Ring roller mill and Raymond mill are industrial milling equipment commonly used in the mining industry for grinding stone powder. Both of them belong to vertical mills, so how to choose? What is the difference between them?

1. The composition and structure of ring roller mill and Raymond mill are different

The difference in the composition and structure of ring roller mill and Raymond mill is mainly reflected in the design of the grinding roller.

The number of grinding rollers of Raymond Mill is divided into 3 rollers, 4 rollers, 5 rollers and 6 rollers. The spring plum blossom frame assembly is adopted. The grinding rollers revolve around the central axis and rotate themselves at the same time. The materials are sent into the grinding rollers by the blade Between the grinding roller and the grinding ring, the crushed material is crushed by rolling between the grinding roller and the grinding ring.

The number of grinding rollers in the ring roller mill can be as high as 36, and they rotate around the main machine. Under the action of high-pressure springs and centrifugal force, the grinding rollers swing outward horizontally and press tightly on the grinding ring, and the materials are ground by the grinding rollers. The purpose of powdering.

Because of the participation of the high-pressure spring, under the same power, the roller pressure of the ring roller mill is twice that of the Raymond mill.

2. The grinding fineness of ring roller mill and Raymond mill is different

Raymond mill is mainly used in building materials, mining, and metallurgy industries. The grinding fineness is between 80-500 mesh. Through technical improvement, the grinding fineness can reach 600 mesh. It is suitable for grinding non-flammable and explosive materials whose Mohs hardness is below 7 and the humidity does not exceed 6%, such as limestone, talc, marble, kaolin, fluorite, etc.

The ring roller mill can grind fine powder of about 325-2500 mesh, and the fineness can be adjusted flexibly. The entire production line is a sealed negative pressure system, which is environmentally friendly and has no dust pollution.

3. The production capacity of ring roller mill and Raymond mill is different

Raymond is ground into fine powder, and the sieving rate can reach 99%. The three-dimensional structure reduces the floor space. The number of rollers of Raymond mill is different, and the feed particle size is also different, respectively below 15-30mm, and the production capacity is 0.4-35t/h.

The number of grinding rings of different ring roller mills is different, there are 3 rings and 4 rings, the feeding particle size is below 25mm, and it can process 0.5-45 tons of materials per hour, and the production capacity is slightly larger than that of Raymond mill.

4. How to choose between ring roller mill and Raymond mill

Through the comparison of the above three aspects, we can see that although the appearance of the ring roller mill and the Raymond mill are not much different, their internal structure and material handling capacity are quite different, so we should choose equipment according to our own materials. Select the appropriate equipment for the situation.

For example, the hardness of the grinding material is relatively large, and the ring roller mill should be selected if it exceeds 7.2 grades; the fineness of the grinding material is relatively fine, and the ring roller mill should be selected if the grinding material is more than 600 mesh; the processing capacity is relatively large, and the ring roller mill should be selected.

If the material is more suitable and there is no special requirement for the fineness of production, then we need to compare the prices of the two and choose the one with higher cost performance.