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Composition Changes of Inclusions by Reaction with Slag and Refractory: A Review

机译：用渣和耐火反应构成夹杂物的变化：综述

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摘要

Precise control on inclusions is of great importance for improving steel quality. In secondary refining, three types of inclusion are generally observed in Al-killed steel: Al_2O_3, MgO·Al_2O_3 spinel, and CaO-Al_2O_3 type. Many researchers have reported on inclusions transformed in the routine of Al_2O_3 → MgO·Al_2O_3 spinel CaO-Al_2O_3 during secondary refining in Al-killed steel. The deoxidizer of Al is intentionally added to the steel, and Al_2O_3 inclusions are formed as a deoxidation product. However, MgO·Al_2O_3 spinel and CaO-Al_2O_3-type inclusions have been observed even without any intentional Mg or Ca addition. Therefore, it is important to clarify the source of Mg and Ca causing MA spinel and CaO-Al_2O_3-type inclusions formation, in order to control the compositions of the inclusions. Regarding to this phenomenon, a good review was published by Park and Todoroki in 2010. Several studies have since been conducted. This paper summarized the research activities on the composition changes of inclusions during secondary refining from the aspect of thermodynamics and kinetics.
机译：夹杂物的精确控制对于提高钢质质量非常重要。在二次精炼中，在Al杀钢中通常观察到三种夹杂物：Al_2O_3，MgO·Al_2O_3尖晶石和CaO-Al_2O_3型。许多研究人员报道了在Al_2O_3→MgO·MgO·Al_2O_3尖晶石CaO-Al_2O_3的常规中转化的夹杂物，在Al杀钢中的二级精炼期间。 Al的脱氧剂是有意地添加到钢中的，并且Al_2O_3夹杂物形成为脱氧产物。然而，已经观察到MgO·Al_2O_3尖晶石和CaO-Al_2O_3型夹杂物即使没有任何有意的Mg或Ca添加。因此，重要的是澄清Mg和Ca的来源，导致MA尖晶石和CaO-Al_2O_3型夹杂物形成，以控制夹杂物的组成。关于这种现象，2010年通过Park和Todoroki发表了一份良好的评论。自此进行了几项研究。本文总结了从热力学和动力学方面的继发性炼制过程中夹杂物组成变化的研究活动。

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  • 来源
    《ISIJ international》 |2020年第9期|1835-1848|共14页
  • 作者

    Chunyang LIU; Xu GAO; Shigeru UEDA; Muxing GUO; Shin-ya KITAMURA;

  • 作者单位

    Steelmaking Plant of Beijing Shougang Co. LTD No. 25 Zhao'an Street Western Industrial Zone Qian'an Tangshan Hebei 64400 China;

    Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira Aoba-ku Sendai Miyagi Japan;

    Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira Aoba-ku Sendai Miyagi Japan;

    Department of Materials Engineering KU Leuven Kasteelpark Arenberg 44 - box 2450 Leuven 3001 Belgium;

    Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira Aoba-ku Sendai Miyagi Japan;

  • 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

    inclusion; Al_2O_3; MgO; spinel; calcium aluminate; thermodynamic; kinetics;

    机译：纳入;al_2O_3;MgO;尖晶石;钙铝酸盐;热力学;动力学;

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