Effect of Intensive Abrasion Breakage on Secondary Ball Mills for Magnetite

Yuan, Chengfang; Wu, Caibin; Li, Ling; Li, Zheyang; Xie, Feng; Yao, Xin; Wang, Yihan

doi:10.3390/min13060713

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…This mechanism is related to the compressive strength and impact resistance of minerals [43,44]. For ceramic ball grinding, the instant kinetic energy of ball and mineral collisions has more difficultly in completing the breakage of minerals, the crushing process primarily relies on tangential stress-based abrasion, which is related to the wear resistance of the minerals [45].…”

Section: Cumulative Distribution Functionmentioning

confidence: 99%

Ceramic Grinding Kinetics of Fine Magnetite Ores in the Batch Ball Mill

Yuan,

Wu,

Ling

et al. 2023

Minerals

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Aiming to reveal the kinetic characteristics of ceramic ball grinding of fine magnetite comprehensively, two types of ceramic balls ground with the same filling rate and total weight as steel balls were researched. The results show that the breakage rate of ceramic ball grinding is only half of that of steel ball grinding with the same media filling rate. With the same total media weight and a feed size less than 0.212 mm, the breakage rate of the ceramic ball grinding approaches the steel ball grinding and is 17.14% higher than that of the steel ball grinding. The main crushing form of magnetite changed from impact to abrasion in ceramic ball grinding compared with steel ball grinding, which significantly affected the value of the zero-order output constant a. The shift indirectly led to a very different character of the variation ing the parameter β, related to the fines generation rate in the cumulative distribution function of the ceramic ball grinding compared to the steel ball grinding. Therefore, ceramic grinding with a high ball-filling rate can greatly save on energy consumption under the premise of meeting normal production.

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Section: Cumulative Distribution Functionmentioning

confidence: 99%

Ceramic Grinding Kinetics of Fine Magnetite Ores in the Batch Ball Mill

Yuan,

Wu,

Ling

et al. 2023

Minerals

Self Cite

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show abstract

“…Studies have demonstrated that the mechanical forces in ball mills facilitate the breakage and fracturing of ore particles, leading to enhanced mineral liberation. Moreover, the design and operational parameters of ball mills, such as the size and density of the grinding media [4], rotational speed [5], and the milling environment [6], significantly impact the milling performance and the energy efficiency of the process. This underscores the importance of optimizing ball milling conditions to achieve the desired mineral processing outcomes.…”

Section: Introductionmentioning

confidence: 99%

Scaling Energy Transfer in Ball Mills: A Scale-Agnostic Approach through a Universal Scaling Constant

Doroszuk,

Bortnowski,

Ozdoba

et al. 2024

Energies

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Ball mills are widely used for size reduction in mineral processing, but effective scaling from laboratory to industrial scale remains challenging. This study introduces a novel scaling constant approach to replicate energy transfer to ore during milling across different scales by adjusting rotational speed and grinding medium size distribution. The scaling constant encapsulates parameters like the number of balls per working area, rotational speed, and an average ball’s maximum potential and kinetic energies. Experiments were conducted using a laboratory ball mill with interchangeable drum sizes (300, 400, and 500 mm) and a Design of Experiments methodology. Statistical analysis revealed that the scaling constant was more effective at maintaining consistent specific energy and energy per rotation across scales than size reduction, especially in dry milling. Wet milling results showed no significant differences in all metrics across scales. The dominant charge motion shifted from centrifuging to cascading as the mill diameter increased, highlighting the complex scaling dynamics. While the scaling constant shows promise for maintaining energy utilization, additional factors like charge motion and particle breakage mechanisms should be considered. The findings provide insights for improving ball mill design and optimization in mineral processing.

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Ceramic Grinding Kinetics of Fine Magnetite Ores in the Batch Ball Mill

Yuan¹,

Wu²,

Li³

et al. 2023

Preprint

View full text Add to dashboard Cite

Aiming to reveal the kinetic characteristics of ceramic ball grinding of fine magnetite comprehensively, two types of ceramic balls ground with the same filling rate and total weight as steel balls were researched. The results show that the breakage rate of ceramic ball grinding is only half of that of steel ball grinding with the same media filling rate. With the same total media weight and the feed size less than 0.212 mm, the breakage rate of the ceramic ball grinding approaches the steel ball grinding and is 21.43% higher than that of the steel ball grinding. The main crushing form of magnetite changed from impact to abrasion in ceramic ball grinding compared with steel ball grinding, which significantly affected the value of the zero-order output constant a. Consequently, there is a noticeable difference in the variation of the parameter β related to the fines generation rate of the ceramic ball grinding compared with the steel ball grinding.

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Effect of Intensive Abrasion Breakage on Secondary Ball Mills for Magnetite

Cited by 3 publications

References 25 publications

Ceramic Grinding Kinetics of Fine Magnetite Ores in the Batch Ball Mill

Ceramic Grinding Kinetics of Fine Magnetite Ores in the Batch Ball Mill

Scaling Energy Transfer in Ball Mills: A Scale-Agnostic Approach through a Universal Scaling Constant

Ceramic Grinding Kinetics of Fine Magnetite Ores in the Batch Ball Mill

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