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Open AccessArticle

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

1
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
2
School of Resource and Civil Engineering, Wuhan Institute of Technology, Wuhan 430073, China
3
School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China
*
Author to whom correspondence should be addressed.
Academic Editor: Massimiliano Zanin
Minerals 2017, 7(5), 65; https://doi.org/10.3390/min7050065
Received: 17 March 2017 / Revised: 17 April 2017 / Accepted: 18 April 2017 / Published: 26 April 2017
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% P2O5 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. View Full-Text
Keywords: cottonseed oil; sedimentary phosphate ore; flotation; ambient temperature cottonseed oil; sedimentary phosphate ore; flotation; ambient temperature
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MDPI and ACS Style

Ruan, Y.; Zhang, Z.; Luo, H.; Xiao, C.; Zhou, F.; Chi, R. Ambient Temperature Flotation of Sedimentary Phosphate Ore Using Cottonseed Oil as a Collector. Minerals 2017, 7, 65. https://doi.org/10.3390/min7050065

AMA Style

Ruan Y, Zhang Z, Luo H, Xiao C, Zhou F, Chi R. Ambient Temperature Flotation of Sedimentary Phosphate Ore Using Cottonseed Oil as a Collector. Minerals. 2017; 7(5):65. https://doi.org/10.3390/min7050065

Chicago/Turabian Style

Ruan, Yaoyang; Zhang, Zeqiang; Luo, Huihua; Xiao, Chunqiao; Zhou, Fang; Chi, Ruan. 2017. "Ambient Temperature Flotation of Sedimentary Phosphate Ore Using Cottonseed Oil as a Collector" Minerals 7, no. 5: 65. https://doi.org/10.3390/min7050065

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