الوصف

High Alumina Brick HA**0 Item Standard Al2O3(%) ≥*0 SIO2(%) *2 Fe2O3(%) ≤1.7 Na2O+K2O(%) ＜2.3 Refractoriness ***0 refractoriness under load 0.2mpa(℃) ***0 Porosity(%) *2 Bulk density(g/cm3) 2.*3 Cold cushing strength (mpa) ≥*0 Thermal expansion at ***0℃(%) ≤0.3 Reheating shrinkingchange(%) ***0℃X*4h *0.3 High Alumina Brick HA**0 Item Standard Al2O3(%) ≥*0 SIO2(%) *2 Fe2O3(%) ≤2.0 Na2O+K2O(%) ＜2.0 Refractoriness >***0 refractoriness under load 0.2mpa(℃) >***0 Porosity(%) <*2 Bulk density(g/cm3) 2.***2.*8 Cold cushing strength (mpa) ≥*0 Thermal expansion at ***0℃(%) ≤0.3 Reheating shrinkingchange(%) ***0℃X*4h *0.3 High Alumina Brick HA**5 Item Standard Al2O3(%) ≥*5 SIO2(%) *0 Fe2O3(%) ≤1.8 Na2O+K2O(%) ＜1.2 Refractoriness >***0 refractoriness under load 0.2mpa(℃) >***0 Porosity(%) <*1 Bulk density(g/cm3) 2.***2.*5 Cold cushing strength (mpa) ≥*4 Thermal shock resistant at ***0C(water) >*0 Thermal expansion at ***0℃(%) ≤0.3 Reheating shrinkingchange(%) ***0℃X*4h *0.3 High Alumina Brick HA**0 Item Standard Al2O3(%) ****0 SIO2(%) ≥*8 Fe2O3(%) ≤1.8 Refractoriness ≥***0 refractoriness under load 0.2mpa(℃) ≥***0 Porosity(%) *0 Bulk density(g/cm3) 2.*5 Cold cushing strength (mpa) ≥*0 Thermal expansion at ***0℃(%) ≤0.3 Reheating shrinking change(%) ***0℃X*4h *0.3