川西稀土矿泥预处理除锰及回收稀土
|
摘要
四川冕宁稀土矿泥中含有３ ％ ～７ ％ Ｒ Ｅ 及２ ％ ～１０ ％ Ｍｎ 。稀土赋存于矿泥锰铁非晶质体中， 为了提出该矿泥中的稀土， 必须破坏锰铁非晶态结构。本研究是采用 Ｎａ２ Ｓ Ｏ３作还原剂， 还原浸出稀土矿泥中的锰， 然后， 回收矿泥中的稀土。稀土矿泥用 Ｎａ２ Ｓ Ｏ３ 处理后， 浸出渣经氯化焙烧， 稀土回收率达７５６ ％ ， 比矿泥直接氯化焙烧的稀土回收率提高约２０ ％ 。
Abstract: The rare earth mine mud from western sichuang contains about 3%～7% RE and 2%～10% Mn, in which RE exists in Mn Fe amorphous bodies of the mud. For recovering RE in the mud, it is necessary to destroy the Mn Fe amorphous structure. Na 2SO 3 was used as reducing leaching agent to leach Mn in the mud, the suitable conditions were determined in this work. At the conditions of Na 2SO 3/mud=2∶10, leaching time 24 h, M H 2SO 4 / M Na 2SO 3 =0.7～1.0 and S/L ratio 1∶4, the recovery of Mn can reach above 90%. The mud treated by Na 2SO 3 is further roasted by chloride. RE recovery reaches to 75.6%, which is 20% higher than with the original mud.
Abstract: The rare earth mine mud from western sichuang contains about 3%～7% RE and 2%～10% Mn, in which RE exists in Mn Fe amorphous bodies of the mud. For recovering RE in the mud, it is necessary to destroy the Mn Fe amorphous structure. Na 2SO 3 was used as reducing leaching agent to leach Mn in the mud, the suitable conditions were determined in this work. At the conditions of Na 2SO 3/mud=2∶10, leaching time 24 h, M H 2SO 4 / M Na 2SO 3 =0.7～1.0 and S/L ratio 1∶4, the recovery of Mn can reach above 90%. The mud treated by Na 2SO 3 is further roasted by chloride. RE recovery reaches to 75.6%, which is 20% higher than with the original mud.
引文
1 袁忠信, 施泽民等四川冕宁牦牛坪稀土矿床北京: 地震出版社,19953
2 杨光明, 潘北橡地质科技情报,1990 ,11(2) :14
3 张萍冕宁稀土矿床黑色风化物中稀土元素赋存状态及提取工艺研究: [ 博士论文]长沙: 中南工业大学,1997
4 池汝安, 朱国才氯化焙烧胶态相矿泥提取氧化稀土, 中国专利申请号97125900.3
2 杨光明, 潘北橡地质科技情报,1990 ,11(2) :14
3 张萍冕宁稀土矿床黑色风化物中稀土元素赋存状态及提取工艺研究: [ 博士论文]长沙: 中南工业大学,1997
4 池汝安, 朱国才氯化焙烧胶态相矿泥提取氧化稀土, 中国专利申请号97125900.3
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心