CN103058637B - 800 degree of forsterite refractory fibres - Google Patents
800 degree of forsterite refractory fibres Download PDFInfo
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- CN103058637B CN103058637B CN201210568334.XA CN201210568334A CN103058637B CN 103058637 B CN103058637 B CN 103058637B CN 201210568334 A CN201210568334 A CN 201210568334A CN 103058637 B CN103058637 B CN 103058637B
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- 229910052839 forsterite Inorganic materials 0.000 title claims abstract description 14
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 74
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000006004 Quartz sand Substances 0.000 claims abstract description 11
- 230000007613 environmental effect Effects 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 8
- 238000004090 dissolution Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000007669 thermal treatment Methods 0.000 claims description 8
- 238000001467 acupuncture Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 7
- 210000001124 body fluid Anatomy 0.000 abstract description 6
- 239000010839 body fluid Substances 0.000 abstract description 6
- 239000005995 Aluminium silicate Substances 0.000 abstract description 3
- 235000012211 aluminium silicate Nutrition 0.000 abstract description 3
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 abstract 1
- 229910000323 aluminium silicate Inorganic materials 0.000 abstract 1
- 210000004072 lung Anatomy 0.000 description 16
- 239000000919 ceramic Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 13
- 208000020816 lung neoplasm Diseases 0.000 description 11
- 238000002425 crystallisation Methods 0.000 description 10
- 230000008025 crystallization Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 208000037841 lung tumor Diseases 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000004031 devitrification Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- 229910052681 coesite Inorganic materials 0.000 description 4
- 229910052906 cristobalite Inorganic materials 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 229910052682 stishovite Inorganic materials 0.000 description 4
- 229910052905 tridymite Inorganic materials 0.000 description 4
- 241000699800 Cricetinae Species 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 201000010001 Silicosis Diseases 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 206010016654 Fibrosis Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010061924 Pulmonary toxicity Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 210000001130 astrocyte Anatomy 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 231100000374 pneumotoxicity Toxicity 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000007047 pulmonary toxicity Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
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- Inorganic Fibers (AREA)
Abstract
The invention discloses a kind of 800 degree of forsterite refractory fibres, wherein, mass percent is as follows: SiO
240-60%, MgO? 30-50%, other foreign matter contents are not higher than 10%.The present invention using forsterite and quartz sand as raw material, obtained refractory fibre alternative pure aluminium silicate system refractory fibre, and, both can be dissolved in human body fluid, and can also decompose, discharge, reduce the harm to human body, improve the security of producing and using; There is again sufficiently high resistance to elevated temperatures and structural strength, and refractory temperature reaches 800 degree.
Description
Technical field
The present invention relates to technical field of refractory materials, particularly relate to a kind of 800 degree of forsterite refractory fibres.
Background technology
The central institute of nineteen forty-one Babcock & Wilcox Co. (B&W) of the U.S. (Babcock & WilcoxCo.), finds, with the stream stock of compressed air spraying kaolin melt, to obtain the fiber that a kind of shape is similar with asbestos.China manufactures experimently pottery refractory fibre from early 1970s, the starting material such as general employing flint clay, kaolin, quartz sand, aluminum oxide are by electric arc or resistance furnace melt production fiber, main component is Al2O3 and SiO2, and be successfully used to industrial furnace, and be widely used in the various industrial circles such as metallurgy, machinery, oil, chemical industry, electronics and light industry.In addition, in the top science such as aerospace and nuclear power technology, have also been obtained application.World's Main Developed Countries all competitively develops ceramic fiber industry, and current World Ceramic fiber gross annual output amount is own breaks through 300,000 tons.
The advantage of ceramic fiber is that use temperature is high, applied at elevated temperature performance is good, but its maximum defect is non-degradable, harmful, this type of refractory fibre diameter is mostly below 6 μm, and self property is crisp in addition, easy fracture produces fibre dust, very easily be inhaled in human body, thus affect HUMAN HEALTH, bring out inflammation in respiratory system even canceration.And certain harm is caused to environment.
Since 20th century the nineties, along with people are to health, the pay attention to day by day of environmental protection, particularly developed country in line with the product design concept that people-oriented, and by the guide effect of some high-level policies.Therefore, international cancer research association, according to the hazard rating of ceramic fiber to HUMAN HEALTH, is divided into possibility carcinogen classfication, has been subject to increasing use restriction in some developed countries.
European and American developed countries achieved significant achievement in the substitute-biodegradable refractory fibre exploitation of ceramic fiber in recent years, increasing biodegradable refractory fibre is made to start to come into the market, with the sizable impact to traditional ceramics processbearing astrocyte of its noticeable environmental protection concept.
Along with the reinforcement of Environmental Protection in China law enforcement dynamics and the needs of accession to WTO, within 1998, be organized in Beijing by unit consolidations such as the hi tech and new material domain expert council of the Ministry of Science and Technology 863, National Natural Science Foundation of China and held the symposial of Eco-environmental Issues in China investigation of materials strategy.Result is thought, in order to make China's economy realize Sustainable development, taking into account again and adhering to development research type material to the Harmony aspect of ecotope while being required to meet the use properties of material.Exploitation and popularization have the bio-soluble refractory fibre of independent intellectual property right for this reason, have important practical significance to realizing China's refractory ceramic fibre material industry Sustainable development.
Soluble ceramic fiber in the market has a variety of, as the CMS system refractory fibre of the JM909 glass fibre of the Manville company of the U.S., the FIBROX300 of the Fibrox technology company in Taiwan, the ThemralRefractorys company of Britain.Wherein more typical solubility refractory fibre composition is Isofrax and Insulfrax of UnitfraxCorpNiagraFallsN.Y development.These two kinds of fiber applications are heat insulation at 980 DEG C-1260 DEG C.Isofrax fiber is primarily of MgO (19%-26%) and SiO2 (72%-77%).Insulfrax fiber main component CaO (32%), MgO (3%), SiO2 (65%).
In the process exploring bio-soluble ceramic fiber, a lot of national patent of all having applied for oneself in soluble ceramic fiber composition.Combine the U.S., the German various patents at soluble ceramic fiber composition, with following composition (percentage) for feature: SiO245-65%, MgO0-20%, CaO15-40%, K2O+Na2O0-6% or SiO230-40%, Al2O316-25%, MgO0-15%, K2O+Na2O0-5%, P2O50-0.8%.Combine the various patents of Britain at soluble ceramic fiber composition, all with following composition (percentage) for feature: SiO240-67%, MgO0-12%, CaO20-45%, B2O30-15%, P2O50-5%.
In view of above-mentioned technical problem and background material, the present invention aims to provide a kind of alternative ceramic series refractory material, and, both can be dissolved in human body fluid, and can also decompose, discharge, reduce harm to human body, improve the security of producing and using; There is again the ecological solubility refractory fibre of 1050 degree of Calucium Silicate powder of sufficiently high resistance to elevated temperatures and structural strength.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of alternative pottery system refractory fibre, and, both can be dissolved in human body fluid, and can also decompose, discharge, reduce the harm to human body, improve the security of producing and using; There is again 1050 degree of Calucium Silicate powder ecological solubility environmental protection refractory fibre of sufficiently high resistance to elevated temperatures and structural strength.
For solving the problems of the technologies described above, the invention provides a kind of Calucium Silicate powder ecological solubility environmental protection refractory fibre, wherein, mass percent is as follows: SiO
250-70%, CaO20-40%, ZrO
20.5-1.0%, P
2o
50.1-0.5%, other foreign matter contents are not higher than 5%.
Or mass percent is as follows: SiO
250-60%, CaO20-30%, ZrO
20.5-0.8%, P
2o
50.1-0.3%, other foreign matter contents are not higher than 5%.
Or, the following SiO of mass percent
260-70%, CaO30-40%, ZrO
20.8-1.0%, P
2o
50.3-0.5%, other foreign matter contents are not higher than 5%.
Or mass percent is as follows: SiO
255-65%, CaO25-35%, ZrO
20.6-0.9%, P
2o
50.2-0.4%, other foreign matter contents are not higher than 5%.
Or mass percent is as follows: SiO
258-62%, CaO32-36%, ZrO
20.7-0.8%, P
2o
50.3-0.4%, other foreign matter contents are not higher than 5%.
Maximum operating temperature of the present invention is 1050 degrees Celsius.
Object to better implement the present invention, the invention also discloses the manufacture method of a kind of 1050 degree of Calucium Silicate powder ecological solubility environmental protection refractory fibre, as follows:
1, raw material mixing: form by above-mentioned percent mass, by wollastonite, quartz sand, zircon sand and P
2o
5for raw material is prepared burden, stirrer is mixed;
2, melting: the raw material mixed is placed in resistance furnace, through 1500 ~ 2000 DEG C of meltings;
3, silk is got rid of cotton with collection: use tumbling machine by fused solution by getting rid of a mode, more cotton through condensers collection, obtained product of the present invention.
The present invention alternative pottery system refractory fibre, and, both can be dissolved in human body fluid, and can also decompose, discharge, reduce the harm to human body, improve the security of producing and using; Have again sufficiently high resistance to elevated temperatures and structural strength, maximum operation (service) temperature of the present invention reaches 800 degrees Celsius.
Embodiment
Quartz sand: common quartz sand, i.e. SiO
2>=90-99%Fe
2o
3≤ 0.060.02%, refractoriness 1750 DEG C.
One in olivine group, rhombic system, chemical formula Mg2SiO4, the normal hopcalite containing 2FeOSiO2 and a small amount of Na, K and Al.
Embodiment
Embodiment 1
With the forsterite of 80%, the quartz sand of 20% for raw material, mix, the raw material mixed is placed in resistance furnace, through 1500 ~ 2000 DEG C of meltings; Fused solution is by getting rid of a mode, cotton through condensers collection, and the obtained cellucotton base needing thickness, then through acupuncture, 500 ~ 650 DEG C of thermal treatments, eventually pass cutting, and clot forms ecological solubility environmental protection refractory fiber blanket.
Embodiment 2
With the forsterite of 85%, the quartz sand of 15% for raw material, mix, the raw material mixed is placed in resistance furnace, through 1500 ~ 2000 DEG C of meltings; Fused solution is by getting rid of a mode, cotton through condensers collection, and the obtained cellucotton base needing thickness, then through acupuncture, 500 ~ 650 DEG C of thermal treatments, eventually pass cutting, and clot forms ecological solubility environmental protection refractory fiber blanket.
Embodiment 3
With the forsterite of 75%, the quartz sand of 25% for raw material, mix, the raw material mixed is placed in resistance furnace, through 1500 ~ 2000 DEG C of meltings; Fused solution is by getting rid of a mode, cotton through condensers collection, and the obtained cellucotton base needing thickness, then through acupuncture, 500 ~ 650 DEG C of thermal treatments, eventually pass cutting, and clot forms ecological solubility environmental protection refractory fiber blanket.
Embodiment 4
With the forsterite of 70%, the quartz sand of 30% for raw material, mix, the raw material mixed is placed in resistance furnace, through 1500 ~ 2000 DEG C of meltings; Fused solution is by getting rid of a mode, cotton through condensers collection, and the obtained cellucotton base needing thickness, then through acupuncture, 500 ~ 650 DEG C of thermal treatments, eventually pass cutting, and clot forms ecological solubility environmental protection refractory fiber blanket.
Embodiment 5
With the forsterite of 90%, the quartz sand of 10% for raw material, mix, the raw material mixed is placed in resistance furnace, through 1500 ~ 2000 DEG C of meltings; Fused solution is by getting rid of a mode, cotton through condensers collection, and the obtained cellucotton base needing thickness, then through acupuncture, 500 ~ 650 DEG C of thermal treatments, eventually pass cutting, and clot forms ecological solubility environmental protection refractory fiber blanket.
Embodiment 1-5 solubleness test result is as follows:
| SiO 2 | CaO | Total meltage (ppm) | Resistance to temperature DEG C | |
| Ecological soluble fiber 24h solubleness | 153 | 53 | 208 | 800 |
| Ecological soluble fiber 48h solubleness | 164 | 54 | 218 | 800 |
Biology performance is tested
(1) pulmonary toxicity test is carried out to animal.Hamster is placed in high density glass wool dust and tests.Namely mouse be exposed to can suck certain fiber after through dissecting mouse, find whether mouse has fibrosis lesion with it.
Table 1-1 is different, and organism affects fibrolysis
| Different organism | Mouse | People |
| Suck the size (D μm) of fiber | 0-5 | 0-10 |
| Scavenger cell size (μm) | 12 | 17 |
| Fibrolysis rate every day (%) | 0.01 | 0.00015 |
| Half-life (my god) | 70 | 460 |
According to oberdoset, epidemic research statistical study and the biometric analysis research in lab mouse simulation Bioexperiment are carried out to direct labor, it is different for demonstrating different bionts to the suction of the fiber of different size and fiber degraded in vivo, and identical biodegradability is also different.Pottery system refractory fibre Fibre diameter is less than 6 μm, and generally speaking, this fiber is insoluble to Human Lung liquid, easily causes human body to suffer from silicosis, to human body have carcinogenic may, wherein more is cancer between lung cancer and skin.
The corrosion resistance of mineral fibre to lung liquid is different, but people are the most it is of concern that mineral fibre is once by people's inspiration deep lung, how long can it exist in lung? research according to people such as Miller [i] shows: mineral fibre depends on the chemical stability of fiber in human lung depths lifetime length, namely it is to the corrosion resistance of lung liquid, and this plays very important effect in its potential biological action.The chemical stability of fiber, namely its dissolution rate in chemical solution, depends primarily on its chemical composition, surface-area and condition of surface.And different fibers changes difference in mouse lung.
Table 1-2 fiber various dissolving and index thereof in simulation human body fluid and oxalic acid
Table1-2FibersinvitroSolutionvalues
By to oxide dissolution experimental study, the performance point of dissolution rate can be three major types: Al2O3 can reduce dissolution rate greatly.B2O3, BaO, Na2O, CaO, MgO can make dissolution rate increase, and are the most especially with B2O3.SiO2 is little on dissolution rate impact.Because glass fibre is being jetted in forming process at wire drawing shaping, glass wool, virgin fibre is due to thermal stresses effect, tiny crack can be formed at glass periphery, in addition fiberglass surfacing contains some positively charged ions and has wetting ability, so the fiber surface in lung liquid is very easily moistened by lung immersion, lung liquid pH=7.4 is in slightly alkaline, and fiberglass surfacing tiny crack can expand, deepen under lung liquid corrodes.Be the increase in fiberglass surfacing on the one hand to amass; The tiny crack of fiber expands, deepens and fibre strength decline on the other hand, accelerates it by scavenger cell " dissolving ".Make a thorough investigation of research and calculate glass fibre constant of dissolution rate and be: 50 ~ 300ng/cm2h.
Based on above-mentioned materials, by embodiment 1-5 and pottery system refractory fibre, fibrous magnesium silicate, whether be dissolved in lung liquid about fiber and test with mouse, be compared as follows:
| Group | Whether be dissolved in lung liquid |
| Embodiment 1 | Be |
| Embodiment 2 | Be |
| Embodiment 3 | Be |
| Embodiment 4 | Be |
| Embodiment 5 | Be |
| Pottery system refractory fibre | No |
| Asbestos | No |
(2) lung carcinogenicity test is carried out to animal.Being chronically exposed to rat and each 10 examples of hamster necessarily to suck in fibre content air, cuts lung, sees and whether occur lung tumor, be compared as follows
| Group | Rat | Hamster |
| Embodiment 1 | Without lung tumor | Without lung tumor |
| Embodiment 2 | Without lung tumor | 1 example |
| Embodiment 3 | Without lung tumor | Without lung tumor |
| Embodiment 4 | 1 example | Without lung tumor |
| Embodiment 5 | Without lung tumor | Without lung tumor |
| Pottery system refractory fibre | There are 7 examples in 10 examples | There are 6 examples in 10 examples |
| Asbestos | There are 6 examples in 10 examples | There are 4 examples in 10 examples |
Through above-mentioned several table, can draw, embodiment 1-5 can be dissolved in lung liquid, not easily makes human body occur silicosis, occurs that the probability of lung tumor is low.
The fiber crystallization ability of embodiment 1-5
Getting rid of in a process, soluble ceramic fiber raw material melt has tendency towards devitrification in various degree, and this tendency towards devitrification is referred to as crystallization property.
In the production of fiber, crystallization is definitely unallowed, and it will cause the fracture of fiber, and intensity reduces.Produce crystallization for avoiding getting rid of ceramic fiber in a process, mold temperature must higher than the recrystallization temperature of raw material.Measuring crystallization ceiling temperature is the key determining mold temperature.In the use procedure of soluble ceramic fiber, along with the increase of time and temperature, fiber occurs that crystallization may make filament contraction and destruction.
Glass is below its balance liquid liquidus temperature, and for crystallization phases, be in the steady state that is situated between, maximum system energy is higher, therefore the trend of oriented crystal transition.When glass generation crystallization changes, the change of system total energy is by the difference Δ G of glassy phase and crystalline phase two-phase free energy of chemistry, the interfacial energy U that the crystalline phase of precipitation and glassy phase are formed
fwith strain energy U
sthree part compositions.In the crystallization transition process of glass, U
f+ U
s=Δ G, therefore mainly considers the change of system free energy of chemistry.The nucleus formed in glass, the transition process of glassy phase and crystalline phase near interface atom is depended in its growth.The vibrational frequency of atom be v its cross interface from glassy phase and proceed to crystalline phase and need activation energy.
It is v that atom crosses from glassy phase the frequency that interface proceeds to crystalline phase
1in=vexp [-E/ (RT)] formula, R is gas law constant, and T is thermodynamic temperature, and v is atomic vibration frequency.System free energy decline Δ G is caused due to the migration of atom.For reverse procedure, namely atom proceeds to glassy phase from crystalline phase needs to cross potential barrier (E+ Δ G), and jump frequency is v
2=vexp [(E+ Δ G)/(RT)] is so the clean jump frequency of atom from glassy phase to crystalline phase is v
1-v
2.If nucleating surface grows one deck atom, phase interface migration distance be all then nucleus along one-dimensional square to growth velocity:
U＝λ(v
1-v
2)＝λvexp(-E/(RT){1-exp[-ΔG/(RT)]}(1)
Make k
0=v{1-exp [-Δ G/ (RT)] } (2)
Then formula (1) can be write as U=λ k
0[exp (-E/ (RT)], E is devitrification of glass activation energy.K
0be commonly referred to as frequency factor, and be considered to have nothing to do with temperature T, and in fact this only has and just strictly sets up under isothermal conditions.For non-isothermal process, from formula (2), k
0relevant with T, the k tried to achieve with diverse ways
0value differ an order of magnitude sometimes.Only in certain temperature range, the rising of temperature causes v to increase cancelling out each other with the reduction of the free energy difference Δ G of glassy phase and crystalline phase just can being similar to during a part regarding constant as.
The present invention, through after Overheating Treatment, no longer includes crystallization and occurs.As can be seen from above phenomenon, thermal treatment of the present invention can improve the performance of goods to a certain extent.After thermal treatment to a certain degree, the devitrification resistance of refractory fibre can be able to increase significantly.Phosphorus be added in the performance improving fiber to a certain extent, reduce the tendency towards devitrification of system.The content of phosphorus unicorn of the present invention, further can improve the flowing property after raw materials melt, improves the success ratio of blown fibre.And can be further large-scale commercial production and establish solid basis.
In sum, the present invention alternative pottery system refractory fibre, and, both can be dissolved in human body fluid, and can also decompose, discharge, reduce the harm to human body, improve the security of producing and using; Have again sufficiently high resistance to elevated temperatures and structural strength, maximum operation (service) temperature of the present invention reaches 800 degrees Celsius.
Claims (1)
1. 800 degree of forsterite refractory fibres, is characterized in that, with the forsterite of 85%, the quartz sand of 15% for raw material, mix, the raw material mixed is placed in resistance furnace, through 1500 ~ 2000 DEG C of meltings; Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 500 ~ 650 DEG C of thermal treatments, eventually pass cutting, and clot forms ecological solubility environmental protection refractory fiber blanket;
The 48h meltage of 800 degree of forsterite refractory fibres is 218ppm,
Dissolution rate is 50 ~ 300ng/cm
2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210568334.XA CN103058637B (en) | 2012-12-12 | 2012-12-12 | 800 degree of forsterite refractory fibres |
Applications Claiming Priority (1)
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| CN105198226B (en) * | 2015-09-10 | 2017-11-10 | 武汉科技大学 | A kind of forsterite fiber and preparation method thereof |
| CN106431428B (en) * | 2016-08-30 | 2019-04-16 | 长兴盟友耐火材料有限公司 | A kind of preparation method dyeing serpentine refractory fibre |
| CN106431372B (en) * | 2016-08-30 | 2019-04-16 | 长兴盟友耐火材料有限公司 | A kind of preparation method of the soluble serpentine refractory fibre of antibacterial |
Citations (4)
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|---|---|---|---|---|
| CN1226879A (en) * | 1996-08-02 | 1999-08-25 | 欧文斯科尔宁格公司 | Biosoluble, high temperature mineral wools |
| CN1124239C (en) * | 1995-10-30 | 2003-10-15 | 尤尼弗瑞克斯有限公司 | High temp resistant glass fiber |
| US6953757B2 (en) * | 2002-01-10 | 2005-10-11 | Unifrax Corporation | High temperature a resistant vitreous inorganic fiber |
| CN102491644A (en) * | 2011-11-16 | 2012-06-13 | 泰山玻璃纤维有限公司 | High magnesium content boron-free glass fiber |
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| CN102515731B (en) * | 2011-12-08 | 2013-08-14 | 武汉科技大学 | Magnesium silicate ceramic fibre and preparation method therof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124239C (en) * | 1995-10-30 | 2003-10-15 | 尤尼弗瑞克斯有限公司 | High temp resistant glass fiber |
| CN1226879A (en) * | 1996-08-02 | 1999-08-25 | 欧文斯科尔宁格公司 | Biosoluble, high temperature mineral wools |
| US6953757B2 (en) * | 2002-01-10 | 2005-10-11 | Unifrax Corporation | High temperature a resistant vitreous inorganic fiber |
| CN102491644A (en) * | 2011-11-16 | 2012-06-13 | 泰山玻璃纤维有限公司 | High magnesium content boron-free glass fiber |
Non-Patent Citations (1)
| Title |
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| "CaO-MgO-SiO2系生物可溶性陶瓷纤维的研究";王玺堂 等;《武汉科技大学学报》;20080630;第31卷(第3期);第238－241页 * |
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