含碳浇注料用鳞片石墨的表面改性技术综述<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.015.016

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Abstract The monolithic refractories have acquired wide application for its convenient installation, good monolithic structure and firing-free character. Thermal shock resistance and slag resistance of refractories can be significantly improved by the incorporation of flake graphite. However, the poor aqueous wettability and dispersibility of flake graphite make it hard to be directly applied to carbon-containing castables. Surface modification of graphite is generally regarded as one of crucial ways to solve these problems. The advances in surface modification of flake graphite are reviewed in this paper, including the formation of binary oxide coatings(e.g. Al₂O₃, SiO₂, TiO₂ and ZrO₂) or ternary oxide coatings (e.g. MgAl₂O₄, mullite and calcium aluminate) by sol-gel method, formation of carbide coatings (e.g. SiC and TiC) at high temperature by in-situ reaction method,and improving aqueous wettability of the graphite by using appropriate surfactants. The effect of modified graphite on the properties of carbon containing castables and the effect of surface modification methods and preparation processing factors on the coating as well as coating formation mechanism are summarized. Moreover, potential research directions of carbon containing castables are also prospected from the perspectives of improving the bonding between coating and graphite, and developing advanced heating technology and efficient surfactants for preparing of surface-modified graphite etc.

Key words： flake graphite surface modification aqueous wettability carbon-containing castable

Published: 04 May 2018

CLC number:

TQ175.73

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	Articles by authors
	BI Yubao
	WANG Huifang
	ZHAO Wanguo
	LIANG Feng
	ZHANG Haijun

Cite this article:

BI Yubao,WANG Huifang,ZHAO Wanguo, et al. Surface Modification of Flake Graphite for Carbon-containing Castables: A Technological Review[J]. Materials Reports, 2017, 31(15): 108-114.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.015.016 OR http://www.mater-rep.com/EN/Y2017/V31/I15/108

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