摘要
为了综合回收选矿尾矿中的铅资源,以我国西南某稀土尾矿为研究对象,进行了工艺矿物学、浮选法和化学浸出试验研究。结果表明,铅主要以铅硬锰矿形式存在,具有嵌布粒度微细且分布均匀的特点,属浮选法难以回收铅矿物;在硝酸浓度150g/L、浸出时间2h、浸出温度60℃、浸出液固比3:1条件下的化学浸出试验,可获得铅浸出率为89.42%的技术指标。
In order to recycle lead from beneficiation tailings, a certain rare earth tailings served as the studyobject to carry out process mineralogy, flotation and leaching experiment. The results showed that the lead was mainly distributed in coronadite with fine uniformly disseminated grain, the lead mineral was hard to recover by flotation method; the lead leaching efficiency reached to 89.42% in the condition of nitric acid concentration being 150 g/L, leaching duration being two hours, leaching temperature being 60 ℃ and the leachinz ratio of liauid to solid being 3 ： 1.
出处
《矿山机械》
北大核心
2013年第8期91-94,共4页
Mining & Processing Equipment
基金
国家自然科学基金优先资助领域重点项目(U0937602)
国家高技术研究发展计划(863)(2012AA061903)
关键词
尾矿
细泥
铅硬锰矿
浸出
tailings
slime
coronadite
leaching
