Fuel pellet and method for its production
US6165238A · kind A · utility
42Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Jun 14, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L5/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved pelletized fuel consisting essentially of from about 70% to about 98% coal fines and from about 2% to about 30% waste thermoplastic polymeric material (plastic) and a method of producing the improved pelletized fines are disclosed. The plastic is shredded or granulated before mixing with the coal fines, and the mixture is heated to a temperature to soften or melt at least a major portion of the plastic. The heated mixture is then shaped by applying a pressure of at least about 600 PSI and pressing the mixture through a pelletizing or extrusion die, or shaping the mixture in a briquetting operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.