某砂岩型铀矿床矿石微生物浸出试验  

Bioleaching of Uranium Ore from Sand-type Uranium Deposit

作　　者：周义朋[1,2] 沈照理[1] 何江涛[1] 刘金辉[2] 史维浚[2] 

机构地区：[1]中国地质大学,北京100086 [2]东华理工大学,南昌330013

出　　处：《有色金属（冶炼部分）》2014年第10期54-56,68,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点基础研究发展计划(973计划)项目(2012CB723101)

摘　　要：对某砂岩型铀矿床的矿石进行了不同酸度和Fe^(3+)浓度的微生物浸出试验,以及与酸法浸出(H_2SO_4浓度5 g/L)的对比试验。结果表明,微生物浸铀在4 g/L酸度、2 g/L Fe^(3+)条件下铀浸出率最高(96.43%),比酸法浸出率高27%;微生物溶浸时Fe^(3+)浓度超过2 g/L对浸铀没有明显的提升作用。One sand-type uranium deposit was bioleached with different acidities and Fe^3＋ concentrations. The result was compared with that of acid leaching of 5 g/L H2SO4. The results show that the optimum bioleaching rate of uranium of 96.43% is obtained under the conditions of 4 g/L H2SO4 and 2 g/L Fe^3＋ , which is 27% higher than that of acid leaching with 5 g/L H2SO4. Fe^3＋ concentration over 2 g/L is not effective to promote uranium bioleaching.

关 键 词：微生物浸铀 酸法浸铀 砂岩铀矿 

分 类 号：TL212.12[核科学技术—核燃料循环与材料]