A review of hydrometallurgy techniques for the removal of impurities from metallurgical-grade silicon

F **, S Li, W Ma, Z Chen, K Wei, J Wu - Hydrometallurgy, 2021 - Elsevier
Hydrometallurgy is considered a promising method to produce solar-grade silicon (SOG-Si)
from metallurgical-grade silicon (MG-Si) due to its advantages of low cost, simple operation …

Slag refining of silicon and silicon alloys: a review

A Hosseinpour, L Tafaghodi Khajavi - Mineral Processing and …, 2018 - Taylor & Francis
Silicon is considered as the most appropriate semiconductor material for manufacturing
solar cells because of its abundance in the earth's crust and its nontoxicity. One of the main …

Enhanced acid leaching of metallurgical grade silicon in hydrofluoric acid containing hydrogen peroxide as oxidizing agent

H Lai, L Huang, C Gan, P **ng, J Li, X Luo - Hydrometallurgy, 2016 - Elsevier
The effect of hydrogen peroxide as a novel oxidizing agent on purifying metallurgical grade
silicon (MG-Si) by leaching with hydrofluoric acid was investigated as a function of …

[HTML][HTML] Phosphorus separation from metallurgical-grade silicon by magnesium alloying and acid leaching

M Zhu, A Azarov, E Monakhov, K Tang… - Separation and …, 2020 - Elsevier
In this paper, the separation of phosphorus from metallurgical-grade silicon was investigated
based on an Mg alloying and HCl leaching approach. Experimental results show that P …

Application of pressure-less sintering and dynamic-slag treatment to recover diamond wire saw silicon powder

G Chen, W Sheng, L Huang, Y Zhang… - ACS Sustainable …, 2020 - ACS Publications
Recycling silicon from environmentally hazardous diamond wire saw silicon powder waste
(DWSSP) and effectively removing boron is still an elusive aim. Here, pressure-less sintering …

Thermodynamics and kinetics of boron removal from metallurgical grade silicon by addition of high basic potassium carbonate to calcium silicate slag

J Wu, F Wang, W Ma, Y Lei, B Yang - Metallurgical and Materials …, 2016 - Springer
In this study, we investigated the thermodynamics and kinetics of boron removal from
metallurgical grade silicon (MG-Si) using a calcium silicate slag containing a high basic …

Hydrometallurgical purification of metallurgical grade silicon with hydrogen peroxide in hydrofluoric acid

H Lai, L Huang, H **ong, C Gan, P **ng… - Industrial & …, 2017 - ACS Publications
The effect of adding hydrogen peroxide (H2O2) as an oxidizing agent on purifying
metallurgical grade silicon (MG-Si) by leaching with hydrofluoric acid (HF) was studied as a …

Extraction of phosphorus from metallurgical grade silicon using a combined process of Si-Al-Ca solvent refining and CaO-CaF2 slag treatment

C Zhang, H Lai, Y Zhang, Z Sheng, J Li, P **ng… - Separation and …, 2020 - Elsevier
A combined purification process of Si-Al-Ca solvent refining and CaO-CaF 2 slag treatment
was investigated with a focus on removing phosphorus (P) from metallurgical-grade Si (MG …

Thermodynamic properties of impurity components in silicon-based solutions: influence of interactions among components on impurity removal from silicon

Q He, J Wu, F Yang, Y Zhou, K Liu… - Separation & Purification …, 2022 - Taylor & Francis
The thermodynamic properties of impurities in silicon-based solutions are the theoretical
basis of silicon purification technology. These properties represent valuable information in …

Enhancing the removal of Fe and Ti from metallurgical silicon by slagging-directional solidification

Z Zhang, H Li, X Guo, Y Wang, Y Hao, H Wang… - Vacuum, 2024 - Elsevier
Metallurgical preparation of solar-grade silicon is the most popular method, benefiting from
the low costs and environmentally friendly. The paper employed a metallurgical method to …