Effect of electrochemical oxidized kerosene on flotation rate of difficult-to-float fine coal

ABSTRACT

In order to recover difficult-to-float fine coal, flotation rates of full-size coal are tested using electrochemical oxidized kerosene as a collector. The flotation rate of coal using oxidized kerosene is higher than that of adopting conventional kerosene. However, its flotation product contained more ash due to poor selectivity of oxidized kerosene. The maximum recovery and flotation rate constant of the model were calculated by Curve Fitting Tool in MATLAB software, and the correlation coefficient R² of each model is obtained. It is found that the classic first-order kinetic model is the most suitable model for the flotation of kerosene and oxidized kerosene.

KEYWORDS:

• Kerosene
• flotation
• difficult-to-float coal
• flotation rate
• kinetic model

Acknowledgments

The financial supports from Inner Mongolia University of Technology (Project approval number: X201719) for this work are gratefully acknowledged.

Additional information

Funding

This work was supported by the Inner Mongolia University of Technology [X201719].

Notes on contributors

Tao Zhang

Tao Zhang, born in 1987, teacher of Mining Institute of Inner Mongolia University of Technology, engaged in mineral processing research.

Hongbo Zhang

Hongbo Zhang, born in 1970, professor of Mining College of Inner Mongolia University of Technology, engaged in teaching and scientific research of mineral processing engineering.

Xiang Liu

Xiang Liu, born in 1992, teacher of Mining Institute of Inner Mongolia University of Technology, engaged in mineral processing research.

Huifen Yang

Xiaofeng Ma, born in 1987, teacher of Materials science and engineering Institute of Inner Mongolia University of Technology, engaged in Material research.