Abstarct: Bauxite is a sedimentary rock with a relatively high aluminum content. It is the world's main source of aluminum. Bauxite consists mostly of the aluminum minerals gibbsite, boehmite and diaspore, mixed with impurities such as the two iron oxides goethite and hematite the aluminum clay mineral kaolinite and small amounts of Titanium oxides anatase and ilmenite. Important impurities available in shale (low-grade) bauxites of Jajarm alumina plant are iron and silica. In this study, the possibility of removing these impurities from bauxite sample was investigated using mineral processing and hydromextallurgical methods. Using XRF analysis, the amounts of Al2O3, SiO2, and Fe2O3 were 29.2%, 26.7% and 25%, respectively. Also, results of XRD and mineralogy studies showed that diaspore, hematite, kaolinite and goethite minerals are the main minerals in the sample. Using ICP analysis, Al and Fe grades were determined 15% and 17.8%, respectively. To remove impurities of ferrous minerals, high-intensity magnetic tests were performed on the sample to reduce the iron in the 1000-2360 micron sizes at 11,000 Gauss magnetic field intensity. Then, for the removal of the silica in the sample, stirring leaching was used. Design of Experiments software was also used for leaching experiments. The results of high-intensity magnetic tests showed that in the non-magnetic part, the alumina (Al2O3) recovery was about 90% with a grade of 35.5%. Also, in the magnetic part, Fe (Fe2O3) grade was 46.89% and its recovery reached 31%. Also by conducting leaching experiments on calcined sample at 1000 °C for 45 minutes as well as its leaching in caustic soda (NaOH) at a concentration of 180 g/L at 65 °C and 60 min time, SiO2 recovery reached about 82.84%.