• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Industrial Practice >IMPROVED METHOD FOR THE PURIFICATION OF TECHNICAL GRADE MOLYBDENUM TRIOXIDE
【24h】

IMPROVED METHOD FOR THE PURIFICATION OF TECHNICAL GRADE MOLYBDENUM TRIOXIDE

机译：改进的工艺级三氧化二钼精制方法

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two design-of-experiments studies were carried out to investigate the leaching of technical grade molybdenum tri-oxide (TGM) in the presence of hydrochloric acid and the mother liquor of ammonium di-molybdate crystallization used as an ammonia source. Results indicated that leaching of TGM in HCl is possible only when used at about 1N concentration. In high concentrations of HCl, technical grade M063 had very high solubility (7.5 to 40 g/L Mo). The most suitable conditions for HCl leaching of TGM were obtained at a slightly elevated temperature of 80℃. Using about 1N HCl at 80℃, potassium in the leached solids (TGM) decreased to about 110 ppm, a value typically obtained in TGM leached in HNO_3 - NH_4NO_3 media (3.5 - 4.0 moles /L HNO_3 + 0.5 - 1.0 moles/L NH_4NO_3). Mo losses under these conditions were 0.8-0.9 g/L Mo. The HCl-leach method, presented here-in, has a significant advantage in chemical cost and environmental benefits over HNO_3 - NH_4NO_3 purification method.
机译：进行了两项实验设计研究，以研究在盐酸存在下工业级三氧化钼（TGM）的浸出以及将二钼酸铵结晶的母液用作氨源的情况。结果表明，仅当以大约1N的浓度使用时，才可能在HCl中浸出TGM。在高浓度的HCl中，工业级M063具有很高的溶解度（7.5至40 g / L Mo）。在稍高的80℃温度下获得了TGM HCl浸出的最合适条件。在80℃下使用约1N HCl，浸出固体（TGM）中的钾降至约110 ppm，这是在HNO_3-NH_4NO_3介质（3.5-4.0摩尔/ L HNO_3 + 0.5-1.0摩尔/ L NH_4NO_3）中浸出的TGM中通常获得的值）。在这些条件下，Mo的损失为0.8-0.9 g / LMo。本文介绍的HCl浸提法与HNO_3-NH_4NO_3提纯法相比，在化学成本和环境效益方面具有明显优势。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号