Iron or steelmaking process
US4062674A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Nov 11, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B2007/3258
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An iron or steelmaking process is described wherein iron or steelmaking materials are injected into one end of a generally horizontal rotary furnace rotatable at such a speed that the furnace contents are maintained around the interior by centrifugal force in an outer liquid metal layer and an inner slag layer spread on the liquid metal. The process comprises intermittently reducing the speed of rotation of the furnace to reduce the centrifugal force and permit liquid metal to be discharged from that end of the furnace remote from the input end in preference to the slag. Various means are described for accentuating the preferential discharge of liquid metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.