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Determination of clay mineral aspect ratios from conductometric titrations

Published online by Cambridge University Press:  27 February 2018

C. Weber ,
M. Heuser ,
G. Mertens  and
H. Stanjek
C. Weber*
Affiliation:
Clay and Interface Mineralogy, RWTH Aachen University, Bunsenstrasse 8, 52072 Aachen, Germany
M. Heuser
Affiliation:
Clay and Interface Mineralogy, RWTH Aachen University, Bunsenstrasse 8, 52072 Aachen, Germany
G. Mertens
Affiliation:
Qmineral, Romeinsestraat 18, 3001 Heverlee, Belgium
H. Stanjek
Affiliation:
Clay and Interface Mineralogy, RWTH Aachen University, Bunsenstrasse 8, 52072 Aachen, Germany
*
*E-mail: christian.weber@cim.rwth-aachen.de
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Abstract

It has been established that disagreements between different methods of particle size determination of clay minerals can be ascribed to the non-spherical shape of the clay particles. However, by having aspect ratios available, particle sizes can be harmonized. One frequently used approach to obtain aspect ratios is to compare particle sizes originating from at least two devices operating on the basis of different physical principles. In this contribution aspect ratios of nine kaolinite-dominated and one dickite-dominated sample were determined by conductometric titrations. The aspect ratios obtained were then successfully used to correlate particle size distributions from dynamic laser scattering and acoustic spectroscopy.

Keywords

aspect ratiokaolinitedickiteconductometric titrationparticle size
Type
The 14th George Brown Lecture
Information
Clay Minerals , Volume 49 , Issue 1 , March 2014 , pp. 17 - 26
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2014

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