作者：MASAYOSHI KAKIHARA;HIDENORI TADA;EISHI IIDA;

作者单位：Research Center, Shinagawa Refractories CO., LTD. 707, Inbe, Bizen-shi, Okayama 705-8577;Research Center, Shinagawa Refractories CO., LTD. 707, Inbe, Bizen-shi, Okayama 705-8577;Research Center, Shinagawa Refractories CO., LTD. 707, Inbe, Bizen-shi, Okaya

刊名：Journal of the Technical Association of Refractories

ISSN：0285-0028

出版年：2011-01-05

卷：31

期：2

起页：126

止页：130

分类号：TQ175

语种：英文

关键词：MgO-C;low carbon;pitch;resin;fused MgO;graphite;spalling resistance;slag corrosion resistance;coated aggregate;x-ray diffraction;thermal expansion;modulus of elasticity;thermal expansion absorbing coating;

内容简介

MgO-C bricks are widely used for steel converters, vacuum degassers, ladle slaglines, electric arc furnaces, and many more applications, but there is an urgent need to lower the carbon content of the bricks, from the standpoint of heat-loss and carbon pick-up of steel. The main problem associated with lowering the carbon content of MgO-C bricks is the reduction in the spalling resistance. Various methods have been attempted to suppress the reduction in spalling resistance until now. In this paper, the authors report the effects of adding pitch to low-carbon MgO-C bricks, as related to spalling resistance, and specifically the effect on improving the spalling resistance by applying a thermal expansion absorbing layer on the surface of the MgO aggregate grains.