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Updated: Feb 7, 2026
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Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
Published on: September 21, 2011
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Insight into Nanobubble-Enhanced Flotation Separation of Microfine Ilmenite from Forsterite: Selective Adhesion and
Fanfan Zhang1,2,3, Xiaoman Wang1,4, Huaiyao Zhang1,4
1Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, Henan, China.
Langmuir : the ACS Journal of Surfaces and Colloids
|February 5, 2026
Summary
Nanobubbles (NBs) significantly improve low-grade ilmenite flotation by enhancing hydrophobicity of fine particles. This study shows NBs effectively beneficiate microfine ilmenite, overcoming challenges of small particle size and large surface area.
Area of Science:
- Mineral Processing
- Materials Science
- Chemical Engineering
Background:
- Low-grade ilmenite flotation is challenging due to fine particle size and high specific surface area.
- Nanobubbles (NBs) show potential for enhancing fine particle flotation.
Purpose of the Study:
- To investigate the effectiveness of nanobubbles (NBs) produced via hydrodynamic cavitation for the flotation of microfine ilmenite (-20 μm).
- To evaluate the impact of NBs on ilmenite recovery and selectivity against forsterite.
Main Methods:
- Utilized hydrodynamic cavitation to generate nanobubbles (NBs).
- Introduced NBs into the flotation process of -20 μm ilmenite.
- Analyzed the effect of NBs on ilmenite and forsterite recovery with varying collector concentrations.
Main Results:
- NBs significantly enhanced the flotation of microfine ilmenite.
- Achieved a recovery difference of 49.37% between ilmenite and forsterite at 20 mg/L collector.
- Observed selective adhesion of NBs on the ilmenite surface, increasing hydrophobicity.
Conclusions:
- Nanobubbles are an effective strategy for improving the flotation performance of low-grade, microfine ilmenite.
- NBs enhance hydrophobic interactions, leading to improved recovery and selectivity in mineral processing.
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