摘要
本文对云南金顶铅锌矿区和山东大汶口盐矿区硬石膏中铜、铅、锌、锶、钡含量的测试结果进行了统计分析,并进行了95℃和150℃下硬石膏在不同介质水溶液中重金属的活化模拟实验.结果表明:硬石膏岩中普遍含有铜、铅、锌、锶和钡等重金属.其中铅和锶的含量服从正态分布;而铜、锌和钡的含量则服从对数正态分布.硬石膏岩中的重金属在介质水溶液中能够被活化,尤其是其中的锶,活化后的释出量相当可观.含有NaCl和氨基酸的酸性水溶液更有利于这种活化作用.据此,作者认为:蒸发岩层可以提供部分成矿无素,即通过介质水溶液的活化作用形成有意义的戍矿溶液.含有NaCl和有机质(氨基酸)的水溶液不仅有利于蒸发岩中重金属的活化,而且有利于它们在溶液中的迁移和富集.
:The authors of this paper analysed the content characteristics of copper, lead, zinc, strotium and barium in sedimentery anhydrite of Jinding lead-zinc deposit in Yunnan province and Dawenkou salt deposit in Shandong province, and did the model experiment on their activation in the various medium aqueous solution at 95℃ and 150℃. The results
reveal that the anhydrite generally contains such heavy metals as copper, lead , zinc, strotiom and barium. The content of lead and strotium shows a normal distribution, and that of copper, zinc and barium a logarithmic normal distribution. The heavy metal in anhydrite may be activated by the medium aqueous solution, and the released value of strotium is considerably large. The acidic medium aqueous solution containing NaCl and amino-acids is more favorable to the activation of the heavy metals. Accordingly, the authors consider that evaporite may provide a part of mineralization metals, i.e. owing to this activation agent the significant mineralizaion liquor may be formed. The solution containing NaCl and amino-acids is favorable not only to the activation of the heavy metals but also to their trasportation and concentration in the aqueous solution.
出处
《现代地质》
CAS
CSCD
1991年第1期79-90,共12页
Geoscience
关键词
硬石膏
水溶液
重金属
活化
迁移
: anhydrite, aqueous solution, heavy metal, amino-acid, activation
