Raymond mill

Raymond mill

Application: Calcium carbonate grinding processing, gypsum powder processing, power plant desulfurization, non-metallic mineral milling, pulverized coal preparation

Applicable materials: limestone, calcite, calcium carbonate, dolomite, barite, talc, gypsum, diabase, quartz, bentonite, etc.

Feed grain size: ≤ 30mm

Production capacity: 8-176 tons / day

Raymond mill purpose and scope of application:

Raymond mill is mainly used for barite, calcite, potash feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass , Insulation materials such as Mohs hardness of not more than 7, humidity less than 6% of the non-flammable and explosive minerals, chemical, construction and other industries more than 280 kinds of materials high fine powder processing, finished particle size in the 80-325 mesh range Within the arbitrary regulation, some materials up to 600 heads.

Raymond mill work principle

Raymond mill mainframe work process is driven by the central axis of the shaft rotation, the upper end of the shaft connected to the Meihuajia, mounted on the rack with roller device and the formation of swing fulcrum, which not only around the center of rotation, while the grinding wheel revolving around the ring at the same time , The roller itself due to friction and rotation. The lower end of the plum raft is equipped with a blade system. The position of the plum rake is at the lower end of the grinding roller. During the same process of rotating the blade and the grinding roller, the material shovel is thrown between the grinding roller rings to form a dunnage layer. Outward centrifugal force (ie squeezing pressure) to crush the material, which thus achieve the purpose of milling.

Analytical machine through the speed motor and driven by two slowdown on the turntable 60 leaves rotation, the formation of powder grading effect. The speed of the blade speed is adjusted according to the finished product size of the powder material. If you want to get finer grained powder, you must increase the blade speed, the blade contact with the powder increases, so that the undesirable powder is thrown to the outer wall and the airflow leaves, coarse powder due to the role of gravity fall into Grinding room for re-grinding, qualified finished powder by the leaves into the wind with the cyclone collector, the airflow and powder is separated, the powder is collected.

The Raymond mill's large cyclone collector plays an important role in the performance of the mill. When the flow of powdery gas enters the collector, it is in a high-speed rotating state. After the airflow separates from the powder, the airflow shrinks with the cone wall As the center moves to the cone's bottom (from the natural length of the gas stream), a circular column of gas is formed, and the powder is separated and collected. Due to the upward rotation of the core was negative pressure, so the lower seal requirements of the collector is very high, must be strictly separated from the outside air, or will be collected under the core of the powder will be re-taken away, which directly affect the machine's production, Therefore, the lower end of the collector is equipped with a powder lock, its role is to external positive pressure gas and collectors negative pressure gas, which is a very important component, such as without powder lock or powder cartridge tongue seal Not strict will result in no powder or less powder, seriously affecting the machine output.

Raymond mill performance advantages:

  • 1, the whole machine for the three-dimensional structure, covers an area of small, strong system, from the rough to the raw materials delivered to the milling and the final packaging, can be an independent production system.
  • 2, the finished product fineness of fineness, through the sieve rate of 99%, which is difficult to have other milling equipment.
  • 3, the machine transmission adopts sealed gear box and pulley, the transmission is stable and the operation is reliable.
  • 4, the important components are made of high quality steel, wear-resistant parts are made of high-performance wear-resistant materials, machine wear resistance, reliable operation. Mainframe blade holder in operation is always in contact with the material, so the blade holder from top to bottom of the two components, the lower seat wear and tear after the removal of the connecting bolts can be changed.
  • 5, the use of electromagnetic vibrating feeder uniform feeding, easy to adjust, small size, light weight, fuel-efficient power saving, easy maintenance.
  • 6, the electrical system using centralized control, milling workshop can achieve basic unmanned operations, and easy maintenance.
  • 7, dust pollution, low noise.

Raymond mill roll and grinding ring with the fineness of it

Raymond mill is a roller grinding crush material users will think a lot of roller and grinding ring is the fineness of the decision, so will choose a good material roller and grinding ring, in fact, not the case. Raymond mill working principle is hanging roller crush wind election crushed, Raymond mill determines the fineness of the material is not grinding roller and grinding ring, fine grinding Raymond mill is controlled by the wind turbine and fan control. Raymond grinding roller and grinding ring belong to crush the material, belonging to the fragile material quality can only determine the service life can not control the fineness and fineness is not related. Raymond mill grinding ring and roller according to the processing of different materials can choose high-alloy, 65 manganese, manganese 13 of the three materials, processed materials used in different time, the actual use of which manganese 13 roller And grinding rings more durable point, the price is more expensive. Raymond mill there is a more easy to wear parts is the blade blade many manufacturers are using ordinary steel, so wear will be very fast, I work the most professional Raymond mill manufacturers in the blade material is also very The affordable use of alloy steel are several times more durable than ordinary steel.

Raymond mill parts temperature is too high how to solve

Raymond mill milling process, the emergence of parts temperature is a normal phenomenon. Because, as equipment running time increases, parts and materials, parts and components between the friction time longer and longer, it is inevitable that there will be an increase in temperature. However, care must be taken if the temperature of the Raymond mill components is too high, which can not only reduce the production efficiency of the machine, but can also be very damaging to the Raymond mill. So, easy to form parts of the temperature is high, Raymond mill parts temperature is too high, what should we do?

  • 1, Raymond mill bearing temperature is too high. Bearing lubrication, the entire milling equipment work efficiency and quality have a very big impact. If we do not properly maintain the bearings, can not be added in time to replace the replacement of oil, or bearing parts of the seal is not strict, resulting in more grease generated, will increase Raymond mill frictional resistance, resulting in Raymond mill bearing components Temperature is too high. In order to prevent Raymond Mill bearing temperature is too high, we must promptly add lubricants and lubricants to ensure the cleanliness of the components to prevent dust pollution and other impurities.
  • 2, Raymond grinding roller grinding ring temperature is too high. In the milling production, grinding roller ring is in direct contact with the material components, so the greater friction, it is also very easy to form damage. In view of this situation, we use Raymond mill, we should pay attention to control the hardness of the material being ground and particle size, in order to reduce the friction of the grinding roller ring. In the milling operation for some time, we must pay attention to stop and rest. If the parts wear more serious, we must promptly replace the new roller worn out.
  • 3, Raymond mill fan temperature is too high. When the Raymond mill runs, sometimes we touch the blower device unconsciously, which causes the wind pressure to change and cause the motor to heat up. When the fan temperature is too high, it will seriously affect the normal operation of the Raymond mill. So, when we use Raymond mill flour, we must avoid this happening.

Want to make Raymond mill fast and efficient operation, we must make the appropriate adjustments according to the actual situation of the equipment. For example, properly adjust the ventilation of the Raymond mill chamber, turn on the ventilation ducts of the unit to allow Raymond mill indoor and outdoor airflow to run countercurrently, thereby preventing the Raymond mill chamber from overheating.

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