Dissolution of Ausmelt Smelting Flue Dust in Alkaline Solution
Received:April 05, 2017   Revised:April 10, 2017   Accepted:April 12, 2017      Published Online:August 21, 2017
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DOI:doi:10.3969/j.issn.1007-7545.2017.09.003
KeyWord:Ausmelt smelting; flue dust; dissolution; alkaline solution
                 
AuthorInstitution
WANG Shao-yu 武汉科技大学 钢铁冶金及资源利用教育部重点实验室
QIN Qing-wei 武汉科技大学 钢铁冶金及资源利用教育部重点实验室
WU Xing-lin 武汉科技大学 钢铁冶金及资源利用教育部重点实验室
LIU Zhen-wei 武汉科技大学 钢铁冶金及资源利用教育部重点实验室
LIU Wen-ke 武汉科技大学 钢铁冶金及资源利用教育部重点实验室
LIAO Guang-dong 湖北大江环保科技股份有限公司
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Abstract:
      Dissolution of Ausmelt smelting flue dust in mixture solution of sodium hydroxide and sodium sulfide was studied. Effects of NaOH concentration, Na2S dosage, reaction temperature, reaction time, and L/S on leaching of As, Sb, Pb, Zn were investigated. Leaching rates of As, Sb, Pb and Zn are 91.88%, 21.04%, 0.57%, and 12.95% respectively under the optimum conditions including concentration of sodium hydroxide of 2 mol/L, mass ratio of Na2S/dust of 2 g/10 g, reaction temperature of 90 ℃, reaction time of 1.5 h, L/S=6/1, and stirring speed of 300 r/min. Selective leaching of arsenic is realized.
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