铀矿

This item has studied the applications of the measure of natural thermoluminescence of soil, natural voltage and geogas, whose pen...

本课题选择穿透能力较强的土壤天然热释光测量方法、自然电位法和地气测量三种方法，研究其在隐伏砂岩型铀矿找矿中的应用。

This paper toke a review of Chinese nuclear plants and technology development history track.

论文根据中国核电的发展计划和规模，预测了中国未来对铀矿资源的需求，提出了初步的对策，论文选题有一定的参考意义。

At the same time, the scuttle structure of ablation shaped by the reverse process lead the layer of interest exposed to the air to suffer oxidation and infiltration of urania, which is favourable to interlayer oxidation and mineralization of uranium.

同时，反转作用形成的剥蚀构造天窗，使目的层裸露于地表，接受含氧含铀水的渗入和氧化作用，为层间氧化带及其铀矿化的形成创造了有利条件。

Studied the water flowing characteristics in gangue used as water-gravel-mixed filling material from one Uranic mine.

利用某铀矿尾矿作为水砂充填料的水流特性研究，针对不同粒度的试样，进行常水头渗透试验。

Uraninite is the only ore mineral .

唯一的矿石矿物为晶质铀矿。

In order to enhance the acid leaching rate of the mineral uraninite, selected four indexes including acid consumption, time and temperature as the evaluation factors with influence acid leaching of actual manufacturing experience.

为了提高铀矿酸法浸出的浸出率，根据实际工作经验选取了包括酸耗、时间、温度4个指标作为影响浸出率建模变量。

At present,the rate laws and reaction mechanisms of pyrite oxidation,pyrite and chalcopyrite formation,uraninite and magnetite dissolution in aqueous solutions are mainly studied,and it is discovered that (1)oxidation rate of pyrite controlled by surface reaction assume fractional dependence on Fe3+ and O2 molalities in acid solutions;(2)Pyrite cannot nucleate directly from solutions below 300 ℃,it can only form initially through sulfidation of a FeS precursor. The rate equation of reaction between FeS and H2S to form pyrite is of the second order;(3)Chalcopyrite is formed by reactions of pyrrhotite or pyrite with Cu2+,the former proceeds via a series of mediate metastable phases of Cu-Fe sulfide,whereas the rate equation of the latter is apparently of the first order which is controlled by surface reaction;(4)The nonlinear behavior of magnetite dissolution at acid pH can be represented by a shrinking core model coupling with surface reaction and diffusion transport.

目前主要研究了水溶液中黄铁矿氧化、黄铁矿和黄铜矿形成、晶质铀矿和磁铁矿溶解的速率定律和反应机理，发现：(1)酸性溶液中黄铁矿的氧化速率对Fe3+和O2浓度呈分数依赖并受表面反应的控制；(2)低于300 ℃时黄铁矿不能从溶液中直接成核，而需初始地通过FeS先驱物的硫化生成，FeS与H2S反应形成黄铁矿的速率方程为二级；(3)磁黄铁矿或黄铁矿与Cu2+反应均可形成黄铜矿，前者经历了一系列准稳的Cu-Fe硫化物的中间物，后者的速率方程为表观一级并受表面反应的控制；(4)酸性pH时磁铁矿的非线性溶解行为可采用表面反应扩散输运耦合的收缩核模型来描述。

Thiobacillus ferrooxidans ; uraninite ore ; leaching mechanism ; leaching rate ; indirect action

氧化亚铁硫杆菌；沥青铀矿石；浸铀机理；浸出率；间接作用

At some point during its formation the diamond may have come in contact with radioactive material such as Uranium ore.

在某个时候在其形成的钻石可能有过接触放射性物质，如铀矿。

The influencing factors of the uncertainty of measurement result for uranium in uranium ore by volumetric analysis method were discussed.

分析了容量法测定铀矿石中铀含量测量不确定度的影响因素。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。