DE392049C - Process for the preparation of a dye - Google Patents

Process for the preparation of a dye

Info

Publication number
DE392049C
DE392049C DEN19814D DEN0019814D DE392049C DE 392049 C DE392049 C DE 392049C DE N19814 D DEN19814 D DE N19814D DE N0019814 D DEN0019814 D DE N0019814D DE 392049 C DE392049 C DE 392049C
Authority
DE
Germany
Prior art keywords
zinc
carbonate
dye
solution
hydrochloric acid
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
DEN19814D
Other languages
German (de)
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
Application granted granted Critical
Publication of DE392049C publication Critical patent/DE392049C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G9/00—Compounds of zinc
    • C01G9/02—Oxides; Hydroxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Description

Verfahren zur Herstellung eines Farbstoffes. Die Erfindung betrifft ein Verfahren zur Herstellung von reinem Zinkoxyd aus Zinkerzen, Zinkrauch, unreinem Zinkoxyd oder Zinkkarbonat usw. und besteht darin, daß aus den Lösungen von mit diesen Stoffen und einer Säure hergestellten Zinksalzen zunächst das bekanntlich leicht in reinem Zustand gewinnbare Zinkkarbonat gefällt und dieses mittels Ätzalkalilösung in Zinkoxyd verwandelt wird.Process for the preparation of a dye. The invention relates to a process for the production of pure zinc oxide from zinc ores, zinc smoke, impure Zinc oxide or zinc carbonate etc. and consists in that from the solutions of with First of all, it is known that these substances and an acid produced zinc salts Zinc carbonate, which can be easily extracted in the pure state, is precipitated using a caustic alkali solution is transformed into zinc oxide.

Zweckmäßig löst mari das in den Ausgangsstoffen enthaltene Zink in Salzsäure und fällt diese in üblicher Weise gereinigte Lösung in bekannter Weise mittels Magnesiumkarbonat oder Magnesiumoxyd unter Einleiten von Kohlensäure.Expediently, mari dissolves the zinc contained in the starting materials Hydrochloric acid and this solution, purified in the usual way, precipitates in a known manner by means of magnesium carbonate or magnesium oxide with the introduction of carbonic acid.

Die hierbei entstehende Magnesiumchloridlösung wird eingeengt, mittels Magnesiumoxyd in Magnesiumoxychlorid verwandelt, aus dem bekanntlich die .Salzsäure und die Magnesia leicht wiedergewonnen werden kann. Das erhaltene Zinkkarbonat wird sorgfältig gewaschen und mit einer verdünnten Natron- oder Kalilauge behandelt, wobei z. B. nach der Gleichung: Zn C03+2NaOH-Zn0+H=O Nag C 03 Zinkoxyd entsteht.The resulting magnesium chloride solution is concentrated by means of Magnesium oxide transformed into magnesium oxychloride, from which, as is well known, hydrochloric acid and the magnesia can be easily recovered. The zinc carbonate obtained is carefully washed and treated with a dilute sodium or potassium hydroxide solution, where z. B. according to the equation: Zn C03 + 2NaOH-Zn0 + H = O Nag C 03 zinc oxide is formed.

Das so erhaltene Zinkoxyd wird getrocknet. Es besitzt eine schöne weiße Farbe, während das in üblicher Weise durch Erhitzen des Karbonats gewonnene Zinkoxyd meist mehr oder weniger gelb gefärbt ist. Das Verfahren bietet auch für die Rückgewinnung der Salzsäure einen Vorteil. Es ist nämlich möglich, die Fällung des Karbonats in einer konzentrierten Lösung auszuführen, welche eine leichte Wiedergewinnung der Salzsäure gestattet, während die Fällung des Oxyds in einer sehr verdünnten Lösung stattfinden muß, deren Einengung zwecks Rückgewinnung der Salzsäure kostspielig wäre.The zinc oxide thus obtained is dried. It has a beautiful white color, while that obtained in the usual way by heating the carbonate Zinc oxide is usually more or less yellow in color. The procedure also caters for the recovery of hydrochloric acid is an advantage. Namely, it is possible to do the precipitation of the carbonate in a concentrated solution which is easy to recover the hydrochloric acid allowed, while the precipitation of the oxide in a very dilute one Solution must take place, the concentration of which is expensive for the purpose of recovering the hydrochloric acid were.

Zum Lösen der Rohstoffe kann an Stelle der Salzsäure eine andere Säure, beispielsweise Schwefelsäure, verwendet werden, doch ist die Verwendung von Salzsäure vorteilhafter, weil sie aus den Filtraten von Zinkkarbonat leicht wiedergewonnen werden kann.To dissolve the raw materials, another acid can be used instead of hydrochloric acid, e.g. sulfuric acid, but hydrochloric acid is used more advantageous because they are easily recovered from the filtrates of zinc carbonate can be.

Claims (1)

PATENT-ANsPRUcH: Verfahren zur Herstellung eines Farbstoffes, dadurch gekennzeichnet, daß man aus Zinksalzlösung in bekannter Weise reines- körniges Zinkkarbonat, vorzugsweise mittels Magnesiumkarbonat fällt, dieses auswäscht und dann mittels einer Lösung von Atzalkali in Zinkoxyd verwandelt.PATENT CLAIM: Process for the production of a dye, thereby characterized in that pure granular zinc carbonate is produced from zinc salt solution in a known manner, preferably falls by means of magnesium carbonate, this washes out and then by means of a solution of caustic alkali transformed into zinc oxide.
DEN19814D 1919-11-15 1921-03-31 Process for the preparation of a dye Expired DE392049C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR392049X 1919-11-15

Publications (1)

Publication Number Publication Date
DE392049C true DE392049C (en) 1924-03-15

Family

ID=8896148

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN19814D Expired DE392049C (en) 1919-11-15 1921-03-31 Process for the preparation of a dye

Country Status (1)

Country Link
DE (1) DE392049C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5175769A (en) * 1991-07-23 1992-12-29 Rolm Systems Method for time-scale modification of signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5175769A (en) * 1991-07-23 1992-12-29 Rolm Systems Method for time-scale modification of signals

Similar Documents

Publication Publication Date Title
DE2257521C3 (en) Continuous process for the extraction of very pure clay as well as the accompanying substances iron and potassium in technically usable form from aluminum-containing ores
GB271873A (en) Improvement in methods of obtaining zirconium compounds
DE392049C (en) Process for the preparation of a dye
DE379410C (en) Process for the production of sodium dichromate from sodium chromate using carbonic acid
DE570015C (en) Process for de-ironing minerals such as bauxite, clay, kieselguhr, and residues such as coal slag, blast furnace slag
DE585544C (en) Process for the extraction of copper from solutions obtained by gradually leaching chlorinated roasted gravel
AT128332B (en) Process for the production of potassium sulphate from naturally occurring multiple sulphates.
AT111833B (en) Process for the extraction of valuable components from chlorinated roasted gravel burns by step-by-step leaching
DE517748C (en) Process for the recovery of valuable components from chlorinated roasted gravel by leaching
DE853161C (en) Process for obtaining iodine and potash salts from blast furnace fly ash
DE406363C (en) Process for the preparation of potassium sulfate from carnallite and Epsom salt
DE547695C (en) Production of clay with simultaneous extraction of hydrochloric acid and alkali compounds
DE431257C (en) Process for the production of lithium carbonate from final liquors containing potassium sulphate
DE381423C (en) Process for obtaining pure zinc sulfide
DE565964C (en) Process for processing potash salts
AT151634B (en) Process for processing aluminum ores.
DE407988C (en) Process for processing rock salt into loose table salt
AT113661B (en) Process for the extraction of the valuable components from chlorinating roasted gravel burns.
DE944066C (en) Process for iron removal and decolorization of caustic alkali solutions
DE478740C (en) Process for the production of titanium compounds, in particular titanium acid
DE429722C (en) Process for the preparation of ammonium chloride from final liquors containing magnesium chloride in potash production
DE483757C (en) Process for cleaning lead-containing chloride liquor
AT88718B (en) Process for the production of cyn sodium.
DE648140C (en) Process for the preparation of an agent containing copper oxychloride suitable for combating cryptogams
DE715906C (en) Process for the production of potassium sulfate from syngenite