The active lime production line refers to the process of making active lime. The general rotary kiln can be divided to cement kiln, metallurgy chemical kiln and lime kiln. The cement kiln with the dry and wet type cement kiln is used to calcine cement clinker. The metallurgy chemical kiln is mainly used by the metallurgy iron plant to magnetizing roast the lean iron mine, chromium and josephinite. The lime kiln is mainly applied by the steel plant and ferroalloy works to roast active lime and calcined dolomite.