کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1744466 1522139 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extraction of Al and K salts from associated alunite tailings by an acid calcination-water leaching method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Extraction of Al and K salts from associated alunite tailings by an acid calcination-water leaching method
چکیده انگلیسی
An acid calcination-water leaching method was developed to treat associated alunite tailings due to their high mass fraction of potassium and aluminum and simple crystalline phase composition. When the tailings first are calcined at 300 °C by 30% H2SO4 solution with the liquid-solid ratio of 2:1 and then leached at 80 °C aqueous solution with the liquid-solid ratio of 10:1, the leaching efficiency of aluminum and potassium is 87.2% and 85.3%, respectively. Based on the crystallochemistry principle, a multi-step crystallization method was devised to separate potassium and aluminum salts preliminarily, and aluminum sulfate and alum crystal with high purity were obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 107, 16 November 2015, Pages 786-792
نویسندگان
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