CN109694255A - A kind of microdilatancy silica brick and preparation method thereof - Google Patents
A kind of microdilatancy silica brick and preparation method thereof Download PDFInfo
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- CN109694255A CN109694255A CN201910025246.7A CN201910025246A CN109694255A CN 109694255 A CN109694255 A CN 109694255A CN 201910025246 A CN201910025246 A CN 201910025246A CN 109694255 A CN109694255 A CN 109694255A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 222
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 111
- 239000011449 brick Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 55
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 21
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 19
- 239000010432 diamond Substances 0.000 claims abstract description 19
- 239000004575 stone Substances 0.000 claims abstract description 19
- 239000003595 mist Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 18
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 18
- VDGJOQCBCPGFFD-UHFFFAOYSA-N oxygen(2-) silicon(4+) titanium(4+) Chemical compound [Si+4].[O-2].[O-2].[Ti+4] VDGJOQCBCPGFFD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 238000010304 firing Methods 0.000 claims description 20
- 239000011265 semifinished product Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000005121 nitriding Methods 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 5
- 239000006028 limestone Substances 0.000 claims description 5
- 210000001161 mammalian embryo Anatomy 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000003763 carbonization Methods 0.000 claims 1
- 239000007767 bonding agent Substances 0.000 description 5
- 239000000571 coke Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052681 coesite Inorganic materials 0.000 description 4
- 229910052906 cristobalite Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052682 stishovite Inorganic materials 0.000 description 4
- 229910052905 tridymite Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 101100203596 Caenorhabditis elegans sol-1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000007704 transition Effects 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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- C04B35/01—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
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Abstract
The invention discloses a kind of microdilatancy silica bricks and preparation method thereof, the microdilatancy silica brick includes the raw material of following weight percent: tekite diamond stone 65%-75%, fine silica powder 5%-12%, superfine silicon dioxide micro mist 5%-10%, nanometer titanium dioxide silicon powder 2%-5%, silicon carbide micro-powder 2%-6%, silicon nitride powder 1%-5%, binder 1%-4% and silica solution 1%-5%, purity >=99.99% of the tekite diamond stone, the partial size of the fine silica powder is 450-500 μm, the partial size of the superfine silicon dioxide micro mist is 10-20 μm, the partial size of the nanometer titanium dioxide silicon powder is 50-80nm, the partial size of the silicon carbide micro-powder is 100-300 μm, the partial size of the silicon nitride powder is 200-4 00 μm.
Description
Technical field:
The invention belongs to the present invention relates to technical field of refractory materials, in particular to a kind of microdilatancy silica brick and its preparation sides
Method.
Background technique:
Silica brick is that modern capacity coke oven builds most important refractory material, the design direction of advanced coke oven be it is efficient, long-lived,
Energy conservation and environmental protection, the properties of silica brick directly affect the advance of coke oven technology.The sintering of existing silica brick go to toward moisture,
Air vent content is higher, causes silica brick finished product porosity height, compressive resistance low, does not adapt to use under long term high temperature environment.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention:
The object of the present invention is to provide a kind of microdilatancy silica bricks and preparation method thereof, to overcome the above-mentioned prior art
The defects of.
To achieve the above object, The technical solution adopted by the invention is as follows: a kind of microdilatancy silica brick, including following weight hundred
The raw material of point ratio: tekite diamond stone 65%-75%, fine silica powder 5%-12%, superfine silicon dioxide micro mist 5%-10%,
Nanometer titanium dioxide silicon powder 2%-5%, silicon carbide micro-powder 2%-6%, silicon nitride powder 1%-5%, binder 1%-4% and silicon
Colloidal sol 1%-5%, purity >=99.99% of the tekite diamond stone, the partial size of the fine silica powder are 450-500 μm,
The partial size of the superfine silicon dioxide micro mist is 10-20 μm, and the partial size of the nanometer titanium dioxide silicon powder is 50-80nm, described
The partial size of silicon carbide micro-powder is 100-300 μm, and the partial size of the silicon nitride powder is 200-400 μm.
The binder is the mixture of carboxymethyl cellulose and lime stone.
The content of SiO2 is 25%-35% in the silica solution.
A kind of preparation method of microdilatancy silica brick, comprising the following steps:
1) by tekite diamond stone in raw material, fine silica powder, superfine silicon dioxide micro mist, nanometer titanium dioxide silicon powder,
Silicon carbide micro-powder and silicon nitride powder are respectively put into grinder and grind uniformly, then ground raw material is put into machine,massing
In stir evenly；
2) binder is added in blender and continues to stir evenly, and by the embryo material being stirred be poured into mold at
Type；
3) molding adobe is placed into the environment for being transferred to constant temperature and humidity after impregnating 5-10 hours in silica solution and is placed
12-24 hours, the environment temperature was 20-25 DEG C, and the ambient humidity is 15%~20%, and keeps the environment of constant temperature and humidity
Pressure is 0.5 atmospheric pressure, removes moisture and bubble extra in adobe；
4) adobe is transferred to progress segmented firing in continuous tunnel furnace, furnace temperature is risen to 500-600 DEG C first and fires 3-5
Hour, then by furnace temperature be slowly increased to 800-1000 DEG C continue fire 10-15 hours, finally by furnace temperature rise to 1390-1480 DEG C after
Continuous firing is slowly cooled to room temperature after 35-40 hours, obtains silica brick semi-finished product；
5) silica brick semi-finished product are placed into nitriding furnace, by nitriding furnace be warming up to 1350-1450 DEG C continue fire 15-20 it is small
When after be slowly cooled to room temperature, obtain microdilatancy silica brick finished product.
It is using the beneficial effect of technical solution of the present invention:
Microdilatancy silica brick of the invention wants raw material based on tekite diamond stone, and the silica that different size is added is micro-
Powder enables to the structure of silica brick finer and close, while silicon carbide micro-powder and silicon nitride powder being added in the feed, can be improved silicon
The intensity of brick；Microdilatancy silica brick of the invention passes through constant-temperature constant-humidity environment processing before the firing, and the moisture sloughed in adobe is gentle
Bubble, it is ensured that the compactness of silica brick structure uses stage firing mode when firing, can make silica brick crystal structure transition
More evenly, further make silica brick finished product structure finer and close；The intensity and enhancing silicon of silica brick can be improved in silicon nitride process
The compactness extent of brick structure, silica brick prepared by the present invention can be widely applied to build coke oven, glass-melting furnace, acid converter with
And other heat-processing equipments.
Specific embodiment:
The present invention will be further described combined with specific embodiments below.
Embodiment 1
A kind of microdilatancy silica brick, the raw material including following weight percent: tekite diamond stone 65%, fine silica powder
5%, superfine silicon dioxide micro mist 5%, nanometer titanium dioxide silicon powder 5%, silicon carbide micro-powder 6%, silicon nitride powder 5%, bonding
Agent 4% and silica solution 5%, purity >=99.99% of the tekite diamond stone, the partial size of the fine silica powder are 450-
500 μm, the partial size of the superfine silicon dioxide micro mist is 10-20 μm, and the partial size of the nanometer titanium dioxide silicon powder is 50-
80nm, the partial size of the silicon carbide micro-powder are 100-300 μm, and the partial size of the silicon nitride powder is 200-400 μm；The bonding
Agent is the mixture of carboxymethyl cellulose and lime stone；The content of SiO2 is 25%-35% in the silica solution.
A kind of preparation method of microdilatancy silica brick, comprising the following steps:
1) by tekite diamond stone in raw material, fine silica powder, superfine silicon dioxide micro mist, nanometer titanium dioxide silicon powder,
Silicon carbide micro-powder and silicon nitride powder are respectively put into grinder and grind uniformly, then ground raw material is put into machine,massing
In stir evenly；2) binder is added in blender and continues to stir evenly, and the embryo material being stirred is poured into mold
Molding；3) molding adobe is placed into the environment for being transferred to constant temperature and humidity after impregnating 5 hours in silica solution and is placed 12 hours,
The environment temperature is 20 DEG C, and the ambient humidity is 15%, and keeping the environmental pressure of constant temperature and humidity is 0.5 atmospheric pressure,
Remove moisture and bubble extra in adobe；4) adobe is transferred to progress segmented firing in continuous tunnel furnace, first by furnace temperature liter
To 500 DEG C and fire 5 hours, then by furnace temperature be slowly increased to 800 DEG C continue fire 10 hours, finally by furnace temperature rise to 1400 DEG C after
Continuous firing is slowly cooled to room temperature after 40 hours, obtains silica brick semi-finished product；5) silica brick semi-finished product are placed into nitriding furnace, by nitrogen
Change furnace, which is warming up to 1350 DEG C, to be continued to be slowly cooled to room temperature after firing 20 hours, obtains microdilatancy silica brick finished product.
Embodiment 2
A kind of microdilatancy silica brick, the raw material including following weight percent: tekite diamond stone 70%, fine silica powder
10%, superfine silicon dioxide micro mist 10%, nanometer titanium dioxide silicon powder 2%, silicon carbide micro-powder 2%, silicon nitride powder 1%, viscous
Agent 2% and silica solution 3%, purity >=99.99% of the tekite diamond stone are tied, the partial size of the fine silica powder is 450-
500 μm, the partial size of the superfine silicon dioxide micro mist is 10-20 μm, and the partial size of the nanometer titanium dioxide silicon powder is 50-
80nm, the partial size of the silicon carbide micro-powder are 100-300 μm, and the partial size of the silicon nitride powder is 200-400 μm；The bonding
Agent is the mixture of carboxymethyl cellulose and lime stone；The content of SiO2 is 25%-35% in the silica solution.
A kind of preparation method of microdilatancy silica brick, comprising the following steps:
1) by tekite diamond stone in raw material, fine silica powder, superfine silicon dioxide micro mist, nanometer titanium dioxide silicon powder,
Silicon carbide micro-powder and silicon nitride powder are respectively put into grinder and grind uniformly, then ground raw material is put into machine,massing
In stir evenly；2) binder is added in blender and continues to stir evenly, and the embryo material being stirred is poured into mold
Molding；3) it is small that molding adobe is placed into placement 24 in the environment for being transferred to constant temperature and humidity after impregnating 10 hours in silica solution
When, the environment temperature is 25 DEG C, and the ambient humidity is 20%, and keeping the environmental pressure of constant temperature and humidity is 0.5 atmosphere
Pressure removes moisture and bubble extra in adobe；4) adobe is transferred to progress segmented firing in continuous tunnel furnace, first by furnace temperature
It rises to 600 DEG C and fires 3 hours, then furnace temperature is slowly increased to 1000 DEG C and continues to fire 10 hours, furnace temperature is finally risen to 1390
DEG C continue to be slowly cooled to room temperature after firing 35 hours, obtains silica brick semi-finished product；5) silica brick semi-finished product are placed into nitriding furnace,
Nitriding furnace is warming up to 1450 DEG C to continue to be slowly cooled to room temperature after firing 20 hours, obtains microdilatancy silica brick finished product.
Embodiment 3
A kind of microdilatancy silica brick, the raw material including following weight percent: tekite diamond stone 70%, fine silica powder
8%, superfine silicon dioxide micro mist 7%, nanometer titanium dioxide silicon powder 3%, silicon carbide micro-powder 2%, silicon nitride powder 3%, bonding
Agent 2% and silica solution 5%, purity >=99.99% of the tekite diamond stone, the partial size of the fine silica powder are 450-
500 μm, the partial size of the superfine silicon dioxide micro mist is 10-20 μm, and the partial size of the nanometer titanium dioxide silicon powder is 50-
80nm, the partial size of the silicon carbide micro-powder are 100-300 μm, and the partial size of the silicon nitride powder is 200-400 μm；The bonding
Agent is the mixture of carboxymethyl cellulose and lime stone；The content of SiO2 is 25%-35% in the silica solution.
A kind of preparation method of microdilatancy silica brick, comprising the following steps:
1) by tekite diamond stone in raw material, fine silica powder, superfine silicon dioxide micro mist, nanometer titanium dioxide silicon powder,
Silicon carbide micro-powder and silicon nitride powder are respectively put into grinder and grind uniformly, then ground raw material is put into machine,massing
In stir evenly；2) binder is added in blender and continues to stir evenly, and the embryo material being stirred is poured into mold
Molding；3) molding adobe is placed into the environment for being transferred to constant temperature and humidity after impregnating 8 hours in silica solution and is placed 18 hours,
The environment temperature is 23 DEG C, and the ambient humidity is 18%, and keeping the environmental pressure of constant temperature and humidity is 0.5 atmospheric pressure,
Remove moisture and bubble extra in adobe；4) adobe is transferred to progress segmented firing in continuous tunnel furnace, first by furnace temperature liter
To 600 DEG C and fire 4 hours, then by furnace temperature be slowly increased to 900 DEG C continue fire 12 hours, finally by furnace temperature rise to 1450 DEG C after
Continuous firing is slowly cooled to room temperature after 38 hours, obtains silica brick semi-finished product；5) silica brick semi-finished product are placed into nitriding furnace, by nitrogen
Change furnace, which is warming up to 1400 DEG C, to be continued to be slowly cooled to room temperature after firing 18 hours, obtains microdilatancy silica brick finished product.
The microdilatancy silica brick of embodiment 1, embodiment 2 and embodiment 3 is tested for the property, test result is as follows table:
The experimental results showed that microdilatancy silica brick of the invention wants raw material based on tekite diamond stone, and different size is added
Fine silica powder enables to the structure of silica brick finer and close, while silicon carbide micro-powder and silicon nitride powder being added in the feed,
It can be improved the intensity of silica brick；Microdilatancy silica brick of the invention passes through constant-temperature constant-humidity environment processing before the firing, sloughs in adobe
Moisture and bubble, it is ensured that the compactness of silica brick structure uses stage firing mode when firing, and silica brick can be made brilliant
Body structure changes more evenly, further makes silica brick finished product structure finer and close；The intensity of silica brick can be improved in silicon nitride process
And the compactness extent of enhancing silica brick structure, silica brick prepared by the present invention can be widely applied to build coke oven, glass-melting furnace, acid
Property converter and other heat-processing equipments.
Although above-described embodiment is described in detail technical solution of the present invention, technical side of the invention
Case is not limited to above embodiments, in the case where not departing from thought and objective of the invention, to technical solution of the present invention institute
Any change done will fall into claims of the present invention limited range.
Claims (4)
1. a kind of microdilatancy silica brick, it is characterised in that: the raw material including following weight percent: tekite diamond stone 65%-75%,
Fine silica powder 5%-12%, superfine silicon dioxide micro mist 5%-10%, nanometer titanium dioxide silicon powder 2%-5%, silicon carbide
Micro mist 2%-6%, silicon nitride powder 1%-5%, binder 1%-4% and silica solution 1%-5%, the tekite diamond stone it is pure
Degree >=99.99%, the partial size of the fine silica powder are 450-500 μm, and the partial size of the superfine silicon dioxide micro mist is 10-
20 μm, the partial size of the nanometer titanium dioxide silicon powder is 50-80nm, and the partial size of the silicon carbide micro-powder is 100-300 μm, described
The partial size of silicon nitride powder is 200-400 μm.
2. a kind of microdilatancy silica brick according to claim 1, it is characterised in that: the binder be carboxymethyl cellulose and
The mixture of lime stone.
3. a kind of microdilatancy silica brick according to claim 1, it is characterised in that: SiO in the silica solution2Content be
25%-35%.
4. a kind of preparation method of microdilatancy silica brick, it is characterised in that: the following steps are included:
1) by tekite diamond stone, fine silica powder, superfine silicon dioxide micro mist, nanometer titanium dioxide silicon powder, carbonization in raw material
Silicon powder and silicon nitride powder are respectively put into grinder and grind uniformly, then ground raw material is put into machine,massing and is stirred
It mixes uniformly；
2) binder is added in blender and continues to stir evenly, and the embryo material being stirred is poured into die for molding；
3) molding adobe is placed into the environment for being transferred to constant temperature and humidity after impregnating 5-10 hours in silica solution and places 12-24
Hour, the environment temperature is 20-25 DEG C, and the ambient humidity is 15%~20%, and keeps the environmental pressure of constant temperature and humidity
For 0.5 atmospheric pressure, moisture and bubble extra in adobe are removed；
4) adobe is transferred in continuous tunnel furnace progress segmented firing, furnace temperature is risen to 500-600 DEG C first and to fire 3-5 small
When, then furnace temperature is slowly increased to 800-1000 DEG C and continues to fire 10-15 hours, furnace temperature is finally risen into 1390-1480 DEG C of continuation
It is slowly cooled to room temperature after firing 35-40 hours, obtains silica brick semi-finished product；
5) silica brick semi-finished product are placed into nitriding furnace, nitriding furnace is warming up to 1350-1450 DEG C and is continued after firing 15-20 hours
It is slowly cooled to room temperature, obtains microdilatancy silica brick finished product.
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| US11554988B2 (en) * | 2020-05-22 | 2023-01-17 | Magneco/Metrel, Inc. | Method of making chemical-resistant quartz-based concrete |
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