Abstract

Utilization of Industrial Waste Produced by The Phosphoric Industry

Author(s): Kh. Kh. Turgumbayeva, Zh. U. Abdualiyeva I. Zh. Lapshina*, T. I. Beisekova and M. Zh. Shanbayev

The article presents the results of systematization of technogenic waste of phosphoric industry in Zhambyl region, amounts of their accumulation in the dumps and possible ways of processing as a secondary raw material are identified. A physic-chemical and structural properties of the waste were studied and a comparative evaluation of the content of basic oxides and their mineralogical composition were presented. Preliminary assessment of the waste was held by technological characteristics such as modulus of basicity (Mo) and module activity (Ma), which showed that all of the waste in varying degrees, have astringent properties. The results show a possibility of using man-made waste of phosphoric industry to produce mineral binders and building composites. The methods of modeling formulations of composite materials based on technogenic waste of Zhambyl region. It is shown that in the main technological process industrial wastes undergoes a high temperature treatment with the formation of mineral. It is offered to consider their phase and chemical compositions in the system CaO – SiO2 – Al2O3. Diagram of the system CaO – SiO2 – Al2O can be used as a technical model to determine the optimal composition of the basic oxides binder based on man-made materials. Indicated that a necessary condition of modeling compositions is the presence of basic oxides in raw ingredients. With the help of technical model represented by the basis of the ternary system, rational composition of multicomponent mineral binder is set. On the basis of summarizing the theoretical propositions of building materials and research experience in the field of synthesis without roasting binding systems a method of comprehensive utilization of industrial wastes in the production of building materials is proposed.