期刊论文

Occurrence Characteristics of Uranium in Sulfur-containing Uranium Waste Rock

中文

铀矿冶

1000-8063

2022

41

2

89-95

10.13426/j.cnki.yky.2022.02.001

本校为第一机构

针对江西某退役铀矿含硫铀废石中存在的铀污染问题,以矿区3种不同直径的废石为载体,通过BCR连续分级提取试验研究铀的赋存特征规律,分析了含硫铀废石中不同矿石粒径对铀的赋存形态的影响。研究发现,在不同种类的含硫废石中铀的形态分布存在显著差异。在土壤表层废石(A组)中,铀主要以可氧化态及残渣态存在;在地表块状废石(B组)及边坡上采集的块状岩石(C组)中,铀主要以可还原态及残渣态存在。A组、B组废石中铀含量随矿/废石粒径的减小而增加,C组废石中铀含量受粒径影响较小。在含硫矿石中活性铀与铀含量没有密切关系,S、U、Fe分布特征大体一致。

Aiming at the uranium pollution problem in the sulfur-containing uranium waste rock of a decommissioned uranium mine in Jiangxi, three kinds of waste rocks with different diameters in the mining area were used as the carrier, and the occurrence characteristics of uranium were simulated through the BCR continuous graded extraction test, and the sulfur-containing uranium was analyzed. The influence of different ore sizes in waste rock on the occurrence of uranium. The study found that there are significant differences in the distribution of uranium in sulfur-containing rocks. In the soil surface...