Author(s): LI Hong-xing, ZHOU Gen-mao, XU Guo-long, WEN Zhen-qian, ZHANG Chong, HE Ke
Pages: 79-83
Year: 2016 Issue:  2
Journal: Uranium Mining and Metallurgy
Keyword:  in-situ leaching; clayey sandstone type uranium ores; acid agitation leaching; leaching behavior;
Abstract: 某矿床发育有砂岩和泥质砂岩2种类型铀矿体,铀资源主要存在于泥质砂岩型铀矿体中.工艺矿物学和室内酸法搅拌浸出试验结果表明:原矿铀品位与黏土矿物含量呈正比,以蒙脱石为主的黏土矿物既是铀富集的重要吸附剂,也是导致矿石渗透性较低的主要因素;在液固体积质量比为5 L/kg,硫酸质量浓度≥5 g/L条件下,砂岩铀矿石和泥质砂岩铀矿石的浸出性能均较好,其四价铀和六价铀均能达到较好的浸出效果,总铀浸出率均可达75％以上.