DE1054972B - Process for the production of largely mercury-free sulfuric acid - Google Patents
Process for the production of largely mercury-free sulfuric acidInfo
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/906—Removal 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.
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)
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 |
-
1957
- 1957-05-08 DE DEG22061A patent/DE1054972B/en active Pending
Cited By (5)
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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