In ceramics, this material is porous.

(1) High-silica silicate material, which mainly uses acid-resistant synthetic ceramic particles such as hard ceramic slag and acid-resistant ceramic slag as aggregate, has water resistance and acid resistance, and its service temperature reaches 700℃.

(2) aluminosilicate material, with refractory clay clinker, calcined bauxite, sillimanite and synthetic mullite particles as aggregates. It has acid resistance and weak alkali resistance, and the service temperature reaches 65438 0000℃.

(3) Fine ceramic material, mixed and sintered with various clay clinker particles and clay to obtain microporous ceramic material.

(4) Diatomite material, which is mainly made of selected diatomite as raw material, added with clay and sintered. Used for fine filtration of water and acidic media.

(5) Pure carbon material, which is made of low-ash coal or petroleum pitch coke particles as raw materials, or by adding part of graphite and bonding with thin tar, is used for disinfection and filtration of water-resistant, cold and hot strong acids, cold and hot strong alkali media and air.

(6) corundum and emery materials, using different types of fused corundum and silicon carbide particles as aggregates, have the characteristics of strong acid resistance and high temperature resistance.

(7) Cordierite and aluminum titanate materials are widely used in thermal shock environment because of their small thermal expansion coefficient.

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