CN105801141B - Ausmelt furnace furnace bottom macro hole Corundum-spinel brick and preparation method thereof - Google Patents
Ausmelt furnace furnace bottom macro hole Corundum-spinel brick and preparation method thereof Download PDFInfo
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- CN105801141B CN105801141B CN201610172114.3A CN201610172114A CN105801141B CN 105801141 B CN105801141 B CN 105801141B CN 201610172114 A CN201610172114 A CN 201610172114A CN 105801141 B CN105801141 B CN 105801141B
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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
- C04B35/01—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
- C04B35/106—Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
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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
- 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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- 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
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3839—Refractory metal carbides
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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
- 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
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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
- 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 a kind of Ausmelt furnace furnace bottom macro hole corundum spinelle bricks and preparation method thereof.Its technical solution is：Using the plate diamond spar particle of 60 ~ 65wt% as aggregate, with the Cr of 17 ~ 22wt%7C3Fine powder, the magnesite fine powder of 11 ~ 16wt%, 1 ~ 3wt% γ Al2O3The zirconium oxide micro mist of micro mist and 1 ~ 4wt% are substrate material；By the content of the aggregate and the substrate material, the substrate material after mixing is added in the aggregate, then the additional Aluminum sol for accounting for 10 ~ 12wt% of the sum of the substrate material and the aggregate, mixing, molding, conserved 12 ~ 24 hours under the conditions of 25 ~ 30 DEG C, it is dry；It is subsequently placed in Muffle furnace, is warming up to 1550 ~ 1600 DEG C with the rate of 6 ~ 7 DEG C/min, keeps the temperature 1 ~ 1.5 hour, the macro hole corundum spinelle brick of Ausmelt furnace furnace bottom is made in furnace cooling.Present invention process is simple, and the macro hole corundum spinelle brick of prepared Ausmelt furnace furnace bottom has the characteristics that compressive resistance is high, flexural strength is big and thermal conductivity factor is small.
Description
Technical field
The invention belongs to Ausmelt furnace furnace bottom technical field of refractory materials.More particularly to a kind of Ausmelt furnace furnace bottom
With macro hole Corundum-spinel brick and preparation method thereof.
Background technology
Ausmelt Smelting technique is non-ferrous metal（Copper, nickel, lead, zinc, tin etc.）Efficient and ripe skill in pyrometallurgical smelting
Art means.Ausmelt furnace furnace bottom uses anti-domes, is broadly divided into working lining, arch springing brick layer, secondary according to function is smelted
Working lining and insulating layer, wherein furnace bottom insulating layer mainly for the heat exchange of isolation furnace body and external environment, ensure high temperature Australia this
The stable operation of wheat spy's stove.Though Ausmelt furnace furnace bottom insulating layer refractory material is not direct with the liquid metal of smelting and clinker
Contact and from corroding, but be subjected to the weight of liquid metal, clinker and refractory material.Therefore, low heat conductivity energy-saving should be realized
Heat preservation reaches high intensity load-bearing pressure resistance again, this proposes stringent matter with refractory material to Ausmelt furnace furnace bottom insulating layer
Amount requirement.
At present, Ausmelt furnace furnace bottom insulating layer is mainly high-alumina brick and clay brick with refractory material.
Using high-alumina brick as Ausmelt furnace furnace bottom insulating layer refractory material, refractoriness is high, compressive resistance is big, full
The load-bearing requirements of sufficient Ausmelt furnace furnace bottom insulating layer refractory material, but Al2O3Relief of thermal stress ability is poor, and high-alumina brick
Thermal conductivity factor is larger, reduces the heat-proof quality of Ausmelt furnace furnace bottom insulating layer.
Using clay brick as Ausmelt furnace furnace bottom insulating layer refractory material, though raw material abundance, price are low
Honest and clean, heat preservation and insulation is also preferable, but clay brick intensity is low, in thermal stress（High temperature）And mechanical stress（Load-bearing pressure resistance）Under the conditions of
It is also easy to produce deformation and damages, reduce the service life of Ausmelt furnace furnace bottom insulating layer.
Invention content
The present invention is directed to overcome prior art defect, it is therefore an objective to provide a kind of Ausmelt furnace furnace bottom simple for process with macro
The preparation method of hole Corundum-spinel brick, with this method prepare the macro hole Corundum-spinel brick of Ausmelt furnace furnace bottom it is resistance to
Compressive Strength is high, flexural strength is big and thermal conductivity factor is small, is particularly suitable for Ausmelt furnace furnace bottom insulating layer.
To achieve the above object, the technical solution adopted by the present invention is：Using the plate diamond spar particle of 60 ~ 65wt% as aggregate,
With the Cr of 17 ~ 22wt%7C3Fine powder, the magnesite fine powder of 11 ~ 16wt%, 1 ~ 3wt% γ-Al2O3The oxidation of micro mist and 1 ~ 4wt%
Zirconium micro mist is substrate material；By the content of the aggregate and the substrate material, first by substrate material mixing, then by the substrate material after mixing
It adds in the aggregate, is uniformly mixed；Then the additional Aluminum sol for accounting for 10 ~ 12wt% of the sum of the substrate material and the aggregate mixes
It closes uniformly, vibration moulding conserves 12 ~ 24 hours under the conditions of 25 ~ 30 DEG C, 12 ~ 18 hours dry under the conditions of 180 ~ 200 DEG C；
It is finally placed in Muffle furnace, is warming up to 1550 ~ 1600 DEG C with the heating rate of 6 ~ 7 DEG C/min, 1 ~ 1.5 hour is kept the temperature, with furnace cooling
But, the macro hole Corundum-spinel brick of Ausmelt furnace furnace bottom is made.
The main chemical compositions of the plate diamond spar are：Al2O3Content >=99wt%, Fe2O3Content ＜ 0.5wt%；The plate
The granularity of shape corundum in granules is 0.1 ~ 6mm.
The Cr7C3The Cr of fine powder7C3Content >=98wt%, Cr7C3The granularity of micro mist is 10 ~ 20 μm.
The MgCO of the magnesite fine powder3Content >=98wt%, the granularity of magnesite fine powder is 1 ~ 2 μm.
The ZrO of the zirconium oxide micro mist2Content >=99wt%, the granularity of zirconium oxide micro mist is 1 ~ 2 μm.
γ-the Al2O3The Al of micro mist2O3Content >=99wt%, γ-Al2O3The granularity of micro mist is 1 ~ 2 μm.
The colloid diameter of the Aluminum sol is 1 ~ 70nm, Al2O3Content is 20 ~ 30wt%.
Due to taking above-mentioned technical proposal, the present invention has following good effect compared with prior art：
1st, the present invention saves human resources, technological process is simple without special Preparation equipment and treatment technology.
2nd, the present invention enhances Ausmelt furnace furnace bottom with macro hole by being formed in situ spinel solid solution in sintering process
The compressive resistance and flexural strength of Corundum-spinel brick.
3rd, the present invention is using gas pore-creating caused by the decomposition reaction of raw material components and oxidation reaction, and combines Aluminum sol
The skin effect of middle nano colloidal particles thereby reduces Ausmelt furnace furnace bottom with macro Kong Gang to the pore size miniaturization in material
The thermal conductivity factor of jade-spinel brick.
Ausmelt furnace furnace bottom prepared by the present invention with macro hole Corundum-spinel brick after measured：Pore-size distribution is 0.1 ~ 3 μ
m；Compressive resistance is 85 ~ 90MPa；Flexural strength is 14.0 ~ 15.0MPa；Thermal conductivity factor is 2.20 ~ 2.25W/ (mK).
Therefore, the present invention has the characteristics that technological process is simple；The macro hole corundum-point of prepared Ausmelt furnace furnace bottom
The compressive resistance of spar brick is high, flexural strength is big and thermal conductivity factor is small.
Specific embodiment
The invention will be further described With reference to embodiment, not to the limitation of its protection domain.
It is first that the raw material in present embodiment and Aluminum sol Unify legislation is as follows to avoid repeating, in embodiment not
It repeats again：
The main chemical compositions of the plate diamond spar are：Al2O3Content >=99wt%, Fe2O3Content ＜ 0.5wt%；The plate
The granularity of shape corundum in granules is 0.1 ~ 6mm.
The Cr7C3The Cr of fine powder7C3Content >=98wt%, Cr7C3The granularity of micro mist is 10 ~ 20 μm.
The MgCO of the magnesite fine powder3Content >=98wt%, the granularity of magnesite fine powder is 1 ~ 2 μm.
The ZrO of the zirconium oxide micro mist2Content >=99wt%, the granularity of zirconium oxide micro mist is 1 ~ 2 μm.
γ-the Al2O3The Al of micro mist2O3Content >=99wt%, γ-Al2O3The granularity of micro mist is 1 ~ 2 μm.
The colloid diameter of the Aluminum sol is 1 ~ 70nm, Al2O3Content is 20 ~ 30wt%.
Embodiment 1
A kind of Ausmelt furnace furnace bottom macro hole Corundum-spinel brick and preparation method thereof.It is firm with the plate of 63 ~ 65wt%
Beautiful particle is aggregate, with the Cr of 17 ~ 19wt%7C3Fine powder, the magnesite fine powder of 11 ~ 13wt%, 1 ~ 2wt% γ-Al2O3Micro mist and
The zirconium oxide micro mist of 1 ~ 3wt% is substrate material；By the content of the aggregate and the substrate material, first by substrate material mixing, then will mix
Substrate material after even is added in the aggregate, is uniformly mixed；Then it is additional account for the sum of the substrate material and the aggregate 10 ~
The Aluminum sol of 11wt% is uniformly mixed, and vibration moulding conserves 12 ~ 24 hours under the conditions of 25 ~ 30 DEG C, in 180 ~ 200 DEG C of conditions
Lower drying 12 ~ 18 hours；It is finally placed in Muffle furnace, is warming up to 1575 ~ 1600 DEG C with the heating rate of 6 ~ 7 DEG C/min, heat preservation 1
~ 1.5 hours, the macro hole Corundum-spinel brick of Ausmelt furnace furnace bottom was made in furnace cooling.
Ausmelt furnace furnace bottom manufactured in the present embodiment with macro hole Corundum-spinel brick after measured：Pore-size distribution for 0.1 ~
1.5μm；Compressive resistance is 88 ~ 90MPa；Flexural strength is 14.6 ~ 15.0MPa；Thermal conductivity factor is 2.23 ~ 2.25W/ (mK).
Embodiment 2
A kind of Ausmelt furnace furnace bottom macro hole Corundum-spinel brick and preparation method thereof.It is firm with the plate of 62 ~ 64wt%
Beautiful particle is aggregate, with the Cr of 18 ~ 20wt%7C3Fine powder, the magnesite fine powder of 12 ~ 14wt%, 1 ~ 2wt% γ-Al2O3Micro mist and
The zirconium oxide micro mist of 1 ~ 3wt% is substrate material；By the content of the aggregate and the substrate material, first by substrate material mixing, then will mix
Substrate material after even is added in the aggregate, is uniformly mixed；Then it is additional account for the sum of the substrate material and the aggregate 10 ~
The Aluminum sol of 11wt% is uniformly mixed, and vibration moulding conserves 12 ~ 24 hours under the conditions of 25 ~ 30 DEG C, in 180 ~ 200 DEG C of conditions
Lower drying 12 ~ 18 hours；It is finally placed in Muffle furnace, is warming up to 1575 ~ 1600 DEG C with the heating rate of 6 ~ 7 DEG C/min, heat preservation 1
~ 1.5 hours, the macro hole Corundum-spinel brick of Ausmelt furnace furnace bottom was made in furnace cooling.
Ausmelt furnace furnace bottom manufactured in the present embodiment with macro hole Corundum-spinel brick after measured：Pore-size distribution is 1 ~ 2 μ
m；Compressive resistance is 87 ~ 89MPa；Flexural strength is 14.4 ~ 14.8MPa；Thermal conductivity factor is 2.22 ~ 2.24W/ (mK).
Embodiment 3
A kind of Ausmelt furnace furnace bottom macro hole Corundum-spinel brick and preparation method thereof.It is firm with the plate of 61 ~ 63wt%
Beautiful particle is aggregate, with the Cr of 19 ~ 21wt%7C3Fine powder, the magnesite fine powder of 13 ~ 15wt%, 2 ~ 3wt% γ-Al2O3Micro mist and
The zirconium oxide micro mist of 2 ~ 4wt% is substrate material；By the content of the aggregate and the substrate material, first by substrate material mixing, then will mix
Substrate material after even is added in the aggregate, is uniformly mixed；Then it is additional account for the sum of the substrate material and the aggregate 11 ~
The Aluminum sol of 12wt% is uniformly mixed, and vibration moulding conserves 12 ~ 24 hours under the conditions of 25 ~ 30 DEG C, in 180 ~ 200 DEG C of conditions
Lower drying 12 ~ 18 hours；It is finally placed in Muffle furnace, is warming up to 1550 ~ 1575 DEG C with the heating rate of 6 ~ 7 DEG C/min, heat preservation 1
~ 1.5 hours, the macro hole Corundum-spinel brick of Ausmelt furnace furnace bottom was made in furnace cooling.
Ausmelt furnace furnace bottom manufactured in the present embodiment with macro hole Corundum-spinel brick after measured：Pore-size distribution for 1.5 ~
2.5μm；Compressive resistance is 86 ~ 88MPa；Flexural strength is 14.2 ~ 14.6MPa；Thermal conductivity factor is 2.21 ~ 2.23W/ (mK).
Embodiment 4
A kind of Ausmelt furnace furnace bottom macro hole Corundum-spinel brick and preparation method thereof.It is firm with the plate of 60 ~ 62wt%
Beautiful particle is aggregate, with the Cr of 20 ~ 22wt%7C3Fine powder, the magnesite fine powder of 14 ~ 16wt%, 2 ~ 3wt% γ-Al2O3Micro mist and
The zirconium oxide micro mist of 2 ~ 4wt% is substrate material；By the content of the aggregate and the substrate material, first by substrate material mixing, then will mix
Substrate material after even is added in the aggregate, is uniformly mixed；Then it is additional account for the sum of the substrate material and the aggregate 11 ~
The Aluminum sol of 12wt% is uniformly mixed, and vibration moulding conserves 12 ~ 24 hours under the conditions of 25 ~ 30 DEG C, in 180 ~ 200 DEG C of conditions
Lower drying 12 ~ 18 hours；It is finally placed in Muffle furnace, is warming up to 1550 ~ 1575 DEG C with the heating rate of 6 ~ 7 DEG C/min, heat preservation 1
~ 1.5 hours, the macro hole Corundum-spinel brick of Ausmelt furnace furnace bottom was made in furnace cooling.
Ausmelt furnace furnace bottom manufactured in the present embodiment with macro hole Corundum-spinel brick after measured：Pore-size distribution is 2 ~ 3 μ
m；Compressive resistance is 85 ~ 87MPa；Flexural strength is 14.0 ~ 14.4MPa；Thermal conductivity factor is 2.20 ~ 2.22W/ (mK).
Present embodiment has following good effect compared with prior art：
1st, present embodiment saves human resources, technological process without special Preparation equipment and treatment technology
Simply；
2nd, present embodiment enhances Ausmelt furnace stove by being formed in situ spinel solid solution in sintering process
The compressive resistance and flexural strength of the macro hole Corundum-spinel brick in bottom.
3rd, present embodiment is using gas pore-creating caused by the decomposition reaction of raw material components and oxidation reaction, and ties
The skin effect of nano colloidal particles in Aluminum sol is closed to the pore size miniaturization in material, thereby reduces Ausmelt furnace furnace bottom
With the thermal conductivity factor of macro hole Corundum-spinel brick.
Present embodiment prepare Ausmelt furnace furnace bottom with macro hole Corundum-spinel brick after measured：Pore-size distribution
It is 0.1 ~ 3 μm；Compressive resistance is 85 ~ 90MPa；Flexural strength is 14.0 ~ 15.0MPa；Thermal conductivity factor is 2.20 ~ 2.25W/ (m
K)。
Therefore, present embodiment has the characteristics that technological process is simple；Prepared Ausmelt furnace furnace bottom is with macro
The compressive resistance of hole Corundum-spinel brick is high, flexural strength is big and thermal conductivity factor is small.
Claims (7)
1. a kind of Ausmelt furnace furnace bottom preparation method of macro hole Corundum-spinel brick, it is characterised in that with 60~65wt%
Plate diamond spar particle for aggregate, with the Cr of 17~22wt%7C3Fine powder, the magnesite fine powder of 11~16wt%, 1~3wt%
γ-Al2O3The zirconium oxide micro mist of micro mist and 1~4wt% are substrate material；By the content of the aggregate and the substrate material, first by base
Material mixing, then the substrate material after mixing is added in the aggregate, it is uniformly mixed；Then it is additional account for the substrate material with it is described
The Aluminum sol of 10~12wt% of the sum of aggregate is uniformly mixed, and vibration moulding conserves 12~24 hours under the conditions of 25~30 DEG C,
It is 12~18 hours dry under the conditions of 180~200 DEG C；It is finally placed in Muffle furnace, is heated up with the heating rate of 6~7 DEG C/min
To 1550~1600 DEG C, 1~1.5 hour is kept the temperature, the macro hole Corundum-spinel brick of Ausmelt furnace furnace bottom is made in furnace cooling；
The colloid diameter of the Aluminum sol is 1~70nm, Al2O3Content is 20~30wt%.
2. the Ausmelt furnace furnace bottom according to claim 1 preparation method of macro hole Corundum-spinel brick, feature exist
It is in the main chemical compositions of the plate diamond spar：Al2O3Content >=99wt%, Fe2O3Content ＜ 0.5wt%；The plate is firm
The granularity of beautiful particle is 0.1~6mm.
3. the Ausmelt furnace furnace bottom according to claim 1 preparation method of macro hole Corundum-spinel brick, feature exist
In the Cr7C3The Cr of fine powder7C3Content >=98wt%, Cr7C3The granularity of micro mist is 10~20 μm.
4. the Ausmelt furnace furnace bottom according to claim 1 preparation method of macro hole Corundum-spinel brick, feature exist
In the MgCO of the magnesite fine powder3Content >=98wt%, the granularity of magnesite fine powder is 1~2 μm.
5. the Ausmelt furnace furnace bottom according to claim 1 preparation method of macro hole Corundum-spinel brick, feature exist
In the ZrO of the zirconium oxide micro mist2Content >=99wt%, the granularity of zirconium oxide micro mist is 1~2 μm.
6. the Ausmelt furnace furnace bottom according to claim 1 preparation method of macro hole Corundum-spinel brick, feature exist
In the γ-Al2O3The Al of micro mist2O3Content >=99wt%, γ-Al2O3The granularity of micro mist is 1~2 μm.
7. the macro hole Corundum-spinel brick of a kind of Ausmelt furnace furnace bottom, it is characterised in that the Ausmelt furnace furnace bottom is with macro
Hole Corundum-spinel brick is according to the macro hole corundum-point of the Ausmelt furnace furnace bottom described in any one of claim 1~6
The macro hole Corundum-spinel brick of Ausmelt furnace furnace bottom prepared by the preparation method of spar brick.
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| CN201610172114.3A CN105801141B (en) | 2016-03-24 | 2016-03-24 | Ausmelt furnace furnace bottom macro hole Corundum-spinel brick and preparation method thereof |
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| CN201610172114.3A CN105801141B (en) | 2016-03-24 | 2016-03-24 | Ausmelt furnace furnace bottom macro hole Corundum-spinel brick and preparation method thereof |
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| CN105801141B true CN105801141B (en) | 2018-06-29 |
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| CN107640962A (en) * | 2017-10-24 | 2018-01-30 | 武汉科技大学 | A kind of Ausmelt copper smelters alumina chrome brick and preparation method thereof |
| CN108409308B (en) * | 2018-04-18 | 2021-06-04 | 武汉科技大学 | Gradient composition microporous corundum-spinel material and preparation method thereof |
| CN114292094A (en) * | 2021-12-28 | 2022-04-08 | 郑州荣盛窑炉耐火材料有限公司 | Acid-corrosion-resistant long-life refractory brick for Osmant furnace and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234905A (en) * | 2008-03-07 | 2008-08-06 | 宜兴市东坡耐火材料有限公司 | Corundum spinel refractory materials for RH lining and manufacturing method thereof |
| CN103979992A (en) * | 2014-06-09 | 2014-08-13 | 武汉科技大学 | Ladle porous brick and preparation method thereof |
| CN105236995A (en) * | 2015-09-01 | 2016-01-13 | 武汉科技大学 | Light-weight corundum-spinel castable and preparation method thereof |
| CN105272320A (en) * | 2015-12-04 | 2016-01-27 | 武汉科技大学 | Unfired Al2O3-Cr7C3 brick for hot metal ladle wall and preparation method thereof |
-
2016
- 2016-03-24 CN CN201610172114.3A patent/CN105801141B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234905A (en) * | 2008-03-07 | 2008-08-06 | 宜兴市东坡耐火材料有限公司 | Corundum spinel refractory materials for RH lining and manufacturing method thereof |
| CN103979992A (en) * | 2014-06-09 | 2014-08-13 | 武汉科技大学 | Ladle porous brick and preparation method thereof |
| CN105236995A (en) * | 2015-09-01 | 2016-01-13 | 武汉科技大学 | Light-weight corundum-spinel castable and preparation method thereof |
| CN105272320A (en) * | 2015-12-04 | 2016-01-27 | 武汉科技大学 | Unfired Al2O3-Cr7C3 brick for hot metal ladle wall and preparation method thereof |
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