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首页> 外文期刊>Metallurgical Research & Technology >Comparison between slag refining processes for B removal with metallurgical grade silicon and Si-Sn alloy
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Comparison between slag refining processes for B removal with metallurgical grade silicon and Si-Sn alloy

机译：冶金级硅和Si-Sn合金B脱离炉渣精制工艺的比较

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摘要

Boron (B) removal by slag refining using CaO SiO2 CaCl2 was investigated in metallurgical-grade silicon (MG-Si) and 75 wt% Si Sn alloy. Experiments were conducted at 1500 degrees C for 15 min. The microstructure was characterized before and after refining. The effects of acid leaching, basicity, and slag/Si mass ratio on B removal were investigated. Experimental results showed that acid leaching had no effect on B removal from MG-Si but had a clear effect on the refined Si Sn alloy after slag refining The final B concentration was highly affected by the CaO/SiO2 mass ratio with minimum value, where the content of B was reduced from 18.36 ppmw to 5.5 ppmw at the CaO/SiO2 - 1.2 for MG-Si slag refining and from 18.36 ppmw to 3.7 ppmw at CaO/SiO2 - 1.5 for 75 wt% Si Sn alloy. Increasing the slag mass ratio by 2:1 mass ratio also increased B removal efficiency by approximately 15 20% more than an increase by 1:1.
机译：在冶金级硅（Mg-Si）和75wt％Si Sn合金中，研究了使用CaO SiO 2 CaCl 2的熔渣精制除去硼（B）除去。 实验在1500℃下进行15分钟。 微观结构在精炼之前和之后的特征在于。 研究了酸浸出，碱度和渣/ Si质量比对B去除的影响。 实验结果表明，酸浸出对Mg-Si的除去没有影响，但在渣精制后对精制的Si Sn合金具有明显的效果，最终B浓度受到最小值的最小值的高度影响，其中 B的含量为18.36ppmw至5.5 ppmw，在CaO / SiO 2 - 1.2中，对于Mg-Si渣精制，18.36ppmw至3.7 ppmw，在CaO / SiO 2 - 1.5，对于75wt％Si Sn合金。 将炉渣质量比增加2：1质量比也增加了B去除效率大约150％以上增加1：1。

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