Prospects for the use of dielectric barrier discharge in electrostatic separation

Дмитриев, С. В.; «Mekhanobr-Tekhnika», Rec; Grigoryev, I. V.

doi:10.17580/or.2018.04.07

Cited by 4 publications

(4 citation statements)

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“…ASP-30 and ASP-22 powders have similar asymmetric distributions with a SPAN of 1.480 and 1.756, respectively. It was decided to experiment with only one powder and check the applicability of this method to the ASP-30 powder with larger particles (see Figure 4) because, traditionally, separators are used for classification materials with particle size more than 100 μm [31,32]. During electrostatic separation, ASP-22 and ASP-5 powders (D50 = 21.9 μm and D50 = 4.9 μm, respectively) showed poor processability.…”

Section: Resultsmentioning

confidence: 99%

“…Dielectric barrier discharge occurs during the voltage applied to the electrodes, covered with the isolation dielectric layer. According to the publication [31], a positive example of such a principle was used to separate fine coal and fly ash. The ability of the dielectric barrier to eliminate electrical breakdown in the working area of the electrostatic separator was implemented by Mekhanobr Tekhnika Corporation in the design of triboelectrostatic separators.…”

Section: Resultsmentioning

confidence: 99%

“…According to the operation principle of separator devices [30,31], the material is fed from the feed hopper to the vibrating feeder tray providing powder supply for preliminary separation of conglomerates from adhered fine particles. From the tray of the vibrating feeder, material enters the surface of the rotating drum (collecting electrode), which is carried to the corona discharge zone.…”

Section: Methodsmentioning

confidence: 99%

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Aluminum Powder Preparation for Additive Manufacturing Using Electrostatic Classification

Shinkaryov

Cherkasova²,

Pelevin

et al. 2021

Coatings

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This work aims to study the possibility of using an electrostatic drum-type separator to prepare a powder with a narrow size distribution curve for usage in additive manufacturing. The size distributions of the uncoated commercial aluminum powders ASP-30, ASP-22, and ASP-5 were analyzed. It was shown that the powders ASP-30 and ASP-22 have similar asymmetric distributions with a SPAN of 1.480 and 1.756, respectively. ASP-5 powder, in turn, has a narrow distribution with a SPAN of 0.869. ASP-30 powder was chosen for further experiment because, traditionally, separators are used to classify large-sized materials with particle size more than 100 μm. The optimal mode of electrostatic classification was proposed for the selected powder. Various classification methods, including centrifugal and electrostatic, were compared. The powders before and after classification were studied by XRD, SEM, TEM, and TG–DSC analyses. The obtained results showed that electrostatic classification does not lead to the formation of coatings on the processed powders. Electrostatic separation effectively narrows the particle size distribution, making it a suitable and valuable method to classify initial powders for additive manufacturing.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Aluminum Powder Preparation for Additive Manufacturing Using Electrostatic Classification

Shinkaryov

Cherkasova²,

Pelevin

et al. 2021

Coatings

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show abstract

“…The purpose was to remove submicron particles with the particle size of less than 10 μm. The studies were carried out using a ZEVS electric drum separator with the dielectric barrier discharge (DBR) [7]. The advantages of DBR in electrical separation are due to the fact that it allows significantly increasing the electric VIBROENGINEERING PROCEDIA.…”

Section: Experimental Studies On a Fine Metal Powder With A Size Of 0mentioning

confidence: 99%

Vibration effects in conditioning of metal powders

Mezenin¹,

Дмитриев²,

Cherkasova³

2019

Vib. proced.

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The research results are presented for the technology to improve the quality of fine powder materials using vibration effects to produce conditioned commercial products meeting the requirements of additive manufacturing and suitable for application in powder metallurgy and mechanical engineering. The effect of vibration fluidization on the separation of fine metal powder with a particle size of less than 40 microns from submicron particles in a non-uniform electric field using a dielectric barrier discharge, which allows to determine the optimal technological parameters of separation, was studied for the first time. The effect of the operating parameters of the ELKOR-1 corona-electrostatic separator on the behavior of fine-dispersed metal powders with a particle size of less than 160 microns in a non-uniform electric field with high intensity, which allows to determine the optimal separation mode with obtaining standard technological parameters, is investigated.

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Application of particle-size analysis in various industries

Gerasimov

Eremina

Cherkasova

et al. 2021

J. Phys.: Conf. Ser.

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For various materials, rapid generation of results is always critical. Particle-size analysis of processing products using a laser-based particle-size analyzer is a valid alternative to the traditional sizing test. The article presents the results of studies conducted using Microsizer 201C equipment by the example of layered aluminosilicates and metal powders for additive manufacturing. The size analysis for these products is generally complicated by their ability to stick and agglomerate. Ultrasonic mixing does not harm the material analyzed and promotes uniform distribution of the sample during analysis. The results of granulometric analysis of kaolin ores obtained after different heat treatment are presented. The results of air-electric classification of metal powders obtained after vibration disintegration of metal chips are presented. The variety of raw materials shows a wide range of applications of this method in industry.

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Prospects for the use of dielectric barrier discharge in electrostatic separation

Cited by 4 publications

References 0 publications

Aluminum Powder Preparation for Additive Manufacturing Using Electrostatic Classification

Aluminum Powder Preparation for Additive Manufacturing Using Electrostatic Classification

Vibration effects in conditioning of metal powders

Application of particle-size analysis in various industries

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