摘要
以冕宁县稀土废弃矿渣为研究对象,经随机采样,测定其废弃矿渣中稀土的含量.在不同浓度的硫酸溶液、温度和时间浸取条件下,对稀土废弃矿渣反复浸取寻找其最大浸取量的实验研究结果表明:当T=323 K,t=60 min,硫酸溶液浓度为0.5 mol/L的浸取条件下得到的浸取液中含稀土量最大,其含量为20.21 mg/g(La:7.20 mg/g,Ce:9.10 mg/g,Pr:1.07 mg/g,Nd:2.84 mg/g).用木纤维固化单宁吸附材料对矿渣浸取液进行吸附回收量实验得到:当T=303 K,t=3 h,pH=6.0时,单宁量为0.4 g的条件下,加入乙二胺,其最大吸附率为:98.51%.研究结果表明,该方法适用于废弃矿渣中稀土的回收利用.
Taking the rare earth slag of Mianning county of Sichuan province as a sample, this paper studied its rare earth content. When the leaching liquid＇s condition is T = 323 K,t = 60 min,c（ H2SO4 ） = 0.5 mol/L, we can get the largest amount of rare earth, and its content is 20.21 rag/g（ La ：7.20 mg/g, Ce ：9.10 mg/g, Pr： 1.07 mg/g, Nd ：2.84 mg/g）. Then the wooden fiber curing tannins adsorption materials are used to adsorb the leaching slag, when the adsorption condition is T = 303 K,t = 3 h, PIt = 6.0, mT,,,,i＂ = 0.4 g, we can get the largeset amount of rare earth＇s adsorption rate of 98.51% with a close of C2H4 （NH2 ）4. The research result shows that this method is suitable for recycling rare earth in the waste slag.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第2期302-305,共4页
Journal of Sichuan Normal University（Natural Science）
基金
四川省高校先进功能材料重点实验室开放课题(KFKT2010-01)资助项目
关键词
稀土矿渣
稀土回收
稀硫酸浸取
木纤维固化单宁吸附
吸附量
rare earth waste alag
recycling rare earth
dilute sulfuric acid leaching
wooden fiber curing tannins adsorption materials
adsorption rate
