For the serious exhaust pollution of a fuel-fired air heater during the start and stop periods,a technique was proposed to reduce its emission,in which a ceramic ignition system was adopted and the oil-supplying system was improved.

This article studied on colloidal process of alumina and carbon composite refractory ceramic and investigated effects of processing parameters on material properties, such as pretreating of raw material , concentration of binders, solid loading and pH of slurry.