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740-矿石为砂砾岩型铀矿石,结构疏松,易于浸出。常规硫酸搅拌浸出时,浸出率在93%以上。但该矿石品位较低,通常将其与品位高的含铀沥青页岩、碳质岩矿石(号)混合,通过控制氧化焙烧温度提高号矿石的浸出率。随着地浸采铀技术的发展,准备采用地浸技术回收其中的铀,因而对该矿石进?
740- ore is conglomerate type uranium ore, loose structure, easy to leach. Conventional sulfuric acid leaching, the leaching rate of 93% or more. However, the grade of the ore is relatively low, and is usually mixed with high-grade uranium-containing bituminous shale and carbonaceous rock ore (No.). The leaching rate of the ore is increased by controlling the oxidation roasting temperature. With the development of in-situ leaching uranium technology, it is planned to use in-leaching technology to recover the uranium therein, so that the ore is advanced.