The calculation method of various expenses for the design cost of the concentrator products is as follows:
(1) raw material cost: raw ore mining cost plus raw ore transportation cost from the mining site to the concentrator.
(2) cost of auxiliary materials: the designed consumption quota of auxiliary materials shall be multiplied by the local material price, or according to the national material unit price (if the transportation distance is far, the transportation and miscellaneous cost of materials shall be considered.) Calculated by multiplying the design consumption quota.
(3) water and electricity consumption for beneficiation: the designed water and electricity consumption index is obtained by multiplying its unit price (the water and electricity index shall deduct the electricity and water consumption of repair and administrative welfare facilities).
(4) wages of production workers: refers to the basic wages and auxiliary wages of direct production workers and auxiliary production workers engaged in Beneficiation Production (excluding the wages of machine repair, maintenance and non production personnel).
(5) wage surcharges for production workers: according to the state regulations, they shall be withdrawn at 11% of the total wage.
(6) major repair cost and maintenance cost (including materials, wages, power, depreciation and other costs for major repair and maintenance): calculated by the investment amount of fixed assets per unit product (deducting machine repair, maintenance, administrative and Living welfare facilities costs) multiplied by major repair rate and maintenance rate.
The overhaul rate is generally 2-2.5% of the original value of fixed assets, and the maintenance rate is generally 3-6% of the original value of fixed assets. The maintenance cost can also be calculated by multiplying the cost of equipment and buildings (structures) in the original value of fixed assets by their corresponding rates. The competent departments of each region have provisions on the rates of enterprises, which can be implemented by reference.
(7) basic depreciation cost: generally, the basic depreciation is withdrawn according to the service life of the enterprise or the service life of the equipment and buildings (structures) invested in the fixed assets.
When the service life of an enterprise is very long, 20 years is generally taken as the economic calculation life of the enterprise.
The formation rate of fixed assets shall be calculated according to the design budget, deducting the expenses of machine repair, maintenance, administration and Living welfare facilities in the fixed assets. If there is no design budget, it can be calculated as 0.85-0.9 of the total investment.
(8) management fee (including workshop fund and enterprise management fee): due to the large number of projects, it is complicated and difficult to calculate in detail when designing, which can be selected according to the actual indicators of similar enterprises.
Contact:
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