Beneficiation of calcium borate minerals
US5238119A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Jul 2, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Particles of a calcium borate mineral, such as colemanite or ulexite, are recovered from an ore by a froth flotation process using a dialkyl sulfosuccinate as collector. Suitable dialkyl sulfosuccinates include sodium or ammonium dinonyl sulfosuccinate, sodium or ammonium di-isodecyl sulfosuccinate, and sodium or ammonium dialauryl sulfosuccinate. The dialkyl sulfosuccinates may be used as aqueous solutions or as solutions in solvents consisting of water and methylated spirit, a dihydric alcohol such as ethylene glycol or hexylene glycol or a monohydric alcohol containing more than 5 carbons. Preferred collectors are the dinonyl sulfosuccinate salts, such as a compound of the formula, ##STR1## wherein X.sup.+ is a counterion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.