Ring roller mill and Raymond mill are two commonly used equipments for grinding stone powder in the mining industry, both of which belong to vertical mills.
1. Differences in composition structure:
The difference in the composition and structure of the ring roller mill and the 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 roller revolves around the central axis and rotates on its own at the same time, and the material is fed into the grinding roller by the shovel blade. Between the grinding roller and the grinding ring, the 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, which revolve around the main machine. Under the action of the high-pressure spring and centrifugal force, the grinding rollers swing outward horizontally and are tightly pressed on the grinding ring. The material is ground due to the rolling of the grinding rollers. purpose of powder.
2. The applicable materials of ring roller mill and Raymond mill are different:
Raymond mill is mainly used in the industries of building materials, mining and metallurgy, and the grinding fineness is between 80-400 mesh. Through technical improvement, the grinding fineness can reach 600 mesh. It is suitable for grinding materials with Mohs hardness below 7, humidity not exceeding 6%, non-flammable and explosive, such as limestone, talc, marble, kaolin, fluorite, etc.
The hardness of the materials that can be ground by the ring roller mill is higher than that of the Raymond mill, and the hardness of the materials that can be ground can reach the Mohs hardness level of 9.2, such as limestone, marble, dolomite, etc., and can grind fine powders of about 150-2500 mesh.
3. The production capacity of ring roller mill and Raymond mill are different:
Raymond is ground into fine powder, and the sieving rate can reach 99%. The three-dimensional structure reduces the floor space. Raymond mills have different numbers of rollers and different feeding particle sizes, which are below 15-30mm, respectively, and the production capacity is 1-90 tons per shift.
The number of grinding rings of different ring roller mills is different. There are 3 rings and 4 rings. The feed particle size is below 20mm, and it can process 0.5-15 tons of materials per hour. The production volume is slightly larger than that of Raymond mills.
The ultra-fine pulverizer is more energy-saving. If the output and fineness are the same, compared with the Raymond mill, the system energy consumption of the ultra-fine pulverizer is one third of that of the Raymond mill. Moreover, the grinding pressure of the ultrafine pulverizer on the material is also 800-1200kg higher.
Through the above comparison, we can see that although the appearance of the ring roller mill and the Raymond mill are not very different, their internal structures and material handling capabilities are quite different, so we should choose according to our own material conditions when choosing equipment. suitable equipment.