耐火与石灰 ›› 2021, Vol. 46 ›› Issue (2): 26-28.

• 综述 • 上一篇    下一篇

ρ-Al2O3结合莫来石-刚玉浇注料的研制和应用

王德军  郁书中  胡正阳  段春云   

  1. 瑞泰马钢新材料科技有限公司, 马鞍山243000
  • 出版日期:2021-04-10 发布日期:2021-04-19

Development and application of ρ-Al2O3 bonded mullite-corundum castables

Wang Dejun  Yu Shuzhong  Hu Zhengyang  Duan Chunyun   

  1. Ruitai Masteel New Material Technology Co.,Ltd., Ma’anshan 243000, China
  • Online:2021-04-10 Published:2021-04-19

摘要:

采用ρ-Al2O3替代铝酸钙水泥作为结合剂,以莫来石和板状刚玉为主料,加入一定量的白刚玉细粉、α-Al2O3微粉、SiO2微粉、蓝晶石、金属铝粉和钢纤维以及防爆纤维、聚羧酸盐减水剂和复合调节剂,研制莫来石-刚玉浇注料。制成的中间包包盖在某钢厂使用,使用寿命达21次(185炉),较传统的铝酸钙水泥结合中间包包盖使用寿命平均约提高50%~60%,满足钢厂连铸技术的要求。

关键词: ρ-Al2O3, 莫来石-刚玉浇注料, 中间包包盖

Abstract:

Mullite-corundum castables has been developed by using ρ-Al2O3 instead of calcium aluminate cement as binder,with mullite and tabular corundum as main materials,adding a certain amount of white corundum fine powder,α-Al2O3 micro powder,SiO2 micro powder,kyanite,aluminum metal powder and steel fiber,as well as explosion-proof fiber,polycarboxylate superplasticizer and composite regulator.Such produced tundish cover has been applied in a steel works,whose service life is up to 21 cycles (185 furnaces),and 50%~60% higher than that of the traditional calcium aluminate cement bonded ones on average,meeting the requirements of continuous casting technology.

Key words: ρ-Al2O3, Mullite-corundum castables, Tundish cover

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