... , chemical materials 3.Reliable and easy operation Roller Rotary Kiln1. USAGERoller rotary kiln is mainly used for magnesium oxide, calcium ... material reduction, drying, decomposition, calcination, etc.. The roller rotary kiln lining is pure fiber structure. The roller uses high ... gas furnaces and other high temperature resistance furnace, the working temperature of 200-2500 degree C, widely used in ...