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Several Factors Affecting The Normal Operation Of Vertical Ore Milling Equipment


2018-01-08 16:39:07

Several Factors Affecting The Normal Operation Of Vertical Ore Milling Equipment

Several Factors Affecting The Normal Operation Of Vertical Ore Milling Equipment

The vertical Ore Milling Equipment is the equipment that uses the grinding roll on the grinding disc to crush the material. There are several main aspects of the influence of the normal operation of the opposing Ore Milling Equipment.

  • Material Layer Of A Ore Milling Equipment. The suitable thickness of the material layer and the stable material layer are the basis of the stable operation of the vertical Ore Milling Equipment. The material layer is too thick and the grinding efficiency is reduced. When the pressure difference of the Ore Milling Equipment reaches the limit, it will collapse, which will have an impact on the main motor and the efflux system. The material layer is too thin, and the driving force of the Ore Milling Equipment will increase, which will cause damage to the grinding roller and the hydraulic system.
  • Vibration Of The Ore Milling Equipment. The vibration of the Ore Milling Equipment is too large, which will not only directly cause mechanical damage, but also affect production and quality. The factors that cause vibration include: Ore Milling Equipment's foundation, grinding pressure, thickness of material layer, air volume and air temperature, accumulator pressure, wear condition of roller surface or grinding disc etc.
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  • Grinding pressure. The grinding pressure is the main factor affecting the quality of production. The grinding pressure should be adjusted according to the size of the feed, the grain size and the attrition of the Ore Milling Equipment. In order to keep the material with a certain thickness on the grinding disc, reduce the vibration of the Ore Milling Equipment and ensure the stable operation, the roller pressure must be controlled well. When the grinding pressure is raised, the grinding capacity of the Ore Milling Equipment is increased, but it is no longer changed after a certain critical point is reached. If the pressure of the hydraulic cylinder is too high, it will only increase the driving force, speed up the wear of the parts, and can not improve the grinding ability. This characteristic is similar to the working principle of the roller press. But some manufacturers, when setting up the highest grinding pressure, take into account the reasons for the protection of the equipment and reduce the maximum of the grinding pressure. When the grinding pressure is low, the thickness of the material layer increases, the current of the main motor increases, the internal pressure difference increases, and the vibration of the Ore Milling Equipment increases. When the grinding pressure is high, the thickness of the material layer decreases and the current of the main motor is increased. The vibration speed of the Ore Milling Equipment increases and the damage of the parts is accelerated. So it is a key operation to keep a suitable grinding pressure.
  • Outlet Temperature Of The Ore Milling Equipment. When the temperature of the outlet gas of the Ore Milling Equipment is too low, the fluidity of the material will be worse, the qualified finished product can not be pulled out in time, and when the pressure difference in the Ore Milling Equipment is too high, the material will collapse. The method of increasing the temperature is to increase the pump air of the Ore Milling Equipment, adjust the fineness by the pulverized machine, increase the opening of the hot air door, and reduce the opening of the circulating wind. These methods are also suitable for other types of raw material Ore Milling Equipment. But when the temperature is too high (more than 130 degrees centigrade), it will also cause damage to the equipment. The lattice wheel in the lower part of the cyclone will expand to die, and the lubricating oil of the roller will also be dry. It is also bad for the tail discharge bag. The powder on the grinding disc is too much, the thickness of the material layer will be unstable, so it is necessary to control the temperature of the Ore Milling Equipment outlet. Each Ore Milling Equipment has its own adaptation temperature, and the operator should master it in the operation. For safety considerations, it is best not to shut down the inlet valve of the humidifier in the production.
  • System Air Volume. The air volume of the system must match with the feed volume. The method of adjusting the air volume can usually be controlled by adjusting the power of the Ore Milling Equipment's circulating fan or adjusting the opening of the kiln exhaust fan. The wind go aniseed. When the system air volume is too large, the internal pressure drop of the Ore Milling Equipment decreases, the current of the main motor drops, the thickness of the material layer is too low, the vibration value is large, and the sieve surplus is increased at the same time. When the air volume of the system is small, the thickness of the material layer increases, the internal pressure difference increases, the current of the main motor increases and the vibration of the Ore Milling Equipment increases.
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  • Ore Milling Equipment Spit A Lot Of Slag. The main reason is the large amount of feed. But when the material is easily grindable, it will also spit the slag. The size of the grinding material is large, the system air volume is insufficient, the grinding pressure is low, the system leaks air, the material layer is unstable, the retaining ring is low, and the roller surface or disc wear is serious, which will lead to the amount of slag discharged by the Ore Milling Equipment.
  • System Is Safe To Run. Raw material grinding operation, material drying heat from the kiln heat, so the operation of vertical Ore Milling Equipment, control the inlet and outlet valve to achieve the balance of kiln and Ore Milling Equipment. When the Ore Milling Equipment inlet and outlet valve system with the balance, the wind will affect the pressure balance of kiln tail will not.
  • Notice The Shutdown. Before the grinding begins, be sure to pile up enough material on the grinding disc so that the grinding roll will not stop because of high vibration when the grinding roll is ground. But the material layer can not be too high, otherwise when the roll grinding, the main motor current will be very high, and the equipment is unfavorable. The pressure at the ring of the nozzle before the grinding is a key value for the observation of the material position. Each vertical Ore Milling Equipment varies according to facts, some reasonable control. As much as possible before the shutdown to make the fines as much as possible as much as possible. If the fine powder is too much roll grinding, the vibration of the Ore Milling Equipment is great.
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