CN109678473A - A kind of ladle liner material for repairing and its preparation method and application - Google Patents
A kind of ladle liner material for repairing and its preparation method and application Download PDFInfo
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- CN109678473A CN109678473A CN201910173889.6A CN201910173889A CN109678473A CN 109678473 A CN109678473 A CN 109678473A CN 201910173889 A CN201910173889 A CN 201910173889A CN 109678473 A CN109678473 A CN 109678473A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
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- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
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Abstract
The present invention relates to a kind of ladle liner material for repairing, by the regeneration corundum aggregate of 5~3mm, regeneration corundum aggregate, 88 μm of < of corundum fine powder, 88 μm of < of magnesia powder, 88 μm of < of soft clay fine powder, 88 μm of < of aluminous cement, 5 μm of silicon powders of < and 5 μm of < of the α-Al for regenerating corundum aggregate, 1~0mm of 3~1mm2O3Micro mist；And water-reducing agent and explosion-proof fiber form, and raw material is stirred evenly up to ladle liner material for repairing.Add 9%~12% water stirring to obtain to repair pug ladle liner material for repairing, be uniformly applied to ladle lining fireproof material surface, 1~3cm of smearing thickness can be used by maintenance baking.The ladle liner material for repairing is cheap, environmentally friendly, intensity is high, erosion-resisting characteristics is strong, service life is high, simple quick, can effectively improve ladle service life 20%~30%, reduce refractory material cost, improve the production efficiency of ladle.
Description
Technical field
The invention belongs to technical field of refractory materials, and in particular to a kind of ladle liner material for repairing and preparation method thereof and answer
With.
Background technique
Ladle lining fireproof material in use, due to steel-making condition fluctuation and refractory material sole mass wave
It is dynamic to be brought greater impact to the service life of online ladle.When local dent, crackle etc. occurs in ladle lining fireproof material
When problem, the normal turnover of ladle is seriously affected.Carrying out sectional repair using ladle of the refractory patching mixture to on-line operation can
The service life of ladle lining fireproof material is greatly improved in pole.Material for repairing is prepared using reclaiming material, on the one hand may be used
To save the expense of raw material, waste and scrap on the other hand can be comprehensively utilized, economize on resources consumption, reduces waste and scrap to ring
The pollution in border.
Chinese invention patent (publication number CN104725053A) discloses the non-slag line material for repairing of carbon-free refining ladle liner,
This material for repairing with the alumine aggregate of 50~75w% or corundum aggregate, the corundum fine powder of 10~30w%, 4~10w% point
The SiO of spar fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3Micro mist, the aluminate cement of 1~5w%, 1~5w%
ρ-aluminium oxide or aluminium Silica hydrogel powder be raw material, it is additional account for raw material weight percentage be 0.1~0.2% water-reducing agent and 0.2~
1.0% plasticizer.The aggregate that the material for repairing uses is alumine aggregate or corundum aggregate, and higher cost is not friendly to environment
It is good.
Summary of the invention
Not to solve aggregate alumine aggregate or corundum aggregate higher cost used in the above-mentioned prior art, to environment
Friendly problem, the present invention provide a kind of ladle liner material for repairing and its preparation method and application.
To solve the above-mentioned problems, the technical solution adopted by the present invention is that:
A kind of ladle liner material for repairing, is indicated with weight percentage, and the material for repairing is made of following raw material: 5~3mm is again
The regeneration corundum aggregate 15% for regenerating corundum aggregate 10%~15%, 1~0mm of raw corundum aggregate 25%~35%, 3~1mm
~20%, 88 μm of < of corundum fine powder 10%~15%, 88 μm of < of magnesia powder 5%~8%, 88 μm of < of soft clay are thin
Powder 3%~5%, 88 μm of < of aluminous cement 5%~8%, 5 μm of silicon powders 1%~3% of < and 5 μm of < of α-Al2O3Micro mist
4%~6%；And account for the water-reducing agent of above-mentioned raw materials total weight 0.2% and 0.1% explosion-proof fiber.
Further, the regeneration of the regeneration corundum aggregate, regeneration the corundum aggregate and 1~0mm of 3~1mm of the 5~3mm
Al in corundum aggregate2O3Mass percentage >=90%, Al in the corundum fine powder2O3Mass percentage >=95%.Again
The recovery method of raw corundum aggregate are as follows: recycling steel mill tears the carbon-free corundum brick of abandoning open, by hand picking, classification, removal impurity, changes
It tests spare using 5~3mm, 3~1mm, the regeneration corundum aggregate of 1~0mm is broken into after qualification.
Further, in the magnesia powder MgO mass percentage >=95%.
Further, Al in the soft clay fine powder2O3Mass percentage >=25%.
Further, Al in the aluminous cement2O3Mass percentage >=70%.
Further, SiO in the silicon powder2Mass percentage >=90%.
Further, the α-Al2O3Al in micro mist2O3Mass percentage >=97%.
Further, the water-reducing agent is sodium tripolyphosphate or calgon.
The present invention also provides a kind of preparation method of ladle liner material for repairing, specifically:
Various raw materials are weighed first, in accordance with the ratio of the ladle liner material for repairing, by the regeneration corundum of weighed 5~3mm
Regeneration corundum aggregate, corundum fine powder, magnesia powder, the soft clay of aggregate, the regeneration corundum aggregate of 3~1mm and 1~0mm are thin
Powder, aluminous cement, silicon powder and α-Al2O3Micro mist, water-reducing agent and explosion-proof fiber are uniformly mixed, and have both obtained ladle liner repairing
Material.The bulk density of products obtained therefrom ladle liner material for repairing is 2.70~2.90gcm-3。
The present invention also provides the construction methods of ladle liner material for repairing: first the different of ladle lining fireproof material surface
Object is cleaned out, and the water of addition 9%~12% is uniformly mixed when ladle liner material for repairing is put into blender, is repaired
Pug is mended, ladle lining fireproof material surface is uniformly applied to, 1~3cm of smearing thickness is carried out after maintenance 4~8 hours
Baking, can come into operation again.Ladle needs replacing multiple air brick, pocket block in use, can carry out every time
Repairing is smeared, the service life of ladle is greatly improved.
Positive beneficial effect of the invention:
1, steel ladle repair material of the invention, compared with the material for repairing of conventionally employed commercially available raw material production, due to adequately utilizing
The waste refractory materials of steel mill, that is, reclaiming corundum material, effectively can economize on resources and reduce the cost of raw material, and
It is environmentally friendly, avoid waste and old refractory material pollution on the environment.The effect of soft clay fine powder is to increase material for repairing
Plasticity and caking property, can effectively be adhered to the surface of material, convenient for construction.Different-grain diameter regenerates the selection of corundum aggregate,
Meet the service performance requirement of steel ladle repair material.
2, steel ladle repair material of the invention, since the regeneration corundum in granules of use have passed through sorting, classification, chemical analysis etc.
Multiple links are controlled, and quality is guaranteed.Furthermore the selection of matrix fine materials, thus this hair are enhanced in process recipe
Bright material for repairing has the characteristics that intensity is high, corrosion-resistant property is strong, service life is high.
3, steel ladle repair material of the invention, construction method is simple, quick, can be repeated and repair to lining material in the ladle
It mends.
In conclusion the ladle liner material for repairing using regeneration corundum material preparation of the invention, cheap, friendly to environment
Well, intensity is high, erosion-resisting characteristics is strong, service life is high, and simple, quick, can effectively improve ladle service life 20%
~30%, refractory material cost is reduced, the production efficiency of ladle is improved.
Specific embodiment
The present invention is further explained with reference to embodiments, but is not intended to limit the contents of the present invention.
Each raw material specific requirement is as follows in following embodiment:
Al in the regeneration corundum aggregate of 5~3mm, the regeneration corundum aggregate for regenerating corundum aggregate and 1~0mm of 3~1mm2O3's
Mass percentage >=90%；Al in corundum fine powder2O3Mass percentage >=95%；The quality percentage of MgO in magnesia powder
Content >=95%；Al in soft clay fine powder2O3Mass percentage >=25%；Al in aluminous cement2O3Quality percentage
Content >=70%；SiO in silicon powder2Mass percentage >=90%；α-Al2O3Al in micro mist2O3Mass percentage >=
97%.
Embodiment 1
A kind of ladle liner material for repairing, is indicated with weight percentage, is made of following raw material:
The regeneration corundum aggregate for regenerating corundum aggregate 35%, the regeneration corundum aggregate 15% of 3~1mm, 1~0mm of 5~3mm
20%, 88 μm of < of corundum fine powder 10%, 88 μm of < of magnesia powder 5%, 88 μm of < of soft clay fine powder 5%, 88 μm of <
Aluminous cement 5%, 5 μm of silicon powders 1% of < and 5 μm of < of α-Al2O3Micro mist 4%；It additionally incorporates and accounts for above-mentioned raw materials total weight
0.2% sodium tripolyphosphate is as water-reducing agent and 0.1% explosion-proof fiber (40 μm of diameter, long 2~3mm).
Embodiment 2
A kind of ladle liner material for repairing, is indicated with weight percentage, is made of following raw material:
The regeneration corundum aggregate for regenerating corundum aggregate 30%, the regeneration corundum aggregate 10% of 3~1mm, 1~0mm of 5~3mm
15%, 88 μm of < of corundum fine powder 15%, 88 μm of < of magnesia powder 8%, 88 μm of < of soft clay fine powder 5%, 88 μm of <
Aluminous cement 8%, 5 μm of silicon powders 3% of < and 5 μm of < of α-Al2O3Micro mist 6%；It additionally incorporates and accounts for above-mentioned raw materials total weight
0.2% calgon is as water-reducing agent and 0.1% explosion-proof fiber (40 μm of diameter, long 2~3mm).
Embodiment 3
A kind of ladle liner material for repairing, is indicated with weight percentage, is made of following raw material:
The regeneration corundum aggregate for regenerating corundum aggregate 25%, the regeneration corundum aggregate 15% of 3~1mm, 1~0mm of 5~3mm
20%, 88 μm of < of corundum fine powder 15%, 88 μm of < of magnesia powder 8%, 88 μm of < of soft clay fine powder 3%, 88 μm of <
Aluminous cement 7%, 5 μm of silicon powders 2% of < and 5 μm of < of α-Al2O3Micro mist 5%；It additionally incorporates and accounts for above-mentioned raw materials total weight
0.2% sodium tripolyphosphate is as water-reducing agent and 0.1% explosion-proof fiber (60 μm of diameter, long 2~3mm).
Embodiment 4
The ladle liner material for repairing of above-described embodiment 1~3 the preparation method comprises the following steps:
Various raw materials are weighed first, in accordance with the ratio of the ladle liner material for repairing of Examples 1 to 3 any embodiment, will be weighed
5~3mm regeneration corundum aggregate, 3~1mm regeneration corundum aggregate and the regeneration corundum aggregate of 1~0mm, corundum fine powder, magnesium
Sand fine powder, soft clay fine powder, aluminous cement fine powder, silicon powder and α-Al2O3Micro mist is uniformly mixed, and water-reducing agent is then added
It is uniformly mixed with explosion-proof fiber, i.e. acquisition ladle liner material for repairing.
See Table 1 for details for the performance test results for the ladle liner material for repairing being prepared using Examples 1 to 3.
The performance test results for the ladle liner material for repairing that table 1 is prepared using Examples 1 to 3
The construction method of 5 ladle liner material for repairing of embodiment
The foreign matter on ladle lining fireproof material surface to be repaired is cleaned out first, the steel that will be prepared in the ratio of embodiment 2
The water of addition 9%~12% is uniformly mixed when in ladle-lining material for repairing investment blender, obtains the repairing for having certain plasticity
Pug, is uniformly applied to ladle lining fireproof material surface, and 1~3cm of smearing thickness carries out baking 12 after maintenance 8 hours
~for 24 hours.It can come into operation again.
The embodiment of the above, only presently preferred embodiments of the present invention, is only used to explain the present invention, not limit
The scope of the present invention processed to those of ordinary skill in the art certainly can be according to skill disclosed in this specification
Art content makes other embodiments easily by way of replacing or changing, therefore all made in the principle of the present invention
Changes and improvements etc., should be included in scope of the present invention patent.
Claims (10)
1. a kind of ladle liner material for repairing, which is characterized in that indicated with weight percentage, the material for repairing is by following raw material group
At: the regeneration corundum for regenerating corundum aggregate 25%~35%, the regeneration corundum aggregate 10%~15% of 3~1mm, 1~0mm of 5~3mm
Aggregate 15%~20%, 88 μm of < of corundum fine powder 10%~15%, 88 μm of < of magnesia powder 5%~8%, 88 μm of < of soft clay
Fine powder 3%~5%, 88 μm of < of aluminous cement 5%~8%, 5 μm of silicon powders 1%~3% of < and 5 μm of < of α-Al2O3Micro mist 4%~
6%；And account for the water-reducing agent of above-mentioned raw materials total weight 0.2% and 0.1% explosion-proof fiber.
2. a kind of ladle liner material for repairing according to claim 1, which is characterized in that the regeneration corundum bone of the 5~3mm
Al in the regeneration corundum aggregate of material, the regeneration corundum aggregate of 3~1mm and 1~0mm2O3Mass percentage >=90%, it is described just
Al in beautiful fine powder2O3Mass percentage >=95%.
3. a kind of ladle liner material for repairing according to claim 1, which is characterized in that the matter of MgO in the magnesia powder
Measure percentage composition >=95%.
4. a kind of ladle liner material for repairing according to claim 1, which is characterized in that Al in the soft clay fine powder2O3
Mass percentage >=25%.
5. a kind of ladle liner material for repairing according to claim 1, which is characterized in that Al in the aluminous cement2O3's
Mass percentage >=70%.
6. a kind of ladle liner material for repairing according to claim 1, which is characterized in that SiO in the silicon powder2Quality
Percentage composition >=90%.
7. a kind of ladle liner material for repairing according to claim 1, which is characterized in that the α-Al2O3Al in micro mist2O3's
Mass percentage >=97%.
8. a kind of ladle liner material for repairing according to claim 1, which is characterized in that the water-reducing agent is sodium tripolyphosphate
Or calgon.
9. a kind of preparation method of ladle liner material for repairing, which is characterized in that specifically: it is any first, in accordance with claim 1~8
The ratio of ladle liner material for repairing described in weighs various raw materials, by the regeneration corundum aggregate of weighed 5~3mm, 3~
Regeneration corundum aggregate, corundum fine powder, magnesia powder, the soft clay fine powder, calcium aluminate of regeneration the corundum aggregate and 1~0mm of 1mm
Cement, silicon powder and α-Al2O3Micro mist, water-reducing agent and explosion-proof fiber are uniformly mixed, i.e., acquisition ladle liner material for repairing, gained produce
The bulk density of product ladle liner material for repairing is 2.70~2.90 gcm-3。
10. a kind of construction method of ladle liner material for repairing, which is characterized in that specifically: first ladle lining fireproof material
The foreign matter on surface is cleaned out, and is added 9%~12% when by the resulting ladle liner material for repairing investment blender of claim 9
Water is uniformly mixed, and obtains repairing pug, is uniformly applied to ladle lining fireproof material surface, 1~3cm of smearing thickness, warp
After crossing maintenance in 4~8 hours, is toasted, can be come into operation again.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642610A (en) * | 2019-06-28 | 2020-01-03 | 广东韶钢松山股份有限公司 | Refractory brick for steel receiving opening of tundish and preparation method thereof |
| CN112409001A (en) * | 2020-11-24 | 2021-02-26 | 瑞泰马钢新材料科技有限公司 | Aluminum-magnesium repairing material for steel ladle and preparation method thereof |
| CN112979293A (en) * | 2021-03-04 | 2021-06-18 | 江苏嘉耐高温材料股份有限公司 | Self-flowing hot supplement material for refining ladle air brick and manufacturing method and using method thereof |
| CN112979291A (en) * | 2021-04-02 | 2021-06-18 | 郑州振东科技有限公司 | Steel ladle repairing material produced by recycling waste corundum base brick material and method for repairing steel ladle lining by using steel ladle repairing material |
| CN115321962A (en) * | 2022-07-22 | 2022-11-11 | 盐城市联鑫钢铁有限公司 | Long-life ladle and method for prolonging service life of converter ladle |
| CN115925396A (en) * | 2022-11-30 | 2023-04-07 | 钢城集团凉山瑞海实业有限公司 | Slag line repairing material for prolonging service life of magnesia carbon brick |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112409001A (en) * | 2020-11-24 | 2021-02-26 | 瑞泰马钢新材料科技有限公司 | Aluminum-magnesium repairing material for steel ladle and preparation method thereof |
| CN112979293A (en) * | 2021-03-04 | 2021-06-18 | 江苏嘉耐高温材料股份有限公司 | Self-flowing hot supplement material for refining ladle air brick and manufacturing method and using method thereof |
| CN112979291A (en) * | 2021-04-02 | 2021-06-18 | 郑州振东科技有限公司 | Steel ladle repairing material produced by recycling waste corundum base brick material and method for repairing steel ladle lining by using steel ladle repairing material |
| CN112979291B (en) * | 2021-04-02 | 2022-12-09 | 郑州振东科技有限公司 | Steel ladle repairing material produced by recycling waste corundum base brick material and method for repairing steel ladle lining by using steel ladle repairing material |
| CN115321962A (en) * | 2022-07-22 | 2022-11-11 | 盐城市联鑫钢铁有限公司 | Long-life ladle and method for prolonging service life of converter ladle |
| CN115925396A (en) * | 2022-11-30 | 2023-04-07 | 钢城集团凉山瑞海实业有限公司 | Slag line repairing material for prolonging service life of magnesia carbon brick |
| CN115925396B (en) * | 2022-11-30 | 2023-10-10 | 钢城集团凉山瑞海实业有限公司 | Slag line repairing material for prolonging service life of magnesia carbon brick |
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