DE690523C - Process for the production of blast furnace slag cement - Google Patents

Process for the production of blast furnace slag cement

Info

Publication number
DE690523C
DE690523C DE1937S0126706 DES0126706D DE690523C DE 690523 C DE690523 C DE 690523C DE 1937S0126706 DE1937S0126706 DE 1937S0126706 DE S0126706 D DES0126706 D DE S0126706D DE 690523 C DE690523 C DE 690523C
Authority
DE
Germany
Prior art keywords
blast furnace
furnace slag
production
lime
slag 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
DE1937S0126706
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 DE690523C publication Critical patent/DE690523C/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 Hochofenschlackenzement In dem Patent 647 807 ist ein Verfahren zur Herstellung von Zement durch gemeinsames Vermahlen eines bei einer Temperatur zwischen goo und i2oo° C während 5 bis 15 Minuten calcinierten Calciumsulfats und Hochofenschlacke aufgezeigt.Method of making blast furnace slag cement In the patent 647 807 is a process for the production of cement by grinding together one calcined at a temperature between goo and 1200 ° C for 5 to 15 minutes Calcium sulphate and blast furnace slag shown.

Gemäß der Erfindung soll nun vor, während oder nach dem Vermahlen der Mischung von Hochofenschlacke und dem Calciumsulfat Kalk entweder als solcher oder als Portlandzementklinker in einer Menge von mindestens ungefähr o,21/, und höchstens ungefähr 0,5°1o Kalk auf 15 bis i8°ja Calciumsulfat zugesetzt werden.According to the invention, before, during or after grinding the mixture of blast furnace slag and the calcium sulphate lime either as such or as portland cement clinker in an amount of at least about o, 21 /, and a maximum of about 0.5 ° 10 lime to 15 to 18 ° yes calcium sulphate are added.

Dadurch können bestimmte Eigenschaften des Zementes ohne Verminderung z. B. der chemischen Widerstandsfähigkeit verbessert werden.This allows certain properties of the cement without diminishing z. B. the chemical resistance can be improved.

Insbesondere kann den Zementen Frühhochfestigkeit und auch eine ausgezeichnete Lagerbeständigkeit verliehen werden. Durch die Zufügung geregelter Mengen dieser Stoffe können den Sulfatschlackenzementen die Eigenschaften hochwertiger Portlandzemente oder Tonerdezemente je nach Wunsch gegeben werden.In particular, the cements can have early high strength and also excellent Storage stability can be conferred. By adding regulated amounts of these Substances can give the sulphate slag cements the properties of high-quality Portland cements or alumina cements can be given as required.

Die Menge dieser Zusätze soll im allgemeinen niedrig bleiben. Optimale Wirkungen werden bei Zufügung von o,2 bis o,5 °%a Kalk, sei es in Form von Kalk, sei es in Form von Portlandzementklinker, auf 15 bis 18 °/o Calciumsulfat der oben gekennzeichneten Art erzielt.The amount of these additives should generally remain low. Optimum effects are in addition of o, 2 to o, 5 °% a lime, whether in the form of lime, it is obtained in the form of Portland cement clinker, to 15 to 1 8 ° / o calcium sulphate of the type indicated above.

Das Verfahren nach der Erfindung ermöglicht es auch, unabhängig von der Natur des jeweils als Ausgangsstoff vorliegenden Calciumsulfats, Sulfatschlackenzemente zu erzeugen, die gleiche mechanische Festigkeiten wie hochwertige andere hydraulische Bindemittel aufweisen und gleichzeitig eine solche chemische Beständigkeit, wie sie nach der Arbeit von Le Chatelier-Anstett (F. Anstett: Essais et analyses des materiaux de construction et de travaux publics - S. 112) verlangt wird. Das Verfahren nach der Erfindung ermöglicht es, mit der größten Genauigkeit den Gehalt an freiem Kalk zu vermindern und zu regeln, je nach dem Steigen der Merige des Calciumsulfats, was nicht möglich wäre.' wenn ein Calciumsulfat benutzt würde, 'das' gleichzeitig freien Kalk enthält.The method according to the invention also makes it possible independently of the nature of the calcium sulphate present as the starting material, sulphate slag cements to produce the same mechanical strengths as high quality other hydraulic ones Have binders and at the same time have such chemical resistance as after the work of Le Chatelier-Anstett (F. Anstett: Essais et analyzes des materiaux de construction et de travaux publics - p. 112) will. The method according to the invention makes it possible with the greatest accuracy To reduce and regulate the content of free lime, according to the rise of the Merige of calcium sulphate, which would not be possible. ' if a calcium sulphate were used, 'that' also contains free lime.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Hochofenschlackenzement gemäß dem Hauptpatent 647 8o7 durch Vermahlung von Hochofenschlacke und während 5 bis 15 Minuten auf eine Temperatur zwischen 9oo und r2oo° C erhitztem Calciumsulfat, dadurch gekennzeichnet, daß dem Gemisch von Hochofenschlacke und Calciumsulfat vor, während oder nach der Vermahlung der Mischung von Hochofenschlacke und Calciumsulfat Kalk entweder als solcher oder als Portland-_zementklinker in einer Menge von mindestens ungefähr o,2010 und höchstens ungefähr o,5010 Kalk auf 15 bis 18% Calciumsulfat zugesetzt wird.PATENT CLAIM: Process for the production of blast furnace slag cement according to the main patent 647 8o7 by grinding blast furnace slag and calcium sulfate heated for 5 to 15 minutes to a temperature between 900 and r2oo ° C, characterized in that the mixture of blast furnace slag and calcium sulfate before, during or after Milling of the mixture of blast furnace slag and calcium sulphate lime either as such or as Portland cement clinker in an amount of at least about 0.110 and at most about 0.5010 lime to 15 to 18% calcium sulphate is added.
DE1937S0126706 1936-04-04 1937-04-04 Process for the production of blast furnace slag cement Expired DE690523C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE690523X 1936-04-04

Publications (1)

Publication Number Publication Date
DE690523C true DE690523C (en) 1940-04-27

Family

ID=3878041

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937S0126706 Expired DE690523C (en) 1936-04-04 1937-04-04 Process for the production of blast furnace slag cement

Country Status (1)

Country Link
DE (1) DE690523C (en)

Similar Documents

Publication Publication Date Title
DE2043747B2 (en) PROCESS FOR MANUFACTURING EARLY STRENGTH CEMENT
DE690523C (en) Process for the production of blast furnace slag cement
DE2362969A1 (en) FIRE-RESISTANT ZIRCONIUM MASS
DE1083740B (en) Process for the production of refractory alumina cements
DE878621C (en) Process for the production of gypsum slag cement
DE2027288B2 (en) MEASURES TO CONTROL THE EXPANSION OF CEMENT AND THE METHOD OF MANUFACTURING IT
DE518905C (en) Slag cement made from blast furnace slag and Portland cement
DE831971C (en) Process for the production of Sorel cement
DE749705C (en) Process for the production of cements containing calcium sulphate
AT133742B (en) Process for the production of white cement from colored, e.g. B. ferrous raw materials.
DE748060C (en) Compound for the production of foundry molds using under-hydrated cement
AT320513B (en) Cement or cement concrete and process for their manufacture
DE707570C (en) Process for the production of sintered magnesia
DE804536C (en) Process for the production of magnesia cement of the Sorel cement type
DE561412C (en) Process for the production of white, yellow or redish cements
DE2239251C3 (en) Self-hardening molding sand mixtures for the production of casting molds and casting cores
DE914951C (en) Compound to accelerate the setting of cementitious mortars or concrete mixes
DE2162053C3 (en) Cement expanders
DE887268C (en) Process for sintering ores
DE880108C (en) Process for facilitating sintering when firing mineral masses, in particular cement, and fluxes for this
DE653648C (en) Process to increase the improvement effect of Si-material on cements and cement mortars
DE744064C (en) Process for the production of mixed cements
DE736310C (en) Hydraulic surcharge
DE500138C (en) Process for the production of dolomite cements
DE545182C (en) Process for the production of a refractory mortar