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Efficient center coke adding matrix setting method based on charge level iteration

A setting method and iterative technology, applied in blast furnaces, metal processing, blast furnace details, etc., can solve the problems of lack of calculation methods and effect analysis for specific settings of gears and inclination angles, so as to improve passing performance, flatness, The effect of reducing thickness

Active Publication Date: 2021-07-20
ANGANG STEEL CO LTD
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Problems solved by technology

[0002] At present, domestic steel enterprises widely adopt the method of center-focusing distribution, but there is a lack of detailed calculation methods and effect analysis for the specific setting of gears and inclination angles in the center-focusing matrix

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  • Efficient center coke adding matrix setting method based on charge level iteration
  • Efficient center coke adding matrix setting method based on charge level iteration
  • Efficient center coke adding matrix setting method based on charge level iteration

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Embodiment Construction

[0086] The invention discloses a high-efficiency center-focusing matrix setting method based on material surface iteration. Those skilled in the art can refer to the content of this article to appropriately improve the process parameters to achieve. In particular, it should be pointed out that all similar replacements and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The method and application of the present invention have been described through preferred embodiments, and the relevant personnel can obviously make changes or appropriate changes and combinations to the method and application described herein without departing from the content, spirit and scope of the present invention to realize and Apply the technology of the present invention.

[0087] A high-efficiency central coke matrix setting method based on material surface iteration, using the drop point calculation software to calculate the ...

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Abstract

The invention relates to the technical field of coke and ore grade and dip angle setting in a blast furnace top charging system, in particular to an efficient center coke adding matrix setting method based on charge level iteration. The method specifically comprises the following steps of 1) setting the radius ratio of a barren area to a furnace throat to be 40%-45%, and calculating the distance from an innermost ring coke drop point to the center of the furnace throat; 2) calculating the effective distance of a chute; (3) calculating the final velocity V<2> after furnace burden leaves the chute; 4) calculating a minimum coke angle alpha<coke min> according to L<min>; 5) calculating the dip angle of each grade of coke; (7) calculating the minimum dip angle alpha<ore min> of ore; 8) calculating other tilting angles of the ore; (9) determining the number of turns of material distribution of each ring position of the coke; and (10) determining the number of turns of material distribution of each ring position of the ore; According to the method, collapse layers formed by ores close to the ring position of the barren area in the material distribution process onto the coke can be avoided, then the air permeability and liquid permeability of a center material column are improved, and the proportion of center coke can be greatly decreased to 15%; and the gas utilization rate is increased, and the fuel ratio is decreased.

Description

technical field [0001] The invention relates to the technical field of gear and inclination setting of coke and ore in the top charging system of a blast furnace, in particular to an efficient central coking matrix setting method based on material level iteration. Background technique [0002] At present, domestic steel enterprises widely adopt the center-focusing distribution method, but there is a lack of detailed calculation methods and effect analysis for the specific setting of gears and inclination angles in the center-focusing matrix. In particular, how to control the rolling effect of the ore to the center, how to improve the skeleton effect of the material column in the center of coking so as to reduce the amount of coking in the center, so that more coke can participate in the reduction of iron ore, are the major iron and steel enterprises' attention and urgent need solved problem. Contents of the invention [0003] In order to overcome the deficiencies of the p...

Claims

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Application Information

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IPC IPC(8): C21B5/00
CPCC21B5/008C21B5/007C21B5/006C21B2300/04
Inventor 邵思维张延辉朱建伟车玉满郭天永姜喆姚硕刘炳南
Owner ANGANG STEEL CO LTD
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