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

A technology of technical indicators and gas flow, which is applied in the field of diagnosis of blast furnace gas flow and improvement of smelting technical indicators, can solve the problem of cumbersome calculation methods, failure to fully consider causal correlation, failure to reflect the direction of checking and control of influencing factors and improving indicators and range definition, etc., to achieve the effect of comprehensive and simple methods

Active Publication Date: 2021-06-08
WUKUN STEEL +1
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  • Summary
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  • Description
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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 comprehen

Method used

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

Examples

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Effect test

Embodiment 1

[0152] A method for diagnosing blast furnace gas flow and improving smelting technical indicators, comprising the following steps:

[0153] A. Furnace top technical equipment and raw fuel conditions:

[0154] Bellless top blast furnace, blast furnace volume: 1080m 3 ~2500m 3 ;

[0155] Raw fuel conditions:

[0156]

[0157] The sum of the mass percentages of the above-mentioned sinter, pellets and lump ore is 100%, and the mass of coke + diced coke is the separate input amount of each batch of materials; the sum of ordinary pellets and vanadium-titanium pellets is not 0%;

[0158] B. Calculation and verification of smelting parameters and indicators:

[0159] To correct the air volume, the calculation formula is as follows:

[0160]

[0161] V school is the corrected air volume, m 3 / min; M 焦 is the daily coke content of the blast furnace, t / d; C 焦 is the carbon content of coke, %; is the combustion rate of coke before the blast furnace tuyere, %; H 2 o 焦 is ...

Embodiment 2

[0226] A method for diagnosing blast furnace gas flow and improving smelting technical indicators, comprising the following steps:

[0227] A. Furnace top technical equipment and raw fuel conditions:

[0228] Bellless top blast furnace, blast furnace volume: 1080m 3 ~2500m 3 ;

[0229] Raw fuel conditions:

[0230]

[0231] The sum of the mass ratios of the above-mentioned sinter, pellets and lump ore is 100%, and the mass of coke + diced coke is the separate input amount of the master batch; the sum of ordinary pellets and vanadium-titanium pellets is not 0 %;

[0232] B. Calculation and verification of smelting parameters and indicators:

[0233] To correct the air volume, the calculation formula is as follows:

[0234]

[0235] V 校 is the corrected air volume, m 3 / min; M 焦 is the daily coke content of the blast furnace, t / d; C 焦 is the carbon content of coke, %; is the combustion rate of coke before the blast furnace tuyere, %; H 2 o 焦 is the moisture co...

Embodiment 3

[0326] Such as figure 1As shown, a method for diagnosing blast furnace gas flow and improving smelting technical indicators, including furnace top technical equipment and raw and fuel conditions, smelting parameters, index calculation and verification, judgment of gas flow development before adjustment, distribution law and matrix parameter calculation , measurement of main parameters of gas flow, forward degree and potential analysis, check of slag volume, degree of development of gas flow, adjustment of material distribution parameters, adjustment of comprehensive air supply parameters, check of gas flow parameters, furnace feeding and control according to adjusted smelting parameters, The actual smelting result returns to the correction step. The above steps are realized by each functional module of the composition method, namely: smelting parameters, index calculation and verification function module, gas flow diagnosis and evaluation function module, comprehensive air sup...

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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...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/04C21B5/00
CPCG06Q10/06393G06Q50/04C21B5/001C21B5/008Y02P90/30
Inventor 林安川蒋玉波朱羽周建云刘宁斌罗英杰罗霄刘缘缘
Owner WUKUN STEEL
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