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Application of pyrolysis residue from waste materials in black coal flotation

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Fečko P., Kašpárková A., Pertile E., Kříž V., Tora B., Jarosiński A., Janáková I.
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EN
The paper deals with the verification of the floatability of pyrolytic oils, which were obtained through the pyrolysis of waste, namely mixed plastics, tyres and waste rubber in combination with black coal from Lazy Mine, and classical collector Montanol 551 in black coal flotation. Black coal from ČSA OKD, a.s. coal preparation plant was used for flotation tests. The results imply that it is possible to produce collectors from waste materials which may be applied in the flotation of black coal. Next, the paper focused on the identification of a suitable combination of pyrolytic oils and Montanol 551 in order to reach ash content in the concentrate below 10%.
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Mixing of Biomass and Coal in a Static Mixer as an Example of Technological Solutions Involving Implementation of Renewable Energy Sources

86%
Królczyk J. B., Rezwiakow A., Tukiendorf M.
Ecological Chemistry and Engineering S
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2014
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vol. 21
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issue 4
685-696
EN
The purpose of this article is to demonstrate possibilities of mixing coal with biomass using static mixers. The paper present simple and inexpensive methods for producing fuel mixes for heat-generating plants equipped with stoker-fired boilers of power ranging from 3 up to 50 MW. Static mixer proposed in this article may constitute an alternative for currently used solutions in production facility. Based on statistical analysis, the article demonstrates that five mixing elements of the mixer is optimal number to ensure best biomass (chips and pellets) concentration distribution in a mixture with fine hard coal.
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