Abstract The technology and reaction kinetics of leaching Al from the mixed explosive were investigated. The effects of temperature, H2SO4 concentration, size of explosive and stirring strength on reaction were discussed. The results show that suitable extraction technology is: reaction temperature between 40 ℃ and 50 ℃, sulfuric acid concentration 0.8 mol/L, size of explosive 50 meshes. The process of leaching Al can be described by shrinking unreacted core model and meet kinetic equation g(x)=1-(1-x)1/3=kt. The leaching kinetics was contolled by chemical reaction, and appearance activation energy is 42.392 kJ/mol. Linear regression analysis was applied and found that the apparent reacting rate constant was directly proportional to the concentration of H2SO4(c0) and the size of explosive(1/r02).
JI Wen-Su, DING Yu-Kui, LI Jin-Ming, TAO Qing-Qing.Technology and Kinetics of Leaching Al from Mixed Explosive[J] Chemcial Industry and Engineering, 2011,V28(4): 16-21
2011, Vol. 28 
