Method of stabilizing aqueous fine coal slurry and product thereof
US4208217A · kind A · utility
13Cited by
2References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Sep 25, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S588/901
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aqueous fine coal slurry is stabilized by (a) intimately admixing the aqueous slurry containing between about 30 and about 80 percent fine coal refuse solids by weight with a stabilizing additive comprising Portland cement and (b) allowing the admixture to harden. Preferably the stabilizing additive additionally comprises finely divided blast furnace slag. Also it is preferred that sufficient additive is added so that the slurry will harden to an unconfined compressive strength of at least about 18 psi in less than about two days of addition of the additive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.