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KT Refractories US Company

Firebricks

Firebricksare high alumina refractory bricks are made for extreme demands. The alumina content in Firebrickscan be traced to the use of synthetic corundum of high purity, such as white fused alumina or tabular alumina. Additional ingredients are special refractory clays, reactive alumina and very pure modifications of silica.

Firebricksare fired at high temperatures to form a matrix with mullite, mullite-corundum or corundum that has excellent volume stability.

The service temperature for Firebricksgoes up to 1800°C. Firebrickscan be used nearly all fields of industrial application where extreme high temperature and increased resistance against aggressive slags and atmospheres. Such properties or features of Firebricksare necessary especially in the chemical industry and for the production of carbon black. The addition of chromium oxide, zirconium oxide and phosphates lends the bricks excellent structural flexibility, which is required for ash melting furnaces and gas reactors in incinerators. KT Refractories distributes Firebricksat the best quality with the most competitive prices by our fast, responsive customer service and reliable delivery service.

Call 1-877-365-2995 to order Firebricksand our fast reliable delivery services save you both time and money!

Firebricks Specs

Product index KFTN_LNY KFTN_LNJT KFTN_JPSTD
( CX-AWP)
KFTN_USSTD
(AH199B)
KFTN_FRSTD
( AT100)
SiO2 % 0.15 0.24 0.28 0.11 0.48
Al2O3 % 99.51 99.30 98.82 99.60 97.42
Fe2O3 % 0.11 0.08 0.01 0.041 0.06
R2O % 0.026 0.12 n/a 0.14 0.43
Apparent Porosity % 18 16.2 17-18 18 19
Bulk Density g/cm3 3.20 3.23 3.25-3.26 3.23 3.09
Cold Crushing Strength (Mpa) 133.5 96 85.2-90.4 106.59 96.2
Rupture Strength at 1450 °C 13 7.25
Refractoriness  under  load °C > 1700 > 1800 > 1700 > 1700 > 1700
Linear change rate on reheating
( 1600×3h) %
0 ~ +0.1 ±0.1 -0.3
Thermal Shock Resistance (>1100 °C cool with water ) times 23 18 20 at 1100 °C (cool with wind) 13 n/a
Item Chemical Composition Physical Indexes
Al2O3 SiO2 Fe2O3 Na2O Bulk Density Apparent Porosity Cold Crushing Strength
WT-99 ≥98.5% ≤0.5% ≤0.3% ≤0.4% ≥3.2 ≤20 ≥70
WA-99 ≥98% ≤0.3% ≤0.4% ≥3.15 ≤20 ≥60
SA-40R ≥92% ≤0.5% ≥3.05 ≤18 ≥68
SA-40S ≥90% ≤0.8% ≥3.1 ≤17 ≥80