Chloride leaching of lanthanum and cerium from Indian red mud and metal separation studies

被引：6

作者：

Abhilash ^{[1
]}

Meshram, Pratima ^{[1
]}

Sinha, Shivendra ^{[1
]}

Pandey, Banshi Dhar ^{[1
]}

Kumari, Vasudevan Krishna ^{[2
]}

Kar, Subrat ^{[2
]}

机构：

[1] Natl Met Lab, CSIR, Jamshedpur, Bihar, India

[2] Natl Aluminium Co Ltd, Bhubaneswar, India

来源：

METALLURGICAL RESEARCH & TECHNOLOGY | 2019年 / 116卷 / 02期

关键词：

red mud; leaching; lanthanum; cerium; hydrochloric acid; RARE-EARTH; SCANDIUM; ALUMINA; URANIUM;

D O I：

10.1051/metal/2018090

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Bench-scale experiments were conducted to recover lanthanum and cerium from Indian red mud in a hydrochloric acid medium. The method includes acid leaching of red mud pulp and subsequent liquid-liquid extraction of the leached metals with different organic extract ants, in order to establish the technical feasibility of extraction and separation simultaneously. The maximum extraction of 88.5% La was achieved at 95 degrees C, using 1 M HCl, S/L ratio - 1/100 in 1 h with 200 rpm agitation rate. At this temperature, cerium recovery (99.9%) was found to be maximum. The maximum recovery of cerium (99.9%) can be achieved even at 55 degrees C, while the recovery of lanthanum lowered to 78.5% under same conditions. Liquid-liquid extraction of leached metals was tested to be complete and selective using Cyanex 923, as against Cyanex 301 and Cyanex 272.

引用

页数：6

共 24 条

[1] Extraction of lanthanum and cerium from Indian red mud [J].