Analysis of separation response of Kelsey centrifugal jig in processing fine coal

Singh, Ranjeet Kumar; Das, Avimanyu

doi:10.1016/j.fuproc.2013.04.005

Cited by 28 publications

(11 citation statements)

References 8 publications

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“…One of the other ways to manage energy intensity in the production process is simply to change the number and size of nozzles. Considering the fact that the pressure is created by the screw in the stand-pipe and increases in the nozzle facing back pressure [9,10], we propose to introduce the concept of "head coefficient" kH to describe the peat consolidation degree under different conditions and to use the method of geometric similarity. The head coefficient is the ratio of the flow area of a stand-pipe to those of nozzles:…”

Section: Methods Usedmentioning

confidence: 99%

Justification of Screw Press Rational Parameters and its Working Modes during Sod Peat Extraction by Milling-forming Method

Yablonev

Guseva

2019

E3S Web Conf.

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Sod peat production involves the use of screw press machines. Although the designs of such machines differ in details, they have a number of similar parameters including the highest power intensity throughout the entire production cycle. Sod peat forming conditions are investigated in order to reduce the process energy intensity without losing sod density and, therefore, strength. Laboratory experimental dispersion and moulding of peat are done with a screw press having five speeds, three interchangeable nozzles and two screws with different step of turns. The moisture of the feedstock, the effective power and capacity of the press, the specific energy of the process are determined. The findings show that the most rational operating modes of a screw press consist in the blend of screw rotation speed, nozzle diameter and step of screw turns.

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Section: Methods Usedmentioning

confidence: 99%

Justification of Screw Press Rational Parameters and its Working Modes during Sod Peat Extraction by Milling-forming Method

Yablonev

Guseva

2019

E3S Web Conf.

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“…Examples for pneumatic jigging application include removal of sulfur and ash content in coal (Boylu et al, 2014;Panda et al, 2012;Sampaio et al, 2008;Singh and Das, 2013) and separation of dry fine coal particles from non-aqueous gangue particles (Luo et al, 2008). Examples for pneumatic jigging application include removal of sulfur and ash content in coal (Boylu et al, 2014;Panda et al, 2012;Sampaio et al, 2008;Singh and Das, 2013) and separation of dry fine coal particles from non-aqueous gangue particles (Luo et al, 2008).…”

Section: Application Of Jigging Technologymentioning

confidence: 99%

“…Most of applications of jigging are for coal and other minerals processing. Examples for pneumatic jigging application include removal of sulfur and ash content in coal (Boylu et al, 2014; Panda et al, 2012; Sampaio et al, 2008; Singh and Das, 2013) and separation of dry fine coal particles from non-aqueous gangue particles (Luo et al, 2008). Fluid used in wet jig provides higher viscosity compared with air, which enables ore concentration applications (Beniuk et al, 1994; Naudé et al, 2013).…”

Section: Jiggingmentioning

confidence: 99%

The application of pneumatic jigging in the recovery of metallic fraction from shredded printed wiring boards

et al. 2015

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Waste electrical and electronic equipment (WEEE) is one of the fastest growing waste streams worldwide with volumes increasing by 40% each year. WEEE has attracted increasing concern worldwide due to its high metal content and the potential environmental threat which results from uncontrolled recycling practices. Innovative physical separation techniques for WEEE recycling are preferential compared with chemical methods because of the reduction of energy and chemical consumption as well as potential environmental threats. Pneumatic jigging is a dry separation process capable of achieving good separation of coarse material within a very narrow density range, which makes it suitable as a pretreatment process for WEEE recycling. The work presented in this paper investigates the potential application of pneumatic jigging in metal recovery from WEEE. A pilot scale pneumatic jig has been developed by University of Nottingham Ningbo to separate shredded printed wiring boards into two streams: a light fraction (mainly non-metallic fraction consisting of glass fiber, fluffs, and plastic pieces) and dense fraction (metallic fraction). The novelty of work presented in this paper is the application of a dry separation technique in WEEE recycling for metal recovery. Compared with conventional wet separation processes involved in WEEE recycling industry, dry separation has the advantage of zero secondary pollution. The results of this experimental program show pneumatic jigging to be an effective and environmental friendly technique as a pretreatment process for the recovery of the metallic fraction from shredded WEEE.

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“…Peat extraction by pneumatic harvesting machines has a number of indisputable advantages over mechanical harvesting. Among them -a reduction in the duration of the cycle and the range of equipment, the possibility of preserving the natural fibrous structure of peat, which is necessary for the production of fertilizers [1,2]. The intensification of the extraction of milled peat by pneumatic harvesters largely depends on their reliability, the correct choice of settings and the installation of the suction nozzle [3].…”

Section: Introductionmentioning

confidence: 99%

Study of the Dependence of the Air Flow Velocity on the Parameters of the Suction Nozzle Installation of the Peat Pneumatic Harvesting Machine

et al. 2021

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The parameters influencing the suction efficiency of peat pneumatic harvesters are listed. Among them are the distance from the nozzle to the underlying surface and the angle of the nozzle. Since there is very little information and recommendations on the rational values of these parameters, it was decided, using a specially designed installation, to conduct a laboratory experiment to assess the air flow velocity, depending on the distance from the nozzle, the angle of the nozzle and the height of the nozzle above the underlying surface of the deposit. The results of the experiment are presented. It is shown, that the rational angle of the nozzle at this stage of research can be considered an angle of 30±5°. In practice, it is impossible to reproduce the zero distance from the nozzle to the underlying surface; therefore, it is recommended to limit the height of 25 mm, which is equal to the maximum size of the conditioned peat crumb. It is noted, that for more accurate results, it is necessary to carry out the following series of experimental works to assess the parameters of suction of peat chips with specific physical and mechanical characteristics.

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Analysis of separation response of Kelsey centrifugal jig in processing fine coal

Cited by 28 publications

References 8 publications

Justification of Screw Press Rational Parameters and its Working Modes during Sod Peat Extraction by Milling-forming Method

Justification of Screw Press Rational Parameters and its Working Modes during Sod Peat Extraction by Milling-forming Method

The application of pneumatic jigging in the recovery of metallic fraction from shredded printed wiring boards

Study of the Dependence of the Air Flow Velocity on the Parameters of the Suction Nozzle Installation of the Peat Pneumatic Harvesting Machine

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