Abstract:

Aiming at the problems of lining materials such as short service life, high temperature of kiln shell and large heat loss which are caused by alkali erosion and thermal shock spalling in large-scale rotary kiln during use,a study is carried out to improve the performances of alkali resistance,thermal shock resistance and abrasion resistance. Furthermore,mullite alkali resistance composite brick combined by heavy and semi-lightweight materials has long service  life,which effectively lowers the kiln shell temperature and achieve energy efficiency as well.