A study has been made of the leaching process to remove iron oxides from quartz presented in kaolin washing plant tailings. The tailings mineralogical constituents were quartz, clay minerals, hematite, and calcite. The leaching rate of Fe2O3 increased with increasing acid concentration, temperature, reaction time, and decreasing pulp solid percent. Shrinking core first-order kinetics model was presented to analyse the data. The activation energy was 23.51kJ/mol and process was reaction-controlled process (1-(1-)1/3=46.52e-23.51/RTt). Using this method, the Fe2O3 amount decreased to 0.03% with a recovery of 89.06%. The results showed that the leaching approach was the best method for the management of these tailings.