国内外铀矿石生物浸出机理及工艺应用研究现状

The-State-Of-The-Arts of Domestic and Foreign Mineral Bioleaching Mechanism and Process

微生物对铀矿的浸出主要以间接作用为主,Fe2+是铀矿氧化反应的电子传递者。生物浸出铀可以减少酸用量,提供硫酸高铁代替双氧水或过氧硫酸(盐)等氧化剂,可用于多种不同的浸出方式中,强化浸出过程,改善铀浸出动力学,提高铀浸出率,有利于环境保护。铀的生物浸出工艺主要有:生物堆浸工艺、生物地浸工艺和生物槽浸工艺。

Microbial leaching of uranium is dominated mainly indirect,Fe2 ＋ is the oxidation of uranium by electron transfer.Bioleaching of uranium can reduce acid consumption and provide high-speed rail instead of hydrogen peroxide,sulfuric acid or peracetic acid（salt） and other oxidants,can be used in many different ways in the leaching,the leaching process to strengthen and improve the leaching kinetics of uranium,uranium leaching rate increase,there is Environmental protection.Bio-leaching process of uranium are： biological heap leaching,bio-leaching and bio-tank leaching.