Simultaneous inner and outer thermography of rotary kilns for hazardous waste incineration - controlled protective slagging results in a considerable prolongation of refractory life

摘要

It has been demonstrated that "thermographically-controlled slagging" can be successfully applied to the industrial operation of rotary kiln incinerators and that the developed new method, reducing brick wear to less than 50 mm/year, will prolong brick life considerably to 20,000 h and possibly far more. The applied method enables the plant operations manager to forecast the next required kiln shutdown more exactly, not requiring intermediate kiln shutdowns to verify brick thickness by drilling. The investment for the thermografical hardware has been returned - by reduction of brick wear at two neighboured kilns - within less than six months.