کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4769270 1425533 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Leaching magnesium oxide in boron mud by water with pressurized CO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Leaching magnesium oxide in boron mud by water with pressurized CO2
چکیده انگلیسی
In the process of leaching magnesium oxide by water containing CO2, the obtained concentration is normally only 5 g/L to 12 g/L. To obtain concentrated magnesic leaching liquor from boron mud, pressurized dissolution processes were investigated under various CO2 pressures from 1 MPa to 5 MPa, as well as ratios of solid to liquid, stirring speeds and leaching temperatures, which significantly influenced the leaching of magnesium oxide. And the concentration of MgO in the solution was achieved as high as 26.63 g/L with MgO leaching efficiency of 38.80% under the condition of CO2 pressure 5 MPa, solid/liquid ratio 0.18, stirring speed 500 rpm, leaching temperature 50 °C, and leaching time 1.5 h, meanwhile, the impurity concentrations of CaO, B, Fe, Al and Si were 0.16 g/L, 0.11 g/L, 0.23 g/L, 0.01 g/L and 0.06 g/L, respectively. The magnesium oxide leaching method by pressurized carbonated water is applicable for treating with other materials rich in magnesium hydrate or magnesium oxide, such as calcined magnesite, dolomite and boron mud by CO2-soda process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 171, August 2017, Pages 142-148
نویسندگان
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