Recovery of high-purity rhenium resources from W-Mo-Re alloy scraps by two-stage low-temperature oxidation volatilization

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2025-03-26 DOI:10.1016/j.psep.2025.107056

Chenlong Wei , Huihui Qiao , Jiayu Fang , Xuexiang Wang , Jun Wen , Peng Tong

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引用次数: 0

Abstract

Rhenium in the waste of tungsten-molybdenum-rhenium alloy has high value, but there are problems such as low purity and low recovery rate in recovering rhenium from the waste of tungsten-molybdenum-rhenium alloy. To effectively solve these problems, this article uses a combination of high-temperature pyrometallurgy and secondary low-temperature oxidation volatilization to effectively extract fine-grained rhenium oxide from tungsten-molybdenum-rhenium alloy scrap. The composition and microstructure of the recovered material were analyzed by SEM, XRD, and ICP. The results showed that when the temperatures of the three-zone tube furnace were set to 800°C, 380°C, and 150°C, the content of rhenium oxide in the recovered material from the concentrated precipitate reached 97 %, the content of molybdenum oxide was about 2.3 %, and no tungsten oxide was detected. The material in the concentrated deposition area is oxidized and volatilized at a low temperature of 450°C, resulting in a high purity of 99.95 % and a recovery rate of 82.7 % for Re₂O₇. It can be seen that the high-temperature pyrometallurgical method combined with the secondary low-temperature oxidation volatilization method is simple and the recovered rhenium oxide has high purity and excellent performance.

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来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.