CN109553396A - A kind of Low-carbon magnesia-carbon refractory material additive, preparation method and applications - Google Patents
A kind of Low-carbon magnesia-carbon refractory material additive, preparation method and applications Download PDFInfo
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- CN109553396A CN109553396A CN201811235708.XA CN201811235708A CN109553396A CN 109553396 A CN109553396 A CN 109553396A CN 201811235708 A CN201811235708 A CN 201811235708A CN 109553396 A CN109553396 A CN 109553396A
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- 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
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- 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
- C04B35/62605—Treating the starting powders individually or as mixtures
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- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- 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
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
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- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
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- C04B2235/428—Silicon
Abstract
The invention belongs to fire resisting material field, a kind of Low-carbon magnesia-carbon refractory material additive, preparation method and applications are related generally to, which is characterized in that the additive is B4C‑Al2O3- C composite powder, including using carbon black, diboron trioxide and aluminium powder as raw material, it is made through self-propagating high-temperature synthesis, by mass percentage, carbon black mass score is 4%~13% in the raw material, aluminium powder mass fraction is 38%~42% in raw material, and diboron trioxide mass fraction is 49%~54% in raw material, and the sum of carbon black, diboron trioxide and aluminium powder mass percent are 100%.The Low-carbon magnesia-carbon refractory material Additive Production simple process prepared using the method for the present invention, low energy consumption, B at low cost, prepared4C‑Al2O3- C composite powder is applied to have excellent mechanical property, inoxidizability and resistance to slag in Low-carbon magnesia-carbon refractory material.
Description
Technical field
The invention belongs to fire resisting material fields, in particular to propose a kind of Low-carbon magnesia-carbon refractory material additive, preparation method
And its application.
Background technique
Due to excellent thermal shock resistance and resistance to slag, magnesia carbon brick is widely used in converter, electric arc furnaces, RH vacuum refining
The inner lining material and slag line material of furnace, slide plate, ladle etc., wherein carbon provides key effect in magnesia carbon refractory.It is logical
The carbon of 12-20wt% is added in magnesia carbon brick often to improve the high-temperature behavior of magnesia carbon brick, but with the increase magnesium carbon of carbon content
There is also carbon to aoxidize serious, energy consumption increase, damage furnace shell or ladle external structure at high temperature for brick, generates a large amount of COXGas
It influences environment, increase the problems such as consumption of graphite resource.The demand to mild steel, clean steel increases simultaneously, needs to fire resisting
Material is continuously improved.Therefore, the content of carbon in magnesia carbon brick is reduced, developing low carbon magnesia carbon brick becomes research hotspot.However, with carbon
The reduction of content, thermal shock resistance, resistance to slag, the thermal shock resistance of magnesia carbon brick decreased significantly.The normal quilt of the carbon black of nano-scale
For low carbon magnesia carbon brick as carbon source, but the carbon black activity being directly added into is higher, is oxidized easily decarburization.So preventing low-carbon magnesium
The oxidation of carbon in carbon brick, while carbon is more evenly distributed can improve the performance of low carbon magnesia carbon brick well.Wherein high performance antioxidation
Agent is most effective anti-oxidation method as additive, and performance is better than one-component when using composite powder as antioxidant
Antioxidant.Boron carbide due to good high-temperature behavior, can prior to carbon and oxygen reaction frequently as antioxidant use, traditional side
Method prepares that boron carbide synthesis temperature is excessively high, and the production cycle is long, and energy consumption is larger, environmental hazard.And self-spread synthesizing method is due to reaction
Temperature height (1900-3300 DEG C) is not required to be the self-heating for utilizing high chemical reaction heat between reactant with other heat sources after igniting
With a kind of technology for synthesizing refractory inorganic material from conductive process.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention proposes a kind of Low-carbon magnesia-carbon refractory material additive, preparation method
And its application.The additive has the excellent properties of boron carbide and aluminium oxide simultaneously, and preparation method not only preparation process it is simple,
Fast energy-saving is achieved with Low-carbon magnesia-carbon refractory material additive by the preparation method of a step, applies it to low-carbon magnesium carbon
In brick, its service performance is improved.
In order to realize that above-mentioned task, the present invention take following technical solution:
A kind of Low-carbon magnesia-carbon refractory material additive, the additive are B4C-Al2O3- C composite powder, including with carbon black,
Diboron trioxide and aluminium powder are raw material, are made through self-propagating high-temperature synthesis,
By mass percentage, carbon black mass score is 4%~13% in the raw material, aluminium powder mass fraction in raw material
It is 38%~42%, diboron trioxide mass fraction is 49%~54% in raw material, carbon black, diboron trioxide and aluminium powder quality
The sum of percentage is 100%.
Further, purity >=98.8% of diboron trioxide in raw material, partial size are 74 μm, the purity of aluminium powder >=
99.5%, partial size is 45 μm.
Further, it specifically includes: it is dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, and in self- propagating height
It is reacted in warm reacting furnace to obtain the final product.
A kind of preparation method of Low-carbon magnesia-carbon refractory material additive, including diboron trioxide, aluminium powder and carbon black will be crossed and pressed
Proportion is dry-pressing formed after mixing, and is lighted a fire and reacted with detonator in SHS process reacting furnace.
Optionally, by mass percentage, the carbon black mass score is 4%~13%, and aluminium powder mass fraction is
38%~42%, diboron trioxide mass fraction be 49%~54%, carbon black, diboron trioxide and aluminium powder mass percent it
Be 100%.
Preferably, specifically include: dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, carbon black mass score is
5.9%, aluminium powder mass fraction is 41.0%, and diboron trioxide mass fraction is 53.1%, carbon black, aluminium powder and diboron trioxide matter
Measuring the sum of percentage is 100%, is then lighted a fire and is reacted with detonator in SHS process reacting furnace.
Preferably, specifically include: dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, carbon black mass score is
6.8%, aluminium powder mass fraction is 40.6%, and diboron trioxide mass fraction is 52.6%, carbon black, aluminium powder and diboron trioxide matter
Measuring the sum of percentage is 100%, is then lighted a fire and is reacted with detonator in SHS process reacting furnace.
Preferably, specifically include: dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, carbon black mass score is
8.0%, aluminium powder mass fraction is 40.1%, and diboron trioxide mass fraction is 51.9%, carbon black, aluminium powder and diboron trioxide matter
Measuring the sum of percentage is 100%, is then lighted a fire and is reacted with detonator in SHS process reacting furnace.
Preferably, specifically include: dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, carbon black mass score is
10.8%, aluminium powder mass fraction is 38.8%, and diboron trioxide mass fraction is 50.4%, carbon black, aluminium powder and diboron trioxide
The sum of mass percent is 100%, is then lighted a fire and is reacted with detonator in SHS process reacting furnace.
Low-carbon magnesia-carbon refractory material additive of the present invention or Low-carbon magnesia-carbon refractory material of the present invention addition
The Low-carbon magnesia-carbon refractory material additive that the preparation method of agent is prepared is used to prepare the application of low carbon magnesia carbon brick.
Compared with the prior art, the present invention has the following advantages:
(1) the invention proposes a kind of Low-carbon magnesia-carbon refractory material additive, i.e. B4C-Al2O3- C composite powder, the additive
There are the excellent properties of boron carbide and aluminium oxide simultaneously, nano-scale is also introduced by the additional amount of carbon black in control raw material
Carbon not only makes the carbon in low carbon magnesia carbon brick slow down oxidation, but also the carbon energy of equally distributed nano-scale contained in additive
Further increase the inoxidizability of low carbon magnesia carbon brick；
(2) the present invention provides a kind of Low-carbon magnesia-carbon refractory material additive Bs4C-Al2O3The preparation method of-C composite powder,
This method is made, preparation process is simple using carbon black, diboron trioxide and aluminium powder as raw material of one step of self-propagating high-temperature synthesis
Economy, fast energy-saving；
(3) present invention obtains Low-carbon magnesia-carbon refractory material additive B by one-step synthesis4C-Al2O3- C composite powder, particle
Size is smaller, even particle distribution, passes through feed change burden control product each component ratio.
(4) Low-carbon magnesia-carbon refractory material additive application prepared by the present invention not only has excellent in low carbon magnesia carbon brick
Inoxidizability is improved to resistance to slag, mechanical property, physical property.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is preparation technology flow chart of the invention；
Fig. 2 is apparatus figure of the invention；
Fig. 3 is B prepared by the embodiment of the present invention 14C-Al2O3The XRD spectrum of-C composite powder；
Fig. 4 is B prepared by the embodiment of the present invention 24C-Al2O3The XRD spectrum of-C composite powder；
Fig. 5 is B prepared by the embodiment of the present invention 34C-Al2O3The XRD spectrum of-C composite powder；
Fig. 6 is B prepared by the embodiment of the present invention 44C-Al2O3The XRD spectrum of-C composite powder；
Fig. 7 is B prepared by the embodiment of the present invention 44C-Al2O3SEM the and EDS map of-C composite powder, wherein (a), (b),
(c), (d) is the photo that is sequentially increased of amplification factor, (e), (f), (g) be respectively the different-shape marked in Fig. 7 (c) A, B,
The energy spectrum diagram that 3 points of C；
Fig. 8 is the B that the present invention prepares embodiment 44C-Al2O3- C composite powder be added magnesia carbon brick before and after bulk density and
Porosity figure；
Fig. 9 is the B that the present invention prepares embodiment 44C-Al2O3The resistance to pressure of room temperature before and after magnesia carbon brick is added in-C composite powder
Spend (CCS) and strength retention figure；
Figure 10 is the B that the present invention prepares embodiment 44C-Al2O3The oxidation and decarbonization before and after magnesia carbon brick is added in-C composite powder
Pattern；
Figure 11 is the B that the present invention prepares embodiment 44C-Al2O3The resistance to slag test before and after magnesia carbon brick is added in-C composite powder
Pattern afterwards；
Below in conjunction with drawings and examples, the present invention is described in further detail.
Specific embodiment
Boron carbide is due to high-melting-point, low thermal coefficient of expansion, chemical property stabilization, elevated temperature strength height, strong oxygen absorption energy
The excellent properties such as power, frequently as a kind of efficient antioxidant.Aluminium oxide is usually and magnesia is used to prepare aluminium-magnesia carbon brick together,
Improve the performance of refractory material.The present invention prepares Low-carbon magnesia-carbon refractory material addition by self-spread synthesizing method using Al as reducing agent
Agent, i.e. B4C-Al2O3- C composite powder, chemical equation C+2B2O3+4Al→B4C+2Al2O3, wherein aluminium powder and boron oxide
Reaction generates aluminum oxide and boron first, and the boron for reacting generation, which is further reacted with excessive carbon black, generates boron carbide.Wherein,
The additional amount of boron oxide and aluminium powder is added with molar ratio 1:2, carbon black is matched with chemical equation proportion excessive 0%~200%
Material.
Low-carbon magnesia-carbon refractory material additive prepared by the present invention, i.e. B4C-Al2O3- C composite powder.It is crystallized with boron carbide
It is good, particle size is small, preparation process fast energy-saving, the advantages that equipment is simple, the B of preparation4C-Al2O3- C composite powder combines carbon
Change boron, aluminium oxide and the advantages of nano-sized carbon, applied to improving mechanical property, inoxidizability, resistance to slag in low carbon magnesia carbon brick.Tool
Body is the B that self-propagating high-temperature synthesis preparation is used using carbon black, diboron trioxide and aluminium powder as raw material4C-Al2O3- C composite powder,
By mass percentage, carbon black mass score is 4%~13% in the raw material, and aluminium powder mass fraction is 38% in raw material
~42%, diboron trioxide mass fraction is 49%~54% in raw material, carbon black, diboron trioxide and aluminium powder mass percent it
Be 100%.
It is that the present invention is described by way of example by inventor, but the present invention is not limited to implementations below below
Example for those of ordinary skill in the art to which the present invention belongs without departing from the inventive concept of the premise, can be with
Several simple deduction or replace are made, satisfactory Low-carbon magnesia-carbon refractory material additive B can be prepared4C-Al2O3- C is multiple
Powder is closed, all shall be regarded as belonging to protection scope of the present invention.Below unless otherwise specified, the dosage of substance is that quality percentage contains
Amount.
Embodiment 1
The present embodiment is using carbon black (30-50nm, Shandong Nai Site carbon black Co., Ltd), aluminium powder (purity >=99.5%, length
Sha Tianjiu metal material Co., Ltd) and diboron trioxide (purity >=98.8%, the excellent vertical electronic chemical Limited Liability public affairs in Xi'an
Department) it is raw material, by mass percentage, carbon black mass score is 4.6%, and aluminium powder mass fraction is 41.5%, diboron trioxide
Mass fraction is 53.9%, and the sum of carbon black, diboron trioxide and aluminium powder mass percent are 100%.By uniformly mixed raw material
It is fitted into mold, then dry-pressing formed to its, is pressed into the cylindrical sample that diameter is 20mm；After terminating molding, sample is carried out
Demoulding, is then placed in self propagating high temperature reacting furnace, and argon gas is full of in reaction chamber, and pressure 1MPa is generated after being powered by tungsten wire
Heat in turn reacts Ti-C detonator, and detonator reaction, which generates a large amount of heat, makes sample that SHS process reaction occur,
Specific experimental provision schematic diagram and dress sample sequence are as shown in Fig. 2, are then cooled to room temperature to furnace temperature, close power supply, release is opened
Fire door is opened, material is taken out.The material of firing is crushed, is ground to get B4C-Al2O3- C composite powder.
Using Japanese D/Max 2400 type X-ray diffraction (XRD) analyzer (Cu target, Ni piece) prepared by embodiment 1
B4C-Al2O3- C composite powder has carried out X-ray diffraction analysis and has obtained XRD spectrum referring to attached drawing 3, from the figure 3, it may be seen that there is carbon in product
Change the characteristic peak of boron, aluminium oxide and carbon, wherein carbon peak is smooth Bao Feng, illustrate to have in product boron carbide, aluminium oxide and carbon and
Since carbon does not participate in the higher carbon black of indefinite form degree of reaction and remnants completely.
Embodiment 2:
With embodiment 1, but unlike the first embodiment, by mass percentage, carbon black mass score is 5.9%, aluminium powder
Mass fraction is 41.0%, diboron trioxide mass fraction be 53.1%, carbon black, aluminium powder and diboron trioxide mass percent it
Be 100%.
Using Japanese D/Max 2400 type X-ray diffraction (XRD) analyzer (Cu target, Ni piece) prepared by embodiment 1
B4C-Al2O3- C composite powder has carried out X-ray diffraction analysis and has obtained XRD spectrum referring to attached drawing 4, as shown in Figure 4, there is carbon in product
Change the characteristic peak of boron, aluminium oxide and carbon, wherein carbon peak is smooth Bao Feng, illustrate to have in product boron carbide, aluminium oxide and carbon and
Carbon is the higher carbon black of indefinite form degree.
Embodiment 3:
With embodiment 1, but unlike the first embodiment, by mass percentage, carbon black mass score is 6.8%, aluminium powder
Mass fraction is 40.6%, diboron trioxide mass fraction be 52.6%, carbon black, aluminium powder and diboron trioxide mass percent it
Be 100%.
B prepared by embodiment 34C-Al2O3- C composite powder has carried out X-ray diffraction and has obtained XRD spectrum referring to attached drawing 5, by
Fig. 5 is it is found that there is the characteristic peak of boron carbide, aluminium oxide and carbon in product prepared by embodiment 2, wherein carbon peak is smooth Bao Feng,
Illustrate to have boron carbide, aluminium oxide and carbon in product and carbon is the higher carbon black of indefinite form degree.
Embodiment 4:
With embodiment 1, but unlike the first embodiment, by mass percentage, carbon black mass score is 8.0%, aluminium powder
Mass fraction is 40.1%, diboron trioxide mass fraction be 51.9%, carbon black, aluminium powder and diboron trioxide mass percent it
Be 100%.
B prepared by embodiment 44C-Al2O3- C composite powder has carried out X-ray diffraction and has obtained XRD spectrum referring to attached drawing 6, by
Attached drawing 6 is it is found that there is the characteristic peak of boron carbide, aluminium oxide and carbon in product prepared by embodiment 4, wherein carbon peak is smooth packet
Peak illustrates to have boron carbide, aluminium oxide and carbon in product and carbon is the higher carbon black of indefinite form degree.
B prepared by embodiment 44C-Al2O3- C composite powder has carried out morphology analysis and energy spectrum analysis obtains SEM and EDS figure
Spectrum is referring to Fig. 7, wherein (a), (b), (c), (d) they are the photo that amplification factor is sequentially increased, (e), (f), (g) be respectively Fig. 7 (c)
In 3 points of A, B, C of the energy spectrum diagram of different-shape that marks.As shown in Figure 7, cubic granules are in the product of embodiment preparation
Boron carbide, molten plate structure are aluminium oxide, and nano-sized particles are carbon black, are by boron carbide particles known to comparison scale
0.5-2 μm, and be embedded in molten aluminium oxide, while carbon black is evenly distributed in product.
The composition of low carbon magnesia carbon brick is shown in Table 1, composite powder is synthesized by the composition ingredient of table 1, after compression moulding, 240
Low carbon magnesia carbon brick is made in drying at DEG C.Using the bulk density and open porosity of Archimedes's drainage test low carbon magnesia carbon brick；
Use the flexural strength and compressive resistance of universal testing machine test sample；Using static crucible assay 1600 in high-temperature electric resistance furnace
It is sintered at DEG C and keeps the temperature 3h test erosion-resisting characteristics；2h is sintered and protected at 1600 DEG C in high temperature box type resistance furnace, according to decarburization
Thickness degree slip characterizes inoxidizability；3h is sintered and kept the temperature at 1600 DEG C in high temperature box type resistance furnace, carries out 3 chilling urgency
After heat treatment, thermal shock resistance is characterized according to strength retention.LCMC is that B is not added in table 14C-Al2O3The blank group of-C composite powder,
LCMC-S4 is the B of addition synthesis4C-Al2O3The low carbon magnesia carbon brick of-C composite powder preparation.
1 low carbon magnesia carbon brick raw material proportioning of table
With reference to the accompanying drawings 8-11 performance test results it can be concluded that, be added embodiment 4 carbon black excess 80wt% burn close
At composite powder after low carbon magnesia carbon brick porosity reduced rate 14.1%, bulk density have increased slightly, compressive resistance increment rate
3.2%, strength retention increment rate 14.5%.Illustrate B4C-Al2O3Physical property of-C the composite powder to low carbon magnesia carbon brick, mechanics
Performance and thermal shock resistance are all improved.By to sample measurement multiple spot practical decarburized depth, the depth of erosion, erosion area after experiment
It averages and compares the practical decarburized depth it is found that the low carbon magnesia carbon brick being added after the composite powder of carbon black excess 80wt% conbustion synthesis
Slip is 22.4%, depth of erosion reduction rate is 27.9%, and erosion area slip is 27.6%.Illustrate B4C-Al2O3- C is multiple
Powder is closed all to be significantly improved to the inoxidizability and resistance to slag of low carbon magnesia carbon brick.
Embodiment 5:
With embodiment 1, but unlike the first embodiment, by mass percentage, carbon black mass score is 8.8%, aluminium powder
Mass fraction is 39.7%, diboron trioxide mass fraction be 51.5%, carbon black, aluminium powder and diboron trioxide mass percent it
Be 100%.
Embodiment 6:
With embodiment 1, but unlike the first embodiment, by mass percentage, carbon black mass score is 10.8%, aluminium
Powder mass fraction is 38.8%, and diboron trioxide mass fraction is 50.4%, carbon black, aluminium powder and diboron trioxide mass percent
The sum of be 100%.
Embodiment 7:
With embodiment 1, but unlike the first embodiment, by mass percentage, carbon black mass score is 12.7%, aluminium
Powder mass fraction be 38%, diboron trioxide mass fraction be 49.3%, carbon black, aluminium powder and diboron trioxide mass percent it
Be 100%.
Claims (10)
1. a kind of Low-carbon magnesia-carbon refractory material additive, which is characterized in that the additive is B4C-Al2O3- C composite powder, packet
It includes using carbon black, diboron trioxide and aluminium powder as raw material, is made through self-propagating high-temperature synthesis,
By mass percentage, carbon black mass score is 4%~13% in the raw material, and aluminium powder mass fraction is in raw material
38%~42%, diboron trioxide mass fraction is 49%~54% in raw material, carbon black, diboron trioxide and aluminium powder quality percentage
Than the sum of be 100%.
2. Low-carbon magnesia-carbon refractory material additive as described in claim 1, which is characterized in that diboron trioxide is pure in raw material
Degree >=98.8%, partial size are 74 μm, and purity >=99.5%, the partial size of aluminium powder are 45 μm.
3. Low-carbon magnesia-carbon refractory material additive as described in claim 1, specifically includes: by carbon black, diboron trioxide and aluminium
Powder is dry-pressing formed after mixing, and is reacted in self propagating high temperature reacting furnace to obtain the final product.
4. a kind of preparation method of Low-carbon magnesia-carbon refractory material additive, which is characterized in that including diboron trioxide, aluminium powder will be crossed
It is dry-pressing formed after being mixed according to the ratio with carbon black, and lighted a fire and reacted with detonator in SHS process reacting furnace.
5. the preparation method of Low-carbon magnesia-carbon refractory material additive as claimed in claim 4, which is characterized in that press quality percentage
Than meter, the carbon black mass score is 4%~13%, and aluminium powder mass fraction is 38%~42%, diboron trioxide quality point
Number is 49%~54%, and the sum of carbon black, diboron trioxide and aluminium powder mass percent are 100%.
6. the preparation method of Low-carbon magnesia-carbon refractory material additive as claimed in claim 5, which is characterized in that specifically include:
Dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, carbon black mass score is 5.9%, and aluminium powder mass fraction is
41.0%, diboron trioxide mass fraction is 53.1%, and the sum of carbon black, aluminium powder and diboron trioxide mass percent are 100%,
Then it is lighted a fire and is reacted with detonator in SHS process reacting furnace.
7. the preparation method of Low-carbon magnesia-carbon refractory material additive as claimed in claim 5, which is characterized in that specifically include:
Dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, carbon black mass score is 6.8%, and aluminium powder mass fraction is
40.6%, diboron trioxide mass fraction is 52.6%, and the sum of carbon black, aluminium powder and diboron trioxide mass percent are 100%,
Then it is lighted a fire and is reacted with detonator in SHS process reacting furnace.
8. the preparation method of Low-carbon magnesia-carbon refractory material additive as claimed in claim 5, which is characterized in that specifically include:
Dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, carbon black mass score is 8.0%, and aluminium powder mass fraction is
40.1%, diboron trioxide mass fraction is 51.9%, and the sum of carbon black, aluminium powder and diboron trioxide mass percent are 100%,
Then it is lighted a fire and is reacted with detonator in SHS process reacting furnace.
9. the preparation method of Low-carbon magnesia-carbon refractory material additive as claimed in claim 5, which is characterized in that specifically include:
Dry-pressing formed after carbon black, diboron trioxide and aluminium powder are mixed, carbon black mass score is 10.8%, and aluminium powder mass fraction is
38.8%, diboron trioxide mass fraction is 50.4%, and the sum of carbon black, aluminium powder and diboron trioxide mass percent are 100%,
Then it is lighted a fire and is reacted with detonator in SHS process reacting furnace.
10. low-carbon magnesium carbon fire resisting described in Low-carbon magnesia-carbon refractory material additive or claim 4-9 described in claim 1-3
The Low-carbon magnesia-carbon refractory material additive that the preparation method of meterial additive is prepared is used to prepare the application of low carbon magnesia carbon brick.
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