A procedure of Arrhenius activation energy determination for salt flotation of particles in the vicinity of one molar salt aqueous solutions

• Autorzy: Ratajczak Tomasz , Kurkiewicz Szymon , Drzymala Jan

Identyfikatory

DOI

10.37190/ppmp/120924

• Języki publikacji: EN

Abstrakty

EN

A modified Arrhenius equation, in which thermal energy is replaced with chemical (Gibbs) potential, and a special calculation procedure were used to evaluate the flotation activation energy for salt solutions in the one molar range of concentrations. The proposed formula overcomes the difficulties of calculating the salt flotation activation energy caused by mathematical problems of finding 1/(ln(c/c _o)) for the standard salt concentration c _o=1 M (1 kmol/m₃ and when the applied salt concentration c is in the vicinity of 1 M. The salt flotation activation energy was calculated for flotation of copper-bearing carbonaceous shale in the 0.25, 0.50, 1.00 and 2.00 M NaCl solutions performed in a laboratory machine as equal to 1.9 RT for standard salt solution equal to 1 M.

Słowa kluczowe

EN

activation energy; salt flotation; Arrhenius equation; Gibbs potential

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2020
• Tom: Vol. 56, iss. 6
• Strony: 1--5
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr., wz.

Twórcy

autor

Ratajczak Tomasz

• Wroclaw University of Science and Technology, Faculty of Geoengineering, Mining and Geology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland

autor

Kurkiewicz Szymon

• Wroclaw University of Science and Technology, Faculty of Geoengineering, Mining and Geology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland

autor

Drzymala Jan

• Wroclaw University of Science and Technology, Faculty of Geoengineering, Mining and Geology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland

Bibliografia

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• DRZYMALA, J., 2018. Arrheniusan activation energy of separation for different parameters regulating the process, Physicochemical Problems of Mineral Processing, 54(4), 1152-1158.
• DRZYMALA, J., KARWOWSKI, P., BOROWSKI, K., PAZIK, P., KOWALCZUK, P.B., 2017. Proba klasyfikacji łupkow Legnicko-Głogowskiego Okregu Miedziowego na podstawie zawartosci weglanow, mineralow ilastych, wegla organicznego oraz miedzi, in: Lupek miedzionosny III, Kowalczuk P.B., Drzymała J. (red.), WGGG PWr, Wrocław, 2017, doi: 10.5277/lupek1702.
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• KURKIEWICZ, S., 2017. Flotometric hydrophobicity of copper-bearing shale in the presence of salt. MS thesis, T. Ratajczak supervisor, Wroclaw University of Science and Technology (in Polish).
• KURKIEWICZ, S., RATAJCZAK, T., 2017. Flotometryczna hydrofobowosc lupkow miedzionosnych w obecnosci NaCl, in: Lupek miedzionosny III, Kowalczuk P.B., Drzymala J. (Eds), WGGG PWr, Wroclaw, 118-128, http://www.minproc. pwr.wroc.pl/lupek/lupek1711.pdf.
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• OZDEMIR, O., 2013. Specific ion effect of chloride salts on collectorless flotation of coal, Physicochem. Probl. Miner. Process. 49(2), 511-524.
• PAULSON, O., PUGH, R.J., 1996, Flotation of inherently hydrophobic particles in aqueous solutions of inorganic electrolytes, Langmuir, 12, 4808-4813.
• PUGH, R.J., WEISSENBORN, P., PAULSON, O., 1997. Flotation in inorganic electrolytes: the relationship between recovery of hydrophobic particles, surface tension, bubble coalescence and gas solubility. Int. J. Miner. Process. 51(1-4), 125-138.
• RATAJCZAK, T., DRZYMALA, J., 2003. Salt flotation, Oficyna Wydawnicza Politechniki Wroclawskiej, Wroclaw, Poland (in Polish).
• ZHANG, H., 2015. Effect of electrolyte addition on flotation response of coal, Physicochem. Probl. Miner. Process. 51(1), 257-267.
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Uwagi

The work was financed by the Polish Statutory Research Grant 049u/0098/19.