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Blast furnace packing layer air gap judgment method

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

Active Publication Date: 2020-04-28
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

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  • Blast furnace packing layer air gap judgment method
  • Blast furnace packing layer air gap judgment method
  • Blast furnace packing layer air gap judgment method

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Experimental program
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Effect test

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 invention relates to a blast furnace packing layer air gap judgment method, and belongs to the technical field of blast furnace ironmaking. The blast furnace packing layer air gap judgment methodcomprises the following steps: a reference energy transfer coefficient k1<reference> between a refractory brick layer and a cooling wall, a reference transfer coefficient k2<reference> between the cooling wall and a furnace shell and a reference transfer coefficient k3<reference> between the refractory bricks and the furnace shell are determined according to the refractory brick temperature corresponding to the cooling wall, the furnace shell temperature corresponding to the cooling wall and the water temperature difference of water inlet and outlet pipe heads of the cooling wall; and k1<measurement>, k2<measurement> and k3<measurement> obtained according to the current detection data and a relational expression are respectively compared with k1<reference>, k2<reference> and k3<reference>to judge whether an air gap exists in a packing layer of a blast furnace body and judge the change of the air gap. The judgment method is convenient for technicians in the field to judge the air gap,and can effectively guide the technicians of the blast furnace process to treat the air gap by adopting a grouting filling method.

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 Applications(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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