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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 828 pages |
| ISBN: | 978-0-9879917-0-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
Production Of Elemental Sulfur: A Promising Alternative For SO2 Abatement From Smelter Gases
Rafael Padilla1; Fernando Parada1; Arcadio Ulloa1; Juan Carlos Carrasco1; Maria Cristina Ruiz1; Mario Sanchez1;1UNIVERSIDAD DE CONCEPCION, Concepcion, Chile;
Type of Paper: Regular
Id Paper: 387
Topic: 4
Abstract:
Most of the SO2 produced in the pyrometallurgical processing of non-ferrous metals is currently used to make sulfuric acid. This process, initially conceived as a way to mitigate atmospheric pollution with SO2, has become in some particular cases a source for additional income due to local or geographical demand of sulfuric acid mainly for the use in hydrometallurgical processing of ores. However, the convenience of sulfuric acid production from smelter gases is currently scrutinized due to the increasing instability of the local acid market and the increasing interest of developing alternative methods to treat the SO2 from the gaseous effluents in nonferrous smelting processes. In this framework, this paper presents a critical review of alternative methods to treat SO2 laden smelter gases to produced elemental sulfur in order to comply with ever stringent environmental regulations as opposed to the conventional method of producing sulfuric acid from the SO2.