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| Description
| - The intensification of the mining process is responsible for as much as 45 % of waste rock and tailings getting to the coal preparation plant along with the raw coal. From the chemical point of view, it is material predominantly constituting of silicates (siltstone, conglomerates, kaolins or montmorillonites). The current on-site experience shows that the rising quantities of fine-grained impurities are responsible for protracting the sedimentation processes and thus prolonging the separation of fine-grained fractions. In the past, dewatering of flotation tailings was based on the principle of sedimentation. However, this is becoming very time-consuming due to the colloid character of the suspended particles as the materials get repulsed, thus influencing the sedimentation process. The experiments in this work focus on the verification of the mutual interaction between coal slurries and chemical agents. The aim is to describe the surface properties of tailings particles during their interaction with suitable agents, namely %22Flokor 1.2A%22 and %22PAX 18%22, applied for dewatering purposes. At lower doses of Flokor 1,2A or Pax 18 the conditions in the medium got stabilized and the pH did not fall below 6, using the doses of up to 0.4ml.l-1 and up to 0.08ml.l-1 respectively. The value of 0.05ml.l-1 is considered the optimal dose for the agents. The zeta potential shows that the surface charge gets compensated already at low concentrations of both aluminium chloride-hydroxide and polyaluminium chloride. The isoelectric point was reached at the dose interval ranging from 0.02ml.l-1 – 0.03ml.l-1. The results were obtained at tailings suspension densities of 10 and 50g.l-1.
- The intensification of the mining process is responsible for as much as 45 % of waste rock and tailings getting to the coal preparation plant along with the raw coal. From the chemical point of view, it is material predominantly constituting of silicates (siltstone, conglomerates, kaolins or montmorillonites). The current on-site experience shows that the rising quantities of fine-grained impurities are responsible for protracting the sedimentation processes and thus prolonging the separation of fine-grained fractions. In the past, dewatering of flotation tailings was based on the principle of sedimentation. However, this is becoming very time-consuming due to the colloid character of the suspended particles as the materials get repulsed, thus influencing the sedimentation process. The experiments in this work focus on the verification of the mutual interaction between coal slurries and chemical agents. The aim is to describe the surface properties of tailings particles during their interaction with suitable agents, namely %22Flokor 1.2A%22 and %22PAX 18%22, applied for dewatering purposes. At lower doses of Flokor 1,2A or Pax 18 the conditions in the medium got stabilized and the pH did not fall below 6, using the doses of up to 0.4ml.l-1 and up to 0.08ml.l-1 respectively. The value of 0.05ml.l-1 is considered the optimal dose for the agents. The zeta potential shows that the surface charge gets compensated already at low concentrations of both aluminium chloride-hydroxide and polyaluminium chloride. The isoelectric point was reached at the dose interval ranging from 0.02ml.l-1 – 0.03ml.l-1. The results were obtained at tailings suspension densities of 10 and 50g.l-1. (en)
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| Title
| - The Study of the Interaction Between Flotation Tailings and Flocculants in Separation Process of Coal
- The Study of the Interaction Between Flotation Tailings and Flocculants in Separation Process of Coal (en)
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| skos:prefLabel
| - The Study of the Interaction Between Flotation Tailings and Flocculants in Separation Process of Coal
- The Study of the Interaction Between Flotation Tailings and Flocculants in Separation Process of Coal (en)
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| skos:notation
| - RIV/61989100:27350/14:86090153!RIV15-MSM-27350___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27350/14:86090153
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - dewatering, zeta-potential, silicates, flocculation, sedimentation (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Thomas, Jan
- Malíková, Petra
- Vidlář, Jiří
- Chromíková, Jitka
- Matúšková, Veronika
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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