Application of dense-medium in an enhanced gravity separator for fine coal cleaning

Honaker, R.Q.; Singh, Nirdesh; Govindarajan, Bharath

doi:10.1016/s0892-6875(00)00023-6

Cited by 69 publications

(22 citation statements)

References 2 publications

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“…Indeed, it is the environmentally significant question of beneficiation of dredged sediments that triggered this research about modeling and analysis of the separation performance of the UF Falcon concentrator. With our understanding of the physics of this concentrator, we are currently looking into applying this separator to a number of other areas of industrial significance, such as the beneficiation of coal fines, which has already been receiving attention [16][17][18][19] in the literature.…”

Section: Discussionmentioning

confidence: 99%

Experimental validation of a fluid dynamics based model of the UF Falcon concentrator in the ultrafine range

Kroll-Rabotin

Bourgeois

Climent

2012

Separation and Purification Technology

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Experimental validation of a fluid dynamics based model of the UF Falcon concentrator in the ultrafine range . (2012) Separation and Purification Technology, vol. 92. pp. 129-135. ISSN 1383-5866 Open Archive Toulouse Archive Ouverte (OATAO)OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible.Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@inp-toulouse.fr The process of separating ultrafine particles, say below 80 lm, on the basis of density is a true technical challenge. Indeed, the separation process itself becomes very much size dependent with such fine particles, so that large enough density differentials are necessary for offsetting the strong particle size effect. Our study is concerned with understanding the limitations of the UF Falcon concentrator, an enhanced gravity separator specifically designed for treating slurries with ultrafines. To this end, based on a number of hypotheses, we have already derived and published a theoretical model of the UF Falcon concentrator for treating dilute suspensions. This paper presents the validation and calibration of this model, based on experimental measurements carried out under controlled conditions using a laboratory scale concentrator. By comparing measured and predicted separation results for particles with known size distribution and density, the work validates the key model hypotheses, thereby confirming our understanding of the physics of the separation process. Moreover, by changing operating conditions in a systematic manner, the work is able to calibrate the model so that it can be used to make quantitative prediction of the UF Falcons performance.

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Section: Discussionmentioning

confidence: 99%

Experimental validation of a fluid dynamics based model of the UF Falcon concentrator in the ultrafine range

Kroll-Rabotin

Bourgeois

Climent

2012

Separation and Purification Technology

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“…Rao et al (1986) developed a model for dense medium cyclones treating coals to predict the yield and ash content of the clean coal from the dense-medium cyclone under different operating and design conditions. Honaker et al (2000) studied the application of dense medium in an enhanced gravity separator for fine coal cleaning. The results indicated that the use of dense medium resulted in 8 wt% increase in mass yield compared to the use of water only for the treatment of fine coal.…”

Section: Introductionmentioning

confidence: 99%

Performance characteristics of pilot plant dense media hydrocyclone for beneficiation of coal and 3-D CFD simulation

Suresh

Kumar

Sripriya

et al. 2010

Chemical Engineering Science

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“…The application of high-pressure feed injection into the dense-medium cyclones to provide an elevated centrifugal force has been found to allow efficient separation performance for the treatment of fine coal (i.e. o 1000 mm) [34]. Results showed that the process reduced the ash content of a difficult-to-clean coal from 29% to nearly 7%.…”

Section: Gravity Separation Techniquesmentioning

confidence: 99%

Demineralization of low grade coal – A review

Meshram

Purohit

Sinha

et al. 2015

Renewable and Sustainable Energy Reviews

153

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Application of dense-medium in an enhanced gravity separator for fine coal cleaning

Cited by 69 publications

References 2 publications

Experimental validation of a fluid dynamics based model of the UF Falcon concentrator in the ultrafine range

Experimental validation of a fluid dynamics based model of the UF Falcon concentrator in the ultrafine range

Performance characteristics of pilot plant dense media hydrocyclone for beneficiation of coal and 3-D CFD simulation

Demineralization of low grade coal – A review

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