CN112707740A - Siliceous heat-insulating brick for coke oven and production process thereof - Google Patents
Siliceous heat-insulating brick for coke oven and production process thereof Download PDFInfo
- Publication number
- CN112707740A CN112707740A CN202011636915.3A CN202011636915A CN112707740A CN 112707740 A CN112707740 A CN 112707740A CN 202011636915 A CN202011636915 A CN 202011636915A CN 112707740 A CN112707740 A CN 112707740A
- Authority
- CN
- China
- Prior art keywords
- heat
- siliceous
- insulating brick
- brick
- percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011449 brick Substances 0.000 title claims abstract description 67
- 239000000571 coke Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 27
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 20
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 19
- 239000010431 corundum Substances 0.000 claims abstract description 19
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 18
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 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 16
- 229910052850 kyanite Inorganic materials 0.000 claims abstract description 16
- 239000010443 kyanite Substances 0.000 claims abstract description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011469 building brick Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 229940106265 charcoal Drugs 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- 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
- C04B35/14—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 silica
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
-
- 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
- C04B2235/32—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
-
- 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
- C04B2235/34—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
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention relates to the technical field of bricks for metallurgical, chemical and other thermal equipment, and discloses a siliceous heat-insulating brick for a coke oven for the first time in China, wherein the material formula comprises the following components in parts by weight: silica and silicon dioxide-based: 75-80%, silicon micropowder 10-15%, sodium oxide: 0.1% -0.2%, kyanite: 2% -6%, mullite: 2% -6%, corundum: 1% -3%; 5 to 10 percent of silica sol. According to the siliceous heat-insulating brick for the coke oven and the production process thereof, corundum is added to ensure that the thermal shock performance is improved to a certain extent, the high-temperature creep resistance is better, the low thermal stability of the siliceous heat-insulating refractory brick is ensured, mullite and corundum are added to further ensure the heat resistance of the siliceous heat-insulating brick, the strength of the siliceous heat-insulating brick is improved, the siliceous heat-insulating brick can be directly contacted with flame to be used as a lining structure material, and the design of a new heat-insulating energy-saving structure of the coke oven and the structural improvement of a traditional high-temperature kiln are guaranteed.
Description
Technical Field
The invention relates to the technical field of building bricks, in particular to a siliceous heat-insulating brick for a coke oven 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.
The silicon heat-insulating refractory brick is a heat-insulating refractory product which is prepared by taking silica as a main raw material and has the SiO2 content of not less than 91 percent. The siliceous heat-insulating refractory brick has heat-insulating performance, keeps the characteristics of silica brick to a great extent, has high refractoriness under load, slightly expands volume in the heating process, and enhances the integrity of the kiln. The silica heat-insulating refractory brick is produced with fine crushed silica as material and through adding partial waste silica brick or waste silica heat-insulating refractory brick powder, mineralizer, inflammable additive, etc. Adding water into a mixing machine according to a certain proportion to mix into pug, mechanically or manually forming, and placing the dried green bricks into a kiln when the residual moisture is less than 0.5%. In order to prevent the occurrence of cracks in the product due to severe volume expansion caused by the transformation of SiO2 polycrystal, a relatively slow temperature increase and decrease speed is required at the time of firing.
Although the prior siliceous heat-insulating refractory brick has good fire resistance, the prior siliceous heat-insulating refractory brick has poor thermal shock property, poor high-temperature creep resistance and low strength, thereby causing the siliceous heat-insulating refractory brick to have low thermal stability, and providing the siliceous heat-insulating brick for the coke oven and the production process thereof.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a siliceous heat-insulating brick for a coke oven and a production process thereof, which solve the problem that the prior siliceous heat-insulating refractory brick has poor thermal shock performance, poor high-temperature creep resistance and low strength so as to cause low thermal stability performance of the siliceous heat-insulating refractory brick although the refractory strength is good. In order to realize the purposes of ensuring that the thermal shock performance is improved to a certain extent, the high-temperature creep resistance is better, the thermal stability of the siliceous heat-insulating refractory brick is low, the heat resistance of the siliceous heat-insulating brick is further ensured, the strength of the siliceous heat-insulating brick is improved, and the siliceous heat-insulating brick combined by the alumina hollow spheres can be directly contacted with flame to be used as a lining structural material, the invention provides the following technical scheme: the siliceous heat-insulating brick for the coke oven comprises the following components in parts by weight: silicon dioxide: 60% -80%, 10% -20% of silicon micropowder, sodium oxide: 0.1% -0.2%, sodium oxide: 0.1% -0.2%, kyanite: 2% -6%, mullite: 2% -6%, corundum: 1% -5%, hollow alumina spheres: 8% -20%; silica sol: 5 to 10 percent.
Preferably, the material formula comprises the following components in parts by weight: silicon dioxide: 60%, 10% of silicon micropowder, sodium oxide: 0.1, sodium oxide: 0.2%, kyanite: 2%, mullite: 6%, corundum: 5% and alumina hollow spheres: 20 percent; silica sol: 11.7 percent.
Preferably, the material formula comprises the following components in parts by weight: silicon dioxide: 70%, silicon micropowder 13%, sodium oxide: 0.2%, sodium oxide: 0.1%, kyanite: 3% of mullite: 3% and corundum: 3% of alumina hollow spheres: 15 percent; silica sol: 5.7 percent.
Preferably, the material formula comprises the following components in parts by weight: silicon dioxide: 80%, silicon micropowder 16%, sodium oxide: 0.1%, sodium oxide: 0.1%, kyanite: 2%, mullite: 2%, corundum: 1% and hollow alumina spheres: 8 percent; silica sol: 6.8 percent.
Preferably, the process for producing siliceous heat-insulating bricks for coke ovens according to claims 1 to 4, comprising the following steps:
1) taking silicon dioxide, sodium oxide and sodium oxide, fully stirring and mixing, and adding a certain amount of silica sol in the mixing process to continue mixing;
2) mixing materials of kyanite, mullite, corundum and alumina hollow spheres, and uniformly mixing silicon dioxide, sodium oxide and outer silica sol glass according to the proportion requirement;
3) 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 pressurization or mechanical pressing;
4) maintaining the brick blank body at room temperature for 24-48 h, then carrying out demoulding treatment, and drying at 100-120 ℃ for 20-30 h after demoulding;
5) and finally, putting the brick blank into a kiln, and keeping the temperature for 3 to 6 hours at 1350 to 1500 ℃ to sinter.
Preferably, the pre-firing stage is a combustible combustion stage in the period of 300 to 600 ℃, and the temperature needs to be slowly increased;
preferably, the cooling stage adopts slow-fast-slow multi-stage cooling.
Compared with the prior art, the invention provides the siliceous insulating brick for the coke oven and the production process thereof, and the siliceous insulating brick has the following beneficial effects:
the siliceous heat-insulating brick for the coke oven is prepared by mixing silicon dioxide: 60% -80%, 10% -20% of silicon micropowder, sodium oxide: 0.1% -0.2%, kyanite: 2% -6%, mullite: 2% -6%, corundum: 1% -5%, hollow alumina spheres: 8% -20%; silica sol: 5% -10% are mixed according to a certain percentage proportion, then the siliceous insulating brick is formed, then the brick body is subjected to heat preservation and firing, so that the siliceous insulating brick can be obtained, the thermal shock performance is ensured to be improved to a certain extent by adding the alumina hollow spheres, the high-temperature creep resistance is better, the low thermal stability of the siliceous insulating refractory brick is ensured, the heat resistance of the siliceous insulating brick is further ensured by adding mullite corundum, the strength of the siliceous insulating brick is improved, the siliceous insulating brick combined by the alumina hollow spheres can be directly contacted with flame to be used as a lining structural material, and the design of a coke oven structure and the reconstruction of a traditional high-temperature kiln structure are guaranteed.
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 siliceous heat-insulating brick for the coke oven comprises the following components in parts by weight: silicon dioxide: 60% -80%, 10% -20% of silicon micropowder, sodium oxide: 0.1% -0.2%, kyanite: 2% -6%, mullite: 2% -6%, corundum: 1% -5%, hollow alumina spheres: 8% -20%; silica sol: 5 to 10 percent of
Example 1
The preparation method comprises the following specific steps:
1) and mixing the following silicon dioxide: 60%, 10% -20% of silicon micropowder, sodium oxide: 0.2%, kyanite: 2%, mullite: 6%, corundum: 5% and alumina hollow spheres: 20 percent; silica sol: 11.7 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 board, the two parts are formed by adopting vibration pressurization or mechanical pressing, then the brick blank is maintained for 24-48 h at room temperature, then demoulding treatment is carried out, drying is carried out for 20-30 h at 100-120 ℃ after demoulding, and finally the brick blank is placed in a kiln and is subjected to heat preservation for 3-6 h at 1350-1500 ℃ for sintering.
Example 2
The preparation method comprises the following specific steps:
1) and mixing the following silicon dioxide: 70%, 10% -20% of silicon micropowder, sodium oxide: 0.2%, kyanite: 3% of mullite: 3% and corundum: 3% of alumina hollow spheres: 15 percent; silica sol: 5.7 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 board, the two parts are formed by adopting vibration pressurization or mechanical pressing, then the brick blank is maintained for 24-48 h at room temperature, then demoulding treatment is carried out, drying is carried out for 20-30 h at 100-120 ℃ after demoulding, and finally the brick blank is placed in a kiln and is subjected to heat preservation for 3-6 h at 1350-1500 ℃ for sintering.
Example 2
The preparation method comprises the following specific steps:
1) and mixing the following silicon dioxide: 80%, 10% -20% of silicon micropowder, sodium oxide: 0.1%, kyanite: 2%, mullite: 2%, corundum: 1% and hollow alumina spheres: 8 percent; silica sol: 6.8 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 board, the two parts are formed by adopting vibration pressurization or mechanical pressing, then the brick blank is maintained for 24-48 h at room temperature, then demoulding treatment is carried out, drying is carried out for 20-30 h at 100-120 ℃ after demoulding, and finally the brick blank is placed in a kiln and is subjected to heat preservation for 3-6 h at 1350-1500 ℃ for sintering.
In the early stage of firing, the combustible is in the combustion stage at 300-600 ℃, the temperature needs to be slowly raised to facilitate the discharge of the combustible, otherwise, the combustible is carbonized, and the brick body is black; in the cooling stage, slow-fast-slow multi-stage cooling is adopted, the cooling speed cannot be too fast, otherwise, the bricks are easy to crack.
In summary, after the test operations of the embodiments 1, 2 and 3, the siliceous heat insulating brick with the best quality is selected as the siliceous heat insulating brick for the coke oven, so as to further ensure the heat resistance of the siliceous heat insulating brick and improve the strength of the siliceous heat insulating brick, and the siliceous heat insulating brick combined by the alumina hollow spheres can be directly contacted with flame to be used as the lining structural material.
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 siliceous insulating brick for the coke oven is characterized in that: the material formula comprises the following components in parts by weight: silicon dioxide: 60% -80%, silicon micropowder 10% -15%, sodium oxide: 0.1% -0.2%, kyanite: 2% -6%, mullite: 2% -6%, corundum: 1% -5%, hollow alumina spheres: 8% -20%; silica sol: 5 to 10 percent.
2. The siliceous heat-insulating brick for coke ovens according to claim 1, characterized in that: the material formula comprises the following components in parts by weight: silicon dioxide: 60%, 10% of silicon micropowder, sodium oxide: 0.2%, kyanite: 2%, mullite: 6%, corundum: 5% and alumina hollow spheres: 20 percent; silica sol: 11.7 percent.
3. The siliceous heat-insulating brick for coke ovens according to claim 1, characterized in that: the material formula comprises the following components in parts by weight: silicon dioxide: 70%, silicon micropowder 13%, sodium oxide: 0.2%, kyanite: 3% of mullite: 3% and corundum: 3% of alumina hollow spheres: 15 percent; silica sol: 5.7 percent.
4. The siliceous heat-insulating brick for coke ovens according to claim 1, characterized in that: the material formula comprises the following components in parts by weight: silicon dioxide: 80%, silicon micropowder 16%, sodium oxide: 0.1%, kyanite: 2%, mullite: 2%, corundum: 1% and hollow alumina spheres: 8 percent; silica sol: 6.8 percent.
5. The production process of siliceous heat-insulating brick for coke oven according to claims 1 to 4, characterized by comprising the following steps: the method comprises the following steps:
1) taking silicon dioxide, sodium oxide and sodium oxide, fully stirring and mixing, and adding a certain amount of water glass in the mixing process to continuously mix;
2) selecting and mixing several materials of kyanite, mullite, corundum and alumina hollow spheres, and uniformly mixing silicon dioxide, sodium oxide and additional silica sol according to the proportioning requirement;
3) 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;
4) maintaining the brick blank body at room temperature for 24-48 h, then carrying out demoulding treatment, and drying at 100-120 ℃ for 20-30 h after demoulding;
5) and finally, placing the brick blank into a kiln, and preserving the heat for 20 to 28 hours at 1350 to 1500 ℃ to sinter the brick blank.
6. The siliceous heat-insulating brick for coke ovens according to claim 5, characterized in that: in the early stage of firing, the combustible material is in the stage of combustion at 300-600 ℃, and the temperature needs to be raised slowly.
7. The siliceous heat-insulating brick for coke ovens according to claim 5, characterized in that: the cooling stage adopts slow-fast-slow multi-stage cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011636915.3A CN112707740A (en) | 2020-12-31 | 2020-12-31 | Siliceous heat-insulating brick for coke oven and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011636915.3A CN112707740A (en) | 2020-12-31 | 2020-12-31 | Siliceous heat-insulating brick for coke oven and production process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112707740A true CN112707740A (en) | 2021-04-27 |
Family
ID=75547896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011636915.3A Pending CN112707740A (en) | 2020-12-31 | 2020-12-31 | Siliceous heat-insulating brick for coke oven and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112707740A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116496077A (en) * | 2023-06-27 | 2023-07-28 | 山东潍耐节能材料有限公司 | Refractory material and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB539957A (en) * | 1940-04-25 | 1941-09-30 | Leonard Reginald Johnstone Luc | Improvements in or relating to refractory material, such as high temperature insulation bricks for furnace linings and the like |
| CN101134676A (en) * | 2006-08-30 | 2008-03-05 | 宝山钢铁股份有限公司 | Fire resistive material for coke oven door |
| CN102167621A (en) * | 2011-01-21 | 2011-08-31 | 武汉科技大学 | Aluminum oxide hollow sphere light insulating brick and preparation method thereof |
| CN102230738A (en) * | 2011-06-06 | 2011-11-02 | 浙江大学 | Mullite structure and thermal insulation integrated composite brick and preparation method |
| CN103864403A (en) * | 2014-04-03 | 2014-06-18 | 武汉科技大学 | Mullite light heat-insulation brick based on kyanite tailings and manufacturing method of brick |
| CN106673678A (en) * | 2016-12-27 | 2017-05-17 | 武汉科技大学 | Light-weight and heat-isolation mullite bricks and preparation method thereof |
| CN108997026A (en) * | 2018-09-19 | 2018-12-14 | 山东潍耐节能材料有限公司 | A kind of strong lightweight thermal insulation brick of roaster superelevation and preparation method thereof |
-
2020
- 2020-12-31 CN CN202011636915.3A patent/CN112707740A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB539957A (en) * | 1940-04-25 | 1941-09-30 | Leonard Reginald Johnstone Luc | Improvements in or relating to refractory material, such as high temperature insulation bricks for furnace linings and the like |
| CN101134676A (en) * | 2006-08-30 | 2008-03-05 | 宝山钢铁股份有限公司 | Fire resistive material for coke oven door |
| CN102167621A (en) * | 2011-01-21 | 2011-08-31 | 武汉科技大学 | Aluminum oxide hollow sphere light insulating brick and preparation method thereof |
| CN102230738A (en) * | 2011-06-06 | 2011-11-02 | 浙江大学 | Mullite structure and thermal insulation integrated composite brick and preparation method |
| CN103864403A (en) * | 2014-04-03 | 2014-06-18 | 武汉科技大学 | Mullite light heat-insulation brick based on kyanite tailings and manufacturing method of brick |
| CN106673678A (en) * | 2016-12-27 | 2017-05-17 | 武汉科技大学 | Light-weight and heat-isolation mullite bricks and preparation method thereof |
| CN108997026A (en) * | 2018-09-19 | 2018-12-14 | 山东潍耐节能材料有限公司 | A kind of strong lightweight thermal insulation brick of roaster superelevation and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 许晓海等: "《耐火材料技术手册》", 31 January 2000, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116496077A (en) * | 2023-06-27 | 2023-07-28 | 山东潍耐节能材料有限公司 | Refractory material and preparation method thereof |
| CN116496077B (en) * | 2023-06-27 | 2023-08-29 | 山东潍耐节能材料有限公司 | Refractory material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103641501B (en) | Impervious low-aluminum mullite brick for blast furnace and preparation method thereof | |
| CN102491762B (en) | High-temperature fireproof kiln material and preparing method thereof | |
| CN107089835A (en) | Carbon calciner andalusite mullite composite brick and preparation method thereof | |
| CN106242593A (en) | Low creep andalusite composite refractory brick and its preparation method and application | |
| CN106187240A (en) | Low-creep refractory brick and its preparation method and application | |
| CN107032811B (en) | Low-iron and low-aluminum mullite brick for coke oven and preparation method thereof | |
| CN112457031A (en) | Low-creep high-alumina brick and preparation method thereof | |
| CN101497527A (en) | Light forsterite heat insulating brick and method of manufacturing the same | |
| CN1323985C (en) | Periclase-olivine light thermal-insulated fireproof materials and method for preparing same | |
| CN106187241A (en) | Low creep high RUL refractory brick and its preparation method and application | |
| CN112707740A (en) | Siliceous heat-insulating brick for coke oven and production process thereof | |
| CN102285812A (en) | Magnesium-aluminium-titanium structure and thermal insulation integrated composite brick and preparation method thereof | |
| CN106278202A (en) | Light fire brick and preparation method thereof | |
| CN110282957A (en) | A kind of manufacturing method of the magnesia insulating brick of vanadium-nitrogen alloy sintering furnace | |
| CN103833396B (en) | High-strength high-alumina brick prepared from homogenized alumina for calcium carbide furnace and preparation method thereof | |
| CN106242542A (en) | Mullite composite refractory brick and its preparation method and application | |
| CN101913891B (en) | Refractory bricks for flue walls of carbon anode baking furnaces and preparation method thereof | |
| CN106518114B (en) | The manufacture craft of ultralow-porosity, low thermal expansion fireclay refractory | |
| CN100429177C (en) | Mg-Al light thermal-insulated fireproof materials and method for preparing same | |
| CN101811875A (en) | Production method of mullite brick | |
| KR102125945B1 (en) | Composition of clay roofing tiles using nano aluminosilicate and method for producing same | |
| US2567088A (en) | Refractory material and method of making | |
| CN101830714A (en) | Alumina-silicon nitride iron compound abrasive brick for large-size cement kiln and manufacture method thereof | |
| CN112898002A (en) | Heat-resistant porcelain fired by spodumene raw material and production process thereof | |
| CN110282987A (en) | The manufacturing method of vanadium-nitrogen alloy sintering furnace magnesium aluminate spinel vacuum insulating brick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210427 |