Application of the present value cost method in selection of coal-slime mixture conveyance scheme

The conveyance of coal-slime mixture is governed by a number of factors,and the key to the selection of an optimal scheme lies in the technical analysis and economic comparison of the alternative conveyance methods. Under the prerequisite that all the options are technically feasible,it is required to make an analysis of first the initial capital and operating costs. In comparison of the alternative schemes that vary in proportions of investments on equipment,the capital input required for renewal of equipment is an important factor not to be ignored. Result of study shows that the PVC method used can directly reflect the discrepancies of different schemes with regard to economic result. The study provides a valuable reference,facilitating the selection of optimum coal-slime mixture conveyance scheme by coal mines.