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Acid Refractory

High Silica Bricks

Quality KA 83 HISI KA 78 HISI
Physical Properties AP (%) 14 14
BD (g/cm3) 2.25 2.23
CCS (kg/cm2) 350 350
PLC (%) @ 1500℃x2hrs 4~7 4~7
RUL (2kg/cm2,T2℃) 1530 1500
Chemical Properties (%) SiO2 83 78
Al2O3 15 21
Main Application Ladle

Acid Proof Bricks

Quality KA AP 65 A KA AP 65 B KA AP 65 C KA AP 60 A KA AP 60 B
Physical Properties Water Absorption (%) 0.5 1.5 3 5 8
BD (g/cm3) 2 2 2.1 2.1 2.1
CCS (kg/cm2) 700 700 600 500 500
Maximum Service Temp (℃) - - 1200 1200 1200
Acid-Proof Resistance (%) 0.3 0.5 0.7 1 1.5
Chemical Properties (%) SiO2 65≤ 65≤ 65≤ 60≤ 60≤
Al2O3 25≥ 25≥ 25≥ 25≥ 25≥
Cr2O3 1.5 1.5 2 2 2
Main Application Chemical processing Equipment Stack

Zircon Bricks

Quality KA 65 ZR KA 63 ZR KA 20 ZR
Physical Properties Refractoriness (SK) 40 36 35
AP (%) 18 20 20
BD (g/cm3) 3.75 3.5 3.2
CCS (kg/cm2) 600 600 800
TE (%) @ 1000℃ 0.45 0.5 0.55
PLC (%) @ 1500℃x2hrs - ±0.2 ±0.1
RUL (2kg/cm2,T2℃) - 1500< 1650
Chemical Properties (%) SiO2 34 - 10
Al2O3 - - 69
Fe2O3 - - 0.5
Cr2O3 2 - -
Zr2O3 65 63 20
Main Application Glass Tank Subpaving

Zirconia Bricks

Quality KA ZRC 1A KA ZRC 2A
Physical Properties Water Absorption (%) 16 13.3
BD (g/cm3) 4.75 4.83
CCS (kg/cm2) - -
Chemical Properties (%) SiO2 0.9 0.9
Al2O3 0.3 0.5
P2O5 - -
CaO + MgO 2.69 2.7
ZrO2 95.5 95.5
Main Application Open Nozzle
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