CN105967702A - Slide gate brick and preparation method thereof - Google Patents
Slide gate brick and preparation method thereof Download PDFInfo
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- CN105967702A CN105967702A CN201610298729.0A CN201610298729A CN105967702A CN 105967702 A CN105967702 A CN 105967702A CN 201610298729 A CN201610298729 A CN 201610298729A CN 105967702 A CN105967702 A CN 105967702A
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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
- C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
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Abstract
The invention provides a slide gate brick. The brick is prepared by the following components in percentages by mass: 80-89.9wt% of magnesia; 5-10wt% of metal aluminium; 1-3wt% of carbon black; 1-3wt% of an additive; and 3-5wt% of resin. The slide gate brick has the advantages of high refractoriness, good thermal shock stability, good stripping resistance, and good erosion resistance for slags; the slide gate brick has higher adaptability to high manganese steel, high calcium steel, high oxygen steel, and alloy steel; compared with the traditional magnesium slide gate brick which is baked at high temperature, magnesium aluminate spinel is not added into the preparation raw materials, high temperature is not needed for baking, so that energy is saved.
Description
Technical field
The invention belongs to technical field of refractory materials, be specifically related to a kind of sliding plate brick and preparation method thereof.
Background technology
Sliding plate brick is the important refractory material of the one during process for making, is mainly used in converter, molten steel
Tank and tundish flow control.The sliding plate brick that current each steel mill uses mainly has aluminum carbonaceous, aluminum zirconium carbonaceous and magnesia
Slide plate.When casting potassium steel, high calcium steel, high-oxygen steel, aluminum carbonaceous and aluminum zirconium carbonaceous slide plate work surface with
Contacting in molten steel, there is chemical reaction in the oxygen in meeting molten steel and CaO, MnO in slag, makes sliding plate brick
Working lining structure becomes loose, causes that the structural peeling of sliding plate brick, reaming be big, folder steel, and then impact is sliding
The access times of plate brick, even threaten steel-making safety in production to run.Therefore, the application of magnesia sliding plate brick is more
Add extensively, and traditional magnesia sliding plate brick thermal shock resistance poor (after slide plate rolls off the production line, crackle is many, more than 4),
Easily peeling off, major part only uses once.
For highly aggressive steel grade, such as potassium steel, high calcium steel, high-oxygen steel, technical staff is studying always
The sliding plate brick of exploitation suitable material meets steel grade requirement.The magnalium carbonaceous of Application No. 201110157006.6
Sliding plate brick adds the magnesium aluminate spinel of 10-30 part by using, and can improve the thermal shock resistance of slide plate and resist
Scouring performance, but compare magnesia, spinel charge cost is high；Application No. 200410010211.X
Magnesia sliding plate brick needs to burn till under the conditions of 1550-1680 DEG C, burns till costly and the most energy-conservation.Therefore, system
It is standby that a kind of thermal shock resistance is good, firing temperature is low and low cost sliding plate brick becomes the needs of industry development.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of sliding plate brick and preparation method thereof,
The sliding plate brick thermal shock resistance that the present invention provides is good, firing temperature is low and low cost.
The invention provides a kind of sliding plate brick, the composition of following mass percent be prepared from:
The magnesia of 80wt%～89.9wt%；
The metallic aluminium of 5wt%～10wt%；
The white carbon black of 1wt%～3wt%；
The additive of 1wt%～3wt%；
The resin of 3wt%～5wt%.
Preferably, described magnesia is selected from fused magnesite.
Preferably, described magnesia includes:
The particle diameter of 25wt%～35wt% is 1～3mm and is not equal to the magnesia particle of 1mm；
The particle diameter of 30wt%～35wt% is 0.074～1mm and is not equal to the magnesia particle of 0.074mm；
The magnesia powder of the particle diameter≤0.074mm of 15wt%～25wt%.
Preferably, described metallic aluminium is metallic aluminium granule or the metallic aluminium fiber being smaller in size than 0.088mm.
Preferably, one or both in boron carbide and boron nitride of described additive.
Preferably, described resin one in liquid thermosetting phenolic resin or organic-silicon-modified resin
Or it is multiple.
Present invention also offers the preparation method of a kind of above-mentioned sliding plate brick, comprise the following steps:
By metallic aluminium, additive, white carbon black, magnesia and mixed with resin, obtain compound；
Described compound is shaped successively, is dried, toasts and sinters, obtains sliding plate brick precursor；
Described sliding plate brick precursor is carried out oil immersion, hoop-driving, grinding, veneer and coating successively, obtains
Sliding plate brick.
Preferably, comprise the following steps:
A) magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074mm is mixed, obtain
Mixed-powder；
B) by after the magnesia particle of particle diameter ＞ 0.074mm and resin mixed grind, add described mixed-powder and enter
Row mixed grind, obtains compound；
C) described compound is shaped successively, is dried, toasts and sinters, obtain sliding plate brick precursor；
D) described sliding plate brick precursor is carried out oil immersion, hoop-driving, grinding, veneer and coating successively,
To sliding plate brick.
Preferably, the temperature of described baking is 200～220 DEG C, and the time of described baking is not less than 24h.
Preferably, the temperature of described sintering is 600～800 DEG C, and the time of described sintering is more than 6 hours.
Compared with prior art, the invention provides a kind of sliding plate brick, by the composition of following mass percent
It is prepared from: the magnesia of 85wt%～92wt%；The metallic aluminium of 5wt%～10wt%；The charcoal of 1wt%～3wt%
Black；The additive of 1wt%～3wt%；The resin of 3wt%～5wt%.The sliding plate brick refractoriness that the present invention provides
Height, good thermal shock resistance, anti-strip, anti-scour property is good, the sliding plate brick pair that the present invention provides
Potassium steel, high calcium steel, high-oxygen steel and steel alloy have higher adaptability；Magnesia cunning is burnt till with conventional high-temperature
Plate brick is compared, and prepares and is added without magnesium aluminate spinel in raw material, it is not necessary to high temperature burns till, and can save the energy.
Result shows, apparent porosity ＜ 6.5% of the sliding plate brick that the present invention provides, bulk density is more than
2.99g/cm3, cold crushing strength is more than 95MPa, 1400 DEG C of high temperature break resistant intensity ＞ 16MPa, even burns
Stove number ＞ 2 times, reaming is little, slight sliding area plucking, slide plate roll off the production line after crack number≤6.
Detailed description of the invention
The invention provides a kind of sliding plate brick, the composition of following mass percent be prepared from:
The magnesia of 80wt%～89.9wt%；
The metallic aluminium of 5wt%～10wt%；
The white carbon black of 1wt%～3wt%；
The additive of 1wt%～3wt%；
The resin of 3wt%～5wt%.
The raw material preparing sliding plate brick that the present invention provides includes magnesia, and in the present invention, described magnesia is selected
Highly-purity magnesite, described magnesia preferably employs fused magnesite.Wherein, when carrying out the preparation of sliding plate brick, institute
State magnesia preferably to be mixed by the magnesia of different-grain diameter.It is furthermore preferred that described magnesia includes:
The particle diameter of 25wt%～35wt% is 1～3mm and is not equal to the magnesia particle of 1mm；
The particle diameter of 30wt%～35wt% is 0.074～1mm and is not equal to the magnesia particle of 0.074mm；
The magnesia powder of the particle diameter≤0.074mm of 15wt%～25wt%.
In the present invention, the addition of described magnesia is 80wt%～89.9wt%, is preferably
81wt%～88wt%, more preferably 83wt%～86wt%.
In the present invention, the described raw material preparing sliding plate brick also includes metallic aluminium, and described metallic aluminium is preferably
It is smaller in size than metallic aluminium granule or the metallic aluminium fiber of 0.088mm.The addition of described metallic aluminium is preferably
5wt%～10wt%, more preferably 6wt%～9wt%
The present invention prepares the raw material of sliding plate brick and also includes white carbon black, and the particle diameter of described white carbon black is preferably less than
0.074mm.The addition of described white carbon black is preferably 1wt%～3wt%, more preferably 1.5wt%～2.5wt%.
Sliding plate brick prepared by the present invention also includes additive, and described additive is preferably to be changed in boron and boron nitride
One or both.The addition of described additive is preferably 1wt%～3wt%, more preferably
1.5wt%～2.5wt%.
Sliding plate brick prepared by the present invention also includes resin, described resin selected from liquid thermosetting phenolic resin or
One or more in organic-silicon-modified resin.The addition of described resin is preferably 3wt%～5wt%, more
It is preferably 3.5wt%～4.5wt%.
The present invention does not has particular restriction to the source of above-mentioned raw materials, the most commercially available.
Present invention also offers the preparation method of a kind of above-mentioned sliding plate brick, comprise the following steps:
By metallic aluminium, additive, white carbon black, magnesia and mixed with resin, obtain compound；
Described compound is shaped successively, is dried, toasts and sinters, obtains sliding plate brick precursor；
Described sliding plate brick precursor is carried out oil immersion, hoop-driving, grinding, veneer and coating successively, obtains
Sliding plate brick.
Preferably, described sliding plate brick is prepared as follows:
A) magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074 is mixed, mixed
Close powder；
B) by after the magnesia particle of particle diameter ＞ 0.074mm and resin mixed grind, add described mixed-powder and enter
Row mixed grind, obtains compound；
C) described compound is shaped successively, is dried, toasts and sinters, obtain sliding plate brick precursor；
D) described sliding plate brick precursor is carried out oil immersion, hoop-driving, grinding, veneer and coating successively,
To sliding plate brick.
First the magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074 is mixed by the present invention,
Obtain mixed-powder.The present invention does not has particular restriction, those skilled in the art to the method for described mixing
Known can be by the method for above-mentioned raw materials powder mix homogeneously.
After obtaining mixed-powder, the present invention by after the magnesia particle of particle diameter ＞ 0.074mm and resin mixed grind,
Add described mixed-powder and carry out mixed grind, obtain compound.
In the present invention, to the not spy of the equipment used by the mixed grind of raw material in described compound preparation process
Different restriction, it is preferred to use planetary type wheel mill.
Concrete, after the magnesia particle of particle diameter ＞ 0.074mm is added planetary type wheel mill, add resin,
Mixed grind 2 minutes, adds above-mentioned mixed-powder, mixed grind 30～60 minutes, obtains compound.
After obtaining compound, described compound is shaped successively, is dried, toasts and sinters,
To sliding plate brick precursor.
The present invention does not has particular restriction to the method for described compound molding, it is preferred to use electric screw pressure
Power machine carries out machine and breaks into type.Concrete:
Use more than 400 tons electric screw press to hit more than 12 times, form sliding plate brick just base.
Then, sliding plate brick just base is dried, toasts and sinters.
In the present invention, described being dried is preferably natural drying, places the most at ambient temperature, enters
The time of row natural drying is preferably 24h.
After natural drying terminates, being toasted by described sliding plate brick just base, the temperature of described baking is preferably
200～220 DEG C, the time of described baking is preferably not less than 24h.
After baking terminates, it is sintered, obtains sliding plate brick precursor.Wherein, the temperature of described sintering is preferred
Being 600～800 DEG C, more preferably 650～750 DEG C, the time of described sintering is preferably more than 6 hours, more
It is preferably 8 hours.In the present invention, it is preferred to be sintered under the reducing conditions, it is furthermore preferred that described
The environment of sintering is for burn till or to burn till under the conditions of burying carbon in nitrogen.
The sliding plate brick obtained just base is carried out oil immersion, hoop-driving, grinding, veneer and coating, final
To sliding plate brick.
The present invention does not has special limit to the method for described oil immersion, hoop-driving, grinding, veneer and coating
System, the method that well known to a person skilled in the art oil immersion, hoop-driving, grinding, veneer and coating.
The sliding plate brick that the present invention provides is magnesia sliding plate brick, is a kind of with highly-purity magnesite as primary raw material, then
Add appropriate metallic aluminium, carbon black, additive and bonding agent, the high-grade basic refractory of composition, main
Steel tapping hole for steel making converter flow control to be used for and ladle flow control.It directly contacts with molten steel, and accepts molten steel
And the erosion of slag, wash away, and the thermal spalling repeatedly connecing the generation of falling molten steel in running, this
The sliding plate brick rapid heat cycle good stability of bright offer, will not ftracture during the most sliding.Anti-scour property
Good, do not react with the metallic element in special steel and the CaO in slag and accelerate sliding plate brick erosion rate.
The sliding plate brick refractoriness that the present invention provides is high, good thermal shock resistance, anti-strip, slag corrosion resistance
Performance is good, and potassium steel, high calcium steel, high-oxygen steel and steel alloy are had higher by the sliding plate brick that the present invention provides
Adaptability；Burn till compared with magnesia sliding plate brick with conventional high-temperature, prepare and raw material is added without magnesium aluminate spinel,
Need not high temperature burn till, the energy can be saved.
Result shows, apparent porosity ＜ 6.5% of the sliding plate brick that the present invention provides, bulk density is more than
2.99g/cm3, cold crushing strength is more than 95MPa, 1400 DEG C of high temperature break resistant intensity ＞ 16MPa, even burns
Stove number ＞ 2 times, reaming is little, slight sliding area plucking, slide plate roll off the production line after crack number≤6.
In order to be further appreciated by the present invention, the sliding plate brick present invention provided below in conjunction with embodiment and system thereof
Preparation Method illustrates, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
1, proportioning raw materials is:
High-purity fused magnesite of 81.3wt% (including: the particle diameter of 30wt% is 1～3mm and is not equal to
The magnesia particle of 1mm, the particle diameter of 34wt% are 0.074～1mm and are not equal to the magnesia particle of 0.074mm
And the magnesia powder of the particle diameter≤0.074mm of 17.3wt%)；
The metallic aluminium of 8.6Wt% (including: 7.6wt% particle diameter be≤metallic aluminium powder of 0.088mm and
1wt% metallic aluminium fiber)
The white carbon black of 2.9wt%；
The additive of 2.9Wt% (including: 1wt% boron carbide and 1.9wt% boron nitride)
The bonding agent of 4.3wt% (including: 3.3Wt% phenolic resin and the organic-silicon-modified resin of 1wt%
(western Shandong metallurgy Refractory Co., ltd, model TMS)).
2, preparation technology
The magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074mm is mixed, is mixed
Close powder.
Then, after the magnesia particle of particle diameter ＞ 0.074mm is added planetary type wheel mill, resin is added,
Mixed grind 2 minutes, adds above-mentioned mixed-powder, mixed grind 40 minutes, obtains compound.
After obtaining compound, compound use more than 400 tons electric screw press hit more than 12 times,
Form sliding plate brick just base.
Described sliding plate brick just base is carried out natural drying 24h at ambient temperature.Then, 220 DEG C of temperature
Lower baking 24 hours, obtains dry base substrate.
Described dry base substrate is sintered under the nitrogen protective condition of 680 DEG C 8h, then oil immersion, hoop-driving,
Grinding, veneer, coating, obtain sliding plate brick.
3, performance test
(1) apparent porosity: 4.5%
(2) bulk density: 3.14
(3) cold crushing strength: 105MPa
(4) 1400 DEG C of high temperature break resistant intensity: 19MPa
(5) stove number is even burnt: 3
(6) reaming: little
(7) sliding area plucking: slight
(8) crack number after slide plate rolls off the production line；4
Embodiment 2
1, proportioning raw materials is:
High-purity fused magnesite of 84.2wt% (including: the particle diameter of 30wt% is 1～3mm and is not equal to
The magnesia particle of 1mm, the particle diameter of 34wt% are 0.074～1mm and are not equal to the magnesia particle of 0.074mm
And the magnesia powder of the particle diameter≤0.074mm of 20.2wt%)；
The metallic aluminium of 7.7Wt% (including: 6.7wt% particle diameter be≤metallic aluminium powder of 0.088mm and
1wt% metallic aluminium fiber)
The white carbon black of 1.9wt%；
The additive boron carbide of 1.9wt%
The bonding agent of 4.3wt% (including: 3.3Wt% phenolic resin and the organic-silicon-modified resin of 1wt%
(western Shandong metallurgy Refractory Co., ltd, model TMS)).
2, preparation technology
The magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074mm is mixed, is mixed
Close powder.
Then, after the magnesia particle of particle diameter ＞ 0.074mm is added planetary type wheel mill, resin is added,
Mixed grind 2 minutes, adds above-mentioned mixed-powder, mixed grind 50 minutes, obtains compound.
After obtaining compound, compound use more than 400 tons electric screw press hit more than 12 times,
Form sliding plate brick just base.
Described sliding plate brick just base is carried out natural drying 24h at ambient temperature.Then, 220 DEG C of temperature
Lower baking 24 hours, obtains dry base substrate.
Described dry base substrate is sintered 8h, then oil immersion, hoop-driving, grinding under the conditions of carbon 750 DEG C bury
Processing, veneer, coating, obtain sliding plate brick.
3, performance test
(1) apparent porosity: 4.2%
(2) bulk density: 3.11
(3) cold crushing strength: 102MPa
(4) 1400 DEG C of high temperature break resistant intensity: 20MPa
(5) stove number is even burnt: 3
(6) reaming: little
(7) sliding area plucking: slight
(8) crack number after slide plate rolls off the production line；6
Embodiment 3
1, proportioning raw materials is:
High-purity fused magnesite of 86.1wt% (including: the particle diameter of 30Wt% is 1～3mm and is not equal to
The magnesia particle of 1mm, the particle diameter of 34wt% are 0.074～1mm and are not equal to the magnesia particle of 0.074mm
And the magnesia powder of the particle diameter≤0.074mm of 22.1wt%)；
The metallic aluminium of 6.7Wt% (including: 5.7wt% particle diameter be≤metallic aluminium powder of 0.088mm and
1wt% metallic aluminium fiber)；
The white carbon black of 1.9wt%；
The additive boron carbide of 1.0wt%；
The bonding agent of 4.3wt% (including: 3.3Wt% phenolic resin and the organic-silicon-modified resin of 1wt%
(western Shandong metallurgy Refractory Co., ltd, model TMS))；
2, preparation technology
The magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074mm is mixed, is mixed
Close powder.
Then, after the magnesia particle of particle diameter ＞ 0.074mm is added planetary type wheel mill, resin is added,
Mixed grind 2 minutes, adds above-mentioned mixed-powder, mixed grind 40 minutes, obtains compound.
After obtaining compound, compound use more than 400 tons electric screw press hit more than 12 times,
Form sliding plate brick just base.
Described sliding plate brick just base is carried out natural drying 24h at ambient temperature.Then, 220 DEG C of temperature
Lower baking 24 hours, obtains dry base substrate.
Described dry base substrate is sintered 8h, then oil immersion, hoop-driving, grinding under the conditions of carbon 800 DEG C bury
Processing, veneer, coating, obtain sliding plate brick.
3, performance test
(1) apparent porosity: 4.4%
(2) bulk density: 3.09
(3) cold crushing strength: 98MPa
(4) 1400 DEG C of high temperature break resistant intensity: 18MPa
(5) stove number is even burnt: 2
(6) reaming: little
(7) sliding area plucking: slight
(8) crack number after slide plate rolls off the production line；4
Embodiment 4
1, proportioning raw materials is:
High-purity fused magnesite of 86.1wt% (including: the particle diameter of 30Wt% is 1～3mm and is not equal to
The magnesia particle of 1mm, the particle diameter of 34wt% are 0.074～1mm and are not equal to the magnesia particle of 0.074mm
And the magnesia powder of the particle diameter≤0.074mm of 22.1wt%)；
The metallic aluminium of 6.7Wt% (including: 5.7wt% particle diameter be≤metallic aluminium powder of 0.088mm and
1wt% metallic aluminium fiber)；
The white carbon black of 1.9wt%；
The additive boron carbide of 1.0wt%
Bonding agent (phenolic resin and the organic-silicon-modified resin of 1wt% including 3.3Wt% of 4.3wt%
(western Shandong metallurgy Refractory Co., ltd, model TMS))；
2, preparation technology
The magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074mm is mixed, is mixed
Close powder.
Then, after the magnesia particle of particle diameter ＞ 0.074mm is added planetary type wheel mill, resin is added,
Mixed grind 2 minutes, adds above-mentioned mixed-powder, mixed grind 40 minutes, obtains compound.
After obtaining compound, compound use more than 400 tons electric screw press hit more than 12 times,
Form sliding plate brick just base.
Described sliding plate brick just base is carried out natural drying 24h at ambient temperature.Then, 220 DEG C of temperature
Lower baking 24 hours, obtains dry base substrate.
Described dry base substrate is sintered under the nitrogen protective condition of 750 DEG C 6h, then oil immersion, hoop-driving,
Grinding, veneer, coating, obtain sliding plate brick.
3, performance test
(1) apparent porosity: 4.4%
(2) bulk density: 3.00
(3) cold crushing strength: 108MPa
(4) 1400 DEG C of high temperature break resistant intensity: 18MPa
(5) stove number is even burnt: 2
(6) reaming: little
(7) sliding area plucking: slight
(8) crack number after slide plate rolls off the production line；6
Embodiment 5
1, proportioning raw materials is:
High-purity fused magnesite of 88.0wt% (including: the particle diameter of 30Wt% is 1～3mm and is not equal to
The magnesia particle of 1mm, the particle diameter of 34wt% are 0.074～1mm and are not equal to the magnesia particle of 0.074mm
And the magnesia powder of the particle diameter≤0.074mm of 24wt%)；
The metallic aluminium of 4.8Wt% (including: 3.8wt% particle diameter be≤metallic aluminium powder of 0.088mm and
1wt% metallic aluminium fiber)；
The white carbon black of 1.9wt%；
The additive boron carbide of 1.0wt%；
The bonding agent phenolic resin of 4.3wt%；
2, preparation technology
The magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074mm is mixed, is mixed
Close powder.
Then, after the magnesia particle of particle diameter ＞ 0.074mm is added planetary type wheel mill, resin is added,
Mixed grind 2 minutes, adds above-mentioned mixed-powder, mixed grind 40 minutes, obtains compound.
After obtaining compound, compound use more than 400 tons electric screw press hit more than 12 times,
Form sliding plate brick just base.
Described sliding plate brick just base is carried out natural drying 24h at ambient temperature.Then, 220 DEG C of temperature
Lower baking 24 hours, obtains dry base substrate.
Described dry base substrate is sintered under the confined space of 750 DEG C 8h, then oil immersion, hoop-driving, grinding
Processing, veneer, coating, obtain sliding plate brick.
3, performance test
(1) apparent porosity: 4.5%
(2) bulk density: 2.99
(3) cold crushing strength: 95MPa
(4) 1400 DEG C of high temperature break resistant intensity: 16MPa
(5) stove number 2 is even burnt
(6) reaming: little
(7) sliding area plucking: slight
(8) crack number after slide plate rolls off the production line；6
The above is only the preferred embodiment of the present invention, it is noted that general for the art
For logical technical staff, under the premise without departing from the principles of the invention, it is also possible to make some improvement and profit
Decorations, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a sliding plate brick, it is characterised in that be prepared from by the composition of following mass percent:
The magnesia of 80wt%～89.9wt%；
The metallic aluminium of 5wt%～10wt%；
The white carbon black of 1wt%～3wt%；
The additive of 1wt%～3wt%；
The resin of 3wt%～5wt%.
Sliding plate brick the most according to claim 1, it is characterised in that described magnesia is selected from fused magnesite.
Sliding plate brick the most according to claim 1, it is characterised in that described magnesia includes:
The particle diameter of 25wt%～35wt% is 1～3mm and is not equal to the magnesia particle of 1mm；
The particle diameter of 30wt%～35wt% is 0.074～1mm and is not equal to the magnesia particle of 0.074mm；
The magnesia powder of the particle diameter≤0.074mm of 15wt%～25wt%.
Sliding plate brick the most according to claim 1, it is characterised in that described metallic aluminium is for being smaller in size than
The metallic aluminium granule of 0.088mm or metallic aluminium fiber.
Sliding plate brick the most according to claim 1, it is characterised in that described additive is selected from boron carbide
With one or both in boron nitride.
Sliding plate brick the most according to claim 1, it is characterised in that described resin is selected from liquid thermosetting
One or more in property phenolic resin or organic-silicon-modified resin.
7. the preparation method of the sliding plate brick as described in claim 1～6 any one, it is characterised in that
Comprise the following steps:
By metallic aluminium, additive, white carbon black, magnesia and mixed with resin, obtain compound；
Described compound is shaped successively, is dried, toasts and sinters, obtains sliding plate brick precursor；
Described sliding plate brick precursor is carried out oil immersion, hoop-driving, grinding, veneer and coating successively, obtains
Sliding plate brick.
Preparation method the most according to claim 7, it is characterised in that comprise the following steps:
A) magnesia powder of metallic aluminium, additive, white carbon black and particle diameter≤0.074mm is mixed, obtain
Mixed-powder；
B) by after the magnesia particle of particle diameter ＞ 0.074mm and resin mixed grind, add described mixed-powder and enter
Row mixed grind, obtains compound；
C) described compound is shaped successively, is dried, toasts and sinters, obtain sliding plate brick precursor；
D) described sliding plate brick precursor is carried out oil immersion, hoop-driving, grinding, veneer and coating successively,
To sliding plate brick.
9. according to the preparation method described in claim 7 or 8, it is characterised in that the temperature of described baking
Being 200～220 DEG C, the time of described baking is not less than 24h.
10. according to the preparation method described in claim 7 or 8, it is characterised in that the temperature of described sintering
Degree is 600～800 DEG C, and the time of described sintering is more than 6 hours.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108585797A (en) * | 2018-05-15 | 2018-09-28 | 马鞍山利尔开元新材料有限公司 | A kind of magnesia pushing off the slag sliding plate brick of self-lubricating and preparation method thereof of addition boron nitride |
| CN112624774A (en) * | 2020-12-21 | 2021-04-09 | 马鞍山利尔开元新材料有限公司 | Metal ceramic converter slag stopping slide plate brick material and preparation method thereof |
| CN114932213A (en) * | 2022-06-23 | 2022-08-23 | 河南工业大学 | MgO-Al-C sliding plate brick with high thermal shock and preparation method thereof |
| CN115340362A (en) * | 2022-08-30 | 2022-11-15 | 宜兴市耐火材料有限公司 | Alumina fiber reinforced magnesia carbon sliding plate and preparation process thereof |
| CN116947459A (en) * | 2023-09-20 | 2023-10-27 | 河北国亮新材料股份有限公司 | Tundish impact plate for resisting molten steel scouring and preparation method thereof |
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| CN103588494A (en) * | 2013-11-29 | 2014-02-19 | 湖南湘钢瑞泰科技有限公司 | Sliding brick and preparation method thereof |
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| CN1562869A (en) * | 2004-04-15 | 2005-01-12 | 河南省伯马股份有限公司 | Formula of magnesian sliding plate bricks and fabricating technique |
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| CN108585797A (en) * | 2018-05-15 | 2018-09-28 | 马鞍山利尔开元新材料有限公司 | A kind of magnesia pushing off the slag sliding plate brick of self-lubricating and preparation method thereof of addition boron nitride |
| CN112624774A (en) * | 2020-12-21 | 2021-04-09 | 马鞍山利尔开元新材料有限公司 | Metal ceramic converter slag stopping slide plate brick material and preparation method thereof |
| CN112624774B (en) * | 2020-12-21 | 2022-12-13 | 马鞍山利尔开元新材料有限公司 | Metal ceramic converter slag stopping slide plate brick material and preparation method thereof |
| CN114932213A (en) * | 2022-06-23 | 2022-08-23 | 河南工业大学 | MgO-Al-C sliding plate brick with high thermal shock and preparation method thereof |
| CN115340362A (en) * | 2022-08-30 | 2022-11-15 | 宜兴市耐火材料有限公司 | Alumina fiber reinforced magnesia carbon sliding plate and preparation process thereof |
| CN116947459A (en) * | 2023-09-20 | 2023-10-27 | 河北国亮新材料股份有限公司 | Tundish impact plate for resisting molten steel scouring and preparation method thereof |
| CN116947459B (en) * | 2023-09-20 | 2023-12-15 | 河北国亮新材料股份有限公司 | Tundish impact plate for resisting molten steel scouring and preparation method thereof |
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| CN105967702B (en) | 2019-05-17 |
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