Method for diagnosing blast furnace gas flow and improving smelting technical indexes

Abstract

The invention relates to a method for diagnosing blast furnace gas flow and improving smelting technical indexes. The method comprises the steps of current furnace top equipment and process smelting parameter calculation, smelting parameter and state checking, coal gas flow development degree judgment before adjustment, material distribution parameter calculation and evaluation, smooth degree and potential analysis, material distribution and in-furnace smelting parameter adjustment smelting and checking, actual smelting result return correction and the like. Based on blast furnace basic theories, according to characteristics of different raw materials, equipment, material distribution matrix parameters and smelting parameters, blast furnace gas flow distribution is quickly diagnosed by establishing a gas flow diagnosis method, quantitative processing is conducted on the mutual influence relation of control and technical index related data such as a material distribution system, an air supply system and a heat system when the problem of further excavation potential of the blast furnace is solved under the specific raw fuel condition, and then gas flow distribution is optimized, and the smooth degree of the blast furnace and the smelting technical index are improved; the method has the characteristics of simplicity, and quick and accurate control.

Description

technical field [0001] The invention belongs to the technical field of blast furnace smelting, and in particular relates to a method for diagnosing blast furnace gas flow and improving smelting technical indicators. Background technique [0002] Under the conditions of specific blast furnace technical equipment and raw materials and fuels, it is an eternal task for method engineering and blast furnace operation to intensify blast furnace smelting and obtain continuously improved economic and technical indicators. As far as the goal of blast furnace intensified smelting is concerned, it is to give full play to the characteristics of technical equipment, capabilities and raw material conditions, in order to achieve the most suitable and reasonable gas flow distribution under realistic conditions, and to maximize the performance of the actual smelting conditions. smelting potential, to obtain the smelting index that best fits the objective conditions; as far as the blast furnac...

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Problems solved by technology

Relying on traditional partial calculation or production experience can improve technical and economic indicators to a certain extent and at a certain stage, but the traditional calculation method is cumbersome, or it is mainly adjusted based on experience and partial calculation, and it cannot fully consider the causal correlation. Whether the smelting parameters and gas flow parameters are It is within the reasonable range of the corresponding objective conditions and conducts comprehensive adaptability and quantitative matching analysis on the relationship between objective conditions (equipment, raw materials) and gas flow distribution (operation, parameters), and fails to reflect the air volume check and slag volume calculation as the core The entry point uses the gas flow distribution diagnosis model method to analyze, check and control the influencing factors of the gas flow distribution method, and improve the direction and range definition of the indicators, etc.

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