Extrusive formation of kaolin-based sorbents

The properties of molding mixtures based on kaolin containing modifying additives with different acid-base characteristics have been investigated. The introduction of liquid glass provides a significant improvement in the structural and mechanical properties of the system, as well as an increase in the mechanical strength of the finished granular sorbent. Preliminary modification of liquid glass with urea negatively affects the formability of kaolin masses. Treatment of kaolin with acetic acid and subsequent mixing of the mass with water glass reduces the suitability for extrusion; on the other hand, the volume of open pores of the absorber increases from 0.15 - 0.22 to 0.27 - 0.40 cm ³ / g. Tab. 1, ill. 3, bibliography: 9 titles.