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Generation of Pyroxene-Based Porous Ceramics from Steel Refining Slag

机译：从钢精炼渣产生辉石的多孔陶瓷

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摘要

In this paper, porous ceramics were prepared by controlling the composition and sintering temperature of raw materials based on slag from steel refining operations and without the need for a pore-forming agent. Solid-state processing included a phase transformation from low-density raw materials (2.10-2.90 g/cm~3) to high-density pyroxene-based ceramics (3.22-3.88 g/cm~3). Phase transformations and densifica-tion of porous ceramics were investigated by means of mercury intrusion, XRF, SEM and EDS. Results showed that a porous ceramic with optimum properties produced from raw material containing 35 wt.% steel refining slag, exhibited a high water absorption capacity of 31.62%, flexural strength of 18.26 MPa, porosity of 44.5% and an average pore diameter of 1.27 μm. Raw materials with high fineness or content near the pyroxene composition promoted formation of pyroxene and accordingly more volumetric shrinkage which enhanced both bending strength and porosity of the porous ceramics.
机译：本文通过基于钢精炼作用的炉渣控制原料的组合物和烧结温度，无需孔形成剂，制备多孔陶瓷。 固态加工包括低密度原料（2.10-2.90g / cm〜3）的相变，高密度辉石陶瓷（3.22-3.88g / cm〜3）。 通过汞侵入，XRF，SEM和EDS研究了多孔陶瓷的相变和密染性。 结果表明，具有由含有35重量％的原料生产的具有最佳性质的多孔陶瓷。％钢精炼渣，抗弯曲强度为18.26MPa，孔隙率为44.5％，平均孔径为1.27μm 。 在冰胞烯组合物附近具有高细度或含量的原料促进了辉石的形成，并因此提高了多孔陶瓷的弯曲强度和孔隙率的更多体积收缩。

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  • 来源
    《ISIJ international》 |2021年第7期|2041-2047|共7页
  • 作者

    Yu LI; Weitao TANG; Hongjian SHENG; Yindong YANG; Alex MCLEAN;

  • 作者单位

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 PR China;

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 PR China;

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 PR China;

    Dept. of Materials Science and Engineering University of Toronto 184 College Street Toronto ON M5S 3E4 Canada;

    Dept. of Materials Science and Engineering University of Toronto 184 College Street Toronto ON M5S 3E4 Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    porous ceramic; steel refining slag; volume shrinkage; solid-state sintering;

    机译：多孔陶瓷;钢精炼渣;体积收缩;固态烧结;

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