Skip to main content
SpringerLink
Log in

Influence of Gas Microbubbles on the Wettability of Coal Surfaces

  • COAL
  • Published:
Coke and Chemistry Aims and scope Submit manuscript

Abstract

Using low-ash OS coal as a model, a method is developed for creating a hydrophobic coal surface by means of microbubbles in a gas–liquid suspension. Air microbubbles are generated by decompression. The influence of the pressure in the gas saturation of water on the size and stability of the microbubbles is established. It is shown that, in the presence of microbubbles, a hydrophobic air layer is formed at the coal surface. That provides the basis for the attachment of flotational bubbles.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.

Similar content being viewed by others

REFERENCES

  1. Etchepare, R., Oliveira, H., Nicknig, M., Azevedo, A., and Rubio, J., Nanobubbles: generation using a multiphase pump, properties and features in flotation, Miner. Eng., 2017, vol. 112, pp. 19–26.

    Article  CAS  Google Scholar 

  2. Yoon, R.H. and Lutirell, G.H., The effect of bubble size on fine particle flotation, Miner. Process. Extr. Metall. Rev., 1989, vol. 5, pp. 101–122.

    Article  Google Scholar 

  3. Tao, D.E., Role of bubble size in flotation of coarse and fine particles—A review, Sep. Sci. Technol., 2004, vol. 39, no. 4, pp. 741–760.

    Article  CAS  Google Scholar 

  4. Liu, J., CN Patent 2227985Y, 1996.

  5. Li, B., Tao, D., Ou, Z., and Liu, J., Cyclo-microbubble column flotation of fine coal, Sep. Sci. Technol., 2003, vol. 38, no. 5, pp. 1125–1140.

    Article  CAS  Google Scholar 

  6. Abramov, A.A., Sobranie sochinenii. Tom 4. Flotatsionnye metody obogashcheniya (Collection of Research Works, Vol. 4: Flotation Washing), Moscow: Gornaya Kniga, 2017.

  7. Knapp, R.T., Daily, J.W., and Hammitt, F.G., Cavitation, New York: McGraw Hill, 1970.

    Google Scholar 

  8. Klassen, V.I., Flotatsiya uglei (Coal Floatation), Moscow: Gosgortekhizdat, 1963.

  9. Laskowski, J.S., Coal Flotation and Fine Coal Utilization, Amsterdam: Elsevier, 2001.

    Google Scholar 

  10. Zimon, A.D., Adgeziya zhidkosti i smachivanie (Adhesion of Liquid and Wetting), Moscow: Khimiya, 1974.

  11. Atlas verkhnepaleozoiskikh uglei Kuznetskogo basseina (Atlas of the Upper Paleozoic Coals of the Kuznetsk Basin), Zvonarev, I.N., Ed., Novosibirsk: Nauka, 1966.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Coal, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia

    Yu. F. Patrakov, S. A. Semenova & T. A. Papina

Authors
  1. Yu. F. Patrakov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. S. A. Semenova
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. T. A. Papina
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding authors

Correspondence to Yu. F. Patrakov, S. A. Semenova or T. A. Papina.

Additional information

Translated by B. Gilbert

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Patrakov, Y.F., Semenova, S.A. & Papina, T.A. Influence of Gas Microbubbles on the Wettability of Coal Surfaces. Coke Chem. 63, 63–67 (2020). https://doi.org/10.3103/S1068364X20020076

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.3103/S1068364X20020076

Keywords:

Search

Navigation