Flotation of lignite pretreated by sorbitan monooleate

• Autorzy: Zhang W. , Tang X.

Identyfikatory

DOI

10.5277/ppmp140227

• Języki publikacji: EN

Abstrakty

EN

In this study, sorbitan monooleate was used to pretreat lignite prior to flotation tests. First, the lignite sample and water were mixed with 0%, 0.5%, 1%, 1.5% and 2% (on the basis of the weight of the coal) of sorbitan monooleate to produce five types of flotation slurries. FTIR, XPS and SEM were used to analyze the surface properties of the lignite sample. The flotation tests were used to indicate the improvements in flotation of lignite after the sorbitan monooleate pre-treatment. FTIR and XPS results showed that there are many oxygenated functional groups in lignite such as carboxyl group and hydroxyl groups. Furthermore, SEM results showed that there are many holes on the lignite surface. These holes will be filled with water in the flotation pulp. The flotation results indicated that sorbitan monooleate can improve the lignite flotation at low concentrations of sorbitan monooleate. However, the flotation behavior of lignite deteriorated at higher concentrations of sorbitan monooleate.

Słowa kluczowe

EN

sorbitan monooleate; flotation; lignite; FTIR; XPS; SEM

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2014
• Tom: Vol. 50, iss. 2
• Strony: 759--766
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Zhang W.

• Low Carbon Energy Institute, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China

autor

Tang X.

• Low Carbon Energy Institute, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China

Bibliografia

• 1. ASTON J.R., DEACON M.J., FURLONG D.N., HELY T.W., LAU A.C.M., 1981, The chemistry of non-ionic surfactants, preparation processes, Proceedings of the first Australian coal preparation congress, Newcastle, Australia, 358–378.
• 2. ATESOK G., CELIK M.S., 2000, A new flotation scheme for a difficult-to-float coal using pitch additive in dry grinding, Fuel, 79(12), 1509-1513.
• 3. BURKIN A.R., BRAMLEY J.V., 1963, Flotation with insoluble reagents II, effect of surface active reagents on the spreading of oil at coal–water interface, Journal of Applied Chemistry, 13, 417–422.
• 4. CELIK M.S., SEYHAN K., 1995, Effect of heat treatment on the flotation of Turkish lignites, International Journal of Coal Preparation and Utilization, 16, 65–79.
• 5. CHANDER S., MOHAL B., APLAN F.F., 1987, Wetting behavior of coal in the presence of some non-ionic surfactants, Journal of Applied Chemistry, 13, 205–216.
• 6. CINAR M., 2009, Floatability and desulfurization of a low-rank (Turkish) coal by low-temperature heat treatment, Fuel Processing Technology, 90(10), 1300–1304.
• 7. DESIMONI E., CASELLA G.I., MORONE A., SALVI A.M. 1990, XPS determination of oxygen-containing functional groups on carbon-fibre surfaces and the cleaning of these surfaces, Surface and Interface Analysis,15, 627–634.
• 8. DESIMONI E., CASELLA G.I., SALVI A.M. 1992, XPS/XAES study of carbon fibres during thermal annealing under UHV conditions, Carbon, 30, 521–526.
• 9. FIEDLER R., BENDLER D. 1992, ESCA investigations on Schleenhain lignite lithotypes and the hydrogenation residues, Fuel, 71, 381–388.
• 10. JENA M.S., BISWAL S.K., RUDRAMUNIYAPPA M.V., 2008, Study on flotation characteristics of oxidised Indian high ash sub-bituminous coal, International Journal of Mineral Processing, 87, 42–50.
• 11. JIA R., HARRIS G.H., FUERSTENAU D.W., 2000, An improved class of universal collectors for the flotation of oxidized and for low-rank coal, International Journal of Mineral Processing, 58, 99–118.
• 12. LI Y., ZHAO W., XU S., XIA, W., 2013, Changes of size, ash and density of coal particles on the column axis of a liquid-solid fluidized bed, Powder Technology, 245: 251–254.
• 13. MOXTON N.T., KEAST-JONES B., NICOL S.K., 1987, Insoluble oils in coal flotation: the effects of surface spreading and pore penetration, International Journal of Mineral Processing, 21, 261–274.
• 14. OZBAYOGLU G., DEPCI T., ATAMAN N., 2009, Effect of Microwave Radiation on Coal Flotation, Energy Sources Part A-Recovery Utilization And Environmental Effects, 31(6), 492–499.
• 15. SOKOLOVIC J.M., STANOJLOVIC R.D., MARKOVIC Z.S., 2012, The Effects of Pretreatment on the Flotation Kinetics of Waste Coal. International Journal of Coal Preparation and Utilization, 32(3), 130–142.
• 16. SOKOLOVIC J.M., STANOJLOVIC R.D., MARKOVIC Z.S. 2012, Activation of oxidized surface of anthracite waste coal by attrition. Physicochemical Problems of Mineral Processing, 48(1), 5–18.
• 17. SAHBAZ O., 2013, Determining optimal conditions for lignite flotation by design of experiments and the halbich upgrading curve, Physicochemical Problems of Mineral Processing, 49(2), 535–546.
• 18. SUN W., OUYANG K., ZHANG L., HUA Y., CHEN C., 2010, Preparation of hydrolyzate of hogwash oil (HHO) and its application in separating diaspore from kaolinite, Minerals Engineering, 23, 670–675.
• 19. XIA W., YANG J., ZHAO Y., ZHU B., WANG Y., 2012, Improving floatability of Taixi anthracite coal of mild oxidation by grinding, Physicochemical Problems of Mineral Processing 48 (2), 393–401.
• 20. XIA W., YANG J., LIANG C., 2013, A short review of improvement in flotation of low rank/oxidized coals by pretreatments, Powder Technology, 237, 1–8.
• 21. XIA W., YANG J., 2013a, Effect of pre-wetting time on oxidized coal flotation, Powder Technology, 250, 63–66.
• 22. XIA W., YANG J., 2013b, Reverse flotation of Taixi oxidized coal. Energy & Fuels, 27(12), 7324–7329.
• 23. YU Q., YE Y., MILLER J.D., 1990, A study of surfactant/oil emulsion for fine coal flotation, Advances in Fine Particles Processing, Springer, 344–355.
• 24. YUH S.J., WOLT E.E., 1983, FTIR studies of potassium catalyst treated gasified coal chars and carbon, Fuel, 62, 252–255.
• 25. ZHOU Z., LI X., LIANG J., LIU J., ZHOU J., CEN K., 2011, Surface Coating Improves Coal–Water Slurry Formation of Shangwan Coal, Energy & Fuels, 25(8), 3590–3597.