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Application of response surface methodology and central composite rotatable design for modeling the influence of some operating variables of the lab scale thickener performance

查看全文 作　　者：Aghajani Shahrivar [1]Alireza;Soltani Goharrizi [1]Ataallah;Ebrahimzadeh Gheshlaghi [1]Majid;Sarafi [1]Amir;Razmirad [1]Mohammad;Abdollahi [2]Hadi 高影响力作者 机构地区：[1]Department of Chemical Engineering,University of Shahid Bahonar;[2]School of Mining Engineering,College of Engineering,University of Tehran高影响力机构 出　　处：《International Journal of Mining Science and Technology》索引2013年第23卷第5期,共8页高影响力期刊 基　　金：supported by the National Iranian Copper Industry Co. 摘　　要：This study discussed the application of response surface methodology(RSM)and central composite rotatable design(CCRD)for modeling and optimization of the influence of some operating variables on the performance of a lab scale thickener for dewatering of tailing in the flotation circuit.Four thickener operating variables,namely feed flowrate,solid percent,flocculant dosage and feedwell height were changed during the tests based on CCRD.The ranges of values of the thickener variables used in the design were a feed flowrate of 9–21 L/min,solid percent of 8%–20%,flocculant dosage of 1.25–4.25 g/t and feedwell height of 16–26 cm.A total of 30 thickening tests were conducted using lab scale thickener on flotation tailing obtained from the Sarcheshmeh copper mine,Iran.The underflow solid percent and bed height were expressed as functions of four operating parameters of thickener.Predicted values were found to be in good agreement with experimental values(R2values of 0.992 and 0.997 for underflow solid percent and bed height,respectively).This study has shown that the RSM and CCRD could effciently be applied for the modeling of thickener for dewatering of flotation tailing. 关 键 词：Response surface methodology Central composite rotatable design MODELING THICKENER
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