Re: Wet Vs Dry Grinding
Please let me know if you need any further information.
Best Regards,
Todd ■
Re: Wet Vs Dry Grinding
Dry Grinding has limitation due to low threshold of release of kinetic energy to grind the solids
and the heat generation in the process of dry grinding .
In wet Grinding process , can go upto NANO size particles easily
If you have any specific problem can contact me on jadhwani@hotmail.com
I am in area of wet grinding for last over 33 years .
Originally posted by gigajoules
Hope I'm posting in the correct area. I would like to know what the advantages of wet grinding compared to dry grinding are (if any). Would one expect wet ground material to exhibit different leaching characteristics from dry ground materials, even when particle size distributions are identical? I'm dealing with uranium ores in a lab scale ball mill (Bond Ball Mill).
Much appreciated.
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Untitled
Originally Posted by jadhwani
and the heat generation in the process of dry grinding .
In wet Grinding process , can go upto NANO size particles easily
If you have any specific problem can contact me on jadhwani@hotmail.com
I am in area of wet grinding for last over 33 years .
Jadhwani,
Wet grinding sounds really much better. 
Indeed, I am trying to convince tool makers & machinists in my co. to practice wet grinding. However, they are quite reluctant to do so. They are saying it's too troublesome, as they have to wash away chips, clean the table & arrange all the parts back to the table for every in progress inspection. Also, it has higher possibilities for the parts to drop on floor or knock against other parts with increase of handlings.
Do you have any suggestions / strong points to convince hand-on personnel to practice wet grinding, perhaps advantages to themselves? Normally, people is willing to change if it beneficial them.
It would be much appreciated if anyone can give me some idea 
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Wet Or Dry ?
I hope this could help you :
There has been a well established “truth” that wet grinding is more efficient than dry grind- ing. This should apply to ball mill grinding as well as autogenous grinding. It has been earlier shown that the effect of dry ball mill grinding increases considerably, when the fines are efficiently removed from the mill.
In this work autogenous grinding in small continuos scale has been undertaken to compare the effect of fine particle removal from the mill charge by efficient classification both wet and dry. It could bee seen from the charge composition and from analysis of 43, 74 and 145 µm product particles that internal friction remained best in wet grinding, although the difference to the dry grinding where fines were most efficiently removed was relatively small. The differences still remaining are probably due to less efficient removal of particles in the 1 mm range which can not be transported by air ■
Wet Vs Dry Grinding
Water is used in "wet Grinding" for mineral transport through the grinding machine. It may aid in grinding size reduction. Usually, the liquid viscosity strength is raised to facilitate this action. JK Institute did testing on the viscosity vs. grinding action and found you need more than 200 centistrokes to make a difference. This liquid shear strength is not found in AG or SAG mills, only ball mills. Thus, without the added very fine sediment in the liquid environment, there is no difference wet or dry.
One voice for liquid is the cost of the air blowers to liberate the fines in an air-swept mill.
On the contrary, we are developing a new grinding mill that does no use balls, does not use air and is a dry process with a much higher grinding efficiency (fraction of the typical kw-hrs/ton). It compares with HPGR and has a size reduction range of >20:1.
Call if you wish to know more. ■
Re: Wet Vs Dry Grinding
That sounds like an interesting development Lawrence. As energy costs keep going up, the incentives for research into new technologies definitely increases. When will the official product release happen along with some "performance" numbers? ■
Grinding Efficiency -- New Developments & Annoucements
Dear KBaan,
Our first public announcement may occur at the MEI, Falmouth, UK Computational Modeling conference in Jun 21-22, 2011. I say may, since MEI must accept the abstract in their hands. This conference presents DEM modeling as a comminution tool. In this presentation, we use a well known comminution machine and compare it with a new concept, that shows improved attributes.
A second announcement may occur at SAG 2011 conference, in Vancouver, BC, Canada, September 25-29, depending on the technical committee accepting our abstract. The second conference will announce a second comminution machine with a different milling perspective, than the first announcement and summarize its performance attributes.
A third announcement may occur at Procemin 2011 8th International Mineral Processing Seminar, in Santiago, Chile November 30-December 2, 2011. Again, this will introduce a third comminution machine with another milling perspective and its performance improvements.
Each machine is distinct in its comminution action and results. We are developing known tested performance indices for calibration, which will be a part of the presentations.
Strong socks are suggested. ■
Attn: Mr Nordell
Its been a year since you were wrote the post above, and I was wondering if there is any new/further developments on these new designs. I seen that you were able to present your research at the mentioned conferences. Would be interesting to see some new developments in turning rocks to dust efficiently and effectively.
all the best,
Klaas ■
Wet vs Dry grinding
Hope I'm posting in the correct area. I would like to know what the advantages of wet grinding compared to dry grinding are (if any). Would one expect wet ground material to exhibit different leaching characteristics from dry ground materials, even when particle size distributions are identical? I'm dealing with uranium ores in a lab scale ball mill (Bond Ball Mill).
Much appreciated. ■