Micro-FTIR analysis to study the change in surface chemistry after addition of collectors and their effect on coal hydrophobicity

• Autorzy: Wang W. , Kumar A. , Holuszko M. E. , Mastalerz M.

Identyfikatory

DOI

10.5277/ppmp18188

• Języki publikacji: EN

Abstrakty

EN

In this study, the micro-FTIR analysis was used to investigate in-situ surface properties of coal, and was directly correlated to coal hydrophobicity, as measured by the contact angle before and after the addition of collectors, to understand their suitability for flotation. Three different collectors, diesel, pine needle oil and dodecyl trimethyl ammonium bromide (DTAB) were tested. The micro-FTIR technique provided a semi-quantitative analysis of functional groups present on the coal surface exactly where the contact angle was measured and provided a visualization of collector adsorption on specific areas of coal and associated changes in coal surface properties. This analysis could lead to a smarter way of using process design in terms of reagent selection for coal flotation to obtain a product of desired petrographic composition, which would especially be useful for coking coals. This study presents a work in progress for developing a procedure for a quick pre-selection of collectors for coal flotation based on coal surface properties.

Słowa kluczowe

EN

hydrophobicity; collectors; micro-FTIR

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2018
• Tom: Vol. 54, iss. 4
• Strony: 1292--1302
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Wang W.

• China University of Mining and Technology

autor

Kumar A.

• University of British Columbia

autor

Holuszko M. E.

• University of British Columbia

autor

Mastalerz M.

• Indiana University

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).