Evaluation of the possibility of using granulated carbonated volatile fly ash from fluidized beds (G-CVFA) in underground mining techniques

• Autorzy: Proksa Jadwiga , Łączny Marian Jacek , Bzowski Zbigniew

Identyfikatory

DOI

10.24425/ams.2020.134144

• Języki publikacji: EN

Abstrakty

EN

The application of fluidized fly ash in underground mining excavations is limited due to its significant content of free calcium and calcium sulfate. In order to increase the amount of utilized fly ash from fluidized beds, it should be converted to a product with properties that meet the requirements for mining applications. This research presents the results of an attempt to adapt fluidized fly ashes for use in underground mining techniques, by means of carbonation and granulation. Carbonation was performed with the use of technical carbon dioxide and resulted in the reduction of free calcium content to a value below 1%. Granulation on the other hand, resulted in obtaining a product with good physical and mechanical parameters. The performed mineralogical and chemical studies indicate that trace amounts of "binding" phases, such as basanite and/or gypsum are present in the carbonized ash. The addition of water, during the granulation of carbonized fluidized fly ash, resulted in changes in the mineral phases leading to the formation of ettringite and gypsum as well as the recrystallization of the amorphous substance. It was confirmed that the carbonization and granulation of flying fluidized ashes positively affects the possibility of using these ashes in underground mining excavations.

Słowa kluczowe

EN

fluidized fly ash; underground mining techniques; carbonation; granulation

PL

fluidalny popiół lotny; karbonizacja; technika górnicza

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2020
• Tom: Vol. 65, no. 4
• Strony: 737--750
• Opis fizyczny: Bibliogr. 26 poz., fot., tab., wykr.

Twórcy

autor

Proksa Jadwiga

• Central Mining Institute, 1 Gwarków Sq., 40-166 Katowice, Poland

autor

Łączny Marian Jacek

• Central Mining Institute, 1 Gwarków Sq., 40-166 Katowice, Poland

autor

Bzowski Zbigniew

• Central Mining Institute, 1 Gwarków Sq., 40-166 Katowice, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)