AT38530B - Process for the production of lightfast lithopone. - Google Patents

Process for the production of lightfast lithopone.

Info

Publication number
AT38530B
AT38530B AT38530DA AT38530B AT 38530 B AT38530 B AT 38530B AT 38530D A AT38530D A AT 38530DA AT 38530 B AT38530 B AT 38530B
Authority
AT
Austria
Prior art keywords
quenching
burning
lightfast
lithopone
production
Prior art date
Application number
Other languages
German (de)
Inventor
Wilhelm Dr Ostwald
Eberhard Dr Brauer
Original Assignee
Wilhelm Dr Ostwald
Eberhard Dr Brauer
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE1905202709D external-priority patent/DE202709C/de
Application filed by Wilhelm Dr Ostwald, Eberhard Dr Brauer filed Critical Wilhelm Dr Ostwald
Application granted granted Critical
Publication of AT38530B publication Critical patent/AT38530B/en

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Description

  

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   Kohlenoxyd)   längere Zeit und im schnellen Strom über das Rohmaterial streichen lassen, ehe man mit dem Erhitzen beginnt. Man muss dabei die Gestalt der Muffel, in der das Glühen stattfindet, und die Schichtung des Materials so wählen, dass keine mechanischen Hindernisse für die Entfernung der Luft entstehen oder verbleiben. Zweckmässig ist es auch, bei Verwendung solcher Gase zunächst   auszupumpen,   um die beim Einlassen des Gases alsdann entstehenden Wirbel und Druckunterschiede zur   Ausfüllung aller   Ecken und Poren zu benutzen. 



   Das zum Abschrecken benutzte Wasser kann ausgekocht werden. Auch kann man ein indifferentes Gas während des Abschreckens einleiten. 



   Auch kann man an Stelle der Muffeln röhrenförmige Apparate für ununterbrochenen Betrieb   verwenden, welche   von aussen geheizt werden, während im Innern das Gemenge vermittels der   Schwere   oder vermittels mechanischer Transportvorrichtungen langsam vorwärts bewegt wird. 



  Die Apparate werden mit Einrichtungen für die Zuführung der genannten sauerstofffreien (d. h. keinen freien Sauerstoff enthaltenden) Gase versehen, und durch ein Mundstück mit Wasserverschluss wird die Luft von der erhitzten   Masse hei der Einführung   in das Wasser zum Zwecke   dea Abschreckens   ferngehalten. 
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   Abschreckprozess   in Abwesenheit von freiem Sauerstoff ausgeführt wird.



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   Carbon oxide) for a long time and in a rapid stream over the raw material before you start heating. The shape of the muffle in which the annealing takes place and the layering of the material must be chosen so that no mechanical obstacles to the removal of the air arise or remain. When using such gases, it is also expedient to first pump out in order to use the eddies and pressure differences that then arise when the gas is let in to fill all corners and pores.



   The water used for quenching can be boiled. An indifferent gas can also be introduced during quenching.



   In place of the muffles, tubular devices can also be used for uninterrupted operation, which are heated from the outside, while inside the mixture is slowly moved forward by means of gravity or by means of mechanical transport devices.



  The apparatus is provided with means for the supply of said oxygen-free (i.e. not containing free oxygen) gases and a mouthpiece with a water seal keeps the air away from the heated mass when it is introduced into the water for the purpose of quenching.
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   The quenching process is carried out in the absence of free oxygen.

Claims (1)

2. Ausführungsform des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dass nicht nur in bekannter Weise während des Glühens und Abschreckens der Zutritt äusserer Luft abgesperrt, sondern auch die in den Vorrichtungen zum Brennen und Abschrecken anfänglich vorhandene Luft entfernt wird. 2. Embodiment of the method according to claim 1, characterized in that not only is the access of external air blocked in a known manner during annealing and quenching, but the air initially present in the devices for firing and quenching is also removed. 3. Ausführungsform des Verfahrens nach Anspruch 1 und 2, dadurch gekennzeichnet, dass die in den Vorrichtungen zum Brennen und Abschrecken vorhandene Luft vor dem Brennen durch indifferente Gase vollständig verdrängt und das Durchleiten dieser Gase während des BrennensundAbschreckensfortgesetztwird. 3. Embodiment of the method according to claim 1 and 2, characterized in that the air present in the devices for burning and quenching is completely displaced by inert gases before burning and the passage of these gases is continued during the burning and quenching. 4. ausführungsform des Verfahrens nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass das Brennen in ununterbrochenem Betriebe mittels geeigneter, von einem Strom eines sauerstofffreien Gases durchflossener Apparate stattfindet. 4. embodiment of the method according to claim 1 to 3, characterized in that the burning takes place in uninterrupted operations by means of suitable apparatus through which a stream of oxygen-free gas flows.
AT38530D 1905-07-24 1906-07-20 Process for the production of lightfast lithopone. AT38530B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1905202709D DE202709C (en) 1905-07-24

Publications (1)

Publication Number Publication Date
AT38530B true AT38530B (en) 1909-08-25

Family

ID=5772828

Family Applications (1)

Application Number Title Priority Date Filing Date
AT38530D AT38530B (en) 1905-07-24 1906-07-20 Process for the production of lightfast lithopone.

Country Status (1)

Country Link
AT (1) AT38530B (en)

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