DE173120C - - Google Patents
Info
- Publication number
- DE173120C DE173120C DENDAT173120D DE173120DA DE173120C DE 173120 C DE173120 C DE 173120C DE NDAT173120 D DENDAT173120 D DE NDAT173120D DE 173120D A DE173120D A DE 173120DA DE 173120 C DE173120 C DE 173120C
- Authority
- DE
- Germany
- Prior art keywords
- magnesium
- cement
- water
- magnesia
- molecules
- 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
- CSNNHWWHGAXBCP-UHFFFAOYSA-L mgso4 Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 17
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 16
- 239000004568 cement Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 8
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 8
- WDIHJSXYQDMJHN-UHFFFAOYSA-L Barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 2
- 229910001626 barium chloride Inorganic materials 0.000 claims description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L MgCl2 Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 229910001629 magnesium chloride Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L Barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- IQYKECCCHDLEPX-UHFFFAOYSA-N chloro hypochlorite;magnesium Chemical compound [Mg].ClOCl IQYKECCCHDLEPX-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002969 artificial stone Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FKLRBKPRLBWRKK-UHFFFAOYSA-N magnesium;oxygen(2-);hydrate Chemical compound O.[O-2].[Mg+2] FKLRBKPRLBWRKK-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
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
- C04B9/00—Magnesium cements or similar cements
- C04B9/04—Magnesium cements containing sulfates, nitrates, phosphates or fluorides
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
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE 60 ft. GRUPPECLASS 60 ft. GROUP
Dr. ERNST BIDTEL,Dr. ERNST BIDTEL,
Die vorliegende Erfindung bezieht sich auf ein Verfahren zur Herstellung von Magnesiazement. The present invention relates to a method for producing magnesia cement.
Die bisher hergestellten Magnesiazemente (Sorelzemente) bestanden in der Regel aus Magnesia, welche mit einem geeigneten Verdünnungsmittel, wie Sand usw., gemischt wurde und zu der an Ort - und Stelle der Verwendung eine wässerige Lösung vonThe previously produced magnesia cements (Sorel cements) usually failed Magnesia mixed with a suitable diluent such as sand, etc. was and to be used on the spot an aqueous solution of
ίο Magnesiumchlorid zugesetzt wurde. Das Erhärten beruht auf der Bildung von Magnesiumoxychlorid. ίο Magnesium chloride has been added. The hardening is based on the formation of magnesium oxychloride.
Um den Transport der verhältnismäßig großen Menge von Wasser in der Magriesiumchloridlösung zu umgehen, hat Kraner vorgeschlagen (D. R. P. 143933), Magnesiumoxyd mit Magnesiumsulfat und Baryumchlorid zu mischen und dieser Zementmischung an Ort und Stelle Wasser zuzusetzen. Es bildet sich dabei zuerst durch doppelte Umsetzung Magnesiumchlorid und Baryumsulfat; das Magnesiumchlorid wirkt in bekannter Weise auf die Magnesia ein, und bildet Magnesiumoxychlorid. About the transportation of the relatively large amount of water in the magnesium chloride solution to circumvent, suggested Kraner (D. R. P. 143933), magnesium oxide Mix with magnesium sulfate and barium chloride and put this cement mixture in place and add water. It is formed first through double implementation Magnesium chloride and barium sulfate; the magnesium chloride works in a known way on the magnesia, and forms magnesium oxychloride.
Es hat sich nun herausgestellt, daß diese Zementmischungen sehr, wenig haltbar sind und infolgedessen keinen langdauernden Transport oder längere Lagerung vertragen, -1 ohne stark an Wert zu verlieren. Das Magnesiumsulfat, Bittersalz, die gewöhnliche Handelsware, enthält 7 Moleküle Wasser (die Formel der Verbindung ist also Mg SO1-\- 7H2O) und ist durchaus nicht luftbeständig, sondern verwittert, indem es · bei mittlerer Temperatur und besonders leicht im Zustande feiner Verteilung Wasser verliert. Dieses im Zementgemisch während des Lagerns oder des Transportes austretende Wasser wird natürlich von dem beigemengten Magnesiumoxyd unter Bildung von Magnesiumoxydhydrat gebunden, wodurch die Bindefähigkeit des Zementgemisches beeinträchtigt wird und nach einiger Zeit unter Umständen gänzlich verloren gehen kann.It has now been found that these cement mixes are very, poorly durable and consequently cannot withstand long transport or prolonged storage - 1 without losing much of their value. Magnesium sulphate, Epsom salt, the common commodity, contains 7 molecules of water (the formula of the compound is therefore Mg SO 1 - 7H 2 O) and is by no means air-resistant, but weathers because it is in a particularly light state at medium temperature fine distribution loses water. This water escaping in the cement mixture during storage or transport is of course bound by the added magnesium oxide to form magnesium oxide hydrate, which impairs the binding capacity of the cement mixture and can be completely lost after some time.
Versuche mit wasserfreiem Magnesiumsulfat haben gleichfalls ein ungünstiges Resultat ergeben, insofern nämlich, als das wasserfreie Magnesiumsulfat eine sehr hygroskopische Substanz ist und durch diese Eigenschaft schwerwiegende Nachteile beim Lagern und Transport des damit hergestellten Zementgemisches verursacht werden. Infolge der durch Wasseraufnahme bedingten Volumenvergrößerung der Zementsäcke oder Fässer wurden nämlich diese Behälter leicht zersprengt. Experiments with anhydrous magnesium sulfate also have an unfavorable result to the extent that the anhydrous magnesium sulphate is a very hygroscopic one Substance is, and due to this property, serious disadvantages when storing and transporting the cement mixture produced with it caused. As a result of the increase in volume caused by water absorption the cement sacks or barrels, in fact, these containers were easily broken.
Die vorliegende Erfindung besteht nun darin, daß zu der bekannten Zementmischung ein Magnesiumsulfat verwendet wird, welches die oben erwähnten Fehler des Zementgemisches vermeidet und welches infolgedessen zur Herstellung eines vollkommen dauerhaften, versandfähigen Produktes dienen kann. Dieses Magnesiumsulfat ist ein solches mitThe present invention now consists in that of the known cement mixture a magnesium sulphate is used, which eliminates the above-mentioned defects of the cement mix avoids and which consequently leads to the production of a completely permanent, can serve as a dispatchable product. This magnesium sulfate is one of those with
6 Molekülen Wasser, Mg SO1 + 6H2 0, welches vollkommen luftbeständig ist und z. B. dadurch erhalten wird, daß das gewöhnliche Sulfat mit 7 Molekülen Wasser einige Zeitlang auf eine Temperatur von 45 bis 6o° C. erhitzt wird.6 molecules of water, Mg SO 1 + 6H 2 0, which is completely air-resistant and z. B. is obtained by heating the ordinary sulfate with 7 molecules of water to a temperature of 45 to 60 ° C. for some time.
Die Herstellung und Verwendung des Zementes erfolgt in bekannter Weise.The cement is produced and used in a known manner.
Der Zement kann in üblicher Weise zur Herstellung von Kunststeinen, feuersicheren Platten, Gefäßen, mörtelartigen Bindemitteln usw. benutzt werden.The cement can be used in the usual way for the production of artificial stone, fire-proof Plates, vessels, mortar-like binders, etc. are used.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE173120C true DE173120C (en) | 1900-01-01 |
Family
ID=437957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT173120D Expired DE173120C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE173120C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3679108A (en) * | 1969-07-17 | 1972-07-25 | Nat Res Dev | Carrier devices for shoulder-strap support on the back |
| FR2622570A1 (en) * | 1987-11-02 | 1989-05-05 | Scient Tech Batimen Centre | MAGNESIAN CEMENTS COMPRISING A PARTIALLY HYDRATED MAGNESIUM SALT, AND A VERY REACTIVE MAGNESIA, MAGNETIC BINDERS WITH ACCELERATED AND IMPROVED WATER TENSION OBTAINED FROM SUCH CEMENTS, AND MATERIAL OBTAINED WITH SUCH A MAGNESIAN, NON-EXPANDED OR EXPANDED BINDER |
| BE1002728A5 (en) * | 1989-01-05 | 1991-05-21 | Ct Scient Tech Batiment Cstb | Magnesian cements comprising a partially dehydrated magnesium salt and ahighly reactive magnesia, accelerated setting and enhanced water resistancemagnesian binders obtained from such cements and substance obtained withsuch a magnesian binder, non-expanded or expanded. |
| GR890100077A (en) * | 1989-02-07 | 1991-06-28 | Centre Scient Tech Batiment | Magnesium cements comprising a partially deshydrated magnesium salt and a very reactive magnesia magnesium binders with accelerated getting and improved water resistance obtained from such cements and non expanded or expanded material obtained with such. |
-
0
- DE DENDAT173120D patent/DE173120C/de not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3679108A (en) * | 1969-07-17 | 1972-07-25 | Nat Res Dev | Carrier devices for shoulder-strap support on the back |
| FR2622570A1 (en) * | 1987-11-02 | 1989-05-05 | Scient Tech Batimen Centre | MAGNESIAN CEMENTS COMPRISING A PARTIALLY HYDRATED MAGNESIUM SALT, AND A VERY REACTIVE MAGNESIA, MAGNETIC BINDERS WITH ACCELERATED AND IMPROVED WATER TENSION OBTAINED FROM SUCH CEMENTS, AND MATERIAL OBTAINED WITH SUCH A MAGNESIAN, NON-EXPANDED OR EXPANDED BINDER |
| EP0378010A1 (en) * | 1987-11-02 | 1990-07-18 | Centre Scientifique Et Technique Du Batiment | Magnesium cements and binders with accelerated setting and with enhanced water requirement obtained from such cements, and a material obtained from such a binder |
| BE1002728A5 (en) * | 1989-01-05 | 1991-05-21 | Ct Scient Tech Batiment Cstb | Magnesian cements comprising a partially dehydrated magnesium salt and ahighly reactive magnesia, accelerated setting and enhanced water resistancemagnesian binders obtained from such cements and substance obtained withsuch a magnesian binder, non-expanded or expanded. |
| GR890100077A (en) * | 1989-02-07 | 1991-06-28 | Centre Scient Tech Batiment | Magnesium cements comprising a partially deshydrated magnesium salt and a very reactive magnesia magnesium binders with accelerated getting and improved water resistance obtained from such cements and non expanded or expanded material obtained with such. |
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