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Address: Dongdian Village, Chaohua Town, Xinmi City, Zhengzhou City, Henan Province
Clay shaped brick
Clay brick is made from hard clay, cokestone and binder through granulation and powder making processes, mixed in a certain proportion, then pressed into shape and calcined at high temperature. Clay Fire-resistant brick is divided into professional-use Clay bricks (including Clay bricks for blast furnaces, Clay bricks for glass kilns, Clay bricks for hot blast stoves) and general-use Clay bricks according to their uses.
General purpose Clay brick is divided into three grades PN-1, PN-2 and PN-3 according to the physical and chemical indicators.
Clay brick for professional use is divided into three grades ZN-45, ZN-40 and ZN-36 according to physical and chemical indicators.
Physical and chemical indicators of general purpose Clay brick:
|0.2MPaLoad softening start temperature ℃ ≥||1300||1250||1200|
|Heating permanent line change(1350℃×2h) %||-0.2～+0.1||-0.3～+0.1||-0.4～+0.1|
|Apparent porosity % ≤||24||26||28|
|Compressive strength at room temperature Mpa ≥||30||25||20|
Physical and chemical indicators of professional use Clay brick:
|Al2O3 % ≥||45||40||36|
|0.2MPaLoad softening start temperature ℃ ≥||1430||1380||1350|
|Heating permanent line change(1400℃×2h) %||-0.2～+0.1||-0.3～+0.1||-0.4～+0.1|
|Bulk Density g/cm³||2.0～2.3|
|Apparent porosity % ≤||16||19(22)||22(24)|
|Compressive strength at room temperature Mpa ≥||60||40(35)||35(30)|