vacuum distillation refining of metallurgical grade silicon

  • Vacuum Refining of Molten Silicon SpringerLink

    Sep 26, 2012· Metallurgical fundamentals for vacuum refining of molten silicon and the behavior of different impurities in this process are studied. A novel mass transfer model for the removal of volatile impurities from silicon in vacuum induction refining is developed. The boundary conditions for vacuum refining system—the equilibrium partial pressures of the dissolved elements and their actual partial

  • Vacuum Refining of Molten Silicon Springer

    Metallurgical grade silicon contains around 99 wt pct silicon, and its impurities are generated from the raw principle of crude metal vacuum distillation. The vapor pressures of selected pure substances between 1673 K and 2273 K (1400 C and 2000 C) were REFINING OF SILICON In vacuum refining process, a volatile solute element

  • Calcium removal in purifying metallurgical-grade silicon

    The kinetics on vacuum refining process of metallurgical grade silicon was studied using maximum evaporation rate, critical pressure and mean free path of phosphorus in the metallurgical grade

  • Phosphorus removal from upgraded metallurgical-grade

    Dec 01, 2017· Vacuum distillation refining of metallurgical grade silicon (Ⅰ) —thermodynamics on removal of phosphorus from metallurgical grade silicon Trans. Nonferrous Met. Soc. China,17 ( S1 ) ( 2007 ),pp. 1022 1025

  • Phosphorus removal from upgraded metallurgical-grade

    Dec 10, 2020· Vacuum refining under the atmospheres of 8.0×10⁻³∼3.6×10⁻² Pa was applied for removing phosphorus, aluminium and calcium in metallurgical grade silicon (MG-Si)

  • Purification of metallurgical-grade silicon combining Sn

    The high consumption of chemical energy is inevitable in the Siemens process, because the conversion of metallurgical-grade silicon (MG-Si) to gaseous compounds is followed by distillation, reduction, and deposition into high-purity silicon. 1 Therefore, metallurgical refining, a promising process for producing SoG-Si, has gradually become a

  • Vacuum Refining of Molten Silicon Springer

    Metallurgical grade silicon contains around 99 wt pct silicon, and its impurities are generated from the raw principle of crude metal vacuum distillation. The vapor pressures of selected pure substances between 1673 K and 2273 K (1400 C and 2000 C) were REFINING OF SILICON In vacuum

  • Vacuum Refining of Molten Silicon SpringerLink

    Sep 26, 2012· Metallurgical grade silicon (MG-Si) is commercially produced through the reduction of silicon oxide with carbon in submerged arc furnaces.[] MG-Si is the initial material to produce pure silicon for electronics applications. The minimum required purity of silicon for photovoltaic applications and that for silicon

  • (PDF) Research on the Removal of Impurities from Crude

    The kinetics on vacuum refining process of metallurgical grade silicon was studied using maximum evaporation rate, critical pressure and mean free path of phosphorus in the metallurgical grade

  • Vacuum refining of silicon at ultra-high temperatures

    Feb 01, 2021· Several metallurgical methods are recently introduced for the removal of impurities from Si, such as slag refining,leaching refining,plasma refining,solvent refining,gas refining [8,9], and vacuum refining

  • Processes for Upgrading Metallurgical Grade Silicon to

    Metallurgical grade silicon (MG-Si) is the initial material to produce pure silicon for photovoltaic and distillation and deposition of silicon [2, 3]. Trichlorosilan (SiHCl vacuum refining and directional

  • Purification of metallurgical-grade silicon combining Sn

    The high consumption of chemical energy is inevitable in the Siemens process, because the conversion of metallurgical-grade silicon (MG-Si) to gaseous compounds is followed by distillation, reduction, and deposition into high-purity silicon. 1 Therefore, metallurgical refining

  • Refining Silicon PVEducation

    The impurity levels in metallurgical grade silicon5 vary widely due to process variation and the source raw materials of silica and carbon. Electronic Grade Silicon. A small amount of the metallurgical grade silicon

  • Low-temperature purification process of metallurgical silicon

    May 01, 2011· Vacuum distillation refining of metallurgical grade silicon (ĉ): Thermodynamics on removal of phosphorus from metallurgical grade silicon [J]. Transactions of Nonferrous Metals

  • Research on the Removal of Impurities from Crude Nickel by

    Jan 01, 2012· Vacuum distillation refining of metallurgical grade silicon ˄ĉË—Thermodynamics on removal of phosphorus from metallurgical grade silicon[J].

  • 魏奎先,男,副教授,硕士生导师

    Vacuum distillation refining of metallurgical grade silicon (II) Kinetics on removal of phosphorus from metallurgical grade silicon.Transactions of Nonferrous Metals Society of China, 2007, 17:

  • Study on Al Removal from MG-Si by Vacuum Refining

    Phosphorus removal from metallurgical grade silicon by CaO-SiO2-CaCl2 slag treatment, HCl leaching, and vacuum refining was investigated. The effect of different compositions of slag was

  • 真空熔炼1_百度文库

    Vacuum distillation refining of metallurgical grade silicon (Ⅰ) ——Thermodynamics on removal of phosphorus from metallurgical grade silicon WEI Kui-xian(魏奎先)1, 2, MA Wen-hui(马文会)1, 2,