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Bulk density of B3 B5 B6 insulating refractory brick

Heat insulating refractory brick is a kind of lightweight refractory brick with heat insulation performance and light volume. Thermal insulation bricks have different standards in different countries. For example, the common thermal insulation bricks adopt the Chinese refractory industry standard. In the national standard of thermal insulation bricks, they are divided into thermal insulation clay bricks, thermal insulation high alumina bricks, thermal insulation mullite bricks, etc. according to the material, and different brands are used to identify the thermal insulation refractory bricks of various materials; Different foreign countries adopt different standards and brands of thermal insulation bricks.

JM28 insulation bricks

Series B insulating refractory bricks are often used in Japan, South Korea and other countries. They are distinguished according to the bulk density, compressive strength, grading temperature and other indicators of insulating refractory bricks, such as B1, B2, B3, B5, B6, B7, as well as series a and C. Series B is the most commonly used insulating brick.

Physical and chemical indexes of B3 B5 B6 insulating refractory brick:

ltem Insulating refractory bricks
B1 B2 B3 B4 B5 B6 B7
Temp. (℃) Heating line shrinkage< 2% 900 1000 1100 1200 1300 1400 1500
Bulk density(g/cm3) ≦0.70 ≦0.70 ≦0.75 ≦0.80 ≦0.80 ≦0.90 ≦1.00
Compressive strength(Kg/cm2) ≧25 ≧25 ≧25 ≧25 ≧25 ≧30 ≧30
Thermal conductivity(Kcal/m.h.℃adv. 350±10℃) ≦0.17 ≦0.18 ≦0.20 ≦0.22 ≦0.23 ≦0.27 ≦0.31
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