... 3.Reliable and easy operation Roller Rotary Kiln1. USAGERoller rotary kiln is mainly used for magnesium oxide, calcium oxide, magnesium ... reduction, drying, decomposition, calcination, etc.. The roller rotary kiln lining is pure fiber structure. The roller uses ... refractories, metallurgy, and nonferrous metals metal, machinery and heat treatment and other industries. Songshan industry kilns &furnaces ...