Media Wear Measurement Philosophy Review

Guest
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Posted in: , on 31. Oct. 2012 - 19:14

Hello,

Without advertising a specific product, I'd like to ask those involved or associated with the mining industry their opinion on a design philosophy: Do you think there is scope for a cheap and non-invasive product that could measure the online material loss of wet grinding media? My design is developed to maximise the lifetime of grinding media and liners while minimising iron hydroxide contamination of the downstream product. I believe this could be especially useful in flotation circuits, where the formation of iron hydroxide is suppressed, thereby increasing the recovery of precious metals.

The articles I read about industrial grinding issues tend to be presented by suppliers and I don't know if I can rely on their potentially biased opinion of industrial problems - so who better to ask than industry!

May I please ask for your opinion towards this kind of design and if you feel it could be useful, provided that it can be cheaply purchased/trialled with minimal & non-invasive retrofitting?

It would be most appreciated if you can give your opinion of the industrial landscape in this situation!

Kindest regards,

Callum

A Right Load Of Balls.

Posted on 1. Dec. 2012 - 03:09

Bulk handling responsibility terminates at the upstream side of the mill inlet seal.

Grinding media is normally replenished in batches. These batches disturb the balance of the mill contents and cause temporary reductions in grinding efficiency. Mill operators try to minimise the performance fluctuations and carefully monitor power consumption and circulating loads. Some newer processes rely on salinity in the mill to enable downstream recovery of base metal.

All in all, you seem to be suggesting a radical improvement for some grinding operations and the answer to your qestion is "Maybe: depending on the mill contents."

Without further knowledge of your proposed system that is the best offer you are likely to receive.

A forged steel ball is just that, a roughly spherical lump of alloy steel of pretty regular form. There is no need of potential biased opinion. The major issue is shipping cost.

I grind my teeth when I see a business blindly feeding alloy balls into a mill to grind an ore which normaly contains less product than the balls do. Ball milling is an expensive form of cannibalism. And that's on a good day.

Good luck with your endeavour.

Guest
(not verified)

Cheers

Posted on 4. Dec. 2012 - 08:46

Hi Louispanjang,

I think you've given me a couple of very useful things to think about, thank-you very much for your time.

Kind regards,

Callum