JPS56133431A - Treatment of iron material polluted by heavy metal - Google Patents
Treatment of iron material polluted by heavy metalInfo
- Publication number
- JPS56133431A JPS56133431A JP3623580A JP3623580A JPS56133431A JP S56133431 A JPS56133431 A JP S56133431A JP 3623580 A JP3623580 A JP 3623580A JP 3623580 A JP3623580 A JP 3623580A JP S56133431 A JPS56133431 A JP S56133431A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- mercury
- treating
- sulfide
- iron material
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Abstract
PURPOSE: To purify iron material polluted with mercury by treating the material with an aqueous soln. contg. ferric chloride and hydrochloric acid and adding sodium sulfide to the treating soln. after the treatment to make the soln. harmless and reusable.
CONSTITUTION: Iron material which has the surface polluted with metallic or inorg. mercury is treated with a treating soln. consisting of a 1,500l ferric chloride soln. of 37% concn., 600l hydrochloric acid of 35% concn. and 1,000l water to dissolve the mercury in the soln. and remove it from the material surface. The material thus purified is washed with water, and the washing water is added to the treating soln. to prevent mercury from being discharged from the treating system. Sodium sulfide is then added to this treating soln. by an equiv. or more to the contained mercury while agitating the soln. in an agitating vessel. The mercury and excess sodium sulfide are converted into insoluble sulfide and iron sulfide, respectively, and they are removed by filtration. The filtrate is a clean ferrous chloride soln. free from mercury, etc., and it can be reused to dissolve mercury.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55036235A JPS6053750B2 (en) | 1980-03-24 | 1980-03-24 | How to dispose of iron materials contaminated with heavy metals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55036235A JPS6053750B2 (en) | 1980-03-24 | 1980-03-24 | How to dispose of iron materials contaminated with heavy metals |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56133431A true JPS56133431A (en) | 1981-10-19 |
JPS6053750B2 JPS6053750B2 (en) | 1985-11-27 |
Family
ID=12464104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55036235A Expired JPS6053750B2 (en) | 1980-03-24 | 1980-03-24 | How to dispose of iron materials contaminated with heavy metals |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6053750B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012039944A1 (en) * | 2010-09-23 | 2012-03-29 | Conocophillips Company | Method for removing mercury contamination from solid surfaces |
RU2481161C1 (en) * | 2011-12-07 | 2013-05-10 | Сергей Васильевич Колесников | Method of demercurisation of surfaces contaminated by metallic mercury |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5075934A (en) * | 1973-11-12 | 1975-06-21 |
-
1980
- 1980-03-24 JP JP55036235A patent/JPS6053750B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5075934A (en) * | 1973-11-12 | 1975-06-21 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012039944A1 (en) * | 2010-09-23 | 2012-03-29 | Conocophillips Company | Method for removing mercury contamination from solid surfaces |
US8936686B2 (en) | 2010-09-23 | 2015-01-20 | Conocophillips Company | Method for removing mercury contamination from solid surfaces |
RU2481161C1 (en) * | 2011-12-07 | 2013-05-10 | Сергей Васильевич Колесников | Method of demercurisation of surfaces contaminated by metallic mercury |
Also Published As
Publication number | Publication date |
---|---|
JPS6053750B2 (en) | 1985-11-27 |
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