某厂是处理炭质页岩的铀水冶厂。多年来该厂一直采用页岩堆烧-灰浸泡(酸浸)法提铀。由于页岩中铀对灰化温度很敏感,而堆烧又难以控制在低温下进行,故铀浸出率一般仅为38～45％。此外,堆烧还会引起严重的环境污染。对这种矿石,我们采用矿块拌酸法进行处理,已获得较好的结果。 A factory is dealing with carbonaceous shale uranium watermelt plant. Over the years the plant has been using shale heap - ash soaking (acid leaching) method to mention uranium. Uranium leaching rate is generally only 38-45% due to the fact that uranium in shale is very sensitive to ashing temperature and that it is difficult to control the pyrolysis at low temperatures. In addition, heap burn can cause serious environmental pollution. For this ore, we use nuggets mixed acid method for processing, have obtained better results.