Raymond Mill

Raymond mill is a high-pressure grinding equipment used for ultra-fine powder processing. With an input feed size of up to 20mm, the Raymond mill can directly produce ultra-fine powders with an average particle size of less than 6.5μm in a single pass.

Raymond mills are suitable for grinding and pulverizing conventional materials, such as kaolin, limestone, calcite, talc, marble, barite, gypsum, iron oxide red, iron oxide green, aluminum hydroxide, pigments, bentonite, clay, and other non-flammable and non-explosive materials with a moisture content of less than 8% and a Mohs hardness below grade 6, for the production of ultra-fine powders.

The whole set of a raymond mill consists of main machine, reducer, analyser, piping device, blower, dust collector, jaw crusher, bucket elevator, electromagnetic vibrating feeder and electric control system etc.

Working Principle

Inside the raymond mill, the grinding roller hanger is fastened with l 000l 500kg pressure raymond spring. After the start of work, the rollers rotate around the spindle, and in the Raymond spring and centrifugal force under the operation of the river, close to the grinding ring rolling, the rolling pressure than the same power conditions of the Raymond Mill 20% higher, so the output is greatly improved.

When the material to be ground into the grinding chamber, the shovel knife shovel up into the grinding rollers and grinding ring between the grinding, grinding powder with the blower circulating wind into the analyser, qualified fine powder with the gas flow into the cyclone collector that is the finished product, large particles behind the regrind. The circulating wind returns to the blower to repeat the above process, and the remaining wind enters the bag filter to purify.

When the grinding roller and grinding ring reach the fixed wear, adjust the length of Raymond spring to keep the constant grinding pressure between the grinding roller and grinding ring, so as to ensure the stable output and fineness.

Features & Benefits

1. Compared with other mills under the same power conditions to increase output by 20-30%, Raymond Mill grinding pressure of the rollers on the material under the action of the Raymond spring to increase the Raymond Mill on the Mohs hardness of less than 6 mineral materials can be crushed.

2. Raymond mill finished product size range, particle size coarse up to 0.613 mm (30 mesh) particle size of up to 0.033 mm (425 mesh), a small number of materials can be as fine as 0.013 mm (1000 mesh).

3. Raymond mill dust removal effect fully meets the national dust emission standards.

4. The analyser of Raymond mill is easy to adjust.

5. The grinding device of Raymond mill adopts overlapping multi-stage sealing with good sealing performance.

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