DE5869C - Process for the production of refractory basic bricks by means of quantities of magnesia-containing limestone with small quantities of silica, alumina and iron oxide, shaping the mass into bricks and firing them with white glowing heat - Google Patents
Process for the production of refractory basic bricks by means of quantities of magnesia-containing limestone with small quantities of silica, alumina and iron oxide, shaping the mass into bricks and firing them with white glowing heatInfo
- Publication number
- DE5869C DE5869C DENDAT5869D DE5869DA DE5869C DE 5869 C DE5869 C DE 5869C DE NDAT5869 D DENDAT5869 D DE NDAT5869D DE 5869D A DE5869D A DE 5869DA DE 5869 C DE5869 C DE 5869C
- Authority
- DE
- Germany
- Prior art keywords
- bricks
- quantities
- silica
- magnesia
- alumina
- 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
- 239000011449 brick Substances 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title description 20
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title description 16
- 239000000377 silicon dioxide Substances 0.000 title description 10
- 239000000395 magnesium oxide Substances 0.000 title description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title description 6
- 235000019738 Limestone Nutrition 0.000 title description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title description 6
- 229910000460 iron oxide Inorganic materials 0.000 title description 6
- 239000006028 limestone Substances 0.000 title description 6
- 238000010304 firing Methods 0.000 title description 2
- 238000000034 method Methods 0.000 title description 2
- 238000007493 shaping process Methods 0.000 title description 2
- 239000000203 mixture Substances 0.000 description 9
- 239000004927 clay Substances 0.000 description 7
- 229910052570 clay Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000011451 fired brick Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/104—Ingredients added before or during the burning process
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Description
1878.1878.
PATENTSCHRIFTPATENT LETTERING
lm ..„-Klasse ΒΟ.τπτ l m .. "- class ΒΟ.τπτ
SIDNEYGILCHRIST7THOMASINBATTERSEA(EnGLANd).SIDNEYGILCHRIST 7 THOMASINBATTERSEA (ENGLAND).
Verfahren zur Herstellung von feuerfesten basischen Ziegeln durch Mischen von magneslahaltigem Kalkstein mit geringen Mengen von Kieselsäure, Thonerde und Eisenoxyd, Formen der Masse zu Ziegeln und Brennen derselben bei Weilsglühhitze.Process for the production of refractory basic bricks by mixing magnesia-containing limestone with small amounts of silica, alumina and iron oxide, shaping the mass into bricks and firing the same at Weilsglühhitze.
Patentirt im Deutschen Reiche vom 5. October 1878 ab.Patented in the German Empire on October 5th, 1878.
Meine Neuerungen in der Erzeugung feuerfester basischer Ziegel bestehen in der Herstellung von Ziegeln aus magnesiahaltigem Kalkstein, welcher entweder von Natur aus gewisse Mengen von Kieselsäure und Thonerde enthält, oder diese besonders zugesetzt erhält. Ich ziehe vor, einen stark thonerdehaltigen, magnesiahaltigen Kalkstein zu nehmen, der von Natur aus 3 bis 4'/2 pCt. Thonerde und 5 bis 9 pCt. Kieselerde mit oder ohne etwas Eisenoxyd, welches 2 pCt. nicht übersteigen sollte, tenthält. Wenn ein Material von dieser Zusammensetzung nicht vorhanden ist, so kann eine Mischung von gleicher Zusammensetzung gemacht werden, indem man einen reineren, magnesiahaltigen Kalkstein nimmt und denselben mit soviel Thon oder Thonschiefer oder selbst mit einer sehr thonerdehaltigen Hochofenschlacke oder mit einem sehr thonerdehaltigen Kalkstein mischt, so dafs er die gewünschte Zusammensetzung erhält.My innovations in the production of refractory basic bricks consist in the production of bricks from magnesia-containing limestone, which either naturally contains certain amounts of silica and alumina, or these are specially added. I prefer to take a strong thonerdehaltigen, magnesian limestone, which inherently 3 to 4 '/ 2 per cent. Clay and 5 to 9 pCt. Silica with or without some iron oxide, which is 2 pCt. should not exceed. If a material of this composition is not present, a mixture of the same composition can be made by taking a purer, magnesia-containing limestone and mixing it with as much clay or clay slate, or even with a very high clay blast furnace slag or with a very high clay limestone, so that it has the desired composition.
Ein gutes Verhältnifs besteht aus 8 oder 9 pCt. ,Kieselerde, 4 pCt. Thonerde, 1 % pCt. Eisenoxyd. Der gebrannte Ziegel sollte zwischen 70 und 80 pCt. Kalk und Magnesia enthalten, der Rest aus Kieselerde, Thonerde und etwas Eisenoxyd bestehen. Je mehr Magnesia dabei vorhanden ist, desto besser ist es. Die Kieselsäure im gebrannten Ziegel sollte in keinem Falle 20 pCt. übersteigen. Die natürliche oder künstliche Mischung wird mit etwas Wasser sehr fein gemahlen, wobei Sorge getragen wird, dafs die Mischung so gleichartig als möglich werde. Die plastische Masse wird dann unter beträchtlichem Drucke zu Ziegeln geformt. Die Ziegel werden bei gelinder Wärme getrocknet. Sie werden dann bei einer intensiven Weifsglühhitze gebrannt, bis die ganze Thonerde und Kieselsäure eine Verbindung mit dem Kalk und der Magnesia gebildet hat. Diese sehr hohe Temperatur (beträchtlich diejenige übersteigend, bei welcher feuerfeste Thonziegel gebrannt werden) ist unbedingt nothwendig zur Erzeugung guter basischer Ziegel.A good ratio is 8 or 9 pct. , Silica, 4 pCt. Alumina, 1% pCt. Iron oxide. The fired brick should be between 70 and 80 pCt. Contain lime and magnesia that The remainder consist of silica, alumina and some iron oxide. The more magnesia there is is the better it is. The silica in the fired brick should in no case be 20 pCt. exceed. The natural or The artificial mixture is ground very finely with a little water, taking care that it is the mixture will be as homogeneous as possible. The plastic mass is then under considerable Prints shaped into bricks. The bricks are dried on a gentle heat. They are then given an intense white glow burned until all of the clay and silica combine with the lime and the Magnesia has formed. This very high temperature (considerably exceeding that at which refractory clay bricks are burned) is absolutely necessary for the production of good ones basic brick.
Die basischen Ziegel darf man nicht in Berührung mit kieselerdehaltigen Ziegeln im Ofen kommen lassen. Der Boden des Ofens kann aus basischen Ziegeln construirt werden. An allen Punkten, wo kieselerdehaltiges Material berührt werden könnte, mufs eine Lage von Talkstein (kieselsaure Magnesia) oder von anderem neutralen, feuerfesten Material, wie Graphit, dazwischengesetzt werden, oder das ganze Innere des Ofens· kann aus diesen basischen Ziegeln construirt werden. Es kann wünschenswerth sein, vor der Herstellung der ganzen Mischung für die Ziegel Versuchsziegel zu machen von so nahe als möglich der oben angegebenen Zusammensetzung und diese Versuchsziegel nach dem Trocknen bei sehr intensiver Temperatur zu brennen, und zwar nicht weniger als achtzehn Stunden lang. Wenn alsdann das Versuchsstück einen harten, compacten Ziegel bildet, so hat das gebrauchte Material die richtige Zusammensetzung. Wenn es geschmolzen ist, so ist zu viel Thonerde oder Eisenoxyd vorhanden. Wenn das Versuchsstück spröde ist und an der Luft bald in Stücke zerfällt, so ist zu wenig bindendes Material dabei. Die Ziegel sollen sowohl vor als während des Gebrauchs soviel als möglich trocken 'bewahrt werden.The basic bricks must not come into contact with bricks containing silica in the kiln let him come. The bottom of the furnace can be constructed of basic bricks. At All points where siliceous material could come into contact must have a layer of talc stone (silica magnesia) or other neutral, refractory material, such as graphite, interposed or the whole interior of the furnace can be constructed of these basic bricks will. It may be desirable to prepare the whole mixture for yourself before Make the bricks test bricks from as close as possible to the composition given above and to fire these test bricks, after drying, at a very intense temperature, not less than eighteen For hours. If the test piece then forms a hard, compact brick, then it has the material used has the right composition. If it's melted, so is it too much alumina or iron oxide present. If the test piece is brittle and on the air soon falls into pieces, there is too little binding material in it. The bricks should must be kept as dry as possible both before and during use.
Diese Ziegel sind besonders werthvoll zur Ausfütterung von Bessemer-Convertern und von Siemens-Martin-, Pernot-, Ponsard- und anderen offenen Herdstahlöfen, wo verlangt wird, Phosphor mittelst einer basischen Schlacke zu entfernen. These bricks are particularly valuable for lining Bessemer converters and for Siemens-Martin, Pernot, Ponsard and other open-hearth steel furnaces, where required, phosphorus to be removed by means of a basic slag.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE5869C true DE5869C (en) |
Family
ID=284193
Family Applications (1)
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DENDAT5869D Active DE5869C (en) | Process for the production of refractory basic bricks by means of quantities of magnesia-containing limestone with small quantities of silica, alumina and iron oxide, shaping the mass into bricks and firing them with white glowing heat |
Country Status (1)
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE923299C (en) * | 1945-01-03 | 1955-02-10 | Dolomitwerke Gmbh | Process to improve the air resistance of highly refractory dolomite bricks or ramming masses |
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0
- DE DENDAT5869D patent/DE5869C/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE923299C (en) * | 1945-01-03 | 1955-02-10 | Dolomitwerke Gmbh | Process to improve the air resistance of highly refractory dolomite bricks or ramming masses |
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