Bubble Alumina insulation firebrick

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Bubble Alumina insulation firebrick
Posting date : Mar 07, 2012
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38-
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Bubble Alumina insulation firebricks are sintered mainly by high-purity alumina refractory bubble. Their advantages include low bulk density, low thermal conductivity, excellent compression resistance, outstanding high temperature kilns, which work in a high temperature environment, such as synthetic ammonia liquefaction furnace, ethylene gas furnace, etc. Recommended service temperature: less than 1800℃. Item Brands PL-1.3 PL-1.5 PL-1.7 Al2O3 , % ≥98 Fe2O3 , % ≤0.5 Bulk density g/cm3, 1.3 1.5 1.7 Cold Crush strength (MPa) 6.0 8.0 10.0 Testing temperature when reheated with 2% contracting rate (℃) 1700*8 1700*8 1750*8 Thermal conductivity , (W/m·K)(350℃±25℃) 0.55 0.65 0.75

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