Refining of Metallurgical Grade Silicon by Acid Leaching

Dong Liang Lu; Yu Yan Hu; Tao Lin; Yu Liu; Bo Wang; Yan Hui Sun; Hong Yu Chen; Qian Shu Li

doi:10.4028/www.scientific.net/AMR.156-157.566

Paper Titles

Model Construction and Application of Integration Cellular Manufacturing System
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Structural Line Shape and Stress Analysis in the Construction of Kaziwan Bridge
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Research on Mechanical Characteristic of a Self-Force-Amplifier Damper
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Evolutionary Design Optimization on Automated Mechanical Transmission of Automobile
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Refining of Metallurgical Grade Silicon by Acid Leaching
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Efficient Tool Path Planning for Machining an Impeller with a 5-Axis NC Machine
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Reliability-Based Multidisciplinary Design Optimization for Centrifugal Compressor Using the Fourth Moment Method
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Research on a New Type of Metal Composite Material in Hot Forming and its Application
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Simulation of Rolling Resistance of Tire Based on ANSYS
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 156-157Refining of Metallurgical Grade Silicon by Acid...

Refining of Metallurgical Grade Silicon by Acid Leaching

Abstract:

Solar grade silicon (SoG-Si) is the key material for photovoltaic applications. In this study, the silicon grain size, concentration of HF, leaching time and leaching temperature were investigated by orthogonal methods. The results showed that the silicon grain size is the most important factor for the purification of silicon. Furthermore, the obvious removal efficiency of iron and aluminum was observed when the mannitol used as the chelated reagent in HF leaching process. Inductive coupled plasma atomic emission spectroscopy (ICP-AES) results indicated that the purity of the samples improved to a large extent with the chelated reagent.