DE344840C - - Google Patents
Info
- Publication number
- DE344840C DE344840C DENDAT344840D DE344840DA DE344840C DE 344840 C DE344840 C DE 344840C DE NDAT344840 D DENDAT344840 D DE NDAT344840D DE 344840D A DE344840D A DE 344840DA DE 344840 C DE344840 C DE 344840C
- Authority
- DE
- Germany
- Prior art keywords
- mixture
- binding
- heat
- zirconium oxide
- refractory
- 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.)
- Active
Links
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 16
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N Silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000000479 mixture part Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000036462 Unbound Effects 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
- 239000011230 binding agent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- 229910052846 zircon Inorganic materials 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
-
- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
-
- 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
- C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Description
Verfahren zur Bindung und Festigung von Körpern aus Zirkonoxyd oder Zirkonerde. Es gibt hochfeuerfeste Stoffe, wie z. B. die Zirkonerde, welche bis 22oo° C im Feuer steht. Diese Masse hat dabei aber dieEigenschaft, daß sie die Wärme außerordentlich schlecht fortleitet, so daß nur die äußere Schicht, durch welche die Hitze hindurchgeht, eine genügende Oberflächenbindung erreicht, während die darunterliegenden Schichten mangels genügender Erhitzung nicht so abbinden, daß ein festes Gefüge erzielt wird.Process for binding and strengthening bodies made of zirconium oxide or Zirconia. There are highly refractory materials, such as B. the zirconia, which up 22oo ° C in the fire. But this mass has the property that it absorbs heat passes extremely poorly, so that only the outer layer through which the heat passes through it achieves a sufficient surface bond while the due to insufficient heating, do not set the underlying layers in such a way that a solid structure is achieved.
Es ist deshalb ganz unmöglich, Überzüge oder Vollsteine aus Zirkonerde herzustellen, weil die untere Seite des Überzuges bzw. der innere Teil des Steines erdig und ohne Bindung bleibt, so daß der Stein leicht bricht und der Überzug beispielsweise auf einen Schamottestein nicht an demselben haftet, sondern ohne Bindung mit diesem bleibt. Das Verfahren bezweckt nun, ein Bindemittel zu schaffen, welches bei höchster Feuerfestigkeit eine gute Wärmeleitung besitzt und durch innige Vermischung mit der Zirkonerde die Hitze beim Brennen von allen Seiten durch die Zirkonmasse leitet.It is therefore quite impossible to have coatings or solid stones made of zirconia to produce because the lower side of the coating or the inner part of the stone remains earthy and unbound, so that the stone breaks easily and the coating, for example on a firebrick does not adhere to the same, but has no bond with it remain. The purpose of the process is to create a binding agent which, at the highest Fire resistance possesses good heat conduction and through intimate mixing with the zirconia conducts the heat through the zirconia from all sides during firing.
Für eine solche Beimischung eignet sich vor allem Siliziumkarbid und geschmolzene Tonerde. Diese beiden Stoffe sind erstens hochfeuerfest, zweitens außerordentlich gute Wärmeleiter und bleiben bis zur praktisch höchsten Temperatur im Feuer hart.Silicon carbide is particularly suitable for such an admixture molten clay. These two substances are firstly highly fire-resistant and secondly extraordinary good heat conductors and remain hard up to practically the highest temperature in the fire.
Das Verfahren wird ausgeübt, indem man der Zirkonerde einen genügenden Prozentsatz Siliziumkarbid bzw. elektrisch geschmolzene Tonerde beimischt und dann das Ganze mittels einer Flüssigkeit zu einem streichfähigen oder knetbaren Ganzen anrührt. Der Prozentsatz richtet sich jeweils nach der Brenndauer. Bei geringerer Brenndauer sind größere Mengen leitfähiger Masse zuzusetzen, bei langer Brenndauer genügen geringere Mengen. Von dieser Masse werden nun entweder Überzüge, dünnwandige Körper oder Vollsteine gemacht. Bei all diesen Stücken ist nun nach der Trocknung eine innere Zusammensetzung derart, daß zwischen den einzelnen Teilchen des Zirkons Teilchen von; Siliziumkarbid bzw.The procedure is practiced by adding a sufficient amount of zirconia Percentage of silicon carbide or electrically fused alumina is added and then the whole thing by means of a liquid to a spreadable or kneadable whole touches. The percentage depends on the burning time. With less If the burning time is longer, add larger quantities of conductive material smaller amounts are sufficient. From this mass either coatings, thin-walled Solid or made of solid stones. All of these pieces are now after they have dried an internal composition such that between the individual particles of zircon Particles of; Silicon carbide or
. geschmolzener Tonerde eingelagert sind, welche gewissermaßen die Heizelemente in der Masse darstellen.. molten alumina are stored, which to a certain extent the Represent heating elements in the crowd.
Beim Brennen erhitzt sich die oberste Schicht sehr erheblich und die an dieser Stelle auflagernden Körnchen von Siliziumkarbid und geschmolzener Tonerde leiten die Hitze zu den gleichartigen innen liegenden Körnern über, welche durch Ausstrahlung auf die umgebende Zirkonmasse einwirken, so daß es also möglich ist, eine durch und durch gleichmäßig, gebrannte Masse zu erreichen, welche überdies noch den Vorzug hat, auch bei höheren Hitzegraden fest zu bleiben, was durch das Gefüge der Siliziumkarbid- und geschmolzenen Tonerdeteilchen erreicht wird.When burning, the top layer heats up very considerably and the granules of silicon carbide and fused alumina deposited at this point transfer the heat to the similar internal grains, which through Radiation act on the surrounding zirconium mass, so that it is possible to achieve a thoroughly even, burned mass, which moreover still has the advantage of remaining firm even at higher degrees of heat, which is caused by the Structure of the silicon carbide and molten alumina particles is achieved.
Die vorteilhafte Einwirkung eines Zusatzes von Karborundum oder geschmolzener Tonerde zu feuerfesten Oxyden, außer Zirkonoxyd, die ohne diesen Zusatz einen brüchigen Stein ergeben, ist an sich bekannt.The beneficial action of an addition of carborundum or molten Alumina to refractory oxides, with the exception of zirconium oxide, which are brittle without this addition Surrender to stone is known per se.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE344840C true DE344840C (en) |
Family
ID=573451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT344840D Active DE344840C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE344840C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2465672A (en) * | 1943-10-20 | 1949-03-29 | Selas Corp Of America | Refractory composition and method of making |
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0
- DE DENDAT344840D patent/DE344840C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2465672A (en) * | 1943-10-20 | 1949-03-29 | Selas Corp Of America | Refractory composition and method of making |
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