Beneficiation of Collophanite from Ores by Reverse Flotation

Zhao, Jun; Ge, Ying Yong; Yang, Zhi Chao; Zeng, Lingmin; Zhu, Jin

doi:10.4028/www.scientific.net/amr.900.656

Cited by 1 publication

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References 9 publications

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“…A reverse flotation process with cationic collectors is used to float silicate gangue minerals, while the phosphate minerals are depressed in a weak acidic medium environment [8]. However, this method always generates a froth concentrate with a high viscosity caused by the common cationic collectors, resulting in the difficulty of filtrating the float products [9,10]. Therefore, efforts have been paid to the direct flotation process with anionic collectors, which can overcome the disadvantages of the reverse flotation process and which displays a better filtration performance of the corresponding froth products.…”

Section: Introductionmentioning

confidence: 99%

Ambient Temperature Flotation of Sedimentary Phosphate Ore Using Cottonseed Oil as a Collector

et al. 2017

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Abstract:The mid-low grade sedimentary phosphate ore, abundant in silicate and carbonate gangue minerals, exhibits a poor processability. It is conventionally enriched using high temperature flotation to remove silicate gangues with fatty acid as a collector. Cottonseed oil has been proved to be an efficient collector for achieving ambient temperature flotation of the sedimentary phosphate ore used in this study. Flotation kinetics was investigated to ascertain the excellent collecting performance of cottonseed oil, as compared with oleic acid, and the phosphate flotation fitted well with the first-order flotation model. Based on the analysis of flotation reagent effect on the direct flotation process using the response surface methodology (RSM), a closed circuit of direct-reverse flotation for stepwise removing silicate and carbonate gangues from the sedimentary phosphate ore was established. Consequently, a required high quality of phosphate concentrate containing 30.16% P 2 O 5 was obtained, with a recovery of 90.90%. Scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) of the flotation products confirmed that the majority of silicate and carbonate gangues were effectively removed from the concentrate products.

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Section: Introductionmentioning

confidence: 99%