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Raymond Grinding Mill

Raymond Grinding Mill

The Raymond Grinding Mill is mainly used for crushing non-metallic raw materials such as iron ore, pulverized coal, blast furnace slag, power plant desulfurizer, boiler injection coal, white ash, feldspar. , quartz stone, gypsum, barite, limestone, ceramics, slag, etc. Mohs hardness is not more than 9.3, humidity less than 6% of non-flammable and explosive mines, metallurgy, chemical, building materials and other industries more than 280 kinds of materials High-fine powder processing, the finished product size is adjusted in the range of 80-425 mesh (fine 1000 mesh). The Raymond Grinding Mill can also produce 30-80 mesh coarse powder by adding special equipment.

Working principle of Raymond Grinding Mill:

In the Raymond Grinding Mill main engine, a high-pressure spring with a pressure of 1000-1500 kg is fastened on the roller hanger. After starting work, the grinding roller rotates around the main shaft, and under the action of the high-pressure spring and the centrifugal force, it is pressed against the grinding ring, and its rolling pressure is 1.2 times higher than that of the Raymond powder machine under the same dynamic condition, so the output is greatly improved. When the material to be ground enters the grinding chamber, it is shoveled by the blade and sent to the grinding roller and the grinding ring for rolling. The powder after rolling is brought into the analysis machine along with the circulating air of the blower, and the qualified fine powder is introduced into the cyclone with the airflow. The powder is the finished product, and the large particles fall back to the regrind. The circulating air is returned to the blower and the above process is repeated, and the residual air is purified by the bag filter. When the grinding roller and the grinding ring reach a certain degree of wear, adjust the length of the high-pressure spring to maintain a constant rolling pressure between the grinding roller and the grinding ring, thereby ensuring stable production and fineness.

The structure of the Raymond Grinding Mill:

The Raymond Grinding Mill is mainly composed of a main machine, a fineness analysis machine, a blower, a finished cyclone powder collector, a bag filter and a connecting duct. According to the needs of users, it can also be equipped with auxiliary equipment such as crusher, hoist, storage bin, electromagnetic vibrating feeder and electrical control cabinet. In the Raymond Grinding Mill main engine, the grinding roller assembly is suspended on the grinding roller hanger through the cross-supporting shaft, and the grinding roller hanger is fixedly connected with the main shaft and the blade holder, and the pressure spring is in the outer end surface of the cantilever of the grinding roller bearing chamber, with a horizontal The support shaft is used as a fulcrum to force the grinding roller to press tightly on the inner surface of the grinding ring. When the motor drives the main shaft to rotate through the transmission device, the blade mounted on the blade holder rotates synchronously with the grinding roller, and the grinding roller is rounded in the grinding ring. Rotate while rolling. The motor drives the impeller of the analyzer through the transmission. The higher the impeller speed, the finer the sorted powder.

Raymond Grinding Mill performance characteristics:

  • 1. Compared with other mills, the Raymond Grinding Mill can increase the output by 10-20% under the same dynamic conditions. The grinding pressure of the grinding roller on the material is increased by 800-1200kg under the action of the high pressure spring.
  • 2. Mineral products with Mohs hardness less than 9.3 can be processed and crushed.
  • 3, the finished product has a wide range of particle size, the particle size can reach 0.613 mm (30 mesh), the particle size can generally reach 0.033 mm (425 mesh), and a small amount of material can reach 0.013 mm (1000 mesh).
  • 4. The dust removal effect of the Raymond Grinding Mill fully meets the national dust emission standards.
  • 5. The analysis machine is easy to adjust.
  • 6. The grinding device of the Raymond Grinding Mill adopts overlapping multi-stage sealing and has good sealing performance.

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