CN106086450A - A kind of polystyrene 4 methylthiazol sulfoxide resin separation iridium, the method for platinum - Google Patents
A kind of polystyrene 4 methylthiazol sulfoxide resin separation iridium, the method for platinum Download PDFInfo
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- CN106086450A CN106086450A CN201610575597.1A CN201610575597A CN106086450A CN 106086450 A CN106086450 A CN 106086450A CN 201610575597 A CN201610575597 A CN 201610575597A CN 106086450 A CN106086450 A CN 106086450A
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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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
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- 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
Abstract
The present invention discloses a kind of polystyrene 4 methylthiazol sulfoxide resin separation iridium, the method for platinum, belong to platinum group metal separation technology field, the present invention with polystyrene 4 methylthiazol sulfoxide resin (be called for short PS 4 MTS) as adsorbent, the Ir (IV) in 0.1～0.5mol/L hydrochloric acid medium is adsorbed by solid-to-liquid ratio 1:50 (g/mL), Ir in Ir, Pt mixed solution is adsorbed by PS 4 MTS, and Pt is retained in aqueous phase, with the Ir on 0.5%～1%NaOH solution stripping resin.The present invention utilizes PS 4 MTS adsorbent to the difference of Ir, Pt adsorptivity to separate Ir, Pt, and operating process is simple, environmental friendliness, and Ir, Pt separation is high, and PS 4 MTS adsorbent good stability is reusable.
Description
Technical field
The present invention relates to one polystyrene-4-methylthiazol sulfoxide resin (be called for short PS-4-MTS) and separate iridium, platinum
Method, a kind of selectivity is high and adsorption capacity is big efficient iridium, the new method of platinum adsorbing separation.Belong to precious metals metallurgy neck
Territory.
Background technology
Iridium, platinum are the elements that in platinum group metal, stability is high, even at hot environment, also will not send out because of oxidation
The obvious change of biochemical character.Just because of this premium properties, iridium, platinum often make platinumiridio, be widely used in aviation,
The industry such as space flight, telecommunications.Due to iridium, the rareness of platinum resource, its price costly, therefore, from secondary resource reclaim iridium,
Platinum has the highest researching value and economic worth.Iridium, platinum chemical property are quite similar, and the existence in acid medium is changeable
Quantivalence, therefore, iridium, platinum separate a focus of always platinum group metal emtallurgy research.Iridium, platinum separating technology technology master at present
Have: solvent extraction, Hydrolyze method, ammonium chloride-ammonium sulfide method.It is not enough that these methods are respectively arranged with it: solvent extraction is inapplicable dilute
Solution is additionally, due to use substantial amounts of organic solvent, the biggest to environmental hazard.Hydrolyze method, ammonium chloride-ammonium sulfide method are mutual
Carry secretly, processing step is many, the production cycle is long, and iridium direct yield is less than 70%, and the direct yield of platinum is also less than 85%.
In recent years, absorption method is few because of its separating step, and equipment investment is little, and operating process is simple, environmental friendliness and the suitableeest
The separation of low content component in weak solution and paid close attention to widely.Absorption method it is critical only that prepare high-adsorption-capacity and
There is high selective adsorbent.Activated carbon, biological adsorption agent, inorganic material adsorbent etc. have been used for the concentration and separation of iridium, platinum
Research.But it is exactly that selectivity is poor that these adsorbents used all exist the problem of a general character, therefore absorption method separates
Iridium, platinum do not obtain industrial scale applications so far.
Summary of the invention
The purpose of the present invention is aiming at having separated iridium, the deficiency of platinum adsorbing material, proposes a kind of selectivity height and inhales
Efficient iridium that attached capacity is big, the new method of platinum adsorbing separation, can realize the high Selective Separation of iridium, platinum in iridium, platinum mixed liquor, tool
There is obvious practical value.
The present invention is completed by following technical proposal, it is characterised in that with (the letter of polystyrene-4-methylthiazol sulfoxide resin
PS-4-MTS) it is called adsorbent, the Ir (IV) in 0.1～0.5mol/L hydrochloric acid medium, PS-is adsorbed by solid-to-liquid ratio 1:50 (g/mL)
Ir in Ir, Pt mixed solution is adsorbed by 4-MTS, and Pt is retained in aqueous phase, with 0.5%～1%NaOH solution stripping resin
On Ir, it is achieved the recycling of PS-4-MTS；
In above-mentioned steps, PS-4-MTS structural formula is:
Above technical scheme concrete steps include following:
(1) preparation aqueous phase: with the H of dilute hydrochloric acid solution regulation Ir and the Pt mixed liquor of debita spissitudo+Concentration, makes compound
The H of liquid+Concentration is 0.1～0.5mol/L, and adds appropriate K2S2O8Solution, controlling Ir oxidation number in mixed liquor is+4；
(2) take the PS-4-MTS of certain mass by solid-to-liquid ratio 1:50 (g/mL), add people to containing in Ir and Pt mixed solution, stir
Mix or vibrate 30～60min, leaching the resin of load Ir；
(3) PS-4-MTS of above step (2) absorption carriage Ir is taken, with 0.5%～1%NaOH solution, by solid-to-liquid ratio 1:
20 (g/mL), stirring or duration of oscillation are the Ir on 20-30min desorbing resin.
(4) take the PS-4-MTS after above step (3) desorbing, with distilled water wash 2 times, return step (2), again adsorb
Same Ir and Pt mixed solution, it is achieved the recycling of PS-4-MTS.
In described step (2) Ir and Pt mixed solution, the concentration that concentration is 20-1600mg/L, Pt of Ir is 50-1200mg/
L。
Described step (2) is further for measuring the concentration of Ir Yu Pt in aqueous phase, and the amount of PS-4-MTS upper absorption Ir Yu Pt is used
Minusing is obtained, and calculates adsorption rate and separation.
Described step (3) is further for measuring the concentration of Ir in stripping liquid, and calculates the desorption efficiency of NaOH solution desorbing Ir.
The present invention has the following advantages
1.Ir, Pt separation is high, β(Ir/Pt)>104, it is achieved that iridium, the high Selective Separation of platinum.
2. optimal adsorption acidity 0.1～0.5mol/L Low acid scope, little to equipment corrosion, beneficially industry is put
Greatly.
3.PS-4-MTS can be recycled, low cost.
Detailed description of the invention
Below in conjunction with embodiment, the method for the present invention is described further.
Embodiment 1
Weighing 2.0g resin and make fixing phase, joining C (HCl) is 0.5mol/L, through K2S2O8Solution oxide processes
100mL concentration is in Ir (IV) solution of 8500mg/L, and vibrate 60min, leaches the PS-4-MTS of load；Measure Ir adsorbance,
The resin leaching load Ir adding people in 40mL 1%NaOH solution, vibrate 30min, leaches the PS-4-MTS in stripping liquid,
By PS-4-MTS distilled water wash 2 times, again adsorb same Ir (IV) solution, measure 6 circulation static capacity numbers
Value.
Advantage of the present invention, can find out from above-mentioned experiment, measurement result such as table 1 institute of 6 circulation static capacity
Show:
Table 1. circulates the mensuration of static capacity
| Cycle-index | 1 | 2 | 3 | 4 | 5 | 6 |
| Static capacity (mg/g) | 80.5 | 80.2 | 80.1 | 80.0 | 79.8 | 79.6 |
As it can be seen from table 1 recycle through 6 times, PS-4-MTS is the brightest to the static capacity of Ir (IV)
Aobvious reduction, PS-4-MTS has high stability, can recycle repeatedly.
Embodiment 2
1. weighing 1.0gPS-4-MTS and make fixing phase, joining C (HCl) is 0.1mol/L, through K2S2O8Contain after solution oxide
In the 50mL mixed liquor of Ir and Pt, in this mixed liquor, the content of Ir and Pt is respectively 20mg/L and 50mg/L, vibration
30min, leaches the PS-4-MTS of load；Measure Ir adsorbance be 0.99mg/g.Ir and Pt separation be 4.9 × 104(concrete
Data are shown in Table 2).
2. adding in people's 20mL 0.5%NaOH solution by the PS-4-MTS leaching load Ir, vibrate 20min, leaches stripping liquid
In PS-4-MTS.Measure the content of Ir in stripping liquid, calculate desorption efficiency (concrete data are shown in Table 2).
Embodiment 3
1. weighing 2.0gPS-4-MTS and make fixing phase, joining C (HCl) is 0.2mol/L, through K2S2O8Contain after solution oxide
In the 100mL mixed liquor of Ir and Pt, in this mixed liquor, the content of Ir and Pt is respectively 110mg/L and 160mg/L, vibration
30min, leaches the PS-4-MTS of load；Measure Ir adsorbance be 5.45mg/g.Ir and Pt separation be 1.7 × 104(concrete
Data are shown in Table 2).
2. adding in people's 40mL 0.5%NaOH solution by the PS-4-MTS leaching load Ir, vibrate 25min, leaches stripping liquid
In PS-4-MTS.Measure the content of Ir in stripping liquid, calculate desorption efficiency (concrete data are shown in Table 2).
Embodiment 4
1. weighing 2.0gPS-4-MTS and make fixing phase, joining C (HCl) is 0.3mol/L, through K2S2O8Contain after solution oxide
In the 100mL mixed liquor of Ir and Pt, in this mixed liquor, the content of Ir and Pt is respectively 450mg/L and 875mg/L, vibration
30min, leaches the PS-4-MTS of load；Measure Ir adsorbance be 22.35mg/g.Ir and Pt separation be 2.6 × 104(tool
Volume data is shown in Table 2).
2. adding in people's 40mL 0.6%NaOH solution by the PS-4-MTS leaching load Ir, vibrate 25min, leaches stripping liquid
In PS-4-MTS.Measure the content of Ir in stripping liquid, calculate desorption efficiency (concrete data are shown in Table 2).
Embodiment 5
1. weighing 3.0gPS-4-MTS and make fixing phase, joining C (HCl) is 0.4mol/L, through K2S2O8Contain after solution oxide
In the 150mL mixed liquor of Ir and Pt, in this mixed liquor, the content of Ir and Pt is respectively 860mg/L and 650mg/L, vibration
40min, leaches load P S-4-MTS；Measure Ir adsorbance be 42.75mg/g, Ir and Pt separation be 2.8 × 104(concrete
Data are shown in Table 2).
2. adding in people's 60mL 0.7%NaOH solution by the PS-4-MTS leaching load Ir, vibrate 30min, leaches stripping liquid
In PS-4-MTS.Measure the content of Ir in stripping liquid, calculate desorption efficiency (concrete data are shown in Table 2).
Embodiment 6
1. weighing 4.0g PS-4-MTS and make fixing phase, joining C (HCl) is 0.5mol/L, through K2S2O8After solution oxide
In 200mL mixed liquor containing Ir and Pt, in this mixed liquor, the content of Ir and Pt is respectively 1245mg/L and 518mg/L, shakes
Swing 50min, leach the PS-4-MTS of load；Measure Ir adsorbance be 61.7mg/g.Ir and Pt separation be 1.9 × 104(tool
Volume data is shown in Table 2).
2. adding in people's 80mL 0.8%NaOH solution by the PS-4-MTS leaching load Ir, vibrate 30min, leaches stripping liquid
In PS-4-MTS.Measure the content of Ir in stripping liquid, calculate desorption efficiency (concrete data are shown in Table 2).
Embodiment 7
1. weighing 3.0gPS-4-MTS and make fixing phase, joining C (HCl) is 0.5mol/L, through K2S2O8Contain after solution oxide
In the 150mL mixed liquor of Ir and Pt, in this mixed liquor, the content of Ir and Pt is respectively 1600mg/L and 1200mg/L, vibration
60min, leaches the PS-4-MTS of load；Measure Ir adsorbance be 79.4mg/g.Ir and Pt separation be 2.5 × 104(concrete
Data are shown in Table 2)
2. adding in people's 60mL 1%NaOH solution by the PS-4-MTS leaching load Ir, vibrate 30min, leaches in stripping liquid
PS-4-MTS.Measure the content of Ir in stripping liquid, calculate desorption efficiency (concrete data are shown in Table 2).
PS-4-MTS adsorbing separation Ir, the effect of Pt in the hydrochloric acid medium of table 2. 0.1～0.5mol/L
Ir, Pt are had good in the hydrochloric acid medium of 0.1～0.5mol/L by the PS-4-MTS of the present invention as can be seen from Table 2
Good adsorbing separation effect, with the Ir of absorption on 0.5%～1%NaOH solution energy desorbing PS-4-MTS completely, the one 2-7 real
Execute example Ir, Pt separation equal > 104, it is achieved that Ir, Pt efficiently separate.
Claims (5)
1. one kind by polystyrene-4-methylthiazol sulfoxide resin separation iridium, the method for platinum, it is characterised in that with PS-4-MTS be
Adsorbent, is adsorbed the Ir (IV) in 0.1～0.5mol/L hydrochloric acid medium by solid-to-liquid ratio 1:50 (g/mL), and PS-4-MTS is by Pt, Ir
Ir absorption in mixed solution, and Pt is retained in aqueous phase, with the Ir on 0.5%～1%NaOH solution stripping resin；After desorbing
Obtain PS-4-MTS, again adsorb same Ir and Pt mixed solution, the recycling of PS-4-MTS can be realized；
The structural formula of polystyrene-4-methylthiazol sulfoxide resin (being called for short PS-4-MTS) is:
Method the most according to claim 1, it is characterised in that specifically include following steps:
(1) preparation aqueous phase: with the H of dilute hydrochloric acid solution regulation Ir and the Pt mixed liquor of debita spissitudo+Concentration, makes the H of mixed liquor+Concentration is 0.1～0.5mol/L, and adds appropriate K2S2O8Solution, it is ensured that in mixed liquor, Ir oxidation number is+4；
(2) take the PS-4-MTS of certain mass by solid-to-liquid ratio 1:50 (g/mL), join containing in Ir and Pt mixed solution, stirring or
Vibration 30～60min, leaches the resin of load Ir；
(3) PS-4-MTS of above step (2) absorption carriage Ir is taken, with 0.5%～1%NaOH solution, by solid-to-liquid ratio 1:20 (g/
ML), stir or vibrate 20-30min, the Ir on desorbing resin；
(4) taking the PS-4-MTS after above step (3) desorbing, with distilled water wash 2 times, return step (2), absorption is same again
Ir and Pt mixed solution, it is achieved the recycling of PS-4-MTS.
Method the most according to claim 2, it is characterised in that in step (2) Ir and Pt mixed solution, the concentration of Ir is 20-
The concentration of 1600mg/L, Pt is 50-1200mg/L.
Method the most according to claim 2, it is characterised in that step (2) is the dense of Ir with Pt in mensuration aqueous phase further
Degree, the amount minusing that resin adsorbs Ir with Pt is obtained, and is calculated Ir, Pt adsorbance and Ir, Pt separation.
Method the most according to claim 2, it is characterised in that step (3) is the dense of Ir in mensuration stripping liquid further
Degree, and calculate the desorption efficiency of NaOH solution desorbing Ir.
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|---|---|---|---|
| CN201610575597.1A CN106086450B (en) | 2016-07-21 | 2016-07-21 | A kind of method that iridium, platinum are separated with the methylthiazol sulfoxide resin of polystyrene 4 |
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| CN201610575597.1A CN106086450B (en) | 2016-07-21 | 2016-07-21 | A kind of method that iridium, platinum are separated with the methylthiazol sulfoxide resin of polystyrene 4 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107488790A (en) * | 2017-08-11 | 2017-12-19 | 云南大学 | With the copolymer adsorbing separation palladium of aniline and the methoxy benzoic acid of 2 amino 6, platinum, rhodium method |
| CN108579695A (en) * | 2018-01-22 | 2018-09-28 | 江苏欣诺科催化剂有限公司 | A kind of adsorbent and desorption method of absorption iridium |
| CN110578063A (en) * | 2019-10-21 | 2019-12-17 | 云南大学 | Method for separating and extracting palladium by using polystyrene-benzoxazole thioether resin |
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| CN1400322A (en) * | 2002-09-05 | 2003-03-05 | 北京矿冶研究总院 | Method for separating platinum, palladium and iridium |
| CN104263936A (en) * | 2014-08-18 | 2015-01-07 | 中国科学院长春应用化学研究所 | Method for separating and recovering precious metals |
| CN104774187A (en) * | 2015-04-30 | 2015-07-15 | 云南大学 | 2-(hexyl sulfinyl) benzoxazole, preparation method thereof and method for extracting and separating iridium and rhodium with the same |
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2016
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1400322A (en) * | 2002-09-05 | 2003-03-05 | 北京矿冶研究总院 | Method for separating platinum, palladium and iridium |
| CN104263936A (en) * | 2014-08-18 | 2015-01-07 | 中国科学院长春应用化学研究所 | Method for separating and recovering precious metals |
| CN104774187A (en) * | 2015-04-30 | 2015-07-15 | 云南大学 | 2-(hexyl sulfinyl) benzoxazole, preparation method thereof and method for extracting and separating iridium and rhodium with the same |
Non-Patent Citations (1)
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| 张凯等: "用刚果红离子缔合负载形成树脂分离Rh、Ir、Pt、Pd、Au的研究", 《分析试验室》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107488790A (en) * | 2017-08-11 | 2017-12-19 | 云南大学 | With the copolymer adsorbing separation palladium of aniline and the methoxy benzoic acid of 2 amino 6, platinum, rhodium method |
| CN107488790B (en) * | 2017-08-11 | 2019-04-12 | 云南大学 | With the method for the copolymer adsorbing separation palladium of aniline and 2- amino -6- methoxy benzoic acid, platinum, rhodium |
| CN108579695A (en) * | 2018-01-22 | 2018-09-28 | 江苏欣诺科催化剂有限公司 | A kind of adsorbent and desorption method of absorption iridium |
| CN110578063A (en) * | 2019-10-21 | 2019-12-17 | 云南大学 | Method for separating and extracting palladium by using polystyrene-benzoxazole thioether resin |
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