Ecc America Inc.

Ecc International Limited

Tony May

Paul R Suitch

Dursun E Ince

Hilary Burgamy

A Taylor Coppage

Weyman H Dunaway

Michael D Smith

David S Bokor

Raymond B McNeeley

A method for preparing a calcined kaolin clay powder having good high shear rheology in high solids aqueous slurries. A kaolin clay powder of fine particle size is calcined at a sufficient temperature and for a sufficient period to destroy the crystallinity thereof; and the calcined product is dry milled in a media mill, using a work input of from 100 to 160 hp-hr/ton of dry clay.

Method for improving the rheology of calcined kaolin clay products

The bulk handling characteristics of a calcined kaolin clay powder, including the bulk density and flowability, are significantly improved by forming an aqueous slurry of the calcined kaolin clay powder and spray drying the slurry.

Method for improving bulk density and flowability of calcined kaolin

The rheology of an aqueous slurry of a calcined kaolin clay powder is significantly improved by spray drying a slurry of the calcined kaolin clay powder, recovering the spray-dried material, and forming an aqueous slurry from said spray-dried material.

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Sandersville, GA, United States of America

Tony May