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Process for upgrading uranium from uranium ore containing arsenic.
Process for upgrading uranium from uranium ore containing arsenic.
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机译:从含砷铀矿石中提纯铀的方法。
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摘要
The ore is leached with H2SO4 soln., and the solids removed, e.g. by filtration.Before the filtrate is used for winning uranium, an alkali is added to obtain pH 1.5- 3.5 in the presence of ferric ions providing a molar ratio(MR) of ferric ions/As above 1.0, so the As is pptd. as iron arsenate is pref. carried out at 40-80 deg.C.
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机译:用H 2 SO 4溶液浸提矿石,并除去固体,例如用硫酸。在将滤液用于铀浓缩之前,在铁离子存在下添加碱以使pH值达到1.5-3.5,从而使铁离子/ As的摩尔比(MR)大于1.0,因此As呈pptd。因为砷酸铁是首选。在40-80℃下进行
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