CN105967702B - A kind of sliding plate brick and preparation method thereof - Google Patents
A kind of sliding plate brick and preparation method thereof Download PDFInfo
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- CN105967702B CN105967702B CN201610298729.0A CN201610298729A CN105967702B CN 105967702 B CN105967702 B CN 105967702B CN 201610298729 A CN201610298729 A CN 201610298729A CN 105967702 B CN105967702 B CN 105967702B
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- 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 present invention provides a kind of sliding plate bricks, are prepared by the ingredient of following mass percent: the magnesia of 80wt%~89.9wt%；The metallic aluminium of 5wt%~10wt%；The carbon black of 1wt%~3wt%；The additive of 1wt%~3wt%；The resin of 3wt%~5wt%.Sliding plate brick refractoriness provided by the invention is high, and good thermal shock resistance, anti-strip, anti-scour property is good, and sliding plate brick provided by the invention has stronger adaptability to potassium steel, high calcium steel, high-oxygen steel and steel alloy；Compared with conventional high-temperature is burnt into magnesia sliding plate brick, prepares and be added without magnesium aluminate spinel in raw material, do not need high temperature firing, it can be energy saving.
Description
Technical field
The invention belongs to technical field of refractory materials, and in particular to a kind of sliding plate brick and preparation method thereof.
Background technique
Sliding plate brick is the important refractory material of one of process for making process, is mainly used in converter, ladle and centre
Packet flow control.The sliding plate brick that current each steel mill uses mainly has aluminium carbonaceous, aluminium zirconium carbonaceous and magnesia slide plate.In casting potassium steel, height
It when calcium steel, high-oxygen steel, is contacted in aluminium carbonaceous and aluminium zirconium carbonaceous slide plate working face and molten steel, in the oxygen and steel slag in meeting molten steel
CaO, MnO are chemically reacted, and sliding plate brick working lining structure is made to become loose, cause sliding plate brick it is structural peel off, reaming is big, folder
Steel, and then the access times of sliding plate brick are influenced, or even threaten steel-making safety in production operation.Therefore, magnesia sliding plate brick application more
Add extensively, and traditional magnesia sliding plate brick thermal shock resistance is poor (crackle is more after slide plate is offline, 4 or more), easily peels off, major part is only
Using primary.
For highly aggressive steel grade, such as potassium steel, high calcium steel, high-oxygen steel, technical staff is researching and developing always suitable material
The sliding plate brick of matter meets steel grade requirement.Application No. is 201110157006.6 magnalium carbonaceous sliding plate bricks by using addition
10-30 parts of magnesium aluminate spinel can be improved the thermal shock resistance and anti-scour property of slide plate, but compare magnesia, spinelle
Cost of material is high；It needs to be burnt under the conditions of 1550-1680 DEG C application No. is the magnesia sliding plate brick of 200410010211.X, be burnt into
It is costly and not energy-efficient.Therefore, it prepares that a kind of thermal shock resistance is good, firing temperature is low and sliding plate brick at low cost becomes industry
The needs of development.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is that provide a kind of sliding plate brick and preparation method thereof, the present invention
The sliding plate brick thermal shock resistance of offer is good, firing temperature is low and at low cost.
The present invention provides a kind of sliding plate bricks, are prepared by the ingredient of following mass percent:
The magnesia of 80wt%~89.9wt%；
The metallic aluminium of 5wt%~10wt%；
The carbon black of 1wt%~3wt%；
The additive of 1wt%~3wt%；
The resin of 3wt%~5wt%.
Preferably, the magnesia is selected from fused magnesite.
Preferably, the magnesia includes:
The partial size of 25wt%~35wt% is 1~3mm and is not equal to the magnesia particle of 1mm；
The partial size of 30wt%~35wt% is 0.074~1mm and is not equal to the magnesia particle of 0.074mm；
Partial size≤0.074mm magnesia powder of 15wt%~25wt%.
Preferably, the metallic aluminium is the metal alumina particles or metal aluminum fiber that size is less than 0.088mm.
Preferably, the additive is selected from one or both of boron carbide and boron nitride.
Preferably, the resin is selected from one of liquid thermosetting phenolic resin or organic-silicon-modified resin or a variety of.
The present invention also provides a kind of preparation methods of above-mentioned sliding plate brick, comprising the following steps:
Metallic aluminium, additive, carbon black, magnesia and resin are mixed, mixture is obtained；
The mixture is successively formed, is dried, toasted and is sintered, sliding plate brick precursor is obtained；
The sliding plate brick precursor is successively subjected to oil immersion, hoop-driving, grinding, veneer and coating, obtains sliding plate brick.
Preferably, comprising the following steps:
A) metallic aluminium, additive, carbon black and partial size≤0.074mm magnesia powder are mixed, obtain mixed-powder；
B it) by after the magnesia particle of partial size > 0.074mm and resin mixed grind, adds the mixed-powder and carries out mixed grind, obtain
To mixture；
C) mixture is successively formed, is dried, toasted and is sintered, obtains sliding plate brick precursor；
D the sliding plate brick precursor successively) is subjected to oil immersion, hoop-driving, grinding, veneer and coating, obtains sliding plate brick.
Preferably, the temperature of the baking is 200~220 DEG C, and the time of the baking is not less than for 24 hours.
Preferably, the temperature of the sintering is 600~800 DEG C, and the time of the sintering is 6 hours or more.
Compared with prior art, the present invention provides a kind of sliding plate bricks, are prepared by the ingredient of following mass percent:
The magnesia of 85wt%~92wt%；The metallic aluminium of 5wt%~10wt%；The carbon black of 1wt%~3wt%；1wt%~3wt%'s
Additive；The resin of 3wt%~5wt%.Sliding plate brick refractoriness provided by the invention is high, good thermal shock resistance, anti-strip,
Anti-scour property is good, and sliding plate brick provided by the invention has stronger adaptation to potassium steel, high calcium steel, high-oxygen steel and steel alloy
Property；Compared with conventional high-temperature is burnt into magnesia sliding plate brick, prepares and be added without magnesium aluminate spinel in raw material, do not need high temperature firing, it can
With energy saving.
The result shows that the apparent porosity < 6.5% of sliding plate brick provided by the invention, bulk density is greater than 2.99g/cm3, often
Warm compressive resistance is greater than 95MPa, 1400 DEG C of high temperature break resistant intensity > 16MPa, even burns furnace number > 2 times, reaming is small, slight sliding area
Plucking, crack number≤6 after slide plate is offline.
Specific embodiment
The present invention provides a kind of sliding plate bricks, are prepared by the ingredient of following mass percent:
The magnesia of 80wt%~89.9wt%；
The metallic aluminium of 5wt%~10wt%；
The carbon black of 1wt%~3wt%；
The additive of 1wt%~3wt%；
The resin of 3wt%~5wt%.
The raw material provided by the invention for preparing sliding plate brick includes magnesia, and in the present invention, the magnesia selects highly-purity magnesite,
The magnesia preferably uses fused magnesite.Wherein, when carrying out the preparation of sliding plate brick, the magnesia is preferably by the magnesium of different-grain diameter
Sand is mixed.It is furthermore preferred that the magnesia includes:
The partial size of 25wt%~35wt% is 1~3mm and is not equal to the magnesia particle of 1mm；
The partial size of 30wt%~35wt% is 0.074~1mm and is not equal to the magnesia particle of 0.074mm；
Partial size≤0.074mm magnesia powder of 15wt%~25wt%.
In the present invention, the additive amount of the magnesia be 80wt%~89.9wt%, preferably 81wt%~88wt%, more
Preferably 83wt%~86wt%.
In the present invention, the raw material for preparing sliding plate brick further includes metallic aluminium, and the metallic aluminium is preferably that size is less than
The metal alumina particles or metal aluminum fiber of 0.088mm.The additive amount of the metallic aluminium is preferably 5wt%~10wt%, more preferably
For 6wt%~9wt%
The raw material that the present invention prepares sliding plate brick further includes carbon black, and the partial size of the carbon black is preferably less than 0.074mm.It is described
The additive amount of carbon black is preferably 1wt%~3wt%, more preferably 1.5wt%~2.5wt%.
Sliding plate brick prepared by the present invention further includes additive, the additive preferably change one of boron and boron nitride or
Two kinds.The additive amount of the additive is preferably 1wt%~3wt%, more preferably 1.5wt%~2.5wt%.
Sliding plate brick prepared by the present invention further includes resin, and the resin is selected from liquid thermosetting phenolic resin or organosilicon changes
One of property resin is a variety of.The additive amount of the resin is preferably 3wt%~5wt%, and more preferably 3.5wt%~
4.5wt%.
The present invention to the sources of above-mentioned raw materials there is no specifically limited, it is general commercially available.
The present invention also provides a kind of preparation methods of above-mentioned sliding plate brick, comprising the following steps:
Metallic aluminium, additive, carbon black, magnesia and resin are mixed, mixture is obtained；
The mixture is successively formed, is dried, toasted and is sintered, sliding plate brick precursor is obtained；
The sliding plate brick precursor is successively subjected to oil immersion, hoop-driving, grinding, veneer and coating, obtains sliding plate brick.
Preferably, the sliding plate brick is prepared as follows:
A) metallic aluminium, additive, carbon black and the magnesia powder of partial size≤0.074 are mixed, obtain mixed-powder；
B it) by after the magnesia particle of partial size > 0.074mm and resin mixed grind, adds the mixed-powder and carries out mixed grind, obtain
To mixture；
C) mixture is successively formed, is dried, toasted and is sintered, obtains sliding plate brick precursor；
D the sliding plate brick precursor successively) is subjected to oil immersion, hoop-driving, grinding, veneer and coating, obtains sliding plate brick.
The present invention first mixes metallic aluminium, additive, carbon black and the magnesia powder of partial size≤0.074, is mixed
Powder.For the present invention to the mixed method there is no specifically limited, well known to a person skilled in the art can be by above-mentioned raw materials
The uniformly mixed method of powder.
After obtaining mixed-powder, the present invention adds after the magnesia particle of partial size > 0.074mm and resin mixed grind described
Mixed-powder carries out mixed grind, obtains mixture.
In the present invention, equipment used in the mixed grind to raw material in the mixture preparation process is there is no specifically limited,
It is preferred that using planetary type wheel mill.
Specifically, resin is added after planetary type wheel mill is added in the magnesia particle of partial size > 0.074mm, mixed grind 2 is divided
Clock adds above-mentioned mixed-powder, mixed grind 30~60 minutes, obtains mixture.
After obtaining mixture, the mixture is successively formed, is dried, toasted and is sintered, before obtaining sliding plate brick
Body.
There is no specifically limited to the molding method of the mixture by the present invention, it is preferred to use electric screw press carries out
Machine breaks into type.It is specific:
Hit 12 times using 400 tons or more electric screw press or more, form sliding plate brick just base.
Then, base at the beginning of sliding plate brick is dried, toasted and is sintered.
In the present invention, the drying preferably spontaneously dries, i.e., is placed, spontaneously dried at room temperature
Time preferably for 24 hours.
After natural drying, base at the beginning of the sliding plate brick is toasted, the temperature of the baking is preferably 200~220
DEG C, the time of the baking is preferably not less than for 24 hours.
It after baking, is sintered, obtains sliding plate brick precursor.Wherein, the temperature of the sintering is preferably 600~800
DEG C, more preferably 650~750 DEG C, the time of the sintering is preferably 6 hours or more, and more preferably 8 hours.In the present invention,
It is preferred that being sintered under the reducing conditions, it is furthermore preferred that the environment of the sintering is to be burnt into nitrogen or under the conditions of burying carbon
Firing.
Base at the beginning of obtained sliding plate brick is subjected to oil immersion, hoop-driving, grinding, veneer and coating, finally obtains sliding plate brick.
There is no specifically limited, this fields for method of the present invention to the oil immersion, hoop-driving, grinding, veneer and coating
Oil immersion, hoop-driving well known to technical staff, grinding, veneer and coating method.
Sliding plate brick provided by the invention is magnesia sliding plate brick, is one kind using highly-purity magnesite as primary raw material, adds appropriate
Metallic aluminium, carbon black, additive and bonding agent, the high-grade basic refractory of composition is mainly used for steel tapping hole for steel making converter control
Stream and ladle flow control.It is directly contacted with molten steel, and receive the erosion of molten steel and steel slag, wash away and operational process in
The thermal spalling for the generation of falling molten steel is connect repeatedly, and sliding plate brick rapid heat cycle stability provided by the invention is good, will not during even sliding
Cracking.Anti-scour property is good, does not react with the CaO in the metallic element and slag in special steel and accelerates sliding plate brick and corrode speed
Rate.
Sliding plate brick refractoriness provided by the invention is high, and good thermal shock resistance, anti-strip, anti-scour property is good, this
The sliding plate brick that invention provides has stronger adaptability to potassium steel, high calcium steel, high-oxygen steel and steel alloy；Magnesium is burnt into conventional high-temperature
Matter sliding plate brick is compared, and is prepared and is added without magnesium aluminate spinel in raw material, and high temperature firing is not needed, can be energy saving.
The result shows that the apparent porosity < 6.5% of sliding plate brick provided by the invention, bulk density is greater than 2.99g/cm3, often
Warm compressive resistance is greater than 95MPa, 1400 DEG C of high temperature break resistant intensity > 16MPa, even burns furnace number > 2 times, reaming is small, slight sliding area
Plucking, crack number≤6 after slide plate is offline.
For a further understanding of the present invention, below with reference to embodiment to sliding plate brick provided by the invention and preparation method thereof into
Row explanation, protection scope of the present invention are not limited by the following examples.
Embodiment 1
1, raw material proportioning are as follows:
High-purity fused magnesite of 81.3wt% (is 1~3mm including: the partial size of 30wt% and is not equal to the magnesia of 1mm
Particle, 34wt% partial size be 0.074~1mm and not equal to 0.074mm magnesia particle and 17.3wt% partial size≤
The magnesia powder of 0.074mm)；
The metallic aluminium of 8.6Wt% (is≤metallic aluminium powder and 1wt% metal of 0.088mm including: 7.6wt% partial size
Aluminum fiber)
The 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% is (including 3.3Wt% phenolic resin and 1wt% organic-silicon-modified resin (western Shandong smelting
Golden Refractory Co., ltd, model TMS)).
2, preparation process
Metallic aluminium, additive, carbon black and partial size≤0.074mm magnesia powder are mixed, mixed-powder is obtained.
Then, after planetary type wheel mill being added in the magnesia particle of partial size > 0.074mm, addition resin, mixed grind 2 minutes,
Above-mentioned mixed-powder is added, mixed grind 40 minutes, obtains mixture.
After obtaining mixture, mixture is hit 12 times using 400 tons or more electric screw press or more, form slide plate
The first base of brick.
Base at the beginning of the sliding plate brick is spontaneously dried for 24 hours at room temperature.Then, 24 are toasted at a temperature of 220 DEG C
Hour, obtain dry base substrate.
The dry base substrate is sintered 8h under the conditions of 680 DEG C of nitrogen protection, then oil immersion, hoop-driving, grinding, patch
Face, 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 intensities: 19MPa
(5) connect and burn furnace number: 3
(6) reaming: small
(7) sliding area plucking: slight
(8) crack number after slide plate is offline；4
Embodiment 2
1, raw material proportioning are as follows:
High-purity fused magnesite of 84.2wt% (is 1~3mm including: the partial size of 30wt% and is not equal to the magnesia of 1mm
Particle, 34wt% partial size be 0.074~1mm and not equal to 0.074mm magnesia particle and 20.2wt% partial size≤
The magnesia powder of 0.074mm)；
The metallic aluminium of 7.7Wt% (is≤metallic aluminium powder and 1wt% metal of 0.088mm including: 6.7wt% partial size
Aluminum fiber)
The carbon black of 1.9wt%；
The additive boron carbide of 1.9wt%
The bonding agent of 4.3wt% is (including 3.3Wt% phenolic resin and 1wt% organic-silicon-modified resin (western Shandong smelting
Golden Refractory Co., ltd, model TMS)).
2, preparation process
Metallic aluminium, additive, carbon black and partial size≤0.074mm magnesia powder are mixed, mixed-powder is obtained.
Then, after planetary type wheel mill being added in the magnesia particle of partial size > 0.074mm, addition resin, mixed grind 2 minutes,
Above-mentioned mixed-powder is added, mixed grind 50 minutes, obtains mixture.
After obtaining mixture, mixture is hit 12 times using 400 tons or more electric screw press or more, form slide plate
The first base of brick.
Base at the beginning of the sliding plate brick is spontaneously dried for 24 hours at room temperature.Then, 24 are toasted at a temperature of 220 DEG C
Hour, obtain dry base substrate.
The dry base substrate is sintered 8h at 750 DEG C under the conditions of burying carbon, then oil immersion, hoop-driving, grinding, veneer,
Coating obtains 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 intensities: 20MPa
(5) connect and burn furnace number: 3
(6) reaming: small
(7) sliding area plucking: slight
(8) crack number after slide plate is offline；6
Embodiment 3
1, raw material proportioning are as follows:
High-purity fused magnesite of 86.1wt% (is 1~3mm including: the partial size of 30Wt% and is not equal to the magnesia of 1mm
Particle, 34wt% partial size be 0.074~1mm and not equal to 0.074mm magnesia particle and 22.1wt% partial size≤
The magnesia powder of 0.074mm)；
The metallic aluminium of 6.7Wt% (is≤metallic aluminium powder and 1wt% metal of 0.088mm including: 5.7wt% partial size
Aluminum fiber)；
The carbon black of 1.9wt%；
The additive boron carbide of 1.0wt%；
The bonding agent of 4.3wt% is (including 3.3Wt% phenolic resin and 1wt% organic-silicon-modified resin (western Shandong smelting
Golden Refractory Co., ltd, model TMS))；
2, preparation process
Metallic aluminium, additive, carbon black and partial size≤0.074mm magnesia powder are mixed, mixed-powder is obtained.
Then, after planetary type wheel mill being added in the magnesia particle of partial size > 0.074mm, addition resin, mixed grind 2 minutes,
Above-mentioned mixed-powder is added, mixed grind 40 minutes, obtains mixture.
After obtaining mixture, mixture is hit 12 times using 400 tons or more electric screw press or more, form slide plate
The first base of brick.
Base at the beginning of the sliding plate brick is spontaneously dried for 24 hours at room temperature.Then, 24 are toasted at a temperature of 220 DEG C
Hour, obtain dry base substrate.
The dry base substrate is sintered 8h at 800 DEG C under the conditions of burying carbon, then oil immersion, hoop-driving, grinding, veneer,
Coating obtains 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 intensities: 18MPa
(5) connect and burn furnace number: 2
(6) reaming: small
(7) sliding area plucking: slight
(8) crack number after slide plate is offline；4
Embodiment 4
1, raw material proportioning are as follows:
High-purity fused magnesite of 86.1wt% (is 1~3mm including: the partial size of 30Wt% and is not equal to the magnesia of 1mm
Particle, 34wt% partial size be 0.074~1mm and not equal to 0.074mm magnesia particle and 22.1wt% partial size≤
The magnesia powder of 0.074mm)；
The metallic aluminium of 6.7Wt% (is≤metallic aluminium powder and 1wt% metal of 0.088mm including: 5.7wt% partial size
Aluminum fiber)；
The carbon black of 1.9wt%；
The additive boron carbide of 1.0wt%
Bonding agent (phenolic resin and 1wt% organic-silicon-modified resin (the western Shandong smelting including 3.3Wt% of 4.3wt%
Golden Refractory Co., ltd, model TMS))；
2, preparation process
Metallic aluminium, additive, carbon black and partial size≤0.074mm magnesia powder are mixed, mixed-powder is obtained.
Then, after planetary type wheel mill being added in the magnesia particle of partial size > 0.074mm, addition resin, mixed grind 2 minutes,
Above-mentioned mixed-powder is added, mixed grind 40 minutes, obtains mixture.
After obtaining mixture, mixture is hit 12 times using 400 tons or more electric screw press or more, form slide plate
The first base of brick.
Base at the beginning of the sliding plate brick is spontaneously dried for 24 hours at room temperature.Then, 24 are toasted at a temperature of 220 DEG C
Hour, obtain dry base substrate.
The dry base substrate is sintered 6h under the conditions of 750 DEG C of nitrogen protection, then oil immersion, hoop-driving, grinding, patch
Face, 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 intensities: 18MPa
(5) connect and burn furnace number: 2
(6) reaming: small
(7) sliding area plucking: slight
(8) crack number after slide plate is offline；6
Embodiment 5
1, raw material proportioning are as follows:
High-purity fused magnesite of 88.0wt% (is 1~3mm including: the partial size of 30Wt% and is not equal to the magnesia of 1mm
Particle, 34wt% partial size be 0.074~1mm and not equal to 0.074mm magnesia particle and 24wt% partial size≤
The magnesia powder of 0.074mm)；
The metallic aluminium of 4.8Wt% (is≤metallic aluminium powder and 1wt% metal of 0.088mm including: 3.8wt% partial size
Aluminum fiber)；
The carbon black of 1.9wt%；
The additive boron carbide of 1.0wt%；
The bonding agent phenolic resin of 4.3wt%；
2, preparation process
Metallic aluminium, additive, carbon black and partial size≤0.074mm magnesia powder are mixed, mixed-powder is obtained.
Then, after planetary type wheel mill being added in the magnesia particle of partial size > 0.074mm, addition resin, mixed grind 2 minutes,
Above-mentioned mixed-powder is added, mixed grind 40 minutes, obtains mixture.
After obtaining mixture, mixture is hit 12 times using 400 tons or more electric screw press or more, form slide plate
The first base of brick.
Base at the beginning of the sliding plate brick is spontaneously dried for 24 hours at room temperature.Then, 24 are toasted at a temperature of 220 DEG C
Hour, obtain dry base substrate.
The dry base substrate is sintered 8h under 750 DEG C of confined space, then oil immersion, hoop-driving, grinding, veneer,
Coating obtains 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 intensities: 16MPa
(5) furnace number 2 is even burnt
(6) reaming: small
(7) sliding area plucking: slight
(8) crack number after slide plate is offline；6
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of sliding plate brick, which is characterized in that be prepared by the ingredient of following mass percent:
The magnesia of 80wt%~89.9wt%, the magnesia include: that the partial size of 25wt%~35wt% is 1~3mm and is not equal to
The magnesia particle of 1mm；The partial size of 30wt%~35wt% is 0.074~1mm and is not equal to the magnesia particle of 0.074mm；
Partial size≤0.074mm magnesia powder of 15wt%~25wt%；
The metallic aluminium of 5wt%~10wt%；
The carbon black of 1wt%~3wt%；
The additive of 1wt%~3wt%, the additive are selected from boron carbide and boron nitride；
The resin of 3wt%~5wt%, the resin are selected from liquid thermosetting phenolic resin and organic-silicon-modified resin.
2. sliding plate brick according to claim 1, which is characterized in that the magnesia is selected from fused magnesite.
3. sliding plate brick according to claim 1, which is characterized in that the metallic aluminium is the metal that size is less than 0.088mm
Alumina particles or metal aluminum fiber.
4. a kind of preparation method of the sliding plate brick as described in claims 1 to 3 any one, which is characterized in that including following step
It is rapid:
Metallic aluminium, additive, carbon black, magnesia and resin are mixed, mixture is obtained；
The mixture is successively formed, is dried, toasted and is sintered, sliding plate brick precursor is obtained；
The sliding plate brick precursor is successively subjected to oil immersion, hoop-driving, grinding, veneer and coating, obtains sliding plate brick.
5. the preparation method according to claim 4, which comprises the following steps:
A) metallic aluminium, additive, carbon black and partial size≤0.074mm magnesia powder are mixed, obtain mixed-powder；
B it) by after the magnesia particle of partial size > 0.074mm and resin mixed grind, adds the mixed-powder and carries out mixed grind, mixed
Close material；
C) mixture is successively formed, is dried, toasted and is sintered, obtains sliding plate brick precursor；
D the sliding plate brick precursor successively) is subjected to oil immersion, hoop-driving, grinding, veneer and coating, obtains sliding plate brick.
6. preparation method according to claim 4 or 5, which is characterized in that the temperature of the baking is 200~220 DEG C, institute
The time for stating baking is not less than for 24 hours.
7. preparation method according to claim 4 or 5, which is characterized in that the temperature of the sintering is 600~800 DEG C, institute
The time for stating sintering is 6 hours or more.
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| CN108585797B (en) * | 2018-05-15 | 2021-09-14 | 马鞍山利尔开元新材料有限公司 | Self-lubricating magnesium slag-stopping sliding plate brick added with boron nitride 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 |
| 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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|---|---|---|---|---|
| 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 |
| CN102249718A (en) * | 2011-06-10 | 2011-11-23 | 鞍山浦项特种耐火材料有限公司 | Aluminum magnesium carbon sliding plate brick for stopping slag at steel tapping hole of converter |
| 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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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102249718A (en) * | 2011-06-10 | 2011-11-23 | 鞍山浦项特种耐火材料有限公司 | Aluminum magnesium carbon sliding plate brick for stopping slag at steel tapping hole of converter |
| 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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