Development and Testing of Low-Energy-Intensive Technology of Receiving Sulphate-Resistant and Road Portlandcement

Abstract

The article presents the results of obtaining clinkers of sulfate resistant and road cement in the process of production tests. The use of man-made waste (lead slag, coal mining waste) as a clay component and additive is analyzed. X-ray, chemical analyzes of starting materials, clinkers and cements were carried out. The regularities of the influence of the compositions of charge, SC, modules, burning regimes on the chemical and mineralogical composition and quality of clinkers and cements, improvement of the rotary kiln operation, reduction of greenhouse gas emissions and fuel consumption are established. Various methods of analysis were used, calculations of the composition of raw mixtures were carried out according to the program "Shikhta" and "RCC". The strength of factory and experimental cements was tested after 3, 7 and 28 days and after steaming. The physico-mechanical characteristics and structure of cements have been studied. We have developed and tested low energy-intensive technology and compiled a technological procedure for obtaining sulfate-resistant and road cements.