Author:
Qi Nie,Yong Cheng,Ping Lu,Hanping Zhang,Cong Liu
Abstract
Abstract
In order to recover the valuable selenium in a pyrite smalter which contain 2.18% selenium, 0.18% copper, 0.75% zinc and 45.87% iron, contains this paper many tests were conducted and finally determined flotation as a suitable method. Satisfying results were obtained under the following flotation conditions: grinding fineness was 95% of -0.037mm and the flowsheet including one stage roughing, one stage cleaning and two stage scavenging. In addition, sulfuric acid was used as pH modifier, sodium silicate and sodium hexametaphosphate were used as depressants. According the test results, the flotation concentrate contains 7.254% selenium with recovery 80.60%, only 0.409% selenium contain in tailings, meanwhile mercury and siliver are recovered as by-products, the bulk concentrate contain 987.35g/t mercury, 1025.10g/t siliver.
Reference7 articles.
1. Removal of Hg, As and Se ions from gold cyanide leach solutions by dissolved air flotation;Tesssele;Minerals engineering,1998
2. Development of a selective and sensitive flotation method for determination of trace amounts of cobalt, nickel, copper and ion in environmental samples;Karimi;Journal of hazardous materials,2008
3. Comparative bioavailability of selenium to aquatic organisms after biological treatment og agricultural drainage water;Amweg;Aquatic toxicology,2003
4. Development of surfactant assisted spectrophotometric method for determination of selenium in waste water samples;Agrawal;Journal of hazardous materials,2009
5. Selenium content in seed, oil, and oil cake of Se hyperaccumulated Brassica juncea(India mustard) cultivated in a seleniferous region of India;Sumit;Food chemistry,2012