Process of purification of minerals based on calcium carbonate by flotation in the presence of quaternary imidazolium methosulfate
US8381915B2 · kind B2 · utility
1Cited by
5References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2008 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Apr 3, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a process for purification of calcium carbonate-comprising minerals comprising at least one flotation step, characterized in that this step implements at least one quaternary imidazoline methosulfate compound as collector agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.