Flotation process using metal salts of phosphorus acids
US5082554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1990 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Jun 15, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to improved process for beneficiating an ore-containing sulfide material. In particular, the process is useful for beneficiating ores and recovering metals such as gold, copper, lead, molybedenum, zinc, etc., from the ores. In one embodiment, the process comprises the steps of: PA0 (1) forming a slurry comprising at least one crushed mineral-containing ore, water and a collector which is at least one metal salt of a phosphorus acid represented by the Formula: ##STR1## wherein each R.sub.1 is independently a hydrocarbyl, hydrocarbyloxy or hydrocarbylthio group having from 1 to about 18 carbon atoms, each X is independently oxygen or sulfur, and wherein the metal is i) at least one single metal having a lowest oxidation state of plus two or ii) at least one mixture of metals wherein at least one of the metals has a lowest oxidation state of plus two, provided that when the primary mineral is copper, zinc or silver, the metal (i) is other than zinc. PA0 (2) subjecting the slurry from step (1) to froth flotation to produce a froth; and PA0 (3) recovering a mineral from the froth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.