Extraction of Potassium from Microcline by Chlorination
AbstractA pyrometallurgical route for the extraction of potassium from microcline was investigated. The reagents used were microcline, calcite and chlorine gas. Isothermal and non-isothermal chlorination assays were performed using experimental equipment adapted for working in corrosive atmospheres. The effects of temperature and reaction time on the chlorination reaction of the microcline-calcite mixture were studied. The reaction mechanism was also investigated. The techniques used to characterize reagents and products were thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and electron probe microanalysis (EPMA). The experimental results showed that the extraction of potassium in the form of KCl begins at 700 °C for 15 min. Anorthite also starts to be produced under these conditions. The optimum conditions for quantitative extraction of potassium and selective formation of anorthite were 900 °C for 60 min. View Full-Text
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Orosco, P.; Barrios, O.; Ojeda, M. Extraction of Potassium from Microcline by Chlorination. Minerals 2019, 9, 295.
Orosco P, Barrios O, Ojeda M. Extraction of Potassium from Microcline by Chlorination. Minerals. 2019; 9(5):295.Chicago/Turabian Style
Orosco, Pablo; Barrios, Oriana; Ojeda, Manuel. 2019. "Extraction of Potassium from Microcline by Chlorination." Minerals 9, no. 5: 295.
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