CN102442828B - Dry type thermal repairing material used for bottom of annular heating furnace - Google Patents
Dry type thermal repairing material used for bottom of annular heating furnace Download PDFInfo
- Publication number
- CN102442828B CN102442828B CN201010505272.9A CN201010505272A CN102442828B CN 102442828 B CN102442828 B CN 102442828B CN 201010505272 A CN201010505272 A CN 201010505272A CN 102442828 B CN102442828 B CN 102442828B
- Authority
- CN
- China
- Prior art keywords
- dry type
- type thermal
- repairing material
- heating furnace
- annular heating
- 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
Links
Abstract
The invention relates to an annular heating furnace, especially relates to a dry type thermal repairing material used for a bottom of the annular heating furnace. The dry type thermal repairing material used for the bottom of the annular heating furnace is prepared by curing the following components by content: 1-3% of clay, 1-3% of silicon ash, 1-15% of middle and low-temperature sintering agent and balance of refractory aggregate.
Description
Technical field
The present invention relates to rotary heating furnace, particularly relate to a kind of furnace bottom of annular heating furnace thermal repairing material.
Background technology
Rotary heating furnace is the important basic heating installation in pipe mill, and top temperature 1300 ~ 1350 DEG C in stove, with mixed gas and heavy-oil heating.Furnace bottom of annular heating furnace working lining generally adopts ultra-low cement deposit material or ultra-low cement deposit material prefabricated section to build by laying bricks or stones, furnace bottom is made with the slot for fixing pipe, due to the surging force produced when placing pipe, furnace bottom prefabricated section or mould material lining body is made to divide generation cracked, peeling off again due to pipe iron scale, make slot prefabricated section be subject to chemical reaction and corrode, two reasons make slot deepen, discharging machine can be caused thus can not press from both sides pipe, affect production.
Accordingly, pipe mill wishes to implement to repair to damage slot during process furnace periodical repair.
Chinese patent application 20081004156.1 provides a kind of electric stove EBT steel-tapping hole hot repairing dedicated device and method for repairing and mending, it is a kind of electric stove EBT steel-tapping hole hot repairing dedicated device and adopts this device to carry out the method for hot repair, and described device comprises block, sleeve and pallet.By adopting these apparatus and method, hot repair is carried out to tap holes of electric furnace.This invention is inapplicable for hot patching furnace bottom of annular heating furnace.
Summary of the invention
The present invention is intended to solve the problem, and provides a kind of dry type thermal repairing material used for bottom of annular heating furnace.The present invention can realize hot patching, extends Bottom of Heating Furnace work-ing life, ensures that pipe mill normally produces, and reduces the periodical repair working hour simultaneously to greatest extent, reduces the cost of overhaul.
The present invention is achieved in that
A kind of dry type thermal repairing material used for bottom of annular heating furnace, is characterized in that, described dry type thermal repairing material is toasted by the raw material of the component mainly comprising following content and forms:
The clay of 1-3%;
The silicon ash of 1-3%;
The low temperature sintering agent of 1-15%;
Surplus is refractory aggregate.
Described dry type thermal repairing material used for bottom of annular heating furnace, described refractory aggregate comprises one or more in electric smelting or alundum, alumina, electric smelting or fused mullite, andaluzite, sillimanite.
Described refractory aggregate is Al
2o
3high grade bauxite, the Al of>=85%
2o
3the fused corundom of>=98% or Al
2o
3the alundum of>=98%.
Described dry type thermal repairing material used for bottom of annular heating furnace, described low temperature sintering agent comprises one or more in silicate, vitriol, phosphoric acid salt, Pure Silicon Metal, aluminium or iron phosphorus.
Described dry type thermal repairing material used for bottom of annular heating furnace, described dry type thermal repairing material directly carries out lining body at envrionment temperature 800-1000 DEG C and repairs, and at 1200-1300 DEG C of sintering curing.
The present invention adopts dry materials form, highdensity aggregate and powder is introduced in batching, and add low-temperature sintering agent, thus make it about 800 ~ 1000 DEG C time, form initial combination, in 1200 ~ 1300 DEG C time, form pyroceramic combine, in addition, because moisture-free and other liquid parts any in dry materials, so it can implement high-temperature reparation, it also need not carry out maintenance, slowly or for a long time baking to avoid the crackle that occurs due to moisture or other fluent meterial or to peel off in addition.
The combination of material is subject to the number of low temperature sintering agent add-on and the impact of envrionment temperature, when envrionment temperature reach a certain height, material hot side will produce sintering and hardens and form a thermograde in the whole thickness of lining body, along with continuous heating, whole lining body will reach fully sintered gradually.
Adopting dry type thermal repairing material provided by the invention to repair furnace bottom of annular heating furnace, directly can repair at high operating temperatures when not increasing maintenance downtime, thus decrease service work, reduction maintenance cost.
Embodiment
A kind of dry type thermal repairing material used for bottom of annular heating furnace, described dry type thermal repairing material is toasted by the raw material of the component mainly comprising following content and forms:
The clay of 1-3%;
The silicon ash of 1-3%;
The low temperature sintering agent of 1-15%;
Surplus is refractory aggregate.
Described low temperature sintering agent comprises one or more in silicate, vitriol, phosphoric acid salt, Pure Silicon Metal, aluminium or iron phosphorus (ferric oxide).Low temperature sintering agent is the major cause that dry type thermal repairing material is produced sintering and intensity as a kind of bond material.Add-on is lower than 1%, and dry materials sintering is poor, and intensity is too low, and wear resistance is bad; Add-on is higher than 15%, and the low melting point of bringing into is too much mutually, and easily form the material of more low melting point in use procedure and materials'use temperature is reduced, therefore low temperature sintering agent content of the present invention is 1-15%.
Clay, silicon ash all belong to super-fine powder, their existence can help dry materials to produce intensity through low temperature sintering, clay, silicon ash add-on is respectively lower than 1%, its intensity effect produced dry materials low temperature sintering is little, higher than 3%, because itself density is less, after dry materials is burnt, volume density reduces, and then affects dry materials sintering strength.Therefore, clay of the present invention, silicon ash are separately containing 1-3%.
Refractory aggregate in dry type thermal repairing material can be one or more in the refractory raw material such as electric smelting or alundum, alumina, electric smelting or fused mullite, andaluzite, sillimanite.As being main aggregate with alumina, then can Al
2o
3high grade bauxite, the Al of>=85%
2o
3the fused corundom of>=98% or Al
2o
3the alundum kind of>=98% is selected, and pays the utmost attention to the Al that sintering is good
2o
3the high grade bauxite of>=85%, this alumina hardness is high, volume density is large, wear resistance good, and price is also more reasonable.
Use dry type thermal repairing material repair furnace bottom can when not increasing maintenance downtime (monthly periodical repair mechanical means; stop time general 4-6 hour) directly repair at high operating temperatures; thus repair the resistance to material of furnace bottom under achieving the hot condition of rotary heating furnace; improve steel mill's production efficiency; reduce a ton steel production cost, service work can be reduced simultaneously, reduce maintenance cost.
Claims (4)
1. a dry type thermal repairing material used for bottom of annular heating furnace, is characterized in that, described dry type thermal repairing material is by the component comprising following content:
The clay of 1-3%;
The silicon ash of 1-3%;
The low temperature sintering agent of 1-15%;
Surplus is refractory aggregate: described refractory aggregate comprises one or more in electric smelting or alundum, alumina, electric smelting or fused mullite, andaluzite, sillimanite.
2. dry type thermal repairing material used for bottom of annular heating furnace according to claim 1, is characterized in that, described refractory aggregate is Al
2o
3high grade bauxite, the Al of>=85%
2o
3the fused corundom of>=98% or Al
2o
3the alundum of>=98%.
3. dry type thermal repairing material used for bottom of annular heating furnace according to claim 1, is characterized in that, described low temperature sintering agent comprises one or more in silicate, vitriol, phosphoric acid salt, Pure Silicon Metal, aluminium or iron phosphorus.
4. the dry type thermal repairing material used for bottom of annular heating furnace according to claim 1,2 or 3, is characterized in that, described dry type thermal repairing material directly carries out lining body at envrionment temperature 800-1000 DEG C and repairs, and at 1200-1300 DEG C of sintering curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010505272.9A CN102442828B (en) | 2010-10-13 | 2010-10-13 | Dry type thermal repairing material used for bottom of annular heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010505272.9A CN102442828B (en) | 2010-10-13 | 2010-10-13 | Dry type thermal repairing material used for bottom of annular heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102442828A CN102442828A (en) | 2012-05-09 |
| CN102442828B true CN102442828B (en) | 2015-04-01 |
Family
ID=46005815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010505272.9A Active CN102442828B (en) | 2010-10-13 | 2010-10-13 | Dry type thermal repairing material used for bottom of annular heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102442828B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771903A (en) * | 2014-01-03 | 2014-05-07 | 惠达卫浴股份有限公司 | Repairing material and repairing method for sanitary ceramics |
| CN104402465B (en) * | 2014-10-28 | 2016-08-17 | 宁夏天纵泓光余热发电技术有限公司 | Manganese slag composite casting material |
| CN104926322B (en) * | 2015-04-16 | 2017-07-25 | 李金盛 | A kind of SiC rings split renovation agent and preparation method thereof |
| CN104944992A (en) * | 2015-07-12 | 2015-09-30 | 张萍 | Ultrahigh-aluminum cement casting material |
| CN105294119B (en) * | 2015-09-08 | 2017-09-29 | 武汉理工大学 | It is a kind of available for CFBB low-temperature sintering abrasion-proof and refractory patching material and preparation method thereof |
| FR3053327A1 (en) | 2016-06-30 | 2018-01-05 | Imertech | SINKING AGENT FOR DRY REFRACTORY PARTICULATE COMPOSITION |
| CN113200757A (en) * | 2021-04-30 | 2021-08-03 | 郑州东豫新材料科技有限公司 | Thermal-state repairing material for kiln and using method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417549A (en) * | 2001-11-06 | 2003-05-14 | 武汉威林炉衬材料有限责任公司 | Large-area self-flowing converter repairing material |
| CN101423410A (en) * | 2008-11-21 | 2009-05-06 | 太原高科耐火材料有限公司 | Composite combining silica thermal repairing material and preparation method thereof |
| CN101618967A (en) * | 2008-07-02 | 2010-01-06 | 北京瑞普同创科技发展有限公司 | Dry coke quenching furnace circular passage tilt channel regional patching material |
-
2010
- 2010-10-13 CN CN201010505272.9A patent/CN102442828B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417549A (en) * | 2001-11-06 | 2003-05-14 | 武汉威林炉衬材料有限责任公司 | Large-area self-flowing converter repairing material |
| CN101618967A (en) * | 2008-07-02 | 2010-01-06 | 北京瑞普同创科技发展有限公司 | Dry coke quenching furnace circular passage tilt channel regional patching material |
| CN101423410A (en) * | 2008-11-21 | 2009-05-06 | 太原高科耐火材料有限公司 | Composite combining silica thermal repairing material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102442828A (en) | 2012-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102442828B (en) | Dry type thermal repairing material used for bottom of annular heating furnace | |
| CN100537481C (en) | Corundum-silicon nitride-silicon carbide composite pouring material | |
| CN101973775B (en) | Repairing mass and preparation method thereof | |
| CN100467429C (en) | Magnesium gunning refractory for copper smelting-furnace | |
| CN102086128B (en) | Ceramic welding materials for high temperature kiln and a method | |
| US20110034317A1 (en) | Hot gunning repair mix | |
| CN103626506B (en) | Environment-friendly hot patching material for converter | |
| CN101957139A (en) | Furnace lining repairing technology | |
| CN106747505A (en) | A kind of carbon-free converter material for repairing | |
| CN101519311B (en) | Magnesia-carbon gunning material for converter or electric furnace | |
| CN103011847A (en) | Fireproof material for mending furnace as well as preparation method and using method thereof | |
| CN106116611A (en) | A kind of main trough of blast furnace working lining hot jetting material and preparation method thereof | |
| CN109136458A (en) | A kind of quick-acting fettling methods of converter | |
| CN103288460A (en) | Casting material for prefabricating burner block of annular heating furnace | |
| CN106904980A (en) | A kind of magnesium aluminum spinel pouring material of blast furnace iron outlet groove slag corrosion resistance | |
| CN103449803B (en) | Quick-drying anti-explosion refractory castable | |
| CN107010965B (en) | Quick-hardening type blast furnace hearth repairing material and preparation method thereof | |
| CN103922759B (en) | Preparation method of silicon carbide wear-resistant fireproof wind-guiding wall crossbeam and wind-guiding wall brick | |
| CN105060911B (en) | A kind of converter fettling material and production and preparation method thereof | |
| CN106977187A (en) | Mineral hot furnace, cast with multi-functional moldable and preparation method thereof | |
| CN105174982B (en) | Preparation method for the castable of blast furnace tuyere small sleeve and its with tuyere small sleeve | |
| CN101891490A (en) | Crack grouting material for blast furnace body and preparation method thereof | |
| CN101602609B (en) | Method for preparing Fe-Si3N4 fireproof raw material | |
| CN103819205B (en) | A kind of induction furnace fast repairing furnace charge and fettling method | |
| CN103159490B (en) | Swinging chute working lining castable of composite material and preparation method of castable |
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 |