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Showing 1 to 4 of 4 for “"Tribocharging"”.
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Modeling and Experimental Measurement of Triboelectric Charging in Dielectric Granular Mixtures
… in a vacuum chamber, allowing us to induce tribocharging in dielectric grains in a controlled airless environment and measure individual charge and diameter of a grain by dropping samples through a transverse electric field. We observed that mixtures of zirconia-silica grains containing two …
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A Study of Triboelectrification for Coal , Quartz and Pyrite
… the mixer. This device was used to study the tribocharging mechanisms of coal, quartz, and pyrite as functions of the air velocity, particle feed rate, particle size, temperature, ash content, and the work functions of the materials that make up the in-line mixer. Evidence suggests that the …
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Design And Testing Of A Triboelectrostatic Separator For Cleaning Coal
Numerous advanced coal-cleaning processes have been developed in recent years that are capable of substantially reducing both ash and sulfur-forming minerals from coal. However most of the processes involve fine grinding and use water as a medium; therefore, the clean coal products must be …
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The feasibility of using electrostatic charge condition monitoring for lubricant additive screening
… inversion; this was due to a transition between tribocharging of the lubricant under running-in and mild wear, and contact potential difference generated at the onset and progression of adhesive wear. It was found that charge signals differed between different oils, which could not be explained …