Application of response surface methodology in optimizaing thesulfation-roasting-leaching process of nickel laterite

查看全文 作　　者：Xue-yi [1]Guo;Dong [1]Li;Zhan [1]Wu;Qing-hua [1]Tian

机构地区：[1]School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》索引2012年第19卷第3期,共6页

摘　　要：Nickel was recovered from nickel laterite using a sulfation-roasting-leaching process and the effects of operation parameters in-cluding acid addition,roasting temperature,and roasting time on nickel extraction and iron dissolution were investigated using response surface methodology(RSM).Two second-order polynomial models of high significance were presented to show the relationship between the responses and the variables.The analysis of variance(ANOVA) showed high coefficients of determination(R2) of 0.894 and 0.980 for the two models,respectively.Optimum areas of ≥80% Ni extraction and ≥5% Fe dissolution were obtained by the overlaid contours.Verification experiments in the optimum areas were conducted and the results indicate a close agreement with the predicted values obtained from the models. 关键词：硫酸化焙烧镍矿响应面法浸出过程红土多项式模型应用运行参数

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Application of response surface methodology in optimizaing thesulfation-roasting-leaching process of nickel laterite

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