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Forum Index > vertical roller mill Improve production efficiency control

multimobilecruhser 4 years ago
ActivityRank: 0
REVIEW: To improve the productivity of the mill stand must control the differential pressure, the outlet temperature, the grinding pressure, ventilation, equipment vibration, etc. These five elements. Grinding pressure mainly refers to the roller and grinding ring on the material layer extrusion pressure, vertical grinding mill uses the principle of the material layer to achieve a standard of fineness of the finished material. When the grinding pressure is low, the material can not be completed effectively grind, more coarse aggregate, to a reasonable good control device parameters.
Pressure control:
Pressure can reflect the amount of legislation within the vertical roller mill feed size, differential pressure, said another job within the material more wear, poor ventilation system, internal circulation increases.
Solution:
Timely adjustment of ventilation to reduce the volume of feed based on the differential pressure changes, increasing the grinding pressure is ensure normal production efficiency foundation.
Temperature control:
Outlet temperature changes reflect the material residence time in the vertical roller mill, Chula temperature is low, says the vertical roller mill material layer thickness, the main motor power consumption.
Solution:
vertical roller mill outlet temperature control approach is to adjust the damper open loop wind or cold mill, the mill installed sprinklers.
Grinding pressure control:
Grinding pressure mainly refers to the roller and grinding ring on the material layer extrusion pressure, vertical grinding mill uses the principle of the material layer to achieve a standard of fineness of the finished material. When the grinding pressure is low, the material can not be completed effectively grinding, coarse aggregate more.
Solution:
Grinding pressure can not be set too high, otherwise it will lead to the roller, disc liner wear, damage to the hydraulic system.
Ventilation control:
Ventilation as a power source for the mill upgrade explicit material impact on the amount of feed, the ventilation rate is too small, the inner loop will increase the amount of vertical roller mill, powder classifying poor results.
RESOLUTION:
Increased pumping power system to reduce the amount of internal circulation, increase the volume of feed.
Vibration Control:
Vibration is affecting the volume of feed and the operation rate of the dominant factors, we have introduced the pre-main factors affecting the vertical vibration mill has process parameters, equipment failures, material change.
RESOLUTION:
Uniform feeding apparatus according to specific parameters, feed size to be qualified.

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