Study on the effect of microwave pretreatment on the grinding characteristics of vanadium titanium-magnetite based on grinding kinetics

WANG Junpeng

doi:10.7513/j.issn.1004-7638.2025.01.016

Volume 46 Issue 1

Feb. 2025

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WANG Junpeng. Study on the effect of microwave pretreatment on the grinding characteristics of vanadium titanium-magnetite based on grinding kinetics[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 107-111. doi: 10.7513/j.issn.1004-7638.2025.01.016

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WANG Junpeng. Study on the effect of microwave pretreatment on the grinding characteristics of vanadium titanium-magnetite based on grinding kinetics[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 107-111. doi: 10.7513/j.issn.1004-7638.2025.01.016

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Study on the effect of microwave pretreatment on the grinding characteristics of vanadium titanium-magnetite based on grinding kinetics

doi: 10.7513/j.issn.1004-7638.2025.01.016

WANG Junpeng

College of innovation and entrepreneurship, Liaoning Petrochemical University, Fushun 113001, Liaoning, China

Received Date: 2024-09-03
Publish Date: 2025-02-27

Abstract

Abstract

Batch grinding experiments of vanadium titanium-magnetite (VTM) with different grinding times before and after microwave treatment were carried out. The m-order grinding kinetics model of untreated and microwave treated VTM was established, and the effects of particle size and grinding time on the grinding speed were analyzed. In the initial stage of grinding, the number of microcracks was the main factor affecting the grinding speed. While in the middle and later stages of grinding, the grinding probability became the main factor affecting the grinding speed. The grinding speed of the coarse-grained (−3.350~+1.700 mm) ore after microwave pretreatment was much higher than that of the untreated ore, while the grinding speed of fine-grained (−0.057~+0.045 mm) ore changed slightly. Microwave assisted grinding of VTM is beneficial to improving the particle size composition of the grinding products, thus improving the separation efficiency and the concentrate quality.
- vanadium titano-magnetite,
- microwave pretreatment,
- grinding kinetics,
- grinding speed

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References(14)

References

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