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- Title
微细粒黑钨矿疏水絮凝浮选中聚团形成机制.
- Authors
孟庆有; 袁致涛; 杨建超
- Abstract
The flocs formation mechanism of fine wolframite is systematically studied by hydrophobic flocculation experiments, atomic force microscope analyses, and numerical simulations. The results show that sodium oleate induces the surface hydrophobicity of wolframite and further generate hydrophobic flocculation within pH 8.0~8.5, and the apparent particle size D50 of the hydrophobic flocs of fine wolframite is positively correlated with sodium oleate concentration and stirring strength. There is a strong adhesion force between wolframite particles in the sodium oleate system, and the hydrophobic force is the main contribution component to the formation of hydrophobic flocs. The strong turbulent fluid environment formed in the stirring device contributes to the mutual contact and energy transfer of mineral particles, increasing the particle collision adhesion probability. The combination of high shear force and sodium oleate induced hydrophobic force can promote the formation of large and stable flocs of fine wolframite. The WO3 recovery in the hydrophobic flocculation flotation of wolframite slimes increases by 12.04% compared with the conventional flotation.
- Subjects
ATOMIC force microscopes; WOLFRAMITE; ENERGY minerals; COLLISIONS (Nuclear physics); SHEARING force; FLOCCULATION
- Publication
Journal of Northeastern University (Natural Science), 2023, Vol 44, Issue 7, p1002
- ISSN
1005-3026
- Publication type
Article
- DOI
10.12068/j.issn.1005-3026.2023.07.012