NH4Cl selective leaching of basic oxygen furnace slag: Optimization study using response surface methodology
Sun, Yong1,2; Zhang, Jing Ping2; Zhang, Lian3
2016-09-01
发表期刊ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
ISSN1944-7442
卷号35期号:5页码:1387-1394
摘要

The basic oxygen furnace slag (SL) was selectively leached by NH4Cl. Response surface methodology and the central composite design (CCD) were employed in determining the optimal condition. The process parameters such as leaching duration, NH4Cl concentration, liquid solid ratio (LSR), and leaching temperature were chosen as independent variables in CCD. The quadratic model was developed for process optimization and statistical experimental designs. It is found that the leaching duration, NH4Cl concentration and liquid solid ratio are significant to the extraction of Ca2+ and Mg2+. The optimal conditions with setting maximum extraction of calcium and magnesium cations from SL are as following: 68min (X-1), 1.8mol/L NH4Cl (X-2), LSR 12mL/g (X-3), 53 degrees C (X-4), with the predicted Ca2+ and Mg2+ concentration reaching 13.3 and 3.2g/L, respectively. The proposed simplified leaching mechanism indicates a two-stage leaching. The prone leachable MgFe2O4 and Ca2Fe2O5 are extracted in the fast stage, while the extraction of CaO occurs throughout slow stage. (c) 2016 American Institute of Chemical Engineers Environ Prog, 35: 1387-1394, 2016

关键词Basic Oxygen Furnace Steelmaking Slag Nh4cl Statistical Analysis Optimization
文章类型Article
WOS标题词Science & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1002/ep.12365
收录类别SCI
语种英语
关键词[WOS]COAL FLY-ASH ; CO2 MINERAL SEQUESTRATION ; FISCHER-TROPSCH SYNTHESIS ; VACUUM SWING ADSORPTION ; ACTIVATED CARBON ; STEELMAKING SLAG ; CALCIUM-CARBONATE ; H3PO4 ACTIVATION ; TRACE-ELEMENTS ; GAS SEPARATION
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS类目Engineering, Environmental ; Engineering, Chemical ; Engineering, Industrial ; Environmental Sciences
WOS记录号WOS:000384044300019
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21622
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Joondalup, WA 6027, Australia
2.Chinese Acad Sci, Natl Engn Lab Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
3.Monash Univ, Dept Chem Engn, Monash, Vic 3800, Australia
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Sun, Yong,Zhang, Jing Ping,Zhang, Lian. NH4Cl selective leaching of basic oxygen furnace slag: Optimization study using response surface methodology[J]. ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY,2016,35(5):1387-1394.
APA Sun, Yong,Zhang, Jing Ping,&Zhang, Lian.(2016).NH4Cl selective leaching of basic oxygen furnace slag: Optimization study using response surface methodology.ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY,35(5),1387-1394.
MLA Sun, Yong,et al."NH4Cl selective leaching of basic oxygen furnace slag: Optimization study using response surface methodology".ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY 35.5(2016):1387-1394.
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