A New Pyrometallurgical Recycling Technique for Lead Battery Paste without SO2 Generation: A Thermodynamic and Experimental Investigation

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

Tutkijat

Organisaatiot

  • Central South University

Kuvaus

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.

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoExtraction 2018
AlaotsikkoProceedings of the First Global Conference on Extractive Metallurgy
TilaJulkaistu - 2018
OKM-julkaisutyyppiA3 Kirjan osa tai toinen tutkimuskirja
TapahtumaGlobal Conference on Extractive Metallurgy - Ottawa, Kanada
Kesto: 26 elokuuta 201829 elokuuta 2018
Konferenssinumero: 1
http://www.extractionmeeting.org/Extraction/Home/Extraction/Default.aspx?hkey=7b5c7a17-4f49-4312-a245-8178042aab43

Julkaisusarja

NimiThe Minerals, Metals & Materials Series

Conference

ConferenceGlobal Conference on Extractive Metallurgy
MaaKanada
KaupunkiOttawa
Ajanjakso26/08/201829/08/2018
www-osoite

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