heat fluidized bed |
| 07/27/1983 | EP0084288A1 Method and apparatus for the direct production of liquid iron |
| 07/19/1983 | US4394163 Reduction, electric arcs |
| 07/19/1983 | US4394162 Alloying, benefication |
| 06/28/1983 | CA1148744A1 Impact bed gasifier-melter |
| 04/19/1983 | US4380469 Gasification coal |
| 04/05/1983 | CA1144104A1 Treatment of matter in low temperature plasmas |
| 03/29/1983 | US4378243 Process control for distribution of reducing agent using low pressure air in pipe |
| 11/30/1982 | US4361441 Treatment of matter in low temperature plasmas |
| 10/27/1982 | EP0063532A1 Method and process for the instantaneous production of liquid iron |
| 10/05/1982 | CA1132800A1 Process and apparatus for producing liquid crude iron and reduction gas |
| 10/05/1982 | CA1132799A1 Weight ratio mixing of volatile containing carbonaceous materials, etc. |
| 07/27/1982 | US4341553 Method of, and cupola furnace for, the introduction of treatment agents into cupola iron melts |
| 07/20/1982 | US4340207 Waste heat recovery apparatus |
| 03/02/1982 | US4317677 Process for producing liquid crude iron and reduction gas |
| 01/19/1982 | CA1116407A1 Process and apparatus for melting cast iron borings |
| 01/13/1982 | EP0043373A1 Process and device for continuous reduction and melting of metal oxides and/or prereduced metal materials. |
| 12/08/1981 | US4304595 Method of manufacturing crude iron from sulphidic iron-containing material |
| 11/17/1981 | CA1112456A1 Method of manufacturing crude iron from sulphidic iron-containing material |
| 10/14/1981 | EP0037809A1 Method of and arrangement for producing molten pig iron or steel prematerial |
| 10/13/1981 | US4294610 Foundry coke |
| 10/13/1981 | CA1110454A1 Method and apparatus for reducing particulate iron oxide to molten iron with solid reductant |
| 09/23/1981 | EP0036382A1 Process and apparatus for producing liquid iron |
| 09/15/1981 | CA1108852A1 Waste heat recovery process |
| 09/08/1981 | CA1108399A2 Method and appartatus for reducing particulate iron oxide to metallic iron with solid reductant |
| 06/25/1981 | WO1981001715A1 Process and device for continuous reduction and melting of metal oxides and/or prereduced metal materials |
| 03/24/1981 | US4257579 Waste heat recovery process and apparatus |
| 02/24/1981 | US4252559 Process for processing cast iron suitable for foundry moulding |
| 12/09/1980 | US4238632 Arc furnace for making steel from directly reduced iron |
| 12/09/1980 | CA1091041A1 Production of metals |
| 11/26/1980 | EP0019362A1 Method and apparatus for the treatment of matter with low temperature plasma |
| 11/25/1980 | US4235425 Impact bed gasifier-melter |
| 05/20/1980 | US4203761 Process of smelting with submerged burner |
| 05/20/1980 | CA1077723A1 Method of producing a partially reduced product |
| 05/14/1980 | EP0010627A1 Method and apparatus for making liquid pig iron and reducing gas in a smelting down and gasification vessel |
| 04/15/1980 | CA1075469A1 Process for pyrometallurgical recovery of iron from iron silicate slags |
| 04/08/1980 | CA1075011A1 Method and means for remelting scrap iron, iron sponge, pellets or the like |
| 01/15/1980 | CA1069699A1 Producing hot reducing gas |
| 01/01/1980 | US4181812 Iron oxide melt reduction furnace and method |
| 12/18/1979 | US4179283 Reduction of the metal oxides with a carboneous material |
| 12/11/1979 | CA1067702A1 Low cost method of fluidizing cupola slag (b) |
| 11/06/1979 | CA1065794A1 Method of reducing ores |
| 10/23/1979 | US4171971 From iron oxide or pig iron in a shaft furnace |
| 07/24/1979 | US4162156 Slag-free |
| 05/29/1979 | CA1055553A1 Extended arc furnace and process for melting particulate charge therein |
| 03/06/1979 | CA1049792A1 Process and apparatus for producing molten iron |
| 02/27/1979 | CA1049266A1 Process for the direct reduction of metal oxides |
| 02/20/1979 | US4140480 Hot cupola gas burner |
| 02/08/1979 | WO1979000058A1 A method of manufacturing crude iron from sulphidic ironcontaining material |
| 12/05/1978 | CA1043574A1 Method and apparatus for producing iron from oxidic iron ores |
| 10/24/1978 | CA1040863A1 Process for the production of molten metal |
| 06/27/1978 | US4097028 Method of melting and apparatus therefor |
| 05/02/1978 | US4087274 Method of producing a partially reduced product from finely-divided metal sulphides |
| 04/11/1978 | US4083715 Iron-scale deposit, protective coating |
| 03/21/1978 | US4080511 Direct current electric arc furnace |
| 03/21/1978 | US4080195 Melt reduction of iron ore |
| 03/14/1978 | US4079185 Direct current arcing electrodes |
| 02/28/1978 | US4076954 Chemical reduction, smelting |
| 02/07/1978 | US4072504 Method of producing metal from metal oxides |
| 01/31/1978 | US4071687 Electric arc furnace for continuous melting of directly reduced iron or directly reduced iron ore |
| 07/05/1977 | US4033562 Furnace for melting solid ferrous pieces |
| 04/26/1977 | US4019895 Method of reducing ore using a plasma burner |
| 02/01/1977 | US4006284 Extended arc furnace and process for melting particulate charge therein |
| 01/25/1977 | US4004918 Kneading sludge cakes, binders, reduction |
| 01/11/1977 | US4002466 Method of reducing ores |
| 01/11/1977 | US4002465 Process for continuously heating and melting prereduced iron ores |
| 01/04/1977 | US4001011 Pyrometallurgical recovery of iron from iron silicate slags |
| 11/02/1976 | US3989513 Method for the treatment of red mud |
| 10/12/1976 | US3985546 Method of fluidizing acid cupola slag |
| 10/12/1976 | US3985544 Method for simultaneous combined production of electrical energy and crude iron |
| 08/24/1976 | US3976472 Method and an electrically heated device for producing molten metal from powders or lumps of metal oxides |
| 05/11/1976 | US3955963 Method of reducing ore |
| 04/27/1976 | US3953196 By carbonaceous material in a shaft furnace |
| 04/06/1976 | US3948647 Method of melting solid iron in a gas cupola |
| 03/30/1976 | US3947621 Furnace and method for reducing metal oxides to molten metal |
| 03/09/1976 | US3942978 Metallurgical method |
| 02/24/1976 | US3940551 Apparatus and method for the melt reduction of iron oxides |
| 01/13/1976 | US3932173 Inductially heated gas lift pump action method for melt reduction |