CN110272268A - A kind of preparation method of ladle corundum lining brick - Google Patents
A kind of preparation method of ladle corundum lining brick Download PDFInfo
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- CN110272268A CN110272268A CN201810221370.6A CN201810221370A CN110272268A CN 110272268 A CN110272268 A CN 110272268A CN 201810221370 A CN201810221370 A CN 201810221370A CN 110272268 A CN110272268 A CN 110272268A
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- 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
- C04B35/10—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 aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/105—Refractories from grain sized mixtures containing chromium oxide or chrome ore
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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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- 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
- C04B2235/32—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
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- C—CHEMISTRY; METALLURGY
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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
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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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- 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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- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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- Materials Engineering (AREA)
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
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Abstract
The present invention relates to a kind of preparation methods of ladle corundum lining brick.Aggregate, powder, bonding agent, water are according to mass values (60 ~ 70): (20 ~ 30): (3 ~ 8): (10 ~ 30) are mixed；Pug compression moulding；300 ~ 350 DEG C dry solidification 36 ~ 48 hours；Reach 1300 ~ 1400 DEG C using temperature when ladle baking, maintain 5 ~ 10 hours, forms Ceramic bond, realize gradually be sintered when in use.Service life ladle sintering of the present invention is doubled more than 200 times than magnesia-alumina brick service life.
Description
Technical field
The present invention relates to refractory material fabricating technology fields, and in particular to a kind of preparation side of ladle corundum lining brick
Method.
Background technique
Unburned brick is also known as chemical hardening brick.Refer to that adobe can directly build the refractory material used without sintering.It is given birth to
Production. art is fairly simple, is the refractory material with unlike material, chemical action of the combination of powder mainly by bonding agent in product
It is combined into.Common bonding agent has: waterglass, sulfate, metal chloride, phosphoric acid or phosphate, silicate and cement etc..
The production technology of unburned brick and fired brick are essentially identical, performance depend on granular material and bonding agent property and
Dosage.Compared with the fired brick of same material, elevated temperature strength is lower, should not be used in weight bearing area；But resistance to heat shocks is higher, in smelting
The industrial departments such as gold, chemical industry, building materials can replace fired brick to use extensively.Traditional unburned brick service life is short, traditional high-alumina brick
Service life only has 20 ~ 30 times, and currently used magnesia-alumina brick is also only had 100 times or so using life.
Summary of the invention
The purpose of the present invention is to solve the above problem, provides a kind of preparation method of ladle corundum lining brick, utilizes the party
Ladle corundum lining brick prepared by method compares current unburned brick long service life.
To solve the above-mentioned problems, The technical solution adopted by the invention is as follows:
A kind of preparation method of ladle corundum lining brick, which is characterized in that including following operating procedure:
(1) aggregate, powder, bonding agent, water are according to mass values (60 ~ 70): (20 ~ 30): (3 ~ 8): (10 ~ 30) are mixed,
At pug；
(2) pug compression moulding；
(3) molding adobe 300 ~ 350 DEG C dry solidification 36 ~ 48 hours；
(4) it when reaching 1350 DEG C using temperature when ladle baking, maintains 5 ~ 10 hours, forms Ceramic bond, realize when in use
Gradually it is sintered；
The aggregate is white fused alumina, pink fused alumina, aluminum-spinel, fused magnesite, and wherein the quality of white fused alumina accounts for bone meal gross mass
Percentage composition be 60% ~ 80%, the one or more gross mass of pink fused alumina, aluminum-spinel, fused magnesite accounts for bone meal gross mass
Percentage composition be 20% ~ 40%；
The powder is industrial alumina powder, metallic aluminium powder, a alumina powder, and wherein it is total to account for powder for the quality of industrial alumina powder
The percentage composition of quality is 60% ~ 70%, and metallic aluminium powder, a alumina powder one or two gross mass account for the quality of powder gross mass
Percentage composition is 30% ~ 40%；
The bonding agent is carboxymethyl cellulose, at least two in benzylcellulose, silester, aluminum sulfate.
Further, Al in the white fused alumina2O3Mass percentage be not less than 98%；The quality percentage of chromium contains in pink fused alumina
Amount is not less than 15%；The mass percentage of aluminium is not less than 70% in aluminum-spinel, and the quality percentage of magnesium contains in aluminum-spinel
Amount is not less than 20%；Magnesia mass percentage is not less than 98% in the fused magnesite.
Further, the aggregate is classified according to 0 ~ 1mm of granular size, 1 ~ 3mm, 3 ~ 5mm, 5 ~ 8mm, and 0 ~ 1mm, 1 ~
The different size of aggregate quality ratio of 3mm, 3 ~ 5mm, 5 ~ 8mm is (10 ~ 15): (30 ~ 40): (30 ~ 40): (5 ~ 10).
It the working principle of the invention and has the beneficial effect that
Reach 1300 ~ 1400 DEG C using temperature when ladle baking to be tentatively sintered, liquid regelation, realizes transformation of crystal.
Ceramic bond is formed, density is increased, improves service performance, A1203More than 90%, body is close to be not less than 30g/cm, and room temperature pressure resistance is super
40Mp is crossed, refractory temperature is up to 1750 DEG C.Service life ladle is sintered more than 200 times, is doubled than magnesia-alumina brick.
Specific embodiment
It is described in detail below with reference to the preferred embodiment of the present invention, so that advantages and features of the invention can be easier to
In being readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Specific embodiment one:
A kind of preparation method of ladle corundum lining brick, which is characterized in that including following operating procedure:
(1) aggregate is classified according to 0 ~ 1mm of granular size, 1 ~ 3mm, 3 ~ 5mm, 5 ~ 8mm, 0 ~ 1mm, 1 ~ 3mm, 3 ~
The different size of aggregate quality ratio of 5mm, 5 ~ 8mm is 10:40:35:5；
(2) aggregate, powder, bonding agent, water are mixed according to mass values 60:25:5:10, at pug；
(3) pug compression moulding；
(4) molding adobe 300 DEG C dry solidification 48 hours；
(5) reach 1350 DEG C using temperature when ladle baking, maintain 8 hours, form Ceramic bond, realize gradually burn when in use
Knot；
The aggregate is white fused alumina, pink fused alumina, aluminum-spinel, and wherein the quality of white fused alumina accounts for the percentage composition of bone meal gross mass
It is 80%, the percentage composition that pink fused alumina, aluminum-spinel gross mass account for bone meal gross mass is 20%；
The powder is industrial alumina powder, metallic aluminium powder, and wherein the quality of industrial alumina powder accounts for the percentage of powder gross mass
Content is 70%, and the percentage composition that the quality of metallic aluminium powder accounts for powder gross mass is 30%%；
The bonding agent is the mixture of carboxymethyl cellulose, benzylcellulose, the matter of carboxymethyl cellulose, benzylcellulose
Amount ratio is 1:1.
Al in the white fused alumina2O3Mass percentage be not less than 98%；The mass percentage of chromium is not low in pink fused alumina
In 15%；The mass percentage of aluminium is not less than 70% in aluminum-spinel, and the mass percentage of magnesium is not low in aluminum-spinel
In 20%；Magnesia mass percentage is not less than 98% in the fused magnesite.
Specific embodiment two:
A kind of preparation method of ladle corundum lining brick, which is characterized in that including following operating procedure:
(1) aggregate is classified according to 0 ~ 1mm of granular size, 1 ~ 3mm, 3 ~ 5mm, 5 ~ 8mm, 0 ~ 1mm, 1 ~ 3mm, 3 ~
The different size of aggregate quality ratio of 5mm, 5 ~ 8mm is 15:35:40:10；
(2) aggregate, powder, bonding agent, water are mixed according to mass values 70:30:8:30, at pug；
(3) pug compression moulding；
(4) molding adobe 350 DEG C dry solidification 36 hours；
(5) it when reaching 1300 DEG C using temperature when ladle baking, maintains 10 hours, forms Ceramic bond, realize when in use just
Step sintering；
The aggregate is white fused alumina, pink fused alumina, aluminum-spinel, fused magnesite, and wherein the quality of white fused alumina accounts for bone meal gross mass
Percentage composition be 60%, pink fused alumina, aluminum-spinel, fused magnesite gross mass account for bone meal gross mass percentage composition be 40%；
The powder is industrial alumina powder, metallic aluminium powder, a alumina powder, and wherein it is total to account for powder for the quality of industrial alumina powder
The percentage composition of quality be 60%, metallic aluminium powder, a alumina powder quality account for powder gross mass percentage composition be 40%%；
The bonding agent is the mixture of benzylcellulose, silester, aluminum sulfate, benzylcellulose, silester, sulfuric acid
The mass values of aluminium are 2:1:1.
Al in the white fused alumina2O3Mass percentage be not less than 98%；The mass percentage of chromium is not low in pink fused alumina
In 15%；The mass percentage of aluminium is not less than 70% in aluminum-spinel, and the mass percentage of magnesium is not low in aluminum-spinel
In 20%；Magnesia mass percentage is not less than 98% in the fused magnesite.
Specific embodiment three:
A kind of preparation method of ladle corundum lining brick, which is characterized in that including following operating procedure:
(1) aggregate is classified according to 0 ~ 1mm of granular size, 1 ~ 3mm, 3 ~ 5mm, 5 ~ 8mm, 0 ~ 1mm, 1 ~ 3mm, 3 ~
The different size of aggregate quality ratio of 5mm, 5 ~ 8mm is 12:40:40:8；
(2) aggregate, powder, bonding agent, water are mixed according to mass values 65:20:8:25, at pug；
(3) pug compression moulding；
(4) adobe dry solidification 36 hours at 350 DEG C are formed；
(5) it when reaching 1400 DEG C using temperature when ladle baking, maintains 5 hours, forms Ceramic bond, realize when in use gradually
Sintering；
The aggregate is white fused alumina, pink fused alumina, aluminum-spinel, fused magnesite, and wherein the quality of white fused alumina accounts for bone meal gross mass
Percentage composition be 70%, aluminum-spinel, fused magnesite gross mass account for bone meal gross mass percentage composition be 30%；
The powder is industrial alumina powder, metallic aluminium powder, a alumina powder, and wherein it is total to account for powder for the quality of industrial alumina powder
The percentage composition of quality is that account for the percentage composition of powder gross mass be 40%% to the quality of 60%, a alumina powder；
The bonding agent is the mixture of carboxymethyl cellulose, benzylcellulose, the matter of carboxymethyl cellulose, benzylcellulose
Amount ratio is 3:1.
Al in the white fused alumina2O3Mass percentage be not less than 98%；The mass percentage of chromium is not low in pink fused alumina
In 15%；The mass percentage of aluminium is not less than 70% in aluminum-spinel, and the mass percentage of magnesium is not low in aluminum-spinel
In 20%；Magnesia mass percentage is not less than 98% in the fused magnesite.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, the description in above embodiments and description is only the present invention
Preference, the present invention do not limited by above-mentioned preference, without departing from the spirit and scope of the present invention, the present invention
Can also there are various changes and modifications, these changes and improvements are both fallen in the scope of protection of present invention.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understand without departing from the principles and spirit of the present invention, these embodiments can be carried out with a variety of variations, modification, replacement
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of preparation method of ladle corundum lining brick, which is characterized in that including following operating procedure:
(1) aggregate, powder, bonding agent, water are according to mass values (60 ~ 70): (20 ~ 30): (3 ~ 8): (10 ~ 30) are mixed,
At pug；
(2) pug compression moulding；
(3) molding adobe 300 ~ 350 DEG C dry solidification 36 ~ 48 hours；
(4) reach 1300 ~ 1400 DEG C using temperature when ladle baking, maintain 5 ~ 10 hours, form Ceramic bond, it is real when in use
Now gradually it is sintered；
The aggregate is white fused alumina, pink fused alumina, aluminum-spinel, fused magnesite, and wherein the quality of white fused alumina accounts for bone meal gross mass
Percentage composition be 60% ~ 80%, the one or more gross mass of pink fused alumina, aluminum-spinel, fused magnesite accounts for bone meal gross mass
Percentage composition be 20% ~ 40%；
The powder is industrial alumina powder, metallic aluminium powder, a alumina powder, and wherein it is total to account for powder for the quality of industrial alumina powder
The percentage composition of quality is 60% ~ 70%, and metallic aluminium powder, a alumina powder one or two gross mass account for the quality of powder gross mass
Percentage composition is 30% ~ 40%；
The bonding agent is carboxymethyl cellulose, at least two in benzylcellulose, silester, aluminum sulfate.
2. a kind of preparation method of ladle corundum lining brick according to claim 1, which is characterized in that in the white fused alumina
Al2O3Mass percentage be not less than 98%；The mass percentage of chromium is not less than 15% in pink fused alumina；Aluminium in aluminum-spinel
Mass percentage be not less than 70%, the mass percentage of magnesium is not less than 20% in aluminum-spinel；In the fused magnesite
Magnesia mass percentage is not less than 98%.
3. a kind of preparation method of ladle corundum lining brick according to claim 1, which is characterized in that the aggregate according to
0 ~ 1mm of grain size, 1 ~ 3mm, 3 ~ 5mm, 5 ~ 8mm classify, the different size of aggregate of 0 ~ 1mm, 1 ~ 3mm, 3 ~ 5mm, 5 ~ 8mm
Mass values are (10 ~ 15): (30 ~ 40): (30 ~ 40): (5 ~ 10).
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| CN201810221370.6A CN110272268A (en) | 2018-03-17 | 2018-03-17 | A kind of preparation method of ladle corundum lining brick |
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| CN201810221370.6A CN110272268A (en) | 2018-03-17 | 2018-03-17 | A kind of preparation method of ladle corundum lining brick |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943149A (en) * | 2021-11-18 | 2022-01-18 | 河南竹林庆州耐火材料有限公司 | Preparation method of scouring-resistant high-performance carbon-free brick |
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| Title |
|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943149A (en) * | 2021-11-18 | 2022-01-18 | 河南竹林庆州耐火材料有限公司 | Preparation method of scouring-resistant high-performance carbon-free brick |
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