矿床地质2025，Vol.44Issue(2)：259-278,20.DOI:10.16111/j.0258-7106.2025.02.001
初论矿床动态技术经济评价
A preliminary study on dynamic technical and economic evaluation of mineral deposits
摘要
Abstract
The market is the fundamental criterion for determining"ore or waste".Mineral deposits have three attri-butes:geology,economics,and environment,which will be available along with changes of market and technical renovations.Therefore,it is necessary to carry out the dynamic technical and economic evaluation of mineral de-posits.This paper,through the practical cases of Zijin Mining Group Co.,Ltd.,the principles and methods of dy-namic technical and economic assessments of mineral deposits are to be explored based on the"Ore Five-process Integration Model".This model aims to maximize resource utilization,focusing on the flow of ore and integrating research and optimization across five stages:geology,mining,mineral processing,metallurgy,and environmental protection.By continuously reducing operating costs and lowering the resources cut-off grade,it converts the original noneconomic marginal mineralized rocks into economically mineable materials,achieves exponential growth of resources and maximizes social and economic benefits.The cost of mining,processing,metallurgy and environment determines the value of resources.With operating cost and cut-off grade as the major parameters,a framework of dynamic technical and economic evaluation methods for mineral deposits based on the"Ore Five-process Integration Model"was initially constructed,including the natural endowment characteristics of the mi-neral deposits(grade-tonnage model),the full-process model of cost and cut-off grade economic evaluation,cut-off grade and mineral resources fine management,and the assessment methods of metal equivalent cut-off grade and NSR cut-off grade.The equivalent cut-off grade is a very important index in the evaluation of polymetallic deposits.In the case study,guided by the"Ore Five-process Integration Model",through additional exploration and dynamic evaluation,the Zijinshan gold-copper mine in Fujian Province has expanded from a small sized gold deposit with only 5.45 t contained Au to a world class gold deposit of 316 t,with a cumulative gold production of 208 tones and a total profit of 22.5 billion Yuan.In another case,the total copper resources(contained copper met-als)of the Julong copper mine in Xizang has expanded from the original 10.27 Mt to 25.88 Mt,and the amount of re-estimated copper,molybdenum and silver resources is 2.5 times,2.9 times and 2.3 times of original number,respectively.On the reserves,the copper metal reserves have increased from 3.92 Mt to 17.34 Mt,which is 4.4 times of the original amounts(resources are inclusive of reserves),significantly enhancing the social and economic benefits.关键词
矿床技术经济评价/矿石流五环模型/边界品位/当量品位/紫金矿业Key words
technical and economic evaluation of mineral deposits/Ore Five-process Integration Model/cut-off grade/equivalent grade/Zijin Mining Group分类
天文与地球科学引用本文复制引用
陈景河,王京彬,刘金辉,和志军..初论矿床动态技术经济评价[J].矿床地质,2025,44(2):259-278,20.基金项目
本文得到紫金矿业集团股份有限公司科技项目矿山综合找矿预测专项(编号:4104KY2022030001)、国家重点研发计划项目斑岩铜金系统的综合找矿技术与增储示范(编号:2022YFC2903604)和巨龙铜多金属资源基地绿色勘查与开发示范(编号:2022YFC2905005)联合资助 （编号:4104KY2022030001）
