響應曲面法優化Na<sub>2</sub>S-NaOH體系浸出硫酸燒渣中的砷

王永良; 肖力; 付國燕; 劉婭; 韓培偉; 錢鵬; 葉樹峰; 陳運法

doi:10.13374/j.issn2095-9389.2018.09.003

響應曲面法優化Na₂S-NaOH體系浸出硫酸燒渣中的砷

doi: 10.13374/j.issn2095-9389.2018.09.003

王永良¹,
肖力^1,2,
付國燕^1,2,
劉婭^1,2,
韓培偉¹,
錢鵬¹,
葉樹峰^1, ,,
陳運法¹

1) 中國科學院過程工程研究所多相復雜系統國家重點實驗室, 北京 100190
2) 中國科學院大學化學與化工學院, 北京 100049

基金項目:

國家高技術研究發展計劃資助項目(2011AA06A104)

十二五國家科技支撐計劃資助項目(2012BAB08B04)

詳細信息

中圖分類號: TD98
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出版歷程
- 收稿日期: 2017-09-12

Arsenic removal from pyrite cinders in Na₂S-NaOH solution with parameters optimized using the response surface methodology

1) State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
2) School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 硫酸燒渣作為重要的二次資源,除砷有利于提高燒渣的價值.針對某含砷硫酸燒渣預處理脫砷的問題,采用Na₂S-NaOH體系浸出燒渣中的砷.首先采用單因素試驗確定Na₂S和NaOH的藥劑用量范圍,進而采用響應曲面法優化浸出工藝參數.結果顯示,響應曲面法優化Na₂S-NaOH體系中浸出砷的模型顯著,Na₂S、NaOH和溫度均對砷的浸出有著重要影響,且溫度越高越有利于砷的浸出,Na₂S和NaOH之間存在明顯的交互作用,在80℃、NaOH濃度為0.34 mol·L^-1、Na₂S濃度為0.12mol·L^-1時,浸出后燒渣中的砷質量分數可以降低到0.08%.
- 硫酸燒渣 /
- 砷 /
- 響應曲面 /
- 浸出 /
- 預處理
Abstract: Pyrite cinder is one of the important secondary resources; however, the arsenic typically contained in pyrite cinder is harmful to metallurgical process. The removal of arsenic can improve the value of pyrite cinders. Thus, a pretreatment method for removal of arsenic from pyrite cinders using a Na₂S-NaOH solution was investigated in this paper. A single factor experiment was conducted to determine the appropriate concentration ranges of NaOH and Na₂S, and then the response surface methodology (RSM) was used to optimize the leaching parameters. The results indicate that the optimized RSM model is reliable. The temperature, NaOH concentration, and Na₂S concentration have significant effects on the arsenic removal. The higher temperature is found to be favorable to the leaching of arsenic, and a significant interaction is found between the concentrations of NaOH and Na₂S. The content of arsenic in the leaching slag can be reduced to 0.08% at 80℃ when the concentration of NaOH and Na₂S is 0.34 and 0.12 mol·L^-1, respectively.
- pyrite cinder /
- arsenic /
- response surface methodology /
- leaching /
- pretreatment

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參考文獻(6)

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