COMPLEX PROCESSING OF ASHS FROM COALS NEAR MOSCOW WITH MAKING OF ALUMINA, COAGULANT AND BUILDING MATERIALS

The aim is to develop the physical-chemical base and technology for complex processing of the ashs from coals near Moscow with making of alumina, coagulant and building materials. The roengeno-phase, thermographic and crystal-optic analysis methods have been used. The thermodynamic analysis of interacting basic ash compounds with the sodium and calcium carbonates has been performed, the special kinetic features of this interaction have been investigated, the caking process has been optimized and its mathematical model has been created, the coagulating properties of the aluminium salts - coagulants made have been studied. The procedure for complex processing of the ashs from coals near Moscow with making of alumina, coagulant and building materials has been developed; the basic process stages of this procedure have passed the trial-factory test. The processing technology of coal ashs with output of initial data for the designing and technical-economic substantiation has been introduced. The ecological problem of TPS waste utilization with making such variable products as alumina, coagulant, bulding materials (brick, cement) has been solved. Application field: non-ferrous metallurgyAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio