Leaching Titaniferous Magnetite Concentrate by Alkaline Aqueous Solution

被引：1

作者：

Guo, Ke ^{[1
,2
]}

Wang, Shaoyan ^{[1
]}

Song, Renfeng ^{[2
]}

Zhang, Zhiqiang ^{[1
]}

机构：

[1] Univ Sci & Technol Liaoning, Sch Chem Engn, Anshan 114051, Liaoning, Peoples R China

[2] Anshan Iron & Steel Grp Corp, Min Design & Res Inst, Anshan 114001, Liaoning, Peoples R China

来源：

MINING METALLURGY & EXPLORATION | 2021年 / 38卷 / 04期

关键词：

Titaniferous magnetite concentrate; Leaching process; Separation; SOLID-STATE REDUCTION; TITANOMAGNETITE; ILMENITE; TITANIUM; IRON; VANADIUM; KINETICS; EXTRACTION; MECHANISM;

D O I：

10.1007/s42461-021-00387-x

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Leaching titaniferous magnetite concentrate with alkali solution of high concentration under high temperature and high pressure was utilized to improve the grade of iron in iron concentrate and the grade of TiO2 in titanium tailings. The titaniferous magnetite concentrate in use contained 12.67% TiO2 and 54.01% Fe. The thermodynamics of the possible reactions and the kinetics of leaching process were analyzed. It was found that decomposing FeTiO3 with NaOH aqueous solution could be carried out spontaneously and the reaction rate was mainly controlled by internal diffusion. The effects of water usage, alkali concentration, reaction time, and temperature on the leaching procedure were inspected, and the products were characterized by X-ray diffraction, scanning electron microscope, and energy dispersive spectroscopy, respectively. After NaOH leaching and magnetic separation, the concentrate, with Fe purity of 65.98% and Fe recovery of 82.46%, and the tailings, with TiO2 purity of 32.09% and TiO2 recovery of 80.79%, were obtained, respectively.

引用

页码：1721 / 1730

页数：10

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