Manufacturers who buy permeable bricks will know about the product, but what is the difference between the manufacturing process of permeable bricks and terracotta bricks? Today, let us tell you the technology.
Pervious bricks are mainly made by using acidic materials, and a certain proportion of clay and hard clay are selected and fired at high temperature (1300-1400 ℃).
The main ingredients used are kaolinite and about 8% impurities, and during firing, kaolinite is decomposed into mullite and finally crystallized, so that SiO2 and Al2O3 in clay bricks become silicates with lower melting points. Distributed around crystalline mullite.
The manufacturing process of permeable bricks is similar to that of terracotta bricks. The main difference is that the ingredients and clinker used in paving slabs will be slightly more than that of terracotta bricks. Their data needs to be rigorously screened and fired at high temperature before manufacturing. Choosing a certain combination of clay clinker and pottery clay can promote the value added.