Exploitation Technical And Economic Evaluation For Dong Tangzi Strata-bound Lead-zinc Mine In Shan Xi Province

Exploitation technical and economic evaluation for mineral resource is based on geological appraisal,it provides comprehensive evaluation for the whole project of exploitation technical and economic evaluation of mine,the targete is to offering scientific basis of mine exlpoitation.Whatever area of deposit,it is both economic evaluation and feasible technical project selection of mineral resource exploitation and mining and mill run,finally,according to feasible technical and economic for making optimize.The paper's target is to providing a best comprehensive project of technical and economic for Dong Tangzi lead-zinc strate-bound mine,through exploitation technical and economic evauation.First,particular described the geological features, analyzing the stratum construction and deposit genetic type and exploitation condition of deposit,through contrasting to decide mining method and mill run method.These indexes and methods provide basis of exploitation technical and economic evaluation for ong Tangzi lead-zinc strate-bound mine. The paper deeply consider the situation of the international market nowadays,combined with recoverable reserves to offer three differrent scale project of production,that is 100t/d,200t/d and 300t/d.By using the most in commou use method of technical and economic evaluation-net present value method, Inner Return Rate-to calculate the investment profit ratio, date of repayment of investment and net present value and company inner return rate etc.After contrast the total investment,service life and investment profit ratio,the paper's opinion is that the projectâ…¡is the most optimized,mean while, vaildating by using the model of grey theory,and the results suggest that the projectâ…¡is actually could combined technical with economic to be the most optimized.Considering the potential risk aroused by price change and etc,the paper also carry out the single parameter sensitivity analyzing of sales income,sales cost,construction investment and investment profit ratio,and get a result that shows the infection of every parameter is under control.Finally, this paper indicates that Dongtangzi Strata-bound lead-zinc mine will be very profitable in employing scheduleâ…¡due to its convenient location and transportation conditions and resouce potential of usable.