New Flotation Reagents on the Base of Tetrahydropyran for the Processing of High-Ash Coals

  • T. Ketegenov Science and Technology park, Al-Farabi Kazakh National University, 71 Al-Farabi ave., Almaty, Kazakhstan
  • S. Kalugin New Chemical Technologies and Materials Institute, Al-Farabi Kazakh National University, 96А Tole bi str., Almaty, Kazakhstan
  • Zh. Asylkhanov New Chemical Technologies and Materials Institute, Al-Farabi Kazakh National University, 96А Tole bi str., Almaty, Kazakhstan
  • K. Kamunur Science and Technology park, Al-Farabi Kazakh National University, 71 Al-Farabi ave., Almaty, Kazakhstan
  • A. Karagulanova Science and Technology park, Al-Farabi Kazakh National University, 71 Al-Farabi ave., Almaty, Kazakhstan
Keywords: coal, synthesis, flotation, 3-amyltetrahydropyran-4-ol, acetate, concentrate

Abstract

The given paper presents the study results of flotation benefication of high-ash coals with new flotation reagent on the base of acetate of 3-amyltetrahydro-pyran- 4-ol which incorporates apolar and heteropolar groups. The use of a picric acid as a catalyst of hydroxymethylation reaction instead of sulfuric acid made it possible to halve the synthesis time and increase the yield of the target product. The structure of the obtained heterocyclic compound was identified by elemental analysis, infrared spectroscopy (IR) and nuclear magnetic resonance spectroscopy (NMR). Waste of high-ash coal production from the Saryadyr deposit (Kazakhstan) was selected as an object of flotation. It is found that the benefication process efficiency depends on the fineness of the coal material and increases with the transition from -0.8 + 0.4 mm to -0.2 + 0.08 mm. Comparison of the efficiency of coal flotation using pine oil as a traditional collector and 3-amyltetrahydropyran-4-ol acetate showed an increase in the degree of extraction of coal mass into a concentrate and a simultaneous decrease in its ash content when using a synthesized heterocyclic compound. It is concluded that 3-amyltetrahydropyran-4-ol acetate shows both a modifying effect and a foaming ability.

References

(1). M. Dorraj, K. Morgan, Global Impact of Unconventional Energy Resources. Lanham and New York: Lexington Books, USA., 2018, p. 328.

(2). I. Cronshaw, Aust. J. Agr. Resour. Ec. 59 (2015) 571–585. Crossref

(3). M.C. Thurber, R.K. Morse, The Global Coal Market, Cambridge University Press, U.K. 2015 p.702. Crossref

(4). S. Kumari, T.G. Charan, U.S. Chattopadhyay, J.K. Pandey, G. Udayabhanu, M.K. Saini, A.K. Bandopadhyay, Mineralogical characterization of raw and beneficiated fractions of an IB valley coal for beneficiation characteristics, quality and behavior on combustion. 26th International Mineral Processing Congress: Innovative Processing for Sustainable Growth – Conference Proceedings. 2012, p. 336–343.

(5). T. Kovalev, V.P. Malina, V.I. Rudyka, M.A. Soloviov, Coke Chem. 61 (2018) 235–245. Crossref

(6). T. Gouri Charan, S. Chaudhuri, S. C. Majhi, P. S. Prasad, P. K. Singh, Journal of Mines, Metals and Fuels, 66 (2018) 370–374.

(7). V.A Belousov, International Journal of Applied and Basic Research [Mezhdunarodnyj zhurnal prikladnyh i fundamental'nyh issledovanij] 4 (2014) 15–17 (in Russian).

(8). I.K. Gainullin, Coal [Ugol'] 5 (2013) 105–106 (in Russian).

(9). Interstate Standard "Solid Mineral Fuel: Ash Determination Methods" #11022-95, © Standartinform, Moscow, 2006.

(10). S. Kalugin, Reports of the National Academy Science Republic of Kazakhstan [Doklady Nacional'noj Akademii Nauk Respubliki Kazahstan] 3 (2008) 55–61 (in Russian).

(11). N. Yelibayeva, K. Bazhykova, A. Umbetova, Journal of Chemical Technology and Metallurgy 3 (2019) 488‒495.

(12). A. Millan, J.R. Smith, J.L.-Y. Chen, V.K. Aggarwal, Angew. Chem. Int. Edit. 55 (2016) 2498‒2502. Crossref

(13). T. Katamura, T. Shimizu, Y. Mutoh, S. Saito, Org. Lett. 19 (2017) 266‒269. Crossref

(14). R.J. Abraham, M. Mobli, Modelling 1H NMR Spectra of Organic Compounds. Theory, Applications and NMR Prediction Software, Wiley, 2008. Crossref

(15). M.D. Mistry, A Handbook of Spectroscopic Data Chemistry, B.K.M. ScienceCollege, Volsad, 2009, p.104.

(16). V.N. Petukhov, D.A. Kubak, V.V. Subbotin, Coke Chem. 58 (2015) 101‒108. Crossref
Published
2019-10-28
How to Cite
[1]
T. Ketegenov, S. Kalugin, Z. Asylkhanov, K. Kamunur, and A. Karagulanova, “New Flotation Reagents on the Base of Tetrahydropyran for the Processing of High-Ash Coals”, Eurasian Chem. Tech. J., vol. 21, no. 3, pp. 277-281, Oct. 2019.
Section
Articles