某铀矿石微生物浸铀酸度试验

Acidity Experiment on Uranium Bioleaching of a Uranium Mine

在其他条件一致,酸化酸度分别为10,20,30 g/L的条件下,采用柱浸方式对某铀矿石进行酸预浸—微生物浸铀对比试验,探索低酸耗、少板结、高浸出率的微生物浸铀工艺参数,为工业化堆浸应用提供参考。试验结果表明,3种酸化条件下,铀的最终浸出率接近,分别为96.14%,94.88%和98.25%,而耗酸率分别为8.23%,9.24%,9.67%,采用酸度为10 g/L的酸液酸化时耗酸率最低。

Under the different acidity of 10,20 and 30 g/L （other conditions are equal） , the uranium bioleaching technology with low acid consumption, less clogging and high leaching rates are studied through the column leaching experi- ments. This provides a reference for industrial leaching application. The results show that under three conditions, the ura- nium leaching rate is similar to be 96.14% ,94.88% and 98.25% respectively with acidity of 8.23% ,9.24% ,9.67%. When the acidity of acid is 10 g/L, the acid consumption is lowest.