The CaO content in raw materials should be less than 10%, otherwise it will narrow down the sintering temperature range of clay (> 15%, the temperature range is reduced to 25℃), When the particle size is bigger than 2mm, brittle bricks will be produced, or even cause explosion; Excessive content may also cause serious deformation of the body. How to handle situation like this?
Large pieces are picked out manually and removed by equipment screening, the small pieces are removed by stone removal roller, those are not removed can be crushed to below 2mm by high-speed roller or hammer crusher. The smaller the particle is, the smaller the impact is;