CN105924187B - A kind of two-layer compound side seal board and preparation method thereof - Google Patents

A kind of two-layer compound side seal board and preparation method thereof Download PDF

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Publication number
CN105924187B
CN105924187B CN201610263796.9A CN201610263796A CN105924187B CN 105924187 B CN105924187 B CN 105924187B CN 201610263796 A CN201610263796 A CN 201610263796A CN 105924187 B CN105924187 B CN 105924187B
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side seal
layer compound
raw material
compound side
seal board
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CN105924187A (en
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祝洪喜
彭玮珂
邓承继
余超
员文杰
丁军
朱清友
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Wuhan University of Science and Engineering WUSE
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Wuhan University of Science and Engineering WUSE
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • C—CHEMISTRY; METALLURGY
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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
    • C04B35/14—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 silica
    • C—CHEMISTRY; METALLURGY
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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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
    • C04B35/185—Mullite 3Al2O3-2SiO2
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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
    • C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/482—Refractories from grain sized mixtures
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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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • 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
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • 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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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/612—Machining

Abstract

The present invention relates to a kind of two-layer compound side seal boards and preparation method thereof.Its technical solution is：With the aluminium silicon of 45 ~ 70wt%/zirconium matter refractory raw material particle, the SiO of aluminium silicon/zirconium matter refractory raw material fine powder and 1 ~ 5wt% of 29 ~ 50wt%2Micro mist is raw material I, and the bonding agent of additional I 3.5 ~ 7wt% of raw material is kneaded, obtains half-dried pug I.Again with the vitreous silica particle of 45 ~ 70wt%, the vitreous silica fine powder of 29 ~ 50wt% and the SiO of 1 ~ 5wt%2Micro mist is raw material II, and the bonding agent of additional II 3.5 ~ 7wt% of raw material is kneaded, obtains half-dried pug II.Half-dried pug I and half-dried pug II are first placed in mold, two-layer compound side seal slab is compressed to, is dried, 3 ~ 5 hours are kept the temperature under the conditions of 1400 ~ 1500 DEG C, is machined, two-layer compound side seal board is made.High temperature resistant of the present invention, thermal shock resistance is good and high temperature resistance molten steel is good, and prepared two-layer compound side seal board and the cooperation of water cooling crystallization roll be tight, not bleed-out and wear-resistant, and using effect is better than single layer side seal board.

Description

A kind of two-layer compound side seal board and preparation method thereof
Technical field
The invention belongs to side seal board technical fields.More particularly to a kind of two-layer compound side seal board and preparation method thereof.
Background technology
Twin-roll Thin Strip Continuous Casting technology is that liquid metal is directly poured into the water cooling crystallization roll and side that two reversely rotate In the molten bath that sealing plate (refractory material) is constituted, by being quickly cooled down of water cooling crystallization roll (cooling rate 10-1000 DEG C/s it Between) and rolling effect obtain 1-5mm thickness strip.Compared with traditional sheet slab continuous casting and thin slab casting, double roller is thin Band continuous casting technology can be greatly lowered capital construction and equipment investment, energy consumption except through simplified process and reduce environmental pollution Except, unique Sub realizable fuzzy matrix process can make cast material that significant changes occur in microstructure, as crystal grain obtains Refinement, the precipitation etc. for reducing component segregation, inhibiting the second phase, can substantially improve the performance of metal material.Therefore, twin-roll thin strip connects Casting technology has become the hot spot of world today's new material and near-net forming research, and achieves huge progress.In recent years, China Units concerned also increase the R＆D intensity of the technology, enter pilot scale and small-scale trial production stage from laboratory research.
Side seal board is the key that the indispensable fire retarding component of Twin-roll Thin Strip Continuous Casting technology, it is desirable that its high temperature resistant, anti-thermal shock Performance is good, and the cooperation of water cooling crystallization roll is tight, not bleed-out, wear-resistant, and the aggressivity of high temperature resistance molten steel is good.But relative to smelting For the Twin-roll Thin Strip Continuous Casting technology of golden collar domain new development, there are no the keys such as matched side seal board in terms of refractory material Fire retarding component researches and develops the practical need that the quality refractory side seal board needed for Twin-roll Thin Strip Continuous Casting technology is New Metallurgical Technique development It asks.
Invention content
Present invention address that the requirement of Twin-roll Thin Strip Continuous Casting technology, it is therefore an objective to provide a kind of high temperature resistant, heat resistanceheat resistant The preparation method for the two-layer compound side seal board that shock stability is good and high temperature resistance molten steel is good, prepared two-layer compound side seal board With the cooperation of water cooling crystallization roll is tight, not bleed-out and wear-resistant, using effect is better than single layer side seal board.
For the above-mentioned task of realization, the technical solution adopted by the present invention is：
With the aluminium silicon of 45~70wt%/zirconium matter refractory raw material particle, aluminium silicon/zirconium matter refractory raw material fine powder of 29~50wt% With the SiO of 1~5wt%2Micro mist be raw material I, the bonding agent of the additional I 3.5~7wt% of raw material, then by the raw material I and knot Mixture is added in batch mixer and is kneaded, and obtains half-dried pug I.
With the vitreous silica particle, the vitreous silica fine powder of 29~50wt% and the SiO of 1~5wt% of 45~70wt%2It is micro- Powder is raw material II, the bonding agent of the additional II 3.5~7wt% of raw material, then batch mixer is added in the raw material II and bonding agent Middle kneading obtains half-dried pug II.
The half-dried pug I is put into the bottom of mold, then the half-dried pug II is placed on half-dried pug I, is put into The thickness of the half-dried pug I of mold bottom is the 25~30% of mould inner wall height, is put into the thickness of the half-dried pug II in mold Degree is the 65~75% of mould inner wall height；Then it is compressed to two-layer compound side seal slab, by the two-layer compound side seal slab It is dried under the conditions of 110~140 DEG C, 3~5 hours is kept the temperature under the conditions of 1400~1500 DEG C, two-layer compound side seal board burning is made Tie base.
Finally two-layer compound side seal board sintered blank is machined, two-layer compound side seal board is made.
The aluminium silicon/zirconium matter refractory raw material is one kind in mullite, zirconium mullite, fused alumina zirconia；Aluminium silicon/zirconium the matter is resistance to Granularity≤3mm of fiery feed particles, granularity≤0.088mm of the aluminium silicon/zirconium matter refractory raw material fine powder.
The vitreous silica is the amorphous siliceous glass phase material formed after high melt with high-purity siliceous raw material, is melted Granularity≤3mm of fused silica particle, granularity≤0.088mm of vitreous silica fine powder.
The SiO2The SiO of micro mist2Content >=90wt%, specific surface area >=20m2/g。
The bonding agent is in Ludox, aluminium dihydrogen phosphate, calcium lignosulfonate aqueous solution, lignin sulfonic acid sodium water solution One kind.
The compacting is the compression moulding carried out using refractory material molding machine.
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art：
The vitreous silica that the present invention uses has the advantages that high temperature resistant, coefficient of thermal expansion are small, and mullite, zirconium mullite, There is fused alumina zirconia more excellent high temperature resistance and anti-molten steel erosion performance to be additionally added SiO on the basis of reasonable grain composition2 Micro mist, making prepared two-layer compound side seal board, not only high temperature resistant, thermal shock resistance are good and high temperature resistance molten steel is good, and with The cooperation of water cooling crystallization roll is tight, not bleed-out and wear-resistant, and using effect is significantly better than single layer side seal board, hence it is evident that it is thin to meet double roller The requirement of Strip casting technology.
Therefore, the present invention has the characteristics that high temperature resistant, thermal shock resistance are good and high temperature resistance molten steel is good, prepared The cooperation of two-layer compound side seal board and water cooling crystallization roll is tight, not bleed-out and wear-resistant, and using effect is significantly better than single layer side seal board, The requirement of Twin-roll Thin Strip Continuous Casting technology is clearly fulfilled.
Specific implementation mode
With reference to embodiment, the present invention will be further described, not limiting of its scope.
In present embodiment：
The granularity of the mullite particle, zirconium mullite particle and fused alumina zirconia particle≤3mm, the mullite fine powder, The granularity of zirconium mullite fine powder and fused alumina zirconia fine powder≤0.088mm.
The vitreous silica is the amorphous siliceous glass phase material formed after high melt with high-purity siliceous raw material, is melted Granularity≤3mm of fused silica particle, granularity≤0.088mm of vitreous silica fine powder.
The SiO2The SiO of micro mist2Content >=90wt%, specific surface area >=20m2/g。
The compacting is the compression moulding carried out using refractory material molding machine.
It is repeated no more in embodiment.
Embodiment 1
A kind of two-layer compound side seal board and preparation method thereof.Preparation method described in the present embodiment is：
With the mullite particle of 45~55wt%, the mullite fine powder of 40~50wt% and the SiO of 3~5wt%2Micro mist is Raw material I, the Ludox of the additional I 4.5~6.0wt% of raw material, then the raw material I and Ludox are added in batch mixer and mixed Practice, obtains half-dried pug I.
With the vitreous silica particle, the vitreous silica fine powder of 30~40wt% and the SiO of 3~5wt% of 55~65wt%2It is micro- Powder is raw material II, the aluminium dihydrogen phosphate of the additional II 5.5~7.0wt% of raw material, then by the raw material II and aluminium dihydrogen phosphate It is added in batch mixer and is kneaded, obtain half-dried pug II.
The half-dried pug I is put into the bottom of mold, then the half-dried pug II is placed on half-dried pug I, is put into The thickness of the half-dried pug I of mold bottom is the 25~30% of mould inner wall height, is put into the thickness of the half-dried pug II in mold Degree is the 65~75% of mould inner wall height；Then it is compressed to two-layer compound side seal slab, by the two-layer compound side seal slab It is dried under the conditions of 110~140 DEG C, 4~5 hours is kept the temperature under the conditions of 1400~1450 DEG C, two-layer compound side seal board burning is made Tie base.
Finally two-layer compound side seal board sintered blank is machined, two-layer compound side seal board is made.
Embodiment 2
A kind of two-layer compound side seal board and preparation method thereof.Preparation method described in the present embodiment is：
With the zirconium mullite particle, the zirconium mullite fine powder of 29~35wt% and the SiO of 1~3wt% of 64~70wt%2It is micro- Powder is raw material I, the calcium lignosulfonate aqueous solution of the additional I 3.5~5.0wt% of raw material, then by the raw material I and lignin Sulfoacid calcium aqueous solution is added in batch mixer and is kneaded, and obtains half-dried pug I.
With the vitreous silica particle, the vitreous silica fine powder of 35~45wt% and the SiO of 3~5wt% of 50~60wt%2It is micro- Powder is raw material II, the lignin sulfonic acid sodium water solution of the additional II 4.0~5.0wt% of raw material, then by the raw material II and wood Quality sulfonic acid sodium water solution is added in batch mixer and is kneaded, and obtains half-dried pug II.
The half-dried pug I is put into the bottom of mold, then the half-dried pug II is placed on half-dried pug I, is put into The thickness of the half-dried pug I of mold bottom is the 25~30% of mould inner wall height, is put into the thickness of the half-dried pug II in mold Degree is the 65~75% of mould inner wall height；Then it is compressed to two-layer compound side seal slab, by the two-layer compound side seal slab It is dried under the conditions of 110~140 DEG C, 3~4 hours is kept the temperature under the conditions of 1450~1500 DEG C, two-layer compound side seal board burning is made Tie base.
Finally two-layer compound side seal board sintered blank is machined, two-layer compound side seal board is made.
Embodiment 3
A kind of two-layer compound side seal board and preparation method thereof.Preparation method described in the present embodiment is：
With the fused alumina zirconia particle, the fused alumina zirconia fine powder of 29~35wt% and the SiO of 2~4wt% of 63~68wt%2Micro mist is Raw material I, the calcium lignosulfonate aqueous solution of the additional I 4.0~5.0wt% of raw material, then by the raw material I and lignin sulfonic acid Calcium aqueous solution is added in batch mixer and is kneaded, and obtains half-dried pug I.
With the vitreous silica particle, the vitreous silica fine powder of 40~50wt% and the SiO of 3~5wt% of 45~55wt%2It is micro- Powder is raw material II, the Ludox of the additional II 4.5~6.0wt% of raw material, then batch mixing is added in the raw material II and Ludox It is kneaded in machine, obtains half-dried pug II.
The half-dried pug I is put into the bottom of mold, then the half-dried pug II is placed on half-dried pug I, is put into The thickness of the half-dried pug I of mold bottom is the 25~30% of mould inner wall height, is put into the thickness of the half-dried pug II in mold Degree is the 65~75% of mould inner wall height；Then it is compressed to two-layer compound side seal slab, by the two-layer compound side seal slab It is dried under the conditions of 110~140 DEG C, 3~4 hours is kept the temperature under the conditions of 1450~1500 DEG C, two-layer compound side seal board burning is made Tie base.
Finally two-layer compound side seal board sintered blank is machined, two-layer compound side seal board is made.
Embodiment 4
A kind of two-layer compound side seal board and preparation method thereof.Preparation method described in the present embodiment is：
With the mullite particle of 55~65wt%, the mullite fine powder of 30~40wt% and the SiO of 3~5wt%2Micro mist is Raw material I, the aluminium dihydrogen phosphate of the additional I 5.5~7.0wt% of raw material, then batch mixing is added in the raw material I and aluminium dihydrogen phosphate It is kneaded in machine, obtains half-dried pug I.
With the vitreous silica particle, the vitreous silica fine powder of 29~35wt% and the SiO of 1~3wt% of 64~70wt%2It is micro- Powder is raw material II, the calcium lignosulfonate aqueous solution of the additional II 3.5~5.0wt% of raw material, then by the raw material II and wood Quality sulfoacid calcium aqueous solution is added in batch mixer and is kneaded, and obtains half-dried pug II.
The half-dried pug I is put into the bottom of mold, then the half-dried pug II is placed on half-dried pug I, is put into The thickness of the half-dried pug I of mold bottom is the 25~30% of mould inner wall height, is put into the thickness of the half-dried pug II in mold Degree is the 65~75% of mould inner wall height；Then it is compressed to two-layer compound side seal slab, by the two-layer compound side seal slab It is dried under the conditions of 110~140 DEG C, 4~5 hours is kept the temperature under the conditions of 1400~1450 DEG C, two-layer compound side seal board burning is made Tie base.
Finally two-layer compound side seal board sintered blank is machined, two-layer compound side seal board is made.
Embodiment 5
A kind of two-layer compound side seal board and preparation method thereof.Preparation method described in the present embodiment is：
With the zirconium mullite particle, the zirconium mullite fine powder of 35~45wt% and the SiO of 3~5wt% of 50~60wt%2It is micro- Powder is raw material I, the lignin sulfonic acid sodium water solution of the additional I 4.0~5.0wt% of raw material, then by the raw material I and lignin Sulfonic acid sodium water solution is added in batch mixer and is kneaded, and obtains half-dried pug I.
With the vitreous silica particle, the vitreous silica fine powder of 29~35wt% and the SiO of 2~4wt% of 63~68wt%2It is micro- Powder is raw material II, the calcium lignosulfonate aqueous solution of the additional II 4.0~5.0wt% of raw material, then by the raw material II and wood Quality sulfoacid calcium aqueous solution is added in batch mixer and is kneaded, and obtains half-dried pug II.
The half-dried pug I is put into the bottom of mold, then the half-dried pug II is placed on half-dried pug I, is put into The thickness of the half-dried pug I of mold bottom is the 25~30% of mould inner wall height, is put into the thickness of the half-dried pug II in mold Degree is the 65~75% of mould inner wall height；Then it is compressed to two-layer compound side seal slab, by the two-layer compound side seal slab It is dried under the conditions of 110~140 DEG C, 3~4 hours is kept the temperature under the conditions of 1450~1500 DEG C, two-layer compound side seal board burning is made Tie base.
Finally two-layer compound side seal board sintered blank is machined, two-layer compound side seal board is made.
Embodiment 6
A kind of two-layer compound side seal board and preparation method thereof.Preparation method described in the present embodiment is：
With the fused alumina zirconia particle, the fused alumina zirconia fine powder of 40~50wt% and the SiO of 3~5wt% of 45~55wt%2Micro mist is Raw material I, the Ludox of the additional I 4.5~6.0wt% of raw material, then the raw material I and Ludox are added in batch mixer and mixed Practice, obtains half-dried pug I.
With the vitreous silica particle, the vitreous silica fine powder of 29~35wt% and the SiO of 1~3wt% of 64~70wt%2It is micro- Powder is raw material II, the calcium lignosulfonate aqueous solution of the additional II 3.5~5.0wt% of raw material, then by the raw material II and wood Quality sulfoacid calcium aqueous solution is added in batch mixer and is kneaded, and obtains half-dried pug II.
The half-dried pug I is put into the bottom of mold, then the half-dried pug II is placed on half-dried pug I, is put into The thickness of the half-dried pug I of mold bottom is the 25~30% of mould inner wall height, is put into the thickness of the half-dried pug II in mold Degree is the 65~75% of mould inner wall height；Then it is compressed to two-layer compound side seal slab, by the two-layer compound side seal slab It is dried under the conditions of 110~140 DEG C, 4~5 hours is kept the temperature under the conditions of 1400~1450 DEG C, two-layer compound side seal board burning is made Tie base.
Finally two-layer compound side seal board sintered blank is machined, two-layer compound side seal board is made.
Present embodiment has following good effect compared with prior art：
The vitreous silica that present embodiment uses has the advantages that high temperature resistant, coefficient of thermal expansion are small, and mullite, zirconium Mullite, fused alumina zirconia have more excellent high temperature resistance and anti-molten steel erosion performance, on the basis of reasonable grain composition, also SiO is added2Micro mist, making prepared two-layer compound side seal board, not only high temperature resistant, thermal shock resistance are good and high temperature resistance molten steel Property it is good, and with the cooperation of water cooling crystallization roll is tight, not bleed-out and wear-resistant, the use for meeting Twin-roll Thin Strip Continuous Casting technology is wanted It asks.
Therefore, present embodiment has the characteristics that high temperature resistant, thermal shock resistance are good and high temperature resistance molten steel is good, The cooperation of prepared two-layer compound side seal board and water cooling crystallization roll is tight, not bleed-out and wear-resistant, meets Twin-Roll Thin Strip company The requirement of casting technology.Its performance and using effect are better than single layer side seal board.

Claims (7)

1. a kind of preparation method of two-layer compound side seal board, it is characterised in that the preparation method is：
With the aluminium silicon of 45~70wt%/zirconium matter refractory raw material particle, aluminium silicon/zirconium matter refractory raw material fine powder and 1 of 29~50wt% The SiO of~5wt%2Micro mist be raw material I, the bonding agent of the additional I 3.5~7wt% of raw material, then by the raw material I and combine Agent is added in batch mixer and is kneaded, and obtains half-dried pug I；
With the vitreous silica particle, the vitreous silica fine powder of 29~50wt% and the SiO of 1~5wt% of 45~70wt%2Micro mist is Raw material II, the bonding agent of the additional II 3.5~7wt% of raw material, then the raw material II and bonding agent are added in batch mixer and mixed Practice, obtains half-dried pug II；
The half-dried pug I is put into the bottom of mold, then the half-dried pug II is placed on half-dried pug I, is put into mold The thickness of the half-dried pug I of bottom is the 25~30% of mould inner wall height, and the thickness for the half-dried pug II being put into mold is The 65~75% of mould inner wall height；Then it is compressed to two-layer compound side seal slab, by the two-layer compound side seal slab 110 It is dried under the conditions of~140 DEG C, keeps the temperature 3~5 hours under the conditions of 1400~1500 DEG C, two-layer compound side seal board sintered blank is made；
Finally two-layer compound side seal board sintered blank is machined, two-layer compound side seal board is made；
The aluminium silicon/zirconium matter refractory raw material is one kind in mullite, zirconium mullite, fused alumina zirconia.
2. the preparation method of two-layer compound side seal board according to claim 1, it is characterised in that the aluminium silicon/zirconium matter fire resisting Granularity≤3mm of feed particles, granularity≤0.088mm of the aluminium silicon/zirconium matter refractory raw material fine powder.
3. the preparation method of two-layer compound side seal board according to claim 1, it is characterised in that the vitreous silica be with The amorphous siliceous glass phase material that high-purity siliceous raw material is formed after high melt, granularity≤3mm of vitreous silica particle melt Granularity≤0.088mm of fused silica fine powder.
4. the preparation method of two-layer compound side seal board according to claim 1, it is characterised in that the SiO2The SiO of micro mist2 Content >=90wt%, specific surface area >=20m2/g。
5. the preparation method of two-layer compound side seal board according to claim 1, it is characterised in that the bonding agent is that silicon is molten One kind in glue, aluminium dihydrogen phosphate, calcium lignosulfonate aqueous solution, lignin sulfonic acid sodium water solution.
6. the preparation method of two-layer compound side seal board according to claim 1, it is characterised in that the compacting is using resistance to The compression moulding that fiery material molding machine carries out.
7. a kind of two-layer compound side seal board, it is characterised in that the two-layer compound side seal board is appointed according in claim 1~6 Two-layer compound side seal board prepared by the preparation method of one two-layer compound side seal board.
CN201610263796.9A 2016-04-26 2016-04-26 A kind of two-layer compound side seal board and preparation method thereof Expired - Fee Related CN105924187B (en)

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WO2015020752A1 (en) * 2013-08-09 2015-02-12 Vesuvius Crucible Company Composite side dam
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