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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Thermodynamic evaluation of Sr-containing Si metals and silicate melts for Si-Sr alloy production
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Thermodynamic evaluation of Sr-containing Si metals and silicate melts for Si-Sr alloy production

机译：用于Si-SR合金生产的含Sr的Si金属和硅酸盐熔融的热力学评价

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摘要

Reliable thermodynamic descriptions of the Si-based Sr-Al-Ca-Fe-Mg metal system and SiO_2-SrO-CaO-MgO-Al203 oxide system are essential for the understanding and optimizing the production of Si-Sr alloys. Phase relations of all SrO containing binary and ternary subsystems were evaluated and thermodynamically modelled based on the existing literature data. Phase equilibria in the SiO_2-SrO-CaO-MgO-Al_2O_3 higher-order oxide system were thus possible to calculate by the CALPHAD method. A thermodynamic description of the Si-Sr-Al-Ca-Fe-Mg metal system was developed based on assessment of all binary systems as well as all Si containing ternary subsystems. The newly developed thermochemical databases can be used to calculate the equilibrium distribution of Sr between metal and slag. The theoretical Sr distribution maps for both pure Si and 75FeSi alloys in different SrO-containing slags are reported.
机译：Si的SR-Al-Ca-Fe-Mg金属系统和SiO_2-SRO-CAO-MGO-AL203氧化物系统的可靠热力学描述对于了解和优化Si-Sri合金的生产至关重要。 基于现有文献数据评估和热力地建模所有包含二进制和三元子系统的相位关系。 因此，可以通过Calphad方法计算SiO_2-SRO-CAO-MgO-AL_2O_3高阶氧化物系统中的相平衡。 基于对所有二元系统的评估以及含有三元子系统的所有Si的评估开发了Si-SR-Al-Ca-Fe-Fe-Mg金属系统的热力学描述。 新开发的热化学数据库可用于计算金属和炉渣之间Sr的平衡分布。 报道了不同SRO的炉渣中的纯Si和75fesi合金的理论SR分布图。

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