This study aims to investigate the effect of different flux addition and time on refining of crown magnesium produced via Pidgeon Process. The different flux compositions (MgCl(2), KCl, CaCl(2), MgO, CaF(2), NaCl, and SiO(2)) with and without B(2)O(3) additions and reaction durations (15-45 min) were selected in order to lower the iron content in Mg ingot samples at 690 degrees C. The chemical composition of the final ingots was measured by using wet chemical analysis technique. Each final ingot was also subjected to a corrosion test to understand the influence of iron to Mg corrosion. It is found that selected flux compositions can decrease iron content in the Mg ingot from 0.080 % to 0.0027 %. The corrosion test results showed that corrosion rates decreased with decreasing iron content in Mg ingots. The minimum corrosion rate obtained was 0.235 mg/cm(2)/day.