Simulating experiment on soaking and leaching of Cd in the Niujiaotang Cd-rich Zn deposit, Guizhou Province, China

查看全文 作　　者：YE LJn and LlU Tiegeng Open Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 出　　处：《Chinese Science Bulletin》索引1999年第44卷第S2期,共4页 摘　　要：CADMIUN is a dispersed element and has long been explored and utilized as a by-product of Pb-Zn ores.Current research on Cd is focused on the following aspects: (i) environmental effects due to the migration and enrichment of Cd as a heavy metal poisonous element in water (rivers, lakes, industrially discharged waste water), sediments and soils. The research paper concerned can be seen in variousjournals of environmental science; and (ii) exploration of the existing forms of Cd and its independentminerals and ordinary geological problems. However, many researchers have paid little attention tothe geochemical behavior of Cd and its environmental effects under supergene weathering-leaching conditions in Cd-bearing Pb-Zn deposits. Cd can be separated from Zn in the supergene weathering processand its sulfate CdS0-4 is easy to dissolve in water. Our preliminary studies showed that Cd can be enrichedto some extent under supergene weathering conditions in Niujiaotang deposit. The stronger the extent 关 键 词：LEACHING experiment Cd-rich ZN DEPOSIT Guizhou.