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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 22  1963
Effects of Certain Factors in Potmilling of Sillimanite
H. P. S. MURTHY, A. V. SUBRAHMANYAM AND H. V. B. RAO
Pages : 14-21
DOI : 10.1080/0371750X.1963.10855440
Abstract
Effects of variationS, .of certain factors inherent in potmillin,s;, on the grindzng of sillimanite, have been studied. Duration of grinding has a direct bearing on the production of materzal finrr than 2.5 p, from sillimanite sand. Variations in the ratio of weight of pebbles to weight of sillimanite indicate that there is an optimum ratio at which maximum grinding tak,es place. The /;round sillimanites develop base exchange capaCity which is in direct proportion to the quantity of materz1al finer than I P. An important finding of these studzes is tihat grinding sillimanite to finer than l,tt releases consid,erable quantities of alumina that can be leached out with hydMchloric acid. Apparently, fine grinding tends to release alumina from sillimanite.
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