CN112745131A - Furnace door glaze-hanging large building block for large-volume coke furnace and production process thereof - Google Patents
Furnace door glaze-hanging large building block for large-volume coke furnace and production process thereof Download PDFInfo
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- CN112745131A CN112745131A CN202011638302.3A CN202011638302A CN112745131A CN 112745131 A CN112745131 A CN 112745131A CN 202011638302 A CN202011638302 A CN 202011638302A CN 112745131 A CN112745131 A CN 112745131A
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- 239000000571 coke Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 48
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 34
- 239000011449 brick Substances 0.000 claims abstract description 32
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 19
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 229910052850 kyanite Inorganic materials 0.000 claims abstract description 17
- 239000010443 kyanite Substances 0.000 claims abstract description 17
- 229910052582 BN Inorganic materials 0.000 claims abstract description 16
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 6
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 229910052570 clay Inorganic materials 0.000 claims description 11
- 239000004927 clay Substances 0.000 claims description 11
- 238000010304 firing Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 2
- 238000011068 loading method Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 9
- 230000035939 shock Effects 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000011469 building brick Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 239000000383 hazardous chemical Substances 0.000 description 2
- 231100000206 health hazard Toxicity 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 229940106265 charcoal Drugs 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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
- C04B35/10—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
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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
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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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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- 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
- C04B2235/3427—Silicates other than clay, e.g. water glass
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- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
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Abstract
The invention relates to the technical field of metallurgical coke oven door bricks, and discloses a large-volume coke oven door glazed large building block and a production process thereof, wherein the material formula comprises the following components in parts by weight: alumina powder: 45% -50%, hexagonal boron nitride: 10% -15%, zirconia powder 10% -15%, kaolin: 5% -10%, binder: 5% -10%; and (3) kyanite: 3% -5%: calcium carbonate: 1% -5% of ceramic micro powder: 1 to 3 percent. According to the large-volume oven door glazed large building block and the production process thereof, the capability of blocking ultraviolet irradiation of the large building block is improved, so that ultraviolet rays are well absorbed by the large building block, the phenomenon that the ultraviolet rays reflect under the surface action of a coke oven to cause harm to workers is avoided, the ultraviolet rays are absorbed on the surface of the large oven door glazed building block, and meanwhile, the performance of thermal shock degree of a large building brick can be improved by adding zirconium oxide, and the corrosion resistance of the large building block is ensured.
Description
Technical Field
The invention relates to the technical field of metallurgical coke oven door bricks, in particular to a large glazed building block for a large-volume coke oven door and a production process thereof.
Background
Coke ovens, a furnace typically built of refractory bricks and refractory blocks, are used to char coal to produce coke. A furnace for refining coke by coal. Is the main thermal equipment for coking. The modern coke oven is a horizontal chamber type coke oven which mainly aims at producing metallurgical coke and can recover coking chemical products, and comprises an oven body and accessory equipment. The coke oven body consists of a furnace top, a combustion chamber, a carbonization chamber, a chute area, a regenerator and the like, and is connected with a chimney through a flue.
In the process of building a coke oven, large building blocks are needed to build the oven door.
The large brick blocks used for building the coke oven at present can not absorb ultraviolet rays well, so that the ultraviolet rays are reflected under the action of the surface of the coke oven, health hazards can be caused to workers, the ultraviolet rays can not be absorbed when being irradiated on the surface of the coke oven, and the large brick blocks used at present have poor thermal shock resistance and low corrosion resistance, so that the large glazed furnace door building block for the large-volume coke oven and the production process thereof are provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a large glazed furnace door building block for a large-volume coke furnace and a production process thereof, and solves the problems that the existing large building block used for constructing the coke furnace can not absorb ultraviolet rays well, so that the ultraviolet rays are reflected under the surface action of the coke furnace, health hazards can be caused to workers, the ultraviolet rays can not be absorbed when being irradiated on the surface of the coke furnace, and the existing large building block has poor thermal shock resistance and low corrosion resistance.
In order to improve the capability of blocking ultraviolet irradiation of the large building block, so that the large building block can better absorb ultraviolet rays, the damage to workers caused by the reflection of the ultraviolet rays under the surface action of the coke oven is avoided, the ultraviolet rays are absorbed on the surface of the glazed large building block of the oven door of the coke oven, the thermal shock resistance degree performance of the large building block is improved, and the corrosion resistance of the large building block is also ensured, the invention provides the following technical scheme: the large glazed furnace door building block for large-volume coke oven and its production process include the following components: alumina powder: 45% -50%, hexagonal boron nitride: 10% -15%, zirconia powder 10% -15%, kaolin: 5% -10%, binder: 5% -10%; and (3) kyanite: 3% -5%: calcium carbonate: 1% -5% of ceramic micro powder: 1 to 3 percent.
Preferably, the material formula comprises the following components in parts by weight: alumina powder: 47%, hexagonal boron nitride: 13%, zirconium oxide powder 13%, clay: 8% of a binder: 7 percent; and (3) kyanite: 4%: calcium carbonate: 3% and ceramic micro powder: 2 percent.
Preferably, the material formula comprises the following components in parts by weight: alumina powder: 45%, hexagonal boron nitride: 10%, zirconia powder 10%, clay: 5% of a binder: 5 percent; and (3) kyanite: 3%: calcium carbonate: 1% and ceramic micro powder: 1 percent.
Preferably, the material formula comprises the following components in parts by weight: alumina powder: 50%, hexagonal boron nitride: 15%, zirconia powder 15%, clay: 10% of a binder: 10 percent; and (3) kyanite: 5%: calcium carbonate: 5% and ceramic micro powder: 3 percent.
Preferably, the furnace door glazed large block for large volume coke oven and the production process thereof according to claims 1-4, comprising the following steps:
the method comprises the following steps: taking alumina powder, hexagonal boron nitride, clay and kyanite, fully stirring and mixing, and adding a certain amount of water for mixing in the mixing process;
step two: mixing several materials of zirconium oxide powder, floating beads, a binder, calcium carbonate and ceramic micro powder, then putting the materials mixed in the step one into the mixture to carry out mixing operation, and simultaneously uniformly mixing the materials by using external water;
step three: after the mixture is finished, a material cavity of the forming die is divided into two parts by a partition plate, and the two parts are formed by adopting vibration forming or a press machine;
step four: preprocessing the green bricks before kiln loading, and putting the green bricks to a scale according to the sintering shrinkage;
step five: when the brick is placed in a kiln, a side-mounting method is adopted, the green bricks are stacked uniformly, the fire paths are consistent, the firing temperature is controlled to be 1600 +/-10 ℃, and the brick is fired after heat preservation is carried out for 8 hours.
Preferably, the device for mixing and stirring in the first step and the second step is a grinder.
Preferably, in the fifth step, cooling treatment is performed after the brick is fired, and in the cooling stage, the cooling speed cannot be too high, and gradual cooling operation is adopted.
Compared with the prior art, the invention provides the furnace door glaze-hanging large building block for the large-volume coke furnace and the production process thereof, and the furnace door glaze-hanging large building block has the following beneficial effects:
the furnace door glaze-hanging large building block for the large-volume coke furnace and the production process thereof are characterized in that the furnace door glaze-hanging large building block is prepared by the following steps of: 45% -50%, hexagonal boron nitride: 10% -15%, zirconia powder 10% -15%, kaolin: 5% -10%, binder: 5% -10%; and (3) kyanite: 3% -5%: calcium carbonate: 1% -5% of ceramic micro powder: 1% -3% are mixed according to a certain percentage, so that the blank is extruded into a brick blank, then the blank is placed in a kiln, the brick blanks are stacked uniformly, the fire paths are consistent, the firing temperature is controlled to be 1600 +/-10 ℃, the firing of the brick can be completed after the brick is kept for 8 hours, the capability of blocking ultraviolet irradiation of the large building block can be further improved by adding calcium carbonate and ceramic micro powder, so that the ultraviolet rays can be well absorbed by the large building block, the harm to workers caused by the reflection of the ultraviolet rays under the surface action of a coke oven is avoided, the ultraviolet rays are absorbed on the surface of the large glazed building block of the oven door of the coke oven, and the thermal shock resistance of the large building block can be improved by adding the kyanite, and the corrosion resistance of the large building block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the contents in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The large glazed furnace door building block for large-volume coke oven and its production process include the following components: alumina powder: 45% -50%, hexagonal boron nitride: 10% -15%, zirconia powder 10% -15%, kaolin: 5% -10%, binder: 5% -10%; and (3) kyanite: 3% -5%: calcium carbonate: 1% -5% of ceramic micro powder: 1 to 3 percent.
Example 1
The preparation method comprises the following specific steps:
1) alumina powder: 47%, hexagonal boron nitride: 13%, zirconium oxide powder 13%, clay: 8% of a binder: 7 percent; and (3) kyanite: 4%: calcium carbonate: 3% and ceramic micro powder: 2 percent of the mixture is put into a stirrer according to a certain proportion, and the mixture is stirred uniformly;
2) after the mixture is finished, a material cavity of the forming die is divided into two parts by a partition plate, the two parts are formed by adopting a vibration forming or pressing machine, then the green bricks are placed in a kiln, a side-mounting method is adopted during kiln placing, the green bricks are uniformly stacked, the fire paths are consistent, the firing temperature is controlled to be 1600 +/-10 ℃, and the heat preservation is carried out for 8 hours, so that the firing of the bricks can be finished.
Example 2
The preparation method comprises the following specific steps:
1) alumina powder: 45%, hexagonal boron nitride: 10%, zirconia powder 10%, clay: 5% of a binder: 5 percent; and (3) kyanite: 3%: calcium carbonate: 1% and ceramic micro powder: 1 percent of the mixture is put into a stirrer according to a certain proportion, and the mixture is stirred uniformly;
2) after the mixture is finished, a material cavity of the forming die is divided into two parts by a partition plate, the two parts are formed by adopting a vibration forming or pressing machine, then the green bricks are placed in a kiln, a side-mounting method is adopted during kiln placing, the green bricks are uniformly stacked, the fire paths are consistent, the firing temperature is controlled to be 1600 +/-10 ℃, and the heat preservation is carried out for 8 hours, so that the firing of the bricks can be finished.
Example 3
The preparation method comprises the following specific steps:
1) alumina powder: 50%, hexagonal boron nitride: 15%, zirconia powder 15%, clay: 10% of a binder: 10 percent; and (3) kyanite: 5%: calcium carbonate: 5% and ceramic micro powder: 3 percent of the mixture is put into a stirrer according to a certain proportion, and the mixture is stirred uniformly;
2) after the mixture is finished, a material cavity of the forming die is divided into two parts by a partition plate, the two parts are formed by adopting a vibration forming or pressing machine, then the green bricks are placed in a kiln, a side-mounting method is adopted during kiln placing, the green bricks are uniformly stacked, the fire paths are consistent, the firing temperature is controlled to be 1600 +/-10 ℃, and the heat preservation is carried out for 8 hours, so that the firing of the bricks can be finished.
Wherein, the mixing and stirring device used in the first step and the second step is a grinder; and step five, performing cooling treatment after the brick is fired, wherein in the cooling stage, the cooling speed cannot be too high, and gradual cooling operation is adopted.
In conclusion, according to the test operations of the embodiment 1, the embodiment 2 and the embodiment 3, the best quality large glazed building block for the oven door of the large-volume coke oven and the production process thereof are selected, so that the damage to workers caused by the reflection of ultraviolet rays under the surface action of the coke oven is avoided, the ultraviolet rays are absorbed on the surface of the large glazed building block for the oven door of the coke oven, and the thermal shock resistance degree performance of the large brick can be improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The large glazed furnace door building block for large-volume coke oven and its production process features that the material has the components in the recipe including: alumina powder: 45% -50%, hexagonal boron nitride: 10% -15%, zirconia powder 10% -15%, kaolin: 5% -10%, binder: 5% -10%; and (3) kyanite: 3% -5%: calcium carbonate: 1% -5% of ceramic micro powder: 1 to 3 percent.
2. The large glazed furnace door block for the large-volume coke furnace and the production process thereof according to claim 1, wherein the large glazed furnace door block comprises the following components: the material formula comprises the following components in parts by weight: alumina powder: 47%, hexagonal boron nitride: 13%, zirconium oxide powder 13%, clay: 8% of a binder: 7 percent; and (3) kyanite: 4%: calcium carbonate: 3% and ceramic micro powder: 2 percent.
3. The large glazed furnace door block for the large-volume coke furnace and the production process thereof according to claim 1, wherein the large glazed furnace door block comprises the following components: the material formula comprises the following components in parts by weight: alumina powder: 45%, hexagonal boron nitride: 10%, zirconia powder 10%, clay: 5% of a binder: 5 percent; and (3) kyanite: 3%: calcium carbonate: 1% and ceramic micro powder: 1 percent.
4. The large glazed furnace door block for the large-volume coke furnace and the production process thereof according to claim 1, wherein the large glazed furnace door block comprises the following components: the material formula comprises the following components in parts by weight: alumina powder: 50%, hexagonal boron nitride: 15%, zirconia powder 15%, clay: 10% of a binder: 10 percent; and (3) kyanite: 5%: calcium carbonate: 5% and ceramic micro powder: 3 percent.
5. The large glazed furnace door block for the large-volume coke furnace and the production process thereof as claimed in claims 1 to 4, wherein: the method comprises the following steps:
the method comprises the following steps: taking alumina powder, hexagonal boron nitride, clay and kyanite, fully stirring and mixing, and adding a certain amount of water for mixing in the mixing process;
step two: mixing several materials of zirconium oxide powder, floating beads, a binder, calcium carbonate and ceramic micro powder, then putting the materials mixed in the step one into the mixture to carry out mixing operation, and simultaneously uniformly mixing the materials by using external water;
step three: after the mixture is finished, a material cavity of the forming die is divided into two parts by a partition plate, and the two parts are formed by adopting vibration forming or a press machine;
step four: pre-grinding the green brick before kiln loading, and setting the green brick according to the sintering shrinkage;
step five: when the brick is placed in a kiln, a side-mounting method is adopted, the green bricks are stacked uniformly, the fire paths are consistent, the firing temperature is controlled to be 1600 +/-10 ℃, and the brick is fired after heat preservation is carried out for 8 hours.
6. The large glazed furnace door block for the large-volume coke furnace and the production process thereof according to claim 5, wherein the large glazed furnace door block comprises the following components: the device for mixing and stirring in the first step and the second step is a grinder.
7. The large glazed furnace door block for the large-volume coke furnace and the production process thereof according to claim 5, wherein the large glazed furnace door block comprises the following components: and step five, performing cooling treatment after the brick is fired, wherein in the cooling stage, the cooling speed cannot be too high, and gradual cooling operation is adopted.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455955A (en) * | 2021-12-30 | 2022-05-10 | 山东潍耐节能材料有限公司 | Preparation method of high-efficiency energy-saving floating bead brick for top-loading coke oven |
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| CN102910935A (en) * | 2012-10-25 | 2013-02-06 | 佛山市中国科学院上海硅酸盐研究所陶瓷研发中心 | Production method of porous ceramic composite tiles |
| CN105330159A (en) * | 2015-12-07 | 2016-02-17 | 河南省宏达炉业有限公司 | Glaze of coke oven door lining brick and processing method thereof |
| CN109180196A (en) * | 2018-09-21 | 2019-01-11 | 山东潍耐节能材料有限公司 | A kind of new Type Coke Oven high-strength float bead heat insulation brick and preparation method thereof |
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| CN109180196A (en) * | 2018-09-21 | 2019-01-11 | 山东潍耐节能材料有限公司 | A kind of new Type Coke Oven high-strength float bead heat insulation brick and preparation method thereof |
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