| 焙烧对伊利石在酸中溶解行为的影响 |
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| 引用本文： | 何东升,冯其明,张国范,龙思思,欧乐明,卢毅屏.焙烧对伊利石在酸中溶解行为的影响[J].中南大学学报(自然科学版),2011,42(6). |
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| 作者姓名： | 何东升 冯其明 张国范 龙思思 欧乐明 卢毅屏 |
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| 作者单位： | 1. 武汉工程大学环境与城市建设学院,湖北武汉,430073;中南大学资源加工与生物工程学院,湖南长沙,410083
2. 中南大学资源加工与生物工程学院,湖南长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目，武汉工程大学科学研究基金资助项目 |
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| 摘 要： | 采用热分析(TG-DSC)、红外光谱(FTIp)和X线衍射(XRD)等手段，考察伊利石在焙烧过程中的晶体结构变化规律;通过焙烧后伊利石在硫酸溶液中的溶解实验，研究伊利石中Al，K和Si焙烧前后的溶出率变化。研究结果表明：焙烧促使伊利石晶体结构中四面体和八面体结构发生调整和变形，从而使八面体中Al元素赋存的化学环境发生变化，溶出活性显著增强，在H2SO4浓度为3 mol/L、温度为95℃、液固比为5/1 mL/g，转速为600 r/min条件下焙烧，Al在等体积的溶出液中，浓度由77.56 mmol/L提高到203.90 mmol/L。
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| 关 键 词： | 伊利石 焙烧 铝 溶出 |
Effect of roasting on dissolution behavior of illite in acid solution |
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| HE Dong-sheng,FENG Qi-ming,ZHANG Guo-fan,LONG Si-si,OU Le-ming,LU Yi-ping.Effect of roasting on dissolution behavior of illite in acid solution[J].Journal of Central South University:Science and Technology,2011,42(6). |
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| Authors: | HE Dong-sheng FENG Qi-ming ZHANG Guo-fan LONG Si-si OU Le-ming LU Yi-ping |
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| Institution: | HE Dong-sheng1,2,FENG Qi-ming2,ZHANG Guo-fan2,LONG Si-si2,OU Le-ming2,LU Yi-ping2 (1.School of Environment and Urban Construction,Wuhan Institute of Technology,Wuhan 430073,China,2.School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China) |
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| Abstract: | The crystal structure variation of illite in roasting process was investigated with thermal analysis(TG-DSC),infra-red spectrum(FTIR) and X-ray diffraction(XRD),and dissolution behavior of Al,K and Si in roasted illite was studied by dissolution experiments.The results indicate that roasting treatment deforms and adjusts the structural of tetrahedron and octahedron,which weakens the binding force of Al,K and Si and strengthens their dissolution abilities in acid solution.Compared with unroasted illite,Al in... |
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| Keywords: | illite roasting Al stripping |
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