EP0454674A1 - Mineral fibres - Google Patents
Mineral fibresInfo
- Publication number
- EP0454674A1 EP0454674A1 EP19890910606 EP89910606A EP0454674A1 EP 0454674 A1 EP0454674 A1 EP 0454674A1 EP 19890910606 EP19890910606 EP 19890910606 EP 89910606 A EP89910606 A EP 89910606A EP 0454674 A1 EP0454674 A1 EP 0454674A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibres
- weight
- mineral
- mineral fibres
- clay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 19
- 239000011707 mineral Substances 0.000 title claims description 19
- 239000000203 mixture Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 8
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 8
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 abstract description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- 239000011780 sodium chloride Substances 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000004927 clay Substances 0.000 description 7
- 239000010450 olivine Substances 0.000 description 7
- 229910052609 olivine Inorganic materials 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000004576 sand Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 6
- 239000011490 mineral wool Substances 0.000 description 6
- 239000012266 salt solution Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010922 glass waste Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
Definitions
- the present invention relates to a novel type of mineral fibres.
- Such known mineral fibres typically have the following composition:
- the known mineral fibres are characterized by their high temperature resistance, but they are only slightly affected by salt solutions. Therefore they degrade very slowly when deposited at a tip or in other places in nature after use.
- Mineral fibres of the above-mentioned composition can be produced from naturally occuring raw materials and other readily obtainable and inexpensive materials such as waste products from the production of mineral wool fibres and glass. Examples of such raw material compositions are listed in Table I. Tabl e I
- Clay briquettes consisting of:
- Clay briquettes consisting of:
- Clay briquettes consisting of: 6 Clay 50 %
- the solubility of the mineral fibres of the invention and known fibres has been examined by storing fibre samples weighing 830 mg in 250 ml of said Gamble's solution for 5 hours at a temperature which was increased from 37°C to 60 ⁇ C and by measuring the SiO ⁇ -concentration of the solution at the end of the test.
- the mineral fibres according to the invention have a considerably higher solubility in the salt solution than the conventional known fibres.
- a fibre sample according to NO patent application No. 874323 was subject to a similar examination.
- the fibres had the following composition:
- the tests were carried out with mineral fiber samples weighing from 0.5 to 1 g. These samples were placed on a refractory plate and then inserted into an oven which was preheated to a given temperature. After 30 minutes in the oven at this given temperature the fibre samples were removed from the oven and examined. If the dimensions, structures and elasticity of the fibres were unchanged this was taken as an indication of the fibres being resistant at the given temperature.
- tests 3-6 listed in Table II showed that they were all resistant at a temperature higher than 750 ⁇ C which corresponds to the tem- perature resistance of the mineral fibre sample according to NO patent application No. 874323.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Les fibres décrites, qui sont solubles dans des solutions salines, présentent la composition suivante: 47 à 54 % en poids de SiO2, 4 à 7,5 % en poids de Al2O3, 1 à 8,5 % en poids de Fe2O3, 10 à 24,5 % en poids de CaO, 10 à 21 % en poids de MgO, 0,1 à 10 % en poids de Na2O et 0,1 à 1,5 % en poids de K2O.The fibers described, which are soluble in saline solutions, have the following composition: 47 to 54% by weight of SiO2, 4 to 7.5% by weight of Al2O3, 1 to 8.5% by weight of Fe2O3, 10 to 24.5% by weight of CaO, 10 to 21% by weight of MgO, 0.1 to 10% by weight of Na2O and 0.1 to 1.5% by weight of K2O.
Description
Mineral fibres
The present invention relates to a novel type of mineral fibres.
Conventional mineral fibres are produced from naturally occuring materials and therefore the costs of raw materials are relatively low.
Such known mineral fibres typically have the following composition:
The known mineral fibres are characterized by their high temperature resistance, but they are only slightly affected by salt solutions. Therefore they degrade very slowly when deposited at a tip or in other places in nature after use.
The specification of NO patent application No. 874323 (Manville Corporation) describes inorganic fibres serving as a substitute for conventional mineral wool fibres and containing MgO in an amount of 0.1-30 % by weight and A O., in an amount of 0-10 % by weight in addition to Si02 and CaO. According to the above-mentioned patent application said fibres, which are mainly characterized in having a relatively low content of AKO,, are considerably more soluble in salt solutions than conventional mineral fibres, e.g. in the so- called Gamble's solution, i.e. an aqueous solution containing the following salts in a dissolved form:
Component Concentration g/1
MgCl2, 6H20 0.160
NaCl 6.171
KCl 0.311
a2HP04 0.149
Na2S04 0.079
CaCl2, 2H20 0.060
NaHC03 1.942
NaC2H302 1.066
An essential drawback of the known soluble fibres is that they are produced from relatively expensive oxides and not from naturally occur ng raw materials.
Furthermore some of the known fibres have a relatively poor heat resistance and are consequently unsuitable for use at high tempera¬ tures.
Surprisingly it has been found that mineral fibres with a consider¬ ably greater solubility in salt solutions than the above-mentioned known mineral fibres, and which at the same time exhibit an accept¬ able high temperature resistance can be produced from naturally occuring raw materials and other inexpensive raw materials.
Mineral fibres according to the invention are characterized in having the following composition:
Si02 Al203
Fe203
CaO
MgO
Na20 K20
the total content of Si02, A1203 and Fe203 not exceeding 65 % by weight.
Mineral fibres of the above-mentioned composition can be produced from naturally occuring raw materials and other readily obtainable and inexpensive materials such as waste products from the production of mineral wool fibres and glass. Examples of such raw material compositions are listed in Table I.
Tabl e I
Raw material composition
Diabase 70 %
Cement briquettes ' 30 %
Diabase 20 % Clay briquettes 2') 80 %
Cement briquettes 3)' 80 %
Olivine-containing diabase 20 %
Clay briquettes consisting of:
Clay briquettes consisting of:
5 Clay 50 %
Rock wool waste 10 % Lime 20 %
Sand 10 %
Olivine sand 10 %
Clay briquettes consisting of: 6 Clay 50 %
Lime 20 %
Sand 10 %
Olivine sand 10 %
Soda 10 %
Cement briquettes consisting of: Olivine 53 %
Glass waste from the produc¬ tion of glass bottles 35 %
Cement 12 %
1) Consisting of 12 % cement, 40 % mineral wool waste, 5 % dolomite and 43 % diabase.
2) Consisting of 50 % clay, 30 % mineral wool waste, 15 % olivine sand and 5 % iron oxide slag.
3} Consisting of 15 % cement, 23 % mineral wool waste, 22 % sand, 10 % olivine sand, 30 % olivine-containing diabase.
The solubility of the mineral fibres of the invention and known fibres has been examined by storing fibre samples weighing 830 mg in 250 ml of said Gamble's solution for 5 hours at a temperature which was increased from 37°C to 60βC and by measuring the SiO ^-concentration of the solution at the end of the test.
The results obtained will appear from Table II.
Solubi¬ lity, ppm Si02 3.74 1.84 8.22 4.79 12.88 10.80
As will appear from the above Table II the mineral fibres according to the invention have a considerably higher solubility in the salt solution than the conventional known fibres.
A fibre sample according to NO patent application No. 874323 was subject to a similar examination. The fibres had the following composition:
Si02 50.2 % by weight
A1203 10.0 -
Ti02 0.3 -
Fe203 0.7 -
CaO 27.9 - MgO 6.8 -
Na20 0.2 -
K20 0.7 -
A solubility corresponding to a Si02-concentration of 3.16 ppm was measured which is also considerably less than the solubility of the fibres of the invention.
It could be feared that mineral fibres with a relatively high solubility in salt solutions would be sensitive to heat and therefore would be unsuitable for use at high temperatures and that they lack the necessary fire resistance. However, tests have shown that this fear is groundless in respect of the fibres according to the invention.
The tests were carried out with mineral fiber samples weighing from 0.5 to 1 g. These samples were placed on a refractory plate and then inserted into an oven which was preheated to a given temperature. After 30 minutes in the oven at this given temperature the fibre samples were removed from the oven and examined. If the dimensions,
structures and elasticity of the fibres were unchanged this was taken as an indication of the fibres being resistant at the given temperature.
If it was found that the fibres were brittle (sintered), a new sample was subject to a similar treatment at a temperature which was 25°C below the one tried first.
If necessary the test was repeated with a further reduction of the temperature until the fibres remained unchanged.
The examination of the mineral fibres according to the invention (tests 3-6) listed in Table II showed that they were all resistant at a temperature higher than 750βC which corresponds to the tem- perature resistance of the mineral fibre sample according to NO patent application No. 874323.
Mineral fibres according to the invention with a composition within the following limits:
47-51 % by weight 5-7
2-4
15-21
10-15
0.5-7
0.5-1.5
exhibit a particularly high solubility in salt solutions.
Claims
1. Mineral fibres, c h a r a c t e r i z e d in having the following composition:
Si02 47-54 % by weight
A1203 4-7.5 -
Fe203 1-8.5 -
CaO 10-24.5 - MgO 10-21 -
Na20 0.1-10 -
K20 0.1-1.5 -
2. Mineral fibres according to claim 1, c h a r a c t e r i z e d in having the following composition:
Si02 47-51 % by weight
A1203 5-7
Fe203 2-4 CaO 15-21
MgO 10-15 -
Na20 0.5-7 -
K20 0.5-1.5 -
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK492388A DK159201B (en) | 1988-09-05 | 1988-09-05 | MINERAL FIBER |
| DK4923/88 | 1988-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0454674A1 true EP0454674A1 (en) | 1991-11-06 |
Family
ID=8137889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19890910606 Pending EP0454674A1 (en) | 1988-09-05 | 1989-09-04 | Mineral fibres |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0454674A1 (en) |
| DK (1) | DK159201B (en) |
| WO (1) | WO1990002713A1 (en) |
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993015028A1 (en) | 1992-01-17 | 1993-08-05 | The Morgan Crucible Company Plc | Saline soluble inorganic fibres |
| US5994247A (en) | 1992-01-17 | 1999-11-30 | The Morgan Crucible Company Plc | Saline soluble inorganic fibres |
| FR2690438A1 (en) * | 1992-04-23 | 1993-10-29 | Saint Gobain Isover | Mineral fibers capable of dissolving in a physiological medium. |
| GB2289673B (en) † | 1993-01-15 | 1997-04-09 | Morgan Crucible Co | Saline soluble inorganic fibres |
| DE4417231C3 (en) * | 1994-05-17 | 2000-06-29 | Gruenzweig & Hartmann | Use of a composition as a material for biodegradable mineral fibers |
| SE504288C2 (en) * | 1994-07-07 | 1996-12-23 | Rockwool Ab | Glass compositions for the production of mineral wool |
| DE4427368C2 (en) * | 1994-08-02 | 1997-08-28 | Gruenzweig & Hartmann | Mineral fiber composition |
| GB9508683D0 (en) * | 1994-08-02 | 1995-06-14 | Morgan Crucible Co | Inorganic fibres |
| DE4443022C2 (en) * | 1994-12-02 | 1996-12-12 | Gruenzweig & Hartmann | Mineral fiber composition |
| US6030910A (en) * | 1995-10-30 | 2000-02-29 | Unifrax Corporation | High temperature resistant glass fiber |
| EP0804391B1 (en) * | 1995-10-30 | 2004-03-03 | Unifrax Corporation | High temperature resistant glass fiber |
| DE19604238A1 (en) * | 1996-02-06 | 1997-08-07 | Gruenzweig & Hartmann | Mineral fiber composition |
| US5932347A (en) * | 1996-10-31 | 1999-08-03 | Owens Corning Fiberglas Technology, Inc. | Mineral fiber compositions |
| DE19840497C1 (en) * | 1998-09-05 | 2000-02-10 | Oesterr Heraklith Gmbh | Mineral fibers used in fleeces, mats, or plates in the building industry |
| ZA989387B (en) * | 1998-08-13 | 1999-04-15 | Unifrax Corp | High temperature resistant glass fiber |
| GB2341607B (en) | 1998-09-15 | 2000-07-19 | Morgan Crucible Co | Bonded fibrous materials |
| US6265335B1 (en) | 1999-03-22 | 2001-07-24 | Armstrong World Industries, Inc. | Mineral wool composition with enhanced biosolubility and thermostabilty |
| RU2247085C2 (en) | 1999-09-10 | 2005-02-27 | Дзе Морган Крусибл Компани П Л С | High temperature resistant fibers soluble in physiological salt solution |
| GB2383793B (en) | 2002-01-04 | 2003-11-19 | Morgan Crucible Co | Saline soluble inorganic fibres |
| KR100937621B1 (en) | 2002-01-10 | 2010-01-20 | 유니프랙스 아이 엘엘씨 | High temperature resistant vitreous inorganic fiber |
| WO2005000754A1 (en) | 2003-06-27 | 2005-01-06 | Unifrax Corporation | High temperature resistant vitreous inorganic fiber |
| RU2385846C2 (en) | 2003-06-27 | 2010-04-10 | Юнифрэкс Корпорейшн | Vitreous inorganic fibre resistant to high temperature effects |
| RU2427546C2 (en) | 2005-11-10 | 2011-08-27 | ДЗЕ МОРГАН КРАСИБЛ КОМПАНИ ПиЭлСи | Refractory fibre |
| JP4677045B2 (en) | 2006-11-28 | 2011-04-27 | ザ・モーガン・クルーシブル・カンパニー・ピーエルシー | Inorganic fiber composition |
| EP2213634A1 (en) | 2007-11-23 | 2010-08-04 | The Morgan Crucible Company Plc | Inorganic fibre compositions |
| WO2012068269A2 (en) | 2010-11-16 | 2012-05-24 | Unifrax I Llc | Inorganic fiber |
| CN105358499A (en) | 2013-03-15 | 2016-02-24 | 尤尼弗瑞克斯I有限责任公司 | Inorganic fiber |
| US10023491B2 (en) | 2014-07-16 | 2018-07-17 | Unifrax I Llc | Inorganic fiber |
| CA2955350C (en) | 2014-07-16 | 2022-10-25 | Unifrax I Llc | Inorganic fiber with improved shrinkage and strength |
| MX387962B (en) | 2014-07-17 | 2025-03-19 | Unifrax I Llc | INORGANIC FIBER WITH IMPROVED CONTRACTION AND STRENGTH. |
| US9919957B2 (en) | 2016-01-19 | 2018-03-20 | Unifrax I Llc | Inorganic fiber |
| US11203551B2 (en) | 2017-10-10 | 2021-12-21 | Unifrax I Llc | Low biopersistence inorganic fiber free of crystalline silica |
| US10882779B2 (en) | 2018-05-25 | 2021-01-05 | Unifrax I Llc | Inorganic fiber |
| JP7313763B1 (en) * | 2021-12-27 | 2023-07-25 | 日東紡績株式会社 | Method for producing long glass fiber, and long glass fiber |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2576312A (en) * | 1948-08-16 | 1951-11-27 | Baldwin Hill Company | Method of making mineral wool |
| DE3222546A1 (en) * | 1981-10-16 | 1983-05-05 | Kurt Dr. 3400 Göttingen Mengel | Process for the production of glass wool from basalt or basalt-like rock |
| DD237434A3 (en) * | 1983-12-30 | 1986-07-16 | Hans Rosenberger | METHOD FOR PRODUCING TEMPERATURE-RESISTANT ROCK FIBERS |
-
1988
- 1988-09-05 DK DK492388A patent/DK159201B/en not_active Application Discontinuation
-
1989
- 1989-09-04 WO PCT/DK1989/000205 patent/WO1990002713A1/en not_active Application Discontinuation
- 1989-09-04 EP EP19890910606 patent/EP0454674A1/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9002713A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DK492388D0 (en) | 1988-09-05 |
| WO1990002713A1 (en) | 1990-03-22 |
| DK159201B (en) | 1990-09-17 |
| DK492388A (en) | 1990-03-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 19910301 |
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| AK | Designated contracting states |
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