DE524774C - Process for the production of artificial slate - Google Patents
Process for the production of artificial slateInfo
- Publication number
- DE524774C DE524774C DE1927524774D DE524774DD DE524774C DE 524774 C DE524774 C DE 524774C DE 1927524774 D DE1927524774 D DE 1927524774D DE 524774D D DE524774D D DE 524774DD DE 524774 C DE524774 C DE 524774C
- Authority
- DE
- Germany
- Prior art keywords
- slate
- parts
- production
- mixture
- artificial
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
Verfahren zur Herstellung von künstlichem Schiefer Den Gegenstand der Erfindung bildet ein Verfahren zur Herstellung von künstlichem Schiefer, insbesondere für Schreibtafeln. Die bekannten Schreibtafeln dieser Art sind in der Herstellung noch sehr teuer und erfordern zeitraubende Nacharbeit, um eine zur Aufnahme der Schrift geeignete Oberfläche zu erzielen; beispielsweise ist ein Anstrich (Beschieferung) erforderlich, wenn künstlicher Deckschiefer zu Schreibtafeln verarbeitet werden soll.Method of making artificial slate The object of the invention forms a method for the production of artificial slate, in particular for writing boards. The known writing boards of this type are being manufactured Still very expensive and require time consuming rework in order to accommodate the To achieve a suitable surface for writing; for example a coating (slate) required when artificial cover slate is processed into writing boards target.
Das den Gegenstand der Erfindung bildende Verfahren zielt darauf ab, aus Schieferpulver Schreibtafeln herzustellen, die ohne jede Nachbehandlung beschriftungsfähig sind und die alle jene Eigenschaften haben, die bei Schreibtafeln aus natürlichem Schiefer gefordert werden. Zu diesem Zwecke werden der Masse aus Schieferpulver und Bindemittel besondere Stoffe zugesetzt, die der Oberfläche der fertigen Tafel die betreffenden Eigenschaften erteilen und beim Pressen in der Form der Tafel die dichte Oberfläche verleihen.The method forming the subject of the invention aims to make writing boards from slate powder that can be written on without any subsequent treatment and which all have the same properties as natural writing boards Slate are required. For this purpose, the mass is made from slate powder and binders special substances are added to the surface of the finished board give the properties in question and when pressed in the shape of the panel the give a dense surface.
Das Verfahren besteht darin, daß man eine Mischung aus 40 Raumteilen gutem Zement, 9o bis Zoo Raumteilen Schiefermehl als Füllstoff und einem Zusatz von 7 bis $1/2 Raumteilen einer Verbindung von Kaliumsilikat (Kaliwasserglas) mit einem oder mehreren Metallsalzen, wie Calciumnitrat, Bariumnitrat, Blutlaugensalz, herstellt sowie die etwa noch erforderlichen Farbstoffe beigibt. Das Verhältnis der Metallsalze zum Kaliumsilikat beträgt etwa 1/2 bis 3:1oo, d. h. auf Zoo Raumteile Kaliumsilikat, wenn dieses in Stücken oder Pulver verwendet wird, 1l/2 bis 2 Raumteile Calcium- oder Bariumnitrat und 1/2 bis 1 Raumteil Blutlaugensalz oder, wenn Wasserglaslösung von 3o bis 33' B6 benutzt wird, 2 bis 3 Raumteile Nitrat und 1 bis 1l/2 Raumteile Blutlaugensalz.The process consists of a mixture of 40 parts by volume of good cement, 9o to Zoo parts of slate flour as a filler and an addition of 7 to $ 1/2 parts by volume of a compound of potassium silicate (potassium silicate) with one or more metal salts, such as calcium nitrate, barium nitrate, Blood liquor salt, as well as adding any colorants that may still be required. The ratio of the metal salts to the potassium silicate is about 1/2 to 3: 100, ie on Zoo parts of potassium silicate, if this is used in pieces or powder, 1l / 2 to 2 parts by volume calcium or barium nitrate and 1/2 to 1 part by volume blood liquor salt or If waterglass solution from 3o to 33 ' B6 is used, 2 to 3 parts by volume of nitrate and 1 to 1l / 2 parts by volume of blood liquor salt.
Wenn das Salzgemisch in trockenem Zustande zugesetzt wird, wird es zweckmäßig mit den übrigen Substanzen gemahlen und gemischt und alsdann mit einer entsprechenden Menge Wasser, in welchem ein bekanntes fetthaltiges Präparat, z. B. Kaliseife (Schmierseife) oder ein anderes bekanntes Mörteldichtungsmittel, wie die unter dem Namen Ceresit handelsübliche Masse o. dgl., im' Verhältnis von 3/4 bis 1 Prozent zur Trockenmischung gelöst oder emulgiert ist, zu einer erdfeuchten Masse geknetet. Wird das Kaliumsilikat in Lösung verwendet, so verdünnt man es mit einem Teil des Anmachwassers und stellt mit einem anderen Teil aus den Salzen io-bis 12prozentige Lösungen her, die man den Hauptsubstanzen zusetzt und die Masse, wie erwähnt, bearbeitet und schließlich unter hohem Druck in die gewünschten Formen preßt.If the salt mixture is added in a dry state, it will expediently ground and mixed with the other substances and then with one corresponding amount of water in which a known fatty preparation, e.g. B. Potash soap (soft soap) or another known mortar sealant, such as the mass commercially available under the name Ceresit or the like, in a ratio of 3/4 until 1 percent is dissolved or emulsified to the dry mix, to an earth-moist Kneaded mass. If the potassium silicate is used in solution, it is diluted with part of the mixing water and makes up from the salts io-bis with another part 12 percent solutions that are added to the main substances and the mass, such as mentioned, processed and finally under high pressure into the desired shapes presses.
Damit das Silikat zur richtigen Einwirkung kommen kann, ist es erforderlich, daß die gepreßten Platten nach kurzer Trocknung längere Zeit in feuchten Räumen gelagert werden.In order for the silicate to have the correct effect, it is necessary to that the pressed boards after a short drying time in damp rooms be stored.
Die wesentlichen Fortschritte gegenüber dem Bekannten liegen darin, daß durch die Verwendung des Kaliumsilikates in Verbindung mit den Metallsalzen und unter Einhaltung der zuvor erklärten Herstellungsmethode dünne Schreibtafeln mit glatter dichter Oberfläche und von hoher Spannkraft und Druckfestigkeit erzielt werden, und zwar unter Verwendung des natürlichen- Schiefers in Puleerform, der einen billigen Abfallstoff darstellt. Bei Anwendung des vorliegenden Verfahrens sind die Kosten für die Herstellung erheblich geringer als für Naturschiefer und auch für künstlichen Schiefer bekannter Art.The main advances compared to the familiar lie in that by using the potassium silicate in conjunction with the metal salts and in compliance with the manufacturing method explained above, thin writing boards with a smooth, dense surface and of high resilience and compressive strength can be achieved using natural slate in Puleer form, which is a cheap waste material. When using the present procedure the cost of manufacturing is significantly lower than for natural slate and also known for artificial slate.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE524774T | 1927-12-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE524774C true DE524774C (en) | 1931-05-12 |
Family
ID=6552397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1927524774D Expired DE524774C (en) | 1927-12-06 | 1927-12-06 | Process for the production of artificial slate |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE524774C (en) |
-
1927
- 1927-12-06 DE DE1927524774D patent/DE524774C/en not_active Expired
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