| 江苏爱景山锶矿开发经济效益分析 |
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| 引用本文： | 刘振红,周爱群.江苏爱景山锶矿开发经济效益分析[J].化工矿产地质,1993(4). |
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| 作者姓名： | 刘振红 周爱群 |
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| 作者单位： | 化工部江苏地质勘探大队
(刘振红)，地质矿产部办公厅(周爱群) |
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| 摘 要： | 江苏爱景山锶矿为大型中低温热液脉状充填型矿床,现由南京锶矿进行露天开采,目前生产规模年产原矿1.7万t(商品矿1万t)。如果矿山采用采场直接采出部分高品位商品矿,其余低品位原矿进入选厂用重浮联选法选矿,在矿山已发生的现金流量基础上,对比两种方案经济效益,则年产原矿3.4万t(商品矿2万t)的生产规模经济效益好于现有生产规模,其贷款偿还期6.16年,内部收益率36.89%。按化学矿山基准收益率10%计算,矿山在露采期(19年)可获得1192.55万元的净现值收益。
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| 关 键 词： | 经济效益 内部收益率 净现值 江苏爱景山锶矿 |
EVALUATION ON ECONOMIC PROFITS OF DEVELOPING THE AIJINGSHAN STRONTIUM DEPOSIT,JIANGSU |
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| Abstract: | The Aijingshan strontium deposit in Jiangsu province represents a large-sized,low to moderate hydrothermal,vein-filled depsoit.The deposit is at present underoperation by opencut mining by Nanjing Strontium Enterprise,with an annualproduction capacity of crude ore of 17 thousand tons,the majority of which issellable.The high-grade,marketable ores are selectly dug out and then the low-gradeones left for benificiation by means of continuous heavy floatation.On the basis ofthe present capital input in such a mining and beneficiation,productivity of annualcrude ore of 34 thousand tons including comercial ore of 20 thousand tons willincrease profit a lot more than the above mentionded capacity according to theeconomic profit analysis through two schemes.In the case of the future productivityalong with the six-year loan redemption,the internal profit rate will reach 36% ifthe standard profit rate of 10% for chemical mining sector is used as a factor forcalculation.And the total net economic income of about 12 million can be earnedduring 19 year period of mine life. |
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