Study on the effect of calcined seed crystal addition on the quality of TiO<sub>2</sub>

Wu Jianchun; Lu Ruifang; Sun Qiang; Shi Ruicheng; Liu Chan

doi:10.7513/j.issn.1004-7638.2023.01.003

Volume 44 Issue 1

Feb. 2023

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Wu Jianchun, Lu Ruifang, Sun Qiang, Shi Ruicheng, Liu Chan. Study on the effect of calcined seed crystal addition on the quality of TiO2[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 10-14. doi: 10.7513/j.issn.1004-7638.2023.01.003

Citation:

Wu Jianchun, Lu Ruifang, Sun Qiang, Shi Ruicheng, Liu Chan. Study on the effect of calcined seed crystal addition on the quality of TiO₂[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 10-14. doi: 10.7513/j.issn.1004-7638.2023.01.003

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Study on the effect of calcined seed crystal addition on the quality of TiO₂

doi: 10.7513/j.issn.1004-7638.2023.01.003

1.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China
2.
School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
3.
School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China

Received Date: 2022-01-15
Publish Date: 2023-02-28

Abstract

Abstract

Using hydrolyzed metatitanic acid and calcined seed crystals as raw materials, different proportions of calcined seed crystals were added to metatitanic acid, and the calcination temperature was adjusted to prepare the TiO₂ product with a rutile content of 98% to 99%. The influence of the amount of calcined seed crystals on the calcining temperature was investigated. Then the crystal structure, morphology, particle size distribution and pigment properties of the TiO₂ were analyzed by XRD, SEM and other means. The results show that as the content of calcined seed crystals increases, the calcination temperature required for qualified rutile shows a downward trend. When the amount of calcined seed crystals increases from 4% to 6%, the required calcination temperature has little effect. As the amount of seed crystals increases, the average particle size of the TiO₂ product shows a downward trend, and the dispersion coefficient shows a trend of first decreasing and then increasing. When the amount of seed crystals increases to 6%, the dispersion coefficient is the smallest. With the increase in the amount of calcined seed crystals, the SCX value of the aluminum-based and zinc-based salt treated samples showed an increasing trend with the increase in the amount of seed crystals, and the TCS value showed a trend of first increasing and then decreasing. When the amount of calcined seed crystals is about 5%, the TCS value of the sample reaches the best value.
- titanium dioxide,
- calcined seed crystal,
- particle size,
- dispersion coefficient,
- pigment performance

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References(8)

References

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