堆浸法从某低品位难选含铀钼矿中回收钼

Molybdenum Recovery from One Uranium Ore by Heap Leaching Method

针对某低品位含铀钼矿钼浸出率不高、常规强化搅拌浸出固液分离困难等问题,研究了拌酸熟化-堆浸工艺,提出一种适合处理该矿石的工艺方法。试验考察了堆浸工艺参数矿石粒度、喷淋强度、浸出剂酸度、氧化剂用量和浸出时间对钼浸出率的影响,结果表明:在矿石粒度-3.2 mm、喷淋强度40~60 L(m^(2)·h),浸出剂酸度5 g L、浸出时间6~8 d的条件下,矿堆渗透性较好,钼浸出率可达73%。

Address to low leaching rate of molybdenum and difficulty of liquid-solid separation under normal intensity stirring leaching,a method of acid curing-heap leaching was put forward.Effects of ore granularity,spray intensity,acidity of leachant,amount of oxidant,and extraction time on leaching rate of molybdenum were investigated.The results indicate that the leaching rate of molybdenum is 73%and there is no problem of ore heap penetrability under the conditions including ore granularity of 3.2 mm,spray intensity of 40—60 L(m^(2)·h),acidity of leachant of 5 g L,and extraction time of 6—8 days.