CN1827789A - Joint filler for converter tuyere brick replacing - Google Patents
Joint filler for converter tuyere brick replacing Download PDFInfo
- Publication number
- CN1827789A CN1827789A CN 200510024117 CN200510024117A CN1827789A CN 1827789 A CN1827789 A CN 1827789A CN 200510024117 CN200510024117 CN 200510024117 CN 200510024117 A CN200510024117 A CN 200510024117A CN 1827789 A CN1827789 A CN 1827789A
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- China
- Prior art keywords
- tuyere brick
- joint filler
- converter
- converter tuyere
- brick replacing
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates the fireproof material, especially the joint filling material used to change revolving furnace tuyere brick. The material comprises 60-80% good magnesia, 20-40% anchoring agent and 0.2-6% addition agent. The invention has good self liquidity. The material is heated, and flows into the gap between tuyere brick and furnace bottom. The material has good intensity, oxidation resistance, and durability.
Description
(1) technical field
The present invention relates to refractory materials, relate in particular to and be applied to the seam sealer that uses when steel-making converter blows air supply brick again and changes.
(2) background technology
For work-ing life and the usage ratio of equipment that improves converter, general requirement is changed tuyere brick in a converter stove labour.Can produce the slit between at the bottom of tuyere brick and the converter, need to adopt the heat self-flow stopping composition, otherwise occur the bleed-out accident easily at the place, slit of furnace bottom and tuyere brick boundary.
Existing converter repair material is magnesia and magnesium carbonaceous repair material, most use the pitch combination, also useful resin-bonded.Introduced the repair material that tuyere zone is used as Japanese patent laid-open 5-209213, it is a magnesia 100, liquid heat-reactive phenolic resin 8～20%.This material has good normal temperature self drainage, but following point occurs: 1) temperature has little time levelling and has just solidified often more than 600 ℃ in the stove when hot repair.Therefore this repair material just can not hot levelling; 2) heat-reactive phenolic resin wedding agent staging life very short, particularly with after magnesia mixes should use up very soon, lost efficacy otherwise just solidify; 3) at short period of time solidified repair material, the ventilation property of thermosetting resin is very poor, is very easy to explosion and peels off.
Tradition converter thermal repairing material mainly makes with pitch magnesia, and its feature is cheap, but over-emitting black exhaust and wearing quality are relatively poor during use.Can't clog slit between changing at the bottom of tuyere brick and the converter with it.Mainly be because its flowability not enough, can not flow into little slit and produce filling and combination.
(3) summary of the invention
The object of the present invention is to provide a kind of joint filler for converter tuyere brick replacing, its heat self-flow is good, can flow into after the chance heat in the slit between tuyere brick and the furnace bottom, combining securely at the bottom of tuyere brick and the converter, so just prevent the generation of bleed-out accident behind the process high temperature cabonization.
The present invention is achieved in that a kind of joint filler for converter tuyere brick replacing, it is characterized in that comprising 60～80% quality magnesias, 20～40% wedding agents and adds 0.2～6% additive.
Above-mentioned joint filler for converter tuyere brick replacing, described quality magnesia are the electrosmelted magnesite clinker or the magnesite clinker of MgO＞96%, and the critical particle of quality magnesia is less than 1mm.The particle of quality magnesia divides 1/0.088 and＜0.088 two portions, and both ratios are 0.5～5.
Above-mentioned joint filler for converter tuyere brick replacing, described additive are silica flour, aluminium powder, magnesium aluminum-alloy powder and boron carbide powder one or both of or the combination more than the two.
Above-mentioned joint filler for converter tuyere brick replacing, described wedding agent are modified phenolic resins and bituminous combination, and the bituminous granularity is less than 1mm.Modified phenolic resins is formed by two kinds, and a kind of is pressed powder, and another kind is the liquid phenolic resin wedding agent.
The present invention is directed to the seam sealer in a kind of heat self-flow joint filling crack of using after the converter air port is changed.Its heat self-flow good after more finishing changing tuyere brick, dropped into repair material of the present invention from the converter mouth, can flow in tuyere brick and the slit at the end after meeting heat, and through high temperature cabonization, combining securely at the bottom of tuyere brick and the converter.So just prevented the generation of bleed-out accident.This seam sealer has the cohesive strength height, anti-scouring and anti-washing away.
(4) embodiment
The process for making of joint filler for converter tuyere brick replacing is as follows: at first 1/0.088 magnesia is placed in the muller, put the liquid phenolic resin wedding agent then, coated and mix after, add pitch and modified phenolic resin binder powder, after mixing, get final product.
During use, this repair material is placed in the converter, then, holds up stove, make heat self-flow moving in tuyere brick and the slit at the end, and curing and carbonization, stop up the slit and produce mortise.Avoided the generation of bleed-out accident in the slit like this.After seam sealer curing, the carbonization very high intensity is arranged, the erosion of anti-molten steel is good, and has good oxidation-resistance, hot strength, cementability and wearing quality.
Embodiment sees Table 1
Listed 3 embodiment and 2 Comparative Examples in the table 1, can see from performance index: the gravity flow of three embodiment is clogged minimum slit width and is 5mm to the maximum, and the cohesive strength minimum is 5.5Mpa, all is much higher than the index of Comparative Examples.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative Examples 1 | Comparative Examples 2 | |||
| Electrosmelted magnesite clinker | 10～1mm | 0 | 0 | 0 | 50 | 50 | |
| 1～0.088mm | 40 | 40 | 40 | 20 | 20 | ||
| ＜0.088mm | 37 | 37 | 33 | 30 | 30 | ||
| Additive | Boron carbide powder (adding) | 3 | / | 1 | / | / | |
| Aluminium powder (adding) | 1 | 4 | 4 | / | / | ||
| Silica flour (adding) | / | 1 | / | / | / | ||
| Wedding agent | Modified phenolic resin cosmetics | 1 | 2 | 3 | / | / | |
| Liquid modifying resol | 2 | 1 | 4 | / | / | ||
| The coal-tar pitch powder | 20 | 20 | 20 | 20 (adding) | / | ||
| Heat-reactive phenolic resin | / | / | / | / | 15 (adding) | ||
| Performance | The minimum slit width of gravity flow filling | 5mm | 4mm | 3.5mm | 15mm | Do not flow automatically | |
| Cohesive strength (MPa) | 5.5 | 6 | 7 | 2 | 0.2 | ||
Claims (6)
1. joint filler for converter tuyere brick replacing is characterized in that comprising 60～80% quality magnesias, 20～40% wedding agents and adds 0.2～6% additive.
2. joint filler for converter tuyere brick replacing according to claim 1 is characterized in that quality magnesia is the electrosmelted magnesite clinker or the magnesite clinker of MgO＞96%, and the critical particle of quality magnesia is less than 1mm.
3. joint filler for converter tuyere brick replacing according to claim 2, the particle that it is characterized in that quality magnesia divide 1/0.088 and＜0.088 two portions, and both ratios are 0.5～5.
4. joint filler for converter tuyere brick replacing according to claim 1 is characterized in that additive is silica flour, aluminium powder, magnesium aluminum-alloy powder and boron carbide powder one or both of or the combination more than the two.
5. joint filler for converter tuyere brick replacing according to claim 1 is characterized in that wedding agent is modified phenolic resins and bituminous combination, and the bituminous granularity is less than 1mm.
6. joint filler for converter tuyere brick replacing according to claim 5 is characterized in that modified phenolic resins forms by two kinds, and a kind of is pressed powder, and another kind is the liquid phenolic resin wedding agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024117 CN1827789A (en) | 2005-02-28 | 2005-02-28 | Joint filler for converter tuyere brick replacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024117 CN1827789A (en) | 2005-02-28 | 2005-02-28 | Joint filler for converter tuyere brick replacing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1827789A true CN1827789A (en) | 2006-09-06 |
Family
ID=36946341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510024117 Pending CN1827789A (en) | 2005-02-28 | 2005-02-28 | Joint filler for converter tuyere brick replacing |
Country Status (1)
| Country | Link |
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| CN (1) | CN1827789A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603310A (en) * | 2011-09-06 | 2012-07-25 | 孙宇飞 | Quick sintering repairing mass used for steel mill converter |
| CN109535716A (en) * | 2018-10-18 | 2019-03-29 | 江苏澳盛复合材料科技有限公司 | A kind of and good polyphenylene sulfide/carbon fibre composite of metal adhesion |
| CN114378290A (en) * | 2021-12-13 | 2022-04-22 | 首钢京唐钢铁联合有限责任公司 | Tundish water feeding port installation method |
| CN115304360A (en) * | 2022-08-02 | 2022-11-08 | 浙江自立高温科技股份有限公司 | Joint filling material capable of preventing steel leakage for converter bottom blowing circular seam type gas supply system and preparation and application thereof |
-
2005
- 2005-02-28 CN CN 200510024117 patent/CN1827789A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603310A (en) * | 2011-09-06 | 2012-07-25 | 孙宇飞 | Quick sintering repairing mass used for steel mill converter |
| CN102603310B (en) * | 2011-09-06 | 2014-05-14 | 孙宇飞 | Quick sintering repairing mass used for steel mill converter |
| CN109535716A (en) * | 2018-10-18 | 2019-03-29 | 江苏澳盛复合材料科技有限公司 | A kind of and good polyphenylene sulfide/carbon fibre composite of metal adhesion |
| CN114378290A (en) * | 2021-12-13 | 2022-04-22 | 首钢京唐钢铁联合有限责任公司 | Tundish water feeding port installation method |
| CN114378290B (en) * | 2021-12-13 | 2024-03-19 | 首钢京唐钢铁联合有限责任公司 | Tundish water feeding port installation method |
| CN115304360A (en) * | 2022-08-02 | 2022-11-08 | 浙江自立高温科技股份有限公司 | Joint filling material capable of preventing steel leakage for converter bottom blowing circular seam type gas supply system and preparation and application thereof |
| CN115304360B (en) * | 2022-08-02 | 2023-09-08 | 浙江自立高温科技股份有限公司 | Gap filler capable of preventing steel leakage for converter bottom blowing circular seam type air supply system and preparation and application thereof |
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