Technology and the Principle

The disc is driven by the accelerator, which originated from the device of electromotor. The raw meal falls into the center of the milestone from the feed hopper. Then the material will be moved to crush at the edge of disc, from the disc around the nozzle from the exhaust air to improve these materials to Separator. Meal to separate returns after a concentrated mill, fine powder was collected in the precipitator unloading. In the process of the contact of airstream, the materials are dried to meet the client’s need at the proper moisture. Through the adjustment of the angle between the separator and the leaf of wind’s direction (not suitable to the small type of vertical mill), and also the speed of the separator rotor, it can reach the proper fineness of the materials.

Technological Process

Coal bunker belt→t branch pipe→belt weigher→ coal vertical roller mill→bag dust filter→reamer→triple valve→pulverized coal bunker.

How to start up the coal vertical mill

Speed reducer→hydraulic oil station →sealed electric fan →waste gas treatment station→exhausted cleanup unit→induced draft fan→powder concentrator→coal mill→raw coal conveying station. While, you turn it down with the operation that beginning from the end side.

Tips

1. The Great Wall Coal Vertical Mill’s air supply system is in the end of the kiln, whose temperature nearly about 147℃. This temperature is right for the material drying system and in usual, the entire cold blast valve has been turn down. The final coal powder is at about 62 ℃.

2. Regarding the vibration problem, the coal vertical mill can deal with it much better than the other grinding mill. First, the coal is a not hard material. Second, it is easy to deal with the bed of material. What you shall be noticed is the stopping feed of the coal meal problem.