Astrelin, I. та Kosogina, I. та Kyrii, S. (2020) UTILIZATION PROCESSING OF WASTE OF ALUMINA PRODUCTION INTO WATER TREATMENT REAGENTS. Resource-saving technologies of raw-material base development in mineral mining and processing. с. 371-391.

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Title in English

UTILIZATION PROCESSING OF WASTE OF ALUMINA PRODUCTION INTO WATER TREATMENT REAGENTS

English abstract

Continuous accumulation of waste from alumina production "red mud" leads to contamination of large land areas, reservoirs, and soils and is a potential threat of environmental catastrophe, that leads to the urgent need to find and implement ra-tional ways of its recycling. The most studied areas for alumina wastes recycling include the production of building materials and metals extraction. Red mud acts as a binder filler in the field of production of building materials. Products based on such filler have higher heat resistance, strength and density compared to the control samples. The obtained con-crete samples are more resistant to negative temperatures due to the high alkalinity of the filler. However, analyzing the results of existing studies about precious metals extraction from the red mud, its usage in the construction industry, as soil improvers etc., we can conclude that today there are no economically and environmentally justi-fied technologies that would allow red mud utilization in industrial-scale. This is prevented by its high alkalinity, small particle size, complex chemical and mineralog-ical composition. Red mud is mainly composed of iron and aluminium oxides, which characterizes it as an attractive secondary raw material. Based on a critical analysis of the results of the work on the disposal of red mud by foreign and domestic researchers, it is possi-ble to outline a promising direction of red mud recycling. Namely, it is the creation of water treatment reagents that can be effective for the removal of organic pollutants of natural and human-made origin. Creating water treatment reagents with the full use of red mud as a raw material can help to solve the problem of accumulation of the latter and provide inexpensive and effective reagents in the relevant field.

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