青海祁漫塔格矿集区矿产资源可利用性等级评价探索

Exploitability grade evaluation of mineral resources in Qimantage ore concentration area of Qinghai Province

青海祁漫塔格矿集区成矿条件优越,矿产资源丰富,为了给矿集区矿产资源的开发布局优化提供支撑,通过可利用性等级划分的方法,对该矿集区的部分矿产资源进行了可利用性评价的探索研究。以选矿回收率为依据,分区域、分矿种制定可利用性评价等级表,再根据矿山现场选矿回收率进行"选矿回收率修正值"的计算,对比相应的可利用性评价等级表确定该矿山有用矿物的可利用性等级,最后根据有用矿物的可利用性等级确定该矿山的可利用性等级。结果表明:祁漫塔格矿集区的15座矿山(矿床)中易利用的占40.00%,中等可利用的占26.67%,难利用的占33.33%。研究结果可为政府矿业部门的管理及开发布局优化提供一定的参考。

The metallogenic condition is favorable and the mineral resources are abundant in Qimantage ore concentration area of Qinghai Province. In order to provide technical support for development of resources optimization in ore concentration area,the authors have made the exploitability evaluation for partial mineral resources in ore concentration area by exploitability grading. The specific research methods are as following： Firstly,based on the beneficiation recovery rate,the exploitability grade evaluation has been established for different minerals and different areas. Secondly,the ＂correction value of beneficiation recovery rate＂has been calculated according to beneficiation recovery rate in mine site. Then the exploitability grade of useful minerals in mine has been identified compared with the correspond exploitability evaluation grade. Finally,the exploitability grade of the mine has been identified based on the exploitability grade of useful minerals. The results show that the easy available grade accounted for 40.00% and the medium available grade accounted for 26.67%. Besides the grade difficult to use accounted for 33.33% in the 15 mines（ deposits） of Qimantage ore concentration area. The research results could provide some reference in the management and development optimization for government mining department.