The Use of Wastes from Gas Purification Facilities of Alumina Production in Road-Building Technologies

Abstract

The environmental problems of alumina production, caused by the formation of waste gas treatment plants are considered. The phase and chemical composition and microstructure of dust from gas treatment facilities of thermal power plants has been studied. It has been suggested to use gas-cleaning plant wastes as active mineral additives in road mixtures. The possibility of using electrofilter dust as a mineral powder for asphalt concrete has been experimentally verified. It has been established that the properties of asphalt concrete using the dust from gas cleaning facilities of heat-power equipment of alumina production are practically the same as those of asphalt concrete prepared on the crushed limestone rock of Mazul limestone mine.