CN109608174A - It can hydrated alumina combined corundum-spinel pouring material and preparation method thereof - Google Patents
It can hydrated alumina combined corundum-spinel pouring material and preparation method thereof Download PDFInfo
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- CN109608174A CN109608174A CN201910019328.0A CN201910019328A CN109608174A CN 109608174 A CN109608174 A CN 109608174A CN 201910019328 A CN201910019328 A CN 201910019328A CN 109608174 A CN109608174 A CN 109608174A
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- C—CHEMISTRY; METALLURGY
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- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
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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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3218—Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
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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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- C04B2235/02—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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
The present invention relates to one kind can hydrated alumina combined corundum-spinel pouring material and preparation method thereof.Its technical solution is: first with the plate diamond spar particle of the partial size < 5mm and >=3mm of 28.0~43.0wt%, the plate diamond spar particle of the partial size < 3mm and >=1mm of 12.0~26.0wt%, the plate diamond spar particle of the partial size < 1mm and >=0.5mm of 10.0~18.0wt%, the fused magnesite particle of the partial size < 1mm and >=0.5mm of 8.0~13.0wt%, the partial size < 0.088mm plate diamond spar fine powder of 6.0~11.0wt%, the partial size < 0.088mm fused magnesite fine powder of 2.0~7.0wt%, 6.0~10.0wt% can the silicon powder of hydrated alumina micro mist and 1.5~4.0wt% be raw material, the bonding agent of additional 4.5~5.5wt% of raw material, it mixes , form, dry, being made can hydrated alumina combined corundum-spinel pouring material.Present invention process is simple and production cost is low；Made products machinery intensity is high, slag resistance is excellent and high temperature resistance is good.
Description
Technical field
The invention belongs to ladle unshape refractory technical fields.More particularly to one kind can hydrated alumina combine it is rigid
Jade-spinel pouring material and preparation method thereof.
Background technique
With the development of science and technology, demand of the people to clean steel and other special steel materials is continuously increased, to unsetting fire resisting
There has also been relatively tightened up conditions for material product.The following unsetting refractory product will rise year by year, and proportion also can be more next
It is bigger.No cement, ultra-low cement refractory castable advantage also can increasingly display.The R&D and promotion of new junction agent will
It is greatly facilitated the improvement of castable refractory performance and the extension of service life, to facilitate the development again of global metallurgy industry.
Corundum-spinel castable has the characteristics that high-temperature behavior is excellent, volume stability is good, slag resistance is superior, extensively at present
Applied to refractory materials key positions such as ladle liner, RH furnace, air brick, brick cups.
Currently, preparing the technology of corundum-spinel castable has: such as " a kind of corundum-spinel castable and its preparation side
Method " (CN107244904A) patented technology discloses one kind with plate diamond spar, electric melting magnesium aluminum spinel and Reactive alumina
Etc. matrix be that primary raw material prepares the technology of corundum-spinel castable, point in corundum-spinel castable made from the technology
Spar object mutually derives from pre-add magnesium aluminate spinel, and energy consumption is higher, and higher operating costs；Such as a kind of " ladle corundum-point
Spar castable and preparation method thereof " (CN105060908B) patented technology, disclose it is a kind of with corundum containing magnesium, fused magnesite and
The matrix such as Reactive alumina are the technology that primary raw material prepares corundum-spinel castable, corundum-point made from the technology
Hole caused by becoming homeless in spar castable there are more organic bond burning, influences slag corrosion resistance ability, and the corundum containing magnesium
Introduce the high-temperature behavior that can reduce product.
Summary of the invention
The present invention is directed to overcome prior art defect, it is therefore an objective to provide a kind of simple process and production cost is low is hydrated
Aluminium oxide combined corundum-spinel pouring material preparation method, can hydrated alumina combined corundum-point crystalline substance prepared by the method
The high mechanical strength of stone castable, slag resistance are excellent and high temperature resistance is good.
To achieve the above object, the technical scheme adopted by the invention is that: first be less than with the partial size of 28.0~43.0wt%
The partial size of 5mm and plate diamond spar particle, 12.0~26.0wt% more than or equal to 3mm is less than 3mm and is more than or equal to the plate of 1mm
Corundum in granules, 10.0~18.0wt% partial size be less than 1mm and more than or equal to 0.5mm plate diamond spar particle, 8.0~
The partial size of 13.0wt% is less than 1mm and the partial size of fused magnesite particle, 6.0~11.0wt% more than or equal to 0.5mm is less than
0.088mm plate diamond spar fine powder, 2.0~7.0wt% partial size be less than 0.088mm fused magnesite fine powder, 6.0~10.0wt%
Can the silicon powder of hydrated alumina micro mist and 1.5~4.0wt% be raw material, the bonding agent of the additional 4.5~5.5wt% of raw material,
It is uniformly mixed, moulding by casting, 16~24 hours dry under the conditions of 110 DEG C, being made can hydrated alumina combined corundum-spinelle
Castable.
The chemical component of the plate diamond spar are as follows: Al2O3Content >=99.4wt%, Na2O content≤0.15wt%, Fe2O3Contain
Amount≤0.09wt%.
The chemical component of the fused magnesite are as follows: content of MgO >=97.3wt%, Na2O+K2O content≤0.56wt%,
Fe2O3Content≤0.12wt%.
It is described can hydrated alumina micro mist chemical component are as follows: Al2O3Content >=88.2wt%, Na2O+K2O content≤
0.42wt%, IL≤10.17wt%, can hydrated alumina micro mist partial size≤0.074mm.
The chemical component of the silicon powder are as follows: Si content >=99.5%, Al content≤0.20wt%, Fe content≤
0.15wt%；Partial size≤0.044mm of the silicon powder.
The bonding agent is one or more of Aluminum sol and silica solution.
Due to the adoption of the above technical scheme, the present invention has the positive effect that compared with prior art:
1, the present invention using plate diamond spar, fused magnesite and can hydrated alumina as primary raw material, in 110 after moulding by casting
Dried under the conditions of DEG C, obtain can hydrated alumina combined corundum-spinel pouring material, have simple process and production cost it is low
Advantage.
2, prepared by the present invention can hydrated alumina combined corundum-spinel pouring material: bulk density is 3.10~
3.20Kg/cm3, cold crushing strength is 100~120MPa；1000 DEG C of medium temperature compressive resistance is 50~60MPa, 1550 DEG C of items
Permanent line variation ± 0.2% under part；It can be used as the various flame-proof kiln liner using 1550 DEG C of temperature or more, and can satisfy it
The requirement frequently used, it is pollution-free to matallurgical products.
Therefore, the present invention has the characteristics that simple process, production cost are low and energy saving；Prepared can hydrated alumina knot
Conjunction corundum-spinel castable high mechanical strength, slag resistance is excellent and high temperature resistance is good.
Specific embodiment
The present invention will be further described With reference to embodiment, not to the limit of the scope of the present invention
System.
It is first that related technical parameter Unify legislation involved by present embodiment is as follows to avoid repeating, implement
It is repeated no more in example:
The chemical component of the plate diamond spar are as follows: Al2O3Content >=99.4wt%, Na2O content≤0.15wt%, Fe2O3Contain
Amount≤0.09wt%.
The chemical component of the fused magnesite are as follows: content of MgO >=97.3wt%, Na2O+K2O content≤0.56wt%,
Fe2O3Content≤0.12wt%.
It is described can hydrated alumina micro mist chemical component are as follows: Al2O3Content >=88.2wt%, Na2O+K2O content≤
0.42wt%, IL≤10.17wt%, can hydrated alumina micro mist partial size≤0.074mm.
The chemical component of the silicon powder are as follows: Si content >=99.5%, Al content≤0.20wt%, Fe content≤
0.15wt%；Partial size≤0.044mm of the silicon powder.
Embodiment 1
One kind can hydrated alumina combined corundum-spinel pouring material and preparation method thereof.First with 28.0~31.0wt%
Partial size be less than 5mm and be less than 3mm more than or equal to the partial size of the plate diamond spar particle of 3mm, 23.0~26.0wt% and be greater than etc.
In the partial size of the plate diamond spar particle of 1mm, 10.0~12.0wt% be less than 1mm and plate diamond spar particle more than or equal to 0.5mm,
The partial size of 12.0~13.0wt% is less than the partial size of 1mm and fused magnesite particle, 10.0~11.0wt% more than or equal to 0.5mm
Partial size less than 0.088mm plate diamond spar fine powder, 2.0~3.0wt% be less than 0.088mm fused magnesite fine powder, 9.0~
10.0wt% can the silicon powder of hydrated alumina micro mist and 1.5~2.5wt% be raw material, the additional 5.0~5.5wt% of raw material
Bonding agent, be uniformly mixed, moulding by casting, dry 16~24 hours under the conditions of 110 DEG C, be made can hydrated alumina combine it is rigid
Jade-spinel pouring material.
The bonding agent is the mixture of Aluminum sol and silica solution.
Embodiment 2
One kind can hydrated alumina combined corundum-spinel pouring material and preparation method thereof.First with 31.0~34.0wt%
Partial size be less than 5mm and be less than 3mm more than or equal to the partial size of the plate diamond spar particle of 3mm, 20.0~23.0wt% and be greater than etc.
In the partial size of the plate diamond spar particle of 1mm, 11.0~13.0wt% be less than 1mm and plate diamond spar particle more than or equal to 0.5mm,
The partial size of 11.0~12.0wt% is less than the partial size of 1mm and fused magnesite particle, 9.0~10.0wt% more than or equal to 0.5mm
Partial size less than 0.088mm plate diamond spar fine powder, 3.0~4.0wt% be less than 0.088mm fused magnesite fine powder, 8.0~
9.0wt% can the silicon powder of hydrated alumina micro mist and 2.0~3.0wt% be raw material, the additional 5.0~5.5wt% of raw material
Bonding agent, be uniformly mixed, moulding by casting, dry 16~24 hours under the conditions of 110 DEG C, be made can hydrated alumina combine it is rigid
Jade-spinel pouring material.
The bonding agent is the mixture of Aluminum sol and silica solution.
Embodiment 3
One kind can hydrated alumina combined corundum-spinel pouring material and preparation method thereof.First with 34.0~37.0wt%
Partial size be less than 5mm and be less than 3mm more than or equal to the partial size of the plate diamond spar particle of 3mm, 17.0~20.0wt% and be greater than etc.
In the partial size of the plate diamond spar particle of 1mm, 13.0~15.0wt% be less than 1mm and plate diamond spar particle more than or equal to 0.5mm,
The partial size of 10.0~11.0wt% is less than 1mm and small more than or equal to fused magnesite particle, the partial size of 8.0~9.0wt% of 0.5mm
It is less than 0.088mm fused magnesite fine powder, 7.0~8.0wt% in the partial size of 0.088mm plate diamond spar fine powder, 4.0~5.0wt%
Can the silicon powder of hydrated alumina micro mist and 2.5~3.5wt% be raw material, the combination of the additional 4.5~5.0wt% of raw material
Agent is uniformly mixed, moulding by casting, 16~24 hours dry under the conditions of 110 DEG C, and being made can hydrated alumina combined corundum-point
Spar castable.
The bonding agent is silica solution.
Embodiment 4
One kind can hydrated alumina combined corundum-spinel pouring material and preparation method thereof.First with 37.0~40.0wt%
Partial size be less than 5mm and be less than 3mm more than or equal to the partial size of the plate diamond spar particle of 3mm, 14.0~17.0wt% and be greater than etc.
In the partial size of the plate diamond spar particle of 1mm, 14.0~16.0wt% be less than 1mm and plate diamond spar particle more than or equal to 0.5mm,
The partial size of 9.0~10.0wt% is less than 1mm and small more than or equal to fused magnesite particle, the partial size of 7.0~8.0wt% of 0.5mm
It is less than 0.088mm fused magnesite fine powder, 7.0~8.0wt% in the partial size of 0.088mm plate diamond spar fine powder, 5.0~6.0wt%
Can the silicon powder of hydrated alumina micro mist and 3.0~4.0wt% be raw material, the combination of the additional 5.0~5.5wt% of raw material
Agent, moulding by casting is 16~24 hours dry under the conditions of 110 DEG C, and being made can hydrated alumina combined corundum-spinel pouring
Material.
The bonding agent is the mixture of Aluminum sol and silica solution.
Embodiment 5
One kind can hydrated alumina combined corundum-spinel pouring material and preparation method thereof.First with 40.0~43.0wt%
Partial size be less than 5mm and be less than 3mm more than or equal to the partial size of the plate diamond spar particle of 3mm, 11.0~14.0wt% and be greater than etc.
In the partial size of the plate diamond spar particle of 1mm, 16.0~18.0wt% be less than 1mm and plate diamond spar particle more than or equal to 0.5mm,
The partial size of 8.0~9.0wt% is less than 1mm and the partial size of fused magnesite particle, 6.0~7.0wt% more than or equal to 0.5mm is less than
0.088mm plate diamond spar fine powder, 6.0~7.0wt% partial size be less than 0.088mm fused magnesite fine powder, 6.0~7.0wt%
Can the silicon powder of hydrated alumina micro mist and 1.5~2.5wt% be raw material, the bonding agent of the additional 4.5~5.0wt% of raw material,
It is uniformly mixed, moulding by casting, 16~24 hours dry under the conditions of 110 DEG C, being made can hydrated alumina combined corundum-spinelle
Castable.
The bonding agent is Aluminum sol.
Present embodiment has the positive effect that compared with prior art:
1, present embodiment using plate diamond spar, fused magnesite and can hydrated alumina as primary raw material, through pouring into
Dried under the conditions of 110 DEG C after type, obtain can hydrated alumina combined corundum-spinel pouring material, have simple process and life
Produce advantage at low cost.
2, present embodiment preparation can hydrated alumina combined corundum-spinel pouring material: bulk density is
3.10~3.20Kg/cm3, cold crushing strength is 100~120MPa；1000 DEG C of medium temperature compressive resistance is 50~60MPa,
Permanent line variation ± 0.2% under the conditions of 1550 DEG C；It can be used as the various flame-proof kiln liner using 1550 DEG C of temperature or more, and energy
Enough meet its requirement frequently used, it is pollution-free to matallurgical products.
Therefore, present embodiment has the characteristics that simple process, production cost are low and energy saving；Prepared is hydrated
Aluminium oxide combined corundum-spinel pouring material high mechanical strength, slag resistance are excellent and high temperature resistance is good.
Claims (7)
1. one kind can hydrated alumina combined corundum-spinel pouring material preparation method, it is characterised in that first with 28.0~
The partial size of 43.0wt% is less than 5mm and the partial size of plate diamond spar particle, 12.0~26.0wt% more than or equal to 3mm is less than 3mm
And the partial size of the plate diamond spar particle, 10.0~18.0wt% more than or equal to 1mm is less than 1mm and is more than or equal to the plate of 0.5mm
Corundum in granules, 8.0~13.0wt% partial size be less than 1mm and more than or equal to 0.5mm fused magnesite particle, 6.0~
It is thin that the partial size of 11.0wt% is less than 0.088mm plate diamond spar fine powder, the partial size of 2.0~7.0wt% is less than 0.088mm fused magnesite
Powder, 6.0~10.0wt% can the silicon powder of hydrated alumina micro mist and 1.5~4.0wt% be raw material, the additional raw material 4.5
The bonding agent of~5.5wt% is uniformly mixed, moulding by casting, 16~24 hours dry under the conditions of 110 DEG C, and oxygen can be hydrated by being made
Change aluminium combined corundum-spinel pouring material.
2. it is according to claim 1 can hydrated alumina combined corundum-spinel pouring material preparation method, feature exists
In the chemical component of the plate diamond spar are as follows: Al2O3Content >=99.4wt%, Na2O content≤0.15wt%, Fe2O3Content≤
0.09wt%.
3. it is according to claim 1 can hydrated alumina combined corundum-spinel pouring material preparation method, feature exists
In the chemical component of the fused magnesite are as follows: content of MgO >=97.3wt%, Na2O+K2O content≤0.56wt%, Fe2O3Content
≤ 0.12wt%.
4. it is according to claim 1 can hydrated alumina combined corundum-spinel pouring material preparation method, feature exists
In it is described can hydrated alumina micro mist chemical component are as follows: Al2O3Content >=88.2wt%, Na2O+K2O content≤0.42wt%,
IL≤10.17wt%, can hydrated alumina micro mist partial size≤0.074mm.
5. it is according to claim 1 can hydrated alumina combined corundum-spinel pouring material preparation method, feature exists
In the chemical component of the silicon powder are as follows: Si content >=99.5%, Al content≤0.20wt%, Fe content≤0.15wt%；It is described
Partial size≤0.044mm of silicon powder.
6. it is according to claim 1 can hydrated alumina combined corundum-spinel pouring material preparation method, feature exists
In the bonding agent be one or more of Aluminum sol and silica solution.
7. one kind can hydrated alumina combined corundum-spinel pouring material, it is characterised in that it is described can hydrated alumina combine it is rigid
Jade-spinel pouring material be any one of according to claim 1~6 described in can hydrated alumina combined corundum-spinelle pour
It can hydrated alumina combined corundum-spinel pouring material prepared by the preparation method of material feeding.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456984A (en) * | 2020-12-07 | 2021-03-09 | 海城利尔麦格西塔材料有限公司 | Magnesium spinel castable for ladle bottom and preparation method thereof |
| CN114685150A (en) * | 2022-04-12 | 2022-07-01 | 郑州金盛昌窑炉工程有限公司 | Tundish slag blocking wall castable and preparation method thereof |
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Application publication date: 20190412 |