Calcined dolomite production of magnesium metal is hot main links. At present, China magnesium plant widely used alternative to rotary shaft kiln calcined dolomite as equipment. Gao has a degree of mechanization kiln calcination of good quality, labor productivity advantages, is recognized as the current hot magnesium smelting device of choice. However, the metal magnesium plant rotary kiln now ubiquitous problem of high fuel consumption. High kiln fuel consumption not only caused great waste of energy, but also restricts the reduction of production costs, increased atmospheric pollution. Currently, energy and environmental issues of national and industry Pat cause great importance, concerns the metal magnesium plant kiln energy saving issues, and to be effective it is necessary and reasonable reform, and has good economic and social benefits. Currently, metal magnesium plant kiln generally has great energy saving space, it is necessary also possible through technological advances achieved good energy saving effect. The key is to reduce the energy consumption of the system heat losses, to achieve recycling. The same time to improve the operation and maintenance levels, improve operation rate. The above article by Henan YuFeng Heavy Machinery Finishing release.