某花岗岩铀矿实验室溶浸工艺实验  

One Granite Uranium Leaching Technology Test in Laboratory

作　　者：窦小平 熊超 王红海[1] 刘欣 时燕华 

机构地区：[1]江西省核工业地质局测试研究中心 [2]成都理工大学地学核技术四川省重点实验室

出　　处：《核化学与放射化学》2015年第6期509-516,共8页Journal of Nuclear and Radiochemistry

摘　　要：采用传统水冶工艺开采铀,生产成本高,选冶效率较低。通过对某花岗岩铀矿石实验室工艺实验的研究,获得最佳溶浸工艺参数,为下一步进行现场原地破碎浸出实验提供技术依据。对铀矿床矿石进行了取样加工及化学全分析,并主要进行了搅拌浸出实验、泡浸实验、柱浸实验。结果表明:某花岗岩铀矿石浸出性能好,耗酸量低,铀浸出率高,浸出时间短;与常规水冶工艺相比,改变了浸出剂的硫酸浓度常规工艺从高到低的布液方式,采用由低到高再低的周期流程布液方式,有效地避免了硫酸钙的沉淀,降低了成本。Applying traditional hydrometallurgical process to exploit result in high produc- tion costs, low beneficiation and smelting efficiency. This article aims to obtain optimum technological parameters by researching on a granite uranium ore testing laboratory technolo- gy, which provide technical basis for in-situ broken ＆ leaching tests for the next step. Ura- nium ore deposit were sampled processed and full analysised of chemical elements. The tests mainly include mechanical agitation tests, static leaching tests and column leaching tests. The tests suggest a certain granite uranium ore leaches good, consume low amount of acid with high rate and short time of uranium leaching. Compared with the conventional hydro- metallurgical process, this research reforms the conventional liquid lay out mode of sulfuric acid concentration process. Low-high-low periodical liquid layout mode is adopted instead of conventional high-low mode. The precipitation of calcium sulfate was effectively prevented. Moreover the costs are reduced.

关 键 词：花岗岩 溶浸 工艺实验 浸出率 

分 类 号：TL212[核科学技术—核燃料循环与材料] TD868[矿业工程—金属矿开采]