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Abstract
The effects of using of bentonite in the ceramic compositions have been studied. Its utility as a suspending agent in the casting slips and as an aid in the plastic method of forming, when used as such, as well as after suitable pretreatment, was examined in detail. The bentonite from Bihar when used in the naturally occurring form, did not effect any improvement to a top settling clay or ceramic slip. On the other hand, bentonite treated with Na2CO3 showed results even better than that brought about by ‘Wyoming’ bentonite.
The plasticity of a very lean porcelain composition improved considerably on incorporation of Sodium bentonite and its dry strength increased from 222 psi to 942 psi. The fired characteristics as well as the working properties also showed definite improvement.