Aluminum isopropoxide and magnesium citrate are used as precursors to prepare nano alumina-magnesia spinel powder.The aluminum castable particles are impregnated in the sol of alumina-magnesia spinel precursors.The impregnated particles are processed to obtain aluminum castable particles attached with nano alumina-magnesia spinel powder.The particles attached with alumina-magnesia spinel play a crucial role in the preparation of high-strength aluminum castable and its prefabricated blocks.Besides,the lining for high-temperature calcining zone of the lime rotary kiln should be reasonably designed and built according to the thermal conductivity of materials.After using such new nano reinforced castable and prefabricated bricks,the service life of lining for the calcining zone of the lime rotary kiln has been extended and the heat loss of the kiln body has been reduced.
维普
万方数据
