Raymond Mill

LDHB Raymond mill is equipped with a high-pressure spring pressing device and serves as a high-pressure grinding machine for ultra-fine powder processing. With an input feed size of up to 35mm, the Raymond mill can directly produce ultra-fine powders with an average particle size of less than 6.5μm in a single pass.

LDHB 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.

A full set of Raymond mill plant consists of main machine, reducer, analyser, piping device, blower, pulse 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 1000-1500kg 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 0.181 mm (80 mesh) particle size of up to 0.026 mm (600 mesh), a small number of materials can be as fine as 0.015 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.

FAQ

Q1: Why Does My Raymond Mill Start Slowly?

If the motor is improperly selected or its power is too low, the starting load will be excessive. This results in the motor being unable to drive the mill quickly, or even failing to start normally. In this case, check whether the rated power of the motor matches the equipment requirements, and replace it with a higher-power motor if necessary.

Q2: Is Blower Broken If Raymond Mill Produces Powder Slowly?

Not necessarily. It may also be due to improper air volume adjustment, pipe blockage, or excessive dust accumulation on the filter bag. It is recommended to check these parts first.

Q3: Can Grinding Rollers Be Repaired After Wear?

Minor wear can be repaired by surface treatment, but severe wear is recommended to be replaced directly, otherwise it will affect grinding efficiency and finished product fineness.

Q4: How To Prevent Slow Powder Output In Raymond Mill?

Regular maintenance, uniform feeding, controlling material moisture, and timely replacement of wearing parts are the key preventive measures.

Notice: There is a chance that LDHB may make changes to above-mentioned information. Please feel free to contact us for the latest product information.