Grinding & Classification Circuits

Grinding & Classification Circuits

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Grinding balls shape - roundness (6 replies)

8 years ago

banyechan 8 years ago

What are factors causing the balls out of roundness in grinding mills?

8 years ago

ThabisoKwenane 8 years ago

Impact, attrition and chipping

8 years ago

MillMan 8 years ago

1 like by banyechan

Depends: are you referring to a ball mill or a SAG mill?

A forged steel ball will have an end-of-life shape different from a cast in mold ball.

Yes, Impact, attrition, corrosion and chipping all affect ball wear and shapes.

Also see the 3 papers attached below.

Ball Wear Tests and Grinding media shapes

Laboratory-Tests-Spalling-Breaking-Abrasion-Grinding-Media-Balls-SAG-Mill.pdf

8 years ago

banyechan 8 years ago

It is forged balls for Ball mill. Any solutions to avoid such problems?

8 years ago

MillMan 8 years ago

What is the problem anyway? Do you have a photo of what you call problem?

Can you stop car tires from deforming and wearing out? Can you stop mill liners from deforming as they wear out?

8 years ago

banyechan 8 years ago

Hi,The photos are wear out. The mine said they would like to keep the ball's roundness, so the costs will be less.

Do you know some methods on improving this?

Thanks

https://www.911metallurgist.com/wp-content/uploads/2016/10/DSC03646.jpg

https://www.911metallurgist.com/wp-content/uploads/2016/10/DSC03647.jpg

8 years ago

MillMan 8 years ago

What is the original ball size, 130 mm? Who is your supplier? This is a photo a what? What are all those balls located?

+ Did you actually read the 3 PDF I gave you?

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