Grinding & Classification Circuits

Grinding & Classification Circuits

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Started by Paul Morrow
During mill circuit design, many people prefer to have two pumps to one cyclopac (group of cyclones)- one operating and one standby, while many people prefer to install only one pump for one cyclopac (hydrocyclone-pac). Advantages for two pump opti...
Last replied to by Paul Morrow
Thanks everyone for your great contribution! Hope to see comment from more people especially problems you see in your operations, although I may not be able to respond from now on.
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1708
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Started by Maya Rothman
Can any one suggest me an updated book on comminution (specially grinding, tumbling mills), which discusses about control, simulation and optimization of crushing and grinding machines and circuits. I own Communition practices and advances in Commun...
Last replied to by Bob Mathias
A good textbook for mineral processing is the SME Mineral Processing Plant Design, Practice and Control volume, which has good introductory sections on grinding. It is geared towards undergraduate stu...
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Started by
The smaller cylpebs have all migrated towards the feed side of the mill, and the larger cylpebs are at the discharge end. What do you think causes that? Does anyone have advice other than dropping the charge, to bring the media back to large on feed ...
Last replied to by
We have magnets on both the discharge and the feed end of the mills. Yes, we have seen high wear on the classifiers, not necessarily the blades on the rotor, but the top and bottom plates wear quickly...
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Started by
Can we avoid the death of SAG mill and Ball mill? Will they someday be replaces HPGR and VERTIMILL in order to save energy and simplify flowsheets. Retrofit with HPGR and abbandoned the SAG/AG mills?
Last replied to by
Sometimes we need to follow laws even if are in loss or difficult to follow. Or else our business will get closed soon. Today's environmental laws are --Convert all broun technologies to green technol...
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Started by Bob Mathias
There is a strong push in the research community on optimistic energy efficiency through measuring minimum energy is required for comminution and benchmarking energy efficiency of different sites. On the other hand there are people who think optimizi...
Last replied to by Paul Morrow
In conventional base metal milling throughput always trumps recovery for maximizing revenue. This has been demonstrated over and over again. TPD also trumps energy efficiency, especially when the pla...
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Started by Bob Mathias
A complex analysis at a pilot plant scale is very hard to duplicate in actual production. I'm not sure you can avoid the trial and error method. The bottom line is the kilowatt hours per ton required to achieve maximum recovery. Several SAG mills ha...
Last replied to by
Very interesting topic here. I missed your presentation at IMPC so I will take a closer look to the paper. It is strange to see opposite direction (increase or decrease ball size) to increase SAG thro...
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1080
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Started by Maya Rothman
Hi, Am I working on a Antimonite/Stibnite Ore Project (scoping) and I need Bond Work Index values. I do not have a lab not equipment at hand. What is a good estimate? Thanks
Last replied to by Maya Rothman
Thank you very much, I saw in Mintek mineral handbook it was 15.9 but confirmation was needed.
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1167
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Started by Paul Morrow
A LIBS On-Stream-Analyzer VS XRF- X-Ray OSA On-Stream-Analyzer are similar in that they are used for elemental analysis, but LIBS can measure the light elements where XRF struggles. LIBS are generally much faster in all cases, an analysis can ...
Last replied to by Paul Morrow
Compare Lebedinsky GOK and Stoilensky not entirely correct. Because 70% of the concentrate obtained LGOK 7-8 stages of magnetic separation (mineral processing plant + secondary benefication plant) and...

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