摘要
通过对酸化起始酸度和浸出率的分析,初步探讨了酸化酸度与微生物浸铀的酸耗及铀的浸出率之间的关系。结果表明,较高的起始酸度可明显提高铀的浸出率。对于不同的矿石,应采取不同的起始酸度,但酸化的起始酸度不宜过低,否则对缩短浸出时间和提高浸出率不利,30~40g/L的硫酸作为起始酸度比较合适,如矿石粒度较大,应考虑用30g/L以上的硫酸起始酸化。
The relationship between the acidified acidity and the acid consumption and uranium leaching rate in the process of uranium bioleaching is investigated. Results indicate that higher uranium leaching rate is obtained when the relatively high acidity was applied at beginning. For different minerals, although the original acidity should he different, lower original acidity was not better for shortening leaching period and improving uranium leaching rate. It confirms 30 -40 g/L sulfuric acid as the original acidity was more suitable and more than 30 g/ L should be applied if the mineral particle sizes were larger.
出处
《东华理工大学学报(自然科学版)》
CAS
2012年第3期246-249,共4页
Journal of East China University of Technology(Natural Science)
基金
江西省教育厅产学研合作基金资助项目(GJJ09008)
核能开发项目(科工二司〔2009〕1230号)
关键词
微生物浸铀
酸化
酸化酸度
浸出率
耗酸率
uranium bioleaching
acidification
acidified acidity
leaching rate
acid consumption