
79 posts
Residue of cement in open circuit mill
We have a cement mill,2.4m dia 7.9m length with 3 comp. The residue in 90 microns is always fluctuate from 3 to 7 % for same feed rate and same composition and same air vent quantity. What may be the reason.?
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324 posts
Re: Residue of cement in open circuit mill
There could be a number of reasons: (i) changes in grindability of the clinker, or (ii) variation in the condition of the internal diaphrams between the chambers of the mill with regard to build-up. Have you inspected the mill internally?

79 posts

324 posts
Re: Residue of cement in open circuit mill
Air flow rate will affect residue as fines will be stripped off the charge in the mill before they have time to be ground.