Leaching of rare earths from fine-grained zirconosilicate ore

Leaching of rare earths Y, La and Ce by sulphuric acid from fine-grained zirconosilicate ore was investigated using Ta-guchi method of experimental design. An orthogonal array of L8, 27 which denotes 7 factors at 2 levels was chosen to consider the various factors relevant to the leaching process： b...

Full description

Saved in:
Bibliographic Details
Published inJournal of rare earths Vol. 34; no. 9; pp. 908 - 916
Main Authors Lim, H., Ibana, D., Eksteen, J.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2016
Subjects
cerium
lanthanum
rare earths
Taguchi
yttrium
zirconosilicate leaching
实验设计
浸出过程
硫酸化焙烧
磨矿粒度
稀土元素
稀土硅
细粒度
锆矿
zirconosilicate leaching
Taguchi
yttrium
lanthanum
cerium
rare earths
Online AccessGet full text

Cover

More Information
Summary:Leaching of rare earths Y, La and Ce by sulphuric acid from fine-grained zirconosilicate ore was investigated using Ta-guchi method of experimental design. An orthogonal array of L8, 27 which denotes 7 factors at 2 levels was chosen to consider the various factors relevant to the leaching process： baking time, baking temperature, acid dosage, leaching time, leaching temperature, grind size and dilution. Statistical analysis showed that sulphation baking was a significant step for the leaching of rare earths from the whole-of-ore and optimized leaching of rare earths involved the following condition： baking for 3 h at 320 ℃ at 3.2 g acid/g ore acid dosage followed by water leaching at 20 ℃ for 1 h and dilution of 20 mL water/g ore using 300 um grind size. The effect of each leaching factor was also discussed.
Bibliography:Leaching of rare earths Y, La and Ce by sulphuric acid from fine-grained zirconosilicate ore was investigated using Ta-guchi method of experimental design. An orthogonal array of L8, 27 which denotes 7 factors at 2 levels was chosen to consider the various factors relevant to the leaching process： baking time, baking temperature, acid dosage, leaching time, leaching temperature, grind size and dilution. Statistical analysis showed that sulphation baking was a significant step for the leaching of rare earths from the whole-of-ore and optimized leaching of rare earths involved the following condition： baking for 3 h at 320 ℃ at 3.2 g acid/g ore acid dosage followed by water leaching at 20 ℃ for 1 h and dilution of 20 mL water/g ore using 300 um grind size. The effect of each leaching factor was also discussed.
11-2788/TF
rare earths; yttrium; lanthanum; cerium; zirconosilicate leaching; Taguchi
H. Lim D. lbana, J. Eksteen（1. Western Australia School of Mines, Curtin University, 7 Conlon Street, Waterford, 6152, Australia; 2. Mining and Metallurgy, Western Australia School of Mines, Locked Bag 17, Kalgoorlie, 6433, Australia）
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(16)60114-X