Ultrafine Grinding Mill is a new superfine powder (325-2500 mesh) production equipment developed through accumulating years of experience in grinding mill production.  You can use it to grind limestone, calcite, dolomite, petroleum coke, gypsum, barite, marble, talc, pulverized coal, etc.

1. Arbitrary Adjustment of Fineness: The product fineness of Ultrafine Grinding Mill can be adjusted arbitrarily between 325 meshes and 2500 meshes, and can reach D97 > 5 micron at one time.
2. High Efficiency, Low Energy Consumption: To produce same powder under the same power, the is 40% higher on efficiency and 70% lower on energy consumption than air-flow mill and stirring mill.
3. Safe Structural Design: There are no rolling bearings and screw in the grinding chamber. There is no problem of bearing and seal vulnerability and the hidden danger of screw loosening destroying.
4. More Environmentally Friendly: Ultrafine Grinding Mill adopts high-efficiency pulse dust collector and muffler. It has no dust pollution and noise pollution and fully meets the national environmental protection standards.

Specification

After crushed by hammer crusher, the large materials are crushed into small ones and sent to storage hopper by elevator, and then evenly sent to the upper distribution plate of the turnplate by vibrating feeder and sloping feeding pipe.

When the grinding mill is at work, all the grinding rollers are rolling in the ring, and the materials are driven to the edge of the turnplate by the centrifugal force and fall down into the grinding chambers where the materials are repeatedly pressed, crushed and grinded by the rollers.

The high-pressure air blower constantly inhales air within the grinding mill and, in turn,  the airflow with crushed materials are brought to the classifier whose high-speed impeller will screen the airflow: the unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air will go into the cyclone powder collector. Most of the qualified powders will fall and exit from the discharging valve at the bottom; a small proportion of the fine powders, with airflow, moves to the dust cleaner, and clings to the surface of the filter bags. At the same time, the fine powders clinging to the surface fall down by the sudden vibration of the filter bags, which is caused by the instantly ejected high-pressure gas controlled by the pulse valve. The materials from the above two lots are sent by the conveyor at the bottom to get finished powders packed. In addition, filtered clean air will be emitted from the air outlet of muffler in the end.

• Application area: micron powder producing.
• Grinding material:  middle and low hardness, moisture below 6%, and the material should be non-explosive and non-flammable, such as: calcite, chalk, limestone, dolomite, kaolin, bentonite, steatite, mica, magnetite, iolite, pyrophillite, vermiculite, meerschaum, attapulgite, diatomite, barite, gypsum, alunite, graphite, fluorite, phosphate ore, potassium ore pumice, etc.
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