DE476849C - Process for the production of a colored Portland cement - Google Patents
Process for the production of a colored Portland cementInfo
- 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
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
- C04B7/02—Portland cement
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
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)
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) |
-
1927
- 1927-01-28 DE DEA49893D patent/DE476849C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE476849C (en) | Process for the production of a colored Portland cement | |
DE821719C (en) | Process for de-ironing chrome ores and its application for the production of chrome and chrome alloys | |
DE664943C (en) | Process for the manufacture of refractory products | |
AT133742B (en) | Process for the production of white cement from colored, e.g. B. ferrous raw materials. | |
DE430387C (en) | Process for the production of an easily meltable and pourable, porcelain-like mass | |
DE659336C (en) | ||
DE1596754B2 (en) | METHOD OF MANUFACTURING AN AMBER-COLORED GLASS WITH PREDESTINED COLOR TYPE USING A BURN FURNACE SLACK | |
DE628487C (en) | Process for the production of enamelled iron objects | |
DE531416C (en) | Process for the production of white cement from colored, e.g. ferrous raw materials | |
DE511945C (en) | Process for the production of morganita-like pink spinels | |
DE923955C (en) | Refractory material containing chromium oxide, its use and manufacture | |
DE595347C (en) | Process for the production of Portland cement from ferrous raw materials with simultaneous extraction of iron | |
DE130127C (en) | ||
DE513273C (en) | Mechanical combining of metals and non-metallic additives | |
DE477270C (en) | Process for the production of cement rich in alumina or iron oxide or baryta cement in addition to sulphurous acid | |
DE368491C (en) | Wood impregnation agent | |
DE602244C (en) | Process for enamelling cast iron | |
DE650749C (en) | Process for the production of a replacement gold for burning into products of the ceramic enamel and glass industry | |
DE753119C (en) | Process for the production of sodium silicate from soda ash | |
DE542862C (en) | Process for the production of easily sintering ceramic masses from clay (kaolin), sand or flux | |
DE610091C (en) | Process for the pretreatment of centrifugal cast pipes cast in chill molds for the application of protective layers, such as paint or other coatings | |
DE660245C (en) | Manufacture of pigments for rust protection and wood preservation | |
DE742800C (en) | Process for the production of liquid iron or iron alloys by reduction in a rotary furnace | |
DE178521C (en) | ||
DE818143C (en) | Process to prevent the formation of fish scales and specks in the base enamel |