CN106282575A - A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal - Google Patents
A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal Download PDFInfo
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- CN106282575A CN106282575A CN201610738917.0A CN201610738917A CN106282575A CN 106282575 A CN106282575 A CN 106282575A CN 201610738917 A CN201610738917 A CN 201610738917A CN 106282575 A CN106282575 A CN 106282575A
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- selenium
- platinum group
- group metal
- waste water
- metal
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- 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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/02—Elemental selenium or tellurium
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, be specifically related to be exchanged by metal replacement, chemical precipitation, ion, adsorb and platinum group metal waste liquid that the method such as electrolysis produces reclaims selenium.Comprise the following steps: control platinum group metal charge liquid acidity 1 2mol/L on selenium, solution is warming up to 75 85 DEG C, by 2.5 3 times of addition sodium sulfitees of the amount of selenium material in solution, cool down after reacting 2 4h, filter, after filtering residue is washed till neutrality and to selenium recovery system；Filtrate uses metal replacement, chemical precipitation, ion exchange, adsorb and the method such as electrolysis reclaims noble metal.It is high that the present invention has selenium deposition efficiency, prevents selenium to advantages such as the secondary pollutions of noble metal.
Description
Technical field
The invention belongs to metal separation technology field, be specifically related to a kind of from by metal replacement, chemical precipitation, ion friendship
The method changed, adsorb and reclaim selenium in platinum group metal waste water that the method such as electrolysis produces.
Technical background
Platinum group metal content in the earth's crust is rare, the platinum mineral having been found that at nature such as: Chalkopyrite, pentlandite, speckle
In the mineral such as copper mine, platinum, palladium, rhodium, iridium etc. with selenium presented in semimetal intermetallic compound.Purify in platinum group metal feed separation
During, selenium and platinum group metal association are scattered in each flow process, and loss is greatly.
At present, from the waste liquid of platinum group metal, reclaim noble metal mainly have metal replacement, chemical precipitation, ion exchange, absorption
And the method such as electrolysis.While reclaiming enrichment platinum group metal, also result in the enrichment of selenium.Processing the platinum group metal material reclaimed
While, owing to selenium is the most effectively an open circuit, cause selenium association platinum group metal again to be dissolved, the selenium in feed liquid is with Monohydrated selenium dioxide
Presented in selenate radical, circulation disperses each flow process again, causes the loss of rare precious metals.
Summary of the invention
The technical problem to be solved is the deficiency in order to overcome above technology, and provides a kind of from passing through metal
Displacement, chemical precipitation, ion exchange, the method adsorbing and reclaim selenium in platinum group metal waste water that the method such as electrolysis produces, the party
Method can be effectively used for selenium in the waste liquid of platinum group metal and separates with platinum group metal.
Technical problem solved by the invention is achieved through the following technical solutions:
A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, comprise the steps:
(1) controlling the waste water feed acidity Han selenium platinum group metal is 1-2mol/L；
(2) selenium platinum group metal waste water feed liquid will be contained and be warming up to 75-85 DEG C, and add sodium sulfite, after reaction 2-4h, be cooled to room
Temperature, filters, and after filtering residue is washed till neutrality and to selenium recovery system, filtrate is stand-by；
(3) filtrate uses metal replacement, chemical precipitation, ion exchange, adsorbs and the method such as electrolysis reclaims noble metal；
The addition of described step (2) sulfite hydrogen sodium is containing the 2.5-3 of the amount of selenium material in the waste water feed liquid of selenium platinum group metal
Times.
Controlling the waste water feed acidity Han selenium platinum group metal in described step (1) is 1.2-1.6mol/L.
Reaction principle: 4NaHSO3+H2SeO3→Se↓+2SO2↑+2Na2SO4+H2O
The invention discloses a kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, be specifically related to from by metal replacement,
Chemical precipitation, ion exchange, the method adsorbing and reclaim selenium in platinum group metal waste water that the method such as electrolysis produces.The present invention passes through
Research feed liquid system and acidity condition, have found one and can extract platinum group metal and give up on the basis of then screening all kinds of precipitant
The reagent of the selenium in liquid.It is high that the present invention has selenium deposition efficiency, prevents selenium to advantages such as the secondary pollutions of noble metal.With existing skill
Art compare have the advantage that the deposition efficiency of 1. the method selenium more than 90%, and the loss of platinum group metal is less than 5%；2.
The method be platinum group metal separate with selenium provide effectively an open circuit；3. after the method reclaims selenium, the content of selenium in noble metal
Declining to a great extent, the separating-purifying again for noble metal is provided convenience.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart 1.
Detailed description of the invention
Embodiment 1
A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, comprise the steps: to take aqua regia dissolution ammonium chloride repeatedly
During the sedimentation method output containing selenium platinum group metal waste water 2 liters, containing concentration 2.5g/L of selenium platinum group metal Selenium in Wastewater, adjustment contains
Selenium platinum group metal waste water acidity 1.2mol/L, will contain selenium platinum group metal waste water and be warming up to 75 DEG C, by containing in the waste water of selenium platinum group metal
2.5 times of addition sodium sulfitees of the amount of selenium material, are cooled to room temperature after reaction 4h, filter, after filtering residue is washed till neutrality and to selenium
Recovery system, the rate of deposition of selenium is 92%.Filtrate uses zinc replacing process to reclaim noble metal.
Embodiment 2
A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, comprise the steps: to take dichloro diammonium network Asia palladium technique mistake
In journey output containing selenium platinum group metal waste water 3 liters, containing concentration 3g/L of selenium platinum group metal Selenium in Wastewater, adjust the platinum group metal on selenium
Waste water acidity 1.6mol/L, will contain selenium platinum group metal waste water and be warming up to 80 DEG C, by the amount containing selenium platinum group metal Selenium in Wastewater material
2.6 times addition sodium sulfitees, reaction 2h after be cooled to room temperature, filter, after filtering residue is washed till neutrality and to selenium recovery system, selenium
Rate of deposition be 94%.Filtrate uses zinc replacing process to reclaim noble metal.
Embodiment 3
A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, comprise the steps: to take aqua regia dissolution ammonium chloride repeatedly
Sedimentation method process output containing selenium platinum group metal waste water 1 liter, containing concentration 2.5g/L of selenium platinum group metal Selenium in Wastewater, adjust containing selenium
Platinum group metal waste water acidity 1 mol/L, will contain selenium platinum group metal waste water and be warming up to 80 DEG C, by containing selenium platinum group metal Selenium in Wastewater thing
3 times of addition sodium sulfitees of the amount of matter, are cooled to room temperature after reaction 3h, filter, reclaim system after filtering residue is washed till neutrality and to selenium
System, the rate of deposition of selenium is 90%.Filtrate uses zinc replacing process to reclaim noble metal.
Embodiment 4
A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, comprise the steps: to take dichloro diammonium network Asia palladium technique mistake
In journey output containing selenium platinum group metal waste water 2 liters, containing concentration 5g/L of selenium platinum group metal Selenium in Wastewater, adjust the platinum group metal on selenium
Waste water acidity 2mol/L, will contain selenium platinum group metal waste water and be warming up to 85 DEG C, by the amount containing selenium platinum group metal Selenium in Wastewater material
2.7 times add sodium sulfite, are cooled to room temperature, filter after reaction 4h, after filtering residue is washed till neutrality and to selenium recovery system, selenium
Rate of deposition is 92%.Filtrate uses zinc replacing process to reclaim noble metal.
Claims (3)
1. one kind from containing the method reclaiming selenium the waste water of selenium platinum group metal, it is characterised in that comprise the steps:
(1) controlling the waste water feed acidity Han selenium platinum group metal is 1-2mol/L；
(2) selenium platinum group metal waste water feed liquid will be contained and be warming up to 75-85 DEG C, and add sodium sulfite, after reaction 2-4h, be cooled to room
Temperature, filters, and after filtering residue is washed till neutrality and to selenium recovery system, filtrate is stand-by；
(3) filtrate uses metal replacement, chemical precipitation, ion exchange, absorption and electrolytic method to reclaim noble metal.
It is the most according to claim 1 a kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, it is characterised in that: described
The addition of step (2) sulfite hydrogen sodium is containing in the waste water feed liquid of selenium platinum group metal 2.5-3 times of the amount of selenium material.
It is the most according to claim 1 and 2 a kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal, it is characterised in that:
Controlling the waste water feed acidity Han selenium platinum group metal in described step (1) is 1.2-1.6mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738917.0A CN106282575A (en) | 2016-08-29 | 2016-08-29 | A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738917.0A CN106282575A (en) | 2016-08-29 | 2016-08-29 | A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal |
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| CN106282575A true CN106282575A (en) | 2017-01-04 |
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| CN201610738917.0A Pending CN106282575A (en) | 2016-08-29 | 2016-08-29 | A kind of from containing the method reclaiming selenium the waste water of selenium platinum group metal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585746A (en) * | 2017-08-25 | 2018-01-16 | 金川集团股份有限公司 | A kind of method that selenium is reclaimed in the waste liquid from noble metal containing selenium |
| CN112645522A (en) * | 2020-12-11 | 2021-04-13 | 广东先导稀贵金属材料有限公司 | Method for treating selenium-containing wastewater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045962A (en) * | 2006-03-31 | 2007-10-03 | 日矿金属株式会社 | Method of reclaiming platinum from selenium-containing waste liquid using hydrazine |
| CN102358653A (en) * | 2011-10-20 | 2012-02-22 | 铜陵有色金属集团股份有限公司 | Treatment method of selenium-containing wastewater |
| CN102936659A (en) * | 2012-10-31 | 2013-02-20 | 崖巨钊 | Closed-circuit process technique for recovering multiple metals from copper and lead electrolysis anode mud |
| CN103523757A (en) * | 2013-10-31 | 2014-01-22 | 佛山市南海万兴材料科技有限公司 | A processing process for extracting selenium from waste acid water containing cadmium selenium |
| JP2015193888A (en) * | 2014-03-31 | 2015-11-05 | 三菱マテリアル株式会社 | Recovery method of platinum group element |
-
2016
- 2016-08-29 CN CN201610738917.0A patent/CN106282575A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045962A (en) * | 2006-03-31 | 2007-10-03 | 日矿金属株式会社 | Method of reclaiming platinum from selenium-containing waste liquid using hydrazine |
| CN102358653A (en) * | 2011-10-20 | 2012-02-22 | 铜陵有色金属集团股份有限公司 | Treatment method of selenium-containing wastewater |
| CN102936659A (en) * | 2012-10-31 | 2013-02-20 | 崖巨钊 | Closed-circuit process technique for recovering multiple metals from copper and lead electrolysis anode mud |
| CN103523757A (en) * | 2013-10-31 | 2014-01-22 | 佛山市南海万兴材料科技有限公司 | A processing process for extracting selenium from waste acid water containing cadmium selenium |
| JP2015193888A (en) * | 2014-03-31 | 2015-11-05 | 三菱マテリアル株式会社 | Recovery method of platinum group element |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585746A (en) * | 2017-08-25 | 2018-01-16 | 金川集团股份有限公司 | A kind of method that selenium is reclaimed in the waste liquid from noble metal containing selenium |
| CN112645522A (en) * | 2020-12-11 | 2021-04-13 | 广东先导稀贵金属材料有限公司 | Method for treating selenium-containing wastewater |
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