Method of beneficiating coal
US5236089A · kind A · utility
3Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1992 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Jan 29, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03B5/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The separation density of a dense media comprising a slurry of magnetite and water in a cyclone for beneficiating coal containing refuse is maintained within predetermined limits by: (a) measuring the total solids in an overflow of the cyclone; (b) comparing the total solids with a predetermined correlation with separation density; and (c) changing the relative proportions of the feed flow of magnetite and water to the cyclone when the separation density as determined by the correlation is outside the predetermined limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.