Hydrometallurgical process for the production of antimony
US3986943A · kind A · utility
3Cited by
3References
45Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 1975 |
| Grant date | Oct 19, 1976 |
| Priority date | — |
| Expiry date | May 27, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B1/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hydrometallurgical process for pollution-free recovery of metallic antimony from stibnite and other antimony-containing materials by (a) reduction of ferric chloride by such materials to produce ferric chloride and antimony (III) chloride, (b) recovery of metallic antimony, preferably by electrolysis, (c) regeneration of the ferric chloride, and (d) purge of impurities. Optionally, the metallic antimony thus produced may be subsequently oxidized if desired to produce high purity antimony oxide. The process is amenable to cyclical operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.