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Started by mohamedkrafi
I have lot of scats in overflow ball please help if I transformed overflow ball in grate discharge ball mill I will less scats production  or not? (D80=10mm, P80=140 microns)
Last replied to by Khosana
Hi Krafi, I would suggest that you firstly study your feed PSD vs ball charge size distribution before opting for the ...
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187
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Started by glocmines
Does making the ball mill close circuit, reduce its P80. (e.g letting the hydrocyclone produce an overflow of 130 um). this would mean, most of the pulp will go to the underflow. If we do this, what is the limit for the circulating load? The proble...
Last replied to by Jorge Ganoza
There are some aspects you should consider in your design. Your ore is very soft, it means that the non-sulphide gangue ...
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Started by Venkatesh
Propose to employ free floating grinding roller instead of balls or rods in a ball mill. Can we run the mill at 150 to 200 percent critical speed? How to assess the mill drive power in this case? Any formula? Air flow through the mill can be up to 4 ...
Last commented on by Venkatesh
Mechanically, it is a dry grinding rod mill overflow trunnion discharge type. However, grinding rods are replaced by equ...
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81
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Started by Venkatesh
Propose to employ a conical lining with larger diameter at feed end and smaller diameter at discharge end. It is also proposed to fit a classifying cage rotor at dischrge end of mill so that the coarse product falls back and returns to feed end and t...
2
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185
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Started by ricardo.pascor
If I have a ball mill 6x12, I wish to get better energy consumption, then It is possible to get when I change the trunnion bearing by roller bearing for mill grinding application? If it is possible, which is the percentage (%) to save from the act...
Last replied to by raghdmuhi
dear, I didnt understand the question.
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182
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Started by sajid khan
what is better for classification of copper up to 75 micron size whether to use spiral classifier or hydrocyclone
Last replied to by Romain CADENAT
If you want to do a classification based on grain size, hydrocyclone is the most appropriate.  If you want to make a c...
2
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227
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Started by randzzzzzzzzzz
How did you derived the formula for the critical speed of the ball mill?
Last replied to by sajid khan
When the ball mill rotates at the critical speed the theoretical trajectory of the charge is such that it would fall out...
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128
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Started by soheil8
hi dears.please help me. Are there iron ore concentrate plant that use pebble crusher in circulating load of AG mill? thanks.  
Last commented on by soheil8
Ok.
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97
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Started by Hauptsturm
I am currently working on a study with a client on alternative Grinding Circuit energy intensity quantification methods based on the approaches in http://www.ceecthefuture.org. I came across your articles https://www.911metallurgist.com/blog/bond-i...
Last replied to by Alex Doll
Short answer is yes, the SMC test is one way that you can "benchmark" an operating mill against a theoretical power con...
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Started by Shahid Rind
how to increase d 50 value for caco3  45 micron in ball mill
Last replied to by Aminpro
Do you want to increase the D50 while maintaining the D80 relatively constant?
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155
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Started by kocgium
Hi guys, I am new in the mining world, yesterday i was in a meeting with a lot of metallurgist, and all of them agree with this sentence:  " we design the plant so that grinding/milling area is the bottleneck " Why is that or why the bottleneck c...
Last replied to by AJNeale
This is a very good question - and one that is often not fully understood outside the processing fraternity.  The basic...
4
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79
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Started by jaquil
single stage grinding in gold processing plant. using ball mill. a simple flowsheet of it is humbly needed.
Last replied to by jaquil
Thank you for the respond ^_^ 
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Started by alzhrani a
hello every one 1- i am working in gold plant and my co-worker calling the sag mill Pebble mill and i searched in google then i found sag mill is not same as  Pebble mill if you can help me and explain the different  to me i will be happy. 2- i...
Last commented on by alzhrani a
Thank you mr dk
4
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227
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Started by Subhash-Kumar-Roy
Yesterday I calculated the power draw of our ball mill. I attach a graph of it.  Is it possible to have calculated mill power draw to be greater than mill motor HP? Calculated mill power draw is 1,509 HP Mill motor HP is 1,500 HP  Accordin...
Last replied to by Subhash-Kumar-Roy
Thanks everyone.  I realize I had forgotten to detect the mill liners from my mill's dimensions. Therefore yes, my mode...
4
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328
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Started by maino.kaupa
What can i do to get best grind sizing in the mill: add water? decrease water? add more balls? Speed up mill? or what more to do?
Last replied to by David
Also see https://www.911metallurgist.com/grinding/interpretation-of-power-draw/

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