Hydrometallurgical criteria for TiO2 leaching from Rosetta ilmenite by hydrochloric acid

被引:84
作者
El-Hazek, N.
Lasheen, T. A.
El-Sheikh, R.
Zaki, Salah A.
机构
[1] Nucl Mat Author, Cairo, Egypt
[2] Zagazig Univ, Fac Sci, Zagazig, Egypt
关键词
ilmenite; TiO2; leaching; hydrochloric acid;
D O I
10.1016/j.hydromet.2007.01.003
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
This work is concerned with the determination of the leaching characteristics of TiO2 from ilmenite by hydrochloric acid. This can be considered as an alternative to selective iron dissolution and insolubilization of TiO2 in the form of synthetic rutile. The relevant criteria for TiO2 leaching in hydrochloric acid are studied, including the acid concentration and solid/liquid ratio - which control the acid/ilmenite molar ratio - as well as the effect of reduction. The data reveals that the optimum conditions involve working with 12 M acid with a solid/liquid ratio of 1/20 at 80 degrees C for 2.5 h, using ore ground to -200 mesh size. Under similar reducing conditions using 0.1 kg metallic iron powder/kg ilmenite, there is a marked decrease in the optimum solid/liquid ratio to 1/8 and in the leaching time to 1.5 h. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:45 / 50
页数:6
相关论文
共 16 条
[1]  
Abdel-Aal EA, 2000, SECOND INTERNATIONAL CONFERENCE ON PROCESSING MATERIALS FOR PROPERTIES, P955
[2]  
AFIFI AAI, 1994, THESIS AIN SHAMS U C
[3]  
Becher R., 1965, Proc. Aust. Inst. Mining Metal, V21, P1261
[4]  
Benelite Corp. of America, 1974, U.S. Patent, Patent No. [3,825,419, 3825419]
[5]  
BERKOVICH SA, 2005, Patent No. 3903239
[6]  
JACKSON JS, 1976, LIGHT MET, V1, P481
[7]   Chemical benefication of Rosetta ilmenite by direct reduction leaching [J].
Lasheen, TAI .
HYDROMETALLURGY, 2005, 76 (1-2) :123-129
[8]   DISSOLUTION OF METAL FERRITES AND IRON-OXIDES BY HCL UNDER OXIDIZING AND REDUCING CONDITIONS [J].
LU, ZY ;
MUIR, DM .
HYDROMETALLURGY, 1988, 21 (01) :9-21
[9]   Reductive leaching of ilmenite ore in hydrochloric acid for preparation of synthetic rutile [J].
Mahmoud, MHH ;
Afifi, AAI ;
Ibrahim, IA .
HYDROMETALLURGY, 2004, 73 (1-2) :99-109
[10]  
Nabivanets B., 1967, RUSS J INORG CHEM, V12, P616