Understanding Size Segregation in Tumbling Mills

Soni, Rahul; Mishra, B.K.

doi:10.1007/978-981-10-1926-5_120

Cited by 3 publications

(2 citation statements)

References 40 publications

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“…The small media in the kidney rub against each other and wear into cubic shapes. At higher mill rotational speeds, Soni and Mishra [7] observed that it is the bigger balls which occupy the kidney area, while smaller balls move closer to the periphery. However, at intermediate speed, the charge dynamics attain a perfect transition state, representing the uniform distribution of contacts.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Gupta and Yuan [1] observed that a corresponding 2% of ball grinding media is consumed for every 1% change in mill speed. At a low mill rotational speed, Soni and Mishra [7] perceived that bigger balls move near the periphery of the mill and smaller balls clutter around the kidney of the charge, in which very little grinding work is performed. The small media in the kidney rub against each other and wear into cubic shapes.…”

Section: Introductionmentioning

confidence: 99%

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A Review of the Grinding Media in Ball Mills for Mineral Processing

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The ball mill is a rotating cylindrical vessel with grinding media inside, which is responsible for breaking the ore particles. Grinding media play an important role in the comminution of mineral ores in these mills. This work reviews the application of balls in mineral processing as a function of the materials used to manufacture them and the mass loss, as influenced by three basic wear mechanisms: impact, abrasion, and corrosion. The effect of grinding media geometries and density on the mill performance was also reviewed to determine what the research has recommended as the most suitable grinding media for different grinding applications. Although considerable work has been carried out in that area, the influence of grinding media shape on the liberation of minerals, as well as the effect of various mill conditions on the performance of mixed grinding media shapes, are still poorly understood. Thus, the review opens up opportunities for further research to improve the grinding processes, especially considering that even a slight improvement in the process efficiency significantly reduces the production costs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review of the Grinding Media in Ball Mills for Mineral Processing

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View full text Add to dashboard Cite

show abstract

CFD and DEM numerical modelling of industrial vibrating desliming screen for performance optimization and minimal misplacement

et al. 2023

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Review on the chemical reduction modelling of hematite iron ore to magnetite in fluidized bed reactor

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Eswaraiah

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et al. 2022

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Steel production is considered as one of the major backbones of many economies. Though blast furnace is the primary route of steel production, the industries are willing to alternatives technologies such as the high temperature-controlled conversion of hematite to magnetite. The geological and mineralogical characteristics of the low-grade iron ores possess difficulties in their conventional enrichment. The literature concludes the advantages of high-temperature conversion in terms of easiness in downstream operations caused by decreased hardness and increased magnetic susceptibility of magnetite. The modelling work has been primarily focused on the direct reduction of iron ore to metallic iron. The present compilation discusses the scientific and engineering developments on the reduction-roasting of iron-ore followed by the CFD–DEM modelling and simulation work performed to reduce iron ore to magnetite. It provides a comprehensive review of the experimental and industrial progress done in the area.

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Understanding Size Segregation in Tumbling Mills

Cited by 3 publications

References 40 publications

A Review of the Grinding Media in Ball Mills for Mineral Processing

A Review of the Grinding Media in Ball Mills for Mineral Processing

CFD and DEM numerical modelling of industrial vibrating desliming screen for performance optimization and minimal misplacement

Review on the chemical reduction modelling of hematite iron ore to magnetite in fluidized bed reactor

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