DE661848C - Process for the production of blast furnace slag cements - Google Patents

Process for the production of blast furnace slag cements

Info

Publication number
DE661848C
DE661848C DES117525D DES0117525D DE661848C DE 661848 C DE661848 C DE 661848C DE S117525 D DES117525 D DE S117525D DE S0117525 D DES0117525 D DE S0117525D DE 661848 C DE661848 C DE 661848C
Authority
DE
Germany
Prior art keywords
blast furnace
production
furnace slag
slag cements
portland cement
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
Application number
DES117525D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ciments De Thieu SA Des
Original Assignee
Ciments De Thieu SA Des
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ciments De Thieu SA Des filed Critical Ciments De Thieu SA Des
Application granted granted Critical
Publication of DE661848C publication Critical patent/DE661848C/en
Expired legal-status Critical Current

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
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
    • 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)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Description

Verfahren zur Herstellung von Hochofenschlackenzementen In dem Hauptpatent 6¢7 807 ist ein Verfahren zur Herstellung von Hochofenschlackenzement mit Calciumsulfat beschrieben.Process for making blast furnace slag cements In the main patent 6 ¢ 7 807 is a process for the production of blast furnace slag cement with calcium sulfate described.

Bei diesem Verfahren wird das Calci.umsulfat während 5 bis 15 Minuten bei einer Temperatur zwischen goo und 120o° C behandelt, bevor es mit den anderen Bestandteilen des Zementes gemahlen wird.In this process, the calcium sulfate is for 5 to 15 minutes Treated at a temperature between goo and 120o ° C before it with the others Components of the cement is ground.

Bei den üblichen Verfahren zur Herstellung von Hochofenschlackenzementen wird immer der Schlacke Portlandzementklinker oder Portlandzement oder Kalk als Katalysator zugegeben.In the usual processes for the production of blast furnace slag cements is always the slag as portland cement clinker or portland cement or lime Catalyst added.

Versuche, diesen Zusatz von Portlandzementklinker und Portlandzement oder Kalk zu ersetzen durch beträchtliche Zugabe von Gips, haben nicht zum Ziele geführt, und solche Verfahren weisen erhebliche Übelstände auf infolge der Instabilität des Gipses.Try adding portland cement clinker and portland cement to this or to replace lime with a considerable addition of gypsum are not the aim and such proceedings suffer from significant deficiencies as a result of instability of plaster.

Es wurde nun gefunden, daß diese Übelstände vermieden werden können und Zemente erhalten werden können dadurch, daß der Schlacke lediglich Calciums-ulfat zugesetzt wird runter der Bedingung, daß das Sulfat, wie oben beschrieben, vorbehandelt ist, d. h. calciniert während 5 bis 15 Minuten bei einer Temperatur zwischen goo und 120o° C. Die Zugabe von Portlandzementklinker oder Portlandzement oder Kalk ist dann unnötig, während es bei dem alten Verfahren zur Herstellung von Schlackenzementen, wobei nicht derart behandeltes Sulfat zugegen war, notwendig ist, Portlandzementklinker oder Portlandzement oder Kalk zuzugeben.It has now been found that these inconveniences can be avoided and cements can be obtained by adding only calcium sulfate to the slag is added on condition that the sulfate is pretreated as described above is, d. H. calcined for 5 to 15 minutes at a temperature between goo and 120o ° C. The addition of Portland cement clinker or Portland cement or lime is then unnecessary, while with the old process for the production of slag cements, where sulphate not treated in this way was present is necessary, portland cement clinker or add portland cement or lime.

Es ist klar, daß man gemäß der Erfindung Schlackenzemente mit vielen verschiedenen Schlacken herstellen kann lediglich mit dem bestimmten Calciumsulfat, gleichgültig, in welchem Anteilverhältnis das Sulfat in der Mischung vorliegt.It is clear that according to the invention, slag cements with many can produce various slags only with the specific calcium sulfate, regardless of the proportion in which the sulfate is present in the mixture.

Claims (1)

PATENTANSPRUCH: Abänderung des Verfahrens zur Herstellung von Hochofenschlackenzement nach Patent 647 807, gemäß dem die Hochofenschlacke mit einem während 5 bis 15 Minuten bei einer Temperatur zwischen goo und iaoo0 C behandelten Calciumsulfat gemeinsam vermahlen wird, dadurch gekennzeichnet, daß der Schlacke lediglich ein solches Calciumsulfat und keine anderen Zementbestandteile zugegeben werden.PATENT CLAIM: Modification of the process for the production of blast furnace slag cement according to patent 647 807, according to which the blast furnace slag with a for 5 to 15 minutes at a temperature between goo and iaoo0 C treated calcium sulfate together is milled, characterized in that the slag is only one such calcium sulfate and no other cement ingredients are added.
DES117525D 1934-03-23 1935-03-14 Process for the production of blast furnace slag cements Expired DE661848C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE661848X 1934-03-23

Publications (1)

Publication Number Publication Date
DE661848C true DE661848C (en) 1938-06-29

Family

ID=3877157

Family Applications (1)

Application Number Title Priority Date Filing Date
DES117525D Expired DE661848C (en) 1934-03-23 1935-03-14 Process for the production of blast furnace slag cements

Country Status (1)

Country Link
DE (1) DE661848C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831671C2 (en) * 1988-09-17 2000-08-10 Herbert Wethmar Gypsum cement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831671C2 (en) * 1988-09-17 2000-08-10 Herbert Wethmar Gypsum cement

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