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Roller Mill - SRM

The ring roller mill uses the principles of impact, extrusion and grinding to crush materials. There are multiple layers of grinding rollers and grinding rings installed, and the material first falls between the uppermost grinding rollers and grinding rings. There is a large movable gap between the grinding roller installed on the grinding roller bracket and the pin shaft. When the material passes through the gap between the grinding roller and the grinding ring, the material will be crushed by the impact, extrusion and grinding of the grinding roller. When the material passes through the multi-layer grinding rollers and grinding rings from top to bottom, the material will be ground many times. Under the action of gravity, the crushed material falls to the bulk material tray at the bottom and is thrown to the airflow channel, and is brought into the classification area at the top by the airflow; the classifying wheel classifies the powder, and the qualified fine powder passes through the classifying wheel and enters the The dust collection system collects, and the coarse material is thrown to the inner wall of the diversion ring, and falls back into the crushing area for crushing.

Product features

  • It can produce 325mesh-2500mesh product fineness at one time, from coarse powder to superfine powder, and the fineness of the finished product can reach D97≤5μm.
  • At the same fineness, compared with ball mill, impact mill, jet mill and stirring mill, ring roller mill has higher production efficiency, lower energy consumption and lower production cost.
  • At the same production capacity, compared with ball mill, impact mill, jet mill and stirring mill, ring roller mill requires less capital investment and shorter investment recovery period.
  • Equipment installation is simple and fast, no multi-layer steel structure platform required, no large-scale civil works are required, and the equipment can be put into production after installation.
  • Grinding rollers and grinding rings are made of high-hardness and wear-resistant materials, which have a long service life and ensure uninterrupted and reliable operation of the equipment.
  • The entire set of equipment operates under negative pressure, and the efficiency of the dust collector is as high as 99.9%, ensuring no dust pollution during operation.

Working Principle

The ultra-fine roller mill drives the main shaft to rotate through the transmission device. The upper end of the main shaft is connected to the rotor frame. The frame is equipped with an auxiliary shaft and a grinding wheel is installed on the auxiliary shaft. When the main shaft rotates, the auxiliary shaft rotates with it. The grinding wheel on the auxiliary shaft not only revolves around the main shaft, but also rotates around the respective auxiliary shaft. The grinding wheel generates strong centrifugal force during the revolution and rotation process, and has a strong roller grinding action with the stator. The ground material is driven by the centrifugal force and the rotating force field of the grinding wheel, and enters the grinding zone composed of the grinding wheel and the stator. The material is ground under the action of squeezing force and grinding force. The ground material falls on the slinger plate, which rotates with the main shaft. It slings the powder into the ring between the stator and the machine body, and rises along the shunt ring to the upper classifying chamber under the negative pressure of the system for classification. Qualified fine powder enters the collection system through the classification wheel, and the coarse material falls along the inner wall of the split ring into the crushing chamber to be ground again.

Product parameters

Model SRM800 SRM1000 SRM1250 SRM1680
Feed Size (mm) < 10 - 20 < 10 - 20 < 10 - 20 < 10 - 20
Moisture (%) < 5% < 5% < 5% < 5%
Mill Motor (kw) 75 132 185 315
Classifier Motor (kw) 15 - 18.5 22 - 30 37 - 60 55 - 92.5
Fan Motor (kw) 37 - 45 55 - 75 75 - 110 132 - 180
Product Fineness (mesh) 325 - 2500 325 - 2500 325 - 2000 325 - 1500
Production Capacity (T) 0. 5 - 4.0 1.0 - 8.0 2.0 - 12 3.0 - 20

Note: The production capacity is closely related to the particle size, specific gravity, hardness, moisture and other indicators of the raw materials. The above is only for selection reference.

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