Study on the acidolysis properties of titanium ore recovered from acidolysis residue

Wu Jianchun; Lu Ruifang; Shi Ruicheng

doi:10.7513/j.issn.1004-7638.2021.03.006

Volume 42 Issue 3

Jun. 2021

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Wu Jianchun, Lu Ruifang, Shi Ruicheng. Study on the acidolysis properties of titanium ore recovered from acidolysis residue[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 37-43. doi: 10.7513/j.issn.1004-7638.2021.03.006

Citation:

Wu Jianchun, Lu Ruifang, Shi Ruicheng. Study on the acidolysis properties of titanium ore recovered from acidolysis residue[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 37-43. doi: 10.7513/j.issn.1004-7638.2021.03.006

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Study on the acidolysis properties of titanium ore recovered from acidolysis residue

doi: 10.7513/j.issn.1004-7638.2021.03.006

Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China

Received Date: 2020-06-18
Publish Date: 2021-06-10

Abstract

Abstract

Using the titanium ore recovered from the acidolysis residue and the conventional titanium concentrate as raw materials, the differences in chemical compositions, phase structures and occurrence states of titanium between the materials were analyzed and compared by chemical analysis, XRD, SEM and lithofacies analyses. Based on the analyses, the acidolysis experiments were carried out. The results show that the grade of TiO₂ in the recovered ore is about 38%, 10% lower than that in the conventional titanium concentrate. The main phase is ilmenite accounting for about 65%, followed by quartz and silicate phases. Titanium mainly occurs in ilmenite, accounting for about 87%. The recovered ore has better acidolysis performance because of its smaller particle size and more cracks on the surface. However, the titanium concentration of acidolysis solution is lower due to the lower grade of the recovered ore, which is not conducive to the latter concentration. The recovered ore can be mixed with Panzhihua PT20 ore for acidolysis, which has no adverse effect on the acidolysis rate. At the addition ratio of 10%～15%, the comprehensive effects of acidolysis rate and filtration speed are the best. However, when the recovered ore is mixed with Baima 20 ore for acidolysis, the higher magnesium content in Baima 20 ore leads to the increase of titanium liquid density, and the silica-containing flocs are not easy to settle and the filtration speed is slow.
- titanium concentrate,
- residue,
- magnetic separation,
- acidolysis,
- settlement

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References(6)

References

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