CN102173836B - Method for producing thermal insulation material with high thermal shock resistance through induction of mullite crystal seeds - Google Patents
Method for producing thermal insulation material with high thermal shock resistance through induction of mullite crystal seeds Download PDFInfo
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- CN102173836B CN102173836B CN 201110029112 CN201110029112A CN102173836B CN 102173836 B CN102173836 B CN 102173836B CN 201110029112 CN201110029112 CN 201110029112 CN 201110029112 A CN201110029112 A CN 201110029112A CN 102173836 B CN102173836 B CN 102173836B
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- 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 title claims abstract description 52
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 52
- 230000035939 shock Effects 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000013078 crystal Substances 0.000 title abstract description 18
- 230000006698 induction Effects 0.000 title abstract 3
- 239000012774 insulation material Substances 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 21
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 14
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 14
- 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 14
- 238000002156 mixing Methods 0.000 claims abstract description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052851 sillimanite Inorganic materials 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 238000000498 ball milling Methods 0.000 claims description 12
- 238000010304 firing Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000005245 sintering Methods 0.000 abstract description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 229910001651 emery Inorganic materials 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 7
- 206010013786 Dry skin Diseases 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 206010011376 Crepitations Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention discloses a method for producing a thermal insulation material with high thermal shock resistance through the induction of mullite crystal seeds. The method comprises the following steps of: mixing the following materials in percentage by weight: 3%-15% of the mullite crystal seeds, 20%-35% of kaolin, 5%-15% of sillimanite, 20%-40% of calcined alpha-alumina, 20%-40% of emery and 6%-15% of pore-forming agents to prepare pug; and then sequentially pugging, forming, drying and sintering. By adopting the method for producing the thermal insulation material with the high thermal shock resistance through the induction of the mullite crystal seeds, the formation of columnar crystals inside matrix materials is promoted; and in addition, an obtained material is obviously enhanced in strength and toughness and has excellent thermal shock resistant stability.
Description
Technical field
The invention belongs to Material Field, be specifically related to a kind of mullite seed and induce the method for producing the high-heat resistance shock resistant lagging material.
Background technology
Mullite, its chemical constitution are 3Al
2O
32SiO
2It is high that mullite has refractoriness, and thermal conductivity is low, good thermal shock, and chemical resistance of concrete, creep resistance are good, the advantage such as refractoriness under load is high, and volume stability is good.When producing mullite refractory, in order to prevent excessive SiO
2Crystallization conversion cracks the performance that affects goods, therefore make Al when generally preparing burden
2O
3Composition is excessive.Usually contain 10～20% corundum (Al in the mullite product of producing like this
2O
3) phase.Although corundum is conducive to improve the hot strength of material mutually, for the environment that needs stand frequently quick-cooling, heating circulation, the thermal dilation difference (Al that corundum phase and mullite are alternate
2O
3Thermal expansivity be 7.2～8.0 * 10
-6/ ℃, the mullite thermal expansivity is about 5.1 * 10
-6/ ℃) larger, might cause very high thermal stresses, cause the fire resistive material product cracking.Therefore, reduce Al in the material
2O
3The content of crystalline phase, usual method are to improve SiO in the raw material
2Add-on, guarantee and Al
2O
3Fully reaction forms the mullite phase.But mullite refractory is by theoretical when forming batching, tended to can't with Al
2O
3The SiO that fully reacts
2Crystal remains in the material.At SiO
2During crystal generation crystalline transition, can be accompanied by volume change, the strength of materials is descended, also can cause disadvantageous effect to heat-shock resistance.
Therefore, need the technology that exploitation makes new advances badly, can eliminate Al too much in the refractory materials
2O
3Crystal improves the mullite phase content, can not produce again free SiO
2Deng to the disadvantageous component of material heat-shock resistance, namely in the physical strength that guarantees high heat-insulating efficiency and necessity, improve the thermal shock resistance of material.So, how to obtain high as far as possible mullite phase content, reduce residual Al
2O
3And SiO
2Crystalline phase, thereby the heat-shock resistance of raising material, the key issue that need at present just to have become primary study to solve.
Summary of the invention
The purpose of this invention is to provide a kind of mullite seed and induce the method for producing the high-heat resistance shock resistant lagging material.
The present invention finds in research process, and the anti-thermal shock stability of insulating refractory is closely related with its microtexture.In insulating refractory, all exist a certain size, the tiny crack of quantity, under the effect of thermal stresses, expansion can occur and spread in these crackles, also may generate new crackle simultaneously, this thermostability to material is very unfavorable.This phenomenon is more remarkable in the larger material of crystal grain.Because mostly along the crystal boundary expansion, therefore in grained material, the extensions path of crackle is longer for crackle, expansion institute energy requirement is higher, and this just is conducive to improve the toughness of material, thereby improves its heat-shock resistance.On the other hand, the crystal grain of long column shape can make crackle that bifurcated, deflection occur in expansion process, can also crack bridging, crystal grain is extracted or fracture etc., and these have all increased the ability of the required consumption of crack propagation, thereby have improved mechanical property and the heat-shock resistance of material.Therefore, obtain to have the mullite refractory of good thermal shock resistance, just need to control its crystal growth, suppress crystal grain and too grow up, promote simultaneously formation and the growth of long column shape mullite crystal, form and be similar to fiber reinforced microtexture.
For above-mentioned key issue, the present invention is by adding an amount of mullite seed in prescription, the formation that promotes mullite crystal in the sintering process with grow up to improve mullite content mutually in the material.
The objective of the invention is to realize in the following manner:
A kind of mullite seed is induced the method for producing the high-heat resistance shock resistant lagging material, it is characterized in that the method may further comprise the steps:
A) mixed mud: get mullite seed 3～15wt% (preferred 3～5wt%), kaolin 20～35wt%, sillimanite 5～15wt%, calcining Alpha-alumina 20～40wt%, emergy 20～40% and pore-forming material 6～15wt% (above-mentioned raw materials weight sum is 100%), after mixing 3～5min, the water that adds again above-mentioned materials 25～40wt% mixes and obtains pug;
B) pugging: extract the air in the pug out, extrude into the mud section, old in closed environment;
C) moulding: the pug extrusion molding after old is obtained base substrate;
D) drying: be 60～120 ℃ in temperature with base substrate, humidity is less than after under 75% the condition dry 18～24 hours, be 100～200 ℃ with base substrate in temperature again, humidity was less than under 45% condition dry 18～24 hours, and dried base substrate water ratio is below 8wt%;
E) burn till: will burn till through dried base substrate, and get final product;
Wherein, described mullite seed is prepared by following methods: be under 1200-1500 ℃ the condition after the presintering in temperature according to the weight ratio of 25-35: 75-65: 3-5 with kaolin, aluminum oxide and pore-forming material, broken, ball milling, use the NaOH solution washing, remove remaining glassy phase and other dephasigns, filter again drying with clear water, ball milling sieves.
Add the water churning time in described " a) " step and can be 20～30min.
Old condition is to place under the closed environment 6～12 hours in described " b) " step.
Firing temperature is 1570-1650 ℃ in described " e) " step, and the high temperature section constant temperature time is 6-12 hour.The mass percent concentration of NaOH solution is preferably 5-15%.Preferred to adopt the number of times of NaOH solution washing be 2～4 times, uses clear water filter 23～5 time again.
The time of presintering is 3～6 hours in the mullite seed preparation process, and the order number that sieves at last is the 60-100 order.The used pore-forming material of the present invention is dried sawdust, and water ratio is less than 10%.Milling material in the production process is until can be by sieve." % " of the present invention is the quality percentage composition, raw materials used all commercially available getting.
Beneficial effect of the present invention compared with the prior art: the present invention has added the mullite seed of 3-15wt% in raw material on the one hand, by dispersed control techniques, it is uniformly distributed in the raw material, after carrying out moulding, drying under the suitable processing parameter and burning till, particularly by control drying mode and rate of drying, prepare the mullite refractory (the microtexture photo as shown in Figure 1) with rod-like mullite crystal microscopic structure, and had the micropore of receiving about a large amount of 0.5 micron in the material.Therefore, mullite seed of the present invention is induced and is produced the formation that high-heat resistance shock resistant lagging material method has promoted body material cylindrical crystalline substance, so that pore dimension and distribution are more reasonable, have obviously improved intensity and the toughness of material and can obtain excellent anti-thermal shock stability.
By the material that the inventive method obtains, the cold cycling that can stand is repeatedly impacted, and is specially adapted to the various industrial furnaces that have again certain insulation to require when having the rapid heat cycle operating mode.
Description of drawings
Fig. 1 is the microtexture photo of the prepared material with rod-like mullite crystal microscopic structure of the present invention.
Fig. 2 is the X-ray diffractogram of the prepared material of the present invention.
Embodiment
Embodiment 1
A) mixed mud: get mullite seed 5wt%, kaolin 25wt%, sillimanite 8wt%, calcining Alpha-alumina 20wt%, emergy 30wt% (above raw material is all by 100 mesh sieves), (dried sawdust water ratio is lower than 10% to dried sawdust 12wt%, by 6 mesh sieves), carry out first in proportion mixing of 4min, the water that adds again above-mentioned materials weight 35wt% stirs the pug that 25min obtains mixing; Described mullite seed is prepared by following methods: be presintering after 5 hours under 1300 ℃ the condition in temperature according to 30: 70: 5 weight ratio with the dried sawdust of kaolin, aluminum oxide and pore-forming material (water ratio is lower than 10%), broken, ball milling passes through 100 mesh sieves, be 10% NaOH solution washing 2～4 times with mass percent concentration, use again clear water filter 23～5 time, dry, ball milling is crossed 100 mesh sieves.
B) pugging: according to ordinary method, extract the air in the pug out, extrude into the mud section, in the normal temperature closed environment old 10 hours.
C) moulding: according to ordinary method, at normal temperatures extrusion molding in the input of the pug after the old automatic molder is obtained base substrate; Extruded velocity is 3.5-4 ton per hour.
D) drying: in dry kiln, be 100 ℃ with base substrate in temperature, humidity is 150 ℃ with base substrate in temperature for less than carrying out preliminarily dried under 75% the condition after 20 hours again, humidity is that dried base substrate water ratio is below 8wt% less than carrying out 20 hours depth dryings under 45% condition.
E) burn till: dried base substrate is burnt till in tunnel furnace, and firing atmosphere is air, and firing temperature is 1620 ℃, and the high temperature section constant temperature time is 8 hours, obtains product after burning till.
Embodiment 2
A) mixed mud: get mullite seed 3wt%, kaolin 20wt%, sillimanite 12wt%, calcining Alpha-alumina 33wt%, emergy 20wt% (above raw material is all by 100 mesh sieves), (water ratio is lower than 10% to dried sawdust 12wt%, by 6 mesh sieves), carry out first in proportion mixing of 5min, the water that adds again the heavy 40wt% of above-mentioned materials stirs the pug that 20min obtains mixing; Described mullite seed is prepared by following methods: be presintering after 3 hours under 1500 ℃ the condition in temperature according to 25: 75: 3 weight ratio with the dried sawdust of kaolin, aluminum oxide and pore-forming material (water ratio is lower than 10%), broken, ball milling passes through 100 mesh sieves, be 15% NaOH solution washing 2～4 times with mass percent concentration, use again clear water filter 23～5 time, dry, ball milling is crossed 60 mesh sieves.
B) pugging: according to ordinary method, extract the air in the pug out, extrude into the mud section, in the normal temperature closed environment old 12 hours.
C) moulding: according to ordinary method, at normal temperatures extrusion molding in the input of the pug after the old automatic molder is obtained base substrate; Extruded velocity is 3.5-4.5 ton per hour.
D) drying: in dry kiln, be 120 ℃ with base substrate in temperature, humidity is 200 ℃ with base substrate in temperature for less than carrying out preliminarily dried under 75% the condition after 18 hours again, humidity is that dried base substrate water ratio is below 8wt% less than carrying out 24 hours depth dryings under 45% condition.
E) burn till: with dried base substrate in tunnel furnace routinely step burn till; Firing atmosphere is air, and firing temperature is 1650 ℃, and the high temperature section constant temperature time is 6 hours, obtains product after burning till.
Embodiment 3
A) mixed mud: get mullite seed 15wt%, kaolin 34wt%, sillimanite 5wt%, calcining Alpha-alumina 20wt%, emergy 20wt% (above raw material is all by 100 mesh sieves), (dried sawdust water ratio is lower than 10% to dried sawdust 6wt%, by 6 mesh sieves), carry out first in proportion mixing of 3min, the water that adds again above-mentioned materials weight 25wt% stirs the pug that 30min obtains mixing; Described mullite seed is prepared by following methods: be presintering after 6 hours under 1200 ℃ the condition in temperature according to 35: 65: 4 weight ratio with the dried sawdust of kaolin, aluminum oxide and pore-forming material (water ratio is lower than 10%), broken, ball milling passes through 100 mesh sieves, be 5% NaOH solution washing 2～4 times with mass percent concentration, use again clear water filter 23～5 time, dry, ball milling is crossed 60 mesh sieves.
B) pugging: according to ordinary method, extract the air in the pug out, extrude into the mud section, in closed environment old 6 hours.
C) moulding: according to ordinary method, at normal temperatures extrusion molding in the input of the pug after the old automatic molder is obtained base substrate; Extruded velocity is 3.5-4.5 ton per hour.
D) drying: in dry kiln, be 60 ℃ with base substrate in temperature, humidity is 100 ℃ with base substrate in temperature for less than carrying out preliminarily dried under 75% the condition after 24 hours again, humidity is that dried base substrate water ratio is below 8wt% less than carrying out 18 hours dryings of the degree of depth under 45% condition.
E) burn till: dried base substrate is burnt till in tunnel furnace.Firing atmosphere is air, and firing temperature is 1570 ℃, and the high temperature section constant temperature time is 12 hours, obtains product after burning till.
Embodiment 4
A) mixed mud: get mullite seed 15wt%, kaolin 20wt%, sillimanite 15wt%, calcining Alpha-alumina 20wt%, emergy 20wt% (above raw material is all by 100 mesh sieves), (water ratio is lower than 10% to dried sawdust 10wt%, by 6 mesh sieves), carry out first in proportion mixing of 4min, the water that adds again above-mentioned materials weight 30wt% stirs the pug that 25min obtains mixing; Described mullite seed is prepared by following methods: be presintering after 5 hours under 1300 ℃ the condition in temperature according to 30: 70: 4 weight ratio with the dried sawdust of kaolin, aluminum oxide and pore-forming material (water ratio is lower than 10%), broken, ball milling passes through 100 mesh sieves, be 10% NaOH solution washing 2～4 times with mass percent concentration, use again clear water filter 23～5 time, dry, ball milling is crossed 100 mesh sieves.
B) pugging: according to ordinary method, extract the air in the pug out, extrude into the mud section, in closed environment old 10 hours.
C) moulding: according to ordinary method, at normal temperatures extrusion molding in the input of the pug after the old automatic molder is obtained base substrate; Extruded velocity is 3.5-4.5 ton per hour;
D) drying: in dry kiln, be 80 ℃ with base substrate in temperature, humidity is 160 ℃ with base substrate in temperature for less than carrying out preliminarily dried under 75% the condition after 22 hours again, humidity is that dried base substrate water ratio is below 8wt% less than carrying out 22 hours dryings of the degree of depth under 45% condition.Dry kiln utilizes the tunnel furnace exhaust heat to carry out drying.By regulating air intake valve, control dry kiln temperature, base substrate is carried out drying.
E) burn till: dried base substrate is burnt till in tunnel furnace.Firing atmosphere is air, and firing temperature is 1600 ℃, and the high temperature section constant temperature time is 10 hours, obtains product after burning till.
Comparative Examples
A) mixed mud: get kaolin 30wt%, sillimanite 8wt%, calcining Alpha-alumina 30wt%, emergy 20wt% (above raw material is all by 100 mesh sieves), (water ratio is lower than 10% to dried sawdust 12wt%, by 6 mesh sieves), carry out first in proportion being dry mixed of 4min, the water that adds again above-mentioned materials weight 35wt% stirs the pug that 25min obtains mixing;
B) pugging: according to ordinary method, extract the air in the pug out, extrude into the mud section, in closed environment old 10 hours;
C) moulding: according to ordinary method, at normal temperatures extrusion molding in the input of the pug after the old automatic molder is obtained base substrate; Extruded velocity is 3.5-4.5 ton per hour;
D) drying: it is about 60 ℃ that base substrate is placed in the drying room in temperature, humidity is less than carrying out preliminarily dried under 75% the condition after 2～3 days, be 150 ℃ with base substrate in temperature again, humidity is that dried base substrate water ratio is below 10wt% less than carrying out 30 hours depth dryings under 45% condition.
E) burn till: dried base substrate is burnt till in tunnel furnace; Firing atmosphere is air, and firing temperature is 1570 ℃, and the high temperature section constant temperature time is 8 hours, obtains product after burning till.
Following table is the key technical indexes contrast table of high-heat resistance shock resistant lagging material of the present invention and existing insulating refractory:
Claims (9)
1. a mullite seed is induced the method for producing the high-heat resistance shock resistant lagging material, it is characterized in that the method may further comprise the steps:
A) mixed mud: get mullite seed 3 ~ 15wt%, kaolin 20 ~ 35wt%, sillimanite 5 ~ 15wt%, calcining Alpha-alumina 20 ~ 40wt%, emergy 20 ~ 40wt% and pore-forming material 6 ~ 15wt%, after mixing 3 ~ 5min, the water that adds again above-mentioned materials 25 ~ 40wt% mixes and obtains pug;
B) pugging: extract the air in the pug out, extrude into the mud section, old in closed environment;
C) moulding: the pug extrusion molding after old is obtained base substrate;
D) drying: be 60 ~ 120 ℃ with base substrate in temperature, humidity is 100 ~ 200 ℃ with base substrate in temperature less than after under 75% the condition dry 18 ~ 24 hours again, and humidity was less than under 45% condition dry 18 ~ 24 hours, and dried base substrate water ratio is below 8wt%;
E) burn till: will burn till through dried base substrate, and get final product;
Wherein, described mullite seed is prepared by following methods: be under 1200 ~ 1500 ℃ the condition after the presintering in temperature according to the weight ratio of 25 ~ 35:75 ~ 65:3 ~ 5 with kaolin, aluminum oxide and pore-forming material, broken, ball milling, use the NaOH solution washing, filter with clear water again, drying, ball milling sieves.
2. mullite seed according to claim 1 is induced the method for producing the high-heat resistance shock resistant lagging material, it is characterized in that adding the water churning time in described " a) " step is 20 ~ 30min.
3. mullite seed according to claim 1 is induced the method for producing the high-heat resistance shock resistant lagging material, it is characterized in that old condition is to place under the closed environment 6 ~ 12 hours in described " b) " step.
4. mullite seed according to claim 1 is induced the method for producing the high-heat resistance shock resistant lagging material, it is characterized in that firing temperature is 1570 ~ 1650 ℃ in described " e) " step, and the high temperature section constant temperature time is 6 ~ 12 hours.
5. mullite seed according to claim 1 is induced the method for producing the high-heat resistance shock resistant lagging material, and the time that it is characterized in that presintering in the mullite seed preparation process is 3 ~ 6 hours.
6. mullite seed according to claim 1 is induced the method for producing the high-heat resistance shock resistant lagging material, it is characterized in that described pore-forming material is dried sawdust, and water ratio is less than 10%.
7. mullite seed according to claim 1 is induced the method for producing the high-heat resistance shock resistant lagging material, it is characterized in that the order number that sieves at last in the mullite seed preparation process is 60 ~ 100 orders.
8. mullite seed according to claim 1 is induced the method for producing the high-heat resistance shock resistant lagging material, and the mass percent concentration that it is characterized in that described NaOH solution is 5 ~ 15%.
9. mullite seed according to claim 1 is induced the method for producing the high-heat resistance shock resistant lagging material, it is characterized in that adopting the number of times of NaOH solution washing is 2 ~ 4 times, uses clear water filter 23 ~ 5 time again.
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| CN104478474B (en) * | 2014-12-23 | 2017-09-22 | 山东鲁阳股份有限公司 | A kind of light fire brick and preparation method thereof |
| CN105541356B (en) * | 2015-12-25 | 2018-10-02 | 山东鲁阳节能材料股份有限公司 | A kind of high temperature resistant clay and preparation method thereof |
| CN111116172A (en) * | 2019-12-31 | 2020-05-08 | 广东金刚新材料有限公司 | Low-density mullite heat-insulating brick and preparation method thereof |
| CN113480301B (en) * | 2021-07-15 | 2022-12-27 | 山东淄博沈淄耐火材料有限公司 | Preparation method of large brick at bottom of high-temperature sillimanite pool of large float glass melting furnace |
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| CN101838149A (en) * | 2010-04-06 | 2010-09-22 | 东台市节能耐火材料厂 | Raw materials and preparation method of anti-corrosion mullite brick |
| CN101905969A (en) * | 2010-09-06 | 2010-12-08 | 山西高科耐火材料股份有限公司 | Bauxite-based low-creep mullite product |
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| JP4966596B2 (en) * | 2005-06-30 | 2012-07-04 | 靖雄 芝崎 | Ceramic substrate and ceramic fired body |
| US8044105B2 (en) * | 2008-02-04 | 2011-10-25 | Dow Global Technologies Llc | Water-based ceramic foams showing improved gel strength |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838149A (en) * | 2010-04-06 | 2010-09-22 | 东台市节能耐火材料厂 | Raw materials and preparation method of anti-corrosion mullite brick |
| CN101905969A (en) * | 2010-09-06 | 2010-12-08 | 山西高科耐火材料股份有限公司 | Bauxite-based low-creep mullite product |
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| JP特开2007-39314A 2007.02.15 |
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