(1. 桂林理工大学 化学与生物工程学院，广西有色金属隐伏矿床勘查及材料开发协同创新中心，桂林 541004；
2. 广西环境应急与事故调查中心，南宁 530028；
3. 广西壮族自治区固体废物管理中心，南宁 530028)
摘 要: 采用两种不同的活化方式对锡矿尾矿进行活化，活化矿料不需要添加其他额外硅源和铝源，在相同的活化碱量条件下，分别制备出不同硅铝比的ZSM-5分子筛产物，并以XRD、SEM、ICP、BET、NH3-DRIFTS等多种物理化学手段对所得产物进行表征。结果表明：当活化碱量均为1.2时，高温碱融活化法(F-R)可制备出硅铝比为28.10的类球形ZSM-5产物，其相对结晶度可达到101.3%，收率为64.4%，比表面积相对较高(445 m2/g)；而采用低温碱溶液活化法(LS-R)可制备出高硅铝比(90.29)的形貌规整ZSM-5产物，其相对结晶度更高(达到123.9%)，但收率和比表面积相对小(分别为52.6%和404 m2/g)；两种活化方式所得产物均含有B酸和L酸，但高温碱融活化法所得产物的B酸量更多，并且高温碱融活化法制备产物对尾矿中各主要元素利用率均高于低温碱溶液活化法。本工作表明，有色金属锡矿尾矿可实现高附加值资源化及减量化利用。
关键字: 锡矿尾矿；活化；合成；ZSM-5
（1. College of Chemistry and Bioengineering, Guilin University of Technology, Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, Guilin 541004, China;
2. Guangxi Environment Emergency and Accident Investigation Center; Nanning 530028, China;
3. Guangxi Solid Waste Management Center, Nanning 530028, China）
Abstract:ZSM-5 with different SiO2/Al2O3 mole ratio were synthesized from tin tailings without adding any other Si and Al source, and the tin tailings were activated by two different activation methods using the same content of activation alkaline. The product were characterized by XRD, SEM, ICP, BET and NH3-DRIFTS. And the results showed that spherical ZSM-5 product with relative crystallinity of 101.3%, specific surface area of 445 m2/g, SiO2/Al2O3 mole ratio of 28.10 and yield of 64.35% was prepared by the high-temperature alkali melt activation (F-R), and rounded shape ZSM-5 product with with relative crystallinity of 123.9%, specific surface area of 404 m2/g, SiO2/Al2O3 mole ratio of 90.29 and yield of 52.6% was prepared by the low temperature alkali solution activation when the content of activation alkaline was 1.2. Meanwhile, the product obtained from the two different activation methods all had B acid center and L acid center，and the product obtained from F-R activation method had much B acid center than that of the product obtained from LS-R activation method. Meanwhile, the utilization rate of the products prepared by F-R activation method was higher than that of the products prepared by LS-R activation method. On the whole, both activation methods can be used to recycle and reduce of the nonferrous metal tin tailings with high adding value.
Key words: tin tailings; activation; synthesis; ZSM-5
