Leaching for iron removal from low-grade bauxite ore to access refractory instruction

Iron-bearing minerals are the most important interfering compounds that found with bauxite reserves. The element iron has adverse effects on applications, including use of in refractory soils. purpose this research is to investigate possibility removal from low-grade ores utilize them industries. For achieving purpose, tests were performed samples an alumina silica modulus 0.73. After determining appropriate method among magnetic separation, calcination, and leaching (with H2SO4 HCl) processes, optimal separation conditions determined by designed using Taguchi method. According results, HCl for raw feed (un-calcined) provided best result removal. During test, Fe2O3 grade decreased 5.14% 0.08%, increased 0.75. Calcination concentrate obtained test led favorable results reducing (0.04%) increasing Al2O3 grade. Afterwards, method, effect parameters such as time, process temperature, concentration, grain size processes discussed. efficiency a 250 µm achieved following conditions: 30% HCl, temperature 25°C, time 120 minutes. In case, 92.78% 0.56%, respectively.