Document Type : Research Paper
Author
pilot plant officer
Abstract
In this research, the recovery of uranium from refractory ores in the northern region of Isfahan by acid washing and acid leaching processes has been studied. Also, the effect of different parameters on acid washing and acid leaching was investigated. The results showed that acid concentration and liquid-to-solid ratio in acid washing as effective factors uof acid washing, as well as leaching temperature, leaching time, amount of acid and liquid-to-solid ratio are important factors in uranium recovery from refractory ores. The optimal parameters of the process include acid concentration of 0.5 M and liquid to solid ratio of 4.5 in the acid washing process, as well as temperature of 20 degrees Celsius, time of 5.5 hours, acid amount of 300 kg per ton of ore and ratio 2.5 liquid to solid was obtained in the sales process. Under these conditions, the efficiency of uranium extraction from refractory ores in the northern region of Isfahan was 83%.
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