在氧化气氛下焙烧某些难浸矿石可提高铀的浸出率,新墨西哥州西北部杰克皮尔帕盖特(Jackpile Paguate)的难浸矿石就是其中一例。对该矿石所进行的焙烧试验表明,可减少试剂费和加工方面的困难。对那些含有可氧化的有机质或粘土矿物而铀的浸出性差的矿石,焙烧也有利于下一步的加工。 Roasting some of the refractory ores in an oxidizing atmosphere increases the uranium leach rate, an example of which is the Jackpile Paguate refractory ores in northwestern New Mexico. Roasting tests on this ore showed that reagent costs and processing difficulties can be reduced. For those minerals that contain oxidizable organic or clay minerals that have poor uranium leaching, the roasting is also beneficial for the next process.