AT67678B - Process for the production of hydraulic cement. - Google Patents
Process for the production of hydraulic cement.Info
- Publication number
- AT67678B AT67678B AT67678DA AT67678B AT 67678 B AT67678 B AT 67678B AT 67678D A AT67678D A AT 67678DA AT 67678 B AT67678 B AT 67678B
- Authority
- AT
- Austria
- Prior art keywords
- cement
- production
- hydraulic cement
- hydraulic
- lime
- Prior art date
Links
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
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Catalysts (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von hydraulischem Zement.
EMI1.1
<Desc/Clms Page number 2>
sprechend den von dein fertigen Zement zu forderndon Featigkoitseigenschaften abgeändert werden. Bei Anwendung von 30% Gicbtstaub und 70% gelöschtem Kalk illt oin Zement erhalten worden, welcher bei vorgenommenen Festigkeitsproben in einer Mischung von drei Gewichtsteilen Normalsand auf einen Gewichtsteil Zement eine Druckfestigkeit von 209kg/cm2 nach 8 Tagen Bindezeit und von 224 kgfcml nach 28 Tagen Bindezeit aufwies.
Die theoretische Erklärung der oben beschriebenen Eigenschaft des Gichtstaubes, mit Kalk einen hydraulischen Zement zu bilden, liegt möglicherweise darin, dass dieser Staub grosse Mengen in verdünnter Salzsäure und verdünnter Sodalösung lösliche Kieselsäure oder Tonerde, welche mit dem Kalk beim Binden leicht in Reaktion treten können, enthält. Bei Untersuchungen des Gichtstaubes von den Filtern eines Trocken-Gaareinigungsapparates ist ein Gehalt von in dieser Weise löslicher Kieselsäure von etwa 30% und von Tonerde von etwa 20% gefunden worden.
Anstatt den Gichtstaub mit gewöhnlichem gebranntem Kalk zu vermischen, kann man denselben auch in Zement verschiedener Art, z. B. Portlandzement, Schlackenzement oder Puzzolanzement oder in hydraulischen Kalk einmischen, wodurch die Mischung Festigkeitseigenschaften erlangt, welche die des gewöhnlichen Zementes bzw. des hydrauHschen Katkes allein wesentlich übertreffen. Ein Zusatz von bis zu 30% Gichtstaub hat sich als vorteilhaft erwiesen und bei einem Zusatz von 20 bis 30% ist eine Vermehrung der Festigkeit um 20 bis 30% beobachtet worden.
Die Erklärung dieser Wirkung dürfte wahrscheinlich darin zu finden sein, dass sowohl gewöhnlicher Zement als auch hydraulischer Kalk eine bedeutende Menge von Kalk, welche sonst untätig bleibt, enthalten, die aber durch den Zusatz von Gichtstaub dazu gebracht wird, mit demselben beim Binden des Zementes in Reaktion zu treten und dadurch die Festigkeit des Zementes zu erhöhen.
PATENT-ANSPRÜCHE :
1. Verfahren zur Herstellung von hydraulischem Zement, dadurch gekennzeichnet, dass auf trockenem Wege gewonnener Gichtstaub, der zweckmässig von den groben Teilchen befreit ist, mit gebranntem Kalk (gelöscht oder ungelöscht) vermischt wird.
<Desc / Clms Page number 1>
Process for the production of hydraulic cement.
EMI1.1
<Desc / Clms Page number 2>
According to the requirement of your finished cement, the feature properties are modified. With the use of 30% gicbtstaub and 70% slaked lime, oin cement was obtained, which, when strength tests were carried out in a mixture of three parts by weight of normal sand to one part by weight of cement, had a compressive strength of 209 kg / cm2 after 8 days of binding time and of 224 kgfcml after 28 days of binding time exhibited.
The theoretical explanation of the above-described property of gout dust to form a hydraulic cement with lime is possibly that this dust contains large quantities of silica or clay soluble in dilute hydrochloric acid and dilute soda solution, which can easily react with the lime when it binds, contains. In investigations of the gout dust from the filters of a dry cooker cleaning apparatus, a content of silica soluble in this way of about 30% and of clay of about 20% has been found.
Instead of mixing the gout dust with ordinary quicklime, it can also be mixed with cement of various types, e.g. B. Portland cement, slag cement or pozzolan cement or mix in hydraulic lime, whereby the mixture achieves strength properties which significantly exceed those of the ordinary cement or the hydraulic catalytic converter alone. An addition of up to 30% gout dust has proven to be advantageous and with an addition of 20 to 30% an increase in strength by 20 to 30% has been observed.
The explanation for this effect is probably to be found in the fact that both ordinary cement and hydraulic lime contain a considerable amount of lime, which otherwise remains inactive, but which, by the addition of gout dust, is made to move with it when the cement is bound To react and thereby increase the strength of the cement.
PATENT CLAIMS:
1. A process for the production of hydraulic cement, characterized in that dry dust, which is expediently freed from the coarse particles, is mixed with quicklime (slaked or unslaked).
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE620X | 1912-08-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT67678B true AT67678B (en) | 1915-01-25 |
Family
ID=82801980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT67678D AT67678B (en) | 1912-08-19 | 1912-12-21 | Process for the production of hydraulic cement. |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT67678B (en) |
FR (1) | FR452399A (en) |
GB (1) | GB191302239A (en) |
NL (1) | NL620C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4087285A (en) * | 1973-06-01 | 1978-05-02 | Kurz Fredrik W A | Method for strengthening vitreous products and composition boards |
US5245122A (en) * | 1992-08-26 | 1993-09-14 | Conversion Systems, Inc. | Method and mixture for treating electric arc furnace dust |
-
1912
- 1912-12-21 AT AT67678D patent/AT67678B/en active
- 1912-12-26 FR FR452399A patent/FR452399A/en not_active Expired
- 1912-12-28 NL NL1821A patent/NL620C/en active
-
1913
- 1913-01-28 GB GB191302239D patent/GB191302239A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR452399A (en) | 1913-05-15 |
GB191302239A (en) | 1913-12-18 |
NL620C (en) | 1915-04-01 |
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