Potassium chloride recovery from mechanically activated microcline through the chlorination roasting and leaching route

In this study, effects of mechanical activation in the chlorination roasting and water leaching route known as CaCl2 process developed for production potassium chloride (KCl) from feldspar ores were studied. A microcline containing K-feldspar ore with 10.89% K2O was first intensively dry milled by a planetary ball mill mixed calcium (CaCl2) then roasted at temperatures up to 1000 °C obtain KCl that will be finally dissolved leaching. Potassium recovery increased rapidly 800 °C. At higher temperatures, decreased fast due evaporation KCl. According K values per unit energy consumed, optimum temperature determined 750 milling time 15 min. It concluded intensive causes reduce temperature, which triggers rise