نوع مقاله : علمی - پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد فرآوری مواد معدنی دانشگاه صنعتی امیرکبیر
2 دانشجوی فرآوری مواد معدنی، دانشکده فنی و مهندسی، دانشگاه بینالملی امام خمینی قزوین
3 استادیار بخش معدن، دانشکده فنی و مهندسی، دانشگاه زنجان
4 کارشناس شرکت مهندسی و تحقیقاتی فلزات غیر آهنی،زنجان
5 دانشگاه تربیت مدرس
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Abstract This paper examines the main factors affecting transport of toxic elements from waste of leaching of Zinc leaching plant to the environment, during which behavior and solubility of heavy metals and toxic levels of Zn, Ni, Co, Cd, Mn and Pb in column leaching were investigated. Parameters included: flow rate, pH of input solution and leaching time. Filter cake highest solubility leaching was found at flow rate = 1×10-6 m3/min, pH = 5 and time = 20 days. A multiple regression analysis was applied to identify the effective parameters. Leaching time was the dominant factor on transport of toxic elements to the environment. A geostatistical commercial software called SPSS 15 was used to relate dissolution percent to flow rate, pH and leaching time. Critical situation in which toxic elements would be transported from Zinc leaching plant were determined. Key Words: toxic elements, Zinc leaching plant, Leaching filter cake, Column leaching
کلیدواژهها [English]