某低品位难选铀钼矿钙化焙烧浸出工艺试验研究  

Experimental study on low-grade refractory uranium-molybdenum ore leaching with calcified roasting technology

作　　者：王海塔 师留印[2] 杨剑飞[2] 刘会武[2] 陈天宝[2] 刘智[2] 黄永[2] 李文星 

机构地区：[1]中核沽源铀业有限责任公司,河北沽源076561 [2]核工业北京化工冶金研究院,北京101149

出　　处：《铀矿冶》2016年第3期191-194,共4页Uranium Mining and Metallurgy

摘　　要：研究了从低品位难选铀钼矿石中浸出铀钼的工艺,考察了焙烧温度、添加剂种类及用量、焙烧时间、矿石粒度等对矿石焙烧效果的影响。试验结果表明,最佳的钙化焙烧工艺条件为:矿石粒度-100目、焙烧温度750℃、碳酸钙用量为4%(与矿石质量比)、焙烧时间2h。在此工艺条件下,焙砂用硫酸浸出,铀和钼浸出率分别达到62.5%和79.2%。Leaching uranium and molybdenum from low-grade refractory uranium-molybdenum ore which was processed by calcified roasting technology has been studied.The effects of particle size of ore,roasting additive,roasting temperature,roasting time were examined.The results show that by application of sulfuric acid as leaching agent,uranium and molybdenum leaching rate can reach 62.5%and 79.2% respectively under the conditions of particle size of-100 mesh,roasting temperature of750 ℃,roasting time of 2hours,using 4% CaCO3 as additive in the roasting process.

关 键 词：难选铀钼矿石 钙化焙烧 浸出 铀 钼 

分 类 号：TF841.2[冶金工程—有色金属冶金] TL212.12[核科学技术—核燃料循环与材料]