期刊论文

Combined leaching process for strongly weathered and oxidized sandstone uranium ore and its kinetic model

Ding, Dexin(dingdxzzz@163.com)

中文

中南大学学报(自然科学版)

1672-7207

2021

52

11

3783-3791

10.11817/j.issn.1672-7207.2021.11.001

国家自然科学基金资助项目（50774047）～～；

本校为第一机构

首先,从我国某急倾斜疏干型铀矿床采取铀矿石样,分析其岩石组成、矿物组成和化学组成;其次,将每一类含铀的岩石分别破碎成小于10 mm的颗粒,将其筛分成[0,1),[1,3),[3,5)和[5,10) mm这4个粒级,并将各类岩石按其所占比例进行混合组成综合铀矿样,再将其分别破碎成粒径小于20,15,10和5 mm的颗粒,将它们筛分成[0,1),[1,3),[3,5),[5,10),[10,15)和[15,20) mm这6个粒级,分析各粒级铀矿石的质量分数和品位;第三,将综合铀矿样破碎成粒径小于10 mm的颗粒,将其筛分成[0,0.5)和[0.5,10)这2个粒级,对前者进行搅拌浸出试验,对后者进行柱浸试验;最后,采用ORIGIN软件拟合柱浸试验结果,建立柱浸动力学模型并进行验...

Firstly, uranium ore sample was taken from the steeply inclined and drained sandstone uranium deposit in China, and the rock, mineral and chemical compositions were analyzed. Secondly, each kind of rock was crushed to particles with smaller than 10 mm, which were screened to [0, 1), [1, 3), [3, 5) and [5, 10) mm fractions for the analysis of their mass fraction and grade, and all kinds of rocks were mixed on the basis of their mass fraction to form comprehensive uranium ore samples, which were crushed to particles with smaller than 20, 15, 10, ...