Method for the heat treatment of fine-grained materials containing alkali compounds
US4043746A · kind A · utility
7Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1976 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Apr 23, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B7/44
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for the heat treatment of fine-grained materials containing alkali compounds which liquify at critical temperatures comprises pre-heating the materials and discharging them to a rotary kiln in counterflow to the kiln exhaust gases, and introducing cooling air to the kiln in such quantity and at such temperature as to reduce the temperature of the exhaust gases to a level lower than that required for the compounds to liquify.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.