Gravity and electrostatic separation of unburned coal from a selected fly ash

• Autorzy: Wierzchowski Krzysztof , Klupa Agnieszka , Białecka Barbara , Całus Moszko Joanna

Identyfikatory

DOI

10.46873/2300-3960.1372

• Języki publikacji: EN

Abstrakty

EN

Unburned coal grains make it difficult to use fly ash economically, which causes energy losses in the fuel. The article presents the possibilities of separating unburned coal from selected fly ash. In order to assess the possibility of separation of unburned carbon, the analysis of grain density and ash composition was used. Unburned coal was separated by four methods – one wet gravity and three dry methods. It has been found that despite very fine ash grains, the quality and quantity of separation products are significantly dependent on the separation method used and the separated grains’ qualitative characteristics. The analysis of the coal grains under an electron microscope has revealed that they contain mineral inclusions. Their presence enables selective separation of carbon without first grinding the middling grains. The most advantageous results of the separation of unburned coal were obtained by the electrostatic separation method. Separated coal can be used in high-value carbon applications.

Słowa kluczowe

EN

fly ash; unburned coal; gravity separation; electrostatic separation; mineral inclusions

PL

popiół lotny; niespalony węgiel; separacja grawitacyjna; separacja elektrostatyczna; minerały domieszkowe

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2023
• Tom: Vol. 22, iss. 1
• Strony: 33--40
• Opis fizyczny: Bibliogr. 51 poz.

Twórcy

autor

Wierzchowski Krzysztof

• Central Mining Institute, Department of Environmental Monitoring, Poland

• https://orcid.org/0000-0003-3642-0018

autor

Klupa Agnieszka

• Central Mining Institute, Department of Environmental Monitoring, Poland

• https://orcid.org/0000-0002-6703-1085

autor

Białecka Barbara

• Central Mining Institute, Department of Environmental Monitoring, Poland

• https://orcid.org/0000-0002-6002-5475

autor

Całus Moszko Joanna

• Central Mining Institute, Department of Environmental Monitoring, Poland

• https://orcid.org/0000-0002-5392-7657

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).