Proses Pelarutan Bijih Dolomit Dalam Larutan Asam Klorida

Leaching is important process in the preparation of dolomite processing so that it can be used in various applications in the industry. One of the most important factors in the leaching is the concentration of the solvent and the process temperature. To determine the effect of these parameters, then the leaching of dolomite by using a solution of hydrochloric acid was investigated. This study aims to determine the effect of acid concentration and process temperature in the leaching of dolomite using hydrochloric acid. The leaching process was carried out on 20 gram samples of dolomite with acid concentrations of 1, 2, 3, 4 N at 30, 50, 70, 90 oC.The leaching process was conducted on 20gram samples of dolomite with acid concentrations of 1, 2, 3, 4 N at 30, 50, 70 and 90 oC. The experimental results indicate that the extraction of magnesium and calcium tends to increase along with the increase of acid concentration and temperature of the leaching process. Teh optimum leaching process of dolomite is achieved at a temperature of 30 oC with a concentration of 4 N HCl for5 hours with calcium and magnesium extracted about 60.31 persen and 25.79 persen.Keywords: Hydrochloric acid, Dolomite, Calsium-magnesium, Leaching. Seminar Sains dan Teknologi 2016