气候变化领域集成服务门户(CCPortal): Antimony Extraction from Sulfide Concentrates by Direct Electrolytic Desulfurization in Molten Salt

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DOI	10.1021/acssuschemeng.4c00891
	Antimony Extraction from Sulfide Concentrates by Direct Electrolytic Desulfurization in Molten Salt
	Zhu, Qiang; Yang, Jianguang; Nan, Tianxiang; Liu, Jiang; Tang, Shiyang; Zeng, Weizhi; Tang, Chaobo
发表日期	2024
ISSN	2168-0485
起始页码	12
结束页码	20
卷号	12 期号:20
英文摘要	Recognizing the imperative to address global climate change and promote sustainable development within the industry, the conventional antimony smelting process, characterized by high energy consumption and pollution, is confronted with escalating ecological and environmental pressures. This study proposes a two-stage method for the efficient and thorough extraction of antimony through direct electrolysis from sulfide concentrate in molten salt. Our focus is on assessing the technical feasibility and cost advantages of directly electrolyzing antimony concentrates for industrial applications. The study commences with an analysis of the pyrolysis and electrolytic desulfurization behaviors of each component through thermodynamic calculations. Subsequently, it investigates the effects of various factors on product quality and electrolysis stability during the first stage (constant-current high-efficiency electrolysis) and the second stage (constant-voltage deep electrolysis), respectively. The study also examines the flow of elements and the desulfurization mechanism, while evaluating the economic and environmental impacts of the process. The results demonstrate that the two-stage combined electrolysis process can meet the requirements of high efficiency and continuity of electrolysis, achieving a remarkable integrated current efficiency of 80%, electrolysis energy consumption of 2.39 kWhkg(-1), and a direct antimony yield of 97.11%. In comparison to the traditional process, this novel method of antimony extraction through molten salt electrolysis reduces energy consumption, carbon emissions, and production costs by 72.06%, 95.76%, and 48.59%, respectively. Furthermore, sulfur is obtained directly without the emission of SO2. This work not only provides theoretical guidance and technical ideas for the green electrolytic desulfurization of antimony sulfide but also extends its applicability to other sulfide concentrates such as CuFeS2, PbS, ZnS, WS2, MoS2, and Bi2S3.
英文关键词	Antimony metallurgy; Molten salt electrolysis; Low carbon extraction; SO2 emission; Industrial application evaluation
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Engineering
WOS类目	Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
WOS记录号	WOS:001224860400001
来源期刊	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302154
作者单位	Central South University; Aalto University
推荐引用方式 GB/T 7714	Zhu, Qiang,Yang, Jianguang,Nan, Tianxiang,et al. Antimony Extraction from Sulfide Concentrates by Direct Electrolytic Desulfurization in Molten Salt[J],2024,12(20).
APA	Zhu, Qiang.,Yang, Jianguang.,Nan, Tianxiang.,Liu, Jiang.,Tang, Shiyang.,...&Tang, Chaobo.(2024).Antimony Extraction from Sulfide Concentrates by Direct Electrolytic Desulfurization in Molten Salt.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,12(20).
MLA	Zhu, Qiang,et al."Antimony Extraction from Sulfide Concentrates by Direct Electrolytic Desulfurization in Molten Salt".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 12.20(2024).