CN106673679A - Magnesia carbon brick and preparation method thereof - Google Patents
Magnesia carbon brick and preparation method thereof Download PDFInfo
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- CN106673679A CN106673679A CN201611236533.5A CN201611236533A CN106673679A CN 106673679 A CN106673679 A CN 106673679A CN 201611236533 A CN201611236533 A CN 201611236533A CN 106673679 A CN106673679 A CN 106673679A
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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
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- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6316—Binders based on silicon compounds
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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
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
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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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
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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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
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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
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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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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- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a magnesia carbon brick and a preparation method thereof. The magnesia carbon brick is prepared from components in parts by weight as follows: 60-85 parts of fused magnesia particles, 10-35 parts of fused magnesia fine powder, 1-20 parts of carbon, 1-5 parts of an antioxidant and 1-6 parts of a binder. During preparation, firstly, the fused magnesia particles are placed in a revolving motion circulating type mixing mill for dry mixing for 2-15 min, then the binder is added, the materials are mixed continuously for 2-15 min, carbon is added, the materials are mixed for 2-15 min, finally, the fused magnesia fine powder and the antioxidant are added, the materials are mixed for 8-15 min, and pug is formed; the novel bound magnesia carbon brick is obtained after compression molding and baking. The preparation method is simple and easy to operate; the produced novel magnesia carbon brick has the advantages that pollutant emission is reduced, harm to health of a production worker is reduced, the binder silica sol used in the production process cannot volatilize harmful substances, original performance of the magnesia carbon brick bound with phenolic resin is kept, and the magnesia carbon brick has excellent erosion resistance and thermal shock resistance.
Description
Technical field
The present invention relates to a kind of magnesia carbon brick and preparation method thereof, the magnesia carbon brick that especially a kind of employing Ludox is combined, category
In technical field of fire-resistant material preparation.
Background technology
The fusing point of magnesium oxide is 2800 DEG C, and with very strong heat-resisting ability, but its thermal shock resistance, slag penetration resistance are poor；
Carbon materials with graphite as representative also has very strong heat-resisting ability, and its thermal coefficient of expansion is low, and thermal shock resistance is very
It is excellent, it is difficult infiltration with molten steel, slag at high temperature, the two is combined according to a certain percentage, constitute a kind of good combination property
Refractory material-magnesia carbon brick.Magnesia carbon brick is due to its excellent corrosion resistance and thermal shock resistance, the so far still conduct on all kinds of converters
Furnace lining material is widely used, for example converter, steel-smelting electric furnace, ladle.
Bonding agent is the key component of magnesia carbon brick, and magnesia carbon brick now still adopts phenolic resin binder.Phenolic resin
Bonding agent contains poisonous and hazardous material, either there is inevitable ring in the production process of bonding agent or magnesia carbon brick
Border is polluted, and has certain injury to producing workers ' health.
Ludox is dispersion liquid of the nano level silica dioxide granule in water or in solvent, belongs to colloid solution, odorless, nothing
Poison, with cohesive force is strong, high temperature resistant the features such as, be the excellent combination agent of semidry method mechanical pressing refractory material, while molten with silicon
The carbon product of cementing conjunction, it is possible to reduce the loss produced because of surface oxidation, improves the service life of refractory material.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of magnesia carbon brick and preparation method thereof, should
Magnesia carbon brick is combined using Ludox, can avoid the environmental pollution and health hazards of phenolic resin binder generation.
According to the technical scheme that the present invention is provided, the magnesia carbon brick is characterized in that, including following component, and component ratio is pressed
Parts by weight meter：60~85 parts of fused magnesite granule, 10~35 parts of fused magnesite fine powder, 1~20 part of carbon, antioxidant 1~5
1~6 part of part and bonding agent.
Further, the particle diameter of the fused magnesite granule is 1~8mm, and content of MgO is more than 97wt.%.
Further, the fused magnesite powder particle size is less than 0.1mm, and content of MgO is more than 97wt.%.
Further, the carbon is graphite, and the granularity of graphite is 350~400 mesh, and carbon content is more than in graphite
94%.
Further, the antioxidant is the one kind in aluminium powder, Al-Mg alloy powder, metallic silicon power, carborundum, boron carbide
Or it is various.
Further, the bonding agent be Ludox, SiO2Content is 25%~30%, and density is 1.1~1.8g/cm3。
The preparation method of the magnesia carbon brick, it is characterised in that comprise the steps, component ratio by mass number meter：
(1) knead：Weigh 60~85 parts of fused magnesite granule, 10~35 parts of fused magnesite fine powder, 1~20 part of carbon, anti-
1~6 part of 1~5 part of oxidant and bonding agent；Fused magnesite granule is placed in kneading machine first carry out dry-mixed 2~15min, connects
Addition bonding agent continue mix 2~15min, be subsequently adding carbon mix 2~15min, be eventually adding fused magnesite fine powder and
Antioxidant mixes 8~15min and forms pug, and kneading machine rotating speed is 950~1000r/min；
(2) it is compressing：Pug is pressed and makes adobe, briquetting pressure is 100-250MPa, vacuum for-
70~-75KPa, cycle 9~10 times；
(3) toast：Adobe is toasted, baking temperature is 150~300 DEG C, baking time is 10~20h.
Further, the circulating kneading machine of rotation shifting is kneaded used in the step (1).
Further, compound type vacuum friction press is pressed to pug used in the step (2).
Further, toasted using tunnel drying oven in the step (3).
Preparation method of the present invention is simple, and preparation method is easily operated, and the new magnesia carbon brick of production reduces the row of pollutant
Put, reduce the health hazards of direct labor, the bonding agent Ludox that it is used in process of production will not volatilize harmful
Material, maintains the original performance of magnesia carbon brick of phenolic resin combination, with excellent corrosion resistance and thermal shock resistance.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment one：A kind of magnesia carbon brick, including component is calculated by weight as：75 parts of fused magnesite granule, fused magnesite
17 parts of fine powder, 3 parts of carbon, 1 part of antioxidant aluminium powder, 4 parts of Ludox.
The preparation method of the magnesia carbon brick, comprises the steps：
(1) knead：Move circulating kneading machine using rotation to be kneaded, by proportioning weigh respectively raw material fused magnesite granule,
Fused magnesite fine powder, carbon, antioxidant aluminium powder and Ludox, are placed in fused magnesite granule rotation and move circulating kneading machine first
In carry out dry-mixed 5min, be subsequently adding Ludox continue mix 8min, be subsequently adding carbon mixing 8min, be eventually adding electric-melting magnesium
Sand fine powder and antioxidant aluminium powder mixing 8min form pug, and kneading machine rotating speed is 970r/min.
(2) it is compressing：Pug is pressed using compound type vacuum friction press makes adobe, molding pressure
Power is 150MPa, and vacuum is -75KPa, cycle 9 times；
(3) toast：Adobe is placed in tunnel drying oven carries out toasting the magnesia carbon brick for obtaining new combination, and tunnel type is done
The baking temperature of dry kiln is 300 DEG C, and baking time is 15h.
Embodiment two：A kind of magnesia carbon brick, including component is calculated by weight as：79 parts of fused magnesite granule, fused magnesite
12 parts of fine powder, 4 parts of carbon, 2 parts of antioxidant aluminium powder, 3 parts of Ludox.
The preparation method of the magnesia carbon brick, comprises the steps
(1) knead：Move circulating kneading machine using rotation to be kneaded, by proportioning weigh respectively raw material fused magnesite granule,
Fused magnesite fine powder, carbon, antioxidant aluminium powder and Ludox, are placed in fused magnesite granule rotation and move circulating kneading machine first
In carry out dry-mixed 8min, be subsequently adding Ludox continue mix 10min, be subsequently adding carbon mixing 12min, be eventually adding electric smelting
Magnesia powder and antioxidant aluminium powder mixing 12min form pug, and kneading machine rotating speed is 980r/min.
(2) it is compressing：Pug is pressed using compound type vacuum friction press makes adobe, molding pressure
Power is 200MPa, and vacuum is -70KPa, cycle 10 times；
(3) toast：Adobe is placed in tunnel drying oven carries out toasting the magnesia carbon brick for obtaining new combination, and tunnel type is done
The baking temperature of dry kiln is 200 DEG C, and baking time is 20h.
Embodiment three：A kind of magnesia carbon brick, including component is calculated by weight as：80 parts of fused magnesite granule, fused magnesite
10 parts of fine powder, 2 parts of carbon, 3 parts of antioxidant metallic silicon power, 5 parts of Ludox.
The preparation method of the magnesia carbon brick, comprises the steps：
(1) knead：Move circulating kneading machine using rotation to be kneaded, by proportioning weigh respectively raw material fused magnesite granule,
Fused magnesite fine powder, carbon, antioxidant metallic silicon power and Ludox, are placed in fused magnesite granule rotation and move circulating mixed first
Dry-mixed 10min is carried out in mill, Ludox is subsequently adding and is continued to mix 12min, be subsequently adding carbon mixing 12min, finally added
Enter fused magnesite fine powder and antioxidant metallic silicon power mixing 15min forms pug, kneading machine rotating speed is 990r/min.
(2) it is compressing：Pug is pressed using compound type vacuum friction press makes adobe, molding pressure
Power is 250MPa, and vacuum is -70KPa, cycle 9 times；
(3) toast：Adobe is placed in tunnel drying oven carries out toasting the magnesia carbon brick for obtaining new combination, and tunnel type is done
The baking temperature of dry kiln is 250 DEG C, and baking time is 20h.
Example IV：A kind of magnesia carbon brick, including component is calculated by weight as：60 parts of fused magnesite granule, fused magnesite
35 parts of fine powder, 2 parts of carbon, 2 parts of antioxidant Al-Mg alloy powder, 1 part of Ludox.
The preparation method of the magnesia carbon brick, comprises the steps：
(1) knead：Move circulating kneading machine using rotation to be kneaded, by proportioning weigh respectively raw material fused magnesite granule,
Fused magnesite fine powder, carbon, antioxidant Al-Mg alloy powder and Ludox, are placed in fused magnesite granule rotation and move circulating first
Dry-mixed 5min is carried out in kneading machine, Ludox is subsequently adding and is continued to mix 5min, be subsequently adding carbon mixing 8min, be eventually adding
Fused magnesite fine powder and antioxidant Al-Mg alloy powder mixing 10min form pug, and kneading machine rotating speed is 980r/min.
(2) it is compressing：Pug is pressed using compound type vacuum friction press makes adobe, molding pressure
Power is 150MPa, and vacuum is -70KPa, cycle 9 times；
(3) toast：Adobe is placed in tunnel drying oven carries out toasting the magnesia carbon brick for obtaining new combination, and tunnel type is done
The baking temperature of dry kiln is 200 DEG C, and baking time is 15h.
Embodiment five：A kind of magnesia carbon brick, including component is calculated by weight as：85 parts of fused magnesite granule, fused magnesite
1 part of 11 parts of fine powder, 1 part of carbon, antioxidant metallic silicon power and carborundum, 2 parts of Ludox.
The preparation method of the magnesia carbon brick, comprises the steps：
(1) knead：Move circulating kneading machine using rotation to be kneaded, by proportioning weigh respectively raw material fused magnesite granule,
Fused magnesite fine powder, carbon, antioxidant metallic silicon power and carborundum, Ludox, are placed in fused magnesite granule rotation and move first
Dry-mixed 2min is carried out in circulating kneading machine, Ludox is subsequently adding and is continued to mix 15min, be subsequently adding carbon mixing 2min,
It is eventually adding fused magnesite fine powder and antioxidant metallic silicon power and carborundum mixing 15min forms pug, kneading machine rotating speed is
950r/min。
(2) it is compressing：Pug is pressed using compound type vacuum friction press makes adobe, molding pressure
Power is 100MPa, and vacuum is -75KPa, cycle 9 times；
(3) toast：Adobe is placed in tunnel drying oven carries out toasting the magnesia carbon brick for obtaining new combination, and tunnel type is done
The baking temperature of dry kiln is 150 DEG C, and baking time is 20h.
Embodiment six：A kind of magnesia carbon brick, including component is calculated by weight as：70 parts of fused magnesite granule, fused magnesite
14 parts of fine powder, 5 parts of carbon, 5 parts of antioxidant boron carbide, 6 parts of Ludox.
The preparation method of the magnesia carbon brick, comprises the following steps：
(1) knead：Move circulating kneading machine using rotation to be kneaded, by proportioning weigh respectively raw material fused magnesite granule,
Fused magnesite fine powder, carbon, antioxidant boron carbide and Ludox, are placed in fused magnesite granule rotation and move circulating mixing first
Dry-mixed 15min is carried out in machine, Ludox is subsequently adding and is continued to mix 2min, be subsequently adding carbon mixing 15min, be eventually adding electricity
Fused magnesia fine powder and antioxidant boron carbide mixing 8min form pug, and kneading machine rotating speed is 1000r/min.
(2) it is compressing：Pug is pressed using compound type vacuum friction press makes adobe, molding pressure
Power is 250MPa；
(3) toast：Adobe is placed in tunnel drying oven carries out toasting the magnesia carbon brick for obtaining new combination, and tunnel type is done
The baking temperature of dry kiln is 300 DEG C, and baking time is 10h.
Comparative example：It is identical with the magnesia carbon brick raw material components of new combination in example one, will wherein bonding agent phenolic resin
Replace, by same preparation method magnesia carbon brick is made, carry out performance detection contrast.
According to GB/T2997---2000, GB/T5072.2---2004, GB/T3001---2000, GB/T3002---
2004th, GB/T 7320.1-2000 detect to embodiment one and comparative example, detect sample apparent porosity and bulk density,
Cold crushing strength, strength at normal temperature, high temperature break resistant intensity and linear expansivity.
Thermal shock resistance is tested：Thermal shock resistance test is carried out to embodiment one and comparative example, by embodiment one and comparative example system
Into the sample of 40mm × 40mm × 160mm, after being heated to 1100 DEG C of insulation 30min, take out sample and be put into rapidly in room temperature water suddenly
It is cold, repeat above procedure to sample fracture, number of repetition is recorded, with the thermal shock resistance that number of times evaluates sample.
Corrosion resistance is tested：Corrosion resistance test is carried out to embodiment one and comparative example, by embodiment one and comparative example system
Into crucible specimen sizeHole size isTested using static anti-erosion
Method, loads 20g ladle slags in crucible sample, under being placed in buried charcoal atmosphere, at 1500 DEG C 3h is incubated.By crucible after furnace cooling
Cut along short transverse, measure crucible central cross-section and invades (infiltration) area S, (S0 is to calculate its erosion index S/S0 × 100%
The sectional area of former crucible centre bore), to evaluate the corrosion resistance of sample.
Properties detection data is as shown in table 1：
Table 1
As shown in Table 1, the properties of the magnesia carbon brick of new combination are above the magnesium of phenolic resin combination under similarity condition
Carbon brick, the magnesia carbon brick of new combination has preferable thermal shock resistance and the anti-folding of strength at normal temperature, cold crushing strength and high temperature
Intensity, therefore be to substitute the novel refractory that phenolic resin combines magnesia carbon brick.
The present invention relates to a kind of magnesia carbon brick of new combination and preparation method thereof, including component percentage is：
Fused magnesite granule 60~85%, fused magnesite fine powder 10~35%, carbon 1~20%, antioxidant 1~5%, bonding agent
(Ludox) 1~6%.In preparation process first by fused magnesite granule be placed in rotation move carry out dry-mixed 2 in circulating kneading machine~
15min, is subsequently adding bonding agent (Ludox) and continues to mix 2~15min, is subsequently adding carbon and mixes 2~15min, finally adds
Enter fused magnesite fine powder and antioxidant mixes 8~15min and forms pug, kneading machine rotating speed is 950~1000r/min, then
The magnesia carbon brick of new combination is obtained after compressing and baking.Preparation method of the present invention is simple, and preparation method is easily operated,
The new magnesia carbon brick of production reduces the discharge of pollutant, reduces the health hazards of direct labor, its institute in process of production
The bonding agent Ludox for using will not volatilize harmful substance, maintain the original performance of magnesia carbon brick of phenolic resin combination,
With excellent corrosion resistance and thermal shock resistance.
Claims (10)
1. a kind of magnesia carbon brick, is characterized in that, including following component, component ratio by mass number meter：Fused magnesite granule 60~
1~6 part of 85 parts, 10~35 parts of fused magnesite fine powder, 1~20 part of carbon, 1~5 part of antioxidant and bonding agent.
2. magnesia carbon brick as claimed in claim 1, is characterized in that：The particle diameter of the fused magnesite granule be 1~8mm, content of MgO
More than 97wt.%.
3. magnesia carbon brick as claimed in claim 1, is characterized in that：The fused magnesite powder particle size is less than 0.1mm, content of MgO
More than 97wt.%.
4. magnesia carbon brick as claimed in claim 1, is characterized in that：The carbon is graphite, and the granularity of graphite is 350~400
Mesh, carbon content is more than 94% in graphite.
5. magnesia carbon brick as claimed in claim 1, is characterized in that：The antioxidant is aluminium powder, Al-Mg alloy powder, metallic silicon
One or more in powder, carborundum, boron carbide.
6. magnesia carbon brick as claimed in claim 1, is characterized in that：The bonding agent be Ludox, SiO2Content is 25%~30%,
Density is 1.1~1.8 g/cm3。
7. a kind of preparation method of magnesia carbon brick, it is characterised in that comprise the steps, component ratio by mass number meter：
（1）Mixing：Weigh 60~85 parts of fused magnesite granule, 10~35 parts of fused magnesite fine powder, 1~20 part of carbon, antioxidation
1~6 part of 1~5 part of agent and bonding agent；Fused magnesite granule is placed in kneading machine first carry out dry-mixed 2~15min, then adds
Enter bonding agent to continue to mix 2~15min, be subsequently adding carbon and mix 2~15min, be eventually adding fused magnesite fine powder and antioxygen
Agent mixes 8~15min and forms pug, and kneading machine rotating speed is 950~1000 r/min；
（2）It is compressing：Pug is pressed and makes adobe, briquetting pressure is 100-250MPa, vacuum is -70
~-75KPa, cycle 9~10 times；
（3）Baking：Adobe is toasted, baking temperature is 150~300 DEG C, baking time is 10~20h.
8. the preparation method of magnesia carbon brick as claimed in claim 7, is characterized in that：The step（1）Used in rotation move it is circulating
Kneading machine is kneaded.
9. the preparation method of magnesia carbon brick as claimed in claim 7, is characterized in that：The step（2）Used in compound type vacuum
Friction press is pressed to pug.
10. the preparation method of magnesia carbon brick as claimed in claim 7, is characterized in that：The step（3）Middle employing tunnel type is dried
Kiln is toasted.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN107324824A (en) * | 2017-07-18 | 2017-11-07 | 海城市中兴高档镁质砖有限公司 | A kind of BOF Hood tar combination magnesia-alumina brick and preparation method thereof |
| CN107954697A (en) * | 2017-11-22 | 2018-04-24 | 海城利尔麦格西塔材料有限公司 | A kind of magnesia carbon brick for adding boron carbide and preparation method thereof |
| CN108101559A (en) * | 2017-12-29 | 2018-06-01 | 江苏苏嘉集团新材料有限公司 | magnesia carbon brick and preparation method thereof |
| CN108147792A (en) * | 2017-12-29 | 2018-06-12 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick that a kind of water combines and preparation method thereof |
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| CN102503496A (en) * | 2011-11-17 | 2012-06-20 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon pouring material |
| CN103724026A (en) * | 2013-12-30 | 2014-04-16 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon-based castable |
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