摘要
膨润土已经被许多国家确定为高放废物深地质处置系统的缓冲/回填材料。钠-蒙脱石作为钠基膨润土的主要矿物,对钠基膨润土的地球化学稳定性能起着关键作用。以地球化学模拟软件PHREEQC和GWB为平台,对内蒙古高庙子膨润土的关键矿物——钠-蒙脱石在无氧和不同温度条件下的地球化学行为进行了模拟研究,分析了钠-蒙脱石在北山地下水体系中矿物成分、液相化学成分、pH值的长期演变规律。
Bentonite has been internationally recognized as buffer and backfill material of high-level radioactive waste（HLW）repository.Na-montmorillonite,as the dominated mineral of Bentonite,plays an important role in geochemical stability of Na-bentonite.In this paper,the geochemical evolution of Namontmorillonite in Beishan groundwater under anaerobic condition was studied at different temperature by using geochemical software PHREEQC and GWB.The evolution of key parameters,including secondary minerals,chemical composition and pH of solution,were investigated.
出处
《铀矿地质》
CAS
CSCD
2016年第4期246-250,共5页
Uranium Geology
