Experimental study on fine particle separation in a wet electrostatic classifier

Yuan, Fangyang; Yu, Jianfeng; Zheng, Xiaolong

doi:10.1016/j.cep.2020.108108

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…High-voltage electrostatic technology has a significant effect on the separation of small-particle-sized mixed particles compared with eddy current separation [21]. Fangyang Yuan [22] achieved the separation of mixed particles by applying a static electric field in the classification area of the wet classifier. They used silica particles in the range of 0.21-8.71 µm as raw materials for the classification and separation experiment, with a total separation efficiency of 61.9%.…”

Section: Introductionmentioning

confidence: 99%

Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process

Zhu

Bai

et al. 2023

Separations

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The improper disposal of retired lithium batteries will cause environmental pollution and a waste of resources. In this study, a waste lithium iron phosphate battery was used as a raw material, and cathode and metal materials in the battery were separated and recovered by mechanical crushing and electrostatic separation technology. The effects on material electrostatic separation of separation parameters such as the crushing particle size, the voltage of the static electrode, and the rotating speed of the grounding rotor were all studied combined with trajectory simulation and separation experiments. The results show that the crushing particle size of the material has the most significant impact on the separation effect, and the material separation effect primarily occurs in the range of 0.2–2.0 mm particle sizes. When the voltage of the static electrode is 30 kV, the rotating speed of the grounded rotor is 60 r/min, and the particle size is 0.4–0.8 mm, and the recovery rates for aluminum, copper, and lithium iron phosphate reach 93.2%, 91.1%, and 97.1%, respectively. In the recovery process for waste lithium batteries, using electrostatic separation technology instead of high-temperature roasting or chemical leaching can effectively improve the separation efficiency and reduce secondary pollution.

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Section: Introductionmentioning

confidence: 99%

Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process

Zhu

Bai

et al. 2023

Separations

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“…HEPA filters can separate particles of this size, but the operation of these devices is associated with high-pressure loss, high cost and frequent maintenance requirements due to intensive clogging [9]. From the group of dry separators, an electrostatic precipitator [10] is most often used to capture fine particles. For small combustion plants, however, a major technical complication is to supply the electrostatic precipitator with electricity or provide water for wet separators [11].…”

Section: Introductionmentioning

confidence: 99%

Controlled nanoparticle growth by vapour condensation

Sitek

Köbölová

Poláčik

et al. 2021

NANOCON 2021 Conference Proeedings

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Domestic boilers are generally characterized by higher emissions of airborne dust. A commonly used secondary method of reducing emissions in the energy sector is a cyclone. However, its wider expansion in households is limited by, among other things, the low efficiency of particle capture below 1 micrometre in diameter, and it is these sizes that dominate in the flue gas of domestic heating devices. By sharply lowering the temperature of the flue gas below the dew point of the vapour, it condenses on all available surfaces. This effect could increase the diameter of the particles, which could be separated with higher efficiency. A change in the numerical distribution of the fine particles with a temperature and thus the supersaturation of the flue gas was sought. The flue gas passed through an impinger filled with water and isopropyl alcohol at three different temperature regimes. The impinger also served to capture the condensate, which was then subjected to morphology analysis using an electron microscope and determination of particle distribution in the condensate.

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Experimental study on fine particle separation in a wet electrostatic classifier

Cited by 2 publications

References 24 publications

Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process

Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process

Controlled nanoparticle growth by vapour condensation

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