Optimization on selenium and arsenic conversion from copper anode slime by low-temperature alkali fusion process
作者: Xue-yi GuoZhi-peng XuQing-hua TianDong Li
作者单位: 1Central South University
2Hunan Engineering Research Center of Nonferrous Metals Resource Recycling
刊名: Journal of Central South University, 2017, Vol.24 (7), pp.1537-1543
来源数据库: Springer Journal
DOI: 10.1007/s11771-017-3558-x
关键词: OptimizationLow-temperature alkali fusionCopper anode slimeSeleniumArsenicCentral composite design
英文摘要: A process was proposed to convert and separate selenium and arsenic in copper anode slime (CAS) by low-temperature alkali fusion process. Central composite design was employed to optimize the effective parameters, in which NaOH/CAS mass ratio, fusion temperature and fusion time were selected as variables, and the conversion ratio of selenium and arsenic as responses. Second-order polynomial models of high significance and 3D response surface plots were constructed to show the relationship between the responses and the variables. Optimum area of >90% selenium conversion ratio and >90% arsenic conversion ratio was obtained by the overlaid contours at NaOH/CAS mass ratio of 0.65-0.75, fusion temperature of 803-823 K and fusion time of 20-30 min. The models are validated by experiments in the...
原始语种摘要: A process was proposed to convert and separate selenium and arsenic in copper anode slime (CAS) by low-temperature alkali fusion process. Central composite design was employed to optimize the effective parameters, in which NaOH/CAS mass ratio, fusion temperature and fusion time were selected as variables, and the conversion ratio of selenium and arsenic as responses. Second-order polynomial models of high significance and 3D response surface plots were constructed to show the relationship between the responses and the variables. Optimum area of >90% selenium conversion ratio and >90% arsenic conversion ratio was obtained by the overlaid contours at NaOH/CAS mass ratio of 0.65-0.75, fusion temperature of 803-823 K and fusion time of 20-30 min. The models are validated by experiments in the...
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影响因子:0.434 (2012)

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关键词翻译
关键词翻译
  • slime 淤泥
  • arsenic 
  • fusion 融解
  • selenium 
  • temperature 温度
  • ratio 
  • anode 阳极
  • conversion 转换
  • alkali 
  • relationship 关系