• Volume 38 Issue 11
    Jul.  2021
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    LIU Lei, SUN Wen-jie, ZHANG Ling-xi, LI Xue-hui. Study on the properties of MgO-Fe-C bricks as the linings of vanadium-extraction converters[J]. Chinese Journal of Engineering, 2016, 38(11): 1590-1595. doi: 10.13374/j.issn2095-9389.2016.11.012
    Citation: LIU Lei, SUN Wen-jie, ZHANG Ling-xi, LI Xue-hui. Study on the properties of MgO-Fe-C bricks as the linings of vanadium-extraction converters[J]. Chinese Journal of Engineering, 2016, 38(11): 1590-1595. doi: 10.13374/j.issn2095-9389.2016.11.012

    Study on the properties of MgO-Fe-C bricks as the linings of vanadium-extraction converters

    doi: 10.13374/j.issn2095-9389.2016.11.012
    • Received Date: 2015-09-21
      Available Online: 2021-07-28
    • To extend the service life of MgO-C bricks which used as the linings of vanadium-extraction converters, MgO-Fe-C bricks were fabricated in this study. The service properties of this novel refractory were comparatively investigated between traditional MgO-C bricks and MgO-Fe-C bricks. The results show that the poor sinterability and anti-erosion property of the decarburized layer at the service temperature of 1400 ℃ are responsible for the short service life of MgO-C bricks. However, for MgO-Fe-C bricks, Fe particles are oxidized in the oxidized layer and in-situ MgO-FeOss forms under the working condition. This can effectively improve the sintering performance, form a decarburized layer with enhanced compactness and bonding strength, and significantly improve the oxidation resistance and slag corrosion resistance of this layer, contributing to extend the service life. MgO-Fe-C bricks have a promising prospect of applications in the substitute for MgO-C bricks as the linings of vanadium-extraction converters.

       

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