CN111533538A - Furnace lining material and application method thereof - Google Patents

Furnace lining material and application method thereof Download PDF

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Publication number
CN111533538A
CN111533538A CN202010281941.2A CN202010281941A CN111533538A CN 111533538 A CN111533538 A CN 111533538A CN 202010281941 A CN202010281941 A CN 202010281941A CN 111533538 A CN111533538 A CN 111533538A
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lining material
parts
furnace lining
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particle size
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Inventor
张晗
刘靖轩
郭钰龙
任林
刘丽
颜浩
赵伟
高梅
刘美荣
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Beijing Lier High Temperature Materials Co Ltd
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Beijing Lier High Temperature Materials Co Ltd
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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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/425—Graphite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
    • 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
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • 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
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Ceramic Products (AREA)

Abstract

The invention belongs to the field of refractory materials, and provides a furnace lining material. At high temperature, main phases such as a periclase phase, a corundum phase and spinel are formed in the material through the matching among the components and the factors of grain size grading. The complex phase reinforcement and the close adhesion between the materials not only reduce the porosity and improve the volume density, but also have excellent high-temperature rupture strength and compressive strength. The invention also provides the application of the furnace lining material in the preparation of refractory materials. The furnace lining material provided by the invention improves the comprehensive performance of refractory products, reduces the discharge of refractory industrial solid wastes, greatly reduces the consumption of refractory materials, and has obvious effects on saving mineral resources and energy. The invention also provides an application method of the furnace lining material. The application method is simple in process and easy to operate.

Description

Furnace lining material and application method thereof
Technical Field
The invention relates to the technical field of refractory materials, in particular to a furnace lining material and an application method thereof.
Background
The magnesia carbon refractory material has excellent thermal shock resistance and slag erosion resistance, and is widely applied to furnace lining parts of metallurgical equipment such as converters, electric furnaces, ladle slag lines and the like. However, carbon in the magnesia carbon refractory is easily oxidized at high temperature, which causes deterioration of material structure and performance, and further increases refractory consumption, and simultaneously reduces molten steel quality. In addition, with the development of clean steel technology, the requirement for low carbon or ultra-low carbon of the furnace lining material is higher and higher. Therefore, it is imperative to reduce the carbon content of the magnesia carbon refractory and to improve the slag erosion resistance of the magnesia carbon refractory. However, as the carbon content is reduced, the slag erosion resistance and the thermal shock resistance of the magnesia carbon brick are necessarily reduced, so that the protection of graphite from oxidation in the low-carbon magnesia carbon brick is important, and the good performance of the graphite in the magnesia carbon brick is fully exerted.
The technology of directly adding the antioxidant is the most mature technology for inhibiting the oxidation of the magnesia-carbon refractory material at present. The principle of action is generally considered from two aspects: firstly, the antioxidant is oxidized in preference to carbon, so that the carbon is protected; secondly, certain compounds are formed to block air holes and prevent further diffusion of oxygen and reactants. The traditional antioxidant (metal, alloy or nonmetal antioxidant) can control the decarburization speed of the magnesia carbon brick to different degrees and improve the oxidation resistance. The conventional antioxidant is cheap, but has many problems, such as cracking of brick body due to hydration reaction which easily occurs from high temperature to room temperature.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a furnace lining material which is applied to the preparation of refractory materials.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a furnace lining material which comprises the following components in parts by weight: 75-85 parts of fused magnesia, 3-15 parts of graphite, 1-5 parts of antioxidant and 1-5 parts of binder.
Preferably, the mass ratio of the components with the particle size of less than or equal to 1mm, the components with the particle size of more than 1mm and less than 3mm and the components with the particle size of more than or equal to 3mm and less than 5mm in the fused magnesia is (17-20): (28-30): (30-35).
Preferably, the antioxidant is Al4SiC4。
Preferably, the mass ratio of the component with the particle diameter of less than or equal to 0.044mm, the component with the particle diameter of more than 0.044mm and less than 0.074mm and the component with the particle diameter of more than or equal to 0.074mm and less than 1mm in the antioxidant is (0.5-4): (0.5-4): (92-99).
Preferably, the binder comprises a powder binder and/or a liquid binder.
Preferably, the powder binder comprises one or more of solid phenolic resin powder, medium-temperature asphalt powder and high-temperature asphalt powder, and the liquid binder is liquid phenolic resin.
The invention also provides the application of the furnace lining material in the preparation of refractory materials.
The invention also provides a method for preparing a refractory material by using the furnace lining material, which comprises the following steps:
(1) mixing the components to obtain a mixed material;
(2) ageing and pressing the mixed materials to obtain a semi-finished product;
(3) and sintering the semi-finished product to obtain the refractory material.
Preferably, the mixing time is 10-12 min; the ageing process is characterized in that the ageing temperature is 20-30 ℃, and the ageing time is 8-10 hours.
Preferably, the pressing pressure is 70-90 MPa, and the pressing time is 10-12 min; the sintering temperature is 180-220 ℃, and the sintering time is 22-26 h.
The invention provides a furnace lining material. At high temperature, main phases such as a periclase phase, a corundum phase and spinel are formed in the material through the matching among the components and the factors of grain size grading. The complex phase reinforcement and the close adhesion between the materials not only reduce the porosity and improve the volume density, but also have excellent high-temperature rupture strength and compressive strength.
The invention also provides the application of the furnace lining material in the preparation of refractory materials. The furnace lining material provided by the invention improves the comprehensive performance of refractory products, reduces the discharge of refractory industrial solid wastes, greatly reduces the consumption of refractory materials, and has obvious effects on saving mineral resources and energy.
Detailed Description
The invention provides a furnace lining material which comprises the following components in parts by weight: 75-85 parts of fused magnesia, 3-15 parts of graphite, 1-5 parts of antioxidant and 1-5 parts of binder.
In the invention, the fused magnesia is 75-85 parts by mass, preferably 78.5-81.5 parts by mass.
In the invention, the mass ratio of the components with the particle size of less than or equal to 1mm, the components with the particle size of more than 1mm and less than 3mm and the components with the particle size of more than or equal to 3mm and less than 5mm in the fused magnesia is preferably (17-20): (28-30): (30-35), more preferably (18-19): (28.5-29.5): (32-33).
Because the periclase crystal particles in the fused magnesite are thick and the periclase is in direct contact with the fused magnesite, the volume density of the particles is high, the materials are closely stacked through continuous gradation to reach the optimal volume density, thereby having good high temperature and service performance.
In the present invention, the graphite is 3 to 15 parts by mass, more preferably 6 to 12 parts by mass, and still more preferably 8 to 10 parts by mass.
The graphite added in the invention has a melting point as high as 3700 ℃, has a typical lamellar structure, high thermal conductivity, low expansion coefficient and elastic modulus, and can improve the thermal shock stability, slag penetration resistance and molten steel erosion resistance of the magnesia carbon brick.
In the present invention, the antioxidant is 1 to 5 parts by mass, and more preferably 2 to 4 parts by mass.
In the present invention, the antioxidant is preferably Al4SiC4。
In the invention, the mass ratio of the components with the particle size of less than or equal to 0.044mm, the components with the particle size of more than 0.044mm and less than 0.074mm and the components with the particle size of more than or equal to 0.074mm and less than 1mm in the antioxidant is preferably (0.5-4): (0.5-4): (92-99), more preferably (1-3): (1-3): (94-98), more preferably (1.5-2.5): (1.5-2.5): (95-97).
The invention uses antioxidant Al with high melting point, high chemical stability, high strength, low thermal expansion coefficient and excellent high-temperature strength, oxidation resistance and hydration resistance4SiC4After that, a magnesium aluminate spinel phase is formed in the sample. Al due to spinel phase formation4SiC4The volume is expanded, and pores generated by carbon oxidation are blocked to prevent the sample from being oxidized continuously. The oxidation resistance of the magnesium-carbon material is improved, and the problem of hydration cracking of the traditional antioxidant is avoided.
In the present invention, the binder is 1 to 5 parts by mass, and more preferably 2 to 4 parts by mass.
In the present invention, the binder preferably comprises a powder binder and/or a liquid binder.
In the invention, the powder binder preferably comprises one or more of solid phenolic resin powder, medium-temperature asphalt powder and high-temperature asphalt powder, and the liquid binder preferably is liquid phenolic resin.
In the invention, the softening point temperature of the medium-temperature asphalt powder is preferably 65-90 ℃, more preferably 70-85 ℃, and more preferably 77-83 ℃; the softening point temperature of the high-temperature asphalt powder is preferably 95-120 ℃, more preferably 100-115 ℃, and even more preferably 105-110 ℃. The medium-temperature asphalt powder or the high-temperature asphalt powder in the present invention may be commercially available as is well known to those skilled in the art.
The invention also provides the application of the furnace lining material in the preparation of refractory materials, wherein the refractory materials are furnace lining parts of metallurgical equipment such as a converter, an electric furnace, a ladle slag line and the like.
The invention also provides a method for preparing refractory material by using the furnace lining material, which preferably comprises the following steps:
(1) mixing the components to obtain a mixed material;
(2) ageing and pressing the mixed materials to obtain a semi-finished product;
(3) and sintering the semi-finished product to obtain the refractory material.
In the invention, the mixing is carried out by stirring and mixing, and the mixing time is preferably 10-12 min, and more preferably 10.5-11.5 min; the temperature of the ageing mixture is preferably 20-30 ℃, and further preferably 24-26 ℃; the ageing time is preferably 8-10 h, and more preferably 8.5-9.5 h.
In the invention, the pressing pressure is preferably 70-90 MPa, and more preferably 75-85 MPa; the pressing time is preferably 10-12 min, and more preferably 10.5-11.5 min; the sintering temperature is preferably 180-220 ℃, and further preferably 190-210 ℃; the sintering time is preferably 22-26 hours, and more preferably 23-25 hours.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
A furnace lining material comprises the following components in parts by weight: 20 parts of fused magnesia with the particle size of less than or equal to 1mm, 30 parts of fused magnesia with the particle size of more than 1mm and less than 3mm, 28 parts of fused magnesia with the particle size of more than or equal to 3mm and less than 5mm, 10 parts of graphite and Al with the particle size of less than or equal to 0.044mm4SiC40.16 part of Al with the grain diameter of more than 0.044mm and less than 0.074mm4SiC40.16 part of Al of a component having a particle diameter of 0.074mm or more and less than 1mm4SiC43.68 parts of phenolic resin powder and 3 parts of phenolic resin powder.
Example 2
A furnace lining material comprises the following components in parts by weight: 20 parts of fused magnesia with the grain diameter less than or equal to 1mm30 parts of fused magnesia with the grain diameter of more than 1mm and less than 3mm, 30 parts of fused magnesia with the grain diameter of more than or equal to 3mm and less than 5mm, 8 parts of graphite and Al with the grain diameter of less than or equal to 0.044mm4SiC40.12 part of Al with the grain diameter of more than 0.044mm and less than 0.074mm4SiC40.12 part of Al of a component having a particle diameter of 0.074mm or more and less than 1mm4SiC42.76 parts of medium-temperature asphalt powder with the softening point temperature of 70 ℃.
Example 3
A furnace lining material comprises the following components in parts by weight: 18 parts of fused magnesia with the grain diameter of less than or equal to 1mm, 29 parts of fused magnesia with the grain diameter of more than 1mm and less than 3mm, 30 parts of fused magnesia with the grain diameter of more than or equal to 3mm and less than 5mm, 10 parts of graphite and Al with the grain diameter of less than or equal to 0.044mm4SiC40.08 part of Al with the grain diameter of more than 0.044mm and less than 0.074mm4SiC40.08 part of Al of a component having a particle diameter of 0.074mm or more and less than 1mm4SiC41.84 parts of liquid phenolic resin and 2.5 parts of liquid phenolic resin.
Example 4
A furnace lining material comprises the following components in parts by weight: 20 parts of fused magnesia with the particle size of less than or equal to 1mm, 30 parts of fused magnesia with the particle size of more than 1mm and less than 3mm, 34 parts of fused magnesia with the particle size of more than or equal to 3mm and less than 5mm, 4 parts of graphite and Al with the particle size of less than or equal to 0.044mm4SiC40.06 part of Al with the grain diameter of more than 0.044mm and less than 0.074mm4SiC40.06 part of Al of a component having a particle diameter of 0.074mm or more and less than 1mm4SiC41.88 parts of high-temperature asphalt powder with the softening point temperature of 105 ℃.
Application example 1
Mixing the raw materials in the embodiment 1 according to the set proportion and the grain size gradation for 10min, ageing the mixture at 25 ℃ for 10h, pressing the ageing mixture at the pressure of 80MPa for 11min to obtain a semi-finished product, and sintering the semi-finished product at 200 ℃ for 23h to obtain the molding material. And testing the molding material after obtaining the molding material.
The test results are reported in tables 1 and 2.
Application example 2
The application example adopts the component proportion of the example 2, and the molding and the testing are carried out according to the process of the application example 1.
The test results are reported in tables 1 and 2.
Application example 3
The application example adopts the component proportion of the example 3, and the molding and the testing are carried out according to the process of the application example 1.
The test results are reported in tables 1 and 2.
Application example 4
The application example adopts the component proportion of the example 4, and the molding and the testing are carried out according to the process of the application example 1.
The test results are reported in tables 1 and 2.
TABLE 1 basic Property parameter Table of Molding Material
Figure BDA0002446912990000061
TABLE 2 ladle life
Bag number Service life/furnace
Application example 1 5# 50
Application example 2 2# 54
Application example 3 18# 53
Application example 4 21# 56
According to the embodiment, the ladle slag line complex-phase furnace lining material prepared by the technical scheme provided by the invention has the advantages of reduced porosity, improved volume density, excellent high-temperature rupture strength and compressive strength, greatly prolonged service life, reduced consumption of refractory materials and reduced discharge of refractory industrial solid wastes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The furnace lining material is characterized by comprising the following components in parts by weight: 75-85 parts of fused magnesia, 3-15 parts of graphite, 1-5 parts of antioxidant and 1-5 parts of binder.
2. The furnace lining material according to claim 1, wherein the mass ratio of the components with the particle size of 1mm or less, the components with the particle size of more than 1mm and less than 3mm, and the components with the particle size of more than 3mm and less than 5mm in the fused magnesia is (17-20): (28-30): (30-35).
3. The lining material of claim 1 or 2, wherein said antioxidant is Al4SiC4。
4. The furnace lining material according to claim 3, wherein the mass ratio of the component with the particle size of 0.044mm or less, the component with the particle size of more than 0.044mm and less than 0.074mm, and the component with the particle size of more than 0.074mm and less than 1mm in the antioxidant is (0.5-4): (0.5-4): (92-99).
5. The lining material of claim 4, wherein said binder comprises a powder binder and/or a liquid binder.
6. The furnace lining material of claim 5, wherein the powder binder comprises one or more of solid phenolic resin powder, medium-temperature asphalt powder and high-temperature asphalt powder, and the liquid binder is liquid phenolic resin.
7. Use of a lining material according to any one of claims 1 to 6 in the manufacture of a refractory material.
8. A method for preparing a refractory material by using the furnace lining material of any one of claims 1 to 6, which is characterized by comprising the following steps:
(1) mixing the components to obtain a mixed material;
(2) ageing and pressing the mixed materials to obtain a semi-finished product;
(3) and sintering the semi-finished product to obtain the refractory material.
9. The method of claim 8, wherein the mixing time is 10 to 12 min; the ageing process is characterized in that the ageing temperature is 20-30 ℃, and the ageing time is 8-10 hours.
10. The method according to claim 8 or 9, wherein the pressure of the pressing is 70 to 90MPa, and the time of the pressing is 10 to 12 min; the sintering temperature is 180-220 ℃, and the sintering time is 22-26 h.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106145971A (en) * 2016-06-30 2016-11-23 张刚 A kind of cracking resistance magnesia carbon brick and preparation method thereof
CN108585895A (en) * 2018-05-10 2018-09-28 苏州佳耐材料科技有限公司 A method of addition ternary compound prepares high-performance magnesia carbon brick

Patent Citations (2)

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