Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

J. S. Venugopal ¹, B. V. Hirannaiah ¹, S. K. Majumder ¹

Affiliations
1 Central Food Technological Research Institute, Mysore 570 013, IN

Abstract

A sophisticated technique of modified TG, DTG has been described which can detect clay species of kandite, pyrophyllite and talc groups by employing a simple home-made TG Instrument. Many new parameters like half weight loss, differential phase lag and half weight loss temperature are obtained along with other thermal parameters and their rationale are discussed in relation to species level characterisation. The parameteral derivation and its relationship to surface morphology of clays has been described. This highly sensitive method has special application in developing countries and could be adopted in clay based industries for material quality control.

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J. S. Venugopal ¹, B. V. Hirannaiah ¹, S. K. Majumder ¹

Affiliations
1 Central Food Technological Research Institute, Mysore 570013, IN

Abstract

An improved TG and DTG method for identification of montmorillonite, i11ite and attapulgite has been described. The effect of the modified experimental conditions on individual dehydration pattern and the Bouncing dehydration phenomena have been discussed. New thermal parameters for clay characterization have been elucidated. This technique involves a simple instrument design which could be fabricated indigenously and can be used for species identification or even routine quality control work in laboratories which Jack sophisticated and expensive instrumentation.

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