2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 10: Battery, Recycling, Environmental, Mining
| Editors: | Kongoli F, Kumar V, Aifantis K, Pagnanelli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 220 pages |
| ISBN: | 978-1-987820-54-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Review of Hydrothermal Sulfidation in the Treatment of Nonferrous Smelting Residue for Metal Recovery
Yong Ke1; Li-yuan Chai1; Xiao-bo Min1; Hui Liu1;1SCHOOL OF METALLURGY AND ENVIRONMENT, CENTRAL SOUTH UNIVERSITY, Changsha, China;
Type of Paper: Regular
Id Paper: 254
Topic: 7
Abstract:
Inspired by the formation of sulfide ores under geothermal conditions, hydrothermal sulfidation (HS) using elemental sulfur as the sulfidizing agent is proposed as a potential candidate for metal recovery from nonferrous smelting residue. In this process, heavy metals contained in waste were initially converted into metal sulfides. Subsequently, the as-generated sulfides could be separated and further enriched by a flotation process. Finally, the reclaimed sulfides are sent back to smelters for metal smelting. As the recovery and stabilization of heavy metals can be realized in this process, HS has garnered much attention. In the present paper, an overall review of HS in the treatment of nonferrous smelting residue is given, including (1) the feasibility and fundamental of HS; (2) the process feature and dynamic mechanics of HS; (3) the experimental studies and results of HS in the treatment of typical nonferrous smelting residue; (4) specific influencing mechanism of calcium substance and (5) new development in hydrothermal sulfidation.