CN111575482A - Waste mercury reagent recovery method - Google Patents
Waste mercury reagent recovery method Download PDFInfo
- Publication number
- CN111575482A CN111575482A CN202010272243.6A CN202010272243A CN111575482A CN 111575482 A CN111575482 A CN 111575482A CN 202010272243 A CN202010272243 A CN 202010272243A CN 111575482 A CN111575482 A CN 111575482A
- Authority
- CN
- China
- Prior art keywords
- washing
- mercury
- waste
- reagent
- filtering
- 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.)
- Withdrawn
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B43/00—Obtaining mercury
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for recovering waste mercury reagent in mercury-containing waste recovery industry, which is characterized in that the waste mercury reagent is firstly filtered by wool fabric to remove residues; then filtering with chamois leather to remove impurities; and washing the mercury by acid washing, alkali washing and water washing for three times to obtain pure elemental mercury with the mercury purity of more than 92 percent. In the process, the waste gas generated by filtering is condensed and adsorbed and then discharged after reaching the standard, and the washing wastewater is precipitated and discharged after reaching the standard. The method has the advantages of simple process, low treatment cost, simple process, low cost, good economy and the like compared with a curing and burying method.
Description
Technical Field
The invention relates to the technical field of a waste mercury reagent recovery method, in particular to a mercury-containing waste resource recovery method, and belongs to the technical field of physical recovery and regeneration of mercury.
Background
In recent years, the national emphasis on the prevention and control of heavy metal pollution is increasing, and people pay more and more attention to the prevention and control of mercury pollution due to the effective notice of 'water guarantee about mercury' issued by the country in 8 months in 2017, and the pressure on the prevention and control of mercury pollution in the mercury-related industry is increasing. Particularly, the mercury smelting industry is strictly regulated by related national departments, and the industry faces huge environmental protection pressure.
At present, the waste mercury-containing reagent is treated by adopting a curing and burying technology in China, and the technology mainly has the problems of large consumption of a curing stabilizer, no resource recovery and the like.
In recent years, most of the treatment and disposal of mercury-containing reagents at home and abroad are solidification landfill technologies, for example, CN 108687114a discloses a "stabilization and solidification treatment process for mercury-containing reagent waste". The technology has a certain curing and stabilizing effect on the treatment of the waste mercury-containing reagent, is suitable for the treatment and disposal of various waste mercury-containing reagents, but has the problems of complex process, high treatment cost, certain landfill cost needing to be paid and the like, and is difficult to meet the actual requirements of waste production units.
Disclosure of Invention
In order to solve the problems of difficult disposal and high cost of the current waste mercury-containing reagent, the invention aims to provide a waste mercury reagent recovery method.
The technical scheme provided by the invention is as follows: filtering the waste mercury reagent by wool fabric to remove residues; then filtering with chamois leather to remove impurities; and then washing the mercury by acid washing, alkali washing and water washing sequentially for three times to obtain the elemental mercury. Waste gas generated in each filtering (wool filtering and suede filtering) process is condensed and adsorbed and then discharged after reaching the standard, and waste water generated in each washing (acid washing, alkali washing and water washing) process is precipitated and discharged after reaching the standard.
The adopted woolen cloth is pure woolen cloth, including damask, serge or tweed.
The adopted chamois leather is artificial chamois leather, and the raw material of the chamois leather is one or more than one of chemical fibers such as acrylic fiber, acetate fiber, terylene, chinlon and the like. The artificial chamois leather has a denier of less than 0.4.
The pickling solution for pickling is one or more of dilute hydrochloric acid, dilute sulfuric acid and dilute nitric acid, the pH value of the pickling solution is 3.5-5.5, and the pickling time is 1-3 hours.
The alkaline washing liquid is one or more of sodium hydroxide, sodium carbonate or sodium bicarbonate, the pH value of the alkaline washing liquid is 7.5-8.5, and the alkaline washing time is 1-2 hours.
The water for washing is distilled water, and the washing time is 1-2 h.
Compared with the prior art, the invention has the following positive effects: after three times of washing by acid washing, alkali washing and water washing, pure elemental mercury can be obtained, and the mercury purity is more than 92%. The method has the advantages of simple process, low treatment cost, simple process, low cost, good economy and the like compared with a curing and burying method.
Drawings
FIG. 1 is a flow chart of a method for recovering waste mercury reagent according to the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
500 mL of waste mercury reagent is taken, filtered by wool fabric, the residue is removed, and then filtered by chamois, and the impurities are removed. Adding the filtered waste mercury reagent into a cyclone pickling tank, adjusting the pH value of the liquid to 3.5, controlling the washing time to be 1h, standing for 1h after washing to generate layering, and discharging the lower-layer mercury-containing reagent.
Adding the waste mercury reagent obtained after acid washing into a cyclone alkaline washing tank, adjusting the pH value of the liquid to 8.5, controlling the washing time to be 1h, standing for 1h after washing to generate layering, and discharging the lower-layer mercury-containing reagent.
Adding the waste mercury reagent obtained after alkali washing into a cyclone rinsing bath, controlling the washing time to be 1h, standing for 1.5h after washing to generate layering, and discharging the mercury-containing reagent at the lower layer to obtain a pure elemental mercury product, wherein the purity of mercury is tested to be 92.20%.
Discharging: waste gas generated in the wool fabric filtering and chamois leather filtering processes is condensed and adsorbed and then is discharged after reaching the standard, and waste water generated in the acid washing, alkali washing and water washing processes is precipitated and then is discharged after reaching the standard.
Example 2
500 mL of waste mercury reagent is filtered by wool fabric, the residue is removed, and then the waste mercury reagent is filtered by chamois to remove impurities. Adding the filtered waste mercury reagent into a cyclone pickling tank, adjusting the pH value of the liquid to 4.5, controlling the washing time to be 2h, standing for 1h after washing to generate layering, and discharging the lower-layer mercury-containing reagent.
Adding the waste mercury reagent obtained after acid washing into a cyclone alkaline washing tank, adjusting the pH value of the liquid to 8.0, controlling the washing time to be 1.5h, standing for 1h after washing to generate layering, and discharging the lower-layer mercury-containing reagent.
Adding the waste mercury reagent obtained after alkali washing into a cyclone rinsing bath, controlling the washing time to be 1.5h, standing for 1.5h after washing to generate layering, and discharging the mercury-containing reagent at the lower layer to obtain a pure elemental mercury product, wherein the purity of mercury is 92.32% by testing.
The discharge of this example was the same as in example 1.
Example 3
500 mL of waste mercury reagent is filtered by wool fabric, the residue is removed, and then the waste mercury reagent is filtered by chamois to remove impurities. Adding the filtered waste mercury reagent into a cyclone pickling tank, adjusting the pH value of the liquid to 5.5, controlling the washing time to be 3h, standing for 1h after washing to generate layering, and discharging the lower-layer mercury-containing reagent.
Adding the waste mercury reagent obtained after acid washing into a cyclone alkaline washing tank, adjusting the pH value of the liquid to 7.5, controlling the washing time to be 2h, standing for 1h after washing to generate layering, and discharging the lower-layer mercury-containing reagent.
Adding the waste mercury reagent obtained after alkaline washing into a cyclone rinsing bath, controlling the washing time for 2h, standing for 1.5h after washing to generate layering, and discharging the mercury-containing reagent at the lower layer to obtain a pure elemental mercury product, wherein the purity of mercury is tested to be 92.05%.
The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the scope of the present invention. Any modification and replacement within the principle of the present invention should be included in the protection scope of the present invention.
The discharge of this example was the same as in example 1.
Claims (2)
1. A waste mercury reagent recovery method is characterized by comprising the following steps: filtering the waste mercury reagent by wool fabric to remove residues; then filtering with chamois leather to remove impurities; washing the mercury by acid washing, alkali washing and water washing sequentially for three times to obtain elemental mercury; the waste gas generated in each filtering process is condensed and adsorbed and then discharged after reaching the standard, and the waste water generated in each washing process is precipitated and discharged after reaching the standard.
2. The method for recovering the waste mercury reagent as claimed in claim 1, wherein: the adopted woolen cloth is pure woolen cloth, including damask, serge or tweed; the adopted chamois leather is artificial chamois leather, the raw material of which adopts one or more than one of chemical fibers such as acrylic fiber, acetate fiber, terylene, chinlon and the like, and the denier number of the artificial chamois leather is below 0.4 denier; the pickling solution for pickling is one or more of dilute hydrochloric acid, dilute sulfuric acid and dilute nitric acid, the pH value of the pickling solution is 3.5-5.5, and the pickling time is 1-3 h; the alkaline washing liquid is one or more of sodium hydroxide, sodium carbonate or sodium bicarbonate, the pH value of the alkaline washing liquid is 7.5-8.5, and the alkaline washing time is 1-2 h; the water for washing is distilled water, and the washing time is 1-2 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010272243.6A CN111575482A (en) | 2020-04-09 | 2020-04-09 | Waste mercury reagent recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010272243.6A CN111575482A (en) | 2020-04-09 | 2020-04-09 | Waste mercury reagent recovery method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111575482A true CN111575482A (en) | 2020-08-25 |
Family
ID=72122714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010272243.6A Withdrawn CN111575482A (en) | 2020-04-09 | 2020-04-09 | Waste mercury reagent recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111575482A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113604674A (en) * | 2021-08-23 | 2021-11-05 | 云南金鼎锌业有限公司 | Synergistic waste mercury regeneration technology and soaking precipitation pool thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2002902A1 (en) * | 2007-06-15 | 2008-12-17 | Centre international de traitements et de recyclage des ordures nocives (CITRON) | Method of processing mercurial waste and facility for implementing same |
| CN101701293A (en) * | 2009-11-03 | 2010-05-05 | 武汉钢铁(集团)公司 | Method for recovering waste mercury |
| CN102110560A (en) * | 2011-02-24 | 2011-06-29 | 宜兴市苏南固废处理有限公司 | Innocent treatment method for mercury-containing waste tube |
| CN207918573U (en) * | 2017-12-28 | 2018-09-28 | 新疆鸿发化工产品有限公司 | Mercurous class waste treatment equipment |
| CN110433566A (en) * | 2019-07-29 | 2019-11-12 | 北京建筑材料科学研究总院有限公司 | A kind of filtration system and its method |
-
2020
- 2020-04-09 CN CN202010272243.6A patent/CN111575482A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2002902A1 (en) * | 2007-06-15 | 2008-12-17 | Centre international de traitements et de recyclage des ordures nocives (CITRON) | Method of processing mercurial waste and facility for implementing same |
| CN101701293A (en) * | 2009-11-03 | 2010-05-05 | 武汉钢铁(集团)公司 | Method for recovering waste mercury |
| CN102110560A (en) * | 2011-02-24 | 2011-06-29 | 宜兴市苏南固废处理有限公司 | Innocent treatment method for mercury-containing waste tube |
| CN207918573U (en) * | 2017-12-28 | 2018-09-28 | 新疆鸿发化工产品有限公司 | Mercurous class waste treatment equipment |
| CN110433566A (en) * | 2019-07-29 | 2019-11-12 | 北京建筑材料科学研究总院有限公司 | A kind of filtration system and its method |
Non-Patent Citations (1)
| Title |
|---|
| 中国冶金百科全书总编辑委员会《有色金属冶金》卷编辑委员会: "《中国冶金百科全书：有色金属冶金》", 31 January 1999, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113604674A (en) * | 2021-08-23 | 2021-11-05 | 云南金鼎锌业有限公司 | Synergistic waste mercury regeneration technology and soaking precipitation pool thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109930174A (en) | The method that aluminium electrolyte takes off lithium purification and recycling lithium | |
| CN102260795A (en) | Method for directly producing electrolytic nickel by using copper nickel renewable resources | |
| CN102745791B (en) | Method for treating industrial wastewater | |
| CN102010082B (en) | Treatment method for recycling waste dilute sulfuric acid | |
| CN102703708A (en) | Method for extracting gold and silver from electronic wastes | |
| CN106399715A (en) | Method for producing electrolytic zinc through high-chloride zinc ash material ammonia leaching ion exchange combined process | |
| CN105420502A (en) | Method for recovering indium from waste liquid crystal display screen panel | |
| CN110697919A (en) | Method for efficiently recovering electrode foil waste acid by using special short bed acid retardation resin | |
| CN101126164B (en) | Method for producing electrolytic zinc from zinc material with high-content of fluorin and silicon dioxide | |
| CN106381397A (en) | Method for dechlorinating through zinc ash material ammonia-leaching ion exchange combined process | |
| CN111018001A (en) | Process method for treating hot galvanizing waste hydrochloric acid | |
| CN111575482A (en) | Waste mercury reagent recovery method | |
| CN106756010A (en) | The method that fluorine in solution of zinc sulfate is removed after the roasting of zinc metallurgy white residue | |
| CN106542506A (en) | A kind of method that selenium is reclaimed from heavy tellurium waste liquid | |
| CN101445268B (en) | Technique for recovering zinc chloride from waste water in reduction process of isooctyl thioglycolate | |
| CN113512652A (en) | Method for extracting gallium metal from coal-series solid waste | |
| CN108866337A (en) | A method of processing metal sludge | |
| CN101871045A (en) | Method for producing zinc by utilizing sulphate process titanium dioxide waste acid | |
| CN117286343A (en) | Method for recycling and preparing high-purity silver from silver-containing waste | |
| CN204529926U (en) | The ion-exchange dechlorination system of solution of zinc sulfate in wet method zinc abstraction | |
| CN101337725B (en) | PVA precipitant and processing method for desizing waste water | |
| CN102951688B (en) | Production process for cogeneration of polymerization ferric chloride water purification agent by using potassium fluotitanate | |
| CN108425017B (en) | The method of valuable metal is recycled from copper indium gallium selenide refuse battery chip | |
| CN1037115C (en) | Method for raising cyaniding extraction rate and recovery percent of carbonaceous gold ore by compound inhibitor | |
| CN215887184U (en) | Equipment for recovering zinc in tin smelting smoke dust |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200825 |