DE399446C - Process for the production of lightly burned cement - Google Patents
Process for the production of lightly burned cementInfo
- Publication number
- DE399446C DE399446C DEK86452D DEK0086452D DE399446C DE 399446 C DE399446 C DE 399446C DE K86452 D DEK86452 D DE K86452D DE K0086452 D DEK0086452 D DE K0086452D DE 399446 C DE399446 C DE 399446C
- Authority
- DE
- Germany
- Prior art keywords
- cement
- production
- lightly burned
- lime
- 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
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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
Verfahren zur Herstellung von schwach gebranntem Zement. Es ist bekannt, daß viele Portlandzementrohmischungen, auch wenn sie nur schwach gebrannt werden, Mörtelstoffe liefern, die gut abbinden, hinreichend raumbeständig sind und befriedigende Erhärtung zeigen. Derartige Mörtelstoffe, die teils den Romanzementen nahestehen, teils als PortlandzeLtnentleichtbrand bezeichnet werden, haben aber den Fehler, daß sie schnell Wasser- und Kohlensäure aus der Luft aufnehmen, daher wenig lagerbeständig sind und bei längerer Lagerung erhebliche Güteeinbuße erfahren.Process for the production of lightly burned cement. It is known, that many Portland cement raw mixes, even if they are only lightly fired, Provide mortars that set well, are sufficiently stable and satisfactory Show hardening. Such mortars, some of which are close to the novel cements, are sometimes referred to as Portland cell light fire, but have the fault that they quickly absorb water and carbon dioxide from the air, therefore not very stable in storage are and experience considerable loss of quality during prolonged storage.
Der Erfinder hat erkannt, daß man aus Rohiniechungen kalk- und tonhaltiger Stoffe, deren Kalkgehalt etwa zwischen der Kalkhöhe des Romanzementes und der des Portlandzementes liegt, bei niederen Brenngraden, die nur wenig über der zur Austreibung der Kohlensäure erforderlichen Temperatur von goo bis iooo° liegen, vorzügliche Zemente herstellen kann, wenn span der Rohmischung einige Prozente feingemahlenen Flußspates zusetzt.The inventor has recognized that raw smells are more calcareous and clayey Substances whose lime content is roughly between the lime level of the Roman cement and that of the Portland cement is, at low degrees of burning, only slightly above that for expulsion The temperature required for the carbonic acid should be from goo to 100o °, excellent Cements can be produced if the raw mix is finely ground a few percent Fluorspar adds.
An und für sich ist die Verwendung von Flußspat zum Zwecke der Erleichterung von Brenn- und S.chmelzprozesisen natürlich bekannt. Tatsächlich hat man Flußspatzusätze auch bereits in der Portlandzementindustrie verwendet. Solche Zusätze sind aber immer nur gemacht worden, uni die an und für sich für notwendig gehaltene Sinterung der Portlandzennentrohm@asse zu erreichen. Bei dem vorliegenden neuen Verfahren tritt eine S.interung der Klinkermiasse, wie sie beim Fo:rtlandzernentbrennen notwendig ist, nicht ein. Die gebrannte Masse zeigt vielmehr auch nach dem Brennen die typische gelbe bis gelblichgraue Farbe des Portlandzementleichtbrandes und unterscheidet sich vom gewöhnlichen Portlandzementleichtbrand nur durch.eine Verringerung des Porenraumes und eine damit verbundene Verfestigung, welche durch den leicht schmelzbaren Flußispat bewirkt wird und welche die gute Lagerbeständigkeit des gebrannten und gemahlenen Gutes zur Folge hat.In and of itself, the use of fluorspar is for the purpose of relief of course known from firing and smelting processes. In fact, one has river sparrow additives also already used in the portland cement industry. Such additives are, however only ever been made, uni the sintering that was considered necessary in and of itself to reach the Portlandzennentrohm @ asse. In the present new process If the clinker molasses are sintered, as is necessary in the case of regional firing is not a. Rather, the fired mass is typical even after firing yellow to yellowish-gray color of the light Portland cement fire and differentiates differs from the ordinary light Portland cement fire only by reducing the Pore space and an associated solidification, which is caused by the easily meltable Flußispat is effected and which the good shelf life of the fired and ground good.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK86452D DE399446C (en) | 1923-07-05 | 1923-07-05 | Process for the production of lightly burned cement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK86452D DE399446C (en) | 1923-07-05 | 1923-07-05 | Process for the production of lightly burned cement |
Publications (1)
Publication Number | Publication Date |
---|---|
DE399446C true DE399446C (en) | 1924-07-22 |
Family
ID=7235669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK86452D Expired DE399446C (en) | 1923-07-05 | 1923-07-05 | Process for the production of lightly burned cement |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE399446C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2566388A1 (en) * | 1984-06-25 | 1985-12-27 | Champagnole Ciments | IMPROVEMENTS IN THE MANUFACTURE OF HYDRAULIC BINDERS AND PRODUCTS THUS OBTAINED |
-
1923
- 1923-07-05 DE DEK86452D patent/DE399446C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2566388A1 (en) * | 1984-06-25 | 1985-12-27 | Champagnole Ciments | IMPROVEMENTS IN THE MANUFACTURE OF HYDRAULIC BINDERS AND PRODUCTS THUS OBTAINED |
EP0167465A1 (en) * | 1984-06-25 | 1986-01-08 | Société dite : CIMENTS DE CHAMPAGNOLE (société anonyme) | Production of hydraulic binders |
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