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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Surface tension of flotation solution and its influence on the selectivity of the separation between apatite and gangue minerals

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Author(s):
Martins, M. [1] ; Leal Filho, L. S. [1] ; Parekh, B. K. [2]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Sch Engn, Mineral Proc Res Grp, Sao Paulo - Brazil
[2] Univ Kentucky Lexington, Ctr Appl Energy Res, Lexington, KY - USA
Total Affiliations: 2
Document type: Journal article
Source: MINERALS & METALLURGICAL PROCESSING; v. 26, n. 2, p. 79-84, MAY 2009.
Web of Science Citations: 0
Abstract

This work presents and discusses the influence of the surface tension (gamma(LV)) of methanol/water mixtures on the flotation response of apatite versus gangue minerals conditioned with flotation reagents (75 g/t cornstarch and 100 g/t Berol 867) at pH 10.6. Berol 867 is a collector composed of sodium alkyl sarcosinate plus nonionic surfactant. The highest Schulz efficiency of separation (recovery of apatite minus recovery of gangue) was achieved at approximate to 51.0 mN/m. The critical surface tension of wettability (gamma(C)) of apatite was found to occur at 34.7 mN/m when determined by means of gamma flotation experiments, , and it was 33.9 mN/m when determined by Zisman's approach. (AU)