Process for the peparation of cogranulates comprising aluminosilicates and sodium silicates

摘要

Cogranulates of high bulk density which easily disintegrate in water and comprise aluminosilicates and crystalline sodium silicates having a layered structure. The aluminosilicates contained therein are those of the formula M2/nO.Al2O3. XSiO2. yH2O in which M is an alkali metal or alkaline earth metal, n indicates the valency of the cation, x is>/=2 and y has a value of between 0 and 8. The sodium silicates have an SiO2/Na2O ratio of (1.8 to 4.2):1. These cogranulates are prepared by mixing the pulverulent aluminosilicates and sodium silicates with one another and introducing the mixture into a zone in which it is compacted between two rolls rotating in opposite directions to form a compact. After comminution of the compact, the desired particle sizes are finally separated off from the oversize and undersize material. The cogranulates can be used in detergents and cleaning agents.