DE151588C - - Google Patents
Info
- Publication number
- DE151588C DE151588C DENDAT151588D DE151588DA DE151588C DE 151588 C DE151588 C DE 151588C DE NDAT151588 D DENDAT151588 D DE NDAT151588D DE 151588D A DE151588D A DE 151588DA DE 151588 C DE151588 C DE 151588C
- Authority
- DE
- Germany
- Prior art keywords
- slag
- cement
- lime
- firing
- blast furnace
- 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
- 239000002893 slag Substances 0.000 claims description 9
- 239000011398 Portland cement Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000001590 oxidative Effects 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 6
- 235000015450 Tilia cordata Nutrition 0.000 description 6
- 235000011941 Tilia x europaea Nutrition 0.000 description 6
- 239000004568 cement Substances 0.000 description 6
- 239000004571 lime Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N Silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000010583 slow cooling 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die Herstellung von Portlandzement in der Weise, daß wassergekörnte, basische Hochofenschlacke mit einem Kalkgehalt von 50 Prozent in einem Brennofen bis zur Sinterung gebrannt, darauf abgekühlt und schließlich fertig vermählen wird, ist bekannt.The production of Portland cement in such a way that water-grained, basic blast furnace slag Burned with a lime content of 50 percent in a kiln until sintered, then cooled and finally is known to be finished.
Der Erfinder hat jedoch gefunden, daß man aus solcher Hochofenschlacke einen guten Zement von der Farbe, dem spezifischenHowever, the inventor has found that one can from such blast furnace slag a good cement by the color, the specific
ίο Gewicht und der Festigkeit des Portlandzements erzielen kann, wenn man die mit oxydierender Flamme gebrannte Schlacke einer plötzlichen, trockenen Abkühlung unterwirft. ίο the weight and strength of the portland cement can be achieved by subjecting the slag burned with an oxidizing flame to a sudden, dry cooling.
Durch· diese Maßnahme wird eine größere Sprödigkeit und krause Beschaffenheit der Schlacke, erzielt, zufolge welcher Eigenschaften letztere sich leichter vermählen läßt. Ferner wird hierdurch der Herstellungsprozeß abgekürzt, und namentlich wird auch hierbei erreicht, daß Luft, Kohlensäure oder Feuchtigkeit eine Zersetzung des Zements in Kieselsäure und Kalk nicht bewirken können, die hydraulischen Eigenschaften des Zements also infolge der plötzlichen Abkühlung bessere bleiben als bei einer langsamen Abkühlung oder bei Körnung in Wasser.This measure increases the brittleness and frizziness of the Slag, achieved, according to which properties the latter is easier to grind. Furthermore, this shortens the manufacturing process, and here too, in particular causes air, carbon dioxide or moisture to decompose the cement into silicic acid and lime cannot affect the hydraulic properties of the cement stay better as a result of the sudden cooling than with a slow cooling or in the case of grain in water.
Nach neueren Versuchen ist nämlich das chemische Hauptmoment bei der Erhärtung des Zements die Verbindung von Kieselsäure und Kalk ,so daß, wenn durch Zutretenlassen der Luft, Kohlensäure und Feuchtigkeit sich Kalk abscheidet, die Bedingungen für das Eingehen einer solchen chemischen Verbindung gestört und die hydraulischen Eigenschaften des Zements vermindert werden.According to more recent tests, the main chemical factor is the hardening process The cement is the compound of silica and lime, so that when allowed to enter Lime is deposited in the air, carbonic acid and moisture, the conditions for such a chemical to enter into Connection disrupted and the hydraulic properties of the cement are reduced.
Bei der Ausführung des neuen Verfahrens wird zweckmäßigerweise wie folgt vorgegangen. The following procedure is expediently carried out when carrying out the new method.
Das Brennen der Schlacke, welche erforderlichenfalls, d. h. bei einem Kalkgehalt von weniger als 50 Prozent, vorher gattiert und durch geeigneteThe burning of the slag, which, if necessary, d. H. with a lime content of less than 50 percent, charged beforehand and through suitable
ZuschlägeSurcharges
verbessertimproved
werden kann, erfolgt schon der gleichmäßigen Mischung wegen am besten im rotierenden Ofen, aus welchem dann die mit oxydierender Flamme gebrannte Masse in voller Brennhitze in möglichster Verteilung und in größter Schnelligkeit gegen scharf abgekühlte, trockene Flächen geschleudert wird, ähnlich wie dies für flüssige Hochofenschlacke aus der amerikanischen Patentschrift 687524 bekannt ist, jedoch mit dem Unterschied, daß eine solche Luftzuführung wie bei diesem Verfahren nicht stattfindet. Wesentlich ist hierbei, daß der plötzliche Abkühlungsprozeß und die Abschreckung sofort und unmittelbar auf den Brennprozeß folgt und mit Bezug auf die Schlacke auf trockenem Wege bewerkstelligt wird. .because of the even mixing, it is best done in a rotating manner Furnace, from which the mass burned with an oxidizing flame is then in full burning heat in the greatest possible distribution and with the greatest speed against sharply cooled, dry ones Flats is flung, similar to this for liquid blast furnace slag from the American Patent 687524 is known, but with the difference that such an air supply as in this method is not takes place. What is essential here is that the sudden cooling process and the deterrent immediately and immediately follows the firing process and with reference to the Slag is accomplished in a dry way. .
Die plötzliche Abkühlung bewirkt also, daß die durch die hohen Temperaturen aufgeschlossenen Hydraulefaktoren Kalk-, Kiesel-, Tonverbindungen ihre volle Energie behalten und nicht durch Aufnahme von Sauerstoff, Kohlensäure oder Feuchtigkeit eine Umlagerung der Moleküle oder eine Dissoziation der im Feuer erlangten ZusammensetzungThe sudden cooling causes the high temperatures to open up Hydraulic factors lime, silica, clay compounds retain their full energy and not through the absorption of oxygen, Carbonic acid or moisture a rearrangement of the molecules or a dissociation the composition obtained in the fire
(Z. Auflage, ausgegeben am 12. Mai(Zth edition, issued May 12th
eintritt, so daß das abgeschreckte Gut nur noch der Vermahlung bedarf, um einen fertigen Zement zu bilden.occurs, so that the quenched good only needs to be ground to get one ready to form cement.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE151588C true DE151588C (en) | 1900-01-01 |
Family
ID=418401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT151588D Expired DE151588C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE151588C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE916877C (en) * | 1937-12-01 | 1954-08-19 | Fuller Co | Method and device for burning and cooling Portland cement clinker, in particular that which contains magnesia |
-
0
- DE DENDAT151588D patent/DE151588C/de not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE916877C (en) * | 1937-12-01 | 1954-08-19 | Fuller Co | Method and device for burning and cooling Portland cement clinker, in particular that which contains magnesia |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE966860C (en) | Compounds and bodies containing boron nitride and processes for their production | |
EP0409014A1 (en) | Process for the manufacture of fuel briquettes | |
DE2056567C3 (en) | Process for the manufacture of a carbon-containing, refractory product | |
DE151588C (en) | ||
DE829419C (en) | Process for the production of refractory bricks from sintered or melted dolomite | |
DE865720C (en) | Tubular or almost tubular guide body for burning and hot gases or vapors | |
DE855516C (en) | Process for the production of refractory bricks from dolomite | |
AT275392B (en) | Process for increasing the storage stability of refractory bricks | |
DE722463C (en) | Process for the production of hexachloroethane and mixtures thereof with perchlorethylene | |
DE867072C (en) | Process for the production of refractory bricks and steam masses from sintered dolomite | |
AT123505B (en) | Method of firing bricks of high strength. | |
DE874268C (en) | Process for the production of dolomite stones | |
DE663453C (en) | Process for the production of high-pore ceramic products | |
DE3939018C1 (en) | Method of making furnace briquettes - has raw sand and carbon carrying material mixes before heating | |
DE2757433A1 (en) | METHOD FOR PRODUCING BRICKS | |
DE749705C (en) | Process for the production of cements containing calcium sulphate | |
AT137666B (en) | Process for the production of highly refractory items from zirconium oxide. | |
DE743888C (en) | Process for the production of a concrete hardening aggregate | |
DE1592146C (en) | Process for the production of caustic magnesia or sintered magnesia with a reduced iron content | |
DE1671652C3 (en) | Process for the production of a refractory body from granular silicon carbide with silicon oxynitride bond | |
DE293221C (en) | ||
DE973312C (en) | Process for the production or revitalization of activated carbon | |
AT162898B (en) | Process for the production of perchlorethylene, optionally mixed with hexachloroethane | |
DE938177C (en) | Process for the production of refractory bricks and ramming masses | |
DE517959C (en) | Heat-resistant mortar |