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Reaction and Separation

Leaching of Fe, V and Ti from Pre-reduced Vanadium-bearing Titanomagnetite Bulk Concentrate with HCl and H2SO4

  • XIAO Wan-hai ZHAO Hong-xin SONG Ning CHEN De-sheng LIU Ya-hui WANG Li-na Li-Na QI Tao
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  • 1. Faculty of Metallergy Energy Engnerring, Kunming University Science Technology
    2. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, CAS
    3. Department of Physical Chemistry of Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology

Received date: 2016-03-02

  Revised date: 2016-04-08

  Online published: 2016-10-14

Abstract

The leaching process of Fe, V and Ti from vanadium-bearing titanomagnetite pre-reduced by HCl was investigated, concerning the effect of variation factors on the leaching rate, and the phase-analysis of the leaching residue herein. The results showed under the optimal conditions, with initial concentration of HCl of 20%(?), mass ratio of liquid to solid of 4:1, leaching temperature of 110℃ and leaching time of 4 h, the leaching rate of Fe, V and Ti were 91.8%, 95.0%, and 0.3%, respectively. In the leaching process, Ti was firstly dissolved and subsequent hydrolysis-precipitation. The HCl leaching solution can be used for recovering iron and vanadium extraction in the subsequent process. The decomposition rate of TiO2 of HCl leaching residue by H2SO4 was reached up to 98.2%, deduced the HCl leaching residue can be used as raw materials for production of titanium white by sulfuric acid process.

Cite this article

XIAO Wan-hai ZHAO Hong-xin SONG Ning CHEN De-sheng LIU Ya-hui WANG Li-na Li-Na QI Tao . Leaching of Fe, V and Ti from Pre-reduced Vanadium-bearing Titanomagnetite Bulk Concentrate with HCl and H2SO4[J]. The Chinese Journal of Process Engineering, 2016 , 16(5) : 737 -743 . DOI: 10.12034/j.issn.1009-606X.216148

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