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本文论述了从我国某地含磷、铀矿石中浸出铀和磷的若干浸出方法。该矿石铀品位为0.12％,五氧化二磷品位为7.0％。由于矿石中有92.0％的铀赋存于耗酸的胶磷矿中,并有碳酸盐等多种耗酸物质存在,故该矿属于耗酸高、难处理的含磷铀矿。 经多种方法浸出实验的结果表明:先用磷酸,后用硫酸分步浸出的结果较好;当返回的磷酸量为矿样重量的60％,硫酸用量为矿样重量的25％时,铀和五氧化二磷的浸出率分别达到97.0％和88.7％。
This article discusses some leaching methods of leaching uranium and phosphorus from phosphorus and uranium ore in our country. The ore uranium grade of 0.12%, phosphorus pentoxide grade of 7.0%. Since 92.0% of the uranium contained in the ore is consumed in the acid-deficient phosphate rock and carbonate and other acid-depleting substances exist, the ore belongs to the phosphorus-bearing uranium mine with high acid consumption and difficult treatment. The results of the leaching experiments by various methods show that the first step is to use phosphoric acid and then the sulfuric acid is used for leaching step by step. When the returned amount of phosphoric acid is 60% of the weight of the sample and the amount of the sulfuric acid is 25% of the weight of the sample, And phosphorus pentoxide leaching rate reached 97.0% and 88.7% respectively.