ECONOMICAL-ECOLOGICAL ASPECTS OF COMPLEX USE OF ALUMINUM RAW MATERIAL IN AZERBAIJAN.

The paper deals with economical-ecological recommendations on the complex use of the Zaghlik alunite deposit. Currently, reconstruction of Ganja Aluminum plant on the basis of new machinery and technology is fully completed, taking into account the complex use of alunite ore and waste to protect the environment. However, due to the absence of the concentrator at Zaghlik deposit, half of the crushed ore consists of impurities of non-aluminate minerals (kaolinite, pyrophyllite and quartz), the transportation of which entails large transport costs and complicates the chosen production technology at this plant. Therefore, we suppose that, it is necessary to perform the first enrichment of the alunite ore at the deposit in order to improve the technology of alunite production at the plant. We propose to build a concentration plant at Zaghlik deposit to separate minerals of impurities from alunite. At the same time, the resulting waste of enrichment can be used as raw material for the porcelain-faience industry. The implementation of this recommendation will reduce the volume of raw ore by half and will provide significant savings in the transportation and processing of alunite concentrate. High economic efficiency of this process is that, enriched ore having a high content (from 88% to 93%) of alunite with high recovery (from 75% to 78%) of alumina can contribute to the improvement of production and technological operations, to a minimum waste and prevention of environmental pollution causes.