DE158363C - - Google Patents
Info
- Publication number
- DE158363C DE158363C DENDAT158363D DE158363DA DE158363C DE 158363 C DE158363 C DE 158363C DE NDAT158363 D DENDAT158363 D DE NDAT158363D DE 158363D A DE158363D A DE 158363DA DE 158363 C DE158363 C DE 158363C
- Authority
- DE
- Germany
- Prior art keywords
- slag
- lime content
- cement
- percent
- water
- 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
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 235000015450 Tilia cordata Nutrition 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000008207 working material Substances 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000000463 material Substances 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
- C04B7/147—Metallurgical 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
η . η. Ο ΰΐ> I Ι,, ,.f. η. η. Ο ΰΐ> I Ι ,,, .f.
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die vorliegende Erfindung betrifft eine Verbesserung bezw. Vereinfachung des durch Patent 153056 geschützten Verfahrens zur Herstellung von Portlandzement aus Hoch-5 ofenschlacke. Bei diesem Verfahren wird bekanntlich die in Wasser gekörnte Schlacke in einem geeigneten Brennofen gebrannt und das Brennprodukt abgekühlt und schließlich gemahlen. Arbeitsmaterial hierbei bildet eine solche in Wasser gekörnte Hochofenschlacke, welche einen natürlichen Kalkgehalt von etwa 50 Prozent besitzt. Man war bis jetzt der Anschauung, daß eine Schlacke minderen Kalkgehalts sich für dieses einfache Verfahren nicht eignet, also nach ihrer Bearbeitung durch Brennen, Abkühlung und Mahlung keinen brauchbaren Zement ergeben würde, und infolgedessen ist bisher davon Abstand genommen worden, solche Schlacke minderen Kalkgehalts durch das vorbeschriebene Verfahren auszubeuten.The present invention relates to an improvement BEZW. Simplification of the Process for the production of Portland cement from high-5, protected by patent 153056 furnace slag. In this process, it is known that the slag grained in water is removed fired in a suitable kiln and the fired product cooled and finally ground. The working material here is formed by blast furnace slag grained in water, which has a natural lime content of around 50 percent. One was until now the belief that a slag with a low lime content is suitable for this simple process not suitable, i.e. after processing it by firing, cooling and grinding it would not result in a usable cement, and consequently refrain from reducing such slag Exploit lime content by the method described above.
Neuere Versuche haben jedoch gezeigt, daß diese Anschauung nicht zutreffend ist; es hat sich vielmehr ergeben, daß auch eine in Wasser gekörnte Schlacke mit weniger als 50 Prozent Kalkgehalt, welche bisher eben infolge ihres minderen Kalkgehalts als nicht verwendungsfähig betrachtet wurde, dennoch als Arbeitsmaterial zur Herstellung eines brauchbaren Zementes auf dem beschriebenen Wege ausbeutungsfähig wird.However, recent attempts have shown that this view is not correct; Rather, it has been found that even a slag grained in water with less than 50 percent lime content, which so far just because of their lower lime content than not was considered usable, nevertheless as working material for the production of a Usable cement becomes exploitable in the way described.
So ergab beispielsweise ein aus Schlacke von 45,7 Prozent Kalkgehalt hergestellter Zement nach einer Erhärtung'szeit von 7 Tagen eine durchschnittliche Zugfestigkeit von 20,9 kg, also ungefähr 5 kg oder über 30 Prozent mehr, als sie Portlandzement bei einer Erhärtungsdauer von 28 Tagen nach den maßg'ebenden Normen besitzen muß. Bei dieser letzteren Erhärtungszeit erlangte der gemäß der Neuerung aus dem vorerwähnten Material hergestellte Zement eine durchschnittliche Zugfestigkeit von 24,58 kg, also ungefähr 8,5 kg oder über 53 Prozent mehr als normaler Portlandzement.For example, one produced from slag with a 45.7 percent lime content Cement has an average tensile strength of 20.9 kg after a hardening time of 7 days, So about 5 kg or over 30 percent more than Portland cement with one setting time of 28 days according to the relevant standards. At this the latter setting time was achieved according to the innovation from the above-mentioned material cement produced has an average tensile strength of 24.58 kg, i.e. approximately 8.5 kg or over 53 percent more than regular portland cement.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE158363C true DE158363C (en) | 1900-01-01 |
Family
ID=424548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT158363D Expired DE158363C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE158363C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3320977C1 (en) * | 1983-06-10 | 1984-12-20 | Prodan Antriebselemente GmbH, 7033 Herrenberg | Multi-plate clutch |
-
0
- DE DENDAT158363D patent/DE158363C/de not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3320977C1 (en) * | 1983-06-10 | 1984-12-20 | Prodan Antriebselemente GmbH, 7033 Herrenberg | Multi-plate clutch |
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