Multiphase modelling of the continuous metallurgical purification process for impurity removing of recycled aluminum

With the vigorous development of the electronics industry today, study on the recycling of electronic waste has become an important and urgent subject nowadays. However, more work should be done on purification of recycled metal, especially metallurgical approaches which are more environmentally fri...

Full description

Saved in:
Bibliographic Details
Published inJournal of materials research and technology Vol. 18; pp. 830 - 840
Main Authors Xu, Xiaowei, Li, Jun, Dong, Zihui, Zeng, Long, Xu, Zhenming, Li, Jianguo
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2022
Elsevier
Subjects
Impurity
Macrosegregation
Recycled aluminum
Solidification modelling
Recycled aluminum
Macrosegregation
Impurity
Solidification modelling
Online AccessGet full text
ISSN2238-7854
DOI10.1016/j.jmrt.2022.03.003

Cover

More Information
Summary:With the vigorous development of the electronics industry today, study on the recycling of electronic waste has become an important and urgent subject nowadays. However, more work should be done on purification of recycled metal, especially metallurgical approaches which are more environmentally friendly. This study proposed a continuous metallurgic purification method to remove impurities from recycled aluminum. Numerical study via multiphase modelling was conducted to evaluate and optimize the purification efficiency of this metallurgic method. Parametric study was carried to analyze the influence of mold temperature and casting speed on purification efficiency. The simulation results showed that the method has great potential for purification of recovered metals, refining the aluminum from 2 N to 3 N within three cycles. The formation mechanism of Si macrosegregation region in the outer region of the rod has been discussed in detail, which indicates the key factor of the melt flow at the solidification front. The problem of purification process purely via thermal-solutal flow was stated and traveling magnetic field was introduced to further increase the purification efficiency. In general, this work provides a verified promising continuous metallurgical purification method for impurities removal from recycled aluminum.
ISSN:2238-7854
DOI:10.1016/j.jmrt.2022.03.003