Effect of Ether Mono Amine Collector on the Cationic Flotation of Micaceous Minerals—A Comparative Study

Arash Tohry, Reza Dehghan, Hossein Mohammadi-Manesh, Laurindo de Salles Leal Filho and Saeed Chehreh Chelgani
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Arash Tohry: Mineral Processing, Department of Mining and Metallurgical Engineering, Yazd University, Yazd 89195-741, Iran
Reza Dehghan: Mineral Processing, Department of Mining and Metallurgical Engineering, Yazd University, Yazd 89195-741, Iran
Hossein Mohammadi-Manesh: Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran
Laurindo de Salles Leal Filho: Laboratory of Transport Phenomena and Chemistry of Interfaces, Department of Mining and Petroleum Engineering, University of São Paulo, São Paulo 05508-010, Brazil
Saeed Chehreh Chelgani: Minerals and Metallurgical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden

Sustainability, 2021, vol. 13, issue 19, 1-13

Abstract: Micaceous minerals, known as layer silicates, are counted mostly as the gangue minerals associated with valuable minerals, especially iron oxides. They mainly reject through the reverse flotation process using the cationic collectors, e.g., ether amines, to improve process sustainability. Although ether amines have been applied for floating the wide range of silicates, few investigations explored their adsorption behaviors on the micaceous minerals. In this study, flotation of phlogopite, biotite, and quartz (for comparison purposes) in the presence of Flotigam ® EDA (EDA) (commercial ether monoamine collector), at pH 10 was investigated through the single mineral micro–flotation experiments. Adsorption behaviors were explored by the contact angle, residual surface tension measurements, and zeta potential analyses. Micro–flotation outcomes indicated that the quartz floatability was more than phlogopite and biotite. In the presence of 30 mg/dm 3 EDA, their recoveries were 97.1, 46.3, and 63.8%, respectively. Increasing EDA concentration made a substantial increase in micaceous minerals’ floatability. Adsorption assessments confirmed that increasing the EDA concentration resulted in higher adsorption of EDA onto the surface of micaceous minerals than the quartz (all by physical adsorption). Such a behavior could be related to the nature of micaceous minerals, including their layer structure and low hardness.

Keywords: Flotigam ® EDA; micaceous minerals; quartz; adsorption (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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