CN101665852A - Method for repairing metal mixer casting lining - Google Patents
Method for repairing metal mixer casting lining Download PDFInfo
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- CN101665852A CN101665852A CN200910017759A CN200910017759A CN101665852A CN 101665852 A CN101665852 A CN 101665852A CN 200910017759 A CN200910017759 A CN 200910017759A CN 200910017759 A CN200910017759 A CN 200910017759A CN 101665852 A CN101665852 A CN 101665852A
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- metal mixer
- lining
- mould
- refractory materials
- casting lining
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Abstract
The invention relates to a method for repairing a metal mixer casting lining, belonging to the technical field of high-temperature container reparation in steel production. In the later using period of a metal mixer casting lining furnace, the metal mixer casting lining can be completely repaired by stopping and cooling the furnace, cleaning surface refractory materials on peripheral slag lines, asteel receiving hole and a steel tapping passage area, erecting a mould, casting refractory materials at a second time and naturally maintaining the refractory materials. The method shortens the recasting time of the metal mixer casting lining after the metal mixer casting lining is detached and saves the consumption of the refractory materials.
Description
Technical field
The present invention relates to a kind of repairing metal mixer casting lining technology, belong in the Iron and Steel Production elevated temperature vessel and build by laying technical field.
Background technology
Hot metal mixer is to be used for even hot metal composition, temperature and splendid attire molten iron equipment in the converter steelmaking flow process, along with molten iron constantly is blended into and pours out hot metal mixer, the blast furnace mixer casting material liner is etched loss gradually, after using for some time, need metal mixer casting lining to carry out maintenance or complete removal mould material liner is poured into a mould again.Hot metal mixer liner mould material has globality and good second pouring reparation property, after using for some time, the refractory lining erosion areas is mainly at the molten iron liquid level position, be the slag line zone, and be blended into and pour out the railway that of molten iron that the anti-material in all the other positions corrodes loss seldom, the liner complete removal is poured into a mould again, anti-material has been caused great waste, and the repair time of stopping using is long, influences production efficiency.
Summary of the invention
At the deficiency on the prior art, the invention provides a kind of method of repairing metal mixer casting lining, not exclusively removing on the basis of hot metal mixer liner, metal mixer casting lining is repaired fully.
Technical scheme of the present invention is as follows:
A kind of method of repairing metal mixer casting lining, comprise the blowing out cooling, surface refractory materials cleaning, install mould, pouring fireproof material is characterized in that, the cleaning of surperficial refractory materials around slag line, be subjected to the iron mouth or go out the railway zone to carry out, all around slag line, be subjected to the iron mouth or go out the refractory materials full scale clearance that the railway zone weathers long-pending more than 90% to exposing former mould material aspect, install behind the mould second pouring refractory materials between former mould material aspect and mould.
Preferably, second pouring uses and the identical refractory castable of former lining material, parks maintenance 1-2 days solidifying formation naturally.
After maintenance is shaped, remove the mould that installs, furnace lining is baked to 1000-1200 ℃, can come into operation.
Preferably, described blowing out cooling is adopted the pressure of ventilating to cool off or spray atomized water and is forced cooling.Can save and mix iron cooling time.
Since around slag line, be subjected to the iron mouth or go out railway zone refractory corrosion damaed cordition inequality, so the distance that the second pouring refractory thickness is pressed between mould and the former mould material aspect gets final product.Slag line second pouring refractory materials maximum ga(u)ge can reach 950-1100mm (central box is the mould that installs shown among Fig. 1 9) wherein.
Refractory castable of the present invention is all by prior art.
Compared with prior art the invention has the beneficial effects as follows:
Do not need to remove fully the hot metal mixer liner, only to around slag line, be subjected to the iron mouth and go out the railway zone, carry out surperficial anti-material cleaning, install mould, second pouring (cover waters) promptly reaches the purpose of repairing liner shape and good usability fully, reduce the refractory consumption rate amount, shorten hot metal mixer and stop using the repair time, increase the service life, reduce steel-making cost.
Description of drawings
Fig. 1 is slag line before and after embodiment 1 metal mixer casting lining to be repaired, is subjected to iron mouth erosion condition synoptic diagram; Slag line corrodes loss part (the fan-shaped white space in the left and right sides) before and after 1 hot metal mixer, 2 are subjected to the iron port area to corrode slag line, 6 hot metal mixer mouths around the loss part (top does not have the filled band) 5, be subjected to the iron mouth, 7 go out the railway zone, 8 former liners, the mould that the slag line zone installs around 9,10 moulds that installed by the iron port area.The unit of data is millimeter among the figure.
Fig. 2 is embodiment 1 metal mixer casting lining to be repaired left and right sides slag line, go out railway corrodes the shape synoptic diagram.Loss part (the fan-shaped white space in the left and right sides) is corroded in the 3 hot metal mixer left and right sides, and 4 for going out railway erosion loss part (middle shade filled band), and 11 go out the mould that the railway zone installs.The unit of data is millimeter among the figure.
Embodiment
Embodiment 1:
Metal mixer casting lining erosion condition to be repaired is referring to accompanying drawing 1,2.The method of repairing metal mixer casting lining, step is as follows:
1. blowing out cooling:
Plan blowing out, adjust in advance and be blended into, pour out the iron water amount fluctuation range, flushing mould material inner lining surface slag blanket, molten iron in the stove of turning then, the employing ventilation is forced to cool or is sprayed atomized water and force cooling.
All around slag line, be subjected to the iron mouth and go out the anti-material of railway region surface to clear up:
All around slag line 5, be subjected to iron mouth 6 and go out the anti-material full scale clearance of railway zone 7 surperficial molten iron, slag action, expose original mould material, bare area reaches 90%.
3. install mould:
All around slag line 5, be subjected to iron mouth 6 and go out railway zone 7 to install mould 9,10,11 respectively according to new furnace lining size.
4. second pouring (cover waters):
Cast and the identical refractory castable of former lining material between mold periphery that installs and the former liner of anti-material the 8, and facilitated is shaped.Wherein slag line second pouring material maximum ga(u)ge is 1100mm, 990mm (the fan-shaped white space in Fig. 1 left and right sides is a pouring section) before and after the hot metal mixer, and hot metal mixer left and right sides slag line second pouring material maximum ga(u)ge is 950mm, 1010mm (the fan-shaped white space in Fig. 2 left and right sides is a pouring section); The second pouring refractory matter is identical with former lining material, used refractory castable composition of raw materials following (weight percent): brown corundum 25%, sub-white corundum 48%, silicon carbide 14%, silicon powder 5%, graphite carbon 4%, pure calcium aluminate cement 4%.
5. cast back natural curing:
After second pouring finished, natural curing was shaped in 1 day.
6. remove mould, toast and come into operation:
Dismounting installs mould, comes into operation after furnace lining is baked to 1100 ℃.
With 600t hot metal mixer repairing metal mixer casting lining is example, the hot metal mixer furnace lining of new cast, use 12-18 month needs to repair casting lining, use the method furnace lining reparation of present embodiment once need use refractory materials 60-80 ton, 20 days times spent, need with refractory materials 320-340 ton, 45 days times spent and adopt the furnace lining complete removal to pour into a mould again, the practical application proof adopts the inventive method repairing metal mixer metal mixer casting lining to save refractory materials more than 200 tons, shorten the hot metal mixer down time more than 20 days.
Claims (4)
1, a kind of method of repairing metal mixer casting lining, comprise the blowing out cooling, surface refractory materials cleaning, install mould, pouring fireproof material is characterized in that, the cleaning of surperficial refractory materials around slag line, be subjected to the iron mouth or go out the railway zone to carry out, all around slag line, be subjected to the iron mouth or go out the refractory materials full scale clearance that the railway zone weathers long-pending more than 90% to exposing former mould material aspect, install behind the mould second pouring refractory materials between former mould material aspect and mould.
2, the method for repairing metal mixer casting lining as claimed in claim 1 is characterized in that second pouring uses and the identical refractory castable of former lining material, parks maintenance 1-2 days solidifying formation naturally.
3, the method for repairing metal mixer casting lining as claimed in claim 2, it is characterized in that maintenance is shaped after, remove the mould that installs, furnace lining is baked to 1000-1200 ℃ comes into operation.
4, the method for repairing metal mixer casting lining as claimed in claim 1 is characterized in that employing ventilation pressure cooling is cooled off in described blowing out or the pressure of sprinkling atomized water is cooled off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910017759A CN101665852A (en) | 2009-08-28 | 2009-08-28 | Method for repairing metal mixer casting lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910017759A CN101665852A (en) | 2009-08-28 | 2009-08-28 | Method for repairing metal mixer casting lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101665852A true CN101665852A (en) | 2010-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN200910017759A Pending CN101665852A (en) | 2009-08-28 | 2009-08-28 | Method for repairing metal mixer casting lining |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019417A (en) * | 2010-11-17 | 2011-04-20 | 莱芜钢铁股份有限公司 | Method for building steel ladle pouring working lining |
| CN102519259A (en) * | 2011-12-27 | 2012-06-27 | 攀枝花钢城集团有限公司 | Crucible repairing method of medium frequency induction furnace |
| CN108115123A (en) * | 2017-11-23 | 2018-06-05 | 武汉钢铁集团耐火材料有限责任公司 | The maintaining method of fish torpedo ladle straight tube slag line area working lining |
| CN112097526A (en) * | 2020-08-24 | 2020-12-18 | 山东墨龙石油机械股份有限公司 | Refractory repair method for smelting reduction furnace slag area |
| CN113108607A (en) * | 2021-04-15 | 2021-07-13 | 嘉峪关宏电铁合金有限责任公司 | Quick repairing process for lining of silicomanganese ore heating furnace with super furnace age |
-
2009
- 2009-08-28 CN CN200910017759A patent/CN101665852A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019417A (en) * | 2010-11-17 | 2011-04-20 | 莱芜钢铁股份有限公司 | Method for building steel ladle pouring working lining |
| CN102019417B (en) * | 2010-11-17 | 2012-10-03 | 山东钢铁股份有限公司 | Method for building steel ladle pouring working lining |
| CN102519259A (en) * | 2011-12-27 | 2012-06-27 | 攀枝花钢城集团有限公司 | Crucible repairing method of medium frequency induction furnace |
| CN108115123A (en) * | 2017-11-23 | 2018-06-05 | 武汉钢铁集团耐火材料有限责任公司 | The maintaining method of fish torpedo ladle straight tube slag line area working lining |
| CN108115123B (en) * | 2017-11-23 | 2020-02-14 | 武汉钢铁集团耐火材料有限责任公司 | Maintenance method for working layer of straight barrel slag line area of torpedo ladle |
| CN112097526A (en) * | 2020-08-24 | 2020-12-18 | 山东墨龙石油机械股份有限公司 | Refractory repair method for smelting reduction furnace slag area |
| CN113108607A (en) * | 2021-04-15 | 2021-07-13 | 嘉峪关宏电铁合金有限责任公司 | Quick repairing process for lining of silicomanganese ore heating furnace with super furnace age |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100310 |