DE866022C - Refractory brick with high thermal conductivity - Google Patents
Refractory brick with high thermal conductivityInfo
- Publication number
- DE866022C DE866022C DES178A DES0000178A DE866022C DE 866022 C DE866022 C DE 866022C DE S178 A DES178 A DE S178A DE S0000178 A DES0000178 A DE S0000178A DE 866022 C DE866022 C DE 866022C
- Authority
- DE
- Germany
- Prior art keywords
- thermal conductivity
- high thermal
- refractory brick
- bricks
- water glass
- 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.)
- Expired
Links
- 239000011449 brick Substances 0.000 title claims description 13
- 239000000919 ceramic Substances 0.000 claims description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims 1
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 235000014380 magnesium carbonate Nutrition 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 240000004792 Corchorus capsularis Species 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
Feuerfester Ziegel mit hoher Wärmeleitfähigkeit Es ist schon vorgeschlagen worden, keramische Körper mit einem Kern aus Sitioiumkaribi@d und einem Überzug aus. feuerfestem Material herzu; stellen, wobei. der Überzug die Verbrennung des Siliciuml#:,anb@ids verhindern soll, wenn der Körper hohen Temperaturen iin einer oxydierenden Atmosphäre ausgesetzt wird. Solche Körper weisen eine gute WIrmeleitfähigkeit aujf, haben, aber den Nachteil, daß der Schutzüberzug durch Stöße oder infolge ungleichförmiger Erhitzung oder ungleichförmiger Wärmeausdehnung gegenüber dem Kern beschädigt werden kann, woraufdas Siliciumkarbid des Kernes angegriffen wird, wenn,der keramische Körper der Einwirkung 'heißer Ofengase ausgesetzt wird.Refractory brick with high thermal conductivity. It has already been proposed ceramic bodies with a core made of Sitioiumkaribi @ d and a coating the end. refractory material; put, where. the coating the burning of the Siliciuml # :, Anb @ ids is supposed to prevent when the body is exposed to high temperatures exposed to an oxidizing atmosphere. Such bodies have good thermal conductivity aujf, but have the disadvantage that the protective coating is damaged by impacts or as a result of non-uniform Heating or uneven thermal expansion with respect to the core can be damaged can, whereupon the silicon carbide of the core is attacked, if the ceramic Body is exposed to the action of hot furnace gases.
Es ist auch vorgeschlagen worden, keramische Körper herzustellen-, die Körner oder Stücke aus Siliciumkarb-id enthalten, die in einer nicht oxydierenden keramischen Masse eingebettet sind. Die Erfindung betrifft einen feuerfesten Ziegel der letztgenannten Art, der sowohl, eine hohe Wärmeleitfähigkeit wie eine hohe mechanische Festigkeit besitzt und sich daher vorzüglich für den Einbau in metallurgische Öfen statt der bisher üblicherweise benutzten feuerfesten Ziegel eignet. Gemäß der Erfindung sd:nd, die Silici,umkainbmdkörner in eine keramische Masse eingebettet, die aus Chrofinit und/oder Magnesit mit Wasserglas als Bindemittel besteht.It has also been proposed to manufacture ceramic bodies, the grains or pieces of silicon carbide contained in a non-oxidizing ceramic mass are embedded. The invention relates to a refractory brick of the latter type, which has both a high thermal conductivity and a high mechanical Has strength and is therefore ideal for installation in metallurgical furnaces instead of the refractory bricks commonly used up to now. According to the invention sd: nd, the Silici, umkainbmdkörner embedded in a ceramic mass, which consists of Chrofinite and / or magnesite with water glass as a binder.
Bei der der Silliciumkarbidziegel gemäß der Erfindung wird zunächst ein Mörtel aus feingenia-hlenem C'hromit und/oder Magnesit mit Wasserglas als Bindemittel bereitet.When the silicon carbide brick according to the invention is first a mortar made of fine-tuned chromite and / or magnesite with water glass as a binding agent prepares.
Zweckmäßig wird hieibei saures Wasserglas mit einem Gehalt von 75 % Kieselsäure benutzt, um ein möglichst dichtes Gefüge des Mörtels nach .dessen Erh'ärtung zu erreichen. Die Mischung wird gegebenenfalls mit so viel: Wasser verdünnt, daß sie eine für die Formgebung zweckmäßige Konsistenz erhält. In diesen Mörtel wird Silieiümkarbid in Form von Körnern oder Stücken in einer anteiligen Menge von beispielsweise dem Drei- bis Vierfachen des Gewi#rntes des Mörtels eingemengt, so @daß der Siliciumgehalt des fertigen Produktes etwa 75 bis Sö°lä beträgt. Aus der so bereiteten Mischung, die durch Umrühren möglichst gleichförmig .gemacht wird, werden Ziegel durch Pressung oder in anderer geeigneter Weise geformt, die dann getrocknet werden. In dem fertigen Prodlukt liegen die Slfciumkarbidkörner oder Stücke in den gehärteten, dichten Mörtel gut eingebettet und sind dadurch bei der Verwendung der Ziegel in metallurgischen Öfen gegen Oxydation geschützt.Sour water glass with a content of 75 is useful here % Silicic acid is used to ensure that the mortar is as dense as possible To achieve hardening. If necessary, the mixture is diluted with as much: water, that she is a Obtains a suitable consistency for shaping. In This mortar is silicon carbide in the form of grains or pieces in a proportion Amount of, for example, three to four times the weight of the mortar, so @ that the silicon content of the finished product is about 75 to Sö ° lä. the end the mixture prepared in this way, which is made as uniform as possible by stirring, bricks are formed by pressing or in some other suitable manner, which then to be dried. The silicon carbide grains or are in the finished product Pieces are well embedded in the hardened, dense mortar and are therefore in the Use of bricks in metallurgical furnaces protected against oxidation.
Frforderlichernfalls können die Ziegel vor der Verwendung gebrannt werden. Infolge ihres hohen Gehaltes an Siliciumkanbid besitzen ,die Ziegel eine Jute Wärmeleitfähigkeit, so daß sie Wärme ,schnell aufnehmen hzw. abgeben, was in vielen Fäli-en eine erwünschte ]Eigenschaft hei. feuerfesten Ziegeln für metallurgische Öfen ist. Auf Grund ihrer Zusammensetzung vertragen die Ziegel sehr hohe Temperaturen`, so daß sie .in- dieser Hinsicht mit den bekannten Silicaziegeln vergleichbar sind.If necessary, the bricks can be fired before use will. Due to their high silicon kanbid content, the bricks have a Jute thermal conductivity, so that they absorb heat quickly hzw. submit what is in in many cases a desirable] property. refractory bricks for metallurgical Ovens is. Due to their composition, the bricks can withstand very high temperatures, so that in this respect they are comparable to the known silica bricks.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES178A DE866022C (en) | 1949-10-21 | 1949-10-21 | Refractory brick with high thermal conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES178A DE866022C (en) | 1949-10-21 | 1949-10-21 | Refractory brick with high thermal conductivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE866022C true DE866022C (en) | 1953-02-05 |
Family
ID=7468620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES178A Expired DE866022C (en) | 1949-10-21 | 1949-10-21 | Refractory brick with high thermal conductivity |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE866022C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1047103B (en) * | 1954-02-23 | 1958-12-18 | Annawerk Ag | Highly fire-resistant ceramic composite body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1653918A (en) * | 1925-04-18 | 1927-12-27 | Norton Co | Silicon carbide article and method of making same |
-
1949
- 1949-10-21 DE DES178A patent/DE866022C/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1653918A (en) * | 1925-04-18 | 1927-12-27 | Norton Co | Silicon carbide article and method of making same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1047103B (en) * | 1954-02-23 | 1958-12-18 | Annawerk Ag | Highly fire-resistant ceramic composite body |
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