...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Selective recovery of Mo, Co and Al from spent Co/Mo/γ-Al_2O_3 catalyst: Effect of calcination temperature
【24h】

Selective recovery of Mo, Co and Al from spent Co/Mo/γ-Al_2O_3 catalyst: Effect of calcination temperature

机译：从废Co / Mo /γ-Al_2O_3催化剂中选择性回收Mo，Co和Al：煅烧温度的影响

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

A combination of pyro and hydrometallurgical process has been proposed to selectively recover molubdenum, cobalt and aluminium from the spent catalyst containing 12.3% Mo; 31.8% Al; 2.38% Co; 9.5% S and 2.9% C. Before a two-stage alkali-acid leaching process to selectively target Mo, Co and Al from the uncrushed sample, the spent catalyst was calcined at different temperatures. Characterization of different calcined samples was carried out by different instrumental analysis like XRD, TG/DTA, IR and SEM in order to understand the structural changes and dissolution behavior of spent catalyst. It was found that calcination at 500℃ preferred for spent catalyst roasting since the surface and pore structures obtained by roasting at this temperature facilitated dissolution of calcined spent catalyst in the leachant. Mo was selectively separated and recovered from the leach liquor by carbon adsorption method; whereas, Al and Co were separated by an organo-phosphinic-based extractant, Cyanex 272. In the whole process, 95.9% Mo, 89.6% Co and 39.8% Al was recovered from the spent catalyst. Finally, a complete process flowsheet has been presented.
机译：有人提出将热解法和湿法冶金法结合起来从含12.3％Mo的废催化剂中有选择地回收钼，钴和铝。 31.8％铝;钴2.38％; 9.5％的S和2.9％的C。在进行两步碱-酸浸提工艺以从未粉碎样品中选择性地靶向Mo，Co和Al之前，将废催化剂在不同温度下煅烧。通过不同的仪器分析，如XRD，TG / DTA，IR和SEM，对不同煅烧样品进行表征，以了解废催化剂的结构变化和溶解行为。发现在500℃下煅烧对于废催化剂的焙烧是优选的，因为在此温度下焙烧获得的表面和孔结构促进了煅烧过的催化剂在浸出剂中的溶解。通过碳吸附法从浸出液中选择性地分离回收钼。相反，Al和Co被有机膦基萃取剂Cyanex 272分离。整个过程中，从废催化剂中回收了95.9％Mo，89.6％Co和39.8％Al。最后，给出了完整的过程流程图。

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