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Volume 24 Issue 2
Feb.  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(2): 186-193
Bin Long, Gui-ying Xu, and Buhr Andreas, Microstructure and physical properties of steel-ladle purging plug refractory materials, Int. J. Miner. Metall. Mater., 24(2017), No. 2, pp. 186-193. https://doi.org/10.1007/s12613-017-1394-5
Cite this article as:
Bin Long, Gui-ying Xu, and Buhr Andreas, Microstructure and physical properties of steel-ladle purging plug refractory materials, Int. J. Miner. Metall. Mater., 24(2017), No. 2, pp. 186-193. https://doi.org/10.1007/s12613-017-1394-5
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研究论文

Microstructure and physical properties of steel-ladle purging plug refractory materials

  • School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

  • Almatis Qingdao Co., Ltd., Qingdao 266071, China

  • Almatis GmbH, Frankfurt 60528, Germany

  • 通讯作者:

    Gui-ying Xu    E-mail: guiyingxu@126.com

  • Three different castables were prepared as steel-ladle purging-plug refractory materials:corundum-based low-cement castable (C-LCC), corundum-spinel-based low-cement castable (C-S-LCC), and no-cement corundum-spinel castable (C-S-NCC) (hydratable alumina ρ-Al2O3 bonded). The properties of these castables were characterized with regard to water demand/flow ability, cold crushing strength (CCS), cold modulus of rupture (CMoR), permanent linear change (PLC), apparent porosity, and hot modulus of rupture (HMoR). The results show the CCS/CMoR and HMoR of C-LCC and C-S-LCC are greater than those of the castable C-S-NCC. According to the microstructure analysis, the sintering effect and the bonding type of the matrix material differ among the three castables. The calcium hexaluminate (CA6) phase in the matrix of C-LCC enhances the cold and hot mechanical strengths. In the case of C-S-LCC, the CA6 and 2CaO·2MgO·14Al2O3 (C2M2A14) ternary phases generated from the matrix can greatly increase the cold and hot mechanical strengths. In the case of the no-cement castable, sintering becomes difficult, resulting in a lower mechanical strength.
    • Research Article

    Microstructure and physical properties of steel-ladle purging plug refractory materials

    + Author Affiliations
      Abstract
    • Three different castables were prepared as steel-ladle purging-plug refractory materials:corundum-based low-cement castable (C-LCC), corundum-spinel-based low-cement castable (C-S-LCC), and no-cement corundum-spinel castable (C-S-NCC) (hydratable alumina ρ-Al2O3 bonded). The properties of these castables were characterized with regard to water demand/flow ability, cold crushing strength (CCS), cold modulus of rupture (CMoR), permanent linear change (PLC), apparent porosity, and hot modulus of rupture (HMoR). The results show the CCS/CMoR and HMoR of C-LCC and C-S-LCC are greater than those of the castable C-S-NCC. According to the microstructure analysis, the sintering effect and the bonding type of the matrix material differ among the three castables. The calcium hexaluminate (CA6) phase in the matrix of C-LCC enhances the cold and hot mechanical strengths. In the case of C-S-LCC, the CA6 and 2CaO·2MgO·14Al2O3 (C2M2A14) ternary phases generated from the matrix can greatly increase the cold and hot mechanical strengths. In the case of the no-cement castable, sintering becomes difficult, resulting in a lower mechanical strength.
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      • References(17)
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