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首页> 外文期刊>High temperature materials and processes >Preparation of Granular Red Mud Adsorbent using Different Binders by Microwave Pore - Making and Activation Method
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Preparation of Granular Red Mud Adsorbent using Different Binders by Microwave Pore - Making and Activation Method

机译:微波孔活化法制备不同粘结剂的颗粒赤泥吸附剂。

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摘要

In this work, microwave energy is used for preparing a granular red mud (GRM) adsorbent made of red mud with different binders, such as starch, sodium silicate and cement. The effects of the preparation parameters, such as binder type, binder addition ratio, microwave heating temperature, microwave power and holding time, on the absorption property of GRM are investigated. The BET surface area, strength, pore structure, XRD and SEM of the GRM absorbent are analyzed. The results show that the microwave roasting has a good effect on pore-making of GRM, especially when using organic binder. Both the BET surface area and the strength of GRM obtained by microwave heating are significantly higher than that by conventional heating. The optimum conditions are obtained as follows: 6:100 (w/w) of starch to red mud ratio, microwave roasting with a power of 2.6 kW at 500℃ for holding time of 30 min. The BET surface area, pore volume and average pore diameter of GRM prepared at the optimum conditions are 15.58 m~2/g, 0.0337 cm~3/g and 3.1693 A~o, respectively.
机译:在这项工作中,微波能被用于制备由赤泥与不同粘合剂(例如淀粉,硅酸钠和水泥)制成的粒状赤泥(GRM)吸附剂。研究了粘合剂类型,粘合剂添加比例,微波加热温度,微波功率和保持时间等制备参数对GRM吸收性能的影响。分析了GRM吸收剂的BET表面积,强度,孔结构,XRD和SEM。结果表明,微波焙烧对GRM的造孔有很好的效果,特别是在使用有机粘结剂时。通过微波加热获得的BET表面积和GRM强度均显着高于通过常规加热获得的BET表面积和GRM强度。最佳条件如下:淀粉与赤泥的比例为6:100(w / w),在500℃下以2.6 kW的功率进行微波烘焙,保持时间为30分钟。在最佳条件下制备的GRM的BET表面积,孔体积和平均孔径分别为15.58 m〜2 / g,0.0337 cm〜3 / g和3.1693 A〜o。

著录项

  • 来源
    《High temperature materials and processes》 |2016年第4期|407-415|共9页
  • 作者单位

    Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650093, China, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China;

    Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China;

    Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650093, China, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China;

    Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;

    Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;

    Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;

    Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;

    Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650093, China, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    red mud; microwave heating; adsorbent; pore size distribution;

    机译:红泥微波加热;吸附剂孔径分布;

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