A New Pyrometallurgical Recycling Technique for Lead Battery Paste without SO2 Generation

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
Conference article in proceedings
This publication is imported from Aalto University research portal.
View publication in the Research portal
View/Open full text file from the Research portal
Date
2018
Major/Subject
Mcode
Degree programme
Language
en
Pages
1109-1120
Series
Extraction 2018, The Minerals, Metals & Materials Series
Abstract
An innovative lead recycling process from scrap lead-acid battery paste is presented. The novelty in the process is avoiding SO2 generation and emission by using reductive sulfur-fixing technique. Iron-bearing secondary wastes produced from metallurgical industry were utilized as sulfur-fixing agent to capture sulfur in the form of FeS (s) instead of generation of SO2 (g). Molten Na2CO3 salt was added to the smelting system to speed the reactions and improve valuable metals’ recovery and sulfur-fixation efficiency. Furthermore, this process can simultaneously co-treat various lead and iron-bearing wastes. At the same time, some precious metals, such as Au and Ag, contained in iron-bearing wastes can be recovered. The feasibility and reliability of this process was investigated thermodynamically and experimentally with the help of HSC 9.0 database and XRD and SEM-EDS analysis. A possible reaction mechanism and path in PbSO4-Fe2O3-Na2CO3-C smelting system was also clarified.
Description
https://www.springerprofessional.de/extraction-2018/16053724?tocPage=1
Keywords
Other note
Citation
Li , Y , Chen , Y , Tang , C , Yang , S , Klemettinen , L , Rämä , M , Wan , X & Jokilaakso , A 2018 , A New Pyrometallurgical Recycling Technique for Lead Battery Paste without SO2 Generation : A Thermodynamic and Experimental Investigation . in Extraction 2018 : Proceedings of the First Global Conference on Extractive Metallurgy . The Minerals, Metals & Materials Series , Springer , pp. 1109-1120 , Global Conference on Extractive Metallurgy , Ottawa , Ontario , Canada , 26/08/2018 . https://doi.org/10.1007/978-3-319-95022-8_90