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Method for measuring chute deformation of burden distribution of blast furnace

A technology for distributing chute and blast furnace, which is applied in the field of blast furnace maintenance and measuring the deformation of blast furnace distributing chute, which can solve the problems of difficulty in moving position and leveling, heavy weight of distributing chute, deformation of distributing chute, etc., and achieves good promotion and application value and practicability Strong, Measuringly Precise Effects

Active Publication Date: 2020-04-10
HANDAN IRON & STEEL GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since these two process characteristic parameters belong to the length measurement parameters, and the weight of the distribution chute is very heavy, it is very difficult to move the position and place it horizontally, and the deformation of the distribution chute is difficult to detect visually. Direct measurement with a box ruler often results in large measurement results. deviation

Method used

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  • Method for measuring chute deformation of burden distribution of blast furnace
  • Method for measuring chute deformation of burden distribution of blast furnace

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Experimental program
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Effect test

Embodiment 1

[0031] Normal distribution matrix α in the production process of a blast furnace max =45°, when the condition of the raw material and fuel is stable, the edge airflow gradually weakens, and it is forced to gradually increase α max , and finally fixed at 42°, the furnace condition is stable. Measure the deformation of the distribution chute after replacing the distribution chute on a regular basis. The inclination angle of the assembly surface 4 of the goose head body of the distribution chute is 39.5°, and the inclination angle of the side end surface 2 of the U-shaped groove at the front end of the distribution chute is -4°. The included angle of the side end surface 2 of the U-shaped groove at the front end is 180°-(39.5°+4°)=136.5°, and the deviation is 140°-136.5°=3.5°.

Embodiment 2

[0033] A blast furnace replaced the distribution chute, and measured the deformation of the new chute. The inclination angle of the goose head body assembly surface 4 of the distribution chute is 40.5° on one side, and 40.5° on the other side, with an average of 40.5°; the inclination angle of one side of the U-shaped groove at the front end of the distribution chute is 0.5°, and the inclination angle of the other side is 0°, with an average of 0.25°; calculation The angle between the assembly surface 4 of the goose head body of the distribution chute and the U-shaped groove side end surface 2 at the front end of the distribution chute is 180°-(40.5°+0.25°)=139.2°, and the deviation is 140°-139.2°=0.8°.

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Abstract

A method for measuring chute deformation of burden distribution of a blast furnace belongs to the technical field of blast furnace maintenance methods and is used for measuring whether a burden distribution chute of the blast furnace deforms or not. The technical scheme is as follows: the method comprises the following steps: firstly, an angle protractor is used for respectively measuring an inclination angle delta 1 of a gooseneck boom body assembly surface of a distribution chute and an inclination angle delta 2 of the side end surface of a U-shaped groove at the front end of the distribution chute; and the included angle between the gooseneck boom body assembly surface of the distribution chute and the side end surface of the U-shaped chute at the front end of the distribution chute iscalculated to be equal to 180 degrees-(delta 1 + delta 2), and if the included angle is not equal to 140 degrees, it can be judged that the distribution chute deforms. The method has the advantages ofbeing rapid and convenient to operate, high in practicability and accurate in measurement, can quantitatively reflect the deformation of the distribution chute, is a new breakthrough of a distribution chute detection method, solves the problem that the deformation of the distribution chute is difficult to detect in the prior art, and has good popularization and application value in the industry.

Description

technical field [0001] The invention relates to a method for measuring the deformation of a blast furnace material distribution chute, and belongs to the technical field of blast furnace maintenance methods. Background technique [0002] The bellless top is the key equipment of large and medium-sized blast furnaces, and the bellless charging refers to the system that uses the top charging equipment to realize the charging. In the bellless furnace top, the function of the distribution chute is to distribute the material into the furnace by tilting and rotating the distribution chute. In calculating the falling point of the charge according to the law of distribution, two key parameters of the distribution chute need to be used: the effective length l 0 and the tilting moment e, the tilting moment e refers to the vertical distance from the center of the goose head body of the distribution chute to the bottom surface of the chute, and the effective length is l 0 It refers to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/32
CPCG01B21/32
Inventor 李志明邵久刚徐俊杰魏航宇靳志刚贾镇汇张淑科
Owner HANDAN IRON & STEEL GROUP
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