AT162921B - Process for the production of volumetric magnesite bricks and masses - Google Patents
Process for the production of volumetric magnesite bricks and massesInfo
- Publication number
- AT162921B AT162921B AT162921DA AT162921B AT 162921 B AT162921 B AT 162921B AT 162921D A AT162921D A AT 162921DA AT 162921 B AT162921 B AT 162921B
- Authority
- AT
- Austria
- Prior art keywords
- magnesite
- masses
- production
- volumetric
- bricks
- Prior art date
Links
- 239000001095 magnesium carbonate Substances 0.000 title claims description 11
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 title claims description 11
- 229910000021 magnesium carbonate Inorganic materials 0.000 title claims description 11
- 235000014380 magnesium carbonate Nutrition 0.000 title claims description 11
- 239000011449 brick Substances 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 claims 1
- 239000004575 stone Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung raumbeständiger Magnesitsteine und-massen
Die Erfindung bezieht sich auf raumbeständige
Magnesitsteine und-massen. Es ist bekannt, dass man aus solchen Massen durch Beimischung von metallischen Stoffen, die während des nachfolgenden Brandes bzw. im Ofen verschlacken und durch die damit verbundene Volumsvergrösserung die Schwindung des Magnesits kompensieren, raumbeständige Steine erhält.
Durch Versuche wurde festgestellt, dass diese Beimischung insbesondere dann hervorragende Raumbeständigkeit der Steine gewährleistet, wenn der Zuschlag 1 bis 10 Gew.-%, vorzugsweise 2 bis 5% an 45 bis 90% igem Ferrosilizium beträgt, wobei dessen Krönung 0 bis 3 mm, vorzugsweise 0-3 bis 2 mm betragen muss.
Beispielsweise wurden einem Sintermagnesit der folgenden chemischen Zusammensetzung : MgO über 82%, FeOg etwa 8%, Si02 etwa 1 t%, CaO etwa 3% und normaler für die Herstellung von Magnesitsteinen üblicher Körnung, 4t Gew.-% trockenes, gemahlenes 90% iges Ferrosilizium üblicher Handelsqualität in der Körnung 0 bis 3 mm zugesetzt.
Das Material wurde auf einem Kollergang mit entlasteten Läufern unter Zusatz von Sulfit- ablauge und Wasser wie üblich gründlich gemischt und sodann hydraulisch verpresst. Nach dem keramischen Steinbrand zeigten diese Steine eine Volumsvergrösserung von 0. 5%, während Steine ohne Zusatz von Ferrosilizium, welche aus genau dem gleichen Sintermagnesit, der gleichen Körnung und nach vollkommen gleicher Behandlung hergestellt waren, eine Schwindung von 2-8 Vol.-% aufwiesen.
Nach wiederholtem und längerem Erhitzen zeigten die mit Ferrosilizium hergestellten Steine ein ganz geringfügiges Schwinden auf etwa ihr Ausgangsmass, während die normalen Magnesitsteine weiter in nicht unbeträchtlichem Masse schwinden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of volumetric magnesite bricks and masses
The invention relates to space persistent
Magnesite bricks and masses. It is known that by adding metallic substances that form slag during the subsequent fire or in the furnace and compensate for the shrinkage of the magnesite due to the associated increase in volume, stones that are stable in volume are obtained from such masses.
Tests have shown that this admixture ensures excellent dimensional stability of the stones in particular when the addition is 1 to 10% by weight, preferably 2 to 5%, of 45 to 90% ferrosilicon, with its crown being 0 to 3 mm, preferably Must be 0-3 to 2 mm.
For example, a sintered magnesite with the following chemical composition: MgO over 82%, FeOg about 8%, SiO2 about 1 t%, CaO about 3% and normal grain size for the production of magnesite bricks, 4t wt .-% dry, ground 90% Ferrosilicon of the usual commercial quality in a grain size of 0 to 3 mm is added.
The material was thoroughly mixed as usual on a pan mill with relieved runners with the addition of sulphite waste liquor and water and then pressed hydraulically. After the ceramic stone firing, these stones showed an increase in volume of 0.5%, while stones without the addition of ferrosilicon, which were made from exactly the same sintered magnesite, the same grain size and after completely the same treatment, had a shrinkage of 2-8% by volume. exhibited.
After repeated and prolonged heating, the bricks made with ferrosilicon showed a very slight shrinkage to about their original size, while the normal magnesite bricks continued to shrink to a not inconsiderable extent.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT162921T | 1946-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT162921B true AT162921B (en) | 1949-04-25 |
Family
ID=3651939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT162921D AT162921B (en) | 1946-03-27 | 1946-03-27 | Process for the production of volumetric magnesite bricks and masses |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT162921B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204570B (en) * | 1962-06-13 | 1965-11-04 | Chamotte Ind | Process for the production of unfired refractory SiC masses |
-
1946
- 1946-03-27 AT AT162921D patent/AT162921B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204570B (en) * | 1962-06-13 | 1965-11-04 | Chamotte Ind | Process for the production of unfired refractory SiC masses |
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