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US 4,693,427 AGranted
Method for improving handleability of calcined kaolin clay products
AssigneeE.C.C. America Inc.
InventorsBomi M. Bilimoria, Herbert I. Lewis, Jerry A. Cook, Ralph E. Turner, Jr., Robert H. Garner
Life of this patent
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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 milling said powder in a media mill wherein the media is at least +5 mesh, and using work inputs of from about 5 to about 40 HP-hrs/ton of dry clay. The process enables improved handling characteristics for the treated clay with respect to bulk material handling systems.
Claims9
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 milling said anhydrous clay powder in a media mill using media having a particle size of at least +5 mesh, and 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.