Effect of Reactive-Al2O3 Addition on the Pore Size Distribution and Thermal Conductivity of Carbon Blocks for Blast Furnace

Xi Lai Chen; Ya Wei Li; Yuan Bing Li; Shao Bai Sang; Lei Zhao

doi:10.4028/www.scientific.net/AMR.97-101.453

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 97-101Effect of Reactive-Al2O3 Addition on the Pore Size...

Effect of Reactive-Al₂O₃ Addition on the Pore Size Distribution and Thermal Conductivity of Carbon Blocks for Blast Furnace

Abstract:

The effect of reactive-Al2O3 addition on the pore size distribution and thermal conductivity of carbon blocks for blast furnace was investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray, mercury porosimetry, and a laser thermal conductivity meter. The results showed that the pore size distribution and the thermal conductivity of carbon block were mainly influenced by SiC whiskers and reactive-Al2O3. With increasing addition of reactive-Al2O3, the mean pore diameter reduced and < 1μm pore volume increased of open pores owing to the more efficient filling of pores by SiC and reactive-Al2O3, and the thermal conductivities of samples increased due to the facts that the higher thermal conductivity of reactive-Al2O3 than that of brown corundum and the more formation amount of high thermal conductivity of SiC.

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Advanced Materials Research (Volumes 97-101)

Pages:

453-456

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.97-101.453

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Online since:

March 2010

Authors:

Xi Lai Chen, Ya Wei Li, Yuan Bing Li, Shao Bai Sang, Lei Zhao

Keywords:

Carbon Block, Pore Size Distribution, Reactive-Al₂O₃, Thermal Conductivity (TC)

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