Beneficiation of phosphates : technology advance and by Patrick Zhang; et al

By Patrick Zhang; et al

Beneficiation of Phosphates: expertise increase and Adoption is the unique resource of data on study and know-how advances in phosphate mineral processing. greater than a hundred across the world revered authors from 20 international locations discover the most recent advancements in an experiencing extraordinary swap and prosperity.

content material: part 1: basics --
part 2: Sustainability and the surroundings --
part three: Reagents --
part four: procedure suggestions --
part five: research and keep an eye on --
part 6: Hydrometallurgical processing --
part 7: Processing of refractory ores --
part eight: Flotation examine and practice.
summary: Beneficiation of Phosphates: know-how increase and Adoption is the particular resource of data on study and know-how advances in phosphate mineral processing. greater than a hundred the world over revered authors from 20 nations discover the most recent advancements in an experiencing unparalleled switch and prosperity

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Extra resources for Beneficiation of phosphates : technology advance and adoption

Example text

Only those hydrophobic particles whose induction time is smaller than the sliding time can be attached to air bubbles. Dai et al. (1998) and Ralston et al. (1999) found that Pa decreases with increasing particle size and increases with increasing particle hydrophobicity. Luttrell and Yoon (1992) showed that Pa increases with decreasing induction time. The presence of picobubbles on particle surface will increases particle’s hydrophobicity, reduces induction time and thus increases Pa. The presence of picobubbles on phosphate particles surfaces improves the flotation kinetics mainly because picobubbles make it easier for particles to attach to conventional-sized bubbles.

Critical surface tension of wetting and flotation separation of hydrophobic solids. Separation Science, 22: 1527–1546. , 2001. Estudo dos mecanismos geradores de seletividade na separacao apatita/silicatos e apatita/oxidos por flotação anionica. Final Project Report. Grant 00/01949-4 (text in Portuguese). Martins, M. , 2007. Medida de angulo de contato de particulas de apatita pelo metodo de ascensao capilar. VII Meeting of Southern Hemisphere on Mineral Technology, XXII Encontro Nacional de Tratamento de Minerios e Metalurgia Extrativa (proceedings).

18 mm) remains a recognized challenge although some efforts have been made to improve the flotation process. Previous studies have shown that coarse particle flotation performance can be enhanced by picobubbles generated by hydrodynamic cavitation. In this work, a picobubble enhanced flotation column has been developed for enhancing recovery of coarse phosphate particles. Picobubble size was measured by a laser particle size analyzer. The collector dosage was reduced by one half to two thirds as a result of the selective adsorption of picobubbles on hydrophobic phosphate particle, which act as a secondary collector.

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