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Bulk Densities of Selected Dried Natural and Fired Kaolin Clays

Published online by Cambridge University Press:  01 July 2024

David Baumann  and
W. D. Keller
David Baumann
Affiliation:
Department of Geology, University of Missouri-Columbia, Columbia, MO 65201 U.S.A.
W. D. Keller
Affiliation:
Department of Geology, University of Missouri-Columbia, Columbia, MO 65201 U.S.A.
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Abstract

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Bulk (lump) densities of 31 kaolins were measured on the clay in the natural or raw state after drying at 100°C and after firing to 1510°C (2700°F). The kaolins were selected from such diverse origins as surface-weathered and sedimentary accumulations, hydrothermally altered bodies and flintclay deposits. The sedimentary group ranged in density from 0·82 to 1·85 in the dried raw clay, and 1·93 to 2·63 when fired. The hydrothermally altered clays ranged from 1·83 to 2·50 in the dried raw state, and 2·02 to 2·66 when fired. Flint clays ranged from 2·20 to 2·60 in the dried raw state (a “toasted clay” from Russia, 1.75), and 1·99 to 2·70 when fired. The effect of the genetic process on bulk density values is discussed and related.

Type
Research Article
Information
Clays and Clay Minerals , Volume 23 , Issue 6 , December 1975 , pp. 424 - 427
Copyright
Copyright © 1975, The Clay Minerals Society

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