Aluminum-Carbon Series

This series of products are primarily manufactured from high-quality bauxite clinker, corundum and graphite as main raw materials, and mixed with a variety of micropowder additives, which feature the advantages of excellent microporosity index, excellent resistance to alkali, high thermal conductivity, etc. It applies to the furnace waist, furnace belly, cooling wall and other parts of the blast furnace with different capacities.

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Series for Blast Furnaces

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Physical and chemical indexes of fired microporous aluminum carbon bricks

Item	Unit	Fired microporous aluminum carbon bricks			Non-fired aluminum carbon bricks
		WLT-1	WLT-2	WLT-3	Non-fired aluminum carbon bricks
Al2O3	%	≥65	≥60	≥55	60
Fｅ2O3	%	≤1.5	≤1.5	≤1.5
C	%	≥11	≥11	≥9
Bulk density	g/cm3	≥2.85	≥2.65	≥2.55	2.80
Apparent porosity	%	≤16	≤17	≤18	8
Normal temperature compressive strength	Mpa	≥70	≥60	≥50	45
Air permeability	mDa	≤0.5	≤2.0	≤2.0
Average pore size	µm	≤0.5	≤1.0	≤1
≤1µmPore volume	%	≥80	≥70	≥70
Liquid iron corrosion index 1,100℃	%	≤2	≤3	≤4
Alkaline resistance (rate of strength loss)	%	≤10	≤10	≤15
Thermal conductivity coefficient 0-800 ℃	w/m..k	≥13	≥13	≥13