دورية أكاديمية
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Synergistic utilization of industrial solid wastes: Extraction of valuable metals from tungsten leaching residue by photovoltaic sawing waste.

التفاصيل البيبلوغرافية
العنوان: Synergistic utilization of industrial solid wastes: Extraction of valuable metals from tungsten leaching residue by photovoltaic sawing waste.
المؤلفون: Li M; College of Materials and Shenzhen Research Institute, Xiamen University, PR China., Huang L; College of Materials and Shenzhen Research Institute, Xiamen University, PR China. Electronic address: liuqing.huang@xmu.edu.cn., Chen W; College of Materials and Shenzhen Research Institute, Xiamen University, PR China., Huang Z; Xiamen Tungsten Co., Ltd, Xiamen 361009, PR China., Wang H; Xiamen Tungsten Co., Ltd, Xiamen 361009, PR China., Liu C; Xiamen Tungsten Co., Ltd, Xiamen 361009, PR China., Luo X; College of Materials and Shenzhen Research Institute, Xiamen University, PR China., Barati M; Department of Materials Science and Engineering, University of Toronto, Toronto, M5S3E4, Canada.
المصدر: Waste management (New York, N.Y.) [Waste Manag] 2024 Jul 15; Vol. 184, pp. 10-19. Date of Electronic Publication: 2024 May 24.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Pergamon Press Country of Publication: United States NLM ID: 9884362 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-2456 (Electronic) Linking ISSN: 0956053X NLM ISO Abbreviation: Waste Manag Subsets: MEDLINE
أسماء مطبوعة: Original Publication: New York : Pergamon Press, c1989-
مواضيع طبية MeSH: Tungsten*/chemistry , Industrial Waste*/analysis , Recycling*/methods, Oxides/chemistry ; Solid Waste/analysis ; Waste Management/methods ; Metals/chemistry ; Carbonates/chemistry
مستخلص: Solid waste challenges in both the tungsten and photovoltaic industries present significant barriers to achieving carbon neutrality. This study introduces an innovative strategy for the efficient extraction of valuable metals from hazardous tungsten leaching residue (W-residue) by leveraging photovoltaic silicon kerf waste (SKW) as a silicothermic reducing agent. W-residue contains 26.2% valuable metal oxides (WO 3 , CoO, Nb 2 O 5 , and Ta 2 O 5 ) and other refractory oxides (SiO 2 , TiO 2 , etc.), while micron-sized SKW contains 91.9% Si with a surface oxide layer. The impact of SKW addition on the silicothermic reduction process for valuable metal oxides in W-residue was investigated. Incorporating SKW and Na 2 CO 3 flux enables valuable metal oxides from W-residue to be effectively reduced and enriched as a valuable alloy phase, with unreduced refractory oxides forming a harmless slag phase during the Na 2 O-SiO 2 -TiO 2 slag refining process. This process achieved an overall recovery yield of valuable metals of 91.7%, with individual recovery yields of W, Co, and Nb exceeding 90% with the addition of 8 wt.% SKW. This innovative approach not only achieves high-value recovery from W-residue and utilization of SKW but also minimizes environmental impact through an efficient and eco-friendly recycling pathway. The strategy contributes significantly to the establishment of a resource-efficient circular economy, wherein the recovered high-value alloy phase return to the tungsten supply chain, and the harmless slag phase become raw materials for microcrystalline glass production.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
فهرسة مساهمة: Keywords: Photovoltaic sawing waste; Recycling; Silicothermic reduction; Tungsten leaching residue; Valuable metals
المشرفين على المادة: V9306CXO6G (Tungsten)
0 (Industrial Waste)
0 (Oxides)
0 (Solid Waste)
0 (Metals)
45P3261C7T (sodium carbonate)
0 (Carbonates)
تواريخ الأحداث: Date Created: 20240524 Date Completed: 20240606 Latest Revision: 20240606
رمز التحديث: 20240607
DOI: 10.1016/j.wasman.2024.05.025
PMID: 38788498
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-2456
DOI:10.1016/j.wasman.2024.05.025