摘要
研究了包钢选矿厂尾矿经AlCl3或MgO脱氟后加碳氯化提取稀土的反应原理和工艺,考察了碳热氯化反应时间和脱氟剂对稀土提取率的影响。结果表明:700℃碳热氯化2h,在脱氟剂AlCl3存在下,稀土提取率可达77%;在脱氟剂MgO存在下,稀土提取率可达84%。
A carbochlorination treating technology for extracting rare -earths from concentrator＇s tailings after deflu- orination treatment by AlCl3 or MgO and its reaction principle was researched. The effects of carbochlorination reaction time and reaction temperature on the extraction yield of rare - earths were examined. The results showed that in the presence of defluorinating agent AlCl3, under the conditions of the temperature of corboehlorination reaction is 700℃ and the reaction time is 2h,the extraction yield of rare -earths can reach 77%. When the MgO is used as defluorinating agent, the extraction yield of rare- earths can reach 84%.
出处
《矿产综合利用》
CAS
2009年第4期38-41,共4页
Multipurpose Utilization of Mineral Resources
基金
国家自然科学基金资助项目(50574023)
辽宁省教育厅科学研究资助项目(20060666)
关键词
尾矿
碳热氯化
脱氟剂
稀土
Tailings
Carbochlorination
Defluorinating agent
Rare - earths
作者简介
于秀兰（1964-），女，副教授，博士，主要从事稀土冶金及稀土显色剂的合成与应用方面的研究。
