Specifications
alumina brick:1.Low thermal conductivity
2.high temperature resistance
3.excellent insulation
4.acid-base erosion resistant
Heat Insulation Sheet-Alumina Brick
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About?product:
Heat?insulation?refractory?bricks?is?my?company?the?American?advanced?standard?reference?to?the?development?and?
production?of?a?kind?of?high?efficient,?energy?saving,?high?grade?product.?The?products?have?been?widely?used?in?
metallurgical?hot?dip?galvanized?furnace,?silicon?steel?processing?furnace,?blast?furnace?stove;?The?petrochemical?
industry?ethylene?cracking?furnace,?hydrogen?furnace,?a?transformation?furnace,?sulfur?recovery?units;?And?other?such?
as?roller?kiln,?spindle?type?kiln,?prevent?(fight)?carburizing?(n)?the?stove?and?so?on?thermal?device,?and?satisfactory?
results.
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Product?features?:
1.?High?temperature?resistant,
?2.?Performance?is?good,
?3.?High?strength,
?4.?Show?low?porosity,
?5.?An?acid,?alkali?resistant,?aggressive?good,?etc
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Product?application:?
Mainly?used?for?thermal?boilers,?cement?kiln,?glass?furnace,?gas?furnace,?fertilizer,?blast?furnace?hot-blast?stove,?coking?furnace,?electric?furnace,?casting?and?casting?steel?brick
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Technical?parameters:
Al2O3% | >45 |
SiO2% | 40 |
Fe2O3% | <1.0 |
?CaO | 1.7 |
Normal?temperature?the?flexural?strength?MPa | 1.0-1.3 |
Volume?density?% | 0.52-1.25 |
Normal?temperature?compression?strength?MPa | 1.2-3.4 |
Softening?temperature?°C | 1250 |
Thermal?shock?stability?(water)?times?/?1000?degrees?air?cold? | >15 |
Coefficient?of?thermal?conductivity?W?/?(m.k)?350?degrees?+-10?degrees | -1 |
Heavy?burn?line?change?% | -1 1300*12h |
The?highest?use?°?C?temperature? | 1230-1760 ? |
? Item | Unit | Index | ||||
? | ? | LZ-75 | LZ-65 | LZ-55 | LZ-48 | |
Al2O3≥ | % | 75 | 65 | 55 | 48 | |
≥?refractoriness | °C | 1790 | 1790 | 1770 | 1750 | |
≥?softening?temp?under?0.2?Mpaload | °C | 1520 | 1500 | 1470 | 1420 | |
Liner?change?of?heating | 1500°C,?2h | % | +0.1???????????????????????????????-0.4 | ? | ||
1450°C,?2h | ? | +0.1???????????????????????????????-0.4 | ||||
≤?porosity | % | 23 | 22 | |||
≥?pressure?resistance?at?normal?temp | Mpa | 53.9 | 49.0 | 44.1 | 39.2 |