Study on iron removal from industrial titanium gypsum

Peng Musen; He Lin; Li Haiyan; Luo Jianhong

doi:10.7513/j.issn.1004-7638.2023.06.016

Volume 44 Issue 6

Dec. 2023

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Peng Musen, He Lin, Li Haiyan, Luo Jianhong. Study on iron removal from industrial titanium gypsum[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(6): 110-116. doi: 10.7513/j.issn.1004-7638.2023.06.016

Citation:

Peng Musen, He Lin, Li Haiyan, Luo Jianhong. Study on iron removal from industrial titanium gypsum[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(6): 110-116. doi: 10.7513/j.issn.1004-7638.2023.06.016

Peng Musen, He Lin, Li Haiyan, Luo Jianhong. Study on iron removal from industrial titanium gypsum[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(6): 110-116. doi: 10.7513/j.issn.1004-7638.2023.06.016

Citation:

Peng Musen, He Lin, Li Haiyan, Luo Jianhong. Study on iron removal from industrial titanium gypsum[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(6): 110-116. doi: 10.7513/j.issn.1004-7638.2023.06.016

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Study on iron removal from industrial titanium gypsum

doi: 10.7513/j.issn.1004-7638.2023.06.016

1.
Insititute of Chemical Engineering, Sichuan University, Chengdu 610000, Sichuan, China
2.
Guizhou Sunward Chemical New Materials Research Institute Co., Ltd., Zunyi 563102, Guizhou, China

Received Date: 2023-07-05
Available Online: 2024-01-11
Publish Date: 2023-12-30

Abstract

Abstract

In this study, the removal of iron impurity contained in the industrial sulfuric acid leaching titanium gypsum was investigated, which leads to effective improvement of purity and whiteness of titanium gypsum, providing sufficient raw materials for the development and utilization of titanium gypsum downstream products. The effect of iron removal under different acid leaching conditions such as solid-liquid ratio, reaction temperature, reaction time, rotation speed, particle size and sulfuric acid concentration was studied and the optimum process conditions was discovered. Furthermore, the impurity removal mechanism of titanium gypsum was found out based on the changes of phase, microstructure and particle size distribution. During the process of removing iron from titanium gypsum by sulfuric acid leaching, the optimal process parameters are obtained as follows: solid-liquid ratio of 1:10 g/g, reaction temperature of 70 ℃, reaction time of 60 min, SO₄²⁻ mass fraction of 7%, rotating speed of 400 r/min and particle size of 150 μm, under which the iron removal leaching rate of titanium gypsum can reach 94%. Under the optimal conditions, the acid leaching product changes from light yellow to gray white, and the whiteness is evidently improved.
- titanium gypsum,
- iron removal,
- Fe²⁺,
- sulfuric acid,
- solid-liquid ratio,
- reaction temperature,
- leaching rate

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References(20)

References

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