With the large upsizing of blast furnaces, ordinary fireclay can’t meet the production requirement of large size blast furnaces, therefore low porosity fireclay is developed. Low porosity fireclay bricks have better high temperature volume stability, lower creep rate and better abrasion resistance. The raw materials of low porosity fireclay bricks for sale are flint clay aggregate, soft clay binder, auxiliary materaisl(kyanite, sillimanite, andalusite), additives and so on. After rational grading, raw materials of low porosity fireclay bricks are fully mixed, then molded into shapes by high pressure and sintered at high temperature. The raw materials used for low porosity fireclay refractory brick production have dense structure, high purity and low impurity.
Low Porosity Fireclay Bricks Properties
- Higher refractoriness under load;
- Excellent thermal shock resistance;
- Good volume stability, low porosity rate;
- Good mechanical strength;
- Acidic slag corrosion resistant.
Low porosity Fireclay Bricks Physiochemical Indexes
|Item||Low porosity fireclay bricks|
|Bulk density g/cm3||2.2|
|Cold crushing strength MPa||40|
|Refractoriness under load (0.2MPa, Ti)||1450|
|Creep rate %(1280℃,0.2MPa, 25h)||0.4|
|Modulus of rupture(1200℃)||10|
|Thermal expansion rate%||0.7|
Low Porosity Fireclay Bricks Applications
Low porosity fireclay bricks for sale are widely used in hot blast furnaces matched for large size and middle size blast furnaces. They are mainly used at middle part and lower part regenerator wall, lower part checker bricks, support arch and so on. Besides, they are also used in glass furnace regenerators and so on.