Method for measuring and calculating cost performance of iron ore powder for sintering

Abstract

The invention provides a method for measuring and calculating the cost performance of iron ore powder for sintering. Comprising the following steps: step 1, calculation of a valuable grade: calculating the valuable grade according to chemical components and burning loss; 2, calculating a dry basis tax removal factory price; 3, calculating 1% valuable grade price and performance; and 4, calculating the cost performance. According to the invention, [Ti] and [Sn] are incorporated into cost performance measurement and calculation, so that the phosphorus and sulfur conversion coefficients are improved; according to the method for measuring and calculating the cost performance of the iron ore powder for sintering, the price participates in cost performance measurement and calculation, and the iron ore powder with the same performance and the lowest price embodies the high cost performance of the iron ore powder. According to the method disclosed by the invention, the cost performance calculation ranking is firstly carried out, and the specific ore blending characteristics are combined, so that the iron ore powder which is high in cost performance, can be blended in quantity, and is beneficial to environmental protection, prolonging of the service life of a blast furnace, improving of the steel performance and reducing of the processing cost is selected as much as possible for purchasing; and direct or indirect economic benefits are increased for iron and steel enterprises.

Description

technical field [0001] The invention relates to the field of iron making and sintering, in particular to the cost-effective calculation of iron ore powder for sintering. Background technique [0002] In recent years, under the influence of environmental protection, many domestic coal mines and iron mines have been gradually closed, and the prices of iron ore, coal and other resources used by iron and steel enterprises have continued to rise, resulting in a sharp rise in production costs. In the "predicament" period of meager profits or even losses. For this reason, the blast furnace ironmaking of many iron and steel enterprises has changed from the concentrated material policy to the economic ironmaking, accurately calculated the cost performance of iron ore powder, continuously optimized the ore blending structure, and adopted the economical ore blending route. [0003] At present, there are many methods for calculating the cost performance of iron ore, most of which are c...

AI Technical Summary

Problems solved by technology

[0020] (1) Some harmful residual elements (such as Ti and Sn) are not involved in the cost performance calculation, ignoring the impact on the quality of molten iron, blast furnace life, steel properties, etc.

[0021] (2) C in the formula 1 and C 2 It can be corrected and the value taken by experience has a great influence on the result, and the guidance is not strong

[0022] (3) The conversion coefficients of elements such as S, P, and Pb that affect the environment and Zn, Na, etc. that affect the furnace condition and the service life of the blast furnace are too small

[0023] (4) The price is not involved in the calculation of cost performance, and the price fluctuation has no impact on the results. The measurement system is not strong, and it has little significance for the guidance of purchasing decisions.

[0026] It can be seen that with the continuous advancement of sintering, ironmaking, steelmaking and environmental protection technologies and the continuous adjustment of industrial policies, especially for special steel smelting enterprises, this calculation method can no longer meet the current needs

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