A method to establish a model for characterizing the change of coal blending cost

Abstract

The invention discloses a method for establishing a model representing the change of coal blending cost. The method includes the following steps: 1) Selecting a coal blending plan with stable coke quality as a benchmark coal blending plan, and adjusting the coal blending plan on this basis; 2) Selecting a blending coal quality control index, and controlling the adjusted blending coal The quality index is within a certain range to stabilize the coke quality; 3) Calculate the change of coal cost after adjusting the coal blending plan; 4) Calculate the change in income caused by the increase in coke output; 5) The change in income caused by the change in gas production rate; 6) Calculate After adjusting the coal blending scheme, the comprehensive change of coal blending cost. By using the calculation model of the comprehensive variation of coal blending cost established by the present invention, the coal blending plan can be formulated reasonably, the coal blending structure can be optimized, the cost of coal blending can be reduced, the coke output can be increased, and the amount of purchased coke can be reduced, so as to achieve the maximum cost reduction and efficiency increase change.

Description

technical field [0001] The invention belongs to the technical field of coking coal blending, and in particular relates to a method for establishing a model for characterizing changes in coal blending costs. Background technique [0002] Reducing the cost of raw materials is an important way for iron and steel enterprises to reduce costs and increase efficiency and promote survival and development. In recent years, due to the control of environmental protection emission indicators, the coke ovens of major iron and steel enterprises have limited production and their production capacity has been reduced. The coke produced by them cannot maintain the demand for blast furnaces. Therefore, iron and steel enterprises have to buy coke with soaring prices. Outsourced coke usually has poor quality stability and high price, which not only has a great impact on the raw material cost of the enterprise, but also has a great impact on the stable production of blast furnaces. [0003] For ...

AI Technical Summary

Problems solved by technology

In recent years, due to the control of environmental protection emission indicators, the production of coke ovens in the coking plants of major iron and steel enterprises has been limited and the production capacity has been reduced.

The purchased coke usually has poor quality stability and high price, which not only has a great impact on the raw material cost of the enterprise, but also has a great impact on the stable production of the blast furnace.

Images