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Judgment Method of Air Gap in Filling Layer of Blast Furnace

A packing layer and air gap technology, which is applied in the field of judging the air gap of the blast furnace packing layer, can solve the problem of inconvenient judgment of the air gap of the blast furnace packing layer

Active Publication Date: 2021-06-25
SGIS SONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the embodiment of the present application includes providing a method for judging the air gap of the blast furnace packing layer, so as to improve the technical problem that the judgment of the air gap of the blast furnace packing layer is not convenient

Method used

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  • Judgment Method of Air Gap in Filling Layer of Blast Furnace
  • Judgment Method of Air Gap in Filling Layer of Blast Furnace
  • Judgment Method of Air Gap in Filling Layer of Blast Furnace

Examples

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Embodiment 1

[0037] This embodiment provides a method for judging the air gap of a blast furnace packing layer, which includes the following steps:

[0038] S1: Three thermocouples are buried between the refractory brick layer of the blast furnace body and the furnace skin. The circumferential distance is generally maintained at a distance of 1.5 meters, and the longitudinal distance is generally maintained at a level of 0.5 meters. The temperature measured by the thermocouples indicates the temperature of the refractory bricks inside the blast furnace body.

[0039] The water temperature of the stave is monitored for each layer of the blast furnace body and the inlet and outlet pipe heads of each stave, and the temperature difference of the stave water is obtained as ΔT, and the temperature of the refractory brick corresponding to each layer of the stave is monitored, and the temperature is recorded as t; the stave The corresponding furnace skin temperature is T 炉皮 . Temperature differen...

Embodiment 2

[0053] This embodiment provides a method for judging the air gap of a blast furnace packing layer, which includes the following steps:

[0054] S1: Three thermocouples are buried between the refractory brick layer of the blast furnace body and the furnace skin. The circumferential distance is generally maintained at a distance of 1.5 meters, and the longitudinal distance is generally maintained at a level of 0.5 meters. The temperature measured by the thermocouples indicates the temperature of the refractory bricks inside the blast furnace body.

[0055] The water temperature of the stave is monitored for each layer of the blast furnace body and the inlet and outlet pipe heads of each stave, and the temperature difference of the stave water is obtained as ΔT, and the temperature of the refractory brick corresponding to each layer of the stave is monitored, and the temperature is recorded as t; the stave The corresponding furnace skin temperature is T 炉皮 .

[0056] Temperature...

Embodiment 3

[0070] This embodiment provides a method for judging the air gap of a blast furnace packing layer, which includes the following steps:

[0071] S1: Three thermocouples are buried between the refractory brick layer of the blast furnace body and the furnace skin. The circumferential distance is generally maintained at a distance of 1.8 meters, and the longitudinal distance is generally maintained at a level of 0.6 meters. The temperature measured by the thermocouples indicates the temperature of the refractory bricks inside the blast furnace body.

[0072] The water temperature of the stave is monitored for each layer of the blast furnace body and the inlet and outlet pipe heads of each stave, and the temperature difference of the stave water is obtained as ΔT, and the temperature of the refractory brick corresponding to each layer of the stave is monitored, and the temperature is recorded as t; the stave The corresponding furnace skin temperature is T 炉皮 .

[0073] The water t...

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Abstract

The application relates to a method for judging the air gap of a filling layer of a blast furnace, which belongs to the technical field of blast furnace ironmaking. The method for judging the air gap of the blast furnace filling layer includes determining the reference energy transfer coefficient between the refractory brick layer and the stave according to the temperature of the refractory brick corresponding to the stave, the temperature of the furnace skin corresponding to the stave, and the water temperature difference between the inlet and outlet water pipe heads of the stave k 1基 , the reference transfer coefficient k between stave and furnace skin 2基 And the reference transfer coefficient k between the refractory brick and the furnace skin 3基 . K obtained according to the current detection data and relational formula 1测 、k 2测 、k 3测 respectively with k 1基 、k 2基 、k 3基 Compare and judge whether there is an air gap in the filling layer of the blast furnace body and the change of the air gap. This judging method is convenient for those skilled in the art to judge the air gap, and can effectively guide blast furnace technicians to control the air gap by grouting and filling.

Description

technical field [0001] The present application relates to the technical field of blast furnace ironmaking, and in particular to a method for judging the air gap of a blast furnace packing layer. Background technique [0002] In the management of blast furnace safety and longevity, the operating condition of the blast furnace body is judged entirely by the temperature of the blast furnace thermocouple. In particular, some blast furnaces are too intensive to smelt, ignoring the longevity of the blast furnace. When there are cracks or air gaps between the carbon brick and the stave, the erosion of the carbon brick will be accelerated, resulting in the thinning of the blast furnace carbon brick, shortening the life of the blast furnace hearth, and even causing a vicious accident of the blast furnace body burn-through. Under the existing technical conditions, when the blast furnace is in normal production, it is possible to judge whether there is an air gap in the blast furnace ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/16G01N25/72C21B7/10
CPCC21B7/10G01B21/16G01N25/72
Inventor 陈生利余骏程羲杨涛
Owner SGIS SONGSHAN CO LTD
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