中南民族大学学报：自然科学版2012，Vol.31Issue(4)：6-10,5.
氨浸法从含砷石灰铁盐渣中回收锌的动力学研究
Kinetics Research on the Recovery of Zinc from Solid Waste Containing Arsenic by Ammonia Leaching Method
摘要
Abstract
Zinc from solid waste containing arsenic was recovered by ammonia leaching method. The effects of different leachant, leachant composition, total ammonia concentration, molar concentration ratio of NH3 to NH4+ , liquid-solid ratio on zinc leaching were investigated and its kinetics of was also analyzed. The results indicated that 56.21% of zinc was recovered when c(ammonia) = 5 mol/L, c ( NH3 ) : c ( NH4+ ) = 2: 3, L/S ratio = 4: 1. And the leaching process by macro model followed the shrinking-core model at the temperature ranging from 288 K to 328 K, which was controlled by the inner ~ - 32245, diffusion of reactants. The leaching kinetics equation was established as 1-2α3-(1-α)2/3=232×exp(-32245/RT)t, and the apparent activation energy is 32.24 kJ/mol.关键词
含砷石灰铁盐渣/氨浸法/浸出动力学/锌Key words
solid waste containing arsenic/ammonia leaching method/leaching kinetics/Zinc分类
资源环境引用本文复制引用
杜冬云,倪冲,赵燕鹏,阮福辉,卢娜..氨浸法从含砷石灰铁盐渣中回收锌的动力学研究[J].中南民族大学学报：自然科学版,2012,31(4):6-10,5.基金项目
武汉市重点科技攻关资助项目 （）
