Acid leaching of ilmenite decomposed by KOH

被引：39

作者：

Nayl, A. A. ^{[1
]}

Aly, H. F. ^{[1
]}

机构：

[1] Atom Energy Author, Hot Lab Ctr, Cairo, Egypt

来源：

HYDROMETALLURGY | 2009年 / 97卷 / 1-2期

关键词：

Ilmenite; KOH decomposition; Oxalic acid; Hydrochloric acid; Sulfuric acid; HYDROCHLORIC-ACID; SULFURIC-ACID; ROSETTA ILMENITE; TITANIUM; DISSOLUTION; KINETICS;

D O I：

10.1016/j.hydromet.2009.01.011

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effects of reaction time, KOH concentration, alkali-to-ilmenite mass ratios and reaction temperature on titanium decomposition were investigated. Minor amounts of titanium and iron were leached (less than 2%) from the decomposed ilmenite ore in the alkaline KOH solution. After alkaline treatment, the ilmenite paste was leached to extract iron, titanium, chromium and vanadium by adding sulfuric acid, hydrochloric acid or oxalic acid. The significant effects of reaction time, acid concentration, acid-to-ilmenite mass ratios and reaction temperature on the leaching were studied for each acid. About 93%, 92% and 89% of titanium could be leached from the alkaline treated ilmenite paste, under the optimal conditions by oxalic acid, hydrochloric acid and sulfuric acid, respectively. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：86 / 93

页数：8

共 31 条

[1] Solvent extraction of titanium by tributylphosphate, trioctylphosphine oxide and decanol from chloride media [J].