Study on concentration process of titanium white waste acid by sulfuric acid method

Wang Haibo; Sun Ke

doi:10.7513/j.issn.1004-7638.2023.05.018

Volume 44 Issue 5

Oct. 2023

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Wang Haibo, Sun Ke. Study on concentration process of titanium white waste acid by sulfuric acid method[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(5): 116-121. doi: 10.7513/j.issn.1004-7638.2023.05.018

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Wang Haibo, Sun Ke. Study on concentration process of titanium white waste acid by sulfuric acid method[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(5): 116-121. doi: 10.7513/j.issn.1004-7638.2023.05.018

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Study on concentration process of titanium white waste acid by sulfuric acid method

doi: 10.7513/j.issn.1004-7638.2023.05.018

Wang Haibo,
Sun Ke

State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China

Received Date: 2023-06-29
Available Online: 2023-11-04
Publish Date: 2023-10-31

Abstract

Abstract

In order to improve the efficiency of waste acid concentration, the single factor test and orthogonal test of waste acid concentration process were carried out in the laboratory by using vacuum rotary evaporator to simulate the vacuum evaporation concentration of waste acid. Then, based on the results of laboratory research, the industrial test of waste acid concentration process optimization was carried out in the field. The results show that the density of waste acid is larger than that of pure sulfuric acid under the same sulfuric acid concentration, and the density difference between them decreases with the increase of sulfuric acid concentration. With the increase of concentration time, temperature and vacuum degree of waste acid, the concentration of waste acid increases gradually. The key influencing factors affecting the concentration of waste acid are concentration time, concentration vacuum degree, concentration time ×concentration vacuum degree and concentration temperature. The order of importance is concentration time > concentration vacuum degree > concentration vacuum degree × concentration time > concentration temperature. The industrial test results show that when the concentration time, concentration temperature and concentration vacuum degree of waste acid increase from 2.06 h, 108 °C and 30 kPa to 2.68 h, 112 °C and 45 kPa, respectively, the average concentration of primary concentrated acid increases from 29.5% to 38.5%. The research results provide important data and theoretical support for improving the concentration efficiency of waste acid in titanium dioxide production enterprises by sulfuric acid method.
- sulfate process titanium dioxide,
- waste acid,
- evaporator concentration process,
- sulfuric acid concentration

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References(13)

References

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