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Method for detecting air gap on a blast furnace shell

A blast furnace shell and air gap technology, which is applied in the detection field of blast furnace shell air gap, can solve the problems of lack of management tools and technical means, the timeliness, accuracy and comprehensiveness of furnace shell longevity management cannot be guaranteed, and achieve The effect of accurate detection

Active Publication Date: 2013-05-08
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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Problems solved by technology

[0004] To sum up, at present, there is a lack of effective management tools and technical means in the management of blast furnace shell longevity and air gap control. and comprehensiveness will not be guaranteed

Method used

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  • Method for detecting air gap on a blast furnace shell
  • Method for detecting air gap on a blast furnace shell
  • Method for detecting air gap on a blast furnace shell

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Embodiment Construction

[0028] In blast furnace production, due to the slow change of the heat transfer state of the furnace shell, the furnace shell is considered to be in a steady state of heat transfer. According to the theory of heat transfer, based on the thermocouple information and the properties of the refractory material of the furnace shell, the erosion line of the refractory material of the furnace shell is calculated , The position of the solidification line, and the temperature field in the refractory material of the furnace shell can be simulated and calculated. Based on the finite element results of the temperature field of the side wall of the furnace shell, the present invention comprehensively calculates the determination index of the air gap of the side furnace shell to reflect the probability and size of the air gap of the furnace shell.

[0029] figure 1 The realization principle of the detection method for the blast furnace shell air gap according to an embodiment of the present...

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Abstract

The invention discloses a method for detecting air gap on a blast furnace shell. The method comprises steps of: establishing a blast furnace shell model; dividing the blast furnace shell into a plurality of regional units; collecting reference configuration information and finite element reference position information in the regional units, and measuring reference temperature; calculating to obtain a reference heat transfer coefficient of the blast furnace shell model based on the above reference configuration information, the finite element reference position information and measured reference temperature; determining an air gap parameter of the blast furnace shell based on the blast furnace shell model; collecting on-site configuration information, finite on-site element position information in the regional units, and measuring an on-site temperature; calculating to obtain an on-site heat transfer coefficient based on the on-site configuration information, finite on-site element position information and measured on-site temperature; and comparing the on-site heat transfer coefficient with the reference heat transfer coefficient to obtain air gap parameter of the blast furnace shell. The method provided by the invention can effectively and timely reflect the air gap parameter of the blast furnace shell, show the change of the heat transfer coefficient of the blast furnace shell, and provide direct evidence for gap detection.

Description

technical field [0001] The invention relates to blast furnace maintenance technology, in particular to a detection method for blast furnace shell air gap. Background technique [0002] The longevity of the blast furnace body is an important feature of modern blast furnaces. The air gap between the stave and the carbon brick in the actual production process will affect the cooling effect of the stave and intensify the erosion rate of the lining refractory material. [0003] In on-site production, the temperature of the thermocouple buried inside the carbon brick is mainly used to judge whether there is an air gap based on on-site experience. This judgment method is often misjudged due to fluctuations in erosion conditions and cooling conditions. [0004] To sum up, at present, there is a lack of effective management tools and technical means in the management of blast furnace shell longevity and air gap control. The integrity and comprehensiveness will not be guaranteed. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/24
Inventor 陶钧颜郭发柏奚小娟
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
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