DE34616C

DE34616C - Establishments of chambers for the manufacture of lead white with the aid of electrical excitation

Info

Publication number: DE34616C
Application number: DENDAT34616D
Authority: DE
Original assignee: Individual
Current assignee: Individual

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die vorliegende Erfindung bezieht sich auf das durch Patent No. 25239 gekennzeichnete Verfahren der Bleiweifsfabrikation unter Beihülfe elektrischer Thätigkeit, und betrifft mehrere neue Verwendungsarten der in Bezug auf Blei elektronegativen Körper in den Kammern oder Behältern, in welchen das metallische Blei in Bleiweifs übergeführt wird, zu dem Zwecke, einen möglichst raschen und wirkungsvollen Verlauf des Processes herbeizuführen.The present invention relates to that disclosed by patent no. 25239 marked Process of lead manufacture with the aid of electrical action, and concerns several new uses of the lead electronegative bodies in the chambers or containers in which the metallic lead is converted into lead white, to the Purposes of bringing about the fastest and most effective possible course of the process.

Die Kammer, in welcher die Ueberführung des Bleies in Bleiweifs stattfindet, ist aus Ziegeln gemauert oder aus Schiefer oder einem anderen geeigneten Material hergestellt und mit einer Heizschlange oder irgend einer anderen geeigneten Heizvorrichtung versehen.The chamber in which the lead is converted into lead white is made of bricks bricked or made of slate or other suitable material and with a heating coil or any other suitable heating device.

Der Boden der Kammer und die Innenfläche der Decke derselben werden mit Zinn oder irgend einer anderen in Bezug auf Blei elektronegativen Substanz bekleidet, welche jedoch so gewählt sein mufs, dafs sie der Einwirkung der bei dem Procels zur Verwendung kommenden Säuregase und Dämpfe zu widerstehen vermag.The bottom of the chamber and the inner surface of the ceiling of the same are covered with tin or any other electronegative substance relating to lead, which however, it must be chosen in such a way that it is subject to the action of the process for use able to withstand coming acid gases and vapors.

In gleicher Weise können auch die Seitenwände der Kammer ganz oder theilweise mit Zinn etc. bekleidet sein. Die einzelnen Theile der Zinn- oder sonstigen Bekleidung stehen mit dem Blei in elektrisch leitender Verbindung.In the same way, the side walls of the chamber can also be wholly or partially with Tin, etc. to be clad. The individual parts of the tin or other clothing are standing with the lead in an electrically conductive connection.

Durch diese Einrichtung wird, besonders wenn auch die Seitenwände mit der betreffenden Bekleidung versehen werden, eine äufserst kräftige und gleichmäfsig elektrische Wirkung erzielt, welche die Ueberführung des metallischen Bleies in Bleiweifs wesentlich begünstigt.This facility is, especially if the side walls with the concerned Clothing are provided with an extremely powerful and uniform electrical effect achieved, which significantly favors the conversion of the metallic lead into white lead.

Statt der beschriebenen vollständigen Auskleidung der Kammern mit Zinn oder einem anderen zu Blei elektronegativen Stoff kann zur Erzielung der elektrischen Erregung auch folgende Einrichtung getroffen werden. In der Kammer werden in verschiedenen Höhenlagen Gefäfse mit Wasser oder Säurelösungen angebracht, und in diese Stücke von Graphit, Koks oder anderen zu Blei elektronegativen Stoffen eingelegt und mit dem in Bleiweifs überzuführenden Blei durch Platin-, Zinn- oder andere geeignete Leitungsdrähte verbunden. Es entstehen auf diese Weise gewissermafsen eine Anzahl galvanischer Elemente in der Kammer, wodurch eine äufserst energische elektrische Erregung hervorgerufen wird, welche das Blei als positiven Pol für die Einwirkung der zur Ueberführung dienenden Gase und Dämpfe äufserst empfänglich macht.Instead of the described complete lining of the chambers with tin or a Another electronegative substance to lead can also be used to achieve electrical excitation the following facility must be taken. In the chamber are at different altitudes Vessels with water or acid solutions attached, and in these pieces of graphite, coke or other substances that are electronegative to lead and are inserted with the lead to be converted into lead white Lead connected by platinum, tin or other suitable lead wires. It arise in this way a number of galvanic elements in the chamber, so to speak, whereby an extremely energetic electrical excitation is produced, which the lead as a positive pole for the action of the gases and vapors used for the transfer makes you extremely receptive.

Diese Wasser- oder Säurebehälter können auch gleich dazu dienen, die unten am Boden in die Kammer eintretenden Gase und Dämpfe in den oberen Theilen der Kammer genügend feucht und kühl zu halten, so dafs ihre Wirkungsweise ungeschwächt in allen Theilen der Kammer eine gleichmäfsige bleibt.These water or acid containers can also be used at the bottom on the floor gases and vapors entering the chamber are sufficient in the upper parts of the chamber to keep them moist and cool, so that their mode of action is not weakened in all parts of the Chamber remains a uniform.

Die Behälter sind hierzu in dem Mafse der Verdunstung beständig mit frischem Wasser oder solcher Säurelösung zu speisen, wie sieTo this end, the containers are resistant to fresh water to the extent that they evaporate or to feed such acid solution as they do

Claims

is used to generate the gases and vapors that cause the formation of lead white.

A third way of arranging the materials that are electronegative to lead the lead used is expediently given the form of thin plates or rusty grille or simple frame. Depending on a certain number of these plates etc. is combined into a packet, in such a way that the bottom plate of each packet rests on a frame made of wood or other suitable material, which is covered with tin or any other substance that is electronegative to lead, and on this bottom Lead plate, as well as two or more plates made of suitable material between all following plates, Sticks clad with pewter are also placed, so that there is a sufficiently free space between all lead plates, etc. for the free passage of moist gases and vapors is available and each Packet thus forms a kind of Voltaic column. Instead of the pewter-coated rods you can also those made of carbon, graphite or similar electronegative material without tin cladding to be used.

Each packet assembled in this way can hold approximately two to four dozen lead plates included, and with these packets the chamber is now in some convenient way filled. However, it is useful to have a certain number of packages, say four or six or eight of them, always to be united into a larger bale by means of a frame, in this way to facilitate and speed up the filling and emptying of the chamber.

These last-mentioned frames are made of wood and are partly also made of tin clothed.

It is well known that the lead plates used for the manufacture of lead white have only one thickness from 1 to 5 mm, so that they have to be melted down again and again as soon as a single lead white cover has been tapped from them. This frequent meltdown Of course, it causes costs and loss of time, and it is therefore intended in the present Trap panels, grids or frames up to 25 mm thick are used. The advantage is thereby achieved that the plates etc. after tapping off the white lead several times without further ado Manufacture of lead white can be used and only after repeated use a meltdown is required.

Patenτ claim:

In the process, protected by patent No. 25239, for the production of lead white using electrical activity, the use of bodies which are electronegative with respect to lead in such a way that one:
ι. the inner surfaces of the floor, the ceiling and possibly also the side walls of the chambers are completely or partially covered with tin or other material that is electronegative to lead, and this covering is brought into electrically conductive contact with the lead to be used;

2. in the chamber at different heights places containers with water or acid solutions, and pieces of substances that are electronegative to lead (tin, graphite, Coke, etc.) and connects them conductively with the lead, in such a way that, as it were a number of galvanic elements is formed and also a uniform moisturizing and cooling of the the gases and vapors causing the transfer are achieved through the entire chamber;

3. Arranges the lead plates in packs and between the individual plates two or made more of wood or other suitable material and clad in pewter inserts provided rods, which, however, also by rods made of carbon, graphite or analogous material that is electronegative to lead can be replaced.