FIELD: chemistry.
SUBSTANCE: crude mixture for moulding granules is prepared by mixing kaolin with powdered zeolite A, metakaolin and starch. Metakaolin is first obtained by annealing kaolin at temperature 500-850°C for 1-8 hours. The mixture of components is moistened, mixed and granules are moulded. The granules are dried, annealed and crystallised, washed and dried.
EFFECT: obtained granular zeolite A which does not contain binder has high mechanical strength and packed density.
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