Atomized aluminium powder is ground in the presence of stearic acid in a laboratory vibration mill at different conditions in order to study the effect of feed size, additive concentration, weight ratio of the feed to grinding media and ball filling on the grinding characteristics. Feed size is found to be an insignificant variable in the range studied. While a stearic acid concentration of about 3% is desirable, higher concentrations result in a reduction in the rate of grinding. A lower weight ratio assures a higher rate of grinding whereas higher ball filling is preferable considering the increased production of fines. © 1992, Society of Powder Technology Japan. All rights reserved.

R. Vedaraman

M. Ramanujam

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Studies in vibration milling of aluminium powder

Advanced Powder Technology

Fine aluminum powder is widely used in making paints, printing inks, slurry explosives, pyrotechnic chemicals etc. Hence the production of aluminum powder is highly important. In this paper the effect of grinding aids on the grinding characteristics of aluminum in a vibration mill under an inert atmosphere of nitrogen has been investigated. It is found that the use of grinding aids is essential in grinding of atomized aluminum. Among four different grinding aids, stearic acid appears to be the best grinding aid. © 1983 Taylor & Francis Group, LLC.

Particulate Science and Technology

Effects of grinding aids vibration milling of aluminum

The results of 300 experimental runs on vibration milling of soapstone, graphite, cXte, magnesite, rock phosphate, granite and zirX sand covering particle size range of (-0.25+0.10) to (-1.00+ 0.80) mm, density range of 2.29-4.59 g/cm3, hardness range of 1-7 Mho's hardness number and surface energy range of 4.50-38.66 kgf m/m2, are presented. The results obtained were used to determine (1) the effect of grinding characteristics (feed weight, feed particle size, ball charge, density of ball material, weight ratio and mill filling ratio), (2) the effect of material characteristics, (3) the comparative performance of vibration mill and ball mill, and to compare the specific surface areas produced by grindability apparatus, vibration mill and ball mill. Correlations for grinding energy consumption and rate of grinding are presented. © 1971.

Journal	Advanced Powder Technology
ISSN	09218831
Open Access	No