Effect of iodine value of sodium fatty acids on flotation of collophanite
Runzhe Liu 1, 2,   Guofan Zhang 1  
,   Hui Zhang 2,   Lifen Liu 2,   Lin He 3,   Yanfei Chen 1
 
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1
School of Mineral Processing and Bioengineering, Central South University
2
Yunnan Phosphate Chemical Group Co. Ltd
3
School of Chemical Engineering and Technology, Tianjin University
CORRESPONDING AUTHOR
Guofan Zhang   

School of Mineral Processing and Bioengineering, Central South University, No.932 South Lushan Road, 410086 Changsha, China
Publication date: 2019-04-24
 
Physicochem. Probl. Miner. Process. 2019;55(3):770–778
 
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ABSTRACT
The sodium fatty acids were firstly prepared by fatty acids with different iodine values which were from surfactant extraction using soybean oil fatty acid as raw material in this study. Effects of iodine value of sodium fatty acids on the flotation of collophanite were then investigated by flotation tests, contact angle measurements, adsorption tests, Krafft point measurements, foaming ability tests, and the resistance to the hard water measurements. Results show that the final flotation recovery was directly proportional to the iodine value of sodium fatty acid. Sodium fatty acid with higher iodine value has higher solubility and dispersity in the solutions, and stronger foaming ability and resistance to hard water. After interacting with collophanite, sodium fatty acid with higher iodine value made the mineral more hydrophobic, thus contributing to better flotation performances.
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ISSN:1643-1049