The application of frequency converter in ball mill mainly optimizes grinding efficiency, reduces energy consumption and improves equipment reliability by adjusting the motor speed.

Core applications and advantages:

1. Speed control to improve grinding efficiency

Speed regulation: The grinding effect of ball mill is closely related to the speed. The frequency converter can accurately adjust the speed according to the material characteristics (such as hardness and particle size) to ensure the best collision and grinding efficiency between steel balls and materials.

-Flexible start and stop

2. Significant energy saving

Speed regulation on demand: The ball mill can reduce the speed and energy consumption when it is idling or lightly loaded (such as the initial start-up and discharge stage). According to statistics, the energy saving rate after frequency conversion can reach 20%-40%.

Power factor optimization: The frequency converter can improve the motor power factor and reduce reactive power loss.

3. Precision control and process optimization

Constant torque control: Ball mill is a constant torque load. The frequency converter ensures low-speed and high-torque output through vector control or direct torque control (DTC) to adapt to heavy-load conditions.

4. Equipment protection and reliability improvement

Overload protection: The inverter has built-in overload, overvoltage, undervoltage and other protection functions to prevent the motor from being damaged due to abnormal working conditions. Reduce mechanical wear: Smooth start and stop and speed adjustment reduce the impact of mechanical parts such as gears and bearings, and reduce maintenance costs.

5. Applicable scenarios

Large ball mills: such as mills above Φ3m in the mining, cement, and power industries.

Advantages of sowakam inverters in ball mills:

Independent cooling duct design is conducive to heat dissipation: The ball mill environment is dusty and high temperature, and it is necessary to ensure that the inverter has good heat dissipation

Selection and matching: sowakam SW200 series inverter power is 0.75-500kw, and the appropriate inverter can be selected according to the power and torque characteristics of the ball mill motor.

Application Cases After the cement plant's Φ4.2×13m cement ball mill was renovated, the SOWAKAM SW200 series 250kw inverter was used to achieve stepless speed adjustment from 15-22rpm, reducing power consumption per ton of cement by 12%, saving about 1.5 million kWh of electricity annually.