摘要
从某砂岩铀矿床的试验钻孔采取矿样,进行工艺矿物学研究、搅拌浸出和柱浸试验。结果表明,该铀矿石耗酸物质和还原性物质含量低,柱浸试验采用10g/L硫酸浸出,原矿品位为0.022 4%,液固体积质量比为1.91L/kg,浸出率为89.19%,每吨矿石耗酸8.2kg,每吨铀耗酸41.88t。推荐现场地浸试验采用酸法浸出工艺,配液硫酸质量浓度为10g/L,浸出过程不需添加氧化剂。
Ore samples were took from in-situ leaching experiment boreholes in a sandstone-type uranium deposit. Technological mineralogy study, agitating leaching and column leaching experiments were carried. The results show that the content of minerals consuming acid and deoxidized minerals is low. When sulfuric acid concentration was 10g/L, initial uranium content was 0. 022 4~, and liquid-to-sol- id ratio was 1.91, leaching rate of column leaching experiments is 89.19~, acid consumption is 8.2 kg/t ore, acid consumption is 41.88 t/tU. Acid leaching technology is recommend for field in-situ leaching experiment, sulfuric acid concentration in confecting solution is 10 g/L, and oxidizing agent is needless during leaching process.
出处
《铀矿冶》
CAS
2013年第3期128-132,共5页
Uranium Mining and Metallurgy
基金
国家高技术研究发展计划(863计划)项目(2012AA061802)
关键词
砂岩铀矿
酸法原地浸出
室内试验
sandstone-type uranium deposit
acid in-situ leaching
laboratory experiment
