DE511513C - Process for reducing the water content of lime or cement raw sludge - Google Patents
Process for reducing the water content of lime or cement raw sludgeInfo
- Publication number
- DE511513C DE511513C DEV25821D DEV0025821D DE511513C DE 511513 C DE511513 C DE 511513C DE V25821 D DEV25821 D DE V25821D DE V0025821 D DEV0025821 D DE V0025821D DE 511513 C DE511513 C DE 511513C
- Authority
- DE
- Germany
- Prior art keywords
- lime
- water content
- water
- cement raw
- reducing
- 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
-
- 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/104—Ingredients added before or during the burning process
-
- 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
Description
Verfahren zur Herabminderung des Wassergehalts von Kalk- oder Zementrobschlamm Die Ersparnis von Wasser bei der Herstellung von Kalk- oder Zementrohschlamm ist ein Problem, an dem die interessierte Fachwelt schon jahrelang eifrig arbeitet, ohne bis heute eine befriedigende Lösung gefunden zu haben.Process for reducing the water content of lime or cement sludge The saving of water in the production of lime or cement raw sludge is a problem on which the interested professional world has been working diligently for years, without having found a satisfactory solution to date.
Es ist zwar bekannt, die notwendige Fließbarkeit von Kalk- oder Zementrohschlarnin durch Zusatz mancher Elektrolyte, wie beispielsweiseAlkalien, Soda, Pottasche, Ammonialz, Gips, Wasserglas, Aluminium- oder Eisenehlorid, Zucker, Seifen usw., oder aber mancherKolloide, wie beispielsweiseDextrin, Tannin usw., zu erreichen unter merklicher Ersparnis von Wasser; diese Zusätze sind aber je nach der Beschaffenheit der Kalk-oder Zementrobstoffe nur vereinzelt voll wirksam, meist jedoch nur mangelhaft und sehr oft sogar überhaupt nicht, oder aber sie sind infolge der außergewöhnlich großen Mengen, die für derartige Schlämme in Frage kommen, unwirtschaftlich.It is known to improve the flowability of lime or cement raw slarnine by adding some electrolytes, such as alkalis, soda, potash, ammonium ore, gypsum, water glass, aluminum or iron chloride, sugar, soaps, etc., or some colloids such as dextrin, tannin etc., to be achieved with a noticeable saving of water; However, depending on the nature of the lime or cement raw materials, these additives are only occasionally fully effective, but mostly only inadequately and very often not at all, or they are uneconomical due to the extraordinarily large amounts that are possible for such sludges.
Erfinder hat jedoch erkannt, daß insbesondere alle solche Abfallprodukte oder industrielle oder natürlicheAbwässerundfaulende Wässer, die tierische oder pflanzliche Zersetzungs-, Fäulnis- oder Gärungsstoffe enthalten, vorzüglich sowohl in technischer als auch in wirtschaftlicher Hinsicht geeignet sind, die gewünschte Fließbarkeit von Kalk-oder Zementrohschlamm bei merklicher Ersparnis an Wasser zu erzielen. Solche Ab- fallstoffe oder Abwässer, die tierische oder pflanzliche Abbauprodukte enthalten, sind beispielsweise: Jauche, städtische Abwässer, Abwässer von Brauereien, Zuckerfabriken, Gerbereien, Zellstoffabriken, Gaswerken, Kokereien u. dgl. Auch natürlich faulendes Wasser, Sumpf- oder Moorwässer, ist für diesen Zweck vorzüglich geeignet. Selbstverständlich können diese Wässer zwecks Transportverbilligung vor der Verwendung auch eingedickt werden durch natürliche oder künstliche Verdamp#fung. Die Ausführungsweise des Verfahrens besteht darin, daß die betreffenden Lösungen oder Stoffe in ganz geringer und eben ausreichender Menge auf beliebige Art dem Wasser oder dem Kalk-bzw. Zementrohstoff vor, bei oder nach der Vermahlung oder bei der Vermischung mit Wasser zugefügt werden.However, the inventor has recognized that in particular all such waste products or industrial or natural sewage and putrefactive waters, which contain animal or vegetable decomposition, putrefactive or fermentation substances, are particularly suitable both technically and economically, contributing to the desired flowability of lime or cement raw sludge to achieve noticeable savings in water. Such waste materials or wastewater that contain animal or vegetable degradation products are, for example: manure, urban wastewater, wastewater from breweries, sugar factories, tanneries, pulp mills, gas works, coking plants and the like excellently suited for this purpose. Of course, these waters can also be thickened by natural or artificial evaporation in order to reduce transport costs. The method of implementation of the process consists in adding the solutions or substances in question in a very small and just sufficient amount to the water or the lime or. Cement raw material can be added before, during or after grinding or when mixing with water.
Als Beispiel für die Wirkung der obengenannten Abfallstoffe sei hier angeführt: Ein Zementrohschlamm, der normalerweise den für die Verarbeitung notwendigen Grad der Fließbarkeit bei einem Wassergehalt von 41,5 0/" aufwies, wurde durch Verdampfen eingedickt und erhielt sodann so lange ein mit Zellstoffablauge bis zur gerade bräunlichen Färbung versetztes Wasser zugefügt, bis wieder die gleiche Fließbarkeit erreicht war, die ohne den Abfallstoff mit 41,5 0/" Wasser zu erzielen war. Der Wassergehalt betrug jetzt nur noch 36,5 ll/.. Durch den Zusatz des Abfallstoffes zu dem Anmachewasser des Zementrohschlammes ist also eine Ersparnis an Wasser erzielt worden von 12 0/".As an example for the effect of the above-mentioned waste materials: A cement raw sludge, which normally had the necessary degree of flowability for processing with a water content of 41.5%, was thickened by evaporation and was then given a pulp waste liquor up to water, which was just brownish in color, was added until the same flowability was achieved again as that which could be achieved without the waste material with 41.5 Ω / ″ of water. The water content was now only 36.5 l / ". By adding the waste material to the mixing water of the raw cement sludge, a saving of water of 12% was achieved.
In einem anderen Falle hätte ein Zementrohschlamni im normalen Zustand eine Fließbarkeit, die am Viskosimeter eine Auslaufzeit von 2 Minuten io Sekunden bedingte. Nach Abdämpfen des Wassers und Ersatz dieses durch ein Wasser, das mittels jauche gerade bräunlich gefärbt war, ergab sich bei gleichem Wassergehalt eine Auslaufzeit von nur i Minute 5 Sekunden, also bei gleichem Wassergehalt war eine Erhöhung der Fließbarkeit eingetreten um ioo 0/0. In another case, a raw cement slurry would have a flowability in the normal state that would require a flow time of 2 minutes 10 seconds on the viscometer. After evaporating the water and replacing it with water that was just brownish in color with the help of manure, there was an outflow time of only 1 minute 5 seconds with the same water content, i.e. with the same water content there was an increase in flowability of 100% .
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV25821D DE511513C (en) | 1929-10-03 | 1929-10-03 | Process for reducing the water content of lime or cement raw sludge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV25821D DE511513C (en) | 1929-10-03 | 1929-10-03 | Process for reducing the water content of lime or cement raw sludge |
Publications (1)
Publication Number | Publication Date |
---|---|
DE511513C true DE511513C (en) | 1930-10-30 |
Family
ID=7582214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEV25821D Expired DE511513C (en) | 1929-10-03 | 1929-10-03 | Process for reducing the water content of lime or cement raw sludge |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE511513C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1162253B (en) * | 1958-04-05 | 1964-01-30 | Hoechst Ag | Plasticized concrete mortar |
FR2541991A1 (en) * | 1983-03-01 | 1984-09-07 | Abc Bio Ind | PROTEIN-BASED ADJUVANT FOR HYDRAULIC BINDERS, MORTARS AND CONCRETE, AND ITS USE IN THE CONSTRUCTION FIELD |
-
1929
- 1929-10-03 DE DEV25821D patent/DE511513C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1162253B (en) * | 1958-04-05 | 1964-01-30 | Hoechst Ag | Plasticized concrete mortar |
FR2541991A1 (en) * | 1983-03-01 | 1984-09-07 | Abc Bio Ind | PROTEIN-BASED ADJUVANT FOR HYDRAULIC BINDERS, MORTARS AND CONCRETE, AND ITS USE IN THE CONSTRUCTION FIELD |
EP0171480A1 (en) * | 1983-03-01 | 1986-02-19 | Abc Bio-Industries, S.A. | Adjuvant of proteinic nature for hydraulic binders, mortars and concretes and its utilisation in the construction field |
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