Processing of low quality ekibastuz coals ashes and natural diatomites to obtain alumina and foamed glass

Abstract

Analysis of technological solutions on complex processing Ekibastuz coals ashes displays efficiency of complex alkaline technologies. However their significant drawback is the necessity to utilize big volumes of alkaline-silicic solutions. This research demonstrates possibility of their rational utilization by using natural raw diatomites to obtain formed and pelleted foamed glass widely used in construction industry as a heat-insulating material. Based on the data from scientific literature and their own research the authors suggest an improved scheme of complex processing Ekibastuz coals ashes.

Keywords

• Ekibastuz coals ashes
• diatomite
• Manvelyan-agglomeration method
• foamed glass
• heat insulation materials