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Insulating Firebricks |
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 Mullite Insulating Firebricks
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Application:
•Roller kiln,tunnel kiln,shuttle kiln,top hat kiln of ceramics industry,various resistor furnaces
•Craxking furnace,conversion,gas producer of chemical industry
•Hot-air furnace,heating furnace,soaking furnace,heat treatment furnace of metallurgy industry
•Refractory lining of hot surface of industrial furnace and back lining insulation layer for other refractory
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Mullite Insulating FirebricksChemical&Physical Properties |
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INDEX |
ITEMS |
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YM23 |
YM26 |
YM28 |
YM30 |
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Classification Temperature, ℃ |
1260 |
1430 |
1540 |
1650 |
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Density Kg/m3 ≤ |
520 |
780 |
880 |
1030 |
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C.C.Strength, MPa |
1.2 |
1.6 |
2.1 |
2.5 |
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Modulus Of Rupture, MPa |
0.9 |
1.4 |
1.6 |
2.1 |
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Permanent Linear Change CT-30℃ 24h % |
0.5 |
0.4 |
0.5 |
0.9 |
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Al2O3,% ≥ |
42 |
40 |
52 |
61 |
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Fe2O3,% ≤ |
0.7 |
0.7 |
0.6 |
0.5 |
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Thermal Conductivity W/m·k |
800℃ |
0.18 |
0.31 |
0.36 |
0.41 |
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1200℃ |
0.35 |
0.41 |
0.47 |
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Thermal Shock Resistsrce Cycles |
30 |
30 |
30 |
30 |
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JIS A.B.C. Insulating Firebricks
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Application:
•Roller kiln,tunnel kiln,shuttle kiln,top hat kiln of ceramics industry,various resistor furnaces
•Craxking furnace,conversion,gas producer of chemical industry
•Hot-air furnace,heating furnace,soaking furnace,heat treatment furnace of metallurgy industry
•Refractory lining of hot surface of industrial furnace and back lining insulation layer for other refractory |
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JIS A.B.C. Insulating FirebricksChemical&Physical Properties |
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Index
Items |
Testing temp.of 2% shrinkage on reheating,℃ |
Volume gravity
(g/cm3) |
Pressure strength
(kgf/cm2)
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Thermal conductivity
(kcal/ch℃)at 350℃ |
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A
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A-1 |
900 |
≤0.50 |
≥5 |
≤0.14 |
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A-2 |
1000 |
≤0.50 |
≥5 |
≤0.15 |
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A-3 |
1100 |
≤0.50 |
≥5 |
≤0.16 |
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A-4 |
1200 |
≤0.55 |
≥8 |
≤0.17 |
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A-5 |
1300 |
≤0.60 |
≥8 |
≤0.18 |
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A-6 |
1400 |
≤0.70 |
≥10 |
≤0.21 |
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A-7 |
1500 |
≤0.75 |
≥10 |
≤0.23 |
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B
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B-1 |
900 |
≤0.70 |
≥20 |
≤0.18 |
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B-2 |
1000 |
≤0.70 |
≥20 |
≤0.21 |
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B-3 |
1100 |
≤0.75 |
≥20 |
≤0.23 |
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B-4 |
1200 |
≤0.80 |
≥20 |
≤0.24 |
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B-5 |
1300 |
≤0.80 |
≥20 |
≤0.24 |
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B-6 |
1400 |
≤0.90 |
≥25 |
≤0.28 |
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B-7 |
1500 |
≤1.00 |
≥25 |
≤0.32 |
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C
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C-1 |
1300 |
≤1.10 |
≥40 |
≤0.31 |
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C-2 |
1400 |
≤1.20 |
≥50 |
≤0.39 |
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C-3 |
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