CN116589288A - Antioxidant magnesia carbon brick - Google Patents
Antioxidant magnesia carbon brick Download PDFInfo
- Publication number
- CN116589288A CN116589288A CN202310435582.5A CN202310435582A CN116589288A CN 116589288 A CN116589288 A CN 116589288A CN 202310435582 A CN202310435582 A CN 202310435582A CN 116589288 A CN116589288 A CN 116589288A
- Authority
- CN
- China
- Prior art keywords
- parts
- magnesia
- carbon brick
- magnesia carbon
- fused
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 72
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000011449 brick Substances 0.000 title claims abstract description 43
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 43
- 239000003963 antioxidant agent Substances 0.000 title description 9
- 230000003078 antioxidant effect Effects 0.000 title description 9
- 239000002245 particle Substances 0.000 claims abstract description 24
- 230000003647 oxidation Effects 0.000 claims abstract description 22
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 22
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 19
- 239000011575 calcium Substances 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 14
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052580 B4C Inorganic materials 0.000 claims abstract description 10
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000005011 phenolic resin Substances 0.000 claims abstract description 10
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 10
- 230000003064 anti-oxidating effect Effects 0.000 claims 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000003723 Smelting Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 description 4
- RWDBMHZWXLUGIB-UHFFFAOYSA-N [C].[Mg] Chemical compound [C].[Mg] RWDBMHZWXLUGIB-UHFFFAOYSA-N 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011233 carbonaceous binding agent Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 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
- C04B2235/3804—Borides
-
- 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
- C04B2235/3821—Boron 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
- C04B2235/70—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
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
-
- 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
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9684—Oxidation resistance
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 invention relates to a magnesia carbon brick, in particular to an oxidation-resistant magnesia carbon brick, which comprises the following components in parts by weight: 60-80 parts of fused magnesia particles, 10-20 parts of fused magnesia fine powder, 10-20 parts of graphite, 0.1-1 part of calcium boride, 0.1-1 part of boron carbide, 1-5 parts of phenolic resin and 0.1-1 part of urotropine. The invention provides an oxidation-resistant magnesia carbon brick, wherein calcium boride is added into raw materials to improve oxidation resistance of the magnesia carbon brick, thereby meeting the requirements of special steel smelting and meeting the excellent performance of the magnesia carbon brick.
Description
Technical Field
The invention relates to a magnesia carbon brick, in particular to an oxidation-resistant magnesia carbon brick.
Background
The magnesia carbon brick is a non-sintered composite refractory material which is formed by taking high-melting-point alkaline oxide magnesia (melting point 2800 ℃) and high-melting-point carbon materials which are difficult to infiltrate by slag as raw materials, adding various non-oxide additives and combining with a carbonaceous binding agent. The magnesia carbon brick is widely applied to the lining parts of steel-making blast furnaces, electric furnaces, converters, refining furnace continuous casting systems and ladles.
The magnesia carbon brick is used as a composite refractory material, effectively utilizes the strong slag erosion resistance of magnesia and the high thermal conductivity and low expansibility of carbon, and compensates the biggest defect of poor spalling resistance of magnesia. The excellent performance of the magnesia carbon brick depends on the existence of carbon in the brick, and oxidation of the carbon in the use process easily causes the deterioration of product tissues, so that slag invades into the brick along gaps, erodes magnesia particles, and reduces the service life of the magnesia carbon brick.
With the continuous development and improvement of production technology, the requirements on refractory materials are also continuously increased, so that the improvement of the oxidation resistance of magnesia carbon bricks is very important.
Disclosure of Invention
The invention provides an antioxidant magnesia carbon brick, which aims to solve the problems that the magnesia carbon brick in the prior art has poor oxidation resistance and the oxidation of carbon is easy to cause the deterioration of product tissues in the using process.
In order to solve the technical problems, the invention provides an antioxidant magnesia carbon brick, which comprises the following components in parts by weight: 60-80 parts of fused magnesia particles, 10-20 parts of fused magnesia fine powder, 10-20 parts of graphite, 0.1-1 part of calcium boride, 0.1-1 part of boron carbide, 1-5 parts of phenolic resin and 0.1-1 part of urotropine.
The fused magnesia particles comprise magnesia particles with three particle sizes, wherein the three particle sizes are respectively 5-3 mm, 3-1 mm and less than or equal to 1mm.
The granularity of the fused magnesia fine powder is less than or equal to 0.088mm.
The fused magnesia powder comprises 74 parts by weight of fused magnesia particles, 11 parts by weight of fused magnesia fine powder, 15 parts by weight of graphite, 0.2 part by weight of calcium boride, 0.2 part by weight of boron carbide, 3 parts by weight of phenolic resin and 0.3 part by weight of urotropine.
The invention has the beneficial effects that: the invention provides an oxidation-resistant magnesia carbon brick, wherein calcium boride is added into raw materials to improve oxidation resistance of the magnesia carbon brick, thereby meeting the requirements of special steel smelting and meeting the excellent performance of the magnesia carbon brick.
The antioxidant calcium boride is added, so that the oxidation of carbon is prevented, and the further densification of a tissue structure is promoted, so that the high-temperature flexural strength, oxidation resistance and erosion resistance of the magnesia carbon brick are greatly improved, and the service life of the magnesia carbon brick is prolonged.
Detailed Description
The invention will now be further illustrated with reference to examples.
The invention provides an antioxidant magnesia carbon brick, which comprises the following components in parts by weight: 60-80 parts of fused magnesia particles, 10-20 parts of fused magnesia fine powder, 10-20 parts of graphite, 0.1-1 part of calcium boride, 0.1-1 part of boron carbide, 1-5 parts of phenolic resin and 0.1-1 part of urotropine.
In the embodiment, the fused magnesia particles comprise magnesia particles with three particle sizes, wherein the three particle sizes are respectively 5-3 mm, 3-1 mm and less than or equal to 1mm. The granularity of the fused magnesia fine powder is less than or equal to 0.088mm.
Example 1
Preferably, in this embodiment, the weight portion of the fused magnesia particles is 74 parts (the particle size distribution of the fused magnesia is shown in table 1), the weight portion of the fused magnesia fine powder is 11 parts, the weight portion of the graphite is 15 parts, the weight portion of the calcium boride is 0.2 part, the weight portion of the boron carbide is 0.2 part, the weight portion of the phenolic resin is 3 parts, and the weight portion of the urotropine is 0.3 part.
TABLE 1 particle size distribution of fused magnesite
The raw materials are weighed according to the proportion, fully mixed, put into a die, then pressed and molded, and the molded green brick is put into a kiln for baking, and is taken out from the kiln to obtain the finished magnesia carbon brick.
The calcium boride has quite stable physical and chemical properties, and has the characteristics of water insolubility, oxidation resistance, thermal shock resistance, chemical erosion resistance and the like. Particularly has high strength and stability under thermal shock. The magnesium carbon brick of the invention prevents oxidation of carbon due to the addition of the antioxidant calcium boride, and promotes further densification of the tissue structure, so that the high-temperature flexural strength, oxidation resistance and erosion resistance of the magnesium carbon brick are greatly improved, thereby prolonging the service life of the magnesium carbon brick.
The invention provides an oxidation-resistant magnesia carbon brick, wherein calcium boride is added into raw materials to improve oxidation resistance of the magnesia carbon brick, thereby meeting the requirements of special steel smelting and meeting the excellent performance of the magnesia carbon brick.
Example two
The invention provides an antioxidant magnesia carbon brick, which comprises the following components in parts by weight: 60 parts of fused magnesia particles, 10 parts of fused magnesia fine powder, 10 parts of graphite, 0.1 part of calcium boride, 0.1 part of boron carbide, 1 part of phenolic resin and 0.1 part of urotropine.
Example III
The invention provides an antioxidant magnesia carbon brick, which comprises the following components in parts by weight: 80 parts of fused magnesia particles, 20 parts of fused magnesia fine powder, 20 parts of graphite, 1 part of calcium boride, 1 part of boron carbide, 5 parts of phenolic resin and 1 part of urotropine.
Comparative example one
The magnesia carbon brick comprises the following components in parts by weight: 75 parts of fused magnesia particles, 15 parts of fused magnesia fine powder, 15 parts of graphite, 0.5 part of boron carbide, 2.5 parts of phenolic resin and 0.5 part of urotropine.
The performance test data are shown in table 1.
TABLE 1
| Project | Example 1 | Example two | Example III | Comparative example one |
| Bulk Density (g/m 3) | 3.15 | 3.12 | 3.05 | 3.02 |
| Apparent porosity (%) | 2.1 | 2.3 | 2.2 | 2.1 |
| Normal temperature compressive strength (Mpa) | 52 | 53.3 | 51.5 | 50.2 |
| High temperature flexural strength (Mpa) | 6.5 | 6.4 | 6.1 | 5.9 |
| Oxidation resistance (decarbonizing layer thickness mm) | 3.1 | 3.5 | 2.9 | 4.8 |
| Linear expansion coefficient | 0.12 | 0.1 | 0.13 | 0.1 |
As can be seen from Table 1, the magnesia carbon bricks added with calcium boride have similar properties as those without calcium boride, but the magnesia carbon bricks added with calcium boride have better oxidation resistance and high-temperature flexural strength than those without calcium boride.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will occur to those skilled in the art from consideration of the specification and practice of the invention without the need for inventive faculty, and are within the scope of the claims.
Claims (4)
1. The oxidation-resistant magnesia carbon brick is characterized by comprising the following components in parts by weight: 60-80 parts of fused magnesia particles, 10-20 parts of fused magnesia fine powder, 10-20 parts of graphite, 0.1-1 part of calcium boride, 0.1-1 part of boron carbide, 1-5 parts of phenolic resin and 0.1-1 part of urotropine.
2. An oxidation resistant magnesia carbon brick according to claim 1, wherein the fused magnesia particles comprise three sizes of magnesia particles, the three sizes being 5-3 mm, 3-1 mm, 1mm respectively.
3. An oxidation resistant magnesia carbon brick according to claim 1, wherein the fused magnesia fine powder has a particle size of 0.088mm or less.
4. The antioxidation magnesia carbon brick according to claim 1, wherein the weight part of the fused magnesia particles is 74 parts, the weight part of the fused magnesia fine powder is 11 parts, the weight part of the graphite is 15 parts, the weight part of the calcium boride is 0.2 part, the weight part of the boron carbide is 0.2 part, the weight part of the phenolic resin is 3 parts, and the weight part of the urotropin is 0.3 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310435582.5A CN116589288A (en) | 2023-04-21 | 2023-04-21 | Antioxidant magnesia carbon brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310435582.5A CN116589288A (en) | 2023-04-21 | 2023-04-21 | Antioxidant magnesia carbon brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116589288A true CN116589288A (en) | 2023-08-15 |
Family
ID=87605300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310435582.5A Pending CN116589288A (en) | 2023-04-21 | 2023-04-21 | Antioxidant magnesia carbon brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116589288A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9814205D0 (en) * | 1998-07-01 | 1998-08-26 | Foseco Int | Refactory compositions |
| KR19990059266A (en) * | 1997-12-30 | 1999-07-26 | 신승근 | High Magnesium-Carbon Refractory |
| CN101244940A (en) * | 2008-03-20 | 2008-08-20 | 郑州大学 | Metallic composite low carbon magnesium carbon brick for ladle slag wire and manufacture method thereof |
| CN101343188A (en) * | 2008-08-21 | 2009-01-14 | 武汉科技大学 | Low-carbon magnesium carbon brick and preparation thereof |
| CN102503497A (en) * | 2011-11-17 | 2012-06-20 | 江苏苏嘉集团新材料有限公司 | Environment-friendly low-carbon magnesium carbon brick |
| CN102653471A (en) * | 2011-03-01 | 2012-09-05 | 辽宁科技大学 | Method for producing magnesium carbon brick by using boron magnesium ore as additive |
| CN110981437A (en) * | 2019-12-05 | 2020-04-10 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick added with spinel calcium aluminate particles |
| CN111004042A (en) * | 2019-12-05 | 2020-04-14 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick using microcrystalline graphite |
-
2023
- 2023-04-21 CN CN202310435582.5A patent/CN116589288A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990059266A (en) * | 1997-12-30 | 1999-07-26 | 신승근 | High Magnesium-Carbon Refractory |
| GB9814205D0 (en) * | 1998-07-01 | 1998-08-26 | Foseco Int | Refactory compositions |
| CN101244940A (en) * | 2008-03-20 | 2008-08-20 | 郑州大学 | Metallic composite low carbon magnesium carbon brick for ladle slag wire and manufacture method thereof |
| CN101343188A (en) * | 2008-08-21 | 2009-01-14 | 武汉科技大学 | Low-carbon magnesium carbon brick and preparation thereof |
| CN102653471A (en) * | 2011-03-01 | 2012-09-05 | 辽宁科技大学 | Method for producing magnesium carbon brick by using boron magnesium ore as additive |
| CN102503497A (en) * | 2011-11-17 | 2012-06-20 | 江苏苏嘉集团新材料有限公司 | Environment-friendly low-carbon magnesium carbon brick |
| CN110981437A (en) * | 2019-12-05 | 2020-04-10 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick added with spinel calcium aluminate particles |
| CN111004042A (en) * | 2019-12-05 | 2020-04-14 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick using microcrystalline graphite |
Non-Patent Citations (3)
| Title |
|---|
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