Experimental Study on Erosion of Hazardous Elements(K,Na,Zn,Pb) to Refractory Brick for Blast Furnace

The erosion experiments of K,Na,Zn and Pb to refractory bricks used in blast furnaces of KISCO are performed separately and combinedly to determine the effects of temperature and time on erosion by these hazardous elements.The following results are shown through the experiments: selfbaking carbon bricks and graphite carbon bricks are better to resist erosion of hazardous elements than corundum bricks;the favorable temperature erosion range of K,Na on composite brown corundum bricks and selfbaking bricks is 800~1000℃ whereas the erosions of K and Na on graphite carbons bricks are in direct proportion to temperatures;low temperatures are in favor of the erosion of Zn to bricks;and the effect of temperatures on the erosion of Pb is not obvious.Hazardous contents in the bricks are increased with erosion time.