Flotation performance and mechanism of a novel collector for picromerite: Experimental and DFT study
Chemical Physics Letters(2024)
摘要
Sodium dodecyl benzene sulfonate (SDBS) was developed to separate picromerite and halite as collector. The flotation tests showed that SDBS could separate picromerite from halite, the K+ recovery was 95.64 % and Na+ content was 1.42 % at SDBS dosage of 300 g/t. DFT calculations revealed that SDBS tended to adsorb on picromerite (-585.75 kJ/mol) than halite (-98.03 kJ/mol), and the selectivity of SDBS was better than SDS. Furthermore, SDBS chemically adsorbed on picromerite by the hybridization of O 2p within sulfonate and Mg 3 s of picromerite. This work further provides a reference for effectively separate picromerite and halite in industrial production.
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关键词
Picromerite,Halite,Density functional theory,Collector,Flotation separation
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