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The Separation of Refined Silicon by Gas Pressure Filtration in Solvent Refining Process

机译：溶剂精制过程中气相压滤分离精制硅

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The separation of refined silicon by gas pressure filtration combined with solvent refining was studied. The purified silicon grains were separated by gas pressure filtration under a pressure differential of 0.2 MPa. In all of the systems, Al-40%Si, Sn-40%Si, Cu-40%Si, and Fe-80%Si, the effect of separation temperature (T) on separation efficiency was evaluated. In Al-40%Si alloy, the silicon content in separated silicon was 91.3 wt% and the recovery rate of silicon was 97.6%, at T = 600 °C. In Sn-40%Si alloy, almost all of the silicon was retained, and the silicon content in separated silicon was 79.4 wt% at T = 600 °C. For Cu-40%Si alloy and Fe-80%Si alloy, the silicon content in separated silicon was over 75 wt% under high superheat. With efficient removal of impurities, the combination of gas pressure filtration and solvent refining is a promising method.
机译：研究了气体加压过滤与溶剂精制相结合分离精制硅的工艺。在0.2MPa的压差下，通过气压过滤分离纯化的硅颗粒。在所有系统中，Al-40%Si、Sn-40%Si、Cu-40%Si和Fe-80%Si，都评估了分离温度（T）对分离效率的影响。在Al-40%Si合金中，在T=600°C时，分离硅中的硅含量为91.3 wt%，硅的回收率为97.6%。在Sn-40%Si合金中，几乎所有的硅都被保留，在T=600°C时，分离硅中的硅含量为79.4 wt%。对于Cu-40%Si合金和Fe-80%Si合金，在高过热度下，分离硅中的硅含量超过75 wt%。气体加压过滤与溶剂精制相结合，能有效去除杂质，是一种很有前途的方法。

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