Integrated use of technogenic raw materials in cement technology

Abstract

This work used a combination of modern physico-chemical research methods with standardized testing of technological and operational properties of raw materials, clinker, cement and compositions with its application.

Results over of research of the silicate systems with rice husk and ash-fly as technogenic raw material for making of cement clinker are driven. The features of the chemical-mineralogical composition, phase transformations during burning and astringent properties of material at the use of 42,5-50,5 % industry wastes in composition initial raw material mixtures are shown.

The object of the study were raw material mixtures for the production of Portland cement clinker based on the systems of chalk - clay - man-made raw materials and chalk - man-made raw materials.

The possibility of replacing exhaustible and non-renewable natural raw materials with a complex of multi-tonnage wastes of agro-industry and heat energy, which meets the objectives of expanding the raw material base of cement production, resource conservation and environmental protection.

Peculiarities of phase formation during firing of silicate systems of chalk-polymineral clay and chalk-technogenic raw materials taking into account changes in the quantitative ratio of components, in particular rice husk and ash-removal of thermal power plants are noted.