2019-Sustainable Industrial Processing Summit
SIPS2019 Volume 4: Kozlov Intl. Symp. / Sustainable Materials Recycling Processes and Products
| Editors: | F. Kongoli, S.V. Alexandrovich, D.V. Grigorievich, L.L. Igoryevich, I. Startsev, T.A. Vladimirovich |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2019 |
| Pages: | 193 pages |
| ISBN: | 978-1-989820-03-2 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Research and Development of Hydrometallurgical Processing Stage in Copper Industry Wastes'Recycling Technology with Tin Recovery into Tin Concentrate
Viktor Shumskiy1; Pavel Kozlov2; A. Panshin3; Dmitriy Ivakin4;1VNIITSVETMET, Ust-Kamenogorsk, Kazakhstan; 2UMMC-HOLDING, Moscow, Russian Federation; 3LLC "UMMC-HOLDING", Verkhnyaya Pyshma, Russian Federation; 4CHELYABINSK ZINC PLANT, Chelyabinsk, Russian Federation;
Type of Paper: Regular
Id Paper: 141
Topic: 7
Abstract:
The Chelyabinsk Zinc Plant developed the technology of processing of zinc-, lead- and tin-containing copper industry dusts, including the following stages:
-Pyrometallurgical stage: calcinations with addition of sulphidizer, flux and reducing agent to the product, where lead is removed from the product with transfer in processed sublimates, while zinc and tin stay in cinders;
- Hydrometallurgical stage: high-temperature leaching of cinder, where zinc, iron, copper, etc. are extracted in solution during the obtainment of tin-concentrating solid residue.
Here we consider the hydrometallurgical stage of obtaining of tin-containing concentrate from cinder with low content of lead (less than 1%).
Here is shown the low extraction of zinc in solution and absence of selective separation of tin and lead with acid sulfuric-acid dust leaching without application of the pyrometallurgical stage.
There-stage leaching (similar to the technology of hydrometallurgical processing of Waelz-oxides, existing in Chelyabinsk Zinc Plant) and one-stage high-temperature leaching were researched for obtaining cinder. Three-stage product leaching is low-efficient, because it requires a lot of equipment and does not provide the required concentration of tin in solid residue.
About 98% of zinc contained in cinder, and more than 95% or copper and iron is transferred in solution during the high-temperature product leaching by waste zinc electrolytes with addition of sulfuric acid (t= 80-90°C, concentration of H2/SO4 is 160-170g/dm3). The obtained solution is required for application in the technological cycle of the zinc plant. Solid residue contains 14-21% of tin, which allows its use at tin enterprises.
Keywords:
Concentrating; Hydrometallurgical; Recycling; Technology; Wastes; Zinc;References:
[1] Kozlov P.A., Mastering of processes of recycling of anthropogenic wastes of non-ferrous metallurgy. Izvestiya vuzov. Russian Journal of Non-Ferrous Metals. 2014. No. 2. pp. 45-52.[2] Panshin A.M., Shakirzyanov R.M., Zatonskiy A.V., Kozlov P.A., Ivakin D.A., Processing of dusts of bag collectors formed during production of secondary copper, containing zinc, lead and tin. Proceedings of congress with international participation and elements of young scientists'school "Fundamental researches and applied developments of processes of utilization and processing anthropogenic formations". Yekaterinburg: Ural Department of Russian Academy of Science, 2014. 522 p.
[3] Syroeshkin M.E., Yumakaev Sh.I. Processing of Waelz-oxides, slag sublimates and lead dusts on lead-zinc plants. Moscow: Metallurgy, 1971. 88 p.