Study on the selective separation of magnetite and hornblende using soluble starch

LI Wanxing; ZHU Siyu; LU Zetong; LIU Shuang'an; ZHANG Qi; ZHANG Pengyu; LI Hongqiang

doi:10.7513/j.issn.1004-7638.2026.03.022

Volume 47 Issue 3

Jun. 2026

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LI Wanxing, ZHU Siyu, LU Zetong, LIU Shuang'an, ZHANG Qi, ZHANG Pengyu, LI Hongqiang. Study on the selective separation of magnetite and hornblende using soluble starch[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 189-196. doi: 10.7513/j.issn.1004-7638.2026.03.022

Citation:

LI Wanxing, ZHU Siyu, LU Zetong, LIU Shuang'an, ZHANG Qi, ZHANG Pengyu, LI Hongqiang. Study on the selective separation of magnetite and hornblende using soluble starch[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 189-196. doi: 10.7513/j.issn.1004-7638.2026.03.022

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Study on the selective separation of magnetite and hornblende using soluble starch

doi: 10.7513/j.issn.1004-7638.2026.03.022

1.
An Steel Mining Engineering Corporation, Anshan 114004, Liaoning, China
2.
Wuhan institute of Technology, Wuhan 430205, Hubei, China
3.
Hubei Yihua Environmental Protection Technology Co., Ltd., Yidu 443311, Hubei, China
4.
Zhongye Changtian International Engineering Co. Ltd. , Changsha 410205, Hunan, China

More Information

Received Date: 2025-11-22
Accepted Date: 2025-12-29
Rev Recd Date: 2025-12-24
Publish Date: 2026-06-29

Abstract

Abstract

Hornblende is a ferrous silicate mineral with similar floatability to magnetite, making the two minerals difficult to separate. The feasibility of Soluble Causticized Starch (TF) as depressant of magnetite was assessed in the single-mineral, artificial-mixed-ore and natural ore flotation test. Meanwhile, the adsorption mechanisms of TF on magnetite surface were investigated through contact angle measurement, Zeta potential measurement, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The flotation test results showed that under the condition of pH=7, 7.5 mg/L collector 609 and 10 mg/L TF could effectively depress magnetite, but the depression effect on hornblende was not obvious. Flotation tests on raw ore further confirmed that TF not only could be used as an depressant for the separation of magnetite and hornblende, but also alleviate excessive foam formation. TF adsorbs on the surface of magnetite, thereby significantly increasing its hydrophilicity. Oxygen-containing functional groups -COOH, -OH forming coordination bonds with surface Fe of magnetite via chemical adsorption hinders the adsorption of collector 609 on magnetite surface effectively.
- magnetite,
- hornblende,
- flotation,
- depressant,
- chemical adsorption

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References(15)

References

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