Development and Prospect of China Uranium Mining and Metallurgy

The development of industry of uranium mining and metallurgy in China has been reviewed generally,emphasizing on investigation approaches and application levels of uranium mining technologies such as in-situ leaching,heap leaching,stope leaching:on the basis of analysis on status of uranium mining and metallurgy and problems existed,also considering the specific features of deposit resources,the development orientation of uranium mining and metallurgy in China is pointed out.The industry of China uranium mining and metallurgy is faced to new opportunity of development and challenge in 21st century,the only way to realize sustainable development of uranium mining and metallurgy and harmonious development between economy and environment is to develop new technology on mining,ore beneficiation and metallurgy,increase the utilization level of uranium resources,low down impact on environment caused by mining and metallurgy.

原地破碎浸铀的布液方式及其影响因素

介绍原地破碎浸铀的常见布液方式 ,分析其主要影响因素。矿床产状、矿堆高度、细菌浸矿技术、地球化学分层是布液方式的主要影响因素。细菌浸铀和联合布液技术是解决“浸矿死角”和地球化学分层问题的有效方法。

溶浸铀矿开采回顾及电动地浸采铀展望

传统溶浸采铀方法不能经济、高效、环保地开采超低品位、低渗透性铀矿。为了解决低品位、低渗透性铀矿浸出效率低以及浸出过程中对当地生态环境的影响等问题,综述了近60年来的溶浸采铀物理、化学、微生物增效方法及电动技术的研究进展。结合原地浸出方法和电动技术,分析发现电动原地浸出(EK-ISL)技术主要通过电迁移和电渗透的作用提高溶浸剂的均匀渗透能力和离子的定向迁移速度,从而促进含矿层目标矿物和脉石溶解,显著提高矿层渗透系数及铀浸出率,并在电场的定向作用下降低溶浸剂向采场外迁移的风险。电动原地浸出采铀技术在低渗透、低品位铀矿开采中的应用前景十分广阔。

我国地浸采铀工艺的述评及展望

本文介绍了我国地浸采铀的历史和现状，对原地浸出采铀工艺进行了述评，提出了今后地浸发展中应解决的问题，并对地浸采铀的资源及前景作了展望。