Role of shape properties of calcite and barite particles on apparent hydrophobicity

Date

2004-08-01

Author

Ulusoy, U
Hicyilmaz, C
Yekeler, M

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Shape properties of calcite and barite particles ground by ball, rod and autogenous mills were examined by using scanning electron microscope (SEM). Shape properties have been stated in terms of shape descriptors such as elongation ratio, flatness, roundness and relative width by measuring about 200 particles. The results were correlated with the critical surface tension (gamma(c)) of wetting determined by contact angle and micro-flotation methods. The correlations set between the shape properties and the wettability for the minerals studied are in the form of "gamma(c) = a (shape property) + b" type of equations (where a and b are constants). The results revealed that particles with higher flatness and elongation ratio had higher apparent hydrophobicity without being affected by the mill type.

Subject Keywords

Shape property, Hydrophobicity, Grinding, Calcite, Barite

URI

https://hdl.handle.net/11511/67226

Journal

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION

DOI

https://doi.org/10.1016/j.cep.2003.10.003

Collections

Department of Mining Engineering, Article

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Citation Formats

U. Ulusoy, C. Hicyilmaz, and M. Yekeler, “Role of shape properties of calcite and barite particles on apparent hydrophobicity,” CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, pp. 1047–1053, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67226.