Particle size grouping method as a control system of efficiency flotation process on the example of coal
Agglomeration of coal particles during flotation can be analysed with the Particle Size Grouping (PSG) method. Numerous experiments were carried out to theoretically explain the effect of carbon particles agglomeration, but the result still remains incomplete. In this paper the PSG method was used t...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade, Technical Faculty, Bor
2021-01-01
|
| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392000033K.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832569401694486528 |
|---|---|
| author | Kalisz D. Kuglin K. Młynarczykowska A. |
| author_facet | Kalisz D. Kuglin K. Młynarczykowska A. |
| author_sort | Kalisz D. |
| collection | DOAJ |
| description | Agglomeration of coal particles during flotation can be analysed with the Particle Size Grouping (PSG) method. Numerous experiments were carried out to theoretically explain the effect of carbon particles agglomeration, but the result still remains incomplete. In this paper the PSG method was used to analyse agglomeration groups of carbon particles of initial size 100-400 μm, maintaining the total particle volume. The size of particles population with definite radius and density was determined for 1 Mg coal. The influence of density and size of particles with given mixing energies and parameter α on agglomeration was analysed. It was stated that the size of the particles had an effect on their agglomeration. In the analysed cases the dimensionless parameter of collision turbulence t* needed for particles agglomeration in particular size groups was importantly shorter for particles of initial size 300 and 400 μm. The change of the mixing energy did not have influence on the agglomeration of coal particles. The theoretical analyses based on computer calculations were supplemented by the analyses of the coal flotation process on an aqueous model. Experiments lied in introducing a foaming agent in the form of aqueous solution of hexanol which, without changing pH of the pulp, lowered surface tension value, and consequently increased the dispersion of air in the suspension. The experimental results were presented in the form of flotation kinetics curves. Fine particles 100-200μm. turned out to be best for flotation, unlike coarse 400-500 μm. |
| format | Article |
| id | doaj-art-8738a8a4914d437fa413f30c5a27e25a |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-8738a8a4914d437fa413f30c5a27e25a2025-02-02T21:41:38ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752021-01-0157111210.2298/JMMB200317033K1450-53392000033KParticle size grouping method as a control system of efficiency flotation process on the example of coalKalisz D.0Kuglin K.1Młynarczykowska A.2AGH-UST, Faculty of Foundry Engineering, Kraków, PolandAGH-UST, Faculty of Foundry Engineering, Kraków, PolandAGH-UST, Faculty of Mining and Geoengineering, Kraków, PolandAgglomeration of coal particles during flotation can be analysed with the Particle Size Grouping (PSG) method. Numerous experiments were carried out to theoretically explain the effect of carbon particles agglomeration, but the result still remains incomplete. In this paper the PSG method was used to analyse agglomeration groups of carbon particles of initial size 100-400 μm, maintaining the total particle volume. The size of particles population with definite radius and density was determined for 1 Mg coal. The influence of density and size of particles with given mixing energies and parameter α on agglomeration was analysed. It was stated that the size of the particles had an effect on their agglomeration. In the analysed cases the dimensionless parameter of collision turbulence t* needed for particles agglomeration in particular size groups was importantly shorter for particles of initial size 300 and 400 μm. The change of the mixing energy did not have influence on the agglomeration of coal particles. The theoretical analyses based on computer calculations were supplemented by the analyses of the coal flotation process on an aqueous model. Experiments lied in introducing a foaming agent in the form of aqueous solution of hexanol which, without changing pH of the pulp, lowered surface tension value, and consequently increased the dispersion of air in the suspension. The experimental results were presented in the form of flotation kinetics curves. Fine particles 100-200μm. turned out to be best for flotation, unlike coarse 400-500 μm.http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392000033K.pdfcoal flotationpsg methodagglomerationmodelling |
| spellingShingle | Kalisz D. Kuglin K. Młynarczykowska A. Particle size grouping method as a control system of efficiency flotation process on the example of coal Journal of Mining and Metallurgy. Section B: Metallurgy coal flotation psg method agglomeration modelling |
| title | Particle size grouping method as a control system of efficiency flotation process on the example of coal |
| title_full | Particle size grouping method as a control system of efficiency flotation process on the example of coal |
| title_fullStr | Particle size grouping method as a control system of efficiency flotation process on the example of coal |
| title_full_unstemmed | Particle size grouping method as a control system of efficiency flotation process on the example of coal |
| title_short | Particle size grouping method as a control system of efficiency flotation process on the example of coal |
| title_sort | particle size grouping method as a control system of efficiency flotation process on the example of coal |
| topic | coal flotation psg method agglomeration modelling |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392000033K.pdf |
| work_keys_str_mv | AT kaliszd particlesizegroupingmethodasacontrolsystemofefficiencyflotationprocessontheexampleofcoal AT kuglink particlesizegroupingmethodasacontrolsystemofefficiencyflotationprocessontheexampleofcoal AT młynarczykowskaa particlesizegroupingmethodasacontrolsystemofefficiencyflotationprocessontheexampleofcoal |