Calculation and evaluation system and method for cost competitiveness of iron ore concentrate products of mine enterprises

Abstract

The invention discloses a system for calculating and evaluating cost competitiveness of iron ore concentrate products of mine enterprises. Comprising a historical data storage module, a current-period data acquisition module, an iron ore concentrate complete cost calculation module, a byproduct gross profit reduction module, a tax and additional adjustment module, an iron grade difference adjustment module and a 62% iron ore concentrate cost competitiveness index value conversion module. The invention further discloses a method for calculating and evaluating the cost competitiveness of the iron ore concentrate products of the mine enterprises. The traditional complete cost cannot reflect the iron grade difference value and associated by-product value among different mines, and the tax and addition are influenced by the fluctuation of the sales price, so that the cost is relatively distorted across periods. By means of the calculation and evaluation method, the 62% iron ore concentrate cost competitiveness index value is obtained through conversion, the influence of the factors can be eliminated, mining enterprise cost evaluation criteria of different resource endowments and different management levels are unified, and therefore the real cost competitiveness level of a mine is accurately reflected.

Description

Technical Field

[0001] This invention relates to cost accounting technology, and more particularly to a system and method for calculating and evaluating the cost competitiveness of iron concentrate products in mining enterprises. Background Technology

[0002] As the world's largest consumer and importer of iron ore, China imports over 1 billion tons of iron ore annually, with an external dependence rate of about 80%. This highlights the structural contradictions in resource supply and underscores the urgent need to improve China's ability to be self-reliant and controllable in terms of resources.

[0003] Currently, China's steel industry has entered a long-term phase of reduced production, leading to a structural decline in iron ore demand. Meanwhile, the commissioning of new iron ore projects overseas will inevitably increase the supply of high-quality iron ore, significantly altering the global iron ore supply landscape. Consequently, this shift in supply and demand will drive iron ore prices into a downward trend. In this fiercely competitive market, the cost competitiveness of domestic mining companies will be a key competitive factor in their ability to withstand market shocks and survive.

[0004] In China, most mining regions and metallurgical mining associations still base their iron concentrate cost accounting on the traditional concept of full cost. Full costing refers to the broad definition of total cost and expenses, meaning that all costs incurred during the production process are included in the product cost accounting. This typically includes: material costs, labor costs, and various manufacturing overheads directly attributable to the specific product (i.e., production costs); and expenses not directly attributable to the specific product are listed as period expenses. Therefore, full cost includes:

[0005] 1. Production costs: material costs, labor costs, manufacturing overhead, etc.;

[0006] 2. Period expenses: selling expenses, administrative expenses, research and development expenses, and financial expenses;

[0007] 3. Taxes and surcharges.

[0008] Unit total cost = Total cost for the current period / Output of the main product for the current period.

[0009] The full costing method described above helps managers understand the composition of product costs more comprehensively based on accurate and complete data. However, this method fails to adequately consider the following issues: 1. The selling price of iron concentrate is adjusted based on factors such as grade, and the cost of producing iron concentrate of different grades varies. 2. The value of associated byproducts such as sulfur, copper, and gold. 3. Resource taxes and surcharges fluctuate with changes in selling prices, thus affecting full costs; such fluctuations are not conducive to long-term intertemporal comparisons.

[0010] Therefore, the existing full cost method cannot fully reflect the true cost competitiveness of mines with different resource endowments and different management levels. Summary of the Invention

[0011] To address the aforementioned problems in the prior art, this invention provides a calculation and evaluation system and method for the cost competitiveness of iron concentrate products in mining enterprises. By converting the cost competitiveness index value of 62% iron concentrate, it can reflect the true cost competitiveness level of the mine.

[0012] On the one hand, a calculation and evaluation system for the cost competitiveness of iron concentrate products of mining enterprises includes:

[0013] The historical data storage module stores and retrieves Platts indices for iron ore with grades of 58%, 62%, and 65% over the past ten years, the average exchange rate of USD to RMB over the past three years, and the average actual selling price of iron concentrate over the past ten years.

[0014] The current data acquisition module collects current production and financial data, including current iron concentrate production costs, period expenses, taxes and surcharges, iron concentrate output, actual iron concentrate grade, and current by-product revenue and by-product costs.

[0015] The iron concentrate full cost calculation module calculates the unit full cost of iron concentrate for the current period based on the current iron concentrate production cost, period expenses, taxes and surcharges, and iron concentrate output.

[0016] The by-product gross profit reduction module calculates the amount of iron concentrate cost reduced by the by-product gross profit in the current period based on the by-product revenue and cost and the iron concentrate output.

[0017] The Taxes and Surcharges Adjustment module calculates the unit tax and surcharge adjustment amount for the current period based on the Platts index of 62% grade iron ore over the past ten years, current taxes and surcharges, and iron concentrate production.

[0018] The iron grade difference adjustment module calculates the current iron grade difference adjustment amount based on the actual grade of iron concentrate and the Platts index difference of iron ore over the past ten years.

[0019] The 62% iron concentrate cost competitiveness conversion module calculates the 62% iron concentrate cost competitiveness index value based on the calculated current period's total unit cost of iron concentrate, the current period's amount of by-product gross profit offsetting the unit cost of iron concentrate, the current period's amount of unit tax and surcharge adjustment, and the current period's amount of iron grade difference adjustment.

[0020] The iron concentrate full cost calculation module executes the following calculation logic:

[0021] Current period total cost of iron concentrate = current period production cost of iron concentrate + period expenses + taxes and surcharges;

[0022] Current period unit total cost of iron concentrate = Current period total cost of iron concentrate / Iron concentrate output.

[0023] The by-product gross profit reduction module performs the following calculation logic:

[0024] The amount by which the gross profit of by-products reduces the unit cost of iron concentrate in the current period = Σ(current period by-product revenue - by-product cost) / iron concentrate output.

[0025] The tax and surcharge adjustment module performs the following calculation logic:

[0026] Current period unit tax and surcharge adjustment amount = Current period tax and surcharge / Iron concentrate output - Unit tax and surcharge payable based on the average iron ore index of 62% over the past ten years.

[0027] The iron grade difference adjustment module performs the following calculation logic:

[0028] When the actual grade of iron concentrate is ≥65%:

[0029] Current iron grade difference adjustment amount = [the difference between 65% and 62% iron ore Platts index in the past ten years + (actual iron concentrate grade - 65%) / 65% × 65% iron ore Platts index in the past ten years] × average USD / CNY exchange rate in the past three years × adjustment coefficient;

[0030] 62% ≤ when the actual grade of iron concentrate is <65%

[0031] Current iron grade difference adjustment amount = (actual iron concentrate grade - 62%) / 62% × Platts iron ore index of 62% over the past ten years × average exchange rate of USD to RMB over the past three years × adjustment coefficient;

[0032] When the actual grade of iron concentrate is less than 62%, determine whether the actual sale of iron concentrate is based on the Platts index:

[0033] If not, the current iron grade difference adjustment amount = (average actual selling price of iron concentrate in the past ten years / average exchange rate of USD to RMB in the past three years - Platts 62% iron ore index in the past ten years) × average exchange rate of USD to RMB in the past three years;

[0034] If so, the current iron grade difference adjustment amount = [the difference between the 58% and 62% iron ore Platts indexes over the past ten years + (actual iron concentrate grade - 58%) / 58% × the 58% iron ore Platts index over the past ten years] × the average exchange rate of USD to RMB over the past three years × adjustment coefficient.

[0035] The adjustment factor is set between 70% and 100%.

[0036] The 62% iron concentrate cost competitiveness conversion module performs the following calculation logic:

[0037] The cost competitiveness index value of 62% iron concentrate is calculated as follows: (current period unit total cost of iron concentrate - current period by-product gross profit offset against unit cost of iron concentrate - current period unit tax and surcharge adjustment - current period iron grade difference adjustment) / average exchange rate of USD to RMB over the past three years.

[0038] On the other hand, a computational evaluation method for a computational evaluation system includes the following steps:

[0039] A. Store and retrieve Platts indices for 58%, 62%, and 65% grade iron ore over the past ten years, the average USD / CNY exchange rate over the past three years, and the average actual selling price of iron concentrate over the past ten years;

[0040] B. Collect current production and financial data, including current iron concentrate production costs, period expenses, taxes and surcharges, iron concentrate output, actual iron concentrate grade, and current by-product revenue and by-product costs;

[0041] C. Calculate the unit total cost of iron concentrate for the current period based on the current iron concentrate production cost, period expenses, taxes and surcharges, and iron concentrate output;

[0042] D. Based on the current period's by-product revenue and by-product cost, and iron concentrate output, calculate the amount by which the current period's by-product gross profit reduces the unit iron concentrate cost;

[0043] E. Calculate the unit tax and surcharge adjustment amount for the current period based on the Platts index of 62% grade iron ore over the past ten years, current taxes and surcharges, and iron concentrate production.

[0044] F. Calculate the current iron grade difference adjustment amount based on the actual grade of iron concentrate and the Platts index difference of iron ore over the past ten years;

[0045] G. Based on the calculated unit total cost of iron concentrate in the current period, the amount of the unit cost of iron concentrate reduced by the gross profit of by-products in the current period, the unit tax and surcharge adjustment amount in the current period, and the iron grade difference adjustment amount in the current period, calculate the cost competitiveness index value of 62% iron concentrate.

[0046] A computer-readable storage medium storing a computer program that, when executed by computation, implements the computational evaluation method of claim 8.

[0047] An electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the program to implement the computational evaluation method of claim 8.

[0048] The calculation and evaluation system and method for the cost competitiveness of iron concentrate products in mining enterprises, as described in this invention, has the following advantages:

[0049] 1. It can reflect the value of iron grade differences, the value of associated by-products, and reduce the impact of sales price fluctuations on cost calculation, thereby more accurately reflecting the true cost competitiveness of mining enterprises under different resource endowments and management levels, and facilitating inter-period comparisons.

[0050] 2. It can solve the problem of measuring the capabilities of different mining enterprises. It can establish a cross-enterprise comparable cost evaluation system, focus on cultivating long-term competitive advantages, enhance market competitiveness, and safeguard the strategic security of the national steel industry. Attached Figure Description

[0051] Figure 1 This is a flowchart of the calculation and evaluation method of the present invention. Detailed Implementation

[0052] The following is a further description of a calculation and evaluation system for the cost competitiveness of iron concentrate products in mining enterprises, based on the present invention.

[0053] The calculation and evaluation system mainly includes: a historical data storage module, a current data acquisition module, an iron concentrate full cost calculation module, a by-product gross profit reduction module, a tax surcharge adjustment module, an iron grade difference adjustment module, and a 62% iron concentrate cost competitiveness conversion module. Among these,

[0054] The historical data storage module is used to store and retrieve Platts indices for 58%, 62%, and 65% grade iron ore over the past ten years (the ten years preceding the current year), the average USD / CNY exchange rate over the past three years (also the three years preceding the current year), and the average actual selling price of iron concentrate over the past ten years. The adjustment coefficient is set between 70% and 100%, with a preferred value of 80%.

[0055] The current period data acquisition module is used to collect current production and financial data, including current iron concentrate production costs, period expenses, taxes and surcharges, iron concentrate output, actual iron concentrate grade, and current by-product revenue and costs. In the financial field, "current period" typically refers to a production period that has already occurred, such as one month, one quarter, half a year, or one year, and its current production data represents actual data. However, in this invention, it can also be a future forecast period. To use this invention to predict and evaluate future cost competitiveness in the forecast period, corresponding settings and adjustments can be made based on the actual data to obtain the production and financial data for the forecast period.

[0056] The iron concentrate full cost calculation module is used to calculate the current period's iron concentrate unit full cost based on the current period's iron concentrate production cost, period expenses, taxes and surcharges, and iron concentrate output. Its specific calculation logic is as follows: Current period iron concentrate full cost = Current period iron concentrate production cost + Period expenses + Taxes and surcharges; Current period iron concentrate unit full cost = Current period iron concentrate full cost / Iron concentrate output.

[0057] The by-product gross profit reduction module is used to calculate the amount of by-product gross profit reduction per unit of iron concentrate based on the current period's by-product revenue, by-product cost, and iron concentrate output. Its specific calculation logic is: Current period by-product gross profit reduction per unit of iron concentrate = Σ(Current period by-product revenue - by-product cost) / Iron concentrate output.

[0058] The Taxes and Surcharges Adjustment module is used to calculate the current unit tax and surcharge adjustment amount based on the Platts index of 62% grade iron ore over the past ten years, current taxes and surcharges, and iron concentrate production. Its specific calculation logic is as follows: Current unit tax and surcharge adjustment amount = Current taxes and surcharges / Iron concentrate production - Unit taxes and surcharges payable according to the average Platts index of 62% grade iron ore over the past ten years.

[0059] The iron grade difference adjustment module is used to calculate the current iron grade difference adjustment amount based on the actual grade of iron concentrate and the Platts index difference of iron ore over the past ten years; it specifically executes the following calculation logic:

[0060] Table 1 shows the Platts index range for iron ore from 2013 to 2022.

[0061] Table 1: Platts Index Variation Table (Unit: USD / ton)

[0062] S&P 500 level Indicator values ​​from 2013 to 2022 With a 62% difference 65% S&P 500 110.52 110.52-96.96＝13.56 62% of the S&P 500 96.96 58% S&P 500 75.64 75.64-96.96＝-21.33

[0063] The Platts index difference for iron ore is the difference between the index values ​​of two Platts indices.

[0064] When the actual grade of iron concentrate is ≥65%:

[0065] Current iron grade difference adjustment amount = [the difference between 65% and 62% iron ore Platts index in the past ten years + (actual iron concentrate grade - 65%) / 65% × 65% iron ore Platts index in the past ten years] × average USD / CNY exchange rate in the past three years × adjustment coefficient;

[0066] 62% ≤ when the actual grade of iron concentrate is <65%

[0067] Current iron grade difference adjustment amount = (actual iron concentrate grade - 62%) / 62% × Platts iron ore index of 62% over the past ten years × average exchange rate of USD to RMB over the past three years × adjustment coefficient;

[0068] When the actual grade of iron concentrate is less than 62%, determine whether the actual sale of iron concentrate is based on the Platts index:

[0069] If not, the current iron grade difference adjustment amount = (average actual selling price of iron concentrate over the past ten years / average USD / CNY exchange rate over the past three years - Platts 62% iron ore index over the past ten years) × average USD / CNY exchange rate over the past three years; average actual selling price of iron concentrate over the past ten years

[0070] If so, the current iron grade difference adjustment amount = [the difference between the 58% and 62% iron ore Platts indexes over the past ten years + (actual iron concentrate grade - 58%) / 58% × the 58% iron ore Platts index over the past ten years] × the average exchange rate of USD to RMB over the past three years × adjustment coefficient.

[0071] It should be noted that in the iron ore concentrate sales sector, pricing is generally based on the Platts index as a benchmark. However, there are a few transaction scenarios that do not directly use the Platts index for pricing. Specifically:

[0072] When the iron concentrate grade is close to 65%, the 65% Platts index is usually used as the benchmark for pricing by the ton.

[0073] When the iron concentrate grade is close to 62%, the 62% Platts index is usually used as the benchmark for pricing per ton.

[0074] For iron concentrate with significantly low grades, a fixed price mechanism agreed upon in the contract may be used directly, without being linked to the Platts index, but such cases account for a relatively small proportion of the overall transactions.

[0075] In addition, considering the actual situation such as discounted sales, the differential may not be fully realized. Based on the actual sales situation, the adjustment coefficient is set to be 70%-100%, with 80% being the optimal value.

[0076] The 62% iron concentrate cost competitiveness conversion module is used to calculate the 62% iron concentrate cost competitiveness index value based on the calculated current period unit total cost of iron concentrate, the current period by-product gross profit offsetting the unit iron concentrate cost, the current period unit tax and surcharge adjustment amount, and the current period iron grade difference adjustment amount. Its specific calculation logic is: 62% iron concentrate cost competitiveness index value = (Current period unit total cost of iron concentrate - Current period by-product gross profit offsetting the unit iron concentrate cost - Current period unit tax and surcharge adjustment amount - Current period iron grade difference adjustment amount) / Average USD / CNY exchange rate over the past three years.

[0077] The present invention adopts the calculation and evaluation method of the above-mentioned calculation and evaluation system, aiming to convert the total cost of iron concentrate produced in the current period into a 62% iron concentrate cost competitiveness index value.

[0078] The Platts iron ore index, developed and published by Platts, is a series of daily price indices used to assess the price level of the iron ore spot market. It is the most influential and widely adopted pricing benchmark in global iron ore trading. Currently, it typically uses 62% pricing. Platts will later publish a 61% index, and if the iron ore settlement system is adjusted later, it will be adjusted according to international standards (e.g., if priced at 61%, it can be converted into a 61% iron concentrate full cost competitiveness index value).

[0079] The calculation and evaluation method for converting the cost competitiveness index of 62% iron concentrate mainly needs to consider the following issues: ① reducing the gross profit of the approved by-products in the current period; ② converting taxes and surcharges according to the average Platts index of 62% iron ore in the past ten years; ③ adjusting the total cost of iron concentrate according to the difference between the actual grade of the product and the Platts index of 62% grade iron ore in the past ten years.

[0080] Therefore, the principle of the computational evaluation method of the present invention is the same as that of the evaluation system described above, specifically as follows: Figure 1 As shown, it includes the following steps:

[0081] A. Store and retrieve Platts indices for 58%, 62%, and 65% grade iron ore over the past ten years, the average USD / CNY exchange rate over the past three years, and the average actual selling price of iron concentrate over the past ten years;

[0082] B. Collect current production and financial data, including current iron concentrate production costs, period expenses, taxes and surcharges, iron concentrate output, actual iron concentrate grade, and current by-product revenue and by-product costs;

[0083] C. Calculate the unit total cost of iron concentrate for the current period based on the current iron concentrate production cost, period expenses, taxes and surcharges, and iron concentrate output; the calculation formula is: current iron concentrate total cost = current iron concentrate production cost + period expenses + taxes and surcharges; current iron concentrate unit total cost = current iron concentrate total cost / iron concentrate output;

[0084] D. Based on the current period's by-product revenue and by-product cost, and iron concentrate output, calculate the amount by which the current period's by-product gross profit reduces the unit iron concentrate cost;

[0085] Calculation formula: The amount by which the gross profit of by-products approved in the current period reduces the unit cost of iron concentrate = Σ(current period by-product revenue - by-product cost) / iron concentrate output.

[0086] Note: The gross profit of the main by-products of each production unit is calculated by subtracting the cost allocated using the approved unit price from the actual revenue; other by-products are deducted based on the actual gross profit of the current period.

[0087] The purpose of this reduction is to encourage the recovery of high-value by-products. In mineral processing design, the determination of the separation sequence should be based on a comprehensive economic value assessment: when the comprehensive value of by-products (such as copper containing gold and silver) is higher than that of the main product (such as iron), the by-products should be separated first, even though this process may result in a partial loss of the main product's output, the overall economic benefits are better; conversely, if the value of the main product is significantly higher than that of the by-products, the main product should be separated first to ensure that its output is not affected, while also taking into account the recovery of by-products, thereby achieving optimal resource utilization.

[0088] E. Calculate the unit tax and surcharge adjustment amount for the current period based on the Platts index of 62% grade iron ore over the past ten years, current taxes and surcharges, and iron concentrate production.

[0089] The calculation formula is: Current period unit tax and surcharge adjustment amount = Current period tax and surcharge / Iron concentrate output - Unit tax and surcharge payable based on the average iron ore index of 62% over the past ten years.

[0090] Note: Resource tax, urban maintenance and construction tax, education surcharge, and local education surcharge fluctuate with changes in sales prices, thus affecting total costs. Therefore, the taxes and surcharges here are adjusted to the unit taxes and surcharges payable based on the average Platts index for 62% iron ore over the past ten years. This avoids the impact of sales price changes on costs and facilitates stable inter-period comparisons. For example, if a mine's resource tax rate is 3%, the average Platts index for 62% iron ore over the past ten years is $96.96 / ton, and the average Platts index for 65% iron ore is $110.52 / ton, the difference between the 65% and 62% iron ore Platts indexes is $13.56 / ton, the actual iron grade is 65.2%, and the average USD / CNY exchange rate over the past three years is 6.692, then theoretically, the sales price corresponding to the average Platts index for 62% iron ore over the past ten years would be [96.96 + (13.56 + (65.2% - 65%) / 65% × 1] [10.52] × 6.692 = 741.88 yuan / ton, Unit resource tax payable = 741.88 yuan / ton × 3% = 22.26 yuan / ton. The difference between the actual unit resource tax and the unit resource tax payable is the resource tax adjustment amount. Urban maintenance and construction tax, education surcharge, and local education surcharge are calculated using the same logic (taxes and fees unrelated to revenue are not included in the adjustment). The sum of these corresponding unit taxes and surcharges is the unit tax and surcharges payable based on the average iron ore index of 62% over the past ten years.

[0091] F. Calculate the current iron grade difference adjustment amount based on the actual grade of iron concentrate and the Platts index difference of iron ore over the past ten years;

[0092] Current iron grade difference adjustment: This adjustment is made to the total cost of iron concentrate based on product grade and the Platts iron ore index differences over the past ten years. Based on the "accountability-based management" principle, production of higher-grade iron concentrate is encouraged when the premium for producing it can cover the cost increase; otherwise, production of lower-grade concentrate meeting quality standards should be based on sales contracts. The calculation formula is as follows:

[0093] When the actual grade of iron concentrate is ≥65%:

[0094] Current iron grade difference adjustment amount = [the difference between 65% and 62% iron ore Platts index in the past ten years + (actual iron concentrate grade - 65%) / 65% × 65% iron ore Platts index in the past ten years] × average USD / CNY exchange rate in the past three years × adjustment coefficient;

[0095] 62% ≤ when the actual grade of iron concentrate is <65%

[0096] Current iron grade difference adjustment amount = (actual iron concentrate grade - 62%) / 62% × Platts iron ore index of 62% over the past ten years × average exchange rate of USD to RMB over the past three years × adjustment coefficient;

[0097] When the actual grade of iron concentrate is less than 62%, determine whether the actual sale of iron concentrate is based on the Platts index:

[0098] If not, the current iron grade difference adjustment amount = (average actual selling price of iron concentrate in the past ten years / average exchange rate of USD to RMB in the past three years - Platts 62% iron ore index in the past ten years) × average exchange rate of USD to RMB in the past three years;

[0099] If so, the current iron grade difference adjustment amount = [the difference between the 58% and 62% iron ore Platts indexes over the past ten years + (actual iron concentrate grade - 58%) / 58% × the 58% iron ore Platts index over the past ten years] × the average exchange rate of USD to RMB over the past three years × adjustment coefficient.

[0100] The adjustment factor is set between 70% and 100%, with a preferred value of 80%.

[0101] G. Based on the calculated current period's total unit cost of iron concentrate, the current period's reduction of unit iron concentrate cost by by-product gross profit, the current period's unit tax and surcharge adjustment, and the current period's iron grade difference adjustment, calculate the 62% iron concentrate cost competitiveness index value. The calculation formula is:

[0102] The cost competitiveness index value of 62% iron concentrate is calculated as follows: (current period unit total cost of iron concentrate - current period by-product gross profit offset against unit cost of iron concentrate - current period unit tax and surcharge adjustment - current period iron grade difference adjustment) / average exchange rate of USD to RMB over the past three years.

[0103] The following are specific examples to illustrate this:

[0104] In 2023, the iron concentrate production unit a1 of regional company A under a certain group had an iron concentrate production cost of RMB 1,032,429,200, period expenses of RMB 436,783,800, taxes and surcharges of RMB 89,076,000, iron concentrate output of 3,037,400 tons, and an actual iron concentrate grade of 64.77%. The by-product revenue and by-product cost for the period were RMB 343,985,600 and RMB 277,188,600, respectively.

[0105] From 2013 to 2022, the Platts indices for 58%, 62%, and 65% grade iron ore were $75.64 / ton, $96.96 / ton, and $110.52 / ton, respectively. The difference between the Platts indices for 58% and 62% grade iron ore was $75.64 - $96.96 = -$21.33 / ton, and the difference between the Platts indices for 65% and 62% grade iron ore was $110.52 - $96.96 = $13.56 / ton (adjusted by a factor of 80%). The average exchange rate of USD to CNY over the past three years was 6.692.

[0106] The following results are obtained through the calculation and evaluation method of this invention:

[0107] The total cost of iron concentrate in the current period = RMB 103,242,920 + RMB 43,678,380 + RMB 8,907,600 = RMB 155,828,900;

[0108] The total unit cost of iron concentrate in the current period = 1,558,289,000 yuan / 3,037,400 tons = 513.03 yuan / ton;

[0109] The amount by-product gross profit that reduces the unit iron concentrate cost in the current period = (343.9856 million yuan - 277.1886 million yuan) / 3.0374 million tons = 21.99 yuan / ton;

[0110] Current period unit tax and surcharge adjustment amount = 89.076 million yuan / 3.0374 million tons - 13.95 yuan / ton = 15.38 yuan / ton;

[0111] Current iron grade difference adjustment amount = [13.56 + (64.77% - 65%) × 110.52 / 65%] × 6.692 × 80% = 70.51 yuan / ton;

[0112] The cost competitiveness index of 62% grade iron concentrate is calculated as follows: (513.03 yuan / ton - 21.99 yuan / ton - 15.38 yuan / ton - 70.51 yuan / ton) = 405.15 yuan / ton = 60.54 US dollars / ton.

[0113] Similarly, using the same method, the cost competitiveness index values ​​of the remaining regional companies and their production units under the group, converted to 62% grade iron concentrate, were calculated. Please refer to Table 2 for details.

[0114] Table 2: Detailed List of Cost Competitiveness Indicators of a Certain Group in 2023 Converted to 62% Iron Concentrate

[0115]

[0116]

[0117] Based on traditional full cost calculations, the cost ranking of the group's domestic mines is shown in column 4 of Table 2:

[0118] Regional Company D's total cost is 341 yuan / ton, ranking first in total cost. However, because D's iron concentrate grade is 55.4% (lower than the standard 62%), after adjusting for iron grade difference and converting to a 62% cost competitiveness index value, its ranking drops to 7th. In contrast, Regional Company B's production mine b1 has a total cost of 622 yuan / ton, ranking 8th in total cost. However, b1 has abundant by-products such as copper, sulfur, and gold. After deducting by-product gross profit and converting to a 62% cost competitiveness index value, its competitiveness ranking jumps to 3rd. Therefore, the ranking using the calculation and evaluation method of this invention better reflects the true competitiveness of mines with different endowments. This has positive significance for the group in effectively establishing a cross-enterprise comparable cost evaluation system, focusing on cultivating long-term competitive advantages, enhancing market competitiveness, and ensuring the strategic security of the national steel industry.

[0119] Of course, the calculation and evaluation method of the present invention can also perform horizontal and vertical comparisons of different production time periods, as shown in Table 3:

[0120] Table 3: Trend of Cost Competitiveness Index Values ​​for a Certain Group Converted to 62% Iron Concentrate (USD / ton)

[0121]

[0122]

[0123] Table 3 shows the cost competitiveness of each production unit within the group, as well as the unit itself, over the years, allowing for more scientific adjustments to cost control in later production.

[0124] The cost competitiveness index value of 62% iron concentrate calculated by this invention can guide enterprises in adjusting production and operation and controlling costs, for example:

[0125] In 2024, the cost competitiveness index of production unit a3 of a certain group's regional company (converted to 62% iron concentrate) was US$55.1 / ton. However, in 2025, due to a significant increase in the market value of sulfur, a3 actively improved its production process, increased the recovery rate of valuable sulfur resources, reduced the sulfur content in concentrate and tailings, and significantly improved the gross profit of by-products, thus achieving a substantial improvement in cost competitiveness. Simultaneously, it reduced deductions for excessive sulfur content in iron concentrate. (See Table 4.)

[0126] Table 4: Trend of Cost Competitiveness Index Values ​​of a Certain Group's A3 Production Unit Converted to 62% Iron Concentrate

[0127]

[0128] In addition to facilitating the evaluation of comparable costs across enterprises, it can also serve as a cost evaluation tool for individual companies. Specifically, after converting its current value to a 62% iron ore concentrate cost competitiveness index, it can be compared with a predetermined threshold. This threshold could be set as the landed cost of the four major international mining giants (iron grade difference also converted to 62% iron ore concentrate cost competitiveness: referring to industry report data from the first half of 2025, Rio Tinto was approximately $49 / ton; BHP Billiton approximately $43 / ton; FMG approximately $54 / ton; Vale approximately $62 / ton; however, it should be noted that these data are time-sensitive and may be updated with market changes).

[0129] Thresholds can also be obtained through stress testing based on supply and demand. For example, according to CRU data, global iron ore production is projected to reach approximately 2.1 billion tons in 2025. If demand decreases by 500 million tons, it will lead to oversupply and price declines, causing the landed cost of overseas ore to reach $61.7 per ton. At this point, mines with cost competitiveness indicators higher than this level will not have a competitive advantage. Therefore, improvements need to be implemented in cost control and production strategy optimization. Further cost forecasting can be conducted to achieve target costs, thereby guiding future adjustments to production indicators.

[0130] The present invention also provides a computer-readable storage medium storing a computer program that, when executed by a computer, implements the above-described computational evaluation method.

[0131] Similarly, the present invention also provides an electronic device including a memory and a processor, the memory storing a computer program, and the processor executing the program to implement the above-described calculation and evaluation method.

[0132] However, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Any changes or modifications to the above embodiments that are within the essential spirit of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A calculation and evaluation system for the cost competitiveness of iron concentrate products in mining enterprises, characterized in that, include: The historical data storage module stores and retrieves the Platts index and its value for iron ore with grades of 58%, 62%, and 65% over the past ten years, the average exchange rate of USD to RMB over the past three years, and the average actual sales price of iron concentrate over the past ten years. The current data acquisition module collects current production and financial data, including current iron concentrate production costs, period expenses, taxes and surcharges, iron concentrate output, actual iron concentrate grade, and current by-product revenue and by-product costs. The iron concentrate full cost calculation module calculates the unit full cost of iron concentrate for the current period based on the current iron concentrate production cost, period expenses, taxes and surcharges, and iron concentrate output. The by-product gross profit reduction module calculates the amount of iron concentrate cost reduced by the by-product gross profit in the current period based on the by-product revenue and cost and the iron concentrate output. The Taxes and Surcharges Adjustment module calculates the unit tax and surcharge adjustment amount for the current period based on the Platts index of 62% grade iron ore over the past ten years, current taxes and surcharges, and iron concentrate production. The iron grade difference adjustment module calculates the current iron grade difference adjustment amount based on the actual grade of iron concentrate and the Platts index difference of iron ore over the past ten years. The 62% iron concentrate cost competitiveness conversion module calculates the 62% iron concentrate cost competitiveness index value based on the calculated current period's total unit cost of iron concentrate, the current period's amount of by-product gross profit offsetting the unit cost of iron concentrate, the current period's amount of unit tax and surcharge adjustment, and the current period's amount of iron grade difference adjustment.

2. The calculation and evaluation system for the cost competitiveness of iron concentrate products in mining enterprises as described in claim 1, characterized in that, The iron concentrate full cost calculation module executes the following calculation logic: Current period total cost of iron concentrate = current period production cost of iron concentrate + period expenses + taxes and surcharges; Current period unit total cost of iron concentrate = Current period total cost of iron concentrate / Iron concentrate output.

3. The calculation and evaluation system for the cost competitiveness of iron concentrate products in mining enterprises as described in claim 2, characterized in that, The by-product gross profit reduction module performs the following calculation logic: The amount by which the gross profit of by-products reduces the unit cost of iron concentrate in the current period = Σ(current period by-product revenue - by-product cost) / iron concentrate output.

4. The calculation and evaluation system for the cost competitiveness of iron concentrate products in mining enterprises as described in claim 3, characterized in that: The tax and surcharge adjustment module performs the following calculation logic: Current period unit tax and surcharge adjustment amount = Current period tax and surcharge / Iron concentrate output - Unit tax and surcharge payable based on the average iron ore index of 62% over the past ten years.

5. The calculation and evaluation system for the cost competitiveness of iron concentrate products of mining enterprises as described in claim 4, characterized in that: The iron grade difference adjustment module performs the following calculation logic: When the actual grade of iron concentrate is ≥65%: Current iron grade difference adjustment amount = [the difference between 65% and 62% iron ore Platts index in the past ten years + (actual iron concentrate grade - 65%) / 65% × 65% iron ore Platts index in the past ten years] × average USD / CNY exchange rate in the past three years × adjustment coefficient; 62% ≤ when the actual grade of iron concentrate is <65% Current iron grade difference adjustment amount = (actual iron concentrate grade - 62%) / 62% × Platts iron ore index of 62% over the past ten years × average exchange rate of USD to RMB over the past three years × adjustment coefficient; When the actual grade of iron concentrate is less than 62%, determine whether the actual sale of iron concentrate is based on the Platts index: If not, the current iron grade difference adjustment amount = (average actual selling price of iron concentrate in the past ten years / average exchange rate of USD to RMB in the past three years - Platts 62% iron ore index in the past ten years) × average exchange rate of USD to RMB in the past three years; If so, the current iron grade difference adjustment amount = [the difference between the 58% and 62% iron ore Platts indexes over the past ten years + (actual iron concentrate grade - 58%) / 58% × the 58% iron ore Platts index over the past ten years] × the average exchange rate of USD to RMB over the past three years × adjustment coefficient.

6. The calculation and evaluation system for the cost competitiveness of iron concentrate products in mining enterprises as described in claim 5, characterized in that: The adjustment factor is set between 70% and 100%.

7. The calculation and evaluation system for the cost competitiveness of iron concentrate products in mining enterprises as described in claim 6, characterized in that: The 62% iron concentrate cost competitiveness conversion module performs the following calculation logic: The cost competitiveness index value of 62% iron concentrate is calculated as follows: (current period unit total cost of iron concentrate - current period by-product gross profit offset against unit cost of iron concentrate - current period unit tax and surcharge adjustment - current period iron grade difference adjustment) / average exchange rate of USD to RMB over the past three years.

8. The computational evaluation method for the computational evaluation system as described in any one of claims 1-7, characterized in that, Includes the following steps: A. Collect Platts indices for 58%, 62%, and 65% grade iron ore over the past ten years, the average USD / CNY exchange rate over the past three years, and the average actual selling price of iron concentrate over the past ten years; B. Collect current production and financial data, including current iron concentrate production costs, period expenses, taxes and surcharges, iron concentrate output, actual iron concentrate grade, and current by-product revenue and by-product costs; C. Calculate the unit total cost of iron concentrate for the current period based on the current iron concentrate production cost, period expenses, taxes and surcharges, and iron concentrate output; D. Based on the current period's by-product revenue and by-product cost, and iron concentrate output, calculate the amount by which the current period's by-product gross profit reduces the unit iron concentrate cost; E. Calculate the unit tax and surcharge adjustment amount for the current period based on the Platts index of 62% grade iron ore over the past ten years, current taxes and surcharges, and iron concentrate production. F. Calculate the current iron grade difference adjustment amount based on the actual grade of iron concentrate and the Platts index difference of iron ore over the past ten years; G. Based on the calculated unit total cost of iron concentrate in the current period, the amount of the unit cost of iron concentrate reduced by the gross profit of by-products in the current period, the unit tax and surcharge adjustment amount in the current period, and the iron grade difference adjustment amount in the current period, calculate the cost competitiveness index value of 62% iron concentrate.

9. A computer-readable storage medium storing a computer program, characterized in that, When the program is executed, it implements the computational evaluation method of claim 8.

10. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and when the processor executes the program, it implements the computational evaluation method of claim 8.

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