GB1439803A - Recovery of mercury - Google Patents
Recovery of mercuryInfo
- Publication number
- GB1439803A GB1439803A GB2673173A GB2673173A GB1439803A GB 1439803 A GB1439803 A GB 1439803A GB 2673173 A GB2673173 A GB 2673173A GB 2673173 A GB2673173 A GB 2673173A GB 1439803 A GB1439803 A GB 1439803A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- brine
- sulphide
- filter
- liquor
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G13/00—Compounds of mercury
- C01G13/04—Halides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
1439803 Electrolytic recovery of mercury using mercury cathode IMPERIAL CHEMICAL INDUSTRIES Ltd 13 May 1974 [5 June 1973] 26731/73 Addition to 1339261 Heading C7B [Also in Division C1] Mercury is removed from chlorine containing waste brine from a mercury cell by adding sulphide or hydrosulphide to the brine in an amount to produce a redox potential of the brine, relative to a saturated KCl-calomel electrode of a value more negative than +0.45 volts so as to precipitate the mercury as mercury sulphide. The mercury sulphide precipitate is removed by passage of the brine downwards through a filter comprising at least two directly superimposed layers of granular filtration material whose average particle size decreases and whose specific gravity increases from layer to layer from the top of the filter downwards. The precipitated mercury sulphide is removed from the filter by treatment with a liquor, such as sodium hypochlorite in brine, which dissolves the mercury sulphide and the mercury rich liquor drained off. Metallic mercury can be obtained from such liquors by recycling the liquor to a mercury cell and reducing electrolytically mercury. It is preferred to remove as much chlorine as possible from the mercury containing brine before precipitation of the mercury sulphide and further to remove insoluble matter, such as graphite, from the waste brine by for e.g. filtration. Examples of suitable materials for making mixed media filters include anthracite, coal, activated carbon, graphite, quartz, flint, silica, magnesia, alumina, garnet and sand.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2673173A GB1439803A (en) | 1973-06-05 | 1973-06-05 | Recovery of mercury |
ZA00743215A ZA743215B (en) | 1973-06-05 | 1974-05-20 | Recovery of mercury |
AU69287/74A AU482432B2 (en) | 1973-06-05 | 1974-05-23 | Recovery of mercury |
FR7419269A FR2232512B2 (en) | 1973-06-05 | 1974-06-04 | |
BE145027A BE815863R (en) | 1973-06-05 | 1974-06-04 | BRINE TREATMENT |
FI1701/74A FI61300C (en) | 1973-06-05 | 1974-06-04 | FOERFARANDE FOER AOTERVINNING AV KVICKSILVER |
JP49062991A JPS5032023A (en) | 1973-06-05 | 1974-06-05 | |
ES427007A ES427007A2 (en) | 1973-06-05 | 1974-06-05 | Recovery of mercury |
CA201,760A CA1030771A (en) | 1973-06-05 | 1974-06-05 | Recovery of mercury |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2673173A GB1439803A (en) | 1973-06-05 | 1973-06-05 | Recovery of mercury |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1439803A true GB1439803A (en) | 1976-06-16 |
Family
ID=10248356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2673173A Expired GB1439803A (en) | 1973-06-05 | 1973-06-05 | Recovery of mercury |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS5032023A (en) |
BE (1) | BE815863R (en) |
CA (1) | CA1030771A (en) |
ES (1) | ES427007A2 (en) |
FI (1) | FI61300C (en) |
FR (1) | FR2232512B2 (en) |
GB (1) | GB1439803A (en) |
ZA (1) | ZA743215B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4212715A (en) | 1977-09-17 | 1980-07-15 | Hoechst Aktiengesellschaft | Process for reducing losses of mercury in alkali metal chloride electrolysis |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS532950A (en) * | 1976-06-30 | 1978-01-12 | Toa Denpa Kougiyou Kk | Treating of mercury containing drainage |
-
1973
- 1973-06-05 GB GB2673173A patent/GB1439803A/en not_active Expired
-
1974
- 1974-05-20 ZA ZA00743215A patent/ZA743215B/en unknown
- 1974-06-04 FR FR7419269A patent/FR2232512B2/fr not_active Expired
- 1974-06-04 FI FI1701/74A patent/FI61300C/en active
- 1974-06-04 BE BE145027A patent/BE815863R/en not_active IP Right Cessation
- 1974-06-05 JP JP49062991A patent/JPS5032023A/ja active Pending
- 1974-06-05 CA CA201,760A patent/CA1030771A/en not_active Expired
- 1974-06-05 ES ES427007A patent/ES427007A2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4212715A (en) | 1977-09-17 | 1980-07-15 | Hoechst Aktiengesellschaft | Process for reducing losses of mercury in alkali metal chloride electrolysis |
Also Published As
Publication number | Publication date |
---|---|
FR2232512A2 (en) | 1975-01-03 |
CA1030771A (en) | 1978-05-09 |
FI61300B (en) | 1982-03-31 |
AU6928774A (en) | 1975-11-27 |
ZA743215B (en) | 1975-09-24 |
FR2232512B2 (en) | 1982-07-02 |
ES427007A2 (en) | 1976-12-16 |
FI61300C (en) | 1982-07-12 |
JPS5032023A (en) | 1975-03-28 |
FI170174A (en) | 1974-12-06 |
BE815863R (en) | 1974-12-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed |