Process flow: The raw coal through the feeding system enters the coal storage through vibrating feeder, belt conveyor, two iron removers, feed to the vertical mill evenly by the belt weighing feeder; The vertical mill grinds and dries the lump coal by the hot air of the hot blast stove and the pressure of the grinding roller, forming a closed circuit system with the classifier. The pulverized coal of qualified fineness is collected by the induced draft fan into the explosion-proof bag type dust collector, and the pulverized coal enters the pulverized coal silo, and the gas is filtered through the filter bag to discharge the standard. The pulverized coal sump pump system uses nitrogen as a medium to be pumped into the pulverized coal intermediate warehouse for use.

Project Indicators:

Raw coal feed size:<30 mm

Raw coal moisture content: 8%-15%

Natural gas consumption of hot blast stove: 35-45 m3/min

Fineness of coal powder: -200 mesh >80%

Hot air inlet temperature of vertical mill: 210-250 ° C

Uutlet temperature of vertical mill: 65-70 ° C

Production Capacity: 3.5-4.5 t/h