Float/sink treatment of crushed coal in solutions of monosaccharides and disaccharides
US4426281A · kind A · utility
2Cited by
12References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 21, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Sep 21, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03B9/005
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for removing ash, sulfur and inertinite from crushed coal includes float/sink treatment in aqueous solutions of monosaccharides, disaccharides, hydrogenated monosaccharides, hydrogenated disaccharides and mixtures thereof. Such solutions also improve the performance of such heavy media physical cleaning equipment as cyclones, heavy media baths, tables, spirals, hydroclones, flotation cells, jigs and solid-bowl centrifuges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.