High alumina poly light bricks are made of special high alumina materials as the main raw materials, supplemented by appropriate additives and produced by poly light burning loss method. They have the advantages of high strength, good thermal stability, small change of heavy burning fiber, and small thermal conductivity. The use temperature is below 1350°C.
(1) Low thermal conductivity: Especially at high temperatures, the thermal conductivity is low and the thermal insulation performance is good.
(2)Good thermal shock resistance: Within the operating temperature range, the brick does not deform or peel off.
(3)According to different uses, choose reasonable mechanical strength to make the light spider have the best performance.
(4)Compared with similar lightweight refractory bricks, the higher load softening temperature and smaller reburning change rate have higher operating temperature, longer life and safer.
(1) Insulation layer
(2) Heat preservation layer
(3) Ceramic tunnel kiln
(4) Roller kiln
(5) Shuttle kiln
(6) Heating furnace
(7) Coking furnace
(8) Other thermal equipment
(9) Lining material for heat treatment furnace
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Physical and chemical indicators |
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Item |
LG-1.0 |
LG-0.9 |
LG-0.8 |
LG-0.9 |
LG-0.6 |
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Al2O3(%) not less than |
42 |
42 |
42 |
42 |
42 |
|
Fe2O3(%) not greater than |
2.0 |
2.0 |
2.0 |
2.0 |
2.0 |
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Volume density g/cm3 |
1.0 |
0.9 |
0.8 |
0.7 |
0.6 |
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Compressive strength at room temperature MPa not less than |
40 |
35 |
30 |
25 |
20 |
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Experimental temperature at which the reburning line changes by no more than 2% |
1400 |
1400 |
1400 |
1350 |
1350 |
|
Thermal conductivity W/m.k (350±25℃) not greater than |
0.50 |
0.45 |
0.35 |
0.35 |
0.3 |
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