Synthesis of scheelite from sodium tungstate solution by calcium hydroxide addition
作者: Linsheng WanXiaojing HuangDengfei DengHongchao LiYongming Chen
作者单位: 1School of Metallurgical and Chemical Engineering, Jiangxi University of Science & Technology, Ganzhou, 341000 Jiangxi, China
2Zhangyuan Tungsten Industry Co., Ltd. Chongyi, Ganzhou, 341300 Jiangxi, China
刊名: Hydrometallurgy, 2015, Vol.154 , pp.17-19
来源数据库: Elsevier Journal
DOI: 10.1016/j.hydromet.2015.03.010
关键词: Sodium tungstateScheeliteCalcium hydroxideConversionWolframite
原始语种摘要: Abstract(#br)Sodium tungstate solution can be prepared by decomposing wolframite with sodium hydroxide. A new technique is developed for precipitating scheelite from the sodium tungstate solution by the addition of calcium hydroxide. In this study, the effects of several variables on the conversion of sodium tungstate are investigated. Results show that the effects of temperature and sodium tungstate concentration are significant. Specifically, 96.4% WO 4 2− was converted to scheelite in 2h at 100°C with a calcium hydroxide stoichiometric ratio of 1.4 and a stirring speed of 350rpm. The parent solution containing sodium hydroxide can be recycled as a leaching agent return to the wolframite decomposition process.
全文获取路径: Elsevier  (合作)
影响因子:2.169 (2012)

  • hydroxide 氢氧化物
  • solution 溶液
  • calcium 
  • sodium 
  • tungstate 钨酸盐
  • scheelite 白钨矿
  • effects 海员自身物品
  • wolframite 黑钨矿
  • ratio 
  • leaching 淋滤