Preparation of TiO<sub>2</sub> from Panzhihua Titanium Slag by NaOH Decomposing-HCl Leaching

Liu Songliang; Sun Lin; Wang Jinjun; Wang Zhiyu

doi:10.7513/j.issn.1004-7638.2019.03.001

Volume 40 Issue 3

Jun. 2019

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Liu Songliang, Sun Lin, Wang Jinjun, Wang Zhiyu. Preparation of TiO2 from Panzhihua Titanium Slag by NaOH Decomposing-HCl Leaching[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(3): 1-6. doi: 10.7513/j.issn.1004-7638.2019.03.001

Citation:

Liu Songliang, Sun Lin, Wang Jinjun, Wang Zhiyu. Preparation of TiO₂ from Panzhihua Titanium Slag by NaOH Decomposing-HCl Leaching[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(3): 1-6. doi: 10.7513/j.issn.1004-7638.2019.03.001

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Preparation of TiO₂ from Panzhihua Titanium Slag by NaOH Decomposing-HCl Leaching

doi: 10.7513/j.issn.1004-7638.2019.03.001

1. Naval Aeronautic Military Representative Office in Shenyang, Shenyang 110000, Liaoning, China;
2. Institute of Metallurgical Physical Chemistry, Northeastern University, Shenyang 110006, Liaoning, China

Received Date: 2019-01-22

Abstract

Abstract

TiO₂ was prepared by a process of NaOH decomposing-HCl leaching with titanium slag from Panzhihua as raw material.The phase transformations of titanium slag during NaOH decomposition were analyzed using XRD.The results suggest that the decomposition of titanium slag by NaOH is a multistage process,viz.M₃O₅(M=Fe²⁺,Ti³⁺,Ti⁴⁺)→Fe₃Ti₃O₁₀ → Fe₂TiO₅ → α-NaFeO₂,Na₂TiO₃.The effects of HCl concentration,amount of Fe additive,solution pH,deposition temperature and time on the content of TiO₂ in the final products were studied during the HCl leaching process.The optimized conditions are determined at HCl concentration of 5 mol/L,Fe addition amount of 0.6 g,deposition time of 40 min,deposition temperature of 45℃ and solution pH=2,with 98.36% of TiO₂ in the final products.
- TiO₂,
- titanium slag,
- NaOH decomposing-HCl leaching,
- phase