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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Solar Cell Silicon
Presentation Title Boron Removal from Ferrosilicon Alloy via Slag Treatment
Author(s) Ali Hosseinpour, Leili Tafaghodi
On-Site Speaker (Planned) Ali Hosseinpour
Abstract Scope In a new approach to metallurgical refining of silicon, a combination of slag treatment and solvent refining is used in order to remove boron from silicon. In this process, silicon is initially alloyed with iron (as a solvent metal) to produce an alloy of 80% Si-20% Fe. Various compositions of Al2O3-SiO2-CaO slag were used to find the optimum composition for boron removal. The partition ratio of boron between the slag and Si-Fe alloy at 1873 K (1600 ○C) was determined using the B concentrations obtained by ICP-OES.
Proceedings Inclusion? Planned:


A Low-cost and Novel Strategy for Inverted Pyramid Arrays Texturing of DWS mc-Si Wafers
A Review of Solar Silicon Recycling
Boron Removal from Ferrosilicon Alloy via Slag Treatment
Crystal Growth Mechanism of Si in Hypereutectic Al-Si Melt during the Electromagnetic Directional Solidification
Enhancement of Efficiency in Nanostructured-Si Solar Cells by Employing Doped-graphene Transparent Conductive Electrodes
Influence of Chemical and Heat Treatment on the Properties of Disi Raw Sandstones in Jordan
K-17: High Temperature Pressure Filtration Applying for Separation of Silicon and Liquation Agent
K-18: Leaching of Indium from ITO Present in Amorphous Silicon Photovoltaic Modules
K-19: The Effect of Rapid Heat Treatment on Crystal Defect Evolution and Electrical Properties of the Original High Efficient Polycrystalline Silicon
Removal Impurities from Metallurgical Silicon by Slag Treatment Combined with Acid Leaching
Solar Silicon by Direct Carbothermic Reduction - Review and Outlook
Structure Nature of Boron Removal from Silicon in Slagging Refining: A Raman Spectroscopy and NMR Spectroscopy Study
The Mechanism of Boron Removal from Silicon Alloy by Electric Field Using Slag Treatment
Thermo-Calc of the Phase Diagram of Calcium Silicon (Ca-Si) System
Thermo-Calc of the Phase Diagram of the Fe-Si System
Three-dimensional Crystal-plasticity based Model for Intrinsic Stresses in Multi-junction Photovoltaic
Ultrathin Crystalline Silicon Solar Cell Preparation through Molten Salt Electrolysis

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