How To Avoid The Faults Of The Ball Mill
The ball mill is mainly used to grind materials in mineral
, cement, refractory, chemical industry, etc. a ball mill has dry and wet ways. When wet Ball Mill works, certain water and other liquid will be added into materials to increase flowability of materials, so the capacity is increased. When dry Ball Mill works, capacity is affected because material flowability is reduced, so absorbing wind device is needed on the outlet of Ball Mill, and then negative pressure is formed in the Ball Mill to increase flow ability of material, so the capacity is increased.
Type of Ball millsEnergy-Saving Ball Mill, Cone Ball Mill, Cement Ball Mill, Batch Ball Mill, Rod Ball Mill, Grid Ball Mill, Overflow Type Ball Mill, Tube Ball Mill, Dry-type Ball Mill, Wet Ball Mill, Intermittence Ball Mill.
The transmission parts of ball mill mainly consist of gear box, small and big transmission gear, electric motor and electric control panel. During the working of ball mill, the sound of gear box running should be smooth. If the wheel gear sounds slight beat or hoarse friction voice, and run well, you can observe continuously and find out the problems, ball mill should be stop and process; if the sound becomes louder, you should stop the machine immediately and check it.
Inspect operation of ball mill during test run
1) during test run, the personnel should write down all kinds of records seriously.
2)ball mill idle running. Ball mill idle running continuous operation must be more than 12~24 hours, during idle running, if problems happened, they must be solved immediately.
3) ball mill load test run. After the ball mill had been testing normally, the load test run can be taking. Load test run should be processed in stage, feeding should be process according to the discharging situation during load test run, which can avoid the unnecessary wear and damage to steel ball and shell liner .
Matters need attention during ball mill usage
1) between balance wheel and middle wheel of ball mill gear box, mesh, Tooth elevation do not install according to the regulation, this will cause the ball mill high speed shaft pinion drives one side intermediate shaft big gear wheel, while ball mill intermediate shaft pinion drives balance wheel, ball mill balance wheel drives the other side intermediate shaft that makes ball mill gear box cannot form two sides load sharing rotation, occur beat voice, it is dangerous.
2) ball mill should not work under the situation of overload and underfeeding.
3) ball mill should rotate according to the specified direction ,otherwise it will not discharge or damage the machine.
Ball mill frequency transformation plan:
Improved equipment must have sufficient starting torque to meet the requirements of load volume, keep the motor smoothly running in the frequency operation state and ensure the motor has constant power characteristics.
Using frequency control system transform the original mill driving system to meet the normal low speed operation, ensure the normal process control to extend the service life of the mill and reduce maintenance.
Improved equipment should achieve self-switching among automatic control founction, manual / power frequency and fault, and overcome swells caused by great inertia to guarantee the equipment normally operate.
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by: libby
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