Beneficiation of phosphates : technology advance and by Patrick Zhang, Karen Swager, Laurindo Filho, Hassan El-Shall

By Patrick Zhang, Karen Swager, Laurindo Filho, Hassan El-Shall

Beneficiation of Phosphates: know-how develop and Adoption is the specific resource of data on learn and expertise 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 unparalleled swap and prosperity.

summary: Beneficiation of Phosphates: know-how strengthen and Adoption is the unique resource of data on learn and expertise advances in phosphate mineral processing. greater than a hundred across the world revered authors from 20 nations discover the newest advancements in an experiencing remarkable switch and prosperity

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The Influence of Micas and Related Minerals on the Direct Anionic Flotation of Apatite from the Tapira Mine, Brazil—Part 1. M. G. S. M. Coelho* ABSTRACT INTRODUCTION Three micaceous minerals (biotite and two vermiculite-biotite interlayered phyllosilicates), constituents of the phosphate ore of Tapira-MG, Brazil, were studied. Weathering degree, chemical composition, cation exchange capacity and solubility were determined and discussed in terms of flotation response (recovery) of the minerals with rice bran oil soap at pH=10.

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.

In addition to several polymeric solids, different ranks of coals and ore minerals coated with a variety of surfactants generally exhibit a linear relationship between cos q and gLV (Kelebek et al 1987, Yarar 1988). A process, named “gamma flotation” by Yarar (Yarar 1988), relies on controlling gLV such that gC of the mineral desired to float satisfies the condition gLV > gC, while the minerals not desired to float satisfy the condition gLV ≤ gC. 7mN/m at 20°C) and water © 2010 by the Society for Mining, Metallurgy, and Exploration.

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