Extraction of non-ferrous metals and arsenic from fine dusts of copper smelter production by combined technology
https://doi.org/10.17073/0021-3438-2021-5-25-37
Abstract
Fine dusts of copper smelting production are a valuable raw material for the extraction of heavy non-ferrous, noble and rare metals. A feature of dusts is the high content of arsenic in them, which must be removed from the production cycle in the form of a product suitable for safe storage. The most rational way is the combined technology for processing copper smelting production dusts including low-temperature dust roasting (calcination) in order to distill arsenic into a separate product and to break up poorly soluble sulfide and ferrite zinc and copper compounds. The chemical and phase composition of Ausmelt technology dusts is presented. Thermodynamic calculations of reactions occurring during the dust roasting were carried out in order to study the behavior of copper, zinc, arsenic and iron compounds when roasted in the temperature range of 20–1000 °C, features of solid phase formation and composition, optimization of arsenic roasting and distillation conditions. It was established that dust calcination allows the conversion of poorly soluble sulfides and ferrites of zinc and copper into acidsoluble oxides and sulfates. Thermodynamic parameters were determined for the sulfuric acid leaching of individual cinder compounds. The results of laboratory studies showed that the calcination temperature of 550 °C provides the most satisfactory results of arsenic conversion to sublimates (more than 95 %) as well as copper and zinc recovery into the solution during sulfuric acid leaching (more than 90 %). The initial acidity of solutions of 50 g/dm3 and solution temperature of 60°C are sufficient to achieve high values of copper and zinc recovery into the solution.
Keywords
copper smelting,
fine dusts,
low-temperature roasting,
sulfuric acid leaching,
thermodynamics,
laboratory studies,
optimization
Supporting agencies: This research was funded by the Russian Science Foundation (Project № 20-79-00321).
About the Authors
S. V. Mamyachenkov
Ural Federal University
Russian Federation
Russian Federation
Dr. Sci. (Eng.), prof., head of the Department of non-ferrous metals metallurgy
620002, Russia, Ekaterinburg, Mira str., 19
N. A. Khanzhin
Karabashmed JSC
Russian Federation
Russian Federation
Head of the Technical Department
456143, Russia, Chelyabinsk region, Karabash, Osvobozhdeniya Urala str., 27
O. S. Anisimova
Ural Federal University
Russian Federation
Russian Federation
Cand. Sci. (Eng.), associate prof. of the Department of non-ferrous metals metallurgy
620002, Russia, Ekaterinburg, Mira str., 19
K. A. Karimov
Ural Federal University
Russian Federation
Russian Federation
Cand. Sci. (Eng.), head of the edicational laboratory of the Department of non-ferrous metals metallurgy
620002, Russia, Ekaterinburg, Mira str., 19
References
1. Morales A., Cruells M. , Roca A., Bergo R. Treatment of copper flash smelter flue dusts for copper and zinc extraction and arsenic stabilization. Hydrometallurgy. 2010. Vol. 105. P. 148—154.
2. Okanigbe Do, Popoola Api, Adeleke A.A. Characterisation of copper smelter dust for copper recovery. Procedia Manufact. 2017. Vol. 7. P. 121—126.
3. Mamyachenkov S.V., Sergeev V.A., Sergeeva Yu.F. Modern methods of processing dust from smelters. Butlerovskie soobshcheniya. 2012. Vol. 30. No. 5. P. 1—19 (In Russ.).
4. Tarasov A.V., Besser A.D., Maltsev V.I. Metallurgical processing of secondary zinc raw materials. Moscow: Gintsvetmet, 2004 (In Russ.).
5. Montenegro V., Sano H., Fujisawa T. Recirculation of high arsenic content copper smelting dust to smelting and converting processes. Miner. Eng. 2013. Vol. 49. P. 184—189.
6. Chen W., Sheng Q.-H., Wang D.-J., Zhang Z.-H., Chen G.-M. Study on the new process for treating copper converter dusts. Nonferr. Min. Metall. 2003. Vol. 3. P. 45—47.
7. Skopov G.V., Belyaev V.V., Matveev A.V. Decommissioning and separate processing of dust from electrostatic precipitators of Vanyukov smelting of JSC «Sredneural’sky Copper Smelter». Tsvetnye metally. 2013. No. 8. P. 55—59 (In Russ.).
8. Ya Chen, Ting Liao, Gaibian Li, Baizhen Chen, Xichang Shi. Recovery of bismuth and arsenic from copper smelter flue dusts after copper and zinc extraction. Miner. Eng. 2012. Vol. 39. P. 23—28.
9. Rozlovskii A.A., Bogdanov V.A. Processing of arsenic intermediates of non-ferrous metallurgy enterprises. Tsvetnye metally. 2003. No. 2. P. 30—32 (In Russ.).
10. Hou X.-G., Zhang Y., Zhang X. Leaching of copper and zinc from copperconverter dust with sulfuric acid. Hydrometallurgy of China. 2011. Vol. 30. P. 57—59.
11. Ivanov B.Ya., Yaroslavtsev A.S., Vanyushkina G.N. Hydrometallurgical processing of thin converter dust of copper smelting production. Tsvetnye metally. 1982. No. 4. P. 16—21 (In Russ.).
12. Bakhtiari F., Atashi H., Zivdar M., Seyed Bagheri S.A. Continuous copper recovery from a smelter’s dust in stirred tank reactors. Int. J. Miner. Process. 2008. Vol. 86. P. 50—57.
13. Mahdi Mohagheghi, Masoud Askari. Copper recovery from reverberatory furnace flue dust. Int. J. Miner. Process. 2016. Vol. 157. P. 205—209.
14. Vitkova M., Ettler V., Hyks J., Astrup T., Kribek B. Leaching of metals from copper smelter flue dust (Mufulira, Zambian Copperbelt). Appl. Geochem. 2011. Vol. 26. P. 263—266.
15. Xu Zhi-feng, Li Qiang, Nie Hua-ping. Pressure leaching technique of smelter dust with high-copper and higharsenic. Trans. Nonferr. Met. Soc. China. 2010. Vol. 20. P. 176—181.
16. Xue-yi Guo, Yu Yi, Jing Shi, Qing-hua Tian. Leaching behavior of metals from high-arsenic dust by NaOH—Na2S alkaline leaching. Trans. Nonferr. Met. Soc. China. 2016. Vol. 26. P. 575—580.
17. Yong Kea, Chen Shen, Xiao-Bo Min, Mei-Qing Shi, Li-Yuan Chai. Separation of Cu and As in Cu—As-containing filter cakes by Cu2+-assisted acid leaching. Hydrometallurgy. 2017. Vol. 172. P. 45—50.
18. Sergeeva Yu.F., Mamyachenkov S.V., Sergeev V.A., Karelov S.V., Gallyamova N.R. Hydrometallurgical technology for processing fine dust from smelting production using a complexing reagent. Tsvetnye metally. 2013. No. 8. P. 79—83 (In Russ.).
19. Mamyachenkov S.V., Karelov S.V., Naboychenko S.S., Yakornov S.A., Usov S.P. Complex processing of zinc and lead-containing dust from non-ferrous metallurgy enterprises. Moscow: TsNIITsvetmet, 1996 (In Russ.).
20. Guo-min Jiang, Bing Peng, Yan-jie Liang, Li-yuan Chai, Qing-wei Wang, Qing-zhu Li, Ming Hu. Recovery of valuable metals from zinc leaching residue by sulfate roasting and water leaching. Trans. Nonferr. Met. Soc. China. 2017. Vol. 27. P. 1180—1187.
Review
For citations:
Mamyachenkov S.V., Khanzhin N.A., Anisimova O.S., Karimov K.A. Extraction of non-ferrous metals and arsenic from fine dusts of copper smelter production by combined technology. Izvestiya. Non-Ferrous Metallurgy. 2021;27(5):25-37. (In Russ.) https://doi.org/10.17073/0021-3438-2021-5-25-37
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