China's Refractories

《中国耐火材料》英文版

China's Refractories ›› 2022, Vol. 31 ›› Issue (1): 35-44.DOI: 10.19691/j.cnki.1004-4493.2022.01.006

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Recent Progress on Al2O3-C Refractories with Low/ultra-low Carbon Content:A Review

ZHAO Chenrui1,*(), YAN Mingwei2, LI Hongyu1, NIU Zhiwang1, LIANG Baoqing1, SHANG Junli1   

  1. 1 Henan Rongjin High Temperature Materials Co., Ltd., Weihui 453100, China
    2 State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering,Chinese Academy of Sciences, Beijing 100190, China
  • Online:2022-03-15 Published:2022-04-02
  • Contact: ZHAO Chenrui
  • About author:Zhao Chenrui got his bachelor’s degree in Shaanxi University of Science and Technology in 2010, and his master’s degree in Sinosteel Luoyang Institute of Refractories Research Co., Ltd. in 2013. Now he is working in Henan Rongjin High Temperature Materials Co., Ltd., as a director of the research and development center. He is engaged in research and development of slide gate nozzle refractories and unshaped refractories for ladles, tundishes and converters. He has accumulated some experience in the design, production and application of slide gate nozzle refractories.

Abstract:

This work intends to provide a comprehensive review on the development of Al2O3-C refractories with low/ultra-low carbon content. It covers three parts: carbon materials, microstructure optimization of the refractory matrix by ceramic phases, and application of metal Al as raw material. Carbon black, expanded graphite, and ultrafine microcrystalline graphite, as price-competitive carbon materials, can be chosen to prepare the low-carbon Al2O3-C refractories after some special treatment. Ni/Co/Fe-catalyzed phenolic resin contributes to improving the properties of the low-carbon Al2O3-C refractories. The performance deterioration of the low-carbon Al2O3-C refractories can also be improved by in-situ formed or pre-synthesized ceramic phases. Metal Al, characterized by plasticity forming, acceleration of sintering, oxidation resistance, and high reactivity, can be used as raw materials to completely replace graphite, and the prepared resin bonded Al-Al2O3 based refractories are one novel development direction of the ultra-low carbon Al2O3-C refractories.

Key words: low carbon, carbon source, alumina-carbon refractories, ceramic phases, aluminum