Lithium ore cost calculation method. Master the daily lithium price Lithium ores include spodumene, lepidolite, spodumene, etc.
Lithium ore cost calculation method. Master the daily lithium price
Lithium ores include spodumene, lepidolite, spodumene, etc.
1、 Production cost per ton of lithium ore
Full cost per ton of ore production: it is the sum of mining, beneficiation and raw ore transportation costs, enterprise management, concentrate sales, mine maintenance and inspection, and mineral right use allocated per ton of raw ore.
Mining cost: i.e. ore drawing cost.
For different mining methods (open pit mining and in-situ mining), open pit mining is generally 10-30 yuan. According to different development methods (shaft, inclined shaft, adit), drainage and mining methods of underground mining all affect the mining cost. At present, the general pit mining cost is 20-70 yuan/ton.
Beneficiation cost: because spodumene beneficiation has high requirements on water quality and long beneficiation path. The beneficiation cost is higher than that of other ores. The beneficiation cost is restricted by ore washability, mainly including the consumption of beneficiation reagent (70-100 yuan) and ball mill steel ball, tailings treatment and transportation costs (the trend is dry sand stacking and cemented filling). At present, the production cost of general stone preparation plants is 150-300 yuan/ton.
Raw ore transportation cost: the transportation cost of raw ore from the pit head to the concentrator. Depending on the distance. Items are generally 10-50 yuan.
Enterprise management fee: generally, the management level and personnel of enterprise management fee are 10-20 yuan/ton.
Concentrate sales fee: all expenses for transporting the concentrate from the mine concentrator to the place of delivery of the smelter. Due to the distance between lithium mine origin and lithium salt plant. In China, most of them are imported or transported to lithium salt plants from Xinjiang, Sichuan and other places of origin. The prices vary greatly due to different places of sale, and the foreign concentrates cost thousands of yuan. If low-grade raw ore is sold, the sales radius should generally be considered.
Taxes and fees: lithium ore is China's strategic resource. Imported lithium ore is exempt from customs duties, and sales of lithium ore are subject to 13% value-added tax.
Mine maintenance and inspection fee: according to the regulations of the Ministry of Finance in China, since 2004, the mine maintenance and inspection fee of 15-18 yuan per ton of raw ore has been extracted to support simple reproduction. In foreign countries, it is considered according to the actual situation of the mine and the laws and regulations of the country.
Mineral right use fee: the resource compensation fee, resource use fee, etc. required to be paid by the national and local governments, equivalent to the cost per ton of ore. If the sky high price lithium ore is generated through bidding, auction and listing, the cost of this one may be very high.
2、 Concentrate produced
The amount of concentrate produced per ton of raw ore (equivalent to metal tons) depends on the mining dilution rate and beneficiation recovery rate.
Mining dilution rate: different according to open pit mining and pit mining. The dilution rate of open pit mining is generally 5-15%, and the dilution rate varies due to different ore body occurrence conditions, different mining methods and management levels. At present, the dilution rate of pit mining in China is generally 10-25%.
Beneficiation recovery rate: the indicators of lithium ore are selected according to the beneficiation test results of the ore in the specific mining area, such as 60-90%.
Concentrate yield=(1-mining dilution rate) × Beneficiation recovery
3、 Concentrate sales price: the spot sales price of qualified concentrate is generally the weekly average price of three-month metal futures, multiplied by the price coefficient (60-85%).
4、 Minimum recoverable grade
For example, the cost of a spodumene ore is 50 yuan/ton, the beneficiation cost is 200 yuan/ton, the raw ore transportation cost is 30 yuan/ton, the enterprise management fee is 20 yuan/ton, the concentrate sales fee is 50 yuan/ton, the mine maintenance fee is 15 yuan/ton, and the mining right use fee is 100 yuan/ton, with a total production cost of 465 yuan/ton.
The mining dilution rate is 10%, and the beneficiation recovery rate is 55%, so the concentrate yield per ton of raw ore is 0.495%.
If 5% spodumene concentrate is 10000 yuan tons.
Then: spodumene concentrate 5% × Raw ore grade × Concentrate yield 72%=465 yuan
Raw ore grade=0.5%, i.e. mining grade (average grade of mining area) is 0.5%
Of course, this is only an ideal calculated value. When the grade of spodumene raw ore reaches 5%, the mineral processing recovery is calculated as 55%. (the concentration grade of lithium ore directly affects the beneficiation cost and recovery rate)
5、 Other issues
1. The recoverable grade is actually the break even point of normal production after the mine is completed and put into operation. If the mine construction funds (including the cost of purchasing mineral rights, power supply lines and step-down stations, equipment investment, land and forest water costs, roads, concentrator construction, mine infrastructure, office buildings, living facilities, safety facilities, etc.) are not recovered, in addition to repaying the principal, interest will also be paid. This part of interest is generally calculated at 10-20%, which accounts for a large proportion of the cost.
2. The methods to reduce production include (1) increasing production scale and (2) improving raw ore grade. The increase of production scale will reduce the production cost per ton of ore. This is mainly reflected in the reduction of enterprise management costs and scale production, and the reduction of mining and dressing costs.
Improve the grade of raw ore. It is to mine high-grade ore before mining in the production process to improve profits. This scheme should be put forward in the development and utilization scheme and preliminary design in combination with the distribution law and occurrence conditions of deposit grade. The advantage of this method is that it can rapidly increase the cash flow of the enterprise. The disadvantage is that it is easy to mine the rich and discard the poor, which is not conducive to the comprehensive development and utilization of resources, and it is difficult to mine in the later stage (use with caution according to the mine conditions).