Removal of Fluoride and Chloride from Zinc Oxide Dust
首发时间:2013-02-05
Abstract:Removal of fluoride and chloride from zinc oxide dust from ausmelt furnace were investigated using alkaline washing. The results show that F removal efficiency increase with an increase of alkaline concentration, alkaline washing temperature and time, but Cl removal efficiency as opposed to F removal efficiency. The L/S ratio has little effect on F and Cl removal efficiency. A new flowsheet for removal of fluoride and chloride from the secondary zinc resource was successfully proposed according to the results. F and Cl removal efficiency are more than 53.68% and 63.18% respectively using the flowsheet under optimum parameters of temperature 60 - 70 ℃, L/S ratio 3:1 and alkaline washing time 1.5h.
keywords: Zinc oxide dust Alkaline washing Fluoride Chloride Flowsheet
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