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Ball mill feed quality variations and effect on amount of output (2 replies)
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Greetings there,
I work at a phosphoric acid plant where we have a ball mill. Recently the mill has not been producing enough output, this is due to not being able to increase amount of ore going into the mill as air circuit temperature is dropping, vacuum not holding, and mill motor amp reduction (coating). One of the main factor has been humidity, but another major factor which I am having trouble understanding is ore softness (variation in silica content?). Kindly help me get more insight on the matter and what other factors could be included that I have not mentioned?
Also what possible ways are there to increase productivity of the ball mill, (do grinding aids have a major effect?). And is there a charge distribution effect which is leading to coating of the balls by electrostatic charges?
Would appreciate and additional info, Thank you for your time.