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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Study of the Capabilities of the Efficient Arsenic Removal from the Lead Dust
Igor Startsev1; Vera Reznichenko1; Viktor Shumskiy1;1VNIITSVETMET, Ust-Kamenogorsk, Kazakhstan;
Type of Paper: Regular
Id Paper: 41
Topic: 7
Abstract:
The objective of the work was to study the capabilities of the efficiency arsenic removal from the lead dusts which are either generated by the copper smelters or removed from lead operation cycles. Arsenic removal issue is the vital problem to be solved to get the dusts involved into the processing operation [1]. According to the sources, sulphatisation of the dusts with sulphuric acid at the temperature of 300-400°С is the most efficient way to get arsenic removed. In terms of arsenic removal rate and leaching agent consumption, the sulphatisation process is more efficient method in comparison with direct sulphuric leaching [1-3]. That is, it is predetermined by the fact that lead dusts contain arsenic compounds which are hardly soluble in sulfurous solutions, but get transformed and fumed into the gas phase at the increased temperatures specific to sulphatisation process [1].
Arsenic transition to gas phase using conventional dust sulphatisation process, however, requires both increased power consumption and installation of the complex systems to collect and utilize the fumes. That makes the sulphatisation process less environmentally friendly than direct sulphuric leaching. Besides, conventional sulphatisation process is less efficient in terms of lead, copper, and zinc recovery degrees.
The possibility to combine advantages of both the sulphatisation process and direct sulphuric leaching of the dusts without arsenic sublimation to gas phase was studied within the paper. It was found out that high degrees of arsenic, copper, and zinc recovery to the solutions could be achieved at a decrease of the sulphatisation process temperature to 100-150°С. This provides high quality of the lead products and prevents arsenic fuming. Further, processing of the product solutions including arsenic and valuable metals recovery to final products can be performed using commonly known methods [3-4].
Keywords:
Dust; Leaching; Lead; Recycling; Smelting;References:
[1] N.I. Kopylov, Yu.D. Kaminsky. Arsenic. Novosibirsk (2004) 367.[2] S.M. Isabayev. Hydrometallurgical processing of arsenic-bearing lead dusts generated by the copper operations, Non-Ferrous Magazine (No. 8, 2017) 33-38.
[3] Yu.F. Sergeyeva. Complex processing of fine dusts generated by the copper smelter operated by JSC "SUMZ ", Yekaterinburg (2013) 173.
[4] A.S. Sharipova. Complex processing of lead dusts generated by copper operations followed by ammonium perrhenate and non-ferrous metals compounds production, Almaty (2009) 22.