Process for beneficiating coal by means of selective agglomeration
US4776859A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1987 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Nov 5, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D3/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is disclosed for the beneficiation of coal by means of selective agglomeration, wherein an agglomerating blend is used, which is constituted by: PA0 one or more main agglomerating agent(s), selected from the light hydrocarbons having a boiling temperature not higher than 70.degree. C., PA0 one or more non-ionic additive(s), selected from oil-soluble ethoxylated compounds; PA0 one or more heavy co-agglomerating agent(s) selected from oils deriving from the distillation of coal-tar, having a boiling temperature comprised within the range of from 200.degree. to 400.degree. C. or the residual products from oil processing or blends thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.