地浸砂岩型铀矿特高品位处理方法改进
An improved method of treating of erratic high-grade samples for in-situ leaching sandstone-type uranium deposits
陈放 1刘富强 1张虎军 1陈佳慧1
作者信息
- 1. 核工业二一六大队,新疆 乌鲁木齐 830011
- 折叠
摘要
特高品位处理是地质矿产行业储量估算中的重要环节,但是现行的方法并不统一.在地浸砂岩型铀矿储量估算中,特高品位处理一直使用的是传统的品位变化系数法,该方法能够满足特高品位处理及资源量估算的要求,但仍有值得改进的地方.本文从常用的特高品位识别及处理方法入手,分析各种特高品位识别及处理方法的合理性及不足之处,试图通过综合分析并运用实例对当前地浸砂岩型铀矿特高品位处理方法进行改进.笔者参考传统品位变化系数法平均值替代特高值方法及分布函数法中随机数替代的思路,在不影响待处理矿段的替代值平均品位的情况下,以矿段原始随机品位的大小为权重分配替代品位进行方法改进,通过运用蒙其古尔铀矿床4个品位分布特征各异的特高品位钻孔进行改进方法验证,结果表明该方法符合规范要求并能达到储量估算目的,也能使特高品位处理后矿段品位分布特征与原始地层中品位分布特征一致,达到改进效果.
Abstract
Treating of erratic high-grade samples is a crucial aspect of reserves calculation in the geological and mineral industry.However,current methods lack uniformity.In the calculation of reserves of in-situ leached sandstone-type uranium deposits,the traditional Coefficient of Grade Variation Method has been using,which can meet the basic requirement of reserves calculation,but there is still room for improvement.The authors start with common methods of treating erratic high-grade samples,analyze the rationality and shortcomings of them,and try to improve the current method of in-situ sandstone type uranium deposits by comprehensive analyses and practical applications.The improved method refers to the idea of replacing the erratic high-grade by the average grade of the traditional Coefficient of Grade Variation Method and the random number of the Distribution Function Method,and puts the weight of the original random grade of ore block on the replacement values without changing the average grade of replacement value of the ore block to be treated.The method is verified by four erratic high-grade boreholes in Mengqiguer uranium deposit,and the results show that it can reach the goal of reserves calculation,at the same time,the characteristics of grade distribution of the ore block after treating are consistent with those of the original strata,which proves that the new method can achieve the purpose of improvement.
关键词
特高品位处理/地浸砂岩型铀矿/品位变化系数法/分布函数法/数理统计法Key words
ultra-high grade treatment/in-situ leaching sandstone-type uranium ore/grade variation coef-ficient method/distribution function method/mathematical statistics method引用本文复制引用
基金项目
中国核工业地质局"新疆准噶尔盆地铀矿资源调查评价与勘查"项目(202206)
新疆伊犁盆地及周边地区砂岩型铀矿资源调查评价与勘查项目(202205)
出版年
2024
NETL
NSTL
维普
万方数据