Study on the Adsorption Behavior of Three Common Collectors on Galena Surface

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School of Chemistry and Chemical Engineering of Guangxi University for Nationalities,Key Laboratory of Chemical and Biological Transformation Process of Guangxi Higher Education Institutes,Guangxi University for Nationalities,School of Chemistry and Chemical Engineering of Guangxi University for Nationalities,Key Laboratory of Chemical and Biological Transformation Process of Guangxi Higher Education Institutes,Guangxi University for Nationalities,School of Chemistry and Chemical Engineering of Guangxi University for Nationalities,Key Laboratory of Chemical and Biological Transformation Process of Guangxi Higher Education Institutes,Guangxi University for Nationalities,School of Chemistry and Chemical Engineering of Guangxi University for Nationalities,Key Laboratory of Chemical and Biological Transformation Process of Guangxi Higher Education Institutes,Guangxi University for Nationalities,School of Chemistry and Chemical Engineering of Guangxi University for Nationalities,Key Laboratory of Chemical and Biological Transformation Process of Guangxi Higher Education Institutes,Guangxi University for Nationalities,School of Chemistry and Chemical Engineering of Guangxi University for Nationalities,Key Laboratory of Chemical and Biological Transformation Process of Guangxi Higher Education Institutes,Guangxi University for Nationalities

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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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Abstract:

Butyl xanthate,ammonium dibutyl dithiophosphate and diethyldithiocarbamate are three common collectors of galena. Their adsorption energy on galena surface were investigated based on density functional theory from microscopic view, and their adsorption thermodynamics were studied by static adsorption method. The results of simulation calculation show that ammonium dibuyldithiophosphate exhibits the lowest capacity of eqiliblium adsorption. Therefore it is easy to adsorb on the surface of galena, followed by butyl xanthate and diethyldithiocarbamate. The results of static adsorption indicated that adsorptive capacity of these collectors on galena increased with the rise of temperature, and their adsorption isotherm are better fit to Langmuir equation. The adsorption processes are preferential due to n >1, and endothermic based on 2

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Received:January 04,2017
Revised:January 16,2017
Accepted:January 17,2017
Available Online:November 08,2017
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