DE1054972B - Process for the production of largely mercury-free sulfuric acid - Google Patents

Process for the production of largely mercury-free sulfuric acid

Info

Publication number
DE1054972B
DE1054972B DEG22061A DEG0022061A DE1054972B DE 1054972 B DE1054972 B DE 1054972B DE G22061 A DEG22061 A DE G22061A DE G0022061 A DEG0022061 A DE G0022061A DE 1054972 B DE1054972 B DE 1054972B
Authority
DE
Germany
Prior art keywords
mercury
sulfuric acid
largely
production
free sulfuric
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.)
Pending
Application number
DEG22061A
Other languages
German (de)
Inventor
Dr Wernfried Diener
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.)
Evonik Operations GmbH
Original Assignee
TH Goldschmidt AG
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 TH Goldschmidt AG filed Critical TH Goldschmidt AG
Priority to DEG22061A priority Critical patent/DE1054972B/en
Publication of DE1054972B publication Critical patent/DE1054972B/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00Sulfur; Compounds thereof
    • C01B17/69Sulfur trioxide; Sulfuric acid
    • C01B17/90Separation; Purification
    • C01B17/906Removal of mercury

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Description

Verfahren zur Herstellung von weitgehend quecksilberfreier Schwefelsäure Konzentrierte Schwefelsäure, die aus quecksilberhaltigen sulfidischen Erzen hergestellt wird, enthält 0,001 bis 0,01% Quecksilber. Diese Quecksilbermengen schränken .den technischen Einsatz der Säure ein. Es treten z. B. beim Beizen von Metallen mit dieser Säure Störungen auf. Bei der Herstellung von Salzsäure nach. dem Sulfat-Salzsäure-Verfahren gelangt das Quecksilber in die Salzsäure, wodurch diese ebenfalls für das Beizen von Metallen unbrauchbar wird.Process for the production of largely mercury-free sulfuric acid Concentrated sulfuric acid produced from sulphidic ores containing mercury contains 0.001 to 0.01% mercury. These quantities of mercury limit the technical use of the acid. There occur z. B. when pickling metals with this acid interferes with. In the manufacture of hydrochloric acid after. the sulphate-hydrochloric acid process The mercury gets into the hydrochloric acid, which also makes it suitable for pickling of metals becomes unusable.

Bisher ist kein Verfahren bekanntgeworden, das es ermöglicht, den Quecksilbergehalt in einfacher Weise herabzusetzen. Die Reinigung quecksilberhaltiger Schwefelsäure soll den Quecksilbergehalt der Säure möglichst weitgehend herabsetzen und dahermöglichst keine neuen Verunreinigungen einschleppen. Zugleich soll die Reinigung aber billig sein.So far, no method has become known that makes it possible to Reduce the mercury content in a simple way. The cleaning of mercury Sulfuric acid should reduce the mercury content of the acid as much as possible and therefore, as far as possible, do not introduce any new impurities. At the same time, the Cleaning but be cheap.

Es wunde nun gefunden, daß Quecksilber aus konzentrierter Schwefelsäure (Metallsäure) weitgehend entfernt werden kann, wenn man diese mit Sulfiden der Schwefelwasserstoffgruppe, vorzugsweise mit Bleisulfid, behandelt.It has now been found that mercury is made from concentrated sulfuric acid (Metallic acid) can be largely removed if this is treated with sulphides of the hydrogen sulphide group, preferably treated with lead sulfide.

Technische Schwefelsäure enthält meist mehr oder weniger größere Mengen an Eisen und Blei, .die jedoch nicht so sehr stören, wie z. B. As, Hg, Cu usw. Daher ist der Einsatz von Bleisulfid besonders vorteilhaft. Die Reinigung gelingt zwar auch mit Ase S5 und sogar mit HgS, jedoch ist die Reinigung nicht so wirksam wie die mit Bleisulfid. Als B@leisulfi,d kann sogar da.s Erz, also Bleiglanz, zur weitgehenden Reinigung genommen werden.Technical sulfuric acid usually contains more or less large amounts of iron and lead, which, however, do not interfere as much as z. B. As, Hg, Cu etc. Hence the use of lead sulfide is particularly advantageous. The cleaning succeeds also with Ase S5 and even with HgS, however the cleaning is not as effective as those with lead sulfide. As B @ leisulfi, d, even da.s ore, i.e. galena, can be used to a large extent Cleaning to be taken.

Beispiel 1 1000 Teile konzentrierte Schwefelsäure mit einem Quecksilbergehalt von 0,009% werden mit 0,5 Teilen feinverteiltem Bleisulfid 1 bis 2 Stunden verrührt und vom Feststoff durch Filtration oder durch Zentrifugieren abgetrennt. Die erhaltene Schwefelsäure enthält 0,000004% Quecksilber.Example 1 1000 parts of concentrated sulfuric acid with a mercury content of 0.009% are stirred with 0.5 part of finely divided lead sulfide for 1 to 2 hours and separated from the solid by filtration or by centrifugation. The received Sulfuric acid contains 0.000004% mercury.

Beispiel 2 1000 Teile konzentrierte Schwefelsäure mit einem Quecksilbergehalt von 0,009% werden mit 0,4 Teilen Ase SS etwa 30 Minuten verrührt und vom Feststoff durch Filtration abgetrennt. Die Schwefelsäure enthält nun 0,004% Quecksilber.Example 2 1000 parts of concentrated sulfuric acid with a mercury content of 0.009% are stirred with 0.4 parts of Ase SS for about 30 minutes and remove the solid separated by filtration. The sulfuric acid now contains 0.004% mercury.

Beispiel 3 1000 Teile konzentrierte Schwefelsäure mit einem Quecksilbergehalt von 0,009% werden mit l Teil Hg S etwa 30 Minuten verrührt und vom Feststoff durch Filtration abgetrennt. Die Schwefelsäure enthält nun 0,004% Quecksilber. PATENTANSPRÜCHE: 1. Verfahren zur Herstellung von weitgehend quecksilberfreier Schwefelsäure, dadurch gekennzeichnet, daß .die quecksilberhaltige Schwefelsäure mit Sulfiden der Schwefelwasserstoffgruppe, vorzugsweise mit Bleisulfid, behandelt wind.Example 3 1000 parts of concentrated sulfuric acid with a mercury content of 0.009% are stirred with 1 part of Hg S for about 30 minutes and the solid through Filtration separated. The sulfuric acid now contains 0.004% mercury. PATENT CLAIMS: 1. Process for the production of largely mercury-free sulfuric acid, thereby characterized that .the mercury-containing sulfuric acid with sulfides of the hydrogen sulfide group, preferably with lead sulfide, treated wind.

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Abtrennung des Feststoffes durch Filtration oder Zentrifugieren unter eventuellem Zusatz von Filterhilfsmitteln erfolgt.2. The method according to claim 1, characterized in that the separation the solid by filtration or centrifugation with the possible addition of Filter aids takes place.

3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, -daß die Behandlung auf einem mit -dem Sulfid beschichteten Filterbogen oder in einer Säule erfolgt.3. The method according to claim 1, characterized in that the treatment is carried out on a filter sheet coated with the sulfide or in a column.

DEG22061A 1957-05-08 1957-05-08 Process for the production of largely mercury-free sulfuric acid Pending DE1054972B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG22061A DE1054972B (en) 1957-05-08 1957-05-08 Process for the production of largely mercury-free sulfuric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG22061A DE1054972B (en) 1957-05-08 1957-05-08 Process for the production of largely mercury-free sulfuric acid

Publications (1)

Publication Number Publication Date
DE1054972B true DE1054972B (en) 1959-04-16

Family

ID=7121872

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG22061A Pending DE1054972B (en) 1957-05-08 1957-05-08 Process for the production of largely mercury-free sulfuric acid

Country Status (1)

Country Link
DE (1) DE1054972B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875287A (en) * 1972-08-15 1975-04-01 Toho Zinc Co Ltd Removing mercury from concentrated sulfuric acid using iodides
US3947561A (en) * 1973-10-02 1976-03-30 St. Joe Minerals Corporation Method of removing mercury from sulfuric acid
US3954451A (en) * 1971-09-10 1976-05-04 Mitsui Mining & Smelting Co., Ltd. Method for the manufacture of mercury free sulfuric acid
JPS548191B2 (en) * 1972-10-24 1979-04-13
JPS548475B2 (en) * 1974-07-19 1979-04-16

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954451A (en) * 1971-09-10 1976-05-04 Mitsui Mining & Smelting Co., Ltd. Method for the manufacture of mercury free sulfuric acid
US3875287A (en) * 1972-08-15 1975-04-01 Toho Zinc Co Ltd Removing mercury from concentrated sulfuric acid using iodides
JPS548191B2 (en) * 1972-10-24 1979-04-13
US3947561A (en) * 1973-10-02 1976-03-30 St. Joe Minerals Corporation Method of removing mercury from sulfuric acid
JPS548475B2 (en) * 1974-07-19 1979-04-16

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