Method for improving handleability of calcined kaolin clay products
AssigneeAnglo-American Clays Corporation
InventorsJerry A. Cook, Robert H. Garner, Ralph E. Turner, Jr., Bomi M. Bilimoria
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Abstract
A method for increasing the bulk density and decreasing the time of wetting with water of a substantially anhydrous kaolin clay powder, comprising dry ball-milling said powder using work inputs of from about 5 to about 40 HP-hrs/ton of dry clay. The milling may be effected by grinding the clay with ceramic balls of less than 5 inches diameter. The process enables improved handling characteristics for the treated clay with respect to bulk material handling systems.
Claims8
A method of preparing a calcined kaolin clay powder having increased bulk density and decreased wet-out time comprising:
- (a) heating a kaolin clay powder of fine particle size to at least 400.degree. C. to render same at least substantially anhydrous;
- and
- (b) dry ball-milling said anhydrous clay powder using a work input in the range of from about 5 to about 40 HP-hrs/ton of dry clay.
Dependencies are inferred from the claim text.