CN102134621B - Blast furnace iron notch patching method - Google Patents

Blast furnace iron notch patching method Download PDF

Info

Publication number
CN102134621B
CN102134621B CN2010105402559A CN201010540255A CN102134621B CN 102134621 B CN102134621 B CN 102134621B CN 2010105402559 A CN2010105402559 A CN 2010105402559A CN 201010540255 A CN201010540255 A CN 201010540255A CN 102134621 B CN102134621 B CN 102134621B
Authority
CN
China
Prior art keywords
brown corundum
brick
filler
stones
iron mouth
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.)
Active
Application number
CN2010105402559A
Other languages
Chinese (zh)
Other versions
CN102134621A (en
Inventor
郭昌勇
邓辉
卢凤君
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.)
Xinxing Ductile Iron Pipes Co Ltd
Original Assignee
Xinxing Ductile Iron Pipes Co Ltd
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 Xinxing Ductile Iron Pipes Co Ltd filed Critical Xinxing Ductile Iron Pipes Co Ltd
Priority to CN2010105402559A priority Critical patent/CN102134621B/en
Publication of CN102134621A publication Critical patent/CN102134621A/en
Application granted granted Critical
Publication of CN102134621B publication Critical patent/CN102134621B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a blast furnace iron notch patching method. The key improvement of the method is that the method comprises the following steps: (1) the brown corundum bricks and carbon bricks below the central line of the iron notch are dismantled; the dismantling range uses the central line of the iron notch as a reference and is eudipleural, the width of the dismantling range is more than 1200mm, the height is more than 600mm and the depth of the dismantling range from the shell of the furnace to the inside is more than 600mm; (2) the inner wall of the iron notch is finished; (3) brown corundum bricks are laid; at least two layers of brown corundum bricks are laid at the bottom of the cavity formed after the brown corundum bricks and carbon bricks are dismantled; (4) a cooling coil is arranged in the cavity after the brown corundum bricks are laid; (5) a brown corundum filler is poured in the cavity after the cooling coil is arranged; and (6) mud is jacked on the shell of the furnace: after the brown corundum filler is poured, mud is jacked between the poured brown corundum filler and the shell of the furnace and between the laid brown corundum bricks. The invention has the following advantage: the service life of the iron notch can be effectively increased.

Description

A kind of blast furnace taphole restorative procedure
Technical field
The present invention relates to a kind of blast furnace method for maintaining, particularly a kind of blast furnace taphole restorative procedure.
Background technology
Blast furnace ironmaking is to utilize reductive agent at high temperature iron ore or iron-bearing material to be reduced into the process of liquid pig iron; In the whole production smelting process; Blast-furnace body is a nucleus equipment, running efficiency and production efficiency that the efficient height of iron-smelting blast furnace body and the length in life-span will directly influence whole ironmaking workshop system equipment; Existing blast furnace taphole generally adopts brown corundum brick to build by laying bricks or stones, but in use, the iron mouth occurs through regular meeting and burn the phenomenon of metalling run out; Directly influence the normal operation of blast furnace; Also shorten the work-ing life of blast furnace, increased the maintenance and repair cost, reduced the production efficiency in whole workshop.
Summary of the invention
Technical problem to be solved by this invention provides a kind of blast furnace taphole work-ing life of can effectively prolonging, and improves the blast furnace taphole restorative procedure of blast furnace production efficiency.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of blast furnace taphole restorative procedure, and its key improvements is: may further comprise the steps: brown corundum brick and the carbon brick below the iron mouth medullary ray removed in (1); The dismounting scope is the benchmark left-right symmetric with iron mouth medullary ray, and the width of removing scope is greater than 1200 millimeters, and height is greater than 600 millimeters, the dismounting scope from the inside depth of stove skin greater than 600 millimeters; (2) revise iron mouth inwall; Melt on the Tie Kou two side is rooted out; (3) build brown corundum brick by laying bricks or stones; The bottom that behind brown corundum brick of dismounting and carbon brick, forms is built two-layer at least brown corundum brick by laying bricks or stones; (4) spiral coil cooling tube is installed; In building the later cavity of brown corundum brick by laying bricks or stones, spiral coil cooling tube is installed; (5) the brown corundum filler of cast; The brown corundum filler of cast in the later cavity of spiral coil cooling tube is installed; (6) stove skin mud jacking; Accomplish after the cast of brown corundum filler, at mud jacking between the brown corundum filler of cast and the stove skin and between the brown corundum brick of building by laying bricks or stones.
Said step (5) also is included in the brown corundum filler top of cast and builds iron mouth brick by laying bricks or stones, and iron mouth brick and iron mouth frame seam crossing are poured into a mould brown corundum filler.
Adopt the beneficial effect that technique scheme produced to be: the brown corundum brick that replaces original piecemeal to build by laying bricks or stones with integrated poured brown corundum filler below the iron mouth; Improve the high-temperature capability of iron mouth below; Can effectively prolong iron mouth work-ing life, reduce maintenance cost, through experimental verification on 460 cubes of blast furnaces; Also occurred in 3 years leaking slag iron phenomenon through continuous use of the iron mouth of repairing again, can effectively improve the production efficiency of blast furnace.
Embodiment
For making above-mentioned purpose of the present invention, characteristic and beneficial effect can be more obviously understandable, will combine the embodiment of the invention and embodiment below, and the technical scheme in the embodiment of the invention is carried out clear, intactly description.
A kind of blast furnace taphole restorative procedure, its key improvements is: may further comprise the steps: brown corundum brick and the carbon brick below the iron mouth medullary ray removed in (1); The dismounting scope is the benchmark left-right symmetric with iron mouth medullary ray, and the width of removing scope is greater than 1200 millimeters, and height is greater than 600 millimeters, the dismounting scope from the inside depth of stove skin greater than 600 millimeters; (2) revise iron mouth inwall; Melt on the Tie Kou two side is rooted out, consistent until iron mouth inner wall shape and original-shape; (3) build brown corundum brick by laying bricks or stones; The bottom that behind brown corundum brick of dismounting and carbon brick, forms is built two-layer at least brown corundum brick by laying bricks or stones; (4) spiral coil cooling tube is installed; In building the later cavity of brown corundum brick by laying bricks or stones, spiral coil cooling tube is installed; (5) the brown corundum filler of cast; The brown corundum filler of cast in the later cavity of spiral coil cooling tube is installed; (6) stove skin mud jacking; Accomplish after the cast of brown corundum filler, at mud jacking between the brown corundum filler of cast and the stove skin and between the brown corundum brick of building by laying bricks or stones.
Said step (5) also is included in the brown corundum filler top of cast and builds iron mouth brick by laying bricks or stones, and iron mouth brick and iron mouth frame seam crossing are poured into a mould brown corundum filler.
In concrete application process; At first remove with the stove skin around the iron mouth with by the cooling stave of scaling loss; And be that benchmark is removed below the medullary ray each side 600 millimeters brown corundum brick and carbon brick with iron mouth medullary ray, removing depth is benchmark with former stove skin, inwardly depth is 600 millimeters; Repair the melt on the Tie Kou two side then, be trimmed to Tie Kou two side regular shape; The 3rd step carried out brown corundum brick and builds by laying bricks or stones, built two-layer brown corundum brick by laying bricks or stones removing the cavity inner bottom part that forms behind brown corundum brick and the carbon brick; The 4th step is the brown corundum filler of cast in laying the cavity of brown corundum brick, and the height of pouring into a mould brown corundum filler is consistent with former iron mouth outer bottom height, and spiral coil cooling tube was installed before cast; The 5th step was on the brown corundum filler end face of cast, to build two-layer iron mouth brick by laying bricks or stones; The 6th step was carried out mud jacking, pressed in the slit between the slit that the brown corundum filler of cast forms later on and the brown corundum brick of building by laying bricks or stones and annotated the refractory seals slurry; The stove skin is installed at last.

Claims (1)

1. a blast furnace taphole restorative procedure is characterized in that: may further comprise the steps: brown corundum brick and carbon brick below (1) dismounting iron mouth medullary ray; The dismounting scope is the benchmark left-right symmetric with iron mouth medullary ray, and the width of removing scope is greater than 1200 millimeters, and height is greater than 600 millimeters, the dismounting scope from the inside depth of stove skin greater than 600 millimeters; (2) finishing iron mouth inwall; Melt on the Tie Kou two side is rooted out; (3) build brown corundum brick by laying bricks or stones; The bottom that behind brown corundum brick of dismounting and carbon brick, forms is built two-layer at least brown corundum brick by laying bricks or stones; (4) spiral coil cooling tube is installed; In building the later cavity of brown corundum brick by laying bricks or stones, spiral coil cooling tube is installed; (5) the brown corundum filler of cast; The brown corundum filler of cast in the later cavity of spiral coil cooling tube is installed; (6) stove skin mud jacking; Accomplish after the cast of brown corundum filler, at mud jacking between the brown corundum filler of cast and the stove skin and between the brown corundum brick of building by laying bricks or stones; Said step (5) also is included in the brown corundum filler top of cast and builds iron mouth brick by laying bricks or stones, and iron mouth brick and iron mouth frame seam crossing are poured into a mould brown corundum filler.
CN2010105402559A 2010-11-11 2010-11-11 Blast furnace iron notch patching method Active CN102134621B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105402559A CN102134621B (en) 2010-11-11 2010-11-11 Blast furnace iron notch patching method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105402559A CN102134621B (en) 2010-11-11 2010-11-11 Blast furnace iron notch patching method

Publications (2)

Publication Number Publication Date
CN102134621A CN102134621A (en) 2011-07-27
CN102134621B true CN102134621B (en) 2012-06-20

Family

ID=44294547

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105402559A Active CN102134621B (en) 2010-11-11 2010-11-11 Blast furnace iron notch patching method

Country Status (1)

Country Link
CN (1) CN102134621B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102384653A (en) * 2011-11-03 2012-03-21 云南新立有色金属有限公司 Method for changing refractory brick at tapping hole of direct current electric arc furnace
CN108977603B (en) * 2018-08-23 2020-07-31 中国二十二冶集团有限公司 Repairing method for iron notch frame burn-through of iron-making blast furnace

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101790587A (en) * 2007-09-10 2010-07-28 新日本制铁株式会社 Tap hole structure of melting furnace and method of repairing same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101790587A (en) * 2007-09-10 2010-07-28 新日本制铁株式会社 Tap hole structure of melting furnace and method of repairing same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
柯显峰.湖北新冶钢2#380m3高炉中修探索.《2007年中小高炉炼铁学术年会论文集》.2007,494-496. *
梁荣利等.包钢6#高炉铁口冷却壁修复技术.《包钢技术》.2008,第34卷(第5期),23-25. *

Also Published As

Publication number Publication date
CN102134621A (en) 2011-07-27

Similar Documents

Publication Publication Date Title
CN104759611B (en) What a kind of ladle was combined working lining and slag lining thereof builds by laying method
CN101412109B (en) Building and laying method capable of extending service lifetime of RH ladle working lining
CN103276130B (en) Maintenance method for air leakage from pipeline of hot-air system of blast furnace
CN102912051B (en) Method for exchanging cooling wall of blast furnace taphole online
CN204174222U (en) The repair structure of iron-making heat wind furnace hot air duct and repairing mould thereof
CN102399926B (en) Furnace halt residue iron outlet method for middle and large-sized blast furnaces
CN102941341A (en) Method for locally repairing bricked ladle working liner
CN102134621B (en) Blast furnace iron notch patching method
CN100595284C (en) Maintaining method for blast furnace
CN102019417A (en) Method for building steel ladle pouring working lining
CN108971471B (en) Construction process for carbon-free steel ladle composite ladle bottom
CN205188326U (en) Can prevent iron notch of blast furnace structure of gas leakage
CN101509050A (en) Method for producing and mending slag separator
CN204525714U (en) Before a kind of State of Blast Furnace, mould built by resistance to material
CN204545398U (en) A kind of ladle compound working lining
CN107779556A (en) A kind of RH refining furnace vacuum chambers base channel restorative procedure
CN103302280B (en) A kind of building method of steel ladle bottom for ultra-low carbon steel
CN101921887A (en) Maintenance method of blast furnace liner
CN203559063U (en) Blast furnace thin-wall lining
CN104019666B (en) A kind of method that intermediate frequency furnace body crucible is repaired immediately
CN206308387U (en) A kind of RH vacuum chambers bottom masonry construction
CN205803515U (en) A kind of can be with the ferrum mouth cooling wall of integral replacing
CN107254559B (en) A kind of cooling wall and its processing method
CN108842018A (en) A kind of blast-furnace tuyere blocks up mud device and its installation and method for dismounting
CN106435073B (en) A kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant