| 煤系高岭土制备氧化铝联产白炭黑工艺 |
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| 引用本文： | 伍泽广,刘钦甫,张印民,郑启明,余雄威.煤系高岭土制备氧化铝联产白炭黑工艺[J].湖南科技大学学报(自然科学版),2011(4). |
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| 作者姓名： | 伍泽广 刘钦甫 张印民 郑启明 余雄威 |
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| 作者单位： | 中国矿业大学(北京)地球科学与测绘工程学院;湖南科技大学化学化工学院; |
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| 基金项目： | “十一五”国家科技支撑计划项目(2009BAB49B02); 国家自然科学基金重点项目(51034006) |
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| 摘 要： | 以煤系高岭土为原料,采用预脱硅碱石灰烧结法制备氧化铝和白炭黑粉体,考察了煤系高岭土的活化温度、液固比、氢氢氧化钠浓度、反应时间和温度等因素对脱硅率的影响,确定了适宜的工艺条件.运用X射线荧光分析(XRF)、X射线粉末衍射分析(XRD)、扫描电镜分析(SEM)、热重同步分析(DSC/TGA)等对原料和制品进行了表征.研究结果表明,制备的氧化铝粉体经800℃焙烧后为无定形γ–Al2O3,呈轻质多孔的蓬松纤维状,孔径为20～50 nm;白炭黑的颗粒之间形成三维网状结构,其内部疏松多孔,颗粒粒径为100 nm.
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| 关 键 词： | 煤系高岭土 氧化铝 碱石灰烧结法 表征 |
Co-production of alumina and silica from coal-bearing kaolin |
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| WU Ze-guang,LIU Qin-fu,ZHANG Yin-min,ZHENG Qi-ming,YU Xiong-wei.Co-production of alumina and silica from coal-bearing kaolin[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2011(4). |
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| Authors: | WU Ze-guang LIU Qin-fu ZHANG Yin-min ZHENG Qi-ming YU Xiong-wei |
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| Institution: | WU Ze-guang1,2,LIU Qin-fu1,ZHANG Yin-min1,ZHENG Qi-ming1,YU Xiong-wei1(1.School of Geoscience and Surveying Engineering,China University of Mining and Technology,Beijing 100083,China,2.School of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China) |
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| Abstract: | The alumina and silica powders were prepared by the pre-delsilicon and alkali-lime-calcined method,using the coal-bearing kaolin as raw material.The activation temperature of coal-bearing kaolin,the operation parameters of solid-liquid ratio,concentration of sodium hydroxide,reaction temperature and time were investigated,and the optimum conditions were obtained.The raw material and products were characterized by X-ray fluorescence analysis(XRF),X-ray diffraction(XRD),scanning electron microscopy(SEM),therm... |
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| Keywords: | coal-bearing kaolin alumina alkali-lime-calcined method characterize |
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