KELEI MATERIAL Co.,Ltd.

Iron&Steel Industries
Aluminum Industries
Cement Industries
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Insulating Bricks

Product Features

This series of insulating bricks are made from high purity materials by unique technics, So, they have a lot of advantages such as stable volume, excellent thermal stability, high intensity, low thermal conductivity, etc. They are an ideal kind of energy-conserving products, which can be widely used as lining or as thermal preservation layers in various industrial furnaces and kilns in metallurgical industry, ceramic industry, chemical industry, machinery industry, etc.

Technical Properties Data:

Item	GDMI-120-0.6	GDMI -123-0.8	GDMI -130-1.0	GDMI -130-0.8	GDMI -130-0.6	GDMI -140-0.8	GDMI -150-1.0	GDMI -150-0.8	GDMI -160-1.2
Al₂O₃, %	≥40	≥40	≥45	≥45	≥45	≥52	≥60	≥60	≥72
Fe₂O₃, %	≤2.0	≤2.0	≤1.0	≤1.0	≤1.0	≤0.8	≤0.8	≤0.8	≤0.8
Density, g/cm³	≤0.6	≤0.8	≤0.8	≤0.8	≤0.6	≤0.8	≤1.0	≤0.8	≤1.2
Cold Crushing Strength, Mpa	≥1.5	≥2.5	≥2.5	≥2.5	≥1.5	≥2.5	≥2.5	≥1.5	≥2.5
Reheat Linear Change ≤1.0% Test temp. , ℃	1200 x8hr	1230 x8hr	1300 x12hr	1300 x12hr	1300 x12hr	1300 x12hr	1500 x12hr	1500 x12hr	1600 x12hr
Thermal conductivity， W/m.k (average temp. 350±25 ℃)	≤0.24	≤0.30	≤0.33	≤0.28	≤0.24	≤0.28	≤0.33	≤0.28	≤0.44
Thermal stability 1100℃, Cycle(Air cooling)	---	---	--	≥20	≥10	≥20	≥20	≥20	--

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