Influence of copper ion addition on fine coal filter cake parameters

S. M. Khandrika, J. G. Groppo, B. K. Parekh

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


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.

Original languageEnglish
Pages (from-to)46-49
Number of pages4
JournalMinerals and Metallurgical Processing
Issue number1
StatePublished - 1994

ASJC Scopus subject areas

  • Control and Systems Engineering
  • General Chemistry
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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