Calcium Zirconate as the Secondary Phase of Magnesia Refractories for Cement Rotary Kiln

The paper describes formation of the phases in magnesia-zirconia refractories due to reaction with the cement furnace charge in a form of pre-calcined meal or Portland clinker containing sulphur and chlorine in a different content at the temperature 1300°C and 1450°C. The studies were carried out by using the coating test. The microstructure changes of the contact zones between coating and the brick were studied by the scanning electron microscopy, SEM, coupled with EDS. The temperature dependence of reactivity the pre-calcined meal and Portland clinker in relation to the magnesia-zirconia bricks has been documented and discussed.

Utilization of Cement Furnace Dust to Produce Colored Vials & its Using in Epoxy Glass Floor

The dust of cement furnace is the actual secondary result of cement industry. That, there’s more than three million tons annually aggregated in Egypt, as it representing great danger whether to man and the surrounded environment. This because such dust has harmful effect on environment and beings, especially the close areas from cement factories. That, using of any cement dust quantity considers good solution of environment pollution, which resulted from the recent industry, especially cement. In this research, it uses cement dust to glass mixtures with increased rates may reach 70% of glass composition mixture’s weight, where such rate doesn’t affect the chemical or physical properties of obtained glass, so it shall be suitable to be used in many applicable purpose in this industry.