Pulverized coal drying means that the coal slime dryer sends the wet coal slime from the conveyor to the rotary cutter for crushing, so as to prevent the lumpy coal slime from entering the drying cylinder and affecting the drying effect, and the crushed coal slime is then sent to the Dry tumbler.
The rapid development of the mechanization of coal mining has created a space for us to get rich. The remaining coal slime after coal washing is a by-product with great economic value. With the improvement of coal mining mechanization, the proportion of pulverized coal and fine coal in raw coal is increasing, which makes thermal coal The amount of primary coal slime in coal washing plants and flotation tailings in coking coal washing plants has greatly increased. As a by-product of the washing process, coal slime has the characteristics of fine particle size, strong water holding capacity, high ash content, and contains more clay, which brings a lot of inconvenience to the comprehensive utilization of coal slime. Most of the coal slime in the washing plant is sold to local farmers at a low price, which not only pollutes the environment but also causes a waste of resources. The economic value of the coal slime has not been fully tapped. The price of coal remains high, and the drying and reuse of coal slime are imminent.
The new process and new technology of the Dingli coal slime dryer are to solve the problem that coal slime cannot be comprehensively utilized due to high moisture content (20% to 30%). The new heat source uses clean fuel and has adequate heating and cleanliness. At the same time, it adopts a multi-stage dust removal device, which has high dust removal efficiency. Coal slime drying adopts a new technology of crushing and dispersing the coal slime first, and then thermally drying it so that the treatment of coal slime can be continuous, industrialized, and automated. After the slime drying process, the moisture content of the slime can be reduced from 25% to 28% to about 12%. Due to the introduction of pre-crushing, dispersing, breaking up, and anti-sticking processes in the coal slime drying process, the drying efficiency of coal slime has been greatly improved. The performance of Dingli coal slime drying system equipment is stable, easy to operate and maintain, energy saving and environmental protection, High efficiency, and favorable price. Welcome to the online consultation.
