Production of high-purity rutile titanium dioxide by leaching water-quenched titanium-bearing blast furnace slag with hydrochloric acid

Huang Xianliang; Zhong Shan; Tang Siyang; Song Lei; Li Hongjiao; Liang Bin

doi:10.7513/j.issn.1004-7638.2023.03.004

Volume 44 Issue 3

Jun. 2023

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Huang Xianliang, Zhong Shan, Tang Siyang, Song Lei, Li Hongjiao, Liang Bin. Production of high-purity rutile titanium dioxide by leaching water-quenched titanium-bearing blast furnace slag with hydrochloric acid[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 23-32. doi: 10.7513/j.issn.1004-7638.2023.03.004

Citation:

Huang Xianliang, Zhong Shan, Tang Siyang, Song Lei, Li Hongjiao, Liang Bin. Production of high-purity rutile titanium dioxide by leaching water-quenched titanium-bearing blast furnace slag with hydrochloric acid[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 23-32. doi: 10.7513/j.issn.1004-7638.2023.03.004

Citation:

Huang Xianliang, Zhong Shan, Tang Siyang, Song Lei, Li Hongjiao, Liang Bin. Production of high-purity rutile titanium dioxide by leaching water-quenched titanium-bearing blast furnace slag with hydrochloric acid[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 23-32. doi: 10.7513/j.issn.1004-7638.2023.03.004

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Production of high-purity rutile titanium dioxide by leaching water-quenched titanium-bearing blast furnace slag with hydrochloric acid

doi: 10.7513/j.issn.1004-7638.2023.03.004

School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China

Received Date: 2023-03-12
Publish Date: 2023-06-30

Abstract

Abstract

Hydrochloric acid method was used for the leaching of water-quenched titanium-bearing blast furnace slag in this work. According to the leaching and solid-liquid separation process, valuable elements including titanium and aluminum were concentrated in the solution. With further hydrolysis and precipitation, high-purity rutile titanium dioxide and alumina oxide can be obtained. In order to obtain optimized leaching processing parameters, the effects of acid concentration, liquid-solid ratio, reaction temperature and reaction time on the leaching efficiency of different elements in titanium-bearing blast furnace slag were systematically investigated. When the leaching temperature is 90 °C, hydrochloric acid concentration is 33%, liquid-solid ratio is 15 : 1 (mL : g), and leaching time is 30 min, the leaching efficiency of titanium reaches 75.3%. By hydrolysis at 130 °C and following drying process, rutile titanium dioxide with a purity of 97.7% can be obtained. This method can be directly applied for the recovery of valuable titanium from the water-quenched titanium-bearing blast furnace slag and for the production of high purity titanium dioxide, with short process and low energy consumption, which can provide practical support for the resourceful utilization of titanium-bearing blast furnace slag.
- titanium-bearing blast furnace slag,
- hydrochloric acid leaching,
- rutile titanium dioxide

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References(29)

References

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