DE476849C - Process for the production of a colored Portland cement - Google Patents

Process for the production of a colored Portland cement

Info

Publication number
DE476849C
DE476849C DEA49893D DEA0049893D DE476849C DE 476849 C DE476849 C DE 476849C DE A49893 D DEA49893 D DE A49893D DE A0049893 D DEA0049893 D DE A0049893D DE 476849 C DE476849 C DE 476849C
Authority
DE
Germany
Prior art keywords
portland cement
colored
production
cement
colored portland
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
DEA49893D
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.)
AMME LUTHER WERKE BRAUNSCHWEIG
Original Assignee
AMME LUTHER WERKE BRAUNSCHWEIG
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 AMME LUTHER WERKE BRAUNSCHWEIG filed Critical AMME LUTHER WERKE BRAUNSCHWEIG
Priority to DEA49893D priority Critical patent/DE476849C/en
Application granted granted Critical
Publication of DE476849C publication Critical patent/DE476849C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/02Portland cement

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  • 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

Verfahren zur Herstellung eines farbigen Portlandzementes Es ist bekannt, durch das Zumischen von Metalloxyden oder Metallsalzen zu weißem Portlandzement ergebenden Rohmehlen einen farbigen Zement herzustellen.Process for the production of a colored Portland cement It is known by adding metal oxides or metal salts to white Portland cement to produce a colored cement from the resulting raw meals.

Gefärbte, z. B. eisenhaltige Rohmehle können nach diesem Verfahren nicht in Farbzemente übergeführt werden, da die stumpfgraue Farbe des gewöhnlichen Portlandzementes einen ausgesprochenenFarbton nicht aufkommen läßt.Colored, e.g. B. iron-containing raw meals can by this method not be converted into colored cement, as the dull gray color of the ordinary Portland cement does not give a pronounced shade of color.

Dieser :N-achteil wird gemäß der Erfindung dadurch behoben, daß man den gefärbten Rohmehlen außer den färbenden Metallverbindungen, "vie Chromoxyd, Nickeloxyd, Kobaltoxyd, Kupferoxyd u. dgl., noch solche Stoffe (Phosphate, Borate, Metallhalogenverbindungen) zusetzt, die beim- Erhitzen finit den färbenden Metallverbindungen farbige Schmelzen ergeben.This: N disadvantage is eliminated according to the invention in that one the colored raw meal except for the coloring metal compounds, "vie chromium oxide, Nickel oxide, cobalt oxide, copper oxide and the like, nor such substances (phosphates, borates, Metal halogen compounds), which when heated finite the coloring metal compounds colored melts result.

Beispielsweise vermischt man Zeinentrohmehl mit Flußspat, Borax und Chromoxyd und verarbeitet dies Gemisch in bekannter Weise zu Zement. Zweckmäßig ist es, diesem Rohmehl vor der Sinterung noch einen reduzierend wirkenden Stoff, z. B. Koks, beizumischen. Auf diese Weise erhält man einen rein grünen Zement, der den Farbstoff nicht mechanisch beigemengt enthält, sondern der selbst als ein einheitlicher, beständiger und fester Farbstoff anzusprechen ist.For example, raw zein meal is mixed with fluorspar, borax and Chromium oxide and processes this mixture into cement in a known manner. Appropriate is to add a reducing substance to this raw meal before sintering, z. B. coke to be mixed. In this way you get a pure green cement that the dye does not contain mechanically added, but the itself as a uniform, stable and solid dye is to be addressed.

Die die Schmelzen färbenden Metallverbindungen können natürlich auch von vornherein in dem Rohmehl enthalten sein.The metal compounds coloring the melts can of course also be contained in the raw meal from the outset.

Enthalten die Rohstoffe Eisenoxyde, so können diese, namentlich wenn sie in größeren Mengen vorhanden sind, durch reduzierendes Brennen zu Metall reduziert und dann ausgeschieden werden.If the raw materials contain iron oxides, these can, especially if they are present in larger quantities, reduced to metal by reducing firing and then be eliminated.

Es ist zweckmäßig, die den Zementrohstoffen zugesetzten und beim Erhitzen Schmelzen ergebenden Stoffe in solchen Mengen anzuwenden, daß sie außerdem auch noch den Sinter- bzw. Schmelzpunkt der Klinker in bekannter Weise herabdrücken.It is useful to add the cement raw materials and when heated Melting substances to be used in such quantities that they also or lower the sintering or melting point of the clinker in a known manner.

Claims (1)

PATFNTANSPRUCI3: Verfahren zur Herstellung eines farbi-7eii Portlandzementes, dadurch gekennzeichnet, daß gefärbte, z. B. eisenhaltige Rohstoffe und Stoffe, die beim Erhitzen Schmelzen ergeben, sowie färbende Metalloxyde oder Metallsalze gemischt und gebrannt werden.PATFNTANSPRUCI3: Process for the production of a color-7eii Portland cement, characterized in that colored, z. B. ferrous raw materials and substances that when heated melted, as well as coloring metal oxides or metal salts mixed and be burned.
DEA49893D 1927-01-28 1927-01-28 Process for the production of a colored Portland cement Expired DE476849C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA49893D DE476849C (en) 1927-01-28 1927-01-28 Process for the production of a colored Portland cement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA49893D DE476849C (en) 1927-01-28 1927-01-28 Process for the production of a colored Portland cement

Publications (1)

Publication Number Publication Date
DE476849C true DE476849C (en) 1929-05-25

Family

ID=6937120

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA49893D Expired DE476849C (en) 1927-01-28 1927-01-28 Process for the production of a colored Portland cement

Country Status (1)

Country Link
DE (1) DE476849C (en)

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