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High Alumina Brick for Blast Furnace

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Refractory Materials For Ironmaking Systems

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Index/Item		GL-65	GL-55	GL-48
Al₂0₃,%		≥65	≥55	≥48
Fe₂0₃,%		≤2.0	≤2.0	≤2.0
Refractoriness,℃		≥1790	≥1770	≥1750
AP,%		≤19	≤19	≤18
CCS,MPa		≥58.8	≥49.0	≥49.0
0.20MPa RUL，℃		≥1500	≥1480	≥1450
PLC,%	1500℃×2h	0 ~ -0.2	0 ~-0.2	/
PLC,%	1450℃×2h	/	/	0 ~ -0.2
Permeability		This test must be conducted. The data of the test shall be included in the quality certíficate.