ROTARY FURNACE LINING TO REDUCE THERMAL STRESS

The aim of the study is to reduce the thermal stresses of the lining in the areas adjacent to the flare sintering zone of rotary kilns intended for the production of cement clinker. It is proposed to use a lining made of parallel rows of alternating chamotte and chromium-magnesite refractory products to reduce thermal stresses in the areas adjacent to the flare sintering zone by up to 20%, increase the service life of the lining by 1.1-1.2 times as a result of equalizing thermal stresses in the areas of the sintering zone. Optimization of the initial raw material mixture, in turn, made it possible to reduce the temperature of clinker formation and led to fuel savings.

Using of the Principle of Autogenous Crushing in the Production of Caustic Magnesia

Magnesium MgO exists in nature in large quantities as magnesite (MgCO3) and dolomite (CaMg (CO3)2), and in lesser amounts than oxide in the form of mineral called periclase. Magnesite refractory material containing MgO may be obtained from the high purity magnesite ore simple purification and subsequent calcination at a temperature of 500-700 °C.