Structural Composition

The mill creates a system itself with less production processes, and materials under 25mm can be directly processed by the mill; it’s pollution-free and completely reaches national standards on dust removing; its grinding device has good sealing performance.

 Working Principles

Materials are delivered to hopper by elevator after being crushed; then they are transmitted uniformly to the host grinding chamber by vibrating feeder; and then they are scooped up to the gasp between grinding rollers and grinding ring by blade to be ground; at the same time the blower is blowing air into the grinding chamber and blows powders up to the analyzer for winnowing, the unqualified powders fall back to the grinding chamber for further grinding while the qualified powders enters into the cyclone separator along the air currents to be collected as the final products. The materials usually contains some water and they would release some moisture when ground and due to not absolute tight sealing of the whole duct system, outside air would be inhaled in making the system air volume increasing, and in order to ensure the mill works in condition of negative pressure, excessive airflow will go into bag-type dust remover to be discharged after being purified.

In the grinding chamber of ultrafine mill, grinding roller assembly is suspended in the hanger through transverse carrying bearing while the hanger, the main bearing and the blade carrier are connected fixedly; pressure spring is on the outer end of the boom in bearing room, making the roller tightly against the ring with transverse bearing as a fulcrum; when the motor drives the main bearing to rotate through transmission devices, the blade and the grinding roller rotate simultaneously and the rollers also spin as they are rotating; the analyzer impellers are also driven to rotate by motor through transmission device and the impeller’s rotating speed controls the fineness of the outlet powders.

The ultrafine mill is usually applicable fro materials with Mohs hardness under 6 including kaolin, limestone, calcite, marble, 

barite, heavy calcium, gypsum, iron oxide, iron oxide green, aluminum hydroxide, pigments, clay, coal, activated 

carbon, feldspar, talc, dolomite, carbon black, clay, etc.

Kaoline	Limestone	Calcspar	Griotte	Plaster
Soapstone	Feldspar	Iron Ore	Gangue	Barytes