Effects of Cr2O3 addition on property improvement of magnesia-spinel refractories used in RH snorkel

被引：21

作者：

Li Jingjie ^{[1
]}

Zhao Huizhong ^{[1
]}

Zhao Pengda ^{[1
]}

Cui Jiangtao ^{[2
]}

Mu Songlin ^{[2
]}

Lv Yongfeng ^{[2
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China

[2] Zhengzhou Huite Grp Co Ltd, Zhengzhou 452370, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 16期

关键词：

RH snorkel; Magnesia-spinel; Addition; Cr2O3; Multiphase; MECHANICAL-PROPERTIES;

D O I：

10.1016/j.ceramint.2016.08.200

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The Ruhrstahl-Heraeus (RH) snorkel is one of the most important parts of the RH furnace, which is the primary facility for producing high-quality steel. The magnesia-spinel refractory is the ideal replacement for the classic magnesia-chrome refractory in the RH snorkel. In this study, the effects of Cr2O3 addition (0-3 wt%) on properties of magnesia-spinel refractories were investigated. It was found that the addition of Cr2O3 results in the acceleration of the densification process and a decrease in the cold strength as well as a significant increase in the hot modulus of rupture. Thus, the solid solution formed with the spinel significantly improves the resistance to thermal shocks, with the greatest improvement being observed after the addition of 2 wt% Cr2O3. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：18579 / 18584

页数：6

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