新疆区域铀矿地球物理场特征分析

本文试图通过地面γ、航空γ、重力、航磁测量等物探资料的综合研究,对新疆区域铀矿地球物理场特征提出一些初步认识。一、地质概况新疆地层出露比较齐全,自最老的太古代至最新的第四系均有出露。纵观全疆的地层,除第四系外,分布最广的为第三系和石炭系,它们的面积分别为17.8万和17.2万平方公里。出露最少的太古代只有2855平方公里。     

天然气中稀有气体同位素

A hundred natural gas samples of different geological.periods collected from various localities were determined for their nitrogen,helium and argon contents,as ,weil as the isotopic composition of argun. The range of Ar^40/A^36 ratio was found to be 305--9255. The helium-argon chronological formula for calculating natural gas age was corrected. Based upon the chronological accumulation effect of Tadiogenic argon-40, an argon-40-argon-3-6 cmpirical formula for calculating natural gas age has been proposed. It can be seen from the ratio of nitrogen to atmospheric argon that most of nitrogen in these natural gases could not be derived from atmospheric nitrogen,but elsewhere.The range of radiogenic He/Ar^40 turns out to be 5.19 to 23.18 with the range betwwen 7 to 14 for most samples.The He/Ar^40 ratios of Sinian samples are in the range of 5.39 to 6.14,indicating their deep derivation from the earth.It should be noted that the Ar^40/Ar^36 ratio shows a general trend of approaching the atmospheric value from the Sinian to the Tertiary Period,or from old to young in geological age,mirroring,to a great extent,the evolutionary tendency of the rare gas isotopic composition of natural gases with the continuous degassing of the earth.     

钛系离子筛用于盐湖卤水锂提取的研究进展

锂资源是国家战略资源,我国盐湖锂丰富,从盐湖中高效提取锂具有重大意义。在盐湖提锂的各种方法中,吸附法具有选择性高、经济性好、工艺成熟度高的优势,发展高性能的吸附材料是该方法的关键,其中钛系离子筛被认为是很有发展前景的一类吸附材料。全面综述了近年来钛系离子筛用于盐湖卤水提锂的研究进展,重点阐述了钛系离子筛的结构、吸附机理、合成与改性方法以及成型方法,对钛系离子筛应用中存在的问题进行了分析、归纳,对其未来发展方向进行了展望,以期充分挖掘钛系离子筛的优势,实现其在盐湖提锂中的规模化应用。