摘要:The feasibility of copper smelter slag processing by ammonia solution treatment was investigated. The central composite rotatable design (CCRD) and approximation method were used to determine the optimum conditions of zinc and copper recovery to a solution. The experimental design was done at five levels of the four operating parameters which were the initial concentration of NH3, the initial Cl– ions concentration, leaching time and solid/liquid ratio. Two mathematical models describing dependence of metal recovery on the operating parameters were obtained. The models are successful in predicting the responses. It was found that optimal parameters for zinc and copper recovery are as follows (values for copper are given in brackets): initial CNH3 17.1% (19.9%),initial CCl– 160 g/L (160 g/L), leaching process duration 4.56 h (4.13 h), solid/liquid ratio 0.39 (0.53). The maximum Zn and Cu recoveries to solution, obtained experimentally under the conditions, are 81.16% and 56.48%, respectively.
注:因版权方要求,不能公开全文,如需全文,请咨询杂志社
热门期刊服务
Acta Pharmacologica Sinica Journal of Semiconductors Journal of Genetics and Genomics Communications in Theoretical Physics Hepatobiliary Pancreatic Diseases International Journal of Systems Engineering and Electronics Hepatobiliary Pancreatic Diseases International China World Economy Chinese Optics Letters Applied Geophysics Acta Geologica Sinica Acta Oceanologica Sinica