Inorganic Chemicals Industry ›› 2022, Vol. 54 ›› Issue (7): 42-48.doi: 10.19964/j.issn.1006-4990.2021-0453

• Reviews and Special Topics • Previous Articles     Next Articles

Research progress on anti-oxidation technology of Al2O3-SiC-C castable

NI Wei(),LI Minghui(),LI Saisai,LI Canhua(),GAO Qingqing,Peng Jiayun   

  1. Anhui University of Technology School of Metallurgical Engineering,Maanshan 243002,China
  • Received:2021-07-28 Online:2022-07-10 Published:2022-07-14
  • Contact: LI Minghui,LI Canhua E-mail:nifelicity@163.com;goodminghui@163.com;licanhua@163.com

Abstract:

The anti-oxidation effect of Al2O3-SiC-C castable anti-oxidation technology and its influence on the material properties,composition and structure were summarized.According to the oxidation damage mechanism of carbon-containing refractories,two action forms of antioxidant,namely preferential carbon source oxidation method and optimized carbon source method were mainly analyzed.In addition to preferential oxidation of carbon sources to produce metal oxides and carbides to prevent the oxidation of carbon-containing materials,the anti-oxidant method could also improve the anti-oxidation effect by generating liquid equivalent substances through solid-phase reaction to block the pores in the materials,improve the density of the materials and prevent the entry of oxygen.The optimization of carbon source achieved a certain anti-oxidation effect by compound carbon source and adding coating on the surface of carbon source.The process characteristics of the three methods and the existing problems were described in detail,and the development direction was prospected,which provided a reference for the development of a new type of Al2O3-SiC-C castable anti-oxidation technology.

Key words: Al2O3, SiC, C, castable, anti-oxidation

CLC Number: