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Experimental Investigation of Relationship between Enthalpy Change and Viscosity in Blast Furnace Type Slags

机译：高炉渣炉渣焓变与黏度关系的实验研究

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摘要

The effects of MgO, Al_2O_3 and basicity on the heat capacity and enthalpy change of CaO-SiO_2-MgO-Al_2O_3 slags at 1 673 K and 1 773 K as well as the thermal stability were investigated. The enthalpy change at 1 773 K increased with the addition of Al_2O_3 and MgO, but decreased with increasing basicity. Thus, the higher basicity helped to reduce the heat consumption and fuel ratio of blast furnace. With increasing MgO content, the fluctuations of the temperature and viscosity caused by the reduction of the slag heat quantity decreased. Furthermore, the slag will have a better fluidity and thermal stability when MgO content is greater than 8 mass%. The increase of Al_2O_3 content deteriorated the fluidity and thermal stability of the slag to some extent. When the reduction of the slag heat quantity was fixed, as the basicity increased, the slag temperature increased obviously and the viscosity significantly decreased. Also, the fluctuations of slag temperature and viscosity became less pronounced with increasing basicity. The increase of the basicity was favorable to improve the fluidity and thermal stability of the slag. For the slag system of this experiment, the suitable basicity was 1.10-1.15.
机译：研究了MgO，Al_2O_3和碱度对CaO-SiO_2-MgO-Al_2O_3渣在1 673 K和1773 K时的热容量和焓变的影响以及热稳定性的影响。随着Al_2O_3和MgO的加入，在1773 K处的焓变增加，但随着碱度的增加而减小。因此，较高的碱度有助于降低高炉的热量消耗和燃料比。随着MgO含量的增加，由炉渣热量减少引起的温度和粘度波动减小。此外，当MgO含量大于8质量％时，炉渣将具有更好的流动性和热稳定性。 Al_2O_3含量的增加在一定程度上降低了炉渣的流动性和热稳定性。固定炉渣热量减少后，随着碱度的增加，炉渣温度明显升高，粘度显着降低。而且，随着碱度的提高，炉渣温度和粘度的波动变得不那么明显。碱度的增加有利于提高炉渣的流动性和热稳定性。对于该实验的炉渣系统，合适的碱度为1.10-1.15。

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  • 来源
    《ISIJ international》 |2019年第1期|39-45|共7页
  • 作者

    Zhi Yu CHANG; Ke Xin JIAO; Jian Liang ZHANG; Xiao Jun NING;

  • 作者单位

    School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083 China;

    School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083 China;

    School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083 China,School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072 Australia;

    School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083 China;

  • 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

    slag; heat capacity; enthalpy change; viscosity; thermal stability;

    机译：矿渣;热容量焓变粘度热稳定性;

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