Main Article Content

Authors

Elina Khobotova*
V. Datsenko

Abstract

Background: Resource-saving developments using industrial waste as a man-made raw material for the production of binders allow for the expansion of the raw material base and improve the environmental situation in regions through the recycling of large-scale industrial waste, including coal mining waste. The dump coal mining unburned rocks of the Khmelnitskaya mine and the Sverdlov mine of Ukraine have been studied in the work. Methods: The mineral composition of the rocks was determined by X-ray phase analysis, the oxide composition and micrographs of the surface of cement clinker particles were determined by electron probe microanalysis using scanning electron microscope. Results: Clinochlore and muscovite have been detected in coal mining waste rock. These minerals are typically present in clays used in the production of Portland cement clinker. High adsorption and hydraulic activity of coal mining waste rock has been established. Conclusions: The use of unburned coal mining rock in the raw mix, instead of the clay component (5.8−10.2%), was demonstrated in the production of Portland cement clinker. The resulting cement clinker matches Portland cement in terms of its oxide and mineralogical composition and physical and mechanical properties. Significanc: The applied direction of using industrial waste as a man-made raw material for the production of binders has received further development.

Keywords:
coal mining unburned rocks; mineral and oxide composition; hydraulic activity; modular classification; cement clinker production; physical and mechanical properties

Article Details

References

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