Super-grade high-alumina bricks

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High-Alumina Brick Series

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Product Details

Project	First-grade high-alumina brick	Second-grade high-alumina brick	Grade 3 High-Alumina Brick	Super-grade high-alumina bricks
Project	ZXLZ-75	ZXLZ-65	ZXLZ-55	ZXLZ-80
Al _2^O3%>	75	65	55	80
Fe ₂ O ₃%<	2.5	2.5	2.6	2.0
Volume density g/cm³	2.6	2.4	2.2	2.7
Room-temperature compressive strength MPa >	70	60	50	80
Load softening temperature °C	1510	1460	1420	1550
Refractoriness, °C >	1790	1770	1770	1790
Apparent porosity % <<	22	23	24	21
Rate of change of the line, %	-0.3	-0.4	-0.4	-0.2

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Super-grade high-alumina bricks

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