DE855434C - Process for the production of white lead - Google Patents

Process for the production of white lead

Info

Publication number
DE855434C
DE855434C DEL7936A DEL0007936A DE855434C DE 855434 C DE855434 C DE 855434C DE L7936 A DEL7936 A DE L7936A DE L0007936 A DEL0007936 A DE L0007936A DE 855434 C DE855434 C DE 855434C
Authority
DE
Germany
Prior art keywords
white lead
lead
production
nozzles
white
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
Application number
DEL7936A
Other languages
German (de)
Inventor
Fritz Dipl-Ing Lehmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to DEL7936A priority Critical patent/DE855434C/en
Priority to DEL9233A priority patent/DE900256C/en
Application granted granted Critical
Publication of DE855434C publication Critical patent/DE855434C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/14—Compounds of lead
    • C09C1/16—White lead
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G21/00—Compounds of lead

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Silicon Compounds (AREA)

Description

Das sogenannte französische Verfahren der Bleiweißgewinnung beruht darauf, daß unter gewissen Voraussetzungen Blei mittels Essigsäure derart gelöst wird, daß die entstehende Bleiacetatlösung in begrenzter Konzentration bei Hinzufügen von CO2-Gas flockiges Bleiweiß im Lösungsmittel ausscheidet. The so-called French process of white lead production is based on the fact that, under certain conditions, lead is dissolved by means of acetic acid in such a way that the resulting lead acetate solution excretes flaky white lead in the solvent in a limited concentration when CO 2 gas is added.

Das vorliegende Verfahren geht andere Wege: Die nach bekannter Weise hergestellte Bleiacetatlösung wird nunmehr in fein verteiltem Zustand mit möglichst großer Reaktionsoberfläche, z. B. durch Wirbeldüsen, in XTebelform in ein Reaktionsgefäß gebracht, dem gleichzeitig CO2 in Gasform durch Düsen eingeblasen wird. Bei der sehr innigen Vermischung beider Grundstoffe schlägt sich das gewünschte Bleiweiß nieder. Da diese Reaktion ohne Unterbrechung durchgeführt werden kann, ist die Kontinuität des Verfahrens gegeben.The present process takes a different approach: The lead acetate solution prepared in a known manner is now in a finely divided state with the largest possible reaction surface, e.g. B. by vortex nozzles, placed in X T ebelform in a reaction vessel, which at the same time CO 2 is blown in gas form through nozzles. The desired white lead is deposited in the very intimate mixing of the two raw materials. Since this reaction can be carried out without interruption, the continuity of the process is given.

Ein schnelleres Arbeiten des gewünschten Vorgangs wird durch Anwendung von Ultraschall erreicht, der das Absetzen des Bleiweißes beschleunigt.A faster work of the desired process is achieved by using ultrasound, which accelerates the settling of the white lead.

Das vorliegende Verfahren hat gegenüber dem bekannten den Vorteil, daß das niedergeschlagene Bleiweiß durch entsprechende Vorrichtungen, z. B. Schaber und Schnecken, laufend aus dem Reaktionsgefäß entfernt werden kann, während gleichzeitig der Bleiweißgevvinnungsprozeß durch Einblasen von Bleiacetatlösung und CO2 weitergeht.The present method has the advantage over the known method that the precipitated white lead by appropriate devices, eg. B. scrapers and screws can be continuously removed from the reaction vessel, while at the same time the Bleiweißvervinnungsprozess continues by blowing in lead acetate solution and CO 2 .

Weiter besteht die Möglichkeit, das Bleiweiß schon beim Entstehen einem Trocknungsprozeß zu unterziehen, indem das einzublasende CO»-Gas vorgewärmt dem Reaktionsgefäß zugeführt wird, demThere is also the possibility of drying the white lead as it arises undergo by preheating the injected CO »gas is fed to the reaction vessel, the

man aus Gründen der Wirtschaftlichkeit heiße inerte Gase zusetzen kann, um möglichst viel Wärme an das entstehende Bleiweiß heranzubringen. you can add hot inert gases for reasons of economy to as much as possible Bring heat to the resulting white lead.

Claims (4)

PATENTANSPRÜCHE;PATENT CLAIMS; i. Verfahren zur Gewinnung von Bleiweiß, dadurch gekennzeichnet, daß man in bekannter Weise hergestellte Bleiacetatlösung in feinverteilter Form, z. B. durch Nebeldüsen, mit gasförmigem CO2, das ebenfalls durch Düsen zugeleitet wird, reagieren läßt und das ausgefällte Bleiweiß kontinuierlich wegführt.i. Process for the production of white lead, characterized in that lead acetate solution prepared in a known manner in finely divided form, for. B. by mist nozzles, can react with gaseous CO 2 , which is also fed through nozzles, and continuously removes the precipitated white lead. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß man vorgewärmtes CO2-GaS, auch unter Zusatz von heißen inerten Gasen, verwendet.2. The method according to claim i, characterized in that preheated CO 2 gas, also with the addition of hot inert gases, is used. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß man die Abscheidung von Bleiweiß durch Ultrasehall beschleunigt. 3. Process according to Claims 1 and 2, characterized in that the deposition accelerated by white lead through ultrasound. 4. Vorrichtung zur Durchführung des Verfahrens nach den Ansprüchen 1 bis 3, gekennzeichnet durch Anbringen von Schabern oder Schnecken im Reaktionsgefäß zwecks kontinuierlicher Austragung des abgeschiedenen Bleiweißes. 4. Device for performing the method according to claims 1 to 3, characterized by placing scrapers or screws in the reaction vessel for the purpose of continuous Discharge of the separated white lead. O 5465 11.52O 5465 11.52
DEL7936A 1950-12-21 1950-12-21 Process for the production of white lead Expired DE855434C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEL7936A DE855434C (en) 1950-12-21 1950-12-21 Process for the production of white lead
DEL9233A DE900256C (en) 1950-12-21 1951-05-09 Process for the production of white lead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL7936A DE855434C (en) 1950-12-21 1950-12-21 Process for the production of white lead

Publications (1)

Publication Number Publication Date
DE855434C true DE855434C (en) 1952-11-13

Family

ID=7257297

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL7936A Expired DE855434C (en) 1950-12-21 1950-12-21 Process for the production of white lead

Country Status (1)

Country Link
DE (1) DE855434C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK151384B (en) * 1979-10-27 1987-11-30 Doerken Ewald Ag THERMOSTABLE BLUE WHITE AND ITS APPLICATION FOR PIGMENTATION OF THERMOPLASTIC AND ELASTIC POLYMERS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK151384B (en) * 1979-10-27 1987-11-30 Doerken Ewald Ag THERMOSTABLE BLUE WHITE AND ITS APPLICATION FOR PIGMENTATION OF THERMOPLASTIC AND ELASTIC POLYMERS

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