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笔者曾用恒酸、增酸法对易于浸出的沥青铀矿两个矿点的铀矿石进行了小型和工业试验。恒酸浸出试验是在其他浸出条件不变的情况下,维持整个浸出过程的酸度在7～8克/升;而增酸浸出法是在第一小时维持酸度4～5克/升,第二小时5～7克/升,第三小时为7～8克/升。小型试验结果,两种浸出法的铀浸出率均与常规浸出法(即一次加酸法)相当,但比常规浸出法的酸耗节省20～30％;而增酸浸出法又略优于恒酸浸出法。曾对同样两个矿点的矿石进行了增酸浸出的工业性试验,结果与小型试验相似。
The author once used a small scale and industrial tests on uranium ore at two ore points of leachated pitch uranium ore by the method of constant acid and increasing acid. Acid leaching test is the same in other leaching conditions, the maintenance of the acidity of the leaching process in the 7 to 8 grams / liter; and acid leaching method is maintained in the first hour of acidity 4 to 5 grams / liter, the second Hour 5 ~ 7 g / l, the third hour is 7 ~ 8 g / l. The results of small-scale tests showed that the leaching rate of uranium by both leaching methods was equivalent to that of the conventional leaching method (ie, one acid addition method), but the acid consumption was 20-30% less than that of the conventional leaching method. The acid leaching method was slightly better than the constant leaching method Acid leaching method. An industrial test of acid leaching has been carried out on ores of the same two ore sites, with similar results as in the small pilot.