原地破碎浸出和分层崩落法地表堆浸采铀的成本、利润分析

ANALYSIS ON COST AND PROFIT OF URANIUM MINING IN LEACHING IN PLACE AFTER BLASTING AND HEAP LEACHING ON SURFACE AFTER SUBLEVEL CAVING

本文以七九四矿为例，通过对原地破碎浸出和分层崩落法地表堆浸两种采铀方法的地质、经济、技术参数的模拟，进行了经济分析，推算出两种方法的单位产品成本和利润对矿石品位的函数关系式，绘制了成本和利润随品位的变化曲线，从而可以方便地确定当口收率一定时，原地破碎浸出采铀的合理边界品位，及不同平均品位的矿石应选择的采矿方法，在生产经营中起到参考和指导作用。

Taking the Uranium Mine No. 794 as an example,this paper makes an economic analysisthrough simulations of geological,economic and technological parameters for both uranium miningmethods leaching in place after blasting and heap leaching on surface after sublevel caving,anddeduces the functional relationships between the cost and profit of unit product and the uraniumore grade for both the methods,and plots the curves of change of the cost and profit from the oregrade. Using the functional relationships and the plotted curves it is convenient to determine thereasonable cut--off uranium grade in the leaching in place after blasting and the mining methods tobe selected for different average ore grades, when the recovery is qiven,which can play a reference and direction role for production management.