Recovery of rhenium from tungsten‑rhenium wire by alkali fusion in KOH-K 2 CO 3 binary molten salt
作者: Longgang YeZhen OuyangYongming ChenShufen Liu
作者单位: 1College of Metallurgy and Material Engineering, Hunan University of Technology, Zhuzhou 412007, China
2School of Metallurgy and Environment, Central South University, Changsha 410083, China
刊名: International Journal of Refractory Metals and Hard Materials, 2020, Vol.87
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijrmhm.2019.105148
关键词: TungstenRheniumPotassium perrhenateRecoveryAlkali fusionCrystallization
原始语种摘要: Abstract(#br)Tungsten‑rhenium wire is used in thermocouple and lamp filament manufacturing due to its good thermal sensitivity and high temperature plasticity, and many waste wires are generated in processing and after use. This work focuses on the efficient recovery of high value rhenium from tungsten‑rhenium wire waste with a mass composition represented by W95Re5. The main steps for recovery include alkali fusion, recrystallization, hydrogen reducing and washing. First, WRe wire was decomposed by KOH-K 2 CO 3 molten salt to produce potassium perrhenate, where the decomposition ratios of W and Re reached 99.36% and 99.80% using a mass ratio of salt to wire of 3:1, m (KOH) of 80% ( m representing the mass fraction of KOH in binary salt), a temperature of 800 °C and...
全文获取路径: Elsevier  (合作)

  • perrhenate 高铼酸盐
  • rhenium 
  • fusion 融解
  • tungsten 
  • molten 熔化的
  • alkali 
  • binary 二元的