|
| Technical Research on Chlorine Reduction in Promethium-Neodymium Oxide |
| Received:February 16, 2017 Revised:February 20, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2017.06.013 |
| KeyWord:low chlorine; promethium-neodymium carbonate; promethium-neodymium oxide |
| Author | Institution |
| ZHANG Yong-hua |
内蒙古科技大学 材料与冶金学院 |
| WU Jin-xiu |
内蒙古科技大学 材料与冶金学院 |
| GUO Xiao-hui |
内蒙古科技大学 材料与冶金学院 |
|
| Hits: 1845 |
| Download times: 2099 |
| Abstract: |
| Chloride in promethium-neodymium oxide after precipitation and burning of promethium-neodymium chloride was high. Effects of settling time and concentration of feed liquid of two precipitation processes, temperature, loading mode, and ventilation rate in calcination process on content of chlorine root were investigated. The results show that with cocurrent flow process, content of chlorine root in promethium-neodymium carbonate and promethium-neodymium oxide is 0.035% below and 0.010% below respectively under the conditions including feed liquid concentration of 180 g/L, precipitation time of >6 h, calcination temperature of 1 050 ℃, charging loose, and ventilation rate of per ton REO of 150 m3/min. Crystal morphology of carbonate and oxide exerts some effect on content of chlorine root based on SEM analysis. |
| Close |