CN106810210A - Improve magnesia carbon brick of antioxidant and preparation method thereof - Google Patents
Improve magnesia carbon brick of antioxidant and preparation method thereof Download PDFInfo
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- CN106810210A CN106810210A CN201611246019.XA CN201611246019A CN106810210A CN 106810210 A CN106810210 A CN 106810210A CN 201611246019 A CN201611246019 A CN 201611246019A CN 106810210 A CN106810210 A CN 106810210A
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- 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
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- 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
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- C04B2235/40—Metallic constituents or additives not added as binding phase
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- 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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- 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
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Abstract
The present invention relates to a kind of magnesia carbon brick for improving antioxidant and preparation method thereof, including following component, count by weight：60~85 parts of fused magnesite particle, 10~30 parts of fused magnesite fine powder, 1~10 part of carbon, 1~5 part of antioxidant and phenolic resin 1~6%.First being placed in fused magnesite particle in preparation process carries out dry-mixed 2~15min in kneading machine, phenolic resin is subsequently adding to continue to mix 5~15min, it is subsequently adding carbon and mixes 2~15min, it is eventually adding fused magnesite fine powder and antioxidant mixes 8~15min and forms pug, kneading machine rotating speed is 950~1000 r/min, then by obtaining magnesia carbon brick after compressing and baking.Preparation method of the present invention is simple, preparation method is easily operated, employ new antioxidant antiflaming magnesium alloy powder, both the excellent antioxygenic property of metal magnesium powder had been maintained, the problem of metal magnesium powder self-firing and self-explosion in use is prevented again, the service life of magnesia carbon brick is improve, while reducing the production cost of magnesia carbon brick.
Description
Technical field
The present invention relates to a kind of magnesia carbon brick for improving antioxidant and preparation method thereof, belong to refractory material technology of preparing neck
Domain.
Background technology
Magnesia carbon brick is with high-melting-point alkalescence oxides magnesium (2800 DEG C of fusing point) and the high-melting-point for being difficult to be invaded by slag profit
Carbon materials adds various non-oxidized substance additives, the composite fire of not making charcoal being combined into carbonaceous bonding agent as raw material
Material.Magnesia carbon brick is widely used in the liner position of steel-making blast furnace, electric furnace, converter, refining furnace continuous casting system and ladle.
Magnesia carbon brick is led as a kind of composite refractory, strong and carbon the height of slag corrosion resistance ability for efficiently utilizing magnesia
Hot and low expansion, compensate for the disadvantage of magnesia spalling resistance difference.Its main feature has：1st, with good high temperature resistant
Performance；2nd, anti-slag ability is strong；3rd, good thermal shock；4th, high-temerature creep is low.
The premium properties of magnesia carbon brick depends on the presence of carbon in brick, and to easily cause product tissue bad for the oxidation of carbon during use
Change, in making slag along gap intrusion brick, corrode magnesium oxide particle, reduce the service life of magnesia carbon brick.
The current main inoxidizability by adding the means of antioxidant to improve magnesia carbon brick.It is anti-oxidant due to adding
Agent, it is therefore prevented that the oxidation of carbon, while promoting the further densification of institutional framework so that the high temperature break resistant intensity of magnesia carbon brick,
Inoxidizability and corrosion resistance are greatly improved, so as to improve the service life of magnesia carbon brick.The antioxidant for using now is usual
It is the metallic addition that oxidation is easier than carbon, such as Al, Mg, Ca, Si and carbide.
Content of magnesium is higher, and the corrosion resistance of magnesia carbon brick is better, and China magnesium reserves very abundant, rank first in the world,
Magnesium yield is also the first in the world, and metal magnesium powder cost is relatively cheap, thus metal magnesium powder should magnesia carbon brick be best suitable for
Antioxidant.But in magnesia carbon brick, antioxidant does not use metal magnesium powder with low cost substantially, and main cause is metal magnesium powder
Activity is better than other metals, and self-firing and self-explosion is susceptible in use.
Antiflaming magnesium alloy powder is exactly that a small amount of other metallic elements (such as manganese, zinc, zirconium and rare earth) system is added in magnesium metal
The activity of metal magnesium powder is reduced into magnesium alloy powder, the ignition point of metal magnesium powder is improved, metal magnesium powder spontaneous combustion is prevented so as to reach
The purpose of self-destruction.
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 of raising antioxidant and
Its preparation method, using antiflaming magnesium alloy powder as the novel antioxidant of magnesia carbon brick, improves the inoxidizability of magnesia carbon brick, so that
The service life of magnesia carbon brick is improved, while reducing the production cost of magnesia carbon brick.
According to the technical scheme that the present invention is provided, the magnesia carbon brick of the raising antioxidant, it is characterized in that, including with the following group
Part, component is counted by weight：It is 60~85 parts of fused magnesite particle, 10~30 parts of fused magnesite fine powder, 1~10 part of carbon, anti-
1~6 part of 1~5 part of oxidant and phenolic resin.
Further, the particle diameter of the fused magnesite particle is 1~8mm, and content of MgO is more than 97wt.%.
Further, the granularity of the fused magnesite fine powder is less than 0.1mm, and content of MgO is more than 97wt.%.
Further, the carbon is graphite, and the granularity of graphite is 300~400 mesh, and carbon content is more than 94% in graphite.
Further, the antioxidant is antiflaming magnesium alloy powder.
Further, the antiflaming magnesium alloy powder composition is：80% magnesium metal, 10% manganese metal and 10% metallic zinc, grain
It is 200 mesh to spend.
The preparation method of the magnesia carbon brick for improving antioxidant, it is characterized in that, comprising the following steps, component ratio is by weight
Amount number meter：
(1) knead：Weigh respectively 60~85 parts of fused magnesia particle, 10~30 parts of fused magnesite fine powder, 1~10 part of carbon,
1~6 part of 1~5 part of antioxidant and phenolic resin, carry out dry-mixed 2~15min by fused magnesite particle first, are subsequently adding phenol
Urea formaldehyde continues to mix 5~15min, is subsequently adding carbon and mixes 2~15min, is eventually adding fused magnesite fine powder and anti-oxidant
Agent mixes 8~15min and forms pug, and kneading machine rotating speed is 950~1000r/min；
(2) it is compressing：Pug is pressed and is made adobe, briquetting pressure is 100-250MPa, vacuum for-
70~-75KPa, cycle 6~10 times；
(3) toast：Adobe is toasted, baking temperature is 180~300 DEG C, baking time is 10~24h.
Further, circulating kneading machine is moved using rotation in the step (1) to be kneaded.
Further, pug is pressed using compound type vacuum friction press in the step (2).
Further, adobe is placed in tunnel drying oven and is toasted in the step (3).
Preparation method of the present invention is simple, and preparation method is easily operated, employs new antioxidant antiflaming magnesium alloy powder,
Both the excellent antioxygenic property of metal magnesium powder had been maintained, the problem of metal magnesium powder self-firing and self-explosion in use had been prevented again,
The service life of magnesia carbon brick is improve, while reducing the production cost of magnesia carbon brick.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment one：A kind of magnesia carbon brick for improving antioxidant, including following component, component ratio by mass part meter：Electricity
4 parts of 75 parts of fused magnesia particle, 15 parts of fused magnesite fine powder, 5 parts of carbon, 1 part of antioxidant antiflaming magnesium alloy powder and phenolic resin.
The preparation method of the magnesia carbon brick for improving antioxidant：Comprise the following steps：
(1) knead：Using rotation circulating kneading machine is moved to be kneaded, weighed respectively by proportioning raw material fused magnesite particle,
Fused magnesite fine powder, carbon, antioxidant antiflaming magnesium alloy powder and phenolic resin, are placed in fused magnesite particle rotation shifting and follow first
Dry-mixed 5min is carried out in ring type kneading machine, phenolic resin is subsequently adding and is continued to mix 5min, be subsequently adding carbon mixing 8min, most
Fused magnesite fine powder and antioxidant antiflaming magnesium alloy powder mixing 8min is added to form pug afterwards, kneading machine rotating speed is 960r/
min；
(2) it is compressing：Pug is pressed using compound type vacuum friction press is made adobe, shaping pressure
Power is 150MPa, and vacuum is -75KPa, cycle 9 times；
(3) toast：Adobe is placed in tunnel drying oven toast and is obtained using the magnesia carbon brick of novel antioxidant,
The baking temperature of tunnel drying oven is 220 DEG C, and baking time is 15h.
Embodiment two：A kind of magnesia carbon brick for improving antioxidant, including following component, component ratio by mass number meter：
80 parts of fused magnesite particle, 10 parts of fused magnesite fine powder, 5 parts of carbon, 2 parts of antioxidant antiflaming magnesium alloy powder and phenolic resin 3
Part.
The preparation method of the magnesia carbon brick for improving antioxidant：Comprise the following steps
(1) knead：Using rotation circulating kneading machine is moved to be kneaded, weighed respectively by proportioning raw material fused magnesite particle,
Fused magnesite fine powder, carbon, antioxidant antiflaming magnesium alloy powder and phenolic resin, are placed in fused magnesite particle rotation shifting and follow first
Dry-mixed 8min is carried out in ring type kneading machine, phenolic resin is subsequently adding and is continued to mix 10min, be subsequently adding carbon mixing 10min,
It is eventually adding fused magnesite fine powder and antioxidant antiflaming magnesium alloy powder mixing 10min forms pug, kneading machine rotating speed is 970r/
min；
(2) it is compressing：Pug is pressed using compound type vacuum friction press is made adobe, shaping pressure
Power is 200MPa, and vacuum is -70KPa, cycle 9 times；
(3) toast：Adobe is placed in tunnel drying oven toast and is obtained using the magnesia carbon brick of novel antioxidant,
The baking temperature of tunnel drying oven is 200 DEG C, and baking time is 20h.
Embodiment three：A kind of magnesia carbon brick for improving antioxidant, including following component, component ratio by mass percentage
Meter：78 parts of fused magnesite particle, 12 parts of fused magnesite fine powder, 2 parts of carbon, 3 parts of antioxidant antiflaming magnesium alloy powder and phenolic aldehyde tree
5 parts of fat.
The preparation method of the magnesia carbon brick for improving antioxidant：Comprise the following steps：
(1) knead：Using rotation circulating kneading machine is moved to be kneaded, weighed respectively by proportioning raw material fused magnesite particle,
Fused magnesite fine powder, carbon, antioxidant antiflaming magnesium alloy powder and phenolic resin, are placed in fused magnesite particle rotation shifting and follow first
Dry-mixed 8min is carried out in ring type kneading machine, phenolic resin is subsequently adding and is continued to mix 8min, be subsequently adding carbon mixing 8min, most
Fused magnesite fine powder and antioxidant antiflaming magnesium alloy powder mixing 15min is added to form pug afterwards, kneading machine rotating speed is 990r/
min；
(2) it is compressing：Pug is pressed using compound type vacuum friction press is made adobe, shaping pressure
Power is 250MPa, and vacuum is -70KPa, cycle 8 times；
(3) toast：Adobe is placed in tunnel drying oven toast and is obtained using the magnesia carbon brick of novel antioxidant,
The baking temperature of tunnel drying oven is 240 DEG C, and baking time is 20h.
Example IV：A kind of magnesia carbon brick for improving antioxidant, including following component, component ratio by mass percentage
Meter：60 parts of fused magnesite particle, 29 parts of fused magnesite fine powder, 8 parts of carbon, 2 parts of antioxidant antiflaming magnesium alloy powder and phenolic aldehyde tree
1 part of fat.
The preparation method of the magnesia carbon brick for improving antioxidant：Comprise the following steps
(1) knead：Using rotation circulating kneading machine is moved to be kneaded, weighed respectively by proportioning raw material fused magnesite particle,
Fused magnesite fine powder, carbon, antioxidant antiflaming magnesium alloy powder and phenolic resin, are placed in fused magnesite particle rotation shifting and follow first
Dry-mixed 5min is carried out in ring type kneading machine, phenolic resin is subsequently adding and is continued to mix 5min, be subsequently adding carbon mixing 8min, most
Fused magnesite fine powder and antioxidant antiflaming magnesium alloy powder mixing 10min is added to form pug afterwards, kneading machine rotating speed is 980r/
min；
(2) it is compressing：Pug is pressed using compound type vacuum friction press is made adobe, shaping pressure
Power is 200MPa, and vacuum is -70KPa, cycle 9 times；
(3) toast：Adobe is placed in tunnel drying oven toast and is obtained using the magnesia carbon brick of novel antioxidant,
The baking temperature of tunnel drying oven is 200 DEG C, and baking time is 15h.
Embodiment five：A kind of magnesia carbon brick for improving antioxidant, including following component, component ratio by mass percentage
Meter：76 parts of fused magnesite particle, 11 parts of fused magnesite fine powder, 10 parts of carbon, 1 part of antioxidant antiflaming magnesium alloy powder and phenolic aldehyde tree
2 parts of fat.
The preparation method of the magnesia carbon brick for improving antioxidant, comprises the following steps：
(1) knead：Using rotation circulating kneading machine is moved to be kneaded, weighed respectively by proportioning raw material fused magnesite particle,
Fused magnesite fine powder, carbon, antioxidant antiflaming magnesium alloy powder, phenolic resin, are placed in fused magnesite particle rotation shifting and follow first
Dry-mixed 5min is carried out in ring type kneading machine, phenolic resin is subsequently adding and is continued to mix 15min, be subsequently adding carbon mixing 5min,
It is eventually adding fused magnesite fine powder and antioxidant antiflaming magnesium alloy powder mixing 15min forms pug, kneading machine rotating speed is 950r/
min；
(2) it is compressing：Pug is pressed using compound type vacuum friction press is made adobe, shaping pressure
Power is 150MPa, and vacuum is -75KPa, cycle 8 times；
(3) toast：Adobe is placed in tunnel drying oven toast and is obtained using the magnesia carbon brick of novel antioxidant,
The baking temperature of tunnel drying oven is 180 DEG C, and baking time is 20h.
Embodiment six：A kind of magnesia carbon brick for improving antioxidant, including with component, component ratio by mass percentage meter：
70 parts of fused magnesite particle, 14 parts of fused magnesite fine powder, 5 parts of carbon, 5 parts of antioxidant antiflaming magnesium alloy powder and phenolic resin 6
Part.
The preparation method of the magnesia carbon brick for improving antioxidant, comprises the following steps：
(1) knead：Using rotation circulating kneading machine is moved to be kneaded, weighed respectively by proportioning raw material fused magnesite particle,
Fused magnesite fine powder, carbon, antioxidant boron carbide and phenolic resin, are placed in fused magnesite particle rotation and move circulating mixed first
Dry-mixed 5min is carried out in mill, phenolic resin is subsequently adding and is continued to mix 8min, be subsequently adding carbon mixing 10min, finally added
Enter fused magnesite fine powder and antioxidant antiflaming magnesium alloy powder mixing 10min forms pug, kneading machine rotating speed is 1000r/min；
(2) it is compressing：Pug is pressed using compound type vacuum friction press is made adobe, shaping pressure
Power is 250MPa；
(3) toast：Adobe is placed in tunnel drying oven toast and is obtained using the magnesia carbon brick of novel antioxidant,
The baking temperature of tunnel drying oven is 300 DEG C, and baking time is 10h.
Comparative example：With in example one improve antioxidant magnesia carbon brick raw material components it is identical, will wherein antioxidant it is fire-retardant
Magnesium alloy powder is replaced with metallic aluminium powder, and magnesia carbon brick is made by same preparation method, carries 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.
Oxidation resistance test：Thermal shock resistance experiment is carried out to embodiment one and comparative example, by embodiment one and comparative example system
Into the sample of 25mm × 25mm × 150mm, after being heated to 1500 DEG C of insulation 30min, cut after taking out sample cooling, Measure section
The thickness of upper decarburized layer, to evaluate the inoxidizability of sample.
Corrosion resistance is tested：Corrosion resistance experiment 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, is placed under buried charcoal atmosphere, in being incubated 3h at 1500 DEG C.By crucible after furnace cooling
Cut along short transverse, measurement crucible central cross-section 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
| Project | Comparative example | Embodiment one |
| 3.04 | 3.10 | |
| Apparent porosity (%) | 2.4 | 2.1 |
| Strength at normal temperature (MPa) | 8 | 9.4 |
| Cold crushing strength (MPa) | 45.5 | 52.3 |
| High temperature break resistant intensity (MPa) | 6.17 | 6.8 |
| Inoxidizability (practical decarburized depth mm) | 4.52 | 3.08 |
| Anti-erosion index (%) | 14 | 8 |
| Linear expansivity (%) | 0.13 | 0.10 |
As shown in Table 1, the magnesia carbon brick using novel antioxidant and the magnesia carbon brick phase using metallic aluminium powder under similarity condition
Than, properties are close, but using novel antioxidant magnesia carbon brick inoxidizability and corrosion resistance be significantly better than use
The magnesia carbon brick of metallic aluminium powder, therefore magnesia carbon brick using novel antioxidant can improve the service life of magnesia carbon brick, be substitute it is existing
Have using the novel refractory of usual antioxidant magnesia carbon brick.
Claims (10)
1. a kind of magnesia carbon brick for improving antioxidant, it is characterized in that, including following component, component is counted by weight：Electric-melting magnesium
60~85 parts of sand particle, 10~30 parts of fused magnesite fine powder, 1~10 part of carbon, 1~5 part of antioxidant and phenolic resin 1~6
Part.
2. the magnesia carbon brick of antioxidant is improved as claimed in claim 1, it is characterized in that：The particle diameter of the fused magnesite particle is
1~8mm, content of MgO is more than 97wt.%.
3. the magnesia carbon brick of antioxidant is improved as claimed in claim 1, it is characterized in that：The granularity of the fused magnesite fine powder is small
In 0.1mm, content of MgO is more than 97wt.%.
4. the magnesia carbon brick of antioxidant is improved as claimed in claim 1, it is characterized in that：The carbon is graphite, the grain of graphite
It is 300~400 mesh to spend, and carbon content is more than 94% in graphite.
5. the magnesia carbon brick of antioxidant is improved as claimed in claim 1, it is characterized in that：The antioxidant is antiflaming magnesium alloy
Powder.
6. the magnesia carbon brick of antioxidant is improved as claimed in claim 5, it is characterized in that：The antiflaming magnesium alloy powder composition is：
80% magnesium metal, 10% manganese metal and 10% metallic zinc, granularity are 200 mesh.
7. it is a kind of improve antioxidant magnesia carbon brick preparation method, it is characterized in that, comprise the following steps, component ratio by mass
Number meter：
（1）Mixing：60~85 parts of fused magnesia particle, 10~30 parts of fused magnesite fine powder, 1~10 part of carbon, antioxygen are weighed respectively
1~6 part of 1~5 part of agent and phenolic resin, carry out dry-mixed 2~15min by fused magnesite particle first, are subsequently adding phenolic aldehyde tree
Fat continues to mix 5~15min, is subsequently adding carbon and mixes 2~15min, is eventually adding fused magnesite fine powder and antioxidant is mixed
Close 8~15min and form pug, kneading machine rotating speed is 950~1000 r/min；
（2）It is compressing：Pug is pressed and is made adobe, briquetting pressure is 100-250MPa, vacuum is -70
~-75KPa, cycle 6~10 times；
（3）Baking：Adobe is toasted, baking temperature is 180~300 DEG C, baking time is 10~24h.
8. the preparation method of the magnesia carbon brick of antioxidant is improved as claimed in claim 7, it is characterized in that：The step（1）In
Circulating kneading machine is moved using rotation to be kneaded.
9. the preparation method of the magnesia carbon brick of antioxidant is improved as claimed in claim 7, it is characterized in that：The step（2）In
Pug is pressed using compound type vacuum friction press.
10. the preparation method of the magnesia carbon brick of antioxidant is improved as claimed in claim 7, it is characterized in that：The step（3）In
Adobe is placed in tunnel drying oven and is toasted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246019.XA CN106810210A (en) | 2016-12-29 | 2016-12-29 | Improve magnesia carbon brick of antioxidant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246019.XA CN106810210A (en) | 2016-12-29 | 2016-12-29 | Improve magnesia carbon brick of antioxidant and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108409301A (en) * | 2018-03-28 | 2018-08-17 | 江苏苏嘉集团新材料有限公司 | A kind of magnesia carbon brick and preparation method thereof |
| CN110922167A (en) * | 2019-12-05 | 2020-03-27 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick added with rare earth oxide |
| 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 |
| CN113387685A (en) * | 2021-06-30 | 2021-09-14 | 大石桥市镁东福利耐材有限公司 | High-calcium homogenized magnesia carbon brick and preparation method thereof |
| CN116354702A (en) * | 2023-03-31 | 2023-06-30 | 海城利尔麦格西塔材料有限公司 | Production method of anti-stripping unburned magnesia-calcium-carbon brick |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037341A (en) * | 2007-02-09 | 2007-09-19 | 江苏苏嘉集团新材料有限公司 | Non-oxide composite low-carbon magnesia-carbon brick |
| CN101186515A (en) * | 2007-12-21 | 2008-05-28 | 杨红 | Ultra-low-carbon steel slag inclusion line magnesium-carbon brick and producing method thereof |
| CN101423417A (en) * | 2008-10-31 | 2009-05-06 | 江苏苏嘉集团新材料有限公司 | Low carbon magnesia-carbon brick containing metal iron |
| CN102910917A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-carbon refractory material |
| CN102910918A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-zirconium composite material |
| CN105503212A (en) * | 2015-12-21 | 2016-04-20 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick and preparation method thereof |
-
2016
- 2016-12-29 CN CN201611246019.XA patent/CN106810210A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037341A (en) * | 2007-02-09 | 2007-09-19 | 江苏苏嘉集团新材料有限公司 | Non-oxide composite low-carbon magnesia-carbon brick |
| CN101186515A (en) * | 2007-12-21 | 2008-05-28 | 杨红 | Ultra-low-carbon steel slag inclusion line magnesium-carbon brick and producing method thereof |
| CN101423417A (en) * | 2008-10-31 | 2009-05-06 | 江苏苏嘉集团新材料有限公司 | Low carbon magnesia-carbon brick containing metal iron |
| CN102910917A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-carbon refractory material |
| CN102910918A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-zirconium composite material |
| CN105503212A (en) * | 2015-12-21 | 2016-04-20 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108409301A (en) * | 2018-03-28 | 2018-08-17 | 江苏苏嘉集团新材料有限公司 | A kind of magnesia carbon brick and preparation method thereof |
| CN110922167A (en) * | 2019-12-05 | 2020-03-27 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick added with rare earth oxide |
| 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 |
| CN113387685A (en) * | 2021-06-30 | 2021-09-14 | 大石桥市镁东福利耐材有限公司 | High-calcium homogenized magnesia carbon brick and preparation method thereof |
| CN116354702A (en) * | 2023-03-31 | 2023-06-30 | 海城利尔麦格西塔材料有限公司 | Production method of anti-stripping unburned magnesia-calcium-carbon brick |
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Application publication date: 20170609 |