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

Li, Yun; Chen, Yongming; Tang, Chaobo; Yang, Shenghai; Klemettinen, Lassi; Rämä, Minna; Wan, Xingbang; Jokilaakso, Ari

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

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Title:	A New Pyrometallurgical Recycling Technique for Lead Battery Paste without SO2 Generation
Author(s):	Li, Yun ; Chen, Yongming ; Tang, Chaobo ; Yang, Shenghai ; Klemettinen, Lassi ; Rämä, Minna ; Wan, Xingbang ; Jokilaakso, Ari
Date:	2018
Language:	en
Pages:	1109-1120
Department:	Department of Chemical and Metallurgical Engineering Central South University Metallurgy (MTG)
ISBN:	978-3-319-95021-1 978-3-319-95022-8
Series:	Extraction 2018, The Minerals, Metals & Materials Series
DOI-number:	10.1007/978-3-319-95022-8_90
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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
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
Permanent link to this item: http://urn.fi/URN:NBN:fi:aalto-201810025199 Email this Export to RefWorks QR Code Print BibTex Tweet