研究砷（As₂O₃）的Na₂S堿性浸出,以及用Fe₂（SO₄）₃沉淀砷。采用基于中心組合設(shè)計(jì)的響應(yīng)面法對相關(guān)因素的影響進(jìn)行定量和定性分析,提出用于參數(shù)優(yōu)化的統(tǒng)計(jì)模型。結(jié)果表明,在Na₂S濃度100 g/L,固液比0.163 g/mL和溫度80℃的最優(yōu)預(yù)測條件下,89%的砷可從煙灰中去除。研究發(fā)現(xiàn),固液比和Na₂S濃度是影響浸出過程的顯著因素。在沉淀過程中,當(dāng)pH為4.8、Fe³⁺與砷的摩爾比和H₂O₂與砷的摩爾比分別為5:1和4:1時,浸出液中99.93%以上的砷以無定形砷酸鐵的形式被除去。Fe³⁺與砷的摩爾比和pH值為最顯著因素,而且他們之間的相互作用也是顯著的。 

【文章來源】：Transactions of Nonferrous Metals Society of China. 2020,30(06)EISCICSCD

【文章頁數(shù)】：13 頁

【文章目錄】：
1 Introduction
2 Experimental
    2.1 Dust and reagents
    2.2 Procedure
        2.2.1 Alkali leaching
        2.2.2 Precipitation
    2.3 Experimental design
3 Results
    3.1 Models fitting
    3.2 Study of interactions among factors
    3.3 Optimization of factors in arsenic leaching and precipitation processes
4 Discussion
5 Conclusions


【參考文獻(xiàn)】：
期刊論文
[1]Industrial experiment of copper electrolyte purification by copper arsenite[J]. 鄭雅杰,肖發(fā)新,王勇,李春華,許衛(wèi),簡洪生,馬玉天.  Journal of Central South University of Technology. 2008(02)



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