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Coke and Chemistry

, Volume 61, Issue 9, pp 319–323 | Cite as

Flotational Enrichment of Low-Quality and Oxidized Coal Using Spent Motor Oil

  • Yu. F. PatrakovEmail author
  • S. A. SemenovaEmail author
  • M. S. KleinEmail author
  • B. AvidEmail author
COAL
  • 7 Downloads

Abstract

The flotation of low-quality Russian and Mongolian coal by means of spent motor oil is investigated. Ozonization is used to improve the flotational properties of the spent oil. The optimal ozonization depth of oil used to enrich coal of poor metamorphic development is 5–6 g/kg. Ozonization increases the oil’s content of oxygen-bearing heteropolar compounds, which determine its flotation properties. In addition, the viscosity declines. The use of ozonized spent oil improves the flotation of gas coal by 24%. Flotation of naturally oxidized gas coal by spent oil, before and after ozonization, is poor and requires large quantities of reagents.

Keywords:

coal oxidized coal functional groups flotation spent motor oil ozonization 

Notes

ACKNOWLEDGMENTS

We thank O. S. Efimova, R. P. Kolmykov, V. Yu. Malysheva, N.A. Grabova, and Yu.A. Kharlampenkova (Federal Research Center of Coal and Coal Chemistry) and N.S. Grushina (the Gorbachev University) for assistance in the experiments and the physicochemical analysis.

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Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  1. 1.Federal Research Center of Coal and Coal Chemistry, Coal Institute, Siberian Branch, Russian Academy of SciencesKemerovoRussia
  2. 2.Gorbachev Kuznetsk Basin State Technical UniversityKemerovoRussia
  3. 3.Mongolian Academy of SciencesUlaanbaatarMongolia

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