Abstract
The properties of kaolin molding pastes containing modifying additives with different acid-basic properties were investigated. Addition of liquid glass significantly improves the structural-mechanical properties of the systems and increases the mechanical strength of the finished granulated sorbent. Preliminary modification of liquid glass with carbamides negatively affects the moldability of the kaolin pastes. Treatment of kaolin with acetic acid followed by dissolution of the paste with liquid glass decreases the extrudability; on the other hand, the volume of the open pores in the absorbent increases from 0.15–0.22 to 0.27–0.40 cm3/g.
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