摘要
为查明滇东南锡多金属矿天然放射性水平,了解锡矿采、选、冶过程中的放射性污染,选择了该区10个锡矿山,测量了各类锡多金属矿原矿、精矿、尾矿及冶炼炉渣放射性核素比活度。锡多金属矿原矿及围岩放射性水平受地层与矿化类型影响很大,硫化矿整体放射性水平不高,砂锡矿却普遍高出背景值数倍,尾矿、炉渣放射性水平也相对较高,对环境的影响不容忽视。
In order to verify the natural radioactivity level of tin polymetallic ore in Southeast Yunnan, and find out radioactive pollution in mining, dressing and smelting processes, 10 fin ores in this area were chosen to measure radionuclides＇ specific activity in each kind of fin polymetallic ore, undressed ore, ore concentrate, debris and smelting slag. It is shown that the radioactivity level of fin polymetallic ore, undressed ore and adjacent formation is affected by the strata and mineralization type, the radioactivity level of sulfide ore is not high as a whole, while that of fin ore generally is several times higher than the background value and that of debris and slag is also relatively high, whose impact on the environment is not neglectable.
出处
《地球与环境》
CAS
CSCD
北大核心
2006年第3期77-82,共6页
Earth and Environment
关键词
滇东南
锡矿
放射性
调查
Southeast Yunnan
tin ore
radioactivity
investigation
