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austin western wet ball mill

an investigation of wet grinding in a laboratory overflow ball mill | springerlink

an investigation of wet grinding in a laboratory overflow ball mill | springerlink

Batch breakage kinetic tests were performed in a mill of 0.3 m diameter for a range of mill conditions. Accurate simulation required the measurement and use of factors which accelerated the specific rates of breakage of the top sizes as finer material accumulated in the slurry. These factors depended on the size distribution expressed relative to the top size, not the absolute size, suggesting that they are due to a packing effect not a rheological effect. The data simulated correctly a series of steady-state continuous tests in a mill of the same diameter providing values were corrected to the hold-up, ball load, slurry density, and size distribution measured in the continuous mill tests.

L.G. Austin, 1984 La Importancia de la Transferencia de Masa en los Models de Simulacion de Molinos Giratorios de Bolas, Proceedings, 4th ARMCO Symposium de Molienda, Vina del Mar, Chile, pp. 99114.

L.G. Austin and C. Tangsathitkulchai, 1987, Comparison of Methods for Sizing Ball Mills Using Open-Circuit Wet Grinding of Phosphate Ore as a Test Example, Ind. and Eng. Chemistry Research, Vol. 26 pp 9971003.

R.R. Klimpel, 1984, The influence of Material Breakage Properties and Associated Slurry Rheology on Breakage Rates in the Wet Grinding of Coal/Ores in Tumbling Media Mills, Particulate Science and Technology, Vol. 2, pp. 147156.

kinetics of fine wet grinding in a laboratory ball mill - sciencedirect

kinetics of fine wet grinding in a laboratory ball mill - sciencedirect

The kinetics of batch wet grinding of quartz from a feed of 600425 m to a product of 80% less than 8 m have been determined using sieving and laser diffractometer sizing for size analysis. A dispersing agent was added while proceeding to longer grinding times to prevent particle agglomeration in the mill. The specific rates of breakage (Si) values obtained were higher than those of dry grinding of quartz at the same experimental conditions, but the primary breakage distribution (Bi,j) values were the same. Non-first order grinding was observed with continued decrease of the specific rates of breakage for finer grinding. The simulations of the product size distributions were in good agreement with the experimental data, providing the decrease in rates was included.

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