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Influence of copper ion addition on fine coal filter cake parameters

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Abstract

It is shown that dewatering of fine coal particles (D50 = 21 µm) is enhanced near the point-of-zero-charge. The coal surface is modified by the addition of copper ions and by adjusting the pH to precipitate surface-active metal hydroxy species, which promote agglomeration and produce low-moisture cakes. Filtration kinetics data are used in calculating filter cake parameters from an integrated form of Darcy’s law. The influence of copper ions and pH on filter cake parameters and the correlations among them are presented.

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References

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Authors and Affiliations

  1. Kentucky Center for Applied Energy Research, Lexington, KY, USA

    S. M. Khandrika (member SME, post doctoral scholar), J. G. Groppo (member SME, mining engineer) & B. K. Parekh (member SME, associate director)

Authors
  1. S. M. Khandrika
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  2. J. G. Groppo
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  3. B. K. Parekh
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Additional information

SME Preprint 93-135, SME Annual Meeting, Feb. 15–18, 1993, Reno, NV. M&MP paper 93-614.

Discussion of this peer-reviewed and approved paper is invited and must be submitted, in duplicate, prior to May 31, 1994.

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Khandrika, S.M., Groppo, J.G. & Parekh, B.K. Influence of copper ion addition on fine coal filter cake parameters. Mining, Metallurgy & Exploration 11, 46–49 (1994). https://doi.org/10.1007/BF03403040

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  • DOI: https://doi.org/10.1007/BF03403040

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