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作者:

Zhang, A. Liwen (Zhang, A. Liwen.) | Nie, B. Zuoren (Nie, B. Zuoren.) | Xi, C. Xiaoli (Xi, C. Xiaoli.) | Ma, D. Liwen (Ma, D. Liwen.)

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摘要:

Molten salt electrolysis was utilized for the separation of cobalt and tungsten from cemented carbide scrap in the NaCl-KCl melt at 1023 K (750 degrees C). The WC -15 Co sacrificial anode was dissolved to cobalt and tungsten ions and consequently discharged on the cathode to deposit cobalt and tungsten during electrolysis. The carbon remained at the anode with a porous structure. The oxidation potential of the cobalt and the tungsten carbide in the cemented carbide were analyzed through the electrochemical method. The effects of anode potential, current and duration on the dissolution were investigated. The anodic dissolution processes under different conditions were characterized through SEM and EDX. Subsequently to the two-step electrolysis, the cobalt powders of 100 nm in diameter, the tungsten powders of below 200 nm in diameter and a porous structure of carbon were obtained.

关键词:

Cemented scrap Cobalt Tungsten Separation

作者机构:

  • [ 1 ] [Zhang, A. Liwen]Beijing Univ Technol, Coll Mat Sci & Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Nie, B. Zuoren]Beijing Univ Technol, Coll Mat Sci & Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Xi, C. Xiaoli]Beijing Univ Technol, Coll Mat Sci & Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 4 ] [Ma, D. Liwen]Beijing Univ Technol, Coll Mat Sci & Engn, 100 Pingleyuan, Beijing 100124, Peoples R China

通讯作者信息:

  • [Nie, B. Zuoren]Beijing Univ Technol, Coll Mat Sci & Engn, 100 Pingleyuan, Beijing 100124, Peoples R China

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来源 :

SEPARATION AND PURIFICATION TECHNOLOGY

ISSN: 1383-5866

年份: 2018

卷: 195

页码: 244-252

8 . 6 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:192

JCR分区:1

被引次数:

WoS核心集被引频次: 19

SCOPUS被引频次: 19

ESI高被引论文在榜: 0 展开所有

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