Analysis of white cement production during low-temperature firing

Abstract

The possibility to produce white Eco-cement with the use of a dry method under low-temperature firing of a raw material mixture based on the CaO - SiO2 - AL2O3 - MgO system is shown. Computer calculations were performed and an analysis of the dependence of the characteristics of cement clinker on the quantitative ratio of raw components was carried out. A new composition of the raw material mixture with a decrease of 19 wt. % amount of the carbonate component and, accordingly, CO2 emissions during combustion was determined. The peculiarities of phase transformations in the material during firing with a maximum temperature of 1100 °S when microtalcum was introduced into the initial mixture with the formation of pericloze, ockermanite and merwinite as a factor in the structure and properties of cement clinker were noted.

Keywords

• eco-cement
• raw material mixture
• microtalc
• firing
• phase composition
• properties