CN111807818A - Magnesium-spinel sliding plate brick and preparation method thereof - Google Patents
Magnesium-spinel sliding plate brick and preparation method thereof Download PDFInfo
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- CN111807818A CN111807818A CN202010608386.XA CN202010608386A CN111807818A CN 111807818 A CN111807818 A CN 111807818A CN 202010608386 A CN202010608386 A CN 202010608386A CN 111807818 A CN111807818 A CN 111807818A
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- C—CHEMISTRY; METALLURGY
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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
- C04B35/03—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
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63452—Polyepoxides
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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
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
- C04B35/82—Asbestos; Glass; Fused silica
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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
- C04B2235/3217—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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- 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
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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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- 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
- C04B2235/424—Carbon black
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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
- C04B2235/428—Silicon
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- 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
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/524—Non-oxidic, e.g. borides, carbides, silicides or nitrides
- C04B2235/5248—Carbon, e.g. graphite
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
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- 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
Abstract
The invention provides a novel magnesium-spinel sliding brick and a preparation method thereof, and relates to the technical field of sliding bricks, wherein the sliding brick has the characteristics of long service life, greenness and safety, and comprises the following raw materials in parts by mass: 40-50 parts of fused magnesia, 20-30 parts of fused spinel, 5-6 parts of metal additive, 1-2 parts of reinforcing fiber, 4-10 parts of composite antioxidant, 2-4 parts of carbon black and 4-6 parts of binding agent, wherein the composite antioxidant is aluminum-silicon alloy powder, and the binding agent is any one of phenolic resin or epoxy resin.
Description
Technical Field
The invention relates to the technical field of sliding plate brick preparation, in particular to a magnesium-spinel sliding plate brick and a preparation method thereof.
Background
The slide plate brick is a molten steel control device in the casting process of a continuous casting machine in a steel plant, and can accurately adjust the flow of molten steel from a ladle to a continuous casting tundish, so that the inflow and outflow of molten steel are balanced, and the continuous casting operation is easier to control.
In the prior art, zirconium element is usually required to be added in the preparation process of the sliding plate brick, but the sliding plate brick has the defects of short service life and environmental friendliness, so that the zirconium-free sliding plate brick and the preparation process method thereof need to be developed to prolong the service life of the sliding plate brick, reduce the use of zirconium and achieve environmental friendliness.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a novel magnesium-spinel sliding plate brick and a preparation method thereof, which can solve the technical problems in the background art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the magnesium-spinel sliding brick comprises the following raw materials in parts by mass: 40-50 parts of fused magnesia, 20-30 parts of fused spinel, 5-6 parts of metal additive, 1-2 parts of reinforcing fiber, 4-10 parts of composite antioxidant, 2-4 parts of carbon black and 4-6 parts of binding agent, wherein the composite antioxidant is aluminum-silicon alloy powder, and the binding agent is any one of phenolic resin or epoxy resin.
Preferably, the metal additive is compounded by aluminum powder and silicon powder, wherein the aluminum powder and the silicon powder are compounded according to the mass ratio of 3: 2.
Preferably, the reinforcing fiber is any one of carbon fiber and glass fiber or is compounded according to equal mass ratio.
Preferably, both the carbon fiber and the glass fiber are chopped fibers, and the fiber diameter of the chopped fibers is 10-13 μm.
A preparation method of a magnesium-spinel sliding brick is characterized by comprising the following steps: comprises the following synthesis steps:
stirring: mixing fused magnesia, fused spinel, metal additive, reinforcing fiber, composite antioxidant and carbon black, fully stirring and mixing by using a high-speed stirrer, adding uniform bonding agent into the high-speed stirrer, strongly stirring for 5-10min, and injecting into a sliding plate brick mold;
and (3) drying: placing the injected sliding brick mold into a curing kiln for curing treatment, wherein the curing treatment temperature is 65-78 ℃, keeping for 26-32h, obtaining a blank after demolding, and drying the obtained blank, wherein the drying treatment temperature is 205-215 ℃, and the drying time is 12-18 h;
sintering: putting the dried green body into a high-temperature sintering kiln, adjusting the temperature to 1380-1480 ℃, and calcining for 4-4.5 h;
and (3) drying and cooling: and drying the calcined sliding plate brick again, putting the dried sliding plate brick into a drying kiln for heating at 155-175 ℃, drying for 6-8h, cooling the finished sliding plate brick, and performing a hoop polishing process to obtain the finished sliding plate brick.
Compared with the prior art, the sliding plate brick production raw materials are changed, the addition of zirconium elements is reduced, and meanwhile, substances such as fibers for reinforcing are added, so that the strength of the sliding plate brick is improved, and the service life of the sliding plate brick is prolonged.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
Example 1
A preparation method of a magnesium-spinel sliding brick is characterized by comprising the following steps: comprises the following synthesis steps:
stirring: stirring the following raw materials in parts by mass, namely 40 parts of fused magnesia, 20 parts of fused spinel, 5 parts of aluminum powder-silicon powder mixture (the mass ratio of aluminum powder to silicon powder is 3:2), 1 part of carbon fiber (short fiber), 4 parts of aluminum-silicon alloy powder and 2 parts of carbon black, fully stirring and mixing by using a high-speed stirrer, adding 4 parts of uniform phenolic resin into the high-speed stirrer, strongly stirring for 5-10min, and injecting into a sliding plate brick mold;
and (3) drying: placing the injected slide plate brick mold into a curing kiln for curing treatment, wherein the curing treatment temperature is 70 ℃, keeping the curing treatment temperature for 30 hours, demolding to obtain a green body, and drying the obtained green body, wherein the drying treatment temperature is 210 ℃, and the drying time is 18 hours;
sintering: putting the dried green body into a high-temperature sintering kiln, adjusting the temperature to 1400 ℃, and calcining for 4 hours;
and (3) drying and cooling: and (3) drying the calcined slide plate brick again, putting the dried slide plate brick into a drying kiln to be heated to 170 ℃, drying for 8h, cooling the finished slide plate brick, and performing a hoop polishing process to obtain the finished slide plate brick.
Example 2
A preparation method of a magnesium-spinel sliding brick is characterized by comprising the following steps: comprises the following synthesis steps:
stirring: stirring the following raw materials in parts by mass, wherein 45 parts of fused magnesia, 25 parts of fused spinel, 5.5 parts of aluminum powder-silicon powder mixture (the mass ratio of aluminum powder to silicon powder is 3:2), 1.5 parts of carbon fiber (short fiber), 7 parts of aluminum-silicon alloy powder and 3 parts of carbon black are mixed, fully stirring and mixing by using a high-speed stirrer, adding 5 parts of uniform phenolic resin into the high-speed stirrer, stirring for 5-10min with strong force, and injecting into a sliding plate brick mold;
and (3) drying: placing the injected slide plate brick mold into a curing kiln for curing treatment, wherein the curing treatment temperature is 70 ℃, keeping the curing treatment temperature for 30 hours, demolding to obtain a green body, and drying the obtained green body, wherein the drying treatment temperature is 210 ℃, and the drying time is 18 hours;
sintering: putting the dried green body into a high-temperature sintering kiln, adjusting the temperature to 1400 ℃, and calcining for 4 hours;
and (3) drying and cooling: and (3) drying the calcined slide plate brick again, putting the dried slide plate brick into a drying kiln to be heated to 170 ℃, drying for 8h, cooling the finished slide plate brick, and performing a hoop polishing process to obtain the finished slide plate brick.
Example 3
A preparation method of a magnesium-spinel sliding brick is characterized by comprising the following steps: comprises the following synthesis steps:
stirring: stirring the following raw materials in parts by mass, wherein 50 parts of fused magnesia, 30 parts of fused spinel, 6 parts of aluminum powder-silicon powder mixture (the mass ratio of aluminum powder to silicon powder is 3:2), 2 parts of carbon fiber (short fiber), 10 parts of aluminum-silicon alloy powder and 4 parts of carbon black are mixed, fully stirring and mixing by using a high-speed stirrer, adding 6 parts of uniform phenolic resin into the high-speed stirrer, strongly stirring for 5-10min, and injecting into a sliding brick mold;
and (3) drying: placing the injected slide plate brick mold into a curing kiln for curing treatment, wherein the curing treatment temperature is 70 ℃, keeping the curing treatment temperature for 30 hours, demolding to obtain a green body, and drying the obtained green body, wherein the drying treatment temperature is 210 ℃, and the drying time is 18 hours;
sintering: putting the dried green body into a high-temperature sintering kiln, adjusting the temperature to 1400 ℃, and calcining for 4 hours;
and (3) drying and cooling: and (3) drying the calcined slide plate brick again, putting the dried slide plate brick into a drying kiln to be heated to 170 ℃, drying for 8h, cooling the finished slide plate brick, and performing a hoop polishing process to obtain the finished slide plate brick.
The following table is the experimental data for the three groups of examples described above:
the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (5)
1. A magnesium-spinel sliding brick is characterized in that: the composite material comprises the following raw materials in parts by mass: 40-50 parts of fused magnesia, 20-30 parts of fused spinel, 5-6 parts of metal additive, 1-2 parts of reinforcing fiber, 4-10 parts of composite antioxidant, 2-4 parts of carbon black and 4-6 parts of binding agent, wherein the composite antioxidant is aluminum-silicon alloy powder, and the binding agent is any one of phenolic resin or epoxy resin.
2. The magnesium-spinel skateboard tile of claim 1, wherein: the metal additive is compounded by aluminum powder and silicon powder, wherein the aluminum powder and the silicon powder are compounded according to the mass ratio of 3: 2.
3. The magnesium-spinel skateboard tile of claim 1, wherein: the reinforced fiber is any one of carbon fiber and glass fiber or is compounded in equal mass ratio.
4. A magnesium-spinel skateboard brick according to claim 3, wherein: the carbon fiber and the glass fiber are both chopped fibers, and the fiber diameter is 10-13 μm.
5. A method of making the magnesium-spinel skateboard brick of claim 1, wherein: comprises the following synthesis steps:
stirring: mixing the fused magnesite, the fused spinel, the metal additive, the reinforced fiber, the composite antioxidant and the carbon black in the claim 1, fully stirring and mixing by using a high-speed stirrer, adding a uniform bonding agent into the high-speed stirrer, strongly stirring for 5-10min, and injecting into a sliding plate brick mold;
and (3) drying: placing the injected sliding brick mold into a curing kiln for curing treatment, wherein the curing treatment temperature is 65-78 ℃, keeping for 26-32h, obtaining a blank after demolding, and drying the obtained blank, wherein the drying treatment temperature is 205-215 ℃, and the drying time is 12-18 h;
sintering: putting the dried green body into a high-temperature sintering kiln, adjusting the temperature to 1380-1480 ℃, and calcining for 4-4.5 h;
and (3) drying and cooling: and drying the calcined sliding plate brick again, putting the dried sliding plate brick into a drying kiln for heating at 155-175 ℃, drying for 6-8h, cooling the finished sliding plate brick, and performing a hoop polishing process to obtain the finished sliding plate brick.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010608386.XA CN111807818A (en) | 2020-06-29 | 2020-06-29 | Magnesium-spinel sliding plate brick and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010608386.XA CN111807818A (en) | 2020-06-29 | 2020-06-29 | Magnesium-spinel sliding plate brick and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588494A (en) * | 2013-11-29 | 2014-02-19 | 湖南湘钢瑞泰科技有限公司 | Sliding brick and preparation method thereof |
| CN103864444A (en) * | 2014-03-13 | 2014-06-18 | 无锡市南方耐材有限公司 | Novel slide plate brick for automatic slag-retaining slide gate of converter and preparation method of slide plate brick |
| CN105174983A (en) * | 2015-10-13 | 2015-12-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Magnesite-spinel brick for RH inner liner and preparation method of magnesite-spinel brick |
| CN107032805A (en) * | 2017-04-05 | 2017-08-11 | 海城市中兴高档镁质砖有限公司 | A kind of ladle Ultra-low carbon Periclase spinel carbon brick and preparation method |
| 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 |
| CN109020571A (en) * | 2018-08-27 | 2018-12-18 | 海城利尔麦格西塔材料有限公司 | A kind of anti-erosion magnesia carbon brick and preparation method thereof |
| CN110615670A (en) * | 2019-06-25 | 2019-12-27 | 无锡市南方耐材有限公司 | High-performance magnesium sliding brick and preparation method thereof |
-
2020
- 2020-06-29 CN CN202010608386.XA patent/CN111807818A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588494A (en) * | 2013-11-29 | 2014-02-19 | 湖南湘钢瑞泰科技有限公司 | Sliding brick and preparation method thereof |
| CN103864444A (en) * | 2014-03-13 | 2014-06-18 | 无锡市南方耐材有限公司 | Novel slide plate brick for automatic slag-retaining slide gate of converter and preparation method of slide plate brick |
| CN105174983A (en) * | 2015-10-13 | 2015-12-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Magnesite-spinel brick for RH inner liner and preparation method of magnesite-spinel brick |
| CN107032805A (en) * | 2017-04-05 | 2017-08-11 | 海城市中兴高档镁质砖有限公司 | A kind of ladle Ultra-low carbon Periclase spinel carbon brick and preparation method |
| 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 |
| CN109020571A (en) * | 2018-08-27 | 2018-12-18 | 海城利尔麦格西塔材料有限公司 | A kind of anti-erosion magnesia carbon brick and preparation method thereof |
| CN110615670A (en) * | 2019-06-25 | 2019-12-27 | 无锡市南方耐材有限公司 | High-performance magnesium sliding brick and preparation method thereof |
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Application publication date: 20201023 |
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