Latest the Dongding lignite drying to mention the quality technology to bring new energy to the lignite power plant, the advantages of lignite and bituminous coal, anthracite, compared lower prices, high reactivity, but its relatively low calorific value, high moisture content, typically 25-60%. Lignite moisture increased transportation costs affect the boiler operation, reducing power plant efficiency, increase greenhouse gas emissions, and therefore the lignite drying mentioning qualitative development of the technology and equipment is clean and efficient use of lignite key. The Dong Ding the lignite dryer technology Dongding Company through the study of the physical and chemical characteristics of the lignite and lignite drying temperature, pressure, wind speed, and other relevant parameters on the basis of many years engaged in the coal slime dryer, established in Inner Mongolia lignite drying mentioning quality test base, after the company's technology R & D department, several experiments demonstrate, the successful development of the technology and equipment to mention the quality of the lignite drying. The technology can be lignite moisture drops below 8%, the thermal treatment of coal increased by up to 30% or more directly as steam coal in existing power plants use alternative to bituminous coal or anthracite. The project has a huge market potential for of lignite mining enterprises, also for tailings recycling and reuse of the enterprise as well as the use of slime project. This technology has the small-scale investment, quick, short payback period, the use of lignite (feeding water down to about 8 to 12% in 40% ± 10%), the briquette moisture content production, precipitation by up to 25 % spontaneous combustion tendency is very small, the combustion characteristics close to bituminous coal. Improve the drying efficiency and reduce emissions concentration to achieve energy saving and safety and environmental protection purposes. The Dong Ding lignite dryer technical characteristics (1) dry lignite does not get damp absorbent: dried lignite larger physical and chemical changes, that the the pores collapse of the cross-linking reaction and tar migration pores form a seal, the result becomes lignite more and more hydrophobic, and also can be observed to the hardening of the lignite, which also led to the formation of the rigid structure of the lignite. As a result, lignite from soft coal is converted to hard coal, is hydrophobic and hydrophilic conversion to stamp out lignite dry damp absorbent, which can achieve the long-distance transport of lignite. (2) dry lignite volatiles are effectively protected: the humidity content uploaded wet media, no volatile release conditions; (3) a high degree of automation, simple manipulation: a high degree of system integration, and with automatic intelligent monitoring system , real-time monitoring of the parameters of the hot stove furnace, the entrance to the dryer, the dryer outlet and induced draft fan entrance of the main parts of the temperature, pressure, flame, smoke oxygen, the system runs automatically control and adjust the parameters for automatic acquisition, fault alarm and security interlock protection. (4) Energy efficient: dry heat loss (drying) machine, high thermal efficiency; heat source coal burnout rate of pulverized coal up to 99% of the hot stove, the effect of heat transfer efficiency than traditional coal-fired hot air furnace section Coal 30 --- 50%; lignite powder produced by the drying process can be used as a fuel, which greatly reduces the cost of fuel. (5) Safety: seamless wind phenomenon unique sealing structure to discharge completely solve the sealing difficulty to achieve full oxidation negative pressure operation to eliminate the possibility of lignite combustion and explosion, run security