Crushing and screening are two main stages for coal mining process flowchart. Therefore, the coal crushing and screening equipments are the two key type of equipment in the coal quarry. When the coal crushing equipment is working, large coal-bearing stones are crushed by coal crushers to a size of 20 to 25 mm, and then they are fed to coal bunkers. Through the vibrating screen, those crushed coal stones are continuously enter the coal mill. Coal gets ground by grinding equipments in the coal plant. Coal particles get re-circulated around four times before achieving required fineness. Classifier allows finer particles to escape mill outlet while coarse particles are returned to mill for further grinding. Primary air is supplied by fan through air pre heaters to coal mill or in some boilers, fan pressurize hot air received from air pre heaters and then supply to mills. Hot primary air drives moisture from coal and acts as carrier to transport pulverized coal to the boiler through pipes.
Coal Crushing equipment-PEW Series Jaw Crusher
As mentioned above, the coal crushing plant plays a very important role in the coal quarry. So many mining applications have proved that Zenith’s PEW series jaw crusher can performs an efficient coal crushing plant. This series of jaw crusher has an extra-high adaptive capacity for all kinds of mining materials (including minerals, rocks, slag) whose anti-pressure is no more than 280Mpa. The adoption of advanced movable jaw assembly makes it more long-lasting.Movable jaw assembly adopts a high-quality steel casting, and moves through the two large flywheels made of cast steel. In addition, heavy eccentric shaft also adopts the forging billet when processing materials. All those new changes make the PEW series jaw crushers with exceptional reliability. World-class manufacture crafts and high-tech materials are adopted in the production, which makes this series of coal crushing equipment are in line with the features of open-pit mining situations.
Mobile Coal Screening Equipment
Zenith’s mobile screening equipment is very ideal for screening coal stones. Therefore, in the coal mining, coal producers always make it as the coal screening plant. According to our customers, Zenith’s mobile coal screening equipment is flexible, convenient and strong in mobility, so it can save a large construction capital and relocation. Raw Materials can be broken at the local place without being transported again, and also can be moved with the further separation of the raw material, which saves a large number of transportation cost. The use of coal crushing and screening equipment made by Zenith can help coal producers reach the zenith of coal mining business.