中文摘要：

为了探讨酵母菌吸附Sr^2＋后沉淀物的处理及Sr^2＋浓缩条件,在不同焚烧温度和不同焚烧时间下对絮凝后的样品进行焚烧处理,同时对焚烧产物进行了X射线衍射（XRD）、X射线荧光光谱（XRF）、扫描电镜-能谱（SEM-EDS）、热重（TG-DTG）分析;并对焚烧产物中的Sr^2＋进行了进一步的酸浸提取、浓缩。研究结果显示：焚烧温度1 200℃,焚烧时间1.0h,样品减容率和减量率分别为92.9%和91.0%;生成了较为稳定的Al2O3、AlPO4、Sr5Al2O8等主要物质;TG-DTG分析显示样品热解温度主要集中在800℃以下,质量损失约达90.0%;在硝酸浓度为3 mol/L、固液比为1∶75、浸取时间为60 min的条件下,Sr^2＋的浸取率为98.1%,浓缩率为86.1%。

英文摘要：

In order to investigate the treatment of yeast precipitate after the adsorption of Sr^2＋and the secondary use of Sr^2＋,the flocculate was burned under different burning temperature and burning time,then the products of incineration were analyzed through X-ray diffraction（XRD）,X-ray fluorescence（XRF）,scanning electron microscope/energy dispersion spectrum（SEM-EDS）and thermal gravity（TG-DTG）.The burning products of Sr^2＋were further dealt with acid leaching extraction and concentration.The results show that：the temperature is 1 200℃;the incineration time is 1.0h;the sample volume reduction ratio and quality reduction ratio are 92.9% and 91.0% respectively.The burning products are mainly composed of Al2O3,AlPO4,Sr5Al2O8.When the pyrolysis temperature is mainly concentrated below 800 ℃,the quality loss ratio is about as high as 90.0%.In the experiment of nitrate leaching Sr^2＋,when the nitric acid concentration is 3mol/L and the leaching time is 60 min,the leaching rate of Sr^2＋is 98.1%,and the concentration ratio is 86.1%.