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A device for monitoring the temperature change of the upturned bottom of a blast furnace and its application

A technology of temperature change and blast furnace, which is applied in the field of blast furnace equipment, can solve problems such as safety hazards and economic losses, and achieve the effects of good basic conditions, large thermal conductivity, high flexural strength and compressive strength

Active Publication Date: 2017-04-26
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the problems in the prior art that the upturning of the blast furnace bottom plate causes major safety hazards and major economic losses, the present invention provides a device for monitoring the temperature change of the upturned bottom of the blast furnace and its application

Method used

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  • A device for monitoring the temperature change of the upturned bottom of a blast furnace and its application
  • A device for monitoring the temperature change of the upturned bottom of a blast furnace and its application
  • A device for monitoring the temperature change of the upturned bottom of a blast furnace and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0060] A device for monitoring the temperature change of the upturned furnace bottom of a blast furnace in this embodiment, such as figure 1 As shown, it includes blast furnace heat-resistant base pier 2, furnace bottom sealing plate 4, temperature measuring point 6, temperature sensor 8, annular retaining ring 3 and castable 5, wherein: the temperature measuring point 6 is set on the blast furnace heat-resistant base pier 2 and the furnace bottom sealing plate 4; the temperature sensor 8 is buried at the temperature measuring point 6, and is output to the external control system of the blast furnace through the lead wire 9. The castable 5 is poured into the gap formed between the furnace bottom sealing plate 4 and the blast furnace heat-resistant base pier 2, and around the temperature sensor 8; the annular retaining ring 3 is fixed on the periphery of the furnace shell 7 and surrounds the castable 5 . There are 2 temperature measuring points 6 per group, which are evenly se...

Embodiment 2

[0086]A device for monitoring the temperature change of the upturned bottom of a blast furnace in this embodiment has the same basic structure as that in Example 1. In order to ensure the accuracy of the measured temperature and further verify the conclusion, the device for monitoring the upturned bottom of a blast furnace in this embodiment The temperature change device adjusted the ingredients of the high thermal conductivity self-flowing castable: SiC, 90 parts; aqueous binder, 25 parts; corundum, 14 parts; water reducer and dispersant, 1 part in total. Through testing, its thermal conductivity {100°C, (200°C×24h)} is 13w / m.k. After simulation tests, it is found that the curve fluctuations of the temperature of the furnace bottom plate and other parameters tend to be consistent. Due to the complex factors of the blast furnace bottom, it is necessary to consider The flexural strength and compressive strength of high thermal conductivity self-flowing castables cannot be improv...

Embodiment 3

[0088] A device for monitoring the temperature change of the upturned furnace bottom of the blast furnace in this embodiment, its basic structure is the same as that of Embodiment 2, and the ingredients of the high thermal conductivity self-flowing castable are adjusted again: SiC, 85 parts; water-containing adhesive, 20 parts ; Corundum, 19 parts; 1 part of water reducer and dispersant. Through testing, its thermal conductivity {100°C, (200°C×24h)} is 12w / m.k.

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PUM

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Abstract

The invention discloses a device for monitoring an upward hearth temperature change of a blast furnace and an application of the device, and belongs to the technical field of blast furnace equipment. The device comprises a heat-resisting blast furnace foundation and a hearth sealing plate, and further comprises temperature measurement points and temperature sensors, wherein the temperature measurement points are arranged between the heat-resisting blast furnace foundation and the hearth sealing plate; the temperature sensors are buried at the temperature measurement points and output temperatures measured to an external blast furnace control system through leads. According to the application of the device, by means of the processes of installation, temperature and parameter model design, judgment and recording statistics, the temperature detection devices are utilized to continuously detect the hearth temperature changes of the blast furnace online and to provide multi-measurement point real-time data so as to achieve the purpose of analyzing the hearth temperature changes. Meanwhile, data comparison analysis is performed on furnace roof pressures, air supply temperatures and hearth plate upward pressures by use of temperature data and corresponding models are established to provide technical support for safe smelting production of the blast furnace and to provide data analysis for actually finding out a reason of the hearth plate upward.

Description

technical field [0001] The invention belongs to the technical field of blast furnace equipment, in particular to a device for monitoring the temperature change of the upturned furnace bottom of a blast furnace and its application. Background technique [0002] With the change of blast furnace smelting and production in the world's large-scale ironmaking blast furnaces, some blast furnaces will have upturned furnace floors, and the upturned furnace bottoms will intensify as the age of the blast furnace increases; serious deformation will cause damage to the hearth and gas leakage will directly affect personal health and equipment safety. At present, there is no definite determination of the cause of furnace bottom plate warping at home and abroad. At the same time, there is no relationship between the rising stress of the furnace bottom plate and the process parameters such as blast furnace top pressure, air supply temperature, furnace top temperature, air temperature, materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/24
Inventor 廖海欧徐兆春王成伟陈志虎杨进李明亮王徐鹏黄莹
Owner MAANSHAN IRON & STEEL CO LTD