摘要
砾岩型古砂金矿床的工业品位研究在国内尚属首例，国外也不多见。本矿床产于吉林省珲春市第三纪春化沉降盆地边缘，含金量虽然偏低，但“矿石”成岩程度低，胶结疏松，易采易选。为此，最佳工业品位研究对我国在东北及内蒙地区寻找和开发此类矿床有很大的现实意义。作者研究结果：在当前的技术经济条件下，该矿床的最佳工业品位应是０．６５ｇ／ｍ３，段块最佳工业品位应是０．６０９／ｍ３，比现行工业品位低０．０５ｇ／ｍ３，将增加金属储量１２２２．８２ｋｇ。资源相对的利用率由现在的７７．９８％提高到９２．７０％，总利润由现在的７１４５．３６万元提高到７７３８．２１万元，增加近６００万元的利润。
Such study of the optimal industrial grade of the ancient conglomerate alluvial gold deposit is seldom seen abroad and the first time to be made domestically. The deposit,which occurs at the edge of the tertiary Chunhua subsided basin in Hunchun city, Jinn Province, is easy to be excavated and dressed because of lower degrees of the rock formation and ore cementation, although its gold content is on the low side .For this reason, the study of the optimal industrial grade is of great realistic significance to the prospecting and exploitation of this type deposits in the northeast and Inner Mongolia of China. According to the author's conclusion, the optimal industrial grade of this deposit must be 0 .65g/m3 and the lump must be 0 .60g/m3 under the:present technical and economic conditions. Compared with the present industrial grade (0 .70g/m3), its grade drops by 0 .05g/m3, and its metal reserve will increase by 1222 .82kg. The relative utilization ratio of the resources will come up to 92.7% from 77.98%(at present).The total profit will be improved from the present 71,453,600 to 77,382,100, about 6.000.000 increased.
出处
《黄金》
CAS
北大核心
1994年第2期8-15,共8页
Gold
关键词
砾岩型
金矿床
最佳工业品位
吉林
conglomerate type
gold deposit
optimal industrial grade
Jilin
