The effects of calcination temperature,liquid⁃solid ratio and pH on metal recovery were investigated in this work.The influence of the ratio of raw materials, calcination temperature, calcination time,liquid⁃solid ratio and water immersion time on the conversion of alumina was investigated by orthogonal experiment,and characterized by N2 physical adsorption desorption,XRD and SEM.The results showed that 94.0% molybdenum and vanadium could be leached out with the calcination temperature of 800 ℃ and liquid⁃solid ratio of 5∶1.Furthermore,97.6% of the molybdenum ions could be recovered when the pH reached to 1. Through the orthogonal experiment,the recovery conditions of alumina were determined: the ratio of raw material to solid was 1.5,the calcination temperature was 900 ℃,the calcination time was 3 h,the ratio of liquid to solid was 5∶1,and the water immersion time was 15 min.