CN108440001A - A kind of the converter body brick and its production method of addition titanium nitride - Google Patents
A kind of the converter body brick and its production method of addition titanium nitride Download PDFInfo
- Publication number
- CN108440001A CN108440001A CN201810201600.2A CN201810201600A CN108440001A CN 108440001 A CN108440001 A CN 108440001A CN 201810201600 A CN201810201600 A CN 201810201600A CN 108440001 A CN108440001 A CN 108440001A
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- titanium nitride
- converter body
- fine powder
- body brick
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- 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
-
- 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
- C04B2235/02—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
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/3886—Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride
-
- 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
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- 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 converter body brick of addition titanium nitride, is prepared by the raw material of following parts by weight：68 81 parts of fused magnesite particle, 10 12 parts of fused magnesite fine powder, 13 parts of boron fine powder of carbonization, 13 parts of titanium nitride 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 the converter body brick and its production method of addition titanium nitride, using the fused magnesite of variable grain grading as primary raw material, using phenolic resin as bonding agent, by the additive for adding boron carbide, titanium nitride, inoxidizability, the resistance to slag for improving converter body brick, make converter body 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.This product is on probation in certain steel mill's converter, and life of converter alreadys exceed 15000 heats, has good stability during use, does not find to crack, and do not influence steel quality.
Description
Technical field
The present invention relates to a kind of refractory material more particularly to a kind of the converter body bricks and its producer of addition titanium nitride
Method.
Background technology
Magnesia carbon brick is with high-melting-point alkalinity oxides magnesium (2800 DEG C of fusing point) and to be difficult to be invaded the high-melting-point of profit by clinker
Carbon materials add various non-oxidized substance additives as raw material.Carbon composite fire is not burnt with what carbonaceous bonding agent was combined into
Material.Magnesia carbon brick as a kind of composite refractory, efficiently utilize magnesia slag corrosion resistance ability is strong and the high heat conduction of carbon
Property and low expansion, compensate for the disadvantage of magnesia spalling resistance difference.Its main feature has：1 has good heat-resisting quantity
Energy；2 anti-slag abilities are strong；3 good thermal shocks；4 high-temerature creeps are low.Magnesia carbon brick is mainly used for converter, ac arc furnace, direct-current arc
The liner of stove, the positions such as slag line of ladle.
For converter body brick, during steel-making, oxygen decarburization is essential link.The oxidation of carbon is
The main reason for it is damaged.The oxidation of carbon can form decarburized layer, and in decarburized layer, institutional framework is loose, and stomata becomes larger, and makes slag
It is more easy to enter inside product with oxygen, further causes product damage.Therefore, antioxidant is added in converter body tile product
Product oxidation is prevented to be very important.
Invention content
The purpose of the present invention is to provide a kind of the converter body bricks and its production method of addition titanium nitride, with variable grain
The fused magnesite of grading is primary raw material, using phenolic resin as bonding agent, by adding the additive of boron carbide, titanium nitride, is carried
Inoxidizability, the resistance to slag of high converter body brick make converter body brick service life be significantly increased, to improve the refining of steel mill
Steel efficiency reduces steel-making cost, ensures steel-making quality and safety.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of converter body brick of addition titanium nitride, is prepared by the raw material of following parts by weight：Fused magnesite
68-81 parts of grain, 10-12 parts of fused magnesite fine powder, 1-3 parts of boron fine powder of carbonization, 1-3 parts of titanium nitride fine powder, crystalline flake graphite 10-13
Part, 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:34-38 parts；Less than the particle that 3mm is more than or equal to 1mm：18-23 parts；Particle less than 1mm：15-20 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 carbonization boron fine powder is 200 mesh, and the mass percent of chemical constituent is：B4C >=97.0%.
The grade of the titanium nitride fine powder is 200 mesh, and the mass percent of chemical constituent is：TiN >=98.0%
The bonding agent is phenolic resin.
A kind of production method of the converter body brick of addition titanium nitride, 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
Be slowly added to bonding agent, crystalline flake graphite mixing 1-2 minutes be added later, be eventually adding fused magnesite fine powder, be carbonized boron fine powder and
Titanium nitride fine powder discharges after mixing 20~30 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 the converter body brick and its production method of addition titanium nitride, the fused magnesite with variable grain grading is main
Raw material, by adding the additive of boron carbide, titanium nitride, improves the anti-oxidant of converter body brick using phenolic resin as bonding agent
Property, resistance to slag, so that converter body brick service life is significantly increased, to improve the steel-making efficiency of steel mill, reduce steel-making cost,
Ensure steel-making quality and safety.
This product is on probation in certain steel mill's converter, and life of converter alreadys exceed 15000 heats, and stability is good during use
It is good, it does not find to crack, and do not influence steel quality.
Specific implementation mode
The specific implementation mode of the present invention is described further below：
A kind of converter body brick of addition titanium nitride, is prepared by the raw material of following parts by weight：Fused magnesite
68-81 parts of grain, 10-12 parts of fused magnesite fine powder, 1-3 parts of boron fine powder of carbonization, 1-3 parts of titanium nitride fine powder, crystalline flake graphite 10-13
Part, 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:34-38 parts；Less than the particle that 3mm is more than or equal to 1mm：18-23 parts；Particle less than 1mm：15-20 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 carbonization boron fine powder is 200 mesh, and the mass percent of chemical constituent is：B4C >=97.0%.
The grade of the titanium nitride fine powder is 200 mesh, and the mass percent of chemical constituent is：TiN >=98.0%.
The bonding agent is phenolic resin, and the mass percent and index of chemical constituent are：Solid content >=80%, carbon residue
>=46%, free phenol≤10%, moisture≤3.0%, pH value 6~7.
A kind of production method of the converter body brick of addition titanium nitride, 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
Be slowly added to bonding agent, crystalline flake graphite mixing 1-2 minutes be added later, be eventually adding fused magnesite fine powder, be carbonized boron fine powder and
Titanium nitride fine powder discharges after mixing 20~30 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 grade 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 and mix 1-2 minutes, finally by fused magnesite fine powder, carbonization boron fine powder and nitridation
Titanium fine powder discharges after kneading being added together 20-30 minutes.
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 >=
0.1wt% ,≤0.5wt%.
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 converter body brick of addition titanium nitride of the present invention, main physical and chemical index are as follows：MgO >=75.0wt%；
Bulk density >=3.03g/cm after 200 DEG C of bakings3；Apparent porosity (200 DEG C × for 24 hours)≤4%；Compressive resistance (200 DEG C × for 24 hours) >=
40MPa；Linear change rate (1600 DEG C × 3h) 0~1.0%；High temperature break resistant intensity/MPa (1400 DEG C × 0.5h) >=14.
Claims (8)
1. a kind of converter body brick of addition titanium nitride, which is characterized in that be prepared by the raw material of following parts by weight：Electricity
68-81 parts of fused magnesia particle, 10-12 parts of fused magnesite fine powder, 1-3 parts of boron fine powder of carbonization, 1-3 parts of titanium nitride fine powder, scale stone
10-13 parts black, 2-4 parts of bonding agent.
2. a kind of converter body brick of addition titanium nitride according to claim 1, which is characterized in that the fused magnesite
Grain, 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:34-38 parts；It is less than
3mm is more than or equal to the particle of 1mm：18-23 parts；Particle less than 1mm：15-20 parts.
3. a kind of converter body brick of addition titanium nitride according to claim 1, which is characterized in that the fused magnesite is thin
The grade of powder is 200 mesh.
4. a kind of converter body brick of addition titanium nitride according to claim 1, which is characterized in that the crystalline flake graphite
Grade be 100 mesh, the mass percent of chemical constituent is：C >=94.0%.
5. a kind of converter body brick of addition titanium nitride according to claim 1, which is characterized in that the boron carbide is thin
The grade of powder is 200 mesh, and the mass percent of chemical constituent is：B4C >=97.0%.
6. a kind of converter body brick of addition titanium nitride according to claim 1, which is characterized in that the titanium nitride fine powder
Grade be 200 mesh, the mass percent of chemical constituent is：TiN >=98.0%.
7. a kind of converter body brick of addition titanium nitride according to claim 1, which is characterized in that the bonding agent is phenol
Urea formaldehyde.
8. it is a kind of claim 1-7 its any one of as described in addition titanium nitride converter body brick production method,
It is characterized in that, 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 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, carbonization boron fine powder and nitridation
Titanium fine powder discharges after mixing 20~30 minutes；
3) steam while dry-mixed fused magnesite granulated aggregate into batch mixing by 150 DEG C -370 DEG C, is passed through steam 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 |
|---|---|---|---|
| CN201810201600.2A CN108440001A (en) | 2018-03-12 | 2018-03-12 | A kind of the converter body brick and its production method of addition titanium nitride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810201600.2A CN108440001A (en) | 2018-03-12 | 2018-03-12 | A kind of the converter body brick and its production method of addition titanium nitride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108440001A true CN108440001A (en) | 2018-08-24 |
Family
ID=63194190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810201600.2A Pending CN108440001A (en) | 2018-03-12 | 2018-03-12 | A kind of the converter body brick and its production method of addition titanium nitride |
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Cited By (2)
| 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 |
| CN114180941A (en) * | 2022-02-15 | 2022-03-15 | 北京利尔高温材料股份有限公司 | Oxidation-resistant low-carbon magnesia carbon brick and preparation method thereof |
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| JPH07247160A (en) * | 1994-03-11 | 1995-09-26 | Mitsubishi Materials Corp | Magnesia-chromia-niobia-based baked firebrick having excellent slag erosion resistance |
| CN1844053A (en) * | 2006-04-27 | 2006-10-11 | 鞍山科技大学 | Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same |
| CN102584285A (en) * | 2012-01-31 | 2012-07-18 | 莱芜钢铁集团有限公司 | Magnesium-carbon material used for grate-layer material of rotary hearth furnaces and preparation method thereof |
| CN107311626A (en) * | 2017-07-18 | 2017-11-03 | 海城市中兴高档镁质砖有限公司 | A kind of magnesia carbon brick for adding aluminium nitride and preparation method thereof |
| CN107573038A (en) * | 2017-09-06 | 2018-01-12 | 江苏省冶金设计院有限公司 | Prepare the method and system of magnesia carbon brick |
-
2018
- 2018-03-12 CN CN201810201600.2A patent/CN108440001A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07247160A (en) * | 1994-03-11 | 1995-09-26 | Mitsubishi Materials Corp | Magnesia-chromia-niobia-based baked firebrick having excellent slag erosion resistance |
| CN1844053A (en) * | 2006-04-27 | 2006-10-11 | 鞍山科技大学 | Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same |
| CN102584285A (en) * | 2012-01-31 | 2012-07-18 | 莱芜钢铁集团有限公司 | Magnesium-carbon material used for grate-layer material of rotary hearth furnaces and preparation method thereof |
| CN107311626A (en) * | 2017-07-18 | 2017-11-03 | 海城市中兴高档镁质砖有限公司 | A kind of magnesia carbon brick for adding aluminium nitride and preparation method thereof |
| CN107573038A (en) * | 2017-09-06 | 2018-01-12 | 江苏省冶金设计院有限公司 | Prepare the method and system of magnesia carbon brick |
Cited By (2)
| 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 |
| CN114180941A (en) * | 2022-02-15 | 2022-03-15 | 北京利尔高温材料股份有限公司 | Oxidation-resistant low-carbon magnesia carbon brick and preparation method thereof |
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Application publication date: 20180824 |
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