Apparatus for making hollow carbon microspheres
US4279702A · kind A · utility
2Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1980 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | Jan 10, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B32/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An apparatus for making hollow carbon microspheres starting with hollow microballoons made of a material which can by heating be degraded to a carbon structure having a shape similar to that of the original microballoon. The disclosure teaches specific batch treating steps and apparatus for optimizing the rate of production of the microspheres, while at the same time minimizing degradation, rupture and cracking of the resulting carbon product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.