Low-temperature enhancement in the extraction of phosphorus from metallurgical-grade silicon by simultaneously re-constructing phosphorus-rich phases of Ca3P2 and CaAl2Si2-P

被引：0

作者：

Liang, Jinshan ^{[1
]}

Zhang, Yanzhe ^{[1
]}

Huang, Xinping ^{[1
]}

Li, Juncheng ^{[1
,2
]}

Zhao, Qing ^{[3
]}

Li, Yabo ^{[1
]}

Li, Jingwei ^{[4
]}

机构：

[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China

[2] Yunnan Normal Univ, Coll Energy & Environm Sci, Kunming 650500, Peoples R China

[3] Northeastern Univ, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China

[4] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China

来源：

METALLURGICAL RESEARCH & TECHNOLOGY | 2024年 / 121卷 / 03期

关键词：

metallurgical-grade silicon; phosphorus impurity; solvent refining; salt treatment; dephosphorization; REMOVAL; SI; PURIFICATION; MECHANISM;

D O I：

10.1051/metal/2024037

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A novel method of combined Si-Al solvent refining with CaCl2-CaF2-CaO molten salt treatment for phosphorus removal from metallurgical-grade silicon was investigated. With the mass ratio of salt (45 wt.%CaCl2-45 wt.%CaF2-10 wt.%CaO) to the alloy (phosphorus-doped Al-Si) being 1:1, phosphorus-rich phases of Ca3P2 and CaAl2Si2-P were successfully reconstructed at 1250 degrees C for 1 h. After acid leaching, phosphorus content decreased from 3 wt.% to 0.24 wt.%, corresponding to a phosphorus removal rate of 91.95%.

引用

页数：6

共 22 条

[1] Application of slag refining technique to metallurgical grade silicon purification process: A review
Al-khazraji, Rowaid
Li, Yaqiong
Zhang, Lifeng
[J]. FUNCTIONAL MATERIALS, 2018, 25 (02): : 364 - 370
[2] Effect of kinetics on P removal by Al-Si solvent refining at low solidification temperature
Ban, Boyuan
Bai, Xiaolong
Li, Jingwei
Chen, Jian
Dai, Songyuan
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 685 : 604 - 609
[3] Study on Reaction Mechanism of Reducing Dephosphorization of Fe-Ni-Si Melt by CaO-CaF2 Slag
Chen, Pei-Xian
Zhang, Guo-Hua
Chu, Shao-Jun
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2016, 47 (01): : 16 - 18
[4] The behavior of Ca and its compounds in Si during the slag refining with CaO-SiO2-CaF2 system under air atmosphere
Cheng, Haoran
Zheng, Songsheng
Chen, Chao
[J]. SEPARATION AND PURIFICATION TECHNOLOGY, 2018, 201 : 60 - 70
[5] Purification of Metallurgical-Grade Silicon by Acid Leaching
Ebrahimfar, Farzad
Ahmadian, Mandi
[J]. SILICON, 2019, 11 (04) : 1979 - 1987
[6] SOLVENT REFINING OF METALLURGICAL GRADE SILICON
GUMASTE, JL
MOHANTY, BC
GALGALI, RK
SYAMAPRASAD, U
NAYAK, BB
SINGH, SK
JENA, PK
[J]. SOLAR ENERGY MATERIALS, 1987, 16 (04): : 289 - 296
[7] A review of the process on the purification of metallurgical grade silicon by solvent refining
He, Yunfei
Ma, Wenhui
Xing, Aimin
Hu, Mingshi
Liu, Shicheng
Yang, Xi
Li, Jiawang
Du, Shuzhong
Zhou, Wanli
[J]. MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2022, 141
[8] Boron removal from silicon melt by gas blowing technique
Hoseinpur, Arman
Andersson, Stefan
Mueller, Michael
Tang, Kai
Safarian, Jafar
[J]. HIGH TEMPERATURE MATERIALS AND PROCESSES, 2022, 41 (01) : 69 - 91
[9] Vacuum refining of silicon at ultra-high temperatures
Hoseinpur, Arman
Safarian, Jafar
[J]. VACUUM, 2021, 184
[10] Evaporation Behavior of Phosphorus from Metallurgical Grade Silicon via Calcium-Based Slag Treatment and Hydrochloric Acid Leaching
Huang, Liuqing
Lai, Huixian
Lu, Chenghao
Fang, Ming
Ma, Wenhui
Xing, Pengfei
Luo, Xuetao
Li, Jintang
[J]. JOURNAL OF ELECTRONIC MATERIALS, 2016, 45 (01) : 541 - 552

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