CN202090010U - Air supply pipe of blast furnace - Google Patents

Air supply pipe of blast furnace Download PDF

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Publication number
CN202090010U
CN202090010U CN2011201643611U CN201120164361U CN202090010U CN 202090010 U CN202090010 U CN 202090010U CN 2011201643611 U CN2011201643611 U CN 2011201643611U CN 201120164361 U CN201120164361 U CN 201120164361U CN 202090010 U CN202090010 U CN 202090010U
Authority
CN
China
Prior art keywords
air duct
blast furnace
heat
shell
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011201643611U
Other languages
Chinese (zh)
Inventor
徐国涛
李怀远
邓棠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Iron and Steel Group Corp
Original Assignee
Wuhan Iron and Steel Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Iron and Steel Group Corp filed Critical Wuhan Iron and Steel Group Corp
Priority to CN2011201643611U priority Critical patent/CN202090010U/en
Application granted granted Critical
Publication of CN202090010U publication Critical patent/CN202090010U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an air supply pipe of an iron-making blast furnace, which consists of a shell, an air duct, a heat-insulation layer and a work layer. The air duct is arranged in the shell, the heat-insulation layer is disposed surrounding the air duct, a coating layer coated with black radiation materials is arranged on a wall, which is adjacent to the air duct, of the work layer, and the heat-insulation layer adopts heat-insulation castables or magnesium silicate fibrofelt. A heat conduction process of the air duct can be improved under limited thickness of the air duct, the temperature of the outer surface of the air duct is reduced, the temperature of hot air is increased to be higher than 1200 DEG C, the temperature of a steel shell on the outer wall of the air duct is reduced to a safe service range, accordingly repair times are reduced, iron-making production cost is lowered, and production rate of the blast furnace is improved.

Description

The blast furnace blast tube
Technical field
The utility model relates to iron-smelting blast furnace, specifically belongs to the blast tube of iron-smelting blast furnace.
Background technology
During blast furnace ironmaking is produced, the high and low cost that affects ironmaking of the wind-warm syndrome of hotblast stove.Present domestic most blast-furnace hot-air temperature are no more than 1200 ℃, and the minority blast furnace can reach 1350 ℃ in recent years.What present airduct design was adopted is steel construction shell, aluminum silicate fiber thermal insulation layer, corundum castable working lining, because structure and performance existing problems cause heat transfer coefficient big, heat insulation effect is bad, can not under 1350 ℃ of operating ambient temperatures, use, if the raising wind-warm syndrome, outer steel shell appearance temperature increases, and can reach 700 ℃, cause outer steel shell rubescent, very easily cause security incident, change and keep in repair so must in time stop to produce, and influence blast furnace production efficiency.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of and can reduce airduct appearance temperature, eliminates safe hidden trouble, and improves the blast tube of the blast furnace of wind pushing temperature.
Realize the technical measures of above-mentioned purpose:
The blast furnace blast tube is made up of thermofin, working lining around the air channel in shell, the shell, the air channel, it is characterized in that: the dope layer that scribbles the blackbody radiation material on the working lining wall adjacent with the air channel; Thermofin adopts insulated pouring material or fibrous magnesium silicate felt.
It is characterized in that: the thickness of thermofin is at least 10 millimeters.
It is characterized in that: the thickness of working lining is at least 50 millimeters.
The utility model compared with prior art, can be under limited airduct thickness limits, improve the heat transfer process of airduct, reduce airduct appearance temperature, improve more than the hot blast temperature to 1200 ℃, and make airduct outer wall box hat temperature drop to the safe handling scope, thereby reduce frequency of maintenance, reduce the ironmaking production cost, improve blast furnace productivity.
Description of drawings
Fig. 1 is the structural representation of blast furnace blast tube
Among the figure: 1-shell, 2-air channel, 3-thermofin, 4-working lining, the dope layer of 5-blackbody radiation material.
Embodiment
Do detailed description below in conjunction with accompanying drawing:
The blast furnace blast tube is made up of the air channel 2 in shell 1, the shell 1, thermofin 3, the working lining 4 around the air channel 2.It smears the dope layer 5 of blackbody radiation slip on the wall of the working lining 4 adjacent with air channel 2, its thickness is no more than 2 millimeters, and smears evenly; Thermofin 3 adopt cast of insulated pouring material or fibrous magnesium silicate felt paste into 10 millimeters/, 25 millimeters/45 millimeters thickness; Working lining 4 adopts mullite pouring material or corundum castable to water and builds up 50 millimeters/65 millimeters/95 millimeters thickness.
The making of blast furnace blast tube: adopt high-strength insulation mould material or fibrous magnesium silicate felt to make thermofin 3, cast or paste set thickness and treat that it solidifies drying after, adopt mullite pouring material or corundum castable cast working lining 4, after treating the cast of mullite pouring material or corundum castable working lining 4 solidifying drying, again blackbody radiation is coated with on the wall that slip spreads upon working lining 4 and forms dope layer 5.After whole structure was treated dope layer 5 surface dryings of blackbody radiation material, adopting heats came into operation after roasting mode is baked to 800 ℃ again.

Claims (3)

1. the blast furnace blast tube is made up of thermofin, working lining around the air channel in shell, the shell, the air channel, it is characterized in that: the dope layer that scribbles the blackbody radiation material on the working lining wall adjacent with the air channel; Thermofin adopts insulated pouring material or fibrous magnesium silicate felt.
2. blast furnace blast tube as claimed in claim 1 is characterized in that: the thickness of thermofin is at least 10 millimeters.
3. blast furnace blast tube as claimed in claim 1 is characterized in that: the thickness of working lining is at least 50 millimeters.
CN2011201643611U 2011-05-23 2011-05-23 Air supply pipe of blast furnace Expired - Fee Related CN202090010U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201643611U CN202090010U (en) 2011-05-23 2011-05-23 Air supply pipe of blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201643611U CN202090010U (en) 2011-05-23 2011-05-23 Air supply pipe of blast furnace

Publications (1)

Publication Number Publication Date
CN202090010U true CN202090010U (en) 2011-12-28

Family

ID=45365091

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201643611U Expired - Fee Related CN202090010U (en) 2011-05-23 2011-05-23 Air supply pipe of blast furnace

Country Status (1)

Country Link
CN (1) CN202090010U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106702054A (en) * 2017-01-13 2017-05-24 张英华 Improved iron-smelting blast furnace and production method for air outlet pipes and hollow grate
CN111495990A (en) * 2020-03-25 2020-08-07 佛山津西金兰冷轧板有限公司 Cooling circulation pipeline system for cold rolling mill
CN114716239A (en) * 2022-03-18 2022-07-08 秦皇岛北方管业有限公司 High-crack-resistance low-heat-conduction ceramic matrix composite lining and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106702054A (en) * 2017-01-13 2017-05-24 张英华 Improved iron-smelting blast furnace and production method for air outlet pipes and hollow grate
CN111495990A (en) * 2020-03-25 2020-08-07 佛山津西金兰冷轧板有限公司 Cooling circulation pipeline system for cold rolling mill
CN114716239A (en) * 2022-03-18 2022-07-08 秦皇岛北方管业有限公司 High-crack-resistance low-heat-conduction ceramic matrix composite lining and preparation method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111228

Termination date: 20160523