Abstract: It Introduced a kind of "Double-fan" grinding system which includes the vertical roller mill, high efficiency of Hurriclon cyclone, circulating fan and specialized hot gas generator, and an additionally equip of a by-passed small bag filter to purify the emission gas. In the "Double-fan" grinding system, it makes use of the high efficiency Hurriclon cyclone to collect the production and the collecting efficiency could be reached more than 95%; the specialized hot gas generator utilizes the recirculation gas for cooling down but not the ambient air to save the energy; at the same time, the system can realize self-desulfurization and denitrification. The "Double-fan" system has the advantages of less exhaust of gas emissions, low energy consumption, low maintenance cost, small area occupation which has been applied in numbers of new production lines and the old production line retrofitting. It is a kind of technical innovation grinding system of high efficiency, green and energy-saving.
