作者：GUO Zongqi,MA Ying,NEUBOECK Rainer,KOECK Andreas

作者单位：1 RHI MAGENSITA (Dalian) Co., Ltd.,2 RHI MAGNESITA TCL

会议录名称：Conference on Refractories International 2018

出版年：2018-10-17

起页：1

止页：7

总页数：7

馆藏号：

分类号：TQ175

语种：英文

会议名称：Conference on Refractories International 2018

会议地点：中国浙江杭州

会议时间：2018-10-17

会议主办者：中钢集团洛阳耐火材料研究院,中国金属学会耐火材料分会,耐火材料杂志社,先进耐火材料国家重点实验室

关键词：

内容简介

Resin-bonded, Al-containing magnesiarefractories have been an alternative of rebondedfused-grains magchrome bricks to be used as innerlining in the snorkels and lower vessel of RHdegassers, having the advantages of being chromefree and energy-saving (without burning), with a comparable performance. Microstructural investigations indicate that metal Al powder remains independent in the matrix after heating at 700掳C and 900掳C, and Al4C3, Al2OC and Al4O4C crystalline whiskers start forming from 1100掳C. The whiskers grow and connect into a network matrix with increasing temperatures, remaining up to 1600掳C.Comparison of used bricks from different snorkels indicates a strong whisker networks formation in the brick achieving long service life and superior performance, which is attributed to flexible network structure of stable and interwoven whiskers.