The effect of thermal insulation of the lining on the heat exchange of rotating apparatuses

Rotary kilns are used in many industries to process bulk raw materials. In the building materials industry, rotary widely for heat treatment. However, fuel utilization factor is extremely low. Thus, of cement clinker fired furnaces, thermal efficiency which does not exceed 55-60%. Therefore, task increasing such units relevant. operating losses environment only through furnace body reach 20-25% total combustion. this case, one main factors determining operation value resistance lining.
 The aim work study evolution and temperature changes kiln lining made shaped refractory reduce improve by lining. increase achieved changing shape creating appropriate cells introducing additional fibrous insulating material into them.
 A mathematical model software have been developed numerical calculations carried out determine non-stationary fields with a element substantiate choice an material.
 Analyzing calculation results, it possible conclude about expediency using increased resistance. use technical solution makes housing 18-24%, amount transferred working zone 1.5-8% due creation field volume, mass as whole. energy unit.
 presence insulation contributes emergence pulsations having oscillatory character affecting intensification exchange processes, general performance significant advantage method also fact that require consumption, or enthalpy combustion products.