|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
|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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