Apparatus for drying carbon black pellets
US3981659A · kind A · utility
34Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1971 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Jul 16, 1991 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Wet pellets of carbon black are dried to produce dry pellets by means of a two-step process. In the first step a bed of wet pellets is fluidized by means of a heated gas and the pellets are thus partially dried. In the second step the partially dried pellets from the first step are subjected to additional drying while in a nonfluidized state, e.g. pellets from the fluidized bed are heated and subjected to a mild, mechanically produced tumbling action during the second step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.