Investigation of the use of coal waste as raw material for the production of aluminum
Abstract
Coal wastes, containing on the average 25% Al2O3, represent an important domestic raw material potential for the aluminium industry. Reliable data on the occurrence and composition of wastes from major coal mining areas in the Federal Republic of Germany were collected. The behavior of wastes during extraction with acids was investigated. Possible uses of residual silica are outlined. There exist basic process concepts for the extraction of alumina from the wastes, using experience in the processing of kaolinite. However, transfer to a technical scale requires several years of further development.
- Publication:
-
Final Report Bergbau-Forschung G.m.b.H
- Pub Date:
- November 1980
- Bibcode:
- 1980bfgm.rept.....K
- Keywords:
-
- Aluminum;
- Coal Utilization;
- Extraction;
- Waste Utilization;
- Hydrochloric Acid;
- Mining;
- Sulfuric Acid;
- Waste Disposal;
- Energy Production and Conversion