Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 98, Issue -, Pages 451-455Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2012.06.016
Keywords
Floc-flotation; Molybdenite; Fine particles; Hydrophobic agglomeration
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Funding
- Consejo Nacional de Ciencia y Tecnologia (CONACyT) of Mexico [92506, 123487, 155148]
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The flotation of molybdenite fines as hydrophobic agglomerates has been studied through micro-flotation and microscopy observations in this work. The hydrophobic agglomeration was achieved with a strong mechanical conditioning and a small amount of kerosene addition. The experimental results showed that floc-flotation is much more effective than conventional flotation for the beneficiation of molybdenite fines. At the same flotation time, floc-flotation reached the flotability of 90%, while conventional flotation only did 35%. The most important parameters in the floc-flotation were mechanical conditioning strength and kerosene addition. A good floc-flotation could be achieved by applying a high-speed stirring for a short time. The kerosene enhancement of the floc-flotation closely correlated with droplet size of kerosene emulsion. The smaller were the droplets, the better the floc-flotation was. (C) 2012 Elsevier B.V. All rights reserved.
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