کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1599206 | 1005080 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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![عکس صفحه اول مقاله: Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin Study on experiment and mechanism of thermal dissolved sulfuration of low grade lead-zinc oxide ore in lanpin](/preview/png/1599206.png)
چکیده انگلیسی
The thermal dissolved sulfuration technology is brought forward and performed based on the characteristic of low grade lead-zinc oxide ore in lanpin. Using sulfur as the sulphidizing agent in the experiment, the oxides in the sandstone and ignimbrite are changed into sulfides. The disproportionation reaction of sulfur in a solution is confirmed as 4S+3H2O=2S2â+S2O2â3+6H+. The dynamics process is studied and the first-order reaction rate equation -1n(1-α)=ktt is obtained. The effects of the reactive products, stirring speed, dosage of sulfuration agent, value of pH and sulphidizing temperature on the sulfuration of oxide ore are investigated. The results indicate that the reactive apparent activation energy is 100.8 kJ/mol and the sulfuration ratio of lead-zinc oxide ore reaches 60% under the conditions of pH 5.9-7.5, the sulfuration temperature of 130 °C, sulfuration time of 180 min and the stirring speed of 800 r/min.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Metallurgica Sinica (English Letters) - Volume 22, Issue 4, August 2009, Pages 291-296
Journal: Acta Metallurgica Sinica (English Letters) - Volume 22, Issue 4, August 2009, Pages 291-296
نویسندگان
Minghua JIANG, Bin YANG, Jijun WU, Yuchun ZHAI, Yang ZHOU,