Motor Retrofit For Ball Grinding Mill Improves Efficiency And Cuts Energy Use By 33%
Case Study
In this project for WMEC Electronics, CIITTO SERVO upgraded the existing induction motor + pulley gear system of a ball grinding mill to a permanent magnet direct drive motor. The result was a significant improvement in energy efficiency and a reduction in maintenance costs.
Before
Induction Motor + Pulley Gear
Rated Power: 26/32 kW
Voltage: 380 V
Current: 52.2/63.2 A
Speed: 960/1450 rpm
Energy Consumption: 116 kWh
Issues: High maintenance cost, gear abrasion, low efficiency
After
Permanent Magnet Direct Drive Motor
Rated Power: 22kW
Voltage: 380 V
Current: 36 A
Speed: 80 rpm
Efficiency: 90.86%
Energy Consumption: 77.4 kWh
Energy consumption reduced by 33%