Application of cullet of different chemical composition to foam-glass production

The results of the study of the possibility of using cullet of different chemical composition accumulated in landfills for the production of foam glass are presented. It has been established that sodium silicate, introduced into cullet in the form of liquid sodium glass, partially destroys the crushed cullet, averages the chemical composition of the charge and its most important technological properties. Due to the chemical interaction between the liquid sodium glass and the surface of the particles of crushed cullet, silicates are formed containing bound water, which is released at high temperatures (600 - 620 ° C) and promotes foaming of the foam glass. In the charge, liquid sodium glass leads to an increase in the amount of the glassy phase and reduces the tendency of the glass to crystallize. Tab. 2, ill. 3, bibliography: 8 titles.