problem with increased quantities of rejects from ball mill - Grinding & Classification Circuits - Metallurgist & Mineral Processing Engineer

To participate in the 911Metallurgist Forums, be sure to JOIN & LOGIN
Use Add New Topic to ask a New Question/Discussion about Grinding.
OR Select a Topic that Interests you.
Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent).
Using Add Reply allows you to Attach Images or PDF files and provide a more complete input.
Use Add Comment = to comment on someone else’s Reply in an already active Topic/Discussion.

← Back to Grinding & Classification Circuits...

problem with increased quantities of rejects from ball mill (3 replies and 1 comment)

6 years ago

how can I reduce the the tonnes of rejected by a grate discharge ball mill

6 years ago

Teggry 6 years ago

More Information mate- what's being rejected, rock scats or balls?

6 years ago

rock(ore)

6 years ago

What amount of this material are you seeing in a day?
What are sizes of: this rock scat, the mill feed, and of the balls in mill?

6 years ago

Todd H 6 years ago

Further to above - did the amount of rejects suddenly increase? Ore type change; Feed rate change; Pulp density changes; Feed size change?

Has the grind size changed?

Is this a new mill with an ungraded ball charge? All the balls could be wearing out at the same time (if it is ball chips being rejected).

Are you maintaining ball charge at a set volume or using mill power draw to maintain the charge?

Have you inspected the grate to make sure it is still in good shape?

Regards

Todd

Todd Harvey - Global Resource Engineering http://www.global-resource-eng.com

Please join and login to participate and leave a comment.