The results of studies on the modification of expanded vermiculite with active silica obtained from raw vermiculite by acid treatment are presented. It is shown that at a firing temperature of 1100 - 1200 ° C, a high-temperature cristobalite phase is formed in the phase composition of the obtained material. The properties and phase composition of ceramic vermiculite samples made on the basis of modified vermiculite and refractory clay are given.
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Science for ceramic production
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