Abstarct: Aluminum is one of the most widely used and important mextals on earth. Due to its unique properties, this mextal has a special place in the world market. The primary material for the production of this mextal is alumina. Alumina is converted to aluminum by the Hall-Héroult process. The main source of alumina production is bauxite ore. Alumina production from bauxite is done by Bayer process. Due to the decrease in bauxite quality resources and the increase in the need for aluminum, attention has been paid to the production of alumina from non-bauxite sources. One of the most important non-bauxite sources is alunite. Various methods have been invented to produce alumina from alunite, and the acid-baxse method was investigated in this research. First, the calcination of crushed alunite ore was investigated. For this purpose, the experiment design method was used and after the experiments, it was found that the highest aluminum recovery was obtained at a temperature of 500 Celsius degree and a duration of 30 minutes. Then the sample was leached with sulfuric acid. Experimental design was used to increase aluminum recovery and reduce iron and silica impurities. After the experiments, the optimal leaching conditions were determined. Temperature 27°C, solid percentage 32%, size 1199 microns, stoichiometric ratio 1.6, time 114 minutes, stirring speed 900 rpm. In this condition, the recovery of aluminum reached 92% and the content of silica and iron in the solution was almost zero. Finally, by increasing pH with ammonium hydroxide, aluminum hydroxide was precipitated, which was designed to increase precipitation. The highest concentration was obtained in the specified conditions. pH equal to 8.8, time equal to 30 minutes, stirring speed equal to 105 rpm, temperature equal to 56 °C. In this case, 94% recovery was achieved.