Process and Kinetics of Preparing Ammonium Molybdate from Molybdenum Concentrate by Microwave Roasting-Ammonia Leaching

On the basis of previous work, this paper systematically investigates the influence parameters and leaching kinetics of the ammonia leaching process of molybdenum calcine obtained by microwave roasting. The conditions of the ammonia leaching process of calcined molybdenum were optimized by changing the parameters of ammonia concentration, solid–liquid ratio, and leaching temperature. The results show that, when the concentration of ammonia was 25 1/3ln( 1 - x) + ( 1 - x)^ - 1/3 - 1 = 14.97ω_ammonia^2.004 (L/S)^ - 2.44 e^ - 57800/RT t .