Method of operating a blast furnace with plasma heating
Patent 4707183 Issued on November 17, 1987. Estimated Expiration Date: 
November 21, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 21, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1917642 Method of reducing ore Method of manufacturing stainless steel Increasing blast temperature Method of producing molten metal Method of manufacturing ferrosilicon Patent #: 4526612 InventorsAssigneeApplicationNo. 06/800465 filed on 11/21/1985US Classes:75/10.22, Producing or treating Iron(Fe) or Iron alloy266/82Correlated flow of diverse fluentsExaminersPrimary: Andrews, MelvynAttorney, Agent or FirmInternational ClassesC21B 5/02 (20060101)C21B 5/00 (20060101) Foreign Application Priority Data1984-11-21 FRAbstractA blast furnace, especially for the production of hot metal for the steel industry and operated with a normal charge above the tuyere blast zone, has its hot metal production increased at least temporarily by a lateral injection of metal oxides into the zone. A supply of the thermal energy requirements for the smelting reduction of these metal oxides by electrically operated plasma torches, and the compensation of a overoxygenation resulting from the oxygen contribution of these metal oxides by the introduction of nitrogen. | |
