Recovery of zinc from zinc oxide dust containing multiple metal elements by carbothermal reduction

IF 1 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Journal of Mining and Metallurgy Section B-Metallurgy Pub Date : 2021-01-01 DOI:10.2298/jmmb201102049l

F.-G. Lei, Li Minting, C. Wei, Deng Zhigan, Li Xingbin, Gang Fan

引用次数: 0

Abstract

A carbothermal reduction process simulating EAF process is used to handle the zinc oxide dust, and the zinc in the dust can be extracted and recovered efficiently. The crude zinc and lead-tin alloy were obtained finally. The effects of temperature, holding time, and reductant dosage on zincvolatilization rate were investigated, and the ?Pelletizing -Calcination-Carbothermic reduction? experiment was conducted. The resultsfound the optimal reduction condition was as follows: the temperature of 1300?C, reductant dosage of 14.04% and holding time of 120 min. After the calcination at 900?C for 120 min, the removal rates of fluorine, chlorine and sulfur in the dust were 98.18%, 96.38% and 28.58% respectively, and the volatilization rate of zinc was 99.83% in reduction process. The zinc content of the crude zinc was 68.48%.

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碳热还原法从含多种金属元素的氧化锌粉尘中回收锌

采用模拟电弧炉工艺的碳热还原法处理氧化锌粉尘，可有效地提取和回收粉尘中的锌。最后得到粗锌和铅锡合金。考察了温度、保温时间和还原剂用量对锌挥发速率的影响，并对球团-煅烧-碳热还原过程进行了研究。进行了实验。结果发现，最佳还原条件为:温度为1300℃;C，还原剂用量为14.04%，保温时间为120 min。还原过程中氟、氯和硫的去除率分别为98.18%、96.38%和28.58%，锌的挥发率为99.83%。粗锌的锌含量为68.48%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Mining and Metallurgy Section B-Metallurgy 工程技术-冶金工程

CiteScore

2.00

自引率

40.00%

发文量

审稿时长

2 months

期刊介绍： University of Belgrade, Technical Faculty in Bor, has been publishing the journal called Journal of Mining and Metallurgy since 1965 and in 1997 it was divided in two independent journals dealing with mining and metallurgy separately. Since 2009 Journal of Mining and Metallurgy, Section B: Metallurgy has been accepted in Science Citation Index Expanded. Journal of Mining and Metallurgy, Section B: Metallurgy presents an international medium for the publication of contributions on original research which reflect the new progresses in theory and practice of metallurgy. The Journal covers the latest research in all aspects of metallurgy including hydrometallurgy, pyrometallurgy, electrometallurgy, transport phenomena, process control, solidification, mechanical working, solid state reactions, materials processing, surface treatment and relationships among processing, structure, and properties of materials.