کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
213079 | 462079 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanochemical leaching of refractory zinc silicate (hemimorphite) in alkaline solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
A process was developed for extracting zinc from refractory zinc silicate (hemimorphite) by mechano-chemical leaching in sodium hydroxide solution with calcium oxide added to inhibit the leaching of silica. The effects of mechanical activation, calcium oxide dosage, temperature, leaching time, liquid–solid ratio and sodium hydroxide concentration were investigated. The dissolution of silica was considerably inhibited by adding CaO, but zinc extraction was almost unchanged. Under optimum conditions in 4.5 mol/L NaOH and twice the stoichiometric CaO at 383 K, the dissolution of Zn and SiO2 were 93.6% and 7.3%, respectively, after 1 h using a liquid–solid ratio (L/S) of 10:1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 99, Issues 3–4, November 2009, Pages 255–258
Journal: Hydrometallurgy - Volume 99, Issues 3–4, November 2009, Pages 255–258
نویسندگان
Zhongwei Zhao, Shuang Long, Ailiang Chen, Guangsheng Huo, Honggui Li, Xijun Jia, Xingyu Chen,