期刊论文

中文

矿产保护与利用

1001-0076

2020

40

4

9-16

10.13779/j.cnki.issn1001-0076.2020.04.002

“快速氧化Fe2+的移动床生物反应器及快速氧化Fe2+的方法”专利转化现场扩大试验研究(2018KHX45)。

本校为第一机构

为了节省酸法浸铀过程中氧化剂用量,以多孔耐酸陶粒作载体固定耐冷嗜酸硫杆菌,在新疆某酸法地浸采铀矿山构建了高7.0 m、内径2.0 m、总容积17.8 m^3的新型高效生物反应器,进行快速氧化地浸采铀吸附尾液中Fe^2+扩大试验研究。研究结果表明,在现场温度为5~24℃、吸附尾液中Fe^2+浓度为200~300 mg/L、通气量为59.0 m^3/h时,生物反应器的最大流量可达28.2 m^3/h,Eh(氧化还原电位)大于570 mV,尾液中Fe^2+在低温环境下可被快速完全氧化。该试验结果为细菌代替氧化剂氧化吸附尾液中Fe^2+的拓展应用提供了借鉴意义。

In order to save the amount of oxidants for acid leaching of uranium,a new type of high-efficiency bioreactor with 7.0 m in height,2.0 m in inner diameter and 17.8 m^3 in total volume was designed and constructed in a uranium mine of Xinjiang,porous acid resistant ceramsites were selected as the carriers of bacteria,and the Fe^2+in the tail liquor of in-situ leaching of uranium by Acidithiobacillus ferrivorans immobilized on the carriers at low temperature,to carry out an extended experimental study.The results showed that the maximum flow rate...