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针对堆浸浸取弱渗透性离子型稀土矿过程中稀土矿物浸出率偏低和资源浪费的情况,通过模拟堆浸浸矿法,对弱渗透性离子型稀土矿进行了浸矿试验,分别从矿堆堆筑、矿堆内部增渗以及布液方法等方面对堆浸浸矿工艺进行了优化研究。试验表明:当矿堆底垫倾角为5°,圆柱体矿堆中增加的渗透器的截面积占矿堆截面积的2%时,浸出效果显著,其浸出率为79.24%,稀土离子平均浸出浓度为2.03g/L。与传统堆浸方法相比,浸出率提高了10.04%。
Aiming at the low leaching rate of rare earth minerals and waste of resources during heap leaching of weakly permeable ionic rare earths, the leaching tests of weakly permeable ionized rare earth ore were carried out by simulated heap leaching method. Heap piling, heap internal infiltration and cloth liquid methods and other aspects of heap leaching ore process optimization. The results show that when the inclination of the bottom of the heap is 5 °, the leachate effect of the permeator added in the cylindrical ore pile is 2% of the cross-sectional area of the heap, and the leaching rate is 79.24%. The average leaching rate of rare earth ions The concentration was 2.03 g / L. Compared with the traditional heap leaching method, the leaching rate increased by 10.04%.