Method for melting and reducing chrome ore
US4783219A · kind A · utility
5Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1986 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Nov 10, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B5/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for melting and reducing chrome ore, which comprises charging chrome ore and carbonaceous material, and blowing in oxygen gas under a pressure ranging from 1 to 600 Torr, while molten metal is being stirred by a stirring gas blown in. In this method, a reaction vessel capable of allowing top blowing and bottom blowing onto the molten metal and decreasing pressure within the vessel is employed. Chrome ore and carbonaceous material can be used in the form of lumps or powder. When powdered ore and material are used, they can be injected through a lance or a tuyere into the vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.