Digestion Kinetics of Fe during Leaching from Roasting Materials of Laterite Nickel Ore and Ammonium Sulfate

LI Jie; XU Yujun; SHEN Hongtao; XIN Haixia; ZHAI Yuchun

doi:10.13779/j.cnki.issn1001-0076.2018.06.007

2018 Vol. 38, No. 6

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Article navigation > Conservation and Utilization of Mineral Resources > 2018 > (6): 37-40, 45

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LI Jie, XU Yujun, SHEN Hongtao, XIN Haixia, ZHAI Yuchun. Digestion Kinetics of Fe during Leaching from Roasting Materials of Laterite Nickel Ore and Ammonium Sulfate[J]. Conservation and Utilization of Mineral Resources, 2018, (6): 37-40, 45. doi: 10.13779/j.cnki.issn1001-0076.2018.06.007

Citation:

LI Jie, XU Yujun, SHEN Hongtao, XIN Haixia, ZHAI Yuchun. Digestion Kinetics of Fe during Leaching from Roasting Materials of Laterite Nickel Ore and Ammonium Sulfate[J]. Conservation and Utilization of Mineral Resources, 2018, (6): 37-40, 45. doi: 10.13779/j.cnki.issn1001-0076.2018.06.007

Digestion Kinetics of Fe during Leaching from Roasting Materials of Laterite Nickel Ore and Ammonium Sulfate

1.
School of Metallurgy Northeastern University, Shenyang 110819, China
2.
School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
3.
Key laboratory of Clean Conversion and Efficient Utilization to Resource in Qinhuangdao, Qinhuangdao 066004, China

More Information

Corresponding author: XIN Haixia, xinhaixia2008@163.com

Received Date: 23 July 2018

Publish Date: 25 December 2018

Abstract

Abstract

The roasting materials of laterite nickel ore and ammonium sulfate were used as the research object for Fe leaching by water dissolution method. The effects of dissolution temperature, liquid-solid ratio, dissolution time and stirring intensity on the dissolution rate of iron were systematically studied. The dissolution kinetics of Fe was also explored. The results show that the dissolution rate of iron can reach more than 99% when the dissolution temperature is 60 ℃, the dissolution time is 60 min, the liquid-solid ratio is 2.5 GA6FA 1, and the stirring strength is 400 r·min^-1. The kinetic analysis shows that the dissolution reaction of Fe is controlled by external diffusion. According to the Arrhenius empirical equation, the apparent activation energy of the reaction is E=7.23 kJ·mol^-1, and the kinetic equation of dissolution process is 1-(1-α)^2/3=0.208 5exp (-7 234/RT)t.
- laterite nickel ore /
- roasting /
- Fe leaching /
- dynamics /
- ammonium sulfate

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References

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