|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Minerals Extraction and Processing
||Working Experience with the New WOX Plant to Treat Zinc Waelzoxide at ZGH Boleslaw SA, Poland
||Angel Selke, Leszek Stencel, Miroslaw Fatyga, Bogdan Pieczonka, Lukasz Zieba
|On-Site Speaker (Planned)
The new facility for washing and leaching of 100.000 tpy of WOX (zinc waelzoxide) with a high content of chlorine and fluorine, was put into service at the end of March 2013. The process technology of removing chlorine and fluorine is made of two stages of continuous washing. The first step - is a counter-current washing of WOX at atmospheric pressure and the second stage is the high pressure washing. Second stage washing is carried out at the pressure of about 2 bar and temperature 120 ░C, in an autoclave. The next step of the process is leaching of washed WOX with spent electrolyte coming as a feedback from existing Cell House. After separation and filtration the zinc sulphate solution is directed to the existing neutral leaching section. The final level of chlorine and fluorine are Cl <0.005%, and F <0.01%.
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