WO1989004813A1 - Procede de melange de laitier de ferrochrome destine a produire une fibre ignifuge et chimiquement resistante - Google Patents
Procede de melange de laitier de ferrochrome destine a produire une fibre ignifuge et chimiquement resistante Download PDFInfo
- Publication number
- WO1989004813A1 WO1989004813A1 PCT/FI1988/000188 FI8800188W WO8904813A1 WO 1989004813 A1 WO1989004813 A1 WO 1989004813A1 FI 8800188 W FI8800188 W FI 8800188W WO 8904813 A1 WO8904813 A1 WO 8904813A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slag
- mixing
- resistant
- ferrochromium
- sio
- Prior art date
Links
- 239000002893 slag Substances 0.000 title claims abstract description 53
- 229910000604 Ferrochrome Inorganic materials 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000009970 fire resistant effect Effects 0.000 title claims description 3
- 239000000835 fiber Substances 0.000 title abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 18
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 18
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 18
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 18
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000002829 reductive effect Effects 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 239000002657 fibrous material Substances 0.000 claims 1
- 229910052593 corundum Chemical group 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910001845 yogo sapphire Chemical group 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 8
- 239000007795 chemical reaction product Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- 229910052849 andalusite Inorganic materials 0.000 description 1
- -1 anorthosite Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 239000010443 kyanite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010453 quartz Substances 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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
-
- 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 method for preparing ferrochromium slag, by adding SiO 2 and A1 2 O 3 bearing mixing agents, into a slag melt which can be defibrated into fibers resistant to high temperatures and highly alkaline conditions mainly for industrial use.
- Ferrochromium slag is chromium-bearing magnesium-aluminiumsilicate, which is a by product from the process of metallic ferrochromium. It is typical of this slag that it is created in extremely reductive conditions in electric furnace smelting. Therefore it contains hardly any metal oxides that are reduced more easily than chromium oxide, nor does it contain easily evaporable components.
- Ferrochromium slag is suited to be used as a raw material for special fibers resistant to high temperatures and alkaline conditions for the following reasons, among others:
- the slag is homogeneous, once smelted and in the s o l i d state partly glazed material
- the slag is an economically advantageous raw material.
- ferrochromium slag used in the production of fibers is known from the Finnish patent application 845115.
- the said application discloses two methods for mixing ferrochromium slag, with silicon oxide and aluminium oxide.
- the purpose of mixing the ferrochromium slag is to change the physical properties of the slag melt so that the melt can be processed into fibers by means of generally known defibration methods.
- the purpose of the mixing is to make sure that the desired properties for the end product are achieved. Therefore the defibration capacity of the slag melt cannot be improved for instance at the cost of the heat resistance of the end product fibers.
- the present invention introduces an improved method for mixing ferrochromium slag, whereby it is possible to prepare such slag melt that the fibers produced thereof are resistant to high temperatures and alkaline conditions.
- the fibers are mechanically strong and easily processible, which is of crucial importance with respect to their usability.
- the mixing method of the present invention differs essentially from the one described in the FI patent application 845115 as for the mixing ratios and amounts of the employed agents.
- the chemical composition of the slag melt to be defibrated, and naturally that of the end product fibers as well, is different and its properties better.
- ferrochromium slag there are mixed SiO 2 , and A1 2 O 3 bearing mixing agents (such as quartz, anorthosite, kyanite, andalusite, bauxite etc.) so that the total SiO 2 /A1 2 O 3 ratio of the mixing agents is 0.8-1.85, and the MgO content of the mixed slag, reduced to the system MgOA1 2 O-SiO 2 , is 10-20% by weight.
- the MgO, A1 2 O 3 and SiO 2 contents of the real multicomponent slag are accumulated up to 100% by maintaining the mutual relations of the contents.
- the reduced MgO content of the slag melt to be defibrated is limited to below 20% by weight in order to ensure the defibrating capacity of the slag melt and above 10% by weight in order to prevent excessive increases in the defibration temperature of the slag melt.
- the SiO 2 /A1 2 O 3 ratio between the mixing agents it is determined in order to secure the mechanical strength of the fiber.
- the invention is also illustrated with reference to the appended drawing, which is a phase diagram of the system MgO -A1 2 O 3 -SiO 2 .
- the drawing describes a composition of the FeCr slag, and the corresponding content range which falls within the scale of the present invention is shaded. If the composition of the FeCr slag is changed, the shaded area also changes, but the ratio between the mixing agents is maintained the same.
- the amount of mixing agents added to the ferr ochromi um slag is 33-60% of the amount of the final slag.
- the mixing takes place in a smelting furnace where the temperature and outflow of the melt are easily adjusted.
- a suitable smelting furnace is for instance an electric furnace.
- the ferrochromium slag mixed according to the method of the present invention can, by applying generally known defibration methods, be produced into special fiber with a better fire-resistance than with the known mineral or slag fibers. As for strength and processibility, this fiber is comparable to them or better. Its alkaline resistance is better as well.
- the slag melt itself has a strong inclination for glazing.
- the slag forms a completely glass like structure.
- the created glass has a deep blue colour, and the fiber made thereof is light blue.
- the chemical composition of a typical ferrochromium slag is: Fe 4.9%, Cr 9.0%, SiO 2 29.6%, CaO 3.1%, MgO 25.9% and A1 2 O 3 22.7% (percentages by weight).
- the composition is: MgO 33.1%, A1 2 O 3 29.0% and SiO 2 37.9%.
- the obtained composition range for the mixed slag is the shaded area of figure 1.
- the initial composition of the ferrochromium slag is also indicated in the drawing.
Landscapes
- Chemical & Material Sciences (AREA)
- 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)
- General Life Sciences & Earth Sciences (AREA)
- Glass Compositions (AREA)
- Inorganic Fibers (AREA)
Abstract
La présente invention se rapporte à un procédé servant à préparer un laitier de ferrochrome, en ajoutant du SiO2 et de l'Al2O3 porteurs d'agents de mélange dans du laitier en fusion, lequel peut subir un défibrage pour former des fibres résistantes à des températures et à des conditions alcalines. On obtient des fibres mécaniquement résistantes lorsque le rapport SiO2/Al2O3 des agents de mélange ajoutés et compris entre 0,8 et 1,85 et lorsque la teneur en MgO du laitier mélangé, tel qu'il est réduit au système MgO-Al2O3-SiO2, est comprise entre 10 et 20% en poids.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI875238A FI78447C (fi) | 1987-11-27 | 1987-11-27 | Tillsaettning av ferrokromslagg foer framstaellning av eldfasta och kemiskt bestaendiga fibrer. |
| FI875238 | 1987-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1989004813A1 true WO1989004813A1 (fr) | 1989-06-01 |
Family
ID=8525485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FI1988/000188 WO1989004813A1 (fr) | 1987-11-27 | 1988-11-18 | Procede de melange de laitier de ferrochrome destine a produire une fibre ignifuge et chimiquement resistante |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0346415A1 (fr) |
| JP (1) | JPH02502372A (fr) |
| FI (1) | FI78447C (fr) |
| WO (1) | WO1989004813A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991001950A1 (fr) * | 1989-07-31 | 1991-02-21 | Alcan International Limited | Procede de fabrication de fibres minerales incorporant un residu a teneur en alumine provenant d'un processus de fusion de metal, et fibres ainsi produites |
| WO1999028248A1 (fr) * | 1997-12-02 | 1999-06-10 | Rockwool International A/S | Procede de production de fibres vitreuses |
| WO1999028252A1 (fr) * | 1997-12-02 | 1999-06-10 | Rockwool International A/S | Briquettes pour la production de fibres minerales et leur utilisation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2857369A4 (fr) * | 2012-05-28 | 2016-03-23 | Nichias Corp | Fibre inorganique à base de si-mg et composition la contenant |
-
1987
- 1987-11-27 FI FI875238A patent/FI78447C/fi not_active IP Right Cessation
-
1988
- 1988-11-18 EP EP19880910414 patent/EP0346415A1/fr not_active Withdrawn
- 1988-11-18 WO PCT/FI1988/000188 patent/WO1989004813A1/fr not_active Application Discontinuation
- 1988-11-18 JP JP63509448A patent/JPH02502372A/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991001950A1 (fr) * | 1989-07-31 | 1991-02-21 | Alcan International Limited | Procede de fabrication de fibres minerales incorporant un residu a teneur en alumine provenant d'un processus de fusion de metal, et fibres ainsi produites |
| US5045506A (en) * | 1989-07-31 | 1991-09-03 | Alcan International Limited | Process for producing mineral fibers incorporating an alumina-containing residue from a metal melting operation and fibers so produced |
| WO1999028248A1 (fr) * | 1997-12-02 | 1999-06-10 | Rockwool International A/S | Procede de production de fibres vitreuses |
| WO1999028252A1 (fr) * | 1997-12-02 | 1999-06-10 | Rockwool International A/S | Briquettes pour la production de fibres minerales et leur utilisation |
| EP1911729A1 (fr) * | 1997-12-02 | 2008-04-16 | Rockwool International A/S | Briquettes pour la production de fibres minérales et leur utilisation |
Also Published As
| Publication number | Publication date |
|---|---|
| FI875238A0 (fi) | 1987-11-27 |
| EP0346415A1 (fr) | 1989-12-20 |
| FI78447B (fi) | 1989-04-28 |
| JPH02502372A (ja) | 1990-08-02 |
| FI78447C (fi) | 1989-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2073872C (fr) | Fibres minerales | |
| CA1265165A (fr) | Fibre de verre resistant aux alcalis | |
| US4363878A (en) | Alkali- and heat-resistant inorganic fiber | |
| JP5295775B2 (ja) | ガラス組成 | |
| CA2265572C (fr) | Procede de fabrication de fibres de laine minerale et fibres obtenues a l'aide dudit procede | |
| US3854986A (en) | Method of making mineral fibers of high corrosion resistance and fibers produced | |
| AU711940B2 (en) | Biosoluble, high temperature mineral wools | |
| WO2003076354A1 (fr) | Isolation haute température en fibre de verre | |
| US4102692A (en) | Reinforcing glass fibers of MgO-CaO-ZnO-Al2 O3 -SiO2 -TiO2 | |
| MXPA05013323A (es) | Fibras de vidrio para reforzar materiales organicos y/o inorganicos, compuestos que encierran dichas fibras y compuestos utilizados. | |
| EA004869B1 (ru) | Минеральная вата и способ ее получения | |
| CA2272001A1 (fr) | Fils de verre aptes a renforcer des matieres organiques et/ou inorganiques | |
| KR20110097974A (ko) | 고성능 유리 섬유용 조성물 및 이로 형성된 섬유 | |
| US3847626A (en) | Glass compositions, fibers and methods of making same | |
| CA1244485A (fr) | Utilisation du laitier derive de la metallurgie | |
| CA2375719C (fr) | Composition de fibre de verre | |
| SK282996B6 (sk) | Minerálne vlákno | |
| CA1106413A (fr) | Compose verrier pour la transformation en fibres | |
| US3600205A (en) | Boric oxide-free glass fibers and compositions for making them | |
| EP0095490A1 (fr) | Fibres de verre resistantes aux alkalis | |
| EP0074655B1 (fr) | Fibre inorganique résistant à chaud | |
| WO1989004813A1 (fr) | Procede de melange de laitier de ferrochrome destine a produire une fibre ignifuge et chimiquement resistante | |
| WO1999001393A1 (fr) | Composition de verre pour fibres | |
| EA002551B1 (ru) | Способ увеличения упругости и уменьшения ломкости минерального волокна | |
| SU1723062A1 (ru) | Стекло дл стеклокристаллического материала |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1988910414 Country of ref document: EP |
|
| WWP | Wipo information: published in national office |
Ref document number: 1988910414 Country of ref document: EP |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 1988910414 Country of ref document: EP |