Silica Mill

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Analysis of grinding kinetics

Under the condition of clear water, the media movement law and operating power of the Silica Mill under different medium diameters, different mill speeds and different medium filling rates were investigated respectively, and the power consumption was determined between the medium consumption, the mill speed and the load. relationship.

According to the analysis of the research process, when the diameter of the medium is increased from 7mm to 13mm, the operating power increase rate of the motor exceeds 10%. The higher the running speed of the Silica Mill, the greater the power increase rate; the increase rate of the operating power with the amount of the medium added. The increase is first increased and then slowed down. At 40kg, the power increase rate is large, reaching about 20%. When the medium diameter is increased from 13 mm to 25 mm, the operating power increase rate is less than 5%.

When the amount of medium added is increased from 20kg to 40kg, the operating power increase rate of the motor exceeds 10%. The higher the operating frequency of the motor, the higher the increase rate. When the operating frequency is 40Hz, the power increase rate is large, reaching about 20%. The increase rate of the operating power decreases first and then increases with the increase of the diameter of the medium.

When the operating frequency of the motor is increased from 20 Hz to 40 Hz, the operating power increase rate exceeds 60%, and increases with the addition of grinding medium and the diameter of the medium.

In general, the operating power of the Silica Mill increases significantly with the increase of the amount of medium and the speed of the medium. The influence of the speed of the Silica Mill on the running power is far greater than the influence of the amount of medium added and the diameter of the medium; therefore, The Silica Mill needs to determine the optimum amount of media and media diameter at the right speed.

In order to determine the good operating parameters of the Silica Mill, it is necessary to carry out the ore test research under different parameters. The effective grinding area increases with the increase of the amount of medium added. When the volume of the cylinder is constant, the medium content is too high, which will result in the formation of a relatively stable classification zone in the upper part of the cylinder, and the volume ratio of the test sample in the cylinder. It is not suitable for testing, so the media filling amount is initially set at 40kg.

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