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Author:

Zhang, Qinghua (Zhang, Qinghua.) | Xi, Xiaoli (Xi, Xiaoli.) (Scholars:席晓丽) | Zhang, Liwen (Zhang, Liwen.) | Feng, Ming (Feng, Ming.) | Nie, Zuoren (Nie, Zuoren.) (Scholars:聂祚仁) | Ma, Liwen (Ma, Liwen.)

Indexed by:

EI Scopus SCIE

Abstract:

The use and scrap of cemented carbide, especially WC-Co series cemented carbide, are increasing every year. Recycle of cemented carbide scrap is paid attention to more and more by researchers. In this paper, the molten salt electrolysis method was employed to extract tungsten and cobalt. The focal points of this study were the electrochemical dissolution mechanism of WC-Co two-phase scraps and the treatment process of multiple pieces of WC-Co scrap. Electrochemical impedance spectroscopy indicated that the dissolution mechanism of WC-Co composite had the anodic potential dependence. The equivalent circuit model of WC-Co two-phase composite can adopt the "R-ct parallel model" of cobalt and tungsten carbide. M the case of surface area evolution or multiple anodes electrolysis, the equivalent circuit model can also adopt the "R-ct parallel model", which built a bridge between single WC-Co anode and multiple WC-Co anodes. Consequently, we designed and achieved the recovery process of multiple WC-Co anodes. The XRD analysis and elemental analysis showed that the products were pure cobalt and pure tungsten, respectively.

Keyword:

Cemented carbide scraps Multiple anodes Molten-salt electrolytic recovery Electrochemical dissolution mechanism

Author Community:

  • [ 1 ] [Zhang, Qinghua]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 2 ] [Xi, Xiaoli]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Liwen]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 4 ] [Feng, Ming]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 5 ] [Nie, Zuoren]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 6 ] [Zhang, Qinghua]Beijing Univ Technol, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 7 ] [Xi, Xiaoli]Beijing Univ Technol, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 8 ] [Nie, Zuoren]Beijing Univ Technol, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 9 ] [Ma, Liwen]Beijing Univ Technol, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 10 ] [Zhang, Liwen]Beijing Univ Technol, Fac Environm & Life, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 席晓丽

    [Xi, Xiaoli]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Fac Mat & Mfg, Beijing 100124, Peoples R China;;[Zhang, Liwen]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Fac Mat & Mfg, Beijing 100124, Peoples R China

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Source :

JOURNAL OF ELECTROANALYTICAL CHEMISTRY

ISSN: 1572-6657

Year: 2021

Volume: 896

4 . 5 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:96

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 6

SCOPUS Cited Count: 6

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 8

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