کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6764323 | 1431579 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanical and reduction characteristics of cold-pressed copper slag pellets composited within biomass and lignite
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
As a new reducer, biomass was tested as an alternative to coal in copper slag pelleting process by cold pressed preparation method. As two kinds of reducer, biomass and lignite were used in this paper. Without binder addition, the compressive strength of lignite pellets remained in the range of 44â¯N-75â¯N under experimental conditions. Compared with lignite, biomass provided higher reduction ratio and higher compressive strength. Fiber structure of biomass increased surface area and strengthened adhesive force of composite pellets. Compressive strength of biomass composite pellet was much higher than lignite composite pellets and remained steady between 2093N and 2246â¯N with the variation of pressure and CaO addition ratio when C/O was 1.0. Using biomass as reducer, reduction mechanism of copper slag was established. The reduction experiments showed that in the reduction reaction process, metallic iron outflowed from cracks in pellet and it was in the formation of sphere under the effect of surface tension. And the 'sweating metallic iron' reduced by biomass distributed more homogeneously than by lignite. When the temperature was above 1423â¯K, reduction ratio of copper slag was higher than 0.9. And reduction ratio reached a peak when CaO addition ratio was 0.3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 125, September 2018, Pages 206-224
Journal: Renewable Energy - Volume 125, September 2018, Pages 206-224
نویسندگان
Zongliang Zuo, Qingbo Yu, Huaqing Xie, Kun Wang, Sihong Liu, Fan Yang, Qin Qin, Zhenfei Qi,