( 3987) The Corrosion Behavior of Manganese Ions on the Vanadium-Containing Biotite Surface and Its Effect on Leaching Rate

Hao Zhang; Guohua Ye; Ziyang Chen

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( 3987) The Corrosion Behavior of Manganese Ions on the Vanadium-Containing Biotite Surface and Its Effect on Leaching Rate

机译：( 3987) The Corrosion Behavior of Manganese Ions on the Vanadium-Containing Biotite Surface and Its Effect on Leaching Rate

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Leaching is the continuous separation of elements from the mineral surface which is composed of coordination polyhedrons of atoms. The interaction between surface elements and the leaching agent is the prerequisite for separation. Density functional theory calculations are used to reveal the interaction between leaching agent ions (H+ ), activator agent ions (Mn4+), and the vanadium-containing biotite surface. According to the calculation results, the oxidative activation acid-leaching process is simulated. In the oxidative activation acidleaching process, the surface oxygen atoms first absorb hydrogen ions to complete the hydroxylation process and then combines hydrogen ions again to form water molecules. And when the surface tetrahedron has oxygen defects, the oxidant ions can further corrode the tetrahedral structure with oxygen defects. This corrosion can destroy tetrahedral structures. When the tetrahedral structure is destroyed, cations are released from the mineral surface into the solution. In this study, the corrosion behavior of the oxidant ion and its effect on the leaching rate is found. The separation of atoms from the surface under oxidative activation leaching environments is simulated at the atomic level, and the mechanism of the activated leaching process is revealed by electron probe, scanning electron microscopy, infrared, and other methods.

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《Corrosion: The Journal of Science and Engineering》 |2022年第4期|1-10|共10页
作者
Hao Zhang; Guohua Ye; Ziyang Chen;
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作者单位

Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China;

Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China;

State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming 650093, China.;

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正文语种英语
中图分类金属腐蚀与保护、金属表面处理;
关键词
density functional theory-based calculation; leaching; simulation calculation; vanadium;

( 3987) The Corrosion Behavior of Manganese Ions on the Vanadium-Containing Biotite Surface and Its Effect on Leaching Rate

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