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Behavior of Slag in Ferromanganese and Silicomanganese Smelting Process
Metallurgical and Materials Transactions B ( IF 3 ) Pub Date : 2021-06-29 , DOI: 10.1007/s11663-021-02242-2
Young E. Lee , Leiv Kolbeinsen

A review of studies by Safarian et al. and Kim show that the smelting reaction at equilibrium for ferromanganese and silicomanganese alloys is defined by the coupled reaction in the carbon-saturated condition \( 2\underline{\text{Mn}} + \, \left( {{\text{SiO}}_{ 2} } \right) \, = { 2 }\left( {\text{MnO}} \right) \, + \underline{\text{Si}} \). The behavior of slag at equilibrium is described by MnO and SiO2 as dependent variables and by non-reacting species, CaO, MgO, and Al2O3, as independent variables. Its characteristic behaviors are assessed in the pseudobinary system of MnO and SiO2 fixed by non-reacting components with analyses of ferromanganese and silicomanganese slag from one-month smelting operations. The behavior of fluid slag is defined by their melting temperature provided by phase equilibria of slag system. Liquidus of manganese slag systems by Kang et al., Zhao et al., and Roghani et al. is reconstructed in coordinates of MnO and SiO2 at fixed contents of CaO, MgO, and Al2O3. Conditions for fluid smelting slag are examined by referencing characteristic behaviors of smelting slag to liquidus of manganese slag systems to assess the effect of MgO and Al2O3. MgO facilitates fluid silicomanganese slag but would make ferromanganese slag viscous. Al2O3 makes silicomanganese slag fluid at Al2O3 content with 0.41 by weight ratio to SiO2. At higher contents of Al2O3, silicomanganese slag would be viscous with low MnO contents in slag. Al2O3 facilitates the development of fluid ferromanganese slag.



中文翻译:

锰铁硅锰冶炼过程中渣的行为

Safarian等人的研究综述和 Kim 表明,锰铁和硅锰合金的平衡冶炼反应由碳饱和条件下的耦合反应定义\( 2\underline{\text{Mn}} + \, \left( {{\text{SiO }}_{ 2} } \right) \, = { 2 }\left( {\text{MnO}} \right) \, + \underline{\text{Si}} \)。炉渣在平衡状态下的行为由作为因变量的 MnO 和 SiO 2和作为自变量的非反应物质 CaO、MgO 和 Al 2 O 3描述。其特征行为在 MnO 和 SiO 2的伪二元体系中进行评估通过对一个月冶炼操作中的锰铁和硅锰渣进行分析,通过非反应成分进行修复。熔渣的行为由熔渣系统的相平衡提供的熔化温度定义。Kang等人的锰渣系统的液相线,赵等人。,和 Roghani等人。在CaO、MgO 和 Al 2 O 3 的固定含量下,在MnO 和 SiO 2 的坐标中重建。参考熔炼渣的特征行为对锰渣体系液相线的影响,研究流体熔炼渣的条件,以评估MgO和Al 2 O 3 的影响. MgO 有利于硅锰渣的流动,但会使锰铁渣变粘。Al 2 O 3使Al 2 O 3含量与SiO 2重量比为0.41的硅锰渣流体。在较高的 Al 2 O 3含量下,硅锰渣会变得粘稠,而渣中的 MnO 含量较低。Al 2 O 3促进流体锰铁渣的形成。

更新日期:2021-06-30
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