有色金属科学与工程2026，Vol.17Issue(1)：56-64,9.DOI:10.13264/j.cnki.ysjskx.2026.01.007
乙酸浸出高炉渣水热合成沸石分子筛
Synthesis of zeolite molecular sieve by acetic acid leaching from blast furnace slag combined with the hydrothermal method
摘要
Abstract
To enhance and utilization silicon and aluminum components in blast furnace slag,zeolite molecular sieves were synthesized through a hydrothermal method.This approach employed acetic acid-leaching blast furnace slag as the source of silicon and aluminum.By integrating X-ray diffraction and scanning electron microscopy with energy dispersive spectroscopy,the effects of the silicon-to-aluminum molar ratio,crystallization duration and crystallization temperature on zeolite synthesis were investigated.The results indicate that A-type zeolite can be synthesized in a regular cubic shape following crystallization at 100℃for 8 hours,provided that the n(Si)/n(Al)is maintained between 0.50 and 1.25.Suppose the crystallization time is excessively prolonged or the crystallization temperature is elevated beyond optimal levels.In that case,it may lead to the coarsening of zeolite grains,thereby diminishing their adsorption and catalytic efficacy.When n(Si)/n(Al)is 1.00,and both crystallization time and crystallization temperature are maintained at 8 h and 100℃,respectively,the synthesized A-type zeolite exhibits optimal adsorption performance.Through Brunauer-Emmett-Teller and nitrogen adsorption tests,as well as Cu2+adsorption experiments,it is confirmed that the A-type zeolite synthesized under these conditions exhibits a larger specific surface area,enhanced nitrogen adsorption performance,and optimal Cu2+adsorption capacity in solution.This further substantiates the optimal synthesis conditions for A-type zeolite.When the dosage of zeolite is set at 8 g/L,the adsorption rate for Cu2+reaches 81.82%.Furthermore,if the crystallization temperature is maintained at 90℃,it is necessary to extend the crystallization time to 10 h in order to synthesize A-type zeolite with comparable properties.关键词
高炉渣/A型沸石/乙酸浸出/水热法/资源化利用Key words
blast furnace slag/A-type zeolite/acetic acid leaching/hydrothermal method/resource utilization分类
矿业与冶金引用本文复制引用
吕馨悦,邱家用,吕逸飞,郭秋月,赵经宇,祁德兴,李铮,文应江..乙酸浸出高炉渣水热合成沸石分子筛[J].有色金属科学与工程,2026,17(1):56-64,9.基金项目
江苏省大学生创新创业训练计划重点项目(202310289012Z) （202310289012Z）
江苏省大学生创新创业训练计划项目(202410289173Y) （202410289173Y）
江苏省教育厅2023年研究生科研与实践创新项目(KYCX23_3871) （KYCX23_3871）
