CN108383505A - A kind of magnesia carbon brick and its production method containing titanium carbide - Google Patents
A kind of magnesia carbon brick and its production method containing titanium carbide Download PDFInfo
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- CN108383505A CN108383505A CN201810201604.0A CN201810201604A CN108383505A CN 108383505 A CN108383505 A CN 108383505A CN 201810201604 A CN201810201604 A CN 201810201604A CN 108383505 A CN108383505 A CN 108383505A
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- titanium carbide
- carbon brick
- magnesia carbon
- fused magnesite
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- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract 16
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 title claims abstract 14
- 239000011449 brick Substances 0.000 title claims abstract 12
- 229910052799 carbon Inorganic materials 0.000 title claims abstract 12
- 239000000395 magnesium oxide Substances 0.000 title claims abstract 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract 4
- 239000001095 magnesium carbonate Substances 0.000 claims abstract 10
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract 10
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract 10
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract 10
- 239000002245 particle Substances 0.000 claims abstract 7
- 239000000843 powder Substances 0.000 claims abstract 7
- 239000007767 bonding agent Substances 0.000 claims abstract 5
- 229910002804 graphite Inorganic materials 0.000 claims abstract 4
- 239000010439 graphite Substances 0.000 claims abstract 4
- 239000002994 raw material Substances 0.000 claims abstract 3
- 238000001035 drying Methods 0.000 claims 3
- 239000000470 constituent Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 238000000748 compression moulding Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- -1 phenolic aldehyde Chemical class 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000009628 steelmaking Methods 0.000 abstract 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000003763 carbonization Methods 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
Classifications
-
- 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
- C04B35/03—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
- C04B35/043—Refractories from grain sized mixtures
-
- 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
- C04B2235/3843—Titanium carbides
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/608—Green bodies or pre-forms with well-defined density
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention has supplied a kind of magnesia carbon brick containing titanium carbide, is prepared by the raw material of following parts by weight：62 84 parts of fused magnesite particle, 58 parts of fused magnesite fine powder, 13 parts of titanium carbide fine powder, 10 13 parts of crystalline flake graphite, 24 parts of bonding agent.Compared with prior art, the beneficial effects of the invention are as follows：A kind of magnesia carbon brick and its production method containing titanium carbide, using the fused magnesite of variable grain grading as primary raw material, using phenolic resin as bonding agent, pass through addition carbonization titanium additives, inoxidizability, the resistance to slag for improving magnesia carbon brick, make magnesia carbon brick service life be significantly increased, to improve the steel-making efficiency of steel mill, steel-making cost is reduced, ensures steel-making quality and safety.
Description
Technical field
The present invention relates to magnesia carbon brick technical field of refractory materials more particularly to a kind of magnesia carbon bricks and its production containing titanium carbide
Method.
Background technology
Magnesia carbon brick was gradually promoted the use of in converter since the early 1980s, compared with pervious furnace lining material,
Life of converter about improves 1 times or more.It was used on ladle (or ladle) working lining successively again later, especially refining ladle slag
Line position makes the service life of ladle significantly improve.
The damage of magnesia carbon brick, the oxidation of coal being firstly because in brick form decarburized layer, in addition magnesia and graphite under high temperature
Coefficient of thermal expansion differ greatly (at 1000 DEG C, respectively 1.4% and 0.2%), lead to tissue looseness, strength reduction, using
The effects that erosion of slag, mechanical erosion, the magnesium oxide particle in brick successively fall off, gradually by corrode to cause magnesia carbon brick
It is gradual damage in order to improve the inoxidizability of material, existing magnesia carbon brick is usually added into metallic aluminium powder, metallic silicon power, silicon carbide
Although powder, boron carbide powder etc., these materials play preferable oxidation-protective effect, but also bring along some side effects, such as excessive
The a large amount of Al that can be formed in use of metallic aluminium powder4C3, Al4C3Easily aquation generates serious tortoise so as to cause brick body
It splits, also easy hydrochemical metamorphism, Al and CaO can form eutectic, reduce the resistance to slag of material, add the magnesium carbon of many aluminium powders Al powder itself
Material there is also excessively high thermal expansion in use, and it is unfavorable etc. to furnace shell to generate internal stress；Metallic silicon power ultimately forms
Silicate eutectic phase is such as added too much, can reduce the resistance to slag of material；SiO is formed after Oxidation of SiC2, can also form silicic acid
Salt eutectic phase causes the erosion-resisting characteristics of magnesia carbon brick to decline；B is generated after boron carbide oxidation2O3Low melting point, equally to material
Resistance to slag it is also unfavorable.Titanium carbide can improve the performance of material, such as resistance to slag, inoxidizability after being added in magnesia carbon brick.
Invention content
The purpose of the present invention is to provide a kind of magnesia carbon brick and its production method containing titanium carbide, with variable grain grading
Fused magnesite is primary raw material, using phenolic resin as bonding agent, by addition carbonization titanium additives, improves the anti-oxidant of magnesia carbon brick
Property, resistance to slag, so that magnesia carbon brick service life is significantly increased, to improve the steel-making efficiency of steel mill, reduce steel-making cost, ensure
Make steel quality and safety.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of magnesia carbon brick containing titanium carbide is prepared by the raw material of following parts by weight：Fused magnesite particle 62-84
Part, 5-8 parts of fused magnesite fine powder, 1-3 parts of titanium carbide fine powder, 10-13 parts of crystalline flake graphite, 2-4 parts of bonding agent.
The fused magnesite particle, there are three types of grades：5-3mm、3-1mm、1-0mm；Wherein it is more than or equal to less than 5mm
The particle of 3mm:30-36 parts；Less than the particle that 3mm is more than or equal to 1mm：15-26 parts；Particle less than 1mm：12-22 parts.
The grade of the fused magnesite fine powder is 200 mesh.
The grade of the crystalline flake graphite is 100 mesh, and the mass percent of chemical constituent is：C >=94.0%.
The grade of the titanium carbide fine powder is 200 mesh, and the mass percent of chemical constituent is：TiC >=95.0%.
The bonding agent is phenolic resin.
A kind of production method of the magnesia carbon brick containing titanium carbide, includes the following steps：
1) each component is weighed spare；
2) first 2-5 minutes dry-mixed using fused magnesite particle as aggregate in production, it is then disposable in 2-3 minutes
It is slowly added to bonding agent, crystalline flake graphite mixing 1-2 minutes is added later, is eventually adding fused magnesite fine powder and titanium carbide mixing 20
It discharges after~30 minutes；
3) steam while dry-mixed fused magnesite granulated aggregate into batch mixing by 150 DEG C -370 DEG C, is passed through steam
With entire mixing process, until completing to discharge；
4) and then by batch mixing through microwave drying, batch mixing water content >=0.1wt% ,≤0.5wt% after drying；
5) by the siccative compression moulding after drying, after heat treatment, kiln discharge sorts.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of magnesia carbon brick and its production method containing titanium carbide, using the fused magnesite of variable grain grading as primary raw material,
Using phenolic resin as bonding agent, by addition carbonization titanium additives, inoxidizability, the resistance to slag of magnesia carbon brick is improved, magnesia carbon brick is made
Service life is significantly increased, and to improve the steel-making efficiency of steel mill, reduces steel-making cost, ensures steel-making quality and safety.
Specific implementation mode
The specific implementation mode of the present invention is described further below：
A kind of magnesia carbon brick containing titanium carbide is prepared by the raw material of following parts by weight：Fused magnesite particle 62-84
Part, 5-8 parts of fused magnesite fine powder, 1-3 parts of titanium carbide fine powder, 10-13 parts of crystalline flake graphite, 2-4 parts of bonding agent.
The fused magnesite particle, there are three types of grades：5-3mm、3-1mm、1-0mm；Wherein it is more than or equal to less than 5mm
The particle of 3mm:30-36 parts；Less than the particle that 3mm is more than or equal to 1mm：15-26 parts；Particle less than 1mm：12-22 parts.
The grade of the fused magnesite fine powder is 200 mesh.The physical and chemical index of fused magnesite is：MgO >=97.5wt%, CaO
≤ 1.5wt%, SiO2≤ 1.2wt%, Fe2O3≤ 0.6wt%, body is close >=3.45g/ ㎝3。
The grade of the crystalline flake graphite is 100 mesh, and the mass percent of chemical constituent is：C >=94.0%.
The grade of the titanium carbide fine powder is 200 mesh, and the mass percent of chemical constituent is：TiC >=95.0%.
The bonding agent is phenolic resin.The mass percent and index of its chemical constituent be：Solid content >=80%, carbon residue
>=46%, free phenol≤10%, moisture≤3.0%, pH value 6~7.
A kind of production method of the magnesia carbon brick containing titanium carbide, includes the following steps：
1) each component is weighed spare；
2) first 2-5 minutes dry-mixed using fused magnesite particle as aggregate in production, it is then disposable in 2-3 minutes
It is slowly added to bonding agent, crystalline flake graphite mixing 1-2 minutes is added later, is eventually adding fused magnesite fine powder and titanium carbide mixing 20
It discharges after~30 minutes；
3) steam while dry-mixed fused magnesite granulated aggregate into batch mixing by 150 DEG C -370 DEG C, is passed through steam
With entire mixing process, until completing to discharge；
4) and then by batch mixing through microwave drying, batch mixing water content >=0.1wt% ,≤0.5wt% after drying；
5) by the siccative compression moulding after drying, after heat treatment, kiln discharge sorts.
The grain size and content of the used dispensings of embodiment 1-3 are as shown in table 1：
Table 1
The production method of 3 embodiments provided by the invention includes the following steps：
1) dispensing：
Raw material is weighed by formula in table 1.
2) it is kneaded：
High speed kolleroang is opened, first addition granulated aggregate is 2-5 minutes dry-mixed, then disposable in 2-3 minutes slowly to add
Enter bonding agent phenolic resin, adds crystalline flake graphite mixed 1-2 minutes, together by fused magnesite fine powder and additive titanium carbide finally
It is added after being kneaded 20-30 minutes and discharges.
Steam while dry-mixed fused magnesite granulated aggregate into batch mixing by 150 DEG C -370 DEG C, is passed through steam companion
With entire mixing process, until completing to discharge.
Then by batch mixing through microwave drying；It is stirred in drying, to prevent hot-spot, batch mixing water content after drying=
0.3wt%.
3) it is molded：
Mixed pug is press-formed by 1200t.Quadrangle cloth is abided by when molding, heavy principle carries out after first light
Operation.
4) it is heat-treated：
The semi-finished product of compression moulding, which enter in dry kiln, carries out heat treatment 24 hours or more.It wherein must not be high into kilneye temperature
In 60 DEG C, baking time 8 hours or more, 110 DEG C of baking times 8 hours or more, 200-250 DEG C of baking time 8 hours or more.
A kind of magnesia carbon brick containing titanium carbide of the present invention, main physical and chemical index are as follows：MgO >=76.0wt%；200 DEG C of bakings
Bulk density >=3.03g/cm afterwards3；Apparent porosity (200 DEG C × for 24 hours)≤4%；Compressive resistance (200 DEG C × for 24 hours) >=41MPa；
Linear change rate (1600 DEG C × 3h) 0~1.0%；High temperature break resistant intensity/MPa (1400 DEG C × 0.5h) >=13.
Claims (7)
1. a kind of magnesia carbon brick containing titanium carbide, which is characterized in that be prepared by the raw material of following parts by weight：Fused magnesite
62-84 parts of particle, 5-8 parts of fused magnesite fine powder, 1-3 parts of titanium carbide fine powder, 10-13 parts of crystalline flake graphite, 2-4 parts of bonding agent.
2. a kind of magnesia carbon brick containing titanium carbide according to claim 1, which is characterized in that the fused magnesite particle,
There are three types of grades：5-3mm、3-1mm、1-0mm；Wherein it is less than the particle that 5mm is more than or equal to 3mm:30-36 parts；It is more than less than 3mm
Particle equal to 1mm：15-26 parts；Particle less than 1mm：12-22 parts.
3. a kind of magnesia carbon brick containing titanium carbide according to claim 1, which is characterized in that the grain of the fused magnesite fine powder
Grade is 200 mesh.
4. a kind of magnesia carbon brick containing titanium carbide according to claim 1, which is characterized in that the grade of the crystalline flake graphite
Mass percent for 100 mesh, chemical constituent is：C >=94.0%.
5. a kind of magnesia carbon brick containing titanium carbide according to claim 1, which is characterized in that the grain of the titanium carbide fine powder
Grade is 200 mesh, and the mass percent of chemical constituent is：TiC >=95.0%.
6. a kind of magnesia carbon brick containing titanium carbide according to claim 1, which is characterized in that the bonding agent is phenolic aldehyde tree
Fat.
7. it is a kind of claim 1-6 its any one of as described in the magnesia carbon brick containing titanium carbide production method, feature exists
In including the following steps：
1) each component is weighed spare；
2) first 2-5 minutes dry-mixed using fused magnesite particle as aggregate in production, it is then disposable slow in 2-3 minutes
Bonding agent is added, crystalline flake graphite mixing 1-2 minutes is added later, is eventually adding fused magnesite fine powder and titanium carbide mixing 20~30
It discharges after minute；
3) steam while dry-mixed fused magnesite granulated aggregate into batch mixing by 150 DEG C -370 DEG C, is passed through steam tracing
Entire mixing process, until completing to discharge；
4) and then by batch mixing through microwave drying, batch mixing water content >=0.1wt% ,≤0.5wt% after drying；
5) by the siccative compression moulding after drying, after heat treatment, kiln discharge sorts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810201604.0A CN108383505A (en) | 2018-03-12 | 2018-03-12 | A kind of magnesia carbon brick and its production method containing titanium carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810201604.0A CN108383505A (en) | 2018-03-12 | 2018-03-12 | A kind of magnesia carbon brick and its production method containing titanium carbide |
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| Publication Number | Publication Date |
|---|---|
| CN108383505A true CN108383505A (en) | 2018-08-10 |
Family
ID=63067586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810201604.0A Pending CN108383505A (en) | 2018-03-12 | 2018-03-12 | A kind of magnesia carbon brick and its production method containing titanium carbide |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109265144A (en) * | 2018-08-27 | 2019-01-25 | 海城利尔麦格西塔材料有限公司 | A kind of converter body brick and preparation method thereof adding titanium nitride |
| CN111302770A (en) * | 2020-02-18 | 2020-06-19 | 海城利尔麦格西塔材料有限公司 | Anti-erosion ladle magnesia carbon brick taking calcium magnesium aluminate as additive and preparation method thereof |
| CN112125650A (en) * | 2020-09-28 | 2020-12-25 | 北京利尔高温材料股份有限公司 | Magnesia carbon brick for vicinity of electric furnace door and preparation method thereof |
| CN118754614A (en) * | 2024-09-06 | 2024-10-11 | 北京利尔高温材料股份有限公司 | Magnesia-iron spinel brick for cement kiln and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109265144A (en) * | 2018-08-27 | 2019-01-25 | 海城利尔麦格西塔材料有限公司 | A kind of converter body brick and preparation method thereof adding titanium nitride |
| CN111302770A (en) * | 2020-02-18 | 2020-06-19 | 海城利尔麦格西塔材料有限公司 | Anti-erosion ladle magnesia carbon brick taking calcium magnesium aluminate as additive and preparation method thereof |
| CN112125650A (en) * | 2020-09-28 | 2020-12-25 | 北京利尔高温材料股份有限公司 | Magnesia carbon brick for vicinity of electric furnace door and preparation method thereof |
| CN118754614A (en) * | 2024-09-06 | 2024-10-11 | 北京利尔高温材料股份有限公司 | Magnesia-iron spinel brick for cement kiln and preparation method thereof |
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Application publication date: 20180810 |