CN107805055A - A kind of ladle gunning refractory for adding calcium boride and preparation method thereof - Google Patents
A kind of ladle gunning refractory for adding calcium boride and preparation method thereof Download PDFInfo
- Publication number
- CN107805055A CN107805055A CN201711170473.6A CN201711170473A CN107805055A CN 107805055 A CN107805055 A CN 107805055A CN 201711170473 A CN201711170473 A CN 201711170473A CN 107805055 A CN107805055 A CN 107805055A
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- CN
- China
- Prior art keywords
- magnesia
- ladle
- calcium boride
- gunning refractory
- parts
- 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.)
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Classifications
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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
- C04B35/03—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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
-
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
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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 relates to a kind of ladle gunning refractory for adding calcium boride and preparation method thereof, the ladle gunning refractory includes the component of following parts by weight：0 ＞ granularities >=1mm 25~52 parts of magnesia, 25~52 parts of 1mm ＞ granularities >=3mm magnesia, granularity are 18~28 parts of the magnesia of 200 mesh, 1~2 part of calcium boride, 0.5~5 part of 50 cement of CA, 0.5~5 part of bentonite, 1~8 part of sodium metasilicate, 0.5~7 part of modified pitch.Ladle gunning refractory prepared by the present invention has good inoxidizability and resistance to flaking, and good fluidity, and service life is high, and the ladle for being more suitable for maximization uses.
Description
Technical field
The present invention relates to technical field of refractory materials, more particularly to a kind of ladle gunning refractory for adding calcium boride and its preparation
Method.
Background technology
In recent years, China's steel-smelting technology has new development.First, in order to improve production efficiency, ladle is towards maximization side
To development, more than 90 tons of ladle quantity increases sharply；Second, higher quality is proposed to high-purity, high cleanliness steel
It is required that double refining handling rate of the molten steel in ladle is also increasing, this is resulted in, and tapping temperature improves and molten steel is in ladle
The time lengthening of delay.These changes all make the use condition of ladle harsher, and the damage of refractory material constantly expands, especially
It is unbalanced deteriorate be present.In order to improve the service life of ladle, cost is reduced, mitigates labor strength, to for ladle
The alkaline gunning refractory of modular repair carry out deeply, systematic research it is imperative.
The content of the invention
The invention provides a kind of ladle gunning refractory for adding calcium boride and preparation method thereof, prepared ladle gunning refractory
With good inoxidizability and resistance to flaking, and good fluidity, service life height, the ladle for being more suitable for maximization use.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of ladle gunning refractory for adding calcium boride, include the component of following parts by weight：
0 ＞ granularities >=1mm 25~52 parts of magnesia, 25~52 parts of 1mm ＞ granularities >=3mm magnesia, granularity are 200 purposes
18~28 parts of magnesia, 1~2 part of calcium boride, 0.5~5 part of CA-50 cement, 0.5~5 part of bentonite, 1~8 part of sodium metasilicate are modified
0.5~7 part of pitch.
The magnesia is fused magnesite, and its physical and chemical index is by mass percentage：MgO >=91%, CaO≤2.0%, SiO2
≤ 4.5%, Fe2O3≤ 1.1%, bulk density >=3.15g/cm3。
The sodium metasilicate, modified pitch are as bonding agent.
A kind of preparation method for the ladle gunning refractory for adding calcium boride, comprises the following steps：
1) each component is weighed by weight ratio standby；
2) 0 ＞ granularities >=1mm magnesia and 1mm ＞ granularities >=3mm magnesia are first added into mixer, dry-mixed 3~
5min, calcium boride, CA-50 cement, bentonite, sodium metasilicate and modified pitch are then respectively adding, 3~5min of batch mixing, is finally added
Enter the magnesia of 200 mesh, 4~6min of batch mixing, discharging, produce ladle gunning refractory.
Compared with prior art, the beneficial effects of the invention are as follows：
1) the ladle gunning refractory prepared by has good inoxidizability and resistance to flaking, and good fluidity, service life
Height, the ladle for being more suitable for maximization use；
2) preparation method is simple.
Embodiment
A kind of ladle gunning refractory for adding calcium boride of the present invention, include the component of following parts by weight：
0 ＞ granularities >=1mm 25~52 parts of magnesia, 25~52 parts of 1mm ＞ granularities >=3mm magnesia, granularity are 200 purposes
18~28 parts of magnesia, 1~2 part of calcium boride, 0.5~5 part of CA-50 cement, 0.5~5 part of bentonite, 1~8 part of sodium metasilicate are modified
0.5~7 part of pitch.
The magnesia is fused magnesite, and its physical and chemical index is by mass percentage：MgO >=91%, CaO≤2.0%, SiO2
≤ 4.5%, Fe2O3≤ 1.1%, bulk density >=3.15g/cm3。
The sodium metasilicate, modified pitch are as bonding agent.
A kind of preparation method for the ladle gunning refractory for adding calcium boride, comprises the following steps：
3) each component is weighed by weight ratio standby；
4) 0 ＞ granularities >=1mm magnesia and 1mm ＞ granularities >=3mm magnesia are first added into mixer, dry-mixed 3~
5min, calcium boride, CA-50 cement, bentonite, sodium metasilicate and modified pitch are then respectively adding, 3~5min of batch mixing, is finally added
Enter the magnesia of 200 mesh, 4~6min of batch mixing, discharging, produce ladle gunning refractory.
Calcium boride is a kind of anti-oxidant as white clouds coal and conite charcoal refractory material, anti-erosion and is improved hot
The boron-containing additive of intensity.Its structure is the knot common to six boron compounds such as AB6 and RB6 (A represents alkaline earth, and R represents rare earth)
Structure, it is CsCl structures, is a difference in that B6 octahedrons instead of Cs position, due to the covalent bond between B-B there is strength,
Therefore the characteristics of its fusing point is high, and hardness is big is caused.And there is anti-oxidant, heat shock resistance and erosion-resistant characteristic.It is added into
In ladle gunning refractory, the service life of ladle can be effectively improved.
Following examples are implemented under premised on technical solution of the present invention, give detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
It is conventional method not mentionlet alone bright.
【Embodiment 1-3】
In embodiment 1-3, a kind of compositing formula for the ladle gunning refractory for adding calcium boride is as shown in table 1：
(the unit of table 1：Parts by weight)
| Dispensing | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| 1~3mm magnesia | 25 | 35 | 50 |
| 0~1mm magnesia | 30 | 45 | 52 |
| 200 mesh magnesia | 18 | 22 | 26 |
| Calcium boride | 2 | 1.5 | 1 |
| Sodium metasilicate | 1 | 4 | 8 |
| Bentonite | 1.5 | 3 | 4.5 |
| CA-50 cement | 0.5 | 1.5 | 3.5 |
| Modified pitch | 1 | 3 | 7 |
A kind of preparation method for the ladle gunning refractory for adding calcium boride, comprises the following steps described in embodiment 1-3：
1) each component is weighed according to above-mentioned parts by weight standby；
2) first add 1~3mm, the magnesia of 0~1mm granularities into mixer, dry-mixed 3min, then add calcium boride, CA-50
Cement, bentonite, sodium metasilicate, modified pitch, batch mixing 5min adds 200 mesh (granularity ＜ 0.074mm) magnesia powder, then mixes
Expect 6min, discharge and produce ladle gunning refractory.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (4)
1. a kind of ladle gunning refractory for adding calcium boride, it is characterised in that include the component of following parts by weight：
0 ＞ granularities >=1mm 25~52 parts of magnesia, 25~52 parts of 1mm ＞ granularities >=3mm magnesia, granularity are the magnesia of 200 mesh
18~28 parts, 1~2 part of calcium boride, 0.5~5 part of CA-50 cement, 0.5~5 part of bentonite, 1~8 part of sodium metasilicate, modified pitch
0.5~7 part.
2. a kind of ladle gunning refractory for adding calcium boride according to claim 1, it is characterised in that the magnesia is electric smelting
Magnesia, its physical and chemical index are by mass percentage：MgO >=91%, CaO≤2.0%, SiO2≤ 4.5%, Fe2O3≤ 1.1%, body
Product density >=3.15g/cm3。
3. a kind of ladle gunning refractory for adding calcium boride according to claim 1, it is characterised in that the sodium metasilicate, change
Property pitch is as bonding agent.
4. the preparation method of a kind of ladle gunning refractory for adding calcium boride as claimed in claim 1, it is characterised in that including such as
Lower step：
1) each component is weighed by weight ratio standby；
2) 0 ＞ granularities >=1mm magnesia and 1mm ＞ granularities >=3mm magnesia are first added into mixer, dry-mixed 3~5min, so
After be separately added into calcium boride, CA-50 cement, bentonite, sodium metasilicate and modified pitch, 3~5min of batch mixing, be eventually adding 200 mesh
Magnesia, 4~6min of batch mixing, discharging, produce ladle gunning refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170473.6A CN107805055A (en) | 2017-11-22 | 2017-11-22 | A kind of ladle gunning refractory for adding calcium boride and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170473.6A CN107805055A (en) | 2017-11-22 | 2017-11-22 | A kind of ladle gunning refractory for adding calcium boride and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107805055A true CN107805055A (en) | 2018-03-16 |
Family
ID=61580742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711170473.6A Pending CN107805055A (en) | 2017-11-22 | 2017-11-22 | A kind of ladle gunning refractory for adding calcium boride and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107805055A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106518110A (en) * | 2016-11-03 | 2017-03-22 | 海城市中兴镁质合成材料有限公司 | Gunning mix using magnesia-calcium residual bricks as raw material and preparing method thereof |
| CN106966739A (en) * | 2017-04-01 | 2017-07-21 | 海城市中兴镁质合成材料有限公司 | A kind of RH gunning refractories of improvement |
| CN107285751A (en) * | 2017-07-27 | 2017-10-24 | 苏州诺瑞达新材料科技有限公司 | A kind of long-life iron runner castable |
-
2017
- 2017-11-22 CN CN201711170473.6A patent/CN107805055A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106518110A (en) * | 2016-11-03 | 2017-03-22 | 海城市中兴镁质合成材料有限公司 | Gunning mix using magnesia-calcium residual bricks as raw material and preparing method thereof |
| CN106966739A (en) * | 2017-04-01 | 2017-07-21 | 海城市中兴镁质合成材料有限公司 | A kind of RH gunning refractories of improvement |
| CN107285751A (en) * | 2017-07-27 | 2017-10-24 | 苏州诺瑞达新材料科技有限公司 | A kind of long-life iron runner castable |
Non-Patent Citations (1)
| Title |
|---|
| 宋玉龙等: "添加硼化钙对镁钙碳耐火材料抗氧化性能的影响", 《工业加热》 * |
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Application publication date: 20180316 |
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