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作者:

Tang, Kuancheng (Tang, Kuancheng.) | Zhang, Liwen (Zhang, Liwen.) | Fang, Qi (Fang, Qi.) | Liu, Chunjia (Liu, Chunjia.) | Li, Rong (Li, Rong.) | Xi, Xiaoli (Xi, Xiaoli.) (学者:席晓丽) | Nie, Zuoren (Nie, Zuoren.)

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EI Scopus SCIE

摘要:

In this study, tungsten and cobalt were extracted from cemented carbide scrap by three-stage electrodeposition in Na 2 WO 4 molten salt at 900 degrees C in air atmosphere. The cemented carbide scrap was used as the consumable anode, while the cemented carbide calcined material was used as the electrolytically active substance additive. The composition of the cemented carbide calcined material was determined by thermodynamic calculations combined with XRD phase analysis. The study investigated the promoting effect of air atmosphere on anode oxidation and the effect of varying the molar ratio of tungsten to cobalt in the molten salt on product composition. Cyclic voltammetry was used to analysed the cathodic reduction behaviour of tungsten and cobalt. The nucleation mechanism of tungsten and cobalt was determined to be instantaneous by chronoamperometry. Finally, metallic tungsten and cobalt were successfully separated and extracted by three-stage constant current electrolysis.

关键词:

Molten salt electrolysis Cemented carbide Recovery Air atmosphere

作者机构:

  • [ 1 ] [Tang, Kuancheng]Beijing Univ Technol, Coll Mat Sci & Engn, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China
  • [ 2 ] [Zhang, Liwen]Beijing Univ Technol, Coll Mat Sci & Engn, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China
  • [ 3 ] [Xi, Xiaoli]Beijing Univ Technol, Coll Mat Sci & Engn, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China
  • [ 4 ] [Nie, Zuoren]Beijing Univ Technol, Coll Mat Sci & Engn, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China
  • [ 5 ] [Zhang, Liwen]Beijing Univ Technol, Natl Engn Lab Ind Bigdata Applicat Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Nie, Zuoren]Beijing Univ Technol, Natl Engn Lab Ind Bigdata Applicat Technol, Beijing 100124, Peoples R China
  • [ 7 ] [Fang, Qi]Xiamen Tungsten Co Ltd, China Natl R&D Ctr Tungsten Technol, Xiamen 361005, Peoples R China
  • [ 8 ] [Liu, Chunjia]Xiamen Tungsten Co Ltd, China Natl R&D Ctr Tungsten Technol, Xiamen 361005, Peoples R China
  • [ 9 ] [Li, Rong]Xiamen Tungsten Co Ltd, China Natl R&D Ctr Tungsten Technol, Xiamen 361005, Peoples R China
  • [ 10 ] [Xi, Xiaoli]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China
  • [ 11 ] [Nie, Zuoren]Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China

通讯作者信息:

  • [Xi, Xiaoli]Beijing Univ Technol, Coll Mat Sci & Engn, Collaborat Innovat Ctr Capital Resource Recycling, Beijing 100124, Peoples R China;;

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来源 :

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS

ISSN: 0263-4368

年份: 2024

卷: 121

3 . 6 0 0

JCR@2022

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SCOPUS被引频次: 2

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