CN116947513A - Preparation method of corbel material and corbel brick of coke dry quenching furnace - Google Patents
Preparation method of corbel material and corbel brick of coke dry quenching furnace Download PDFInfo
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- CN116947513A CN116947513A CN202310984128.5A CN202310984128A CN116947513A CN 116947513 A CN116947513 A CN 116947513A CN 202310984128 A CN202310984128 A CN 202310984128A CN 116947513 A CN116947513 A CN 116947513A
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- bracket
- corbel
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- 239000011449 brick Substances 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000010791 quenching Methods 0.000 title claims abstract description 21
- 230000000171 quenching effect Effects 0.000 title claims abstract description 21
- 239000000571 coke Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 28
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 22
- 239000010431 corundum Substances 0.000 claims abstract description 22
- 229910052849 andalusite Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 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 9
- 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 8
- 229910052850 kyanite Inorganic materials 0.000 claims abstract description 8
- 239000010443 kyanite Substances 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 150000004645 aluminates Chemical class 0.000 claims abstract description 3
- 239000004568 cement Substances 0.000 claims abstract description 3
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000007580 dry-mixing Methods 0.000 claims description 2
- 238000010008 shearing Methods 0.000 abstract description 2
- 241000276425 Xiphophorus maculatus Species 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 8
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 7
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 classes of mullite silicon carbide Chemical class 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 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 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000005303 weighing Methods 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
- C04B35/10—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
-
- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
-
- 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
- C04B2235/32—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)
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a preparation method of a bracket material and a bracket brick of a coke dry quenching furnace, wherein the bracket material comprises the following components in percentage by weight: 39-72% of platy corundum, 8-15% of andalusite powder, 8-15% of kyanite powder, 3-8% of activated alumina micropowder, 2-7% of aluminate cement and 2-7% of silica fume; the bracket brick is prepared by adopting a casting molding method; the kyanite and andalusite are decomposed and expanded in sections according to different temperatures, so that the sinking problem caused by bracket creep is exactly solved; the bracket brick prepared by the method has larger thickness, and the brick body is more difficult to break as the shearing resistance in the vertical direction is higher.
Description
Technical Field
The invention relates to a refractory material and a preparation method of the refractory material, in particular to a bracket material of a coke dry quenching furnace and a preparation method of a bracket brick.
Background
With the increasing strictness of environmental protection requirements, the dry quenching furnace has become an indispensable part of the coking industry, the service life of the dry quenching furnace is always a concern, the use environment of the dry quenching furnace is the most severe, and the damage of brickwork in a chute area of the dry quenching furnace is mainly concentrated on the bracket, so that the material and the structure of the bracket have great influence on the service life of the dry quenching furnace.
In the prior art, 13 layers of refractory bricks are used for bricking, as shown in fig. 1, the refractory bricks are pressed by a machine, each layer is built by left and right 2 blocks of bricks, the corbels are positioned on a cold-heat exchange working surface and bear the whole weight of an annular flue, the corbels are fragile places in a dry quenching furnace, the corbels are always positioned under the states of coke movement and flue gas flow flushing, the temperature change of the gas in the furnace causes the corbel bricks to be suddenly changed under the conditions of cold and heat, the inside of the bricks generates temperature gradient to form thermal stress, and the inside tissues of the bricks are gradually loosened to be destroyed. In addition, the bracket bricks are subjected to long-term heat load change, so that the refractory bricks expand and contract, and the expansion or contraction causes mutual displacement or dislocation between the bricks, so that the heat load change is one of the reasons for the damage of the bracket bricks.
The bracket part at the present stage mainly uses three main classes of mullite silicon carbide, silicon nitride combined silicon carbide and andalusite bricks as refractory materials, and the circulating gas in the coke quenching furnace contains O 2 、CO、CO 2 、N 2 Etc. and the refractory brick component contains SiO 2 And Fe (Fe) 2 O 3 . Reducing gas in the coke dry quenching furnace for adding Fe in refractory bricks 2 O 3 After the reduction, the volume of the refractory brick changes, the tissue becomes loose, the strength is reduced, various performances are quickly reduced, and the masonry is easily damaged.
The high-temperature inert gas in the dry quenching furnace contains a large amount of coke powder, small-particle coke and other impurities, the bracket bricks are flushed for a long time, once micro cracks appear between refractory bricks, the coke powder and the small-particle coke in the inert gas can enter the cracks to be filled, and as the high-temperature inert gas is flushed continuously, the more the coke powder is filled, the larger the cracks between the two bricks are due to the effect of high-temperature creep, so that the cracks of the two bricks on the front face of the bracket are formed and enlarged.
Above-mentioned multiple reason makes the deformation take place between the building block of bracket, leads to dislocation between the building block, and fracture finally causes bracket to sink to warp for bracket life-span shortens.
Disclosure of Invention
The invention aims to: the invention aims to provide a dry coke quenching furnace bracket material with low energy consumption and capable of preventing bracket sinking; it is another object of the present invention to provide a method for preparing a bracket brick using the above material.
The technical scheme is as follows: the invention relates to a dry quenching furnace bracket material, which comprises the following components in percentage by weight: 39-72% of plate-shaped corundum, 8-15% of andalusite powder, 8-15% of kyanite powder, 3-8% of activated alumina micropowder, 2-7% of aluminate cement and 2-7% of silica fume.
Further, the plate-shaped corundum particle size is divided into 5-3mm plate-shaped corundum, 3-1mm plate-shaped corundum and 1-0mm plate-shaped corundum.
Further, the 5-3mm plate-shaped corundum accounts for 25-40% of the total weight, the 3-1mm plate-shaped corundum accounts for 15-30% of the total weight, and the 1-0mm plate-shaped corundum accounts for 15-30% of the total weight.
Further, the andalusite powder is 600 meshes, the kyanite powder is 200 meshes, and the activated alumina micropowder is 2 microns.
A method for preparing bracket bricks by using the materials comprises the following steps:
s1, dry-mixing the weighed bracket materials uniformly, and then adding water;
s2, placing the mixed materials into a model for vibration casting molding;
s3, demoulding after the castable is hardened, and drying to obtain the bracket brick.
Further, the water added in the step S1 is 5-5.5% of the total mass.
Further, in the step S3, the drying condition is 80-120 ℃ and the drying time is 5-10 days.
Further, in step S2, the upper end of the mold is provided with a protrusion, and the lower end of the mold is provided with a groove engaged with the protrusion, so that a groove for connection is formed above the finally formed bracket brick, and a protrusion engaged with the groove is formed below the finally formed bracket brick.
Further, the groove is shaped like a Chinese character 'jing' and the protrusion engaged with the groove is shaped like a Chinese character 'jing'.
The beneficial effects are that: compared with the prior art, the invention has the following advantages:
(1) Blue stone powder and andalusite powder are introduced into bracket materials, and are decomposed and converted into mullite at high temperature and are accompanied by certain volume expansion, the common bracket is easy to creep along with the temperature becoming higher, the decomposition of blue stone and andalusite is closely related to the temperature, moreover, the decomposition temperature of andalusite is higher than that of blue stone, namely, the low-temperature creep is only that of blue stone, the high-temperature creep is large, and meanwhile, both blue stone and andalusite are decomposed and expanded, so that the problem of sinking caused by creep is exactly solved by the sectional decomposition mode.
(2) The preparation method adopts integral casting molding, is convenient for construction and masonry, and has higher integrity. The castable is high in drying strength and low in sintering temperature, so that the bracket building block of the scheme does not need to be sintered, and after the bracket building block is directly built, the bracket building block can be sintered by using the baking and using temperatures of a dry quenching furnace in use, so that the energy consumption is greatly reduced.
(3) The bracket brick prepared by the method has larger thickness, and the brick body is more difficult to break as the shearing resistance in the vertical direction is higher; the bracket bricks have larger volume, so that one bracket needs fewer bracket bricks and has fewer bricklayed brick joints and connecting grooves, so that the integrity is higher, and the probability of relative sliding is smaller; besides fewer bricklaying seams, the large bracket brick adopts a larger groined connecting groove, and compared with the splayed or X-shaped connecting groove of the traditional bracket brick, the stability of the bracket brick in the horizontal direction is further improved, and the integrity and the stability of the bracket brick are further improved.
Drawings
FIG. 1 is a prior art corbel tile construction;
FIG. 2 is a front view (a) and a right view (b) of the bracket tile of the present invention;
fig. 3 shows the bracket brick structure of the present invention.
Detailed Description
The technical scheme of the invention is further described below by combining examples.
Example 1
S1, weighing raw materials according to the proportion of the sequence number 1 in the table 1, and putting the raw materials into a stirrer for uniform mixing; then adding water with the total mass ratio of 5%, and fully stirring until the water and the water are uniformly mixed to form a casting material;
s2, vibrating and pouring the pouring material mixed in the S1 into a bracket brick model;
s3, after the castable is hardened, demolding, and then drying in an environment of 120 ℃ for 5 days to obtain bracket bricks, wherein the final measured performance is shown in Table 2;
the bracket brick model upper end is equipped with the arch, and the lower extreme is equipped with the recess with protruding block for the last fashioned bracket brick top has the well type recess that is used for connecting, and the below has the well type arch with well type recess block, as shown in fig. 2 and fig. 3, bracket brick has well type recess and well type bellied face to be the rectangle, and takes well type recess's face area to be greater than takes well type bellied face area, and a plurality of bracket bricks pass through well type recess and well type protruding link together to form the bracket, and bracket shape is unanimous with the bracket brick.
Example 2
The process for preparing the corbel bricks was substantially identical to example 1, except that the raw materials were weighed according to the ratios of number 2 in table 1; in this example, the content of plate-shaped corundum was reduced, and 325 mesh plate-shaped corundum powder was added instead of the corundum powder without adjusting the content of other components, and the final measured properties are shown in Table 2.
Example 3
The process for preparing the corbel bricks was substantially identical to example 2, except that the raw materials were weighed according to the ratios of number 3 in table 1; in this example, the 2 μm active alumina powder content was increased and the final measured properties are shown in Table 2.
Comparative example 1
The specific preparation method is basically the same as that of example 3, except that the raw materials are weighed according to the proportion of the serial number 4 in the table 1; the amount of 2 μm active alumina powder added in this example was as high as 13% and much higher than the range, and the final properties were measured as shown in Table 2.
Comparative example 2
The specific preparation method is basically the same as that of example 3, except that the raw materials are weighed according to the proportion of the serial number 5 in the table 1; in this example 2, the blue stone powder was not added, and the 325 mesh plate-like corundum powder was added instead of the blue stone powder without adjusting the content of other components, and the final properties were measured as shown in table 2.
Comparative example 3
The specific preparation method is basically the same as that of example 3, except that the raw materials are weighed according to the proportion of the serial number 6 in the table 1; in this example 2, the red spar powder was not added, and the 325 mesh plate-like corundum powder was added instead of the red spar powder without adjusting the content of other components, and the final properties were measured as shown in table 2.
The thermal shock times experiment in table 2 adopts a water quenching method, and the specific operation method is as follows: first, the materials of examples 1 to 3 and comparative examples 1 to 3 were prepared into test pieces having dimensions of 230mm X114 mm X65 mm; the samples of each example and comparative example were then inserted into an electric oven at 1100 ℃. The heated surface of the sample is 50mm away from the inner side of the furnace door and is not less than 30mm away from the surface of the heating body. After the sample is put into the furnace, the furnace temperature is not reduced by more than 50 ℃, the temperature is restored to 1100 ℃ within 5min, and then the temperature is kept at 1100 ℃ for 15min; finally, immersing the hot end of the sample into flowing water at the temperature of 5-35 ℃ to the depth of (50+/-5) mm, water-cooling for 3min, and airing in air for 5min; if the sample does not reach the damage condition, placing the sample into a furnace for continuous test; the number of thermal shocks required for the area breakage of the hot end face of the sample to reach more than half was recorded separately, as shown in table 2.
It can be seen that in examples 1 to 3, the samples prepared from the materials added with the andalusite powder and the kyanite powder simultaneously had higher thermal shock times than those of comparative examples 2 and 3, and the combination of the andalusite powder and the kyanite powder increased the thermal shock times; in the embodiment 1, when the addition amount of the 2-micrometer activated alumina powder is increased, the strength of the whole material is improved, but the heat shock frequency is lower, and when the addition amount of the 2-micrometer activated alumina powder is between 3 and 8 percent, other raw materials are matched, so that the strength of the bracket brick is ensured, and meanwhile, the bracket brick has better heat shock performance.
TABLE 1
TABLE 2
Claims (10)
1. The coke dry quenching furnace bracket material is characterized by comprising the following components in percentage by weight: 39-72% of plate-shaped corundum, 8-15% of andalusite powder, 8-15% of kyanite powder, 3-8% of activated alumina micropowder, 2-7% of aluminate cement and 2-7% of silica fume.
2. The coke dry quenching furnace corbel material according to claim 1, wherein the plate-shaped corundum is classified into 5-3mm plate-shaped corundum, 3-1mm plate-shaped corundum and 1-0mm plate-shaped corundum by particle size.
3. The dry quenching furnace corbel material according to claim 2, wherein the 5-3mm plate-shaped corundum is 25% -40% of the total weight, the 3-1mm plate-shaped corundum is 15% -30% of the total weight, and the 1-0mm plate-shaped corundum is 15% -30% of the total weight.
4. A coke dry quenching oven corbel material according to claim 3, wherein said andalusite powder is 600 mesh, said kyanite powder is 200 mesh, and said activated alumina micropowder is 2 microns.
5. A method for preparing a bracket brick by using the bracket material as set forth in any one of claims 1-4, characterized in that,
s1, dry-mixing the weighed bracket materials uniformly, and then adding water;
s2, placing the mixed materials into a model for vibration casting molding;
s3, demoulding after the castable is hardened, and drying to obtain the bracket brick.
6. The method of producing corbel bricks according to claim 5, wherein the water added in step S1 is 5 to 5.5% of the total mass.
7. The method of producing a corbel tile according to claim 5, wherein the drying condition in step S3 is 80-120 ℃.
8. The method of producing corbel bricks according to claim 7, wherein the drying time in step S3 is 5 to 10 days.
9. The method of producing a corbel tile according to claim 5, wherein in step S2, the upper end of the mold is provided with a protrusion, and the lower end is provided with a groove engaged with the protrusion.
10. The method of making a bracket tile of claim 9, wherein the recess is cross-shaped and the protrusions engaged therewith are also cross-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310984128.5A CN116947513A (en) | 2023-08-07 | 2023-08-07 | Preparation method of corbel material and corbel brick of coke dry quenching furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310984128.5A CN116947513A (en) | 2023-08-07 | 2023-08-07 | Preparation method of corbel material and corbel brick of coke dry quenching furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116947513A true CN116947513A (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310984128.5A Pending CN116947513A (en) | 2023-08-07 | 2023-08-07 | Preparation method of corbel material and corbel brick of coke dry quenching furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116947513A (en) |
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2023
- 2023-08-07 CN CN202310984128.5A patent/CN116947513A/en active Pending
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