In deserving to compare, we joined alumina of high quality fireproof raw material in raw material of brick of light qualitative heat preservation, the performance that lets brick of light qualitative heat preservation is more superior. Make pledge firebrick is in gently thereby have density small, porosity tall, thermal conductance sex of small, heat preservation is good and performance of fireproof heat preservation improved below the premise such as the compression strength with have particular, wide application was won on heat treatment equipment.
Alumina pledges heat preservation brick weighs light qualitative tall aluminous brick again gently. Alumina content is in 48% above, main the light qualitative fireproof material that constitutes jointly by Molaishi and vitreous photograph or corundum. The bulk density of light qualitative tall aluminous brick 0.4 ～ 1.35g/cm3. Porosity 66% ～ 73% , compression intensity 1 ～ 8MPa. Heatproof shake performance is better. The dimension of GB brick is 230*114*65mm.
Light qualitative tall aluminous brick uses tall aluminous aluminous grog to add a few clay normally, law or bubble law produce with gas after classics mill with slop form pouring, figuration, via ℃ of 1300 ～ 1500 firing. Also can replace partial alumina grog with industrial alumina sometimes.
Light qualitative tall aluminous brick is multi-purpose the liner that builds kiln furnace at build by laying bricks or stones and thermal insulation, and erode without stock of melt of intense high temperature reach erode the place of action. When be being contacted with blaze directly, temperature of watch surface contact does not get prep above 1350 ℃ .
Manage of light qualitative tall aluminous brick changes target:
Light qualitative tall aluminous brick and the distinction that weigh qualitative tall aluminous brick:
The effect with light qualitative tall aluminous main brick is to use heat preservation, reduce caloric prediction of a person's luck in a given year; And heavy qualitative tall aluminous brick basically is to use the broil that experiences flare-up to bake. Convention pledges tall aluminous brick won't contact blaze to use directly commonly gently, and heavy qualitative tall aluminous brick contacts blaze directly commonly.
Main distinction has the following at 3 o'clock:
1, heat preservation function. The coefficient of thermal conductivity of light qualitative tall aluminous brick is in commonly 0.2-0.4 (average temperature 25 ℃ of 350 ± ) W/m.k, and the coefficient of thermal conductivity of heavy qualitative tall aluminous brick is in 1 (average temperature 25 ℃ of 350 ± ) W/m.k above, can reach the heat preservation function of light qualitative tall aluminous brick wants specific gravity from this many the heat preservation performance of qualitative tall aluminous brick is good.
2, fireproof degree. Of light qualitative tall aluminous brick fireproof degree be in 1400 degrees commonly the following, and those who weigh qualitative tall aluminous brick is fireproof degree in 1400 degrees of above.
3, density. Light qualitative tall aluminous brick is light qualitative insulation material commonly, density is in commonly 0.8-1.0g/cm3, and the density of heavy qualitative tall aluminous brick is in basically 2.0g/cm3 above.
Accordingly, we use light qualitative tall aluminous brick and the different character that weigh qualitative tall aluminous brick, apply them in the different link in industrial kiln furnace, perfect kiln furnace equipment effectively.
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