کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4769271 | 1425533 | 2017 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Recovery and separation of gallium(III) and germanium(IV) from zinc refinery residues : Part II: Solvent extraction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The extraction of both Ga(III) and Ge(IV) was achieved using an organic system consisting of tri(octyl-decyl) amine (N235), tributyl phosphate (TBP) in sulfonated kerosene from iron-removed leach solution. The extraction equilibria of both metals were obtained within 10 min at 30 °C. More than 99.0% Ga(III) and 99.8% Ge(IV) were extracted in a three-stage counter current extraction using an organic system consisting of 20% (v/v) N235, 10% (v/v) TBP and 70% (v/v) sulfonated kerosene at an A/O ratio of 3:1 and 30 °C for 10 min. Over 99.0% Ga(III) was selectively stripped from the loaded organic solution by three-stage counter current stripping using 2.5 mol/L H2SO4 at an A/O ratio of 1:2 and 30 °C for 15 min, resulting in a loaded strip liquor containing 3.8 g/L Ga(III). After Ga(III) stripping, 99.8% Ge(IV) was stripped by two-stage counter current stripping using 4 mol/L NaOH at an A/O ratio of 1:3 and 40 °C for 15 min, resulting in a final loaded strip liquor containing 8.3 g/L Ge(IV). A conceptual flowsheet has been developed to recover Ga(III) and Ge(IV) from zinc refinery residues using two-stage leaching with H2SO4 and oxalic acid, subsequently, iron removal with iron powder and solvent extraction with N235 and TBP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 171, August 2017, Pages 149-156
Journal: Hydrometallurgy - Volume 171, August 2017, Pages 149-156
نویسندگان
Fupeng Liu, Zhihong Liu, Yuhu Li, Benjamin P. Wilson, Zhiyong Liu, Li Zeng, Mari Lundström,