high alumina bricks for blast furnaces
high alumina bricks for blast furnaces are manufactured in our group company under the name of Zhengzhou Dongfang Industrial Group. for more information about our group company, please visit www.zzeast.com
1. physical and chemical properties:
Items | high alumina brick for blast furnaces | ||
GL-65 | GL-55 | ||
Al2O3 % min. | 60 | 55 | |
SiC % min. | - | - | |
C % min. | - | - | |
Fe2O3 % max. | 2.0 | 2.0 | |
Refractoriness °C min. | 1790 | 1770 | |
A.P. % max. | 19 | 19 | |
R.U.L. 0.2MPa °C min. | 1500 | 1480 | |
C.C.S. Mpa min. | 58.8 | 49 | |
Reheating linear change % | 1450°C×2h |
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1500°C×2h | 0~-0.2 | ||
M.O.R. Mpa min. |
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B.D. % min. |
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T.E. (1000°C) |
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2. high strength and RUL
3. Low linear chagne value
