CN108655415A - A kind of new process preparing high-purity platinum - Google Patents
A kind of new process preparing high-purity platinum Download PDFInfo
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- CN108655415A CN108655415A CN201810636388.2A CN201810636388A CN108655415A CN 108655415 A CN108655415 A CN 108655415A CN 201810636388 A CN201810636388 A CN 201810636388A CN 108655415 A CN108655415 A CN 108655415A
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- platinum
- purity
- preparing high
- new process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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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
Abstract
The present invention relates to a kind of new processes preparing high-purity platinum, and high-purity platinum powder is arrived using the new method system of hydrochloric acid+dioxygen water dissolution, chlorination ammonia-sinking platinum, combining hydrogen oxidation sodium dissolving+hydrazine hydrate reduction.The present invention uses the dissolving method of hydrochloric acid+hydrogen peroxide, does not bring impurity into, need not catch up with nitre, simplifies technique, substantially reduces energy consumption, reduces enterprise's production cost, and environmental protection.The method that the secondary dissolving of the present invention uses alkali soluble, it is shorter much than traditional aqua regia dissolution reaction time, and nitre need not be caught up with, simplify technique, substantially reduce energy consumption, reduces enterprise's production cost, and environmental protection.
Description
Technical field
The present invention relates to a kind of Chemical Decomposition methods, and in particular to a kind of new process preparing high-purity platinum.
Background technology
There are many method of refining of platinum, and summing up has chlorination carbonyl platinum method, fused salt electrolysis process, zone melting method, chlorination
Ammonium repeated precipitation process, sodium bromate Hydrolyze method, oxidation carrier Hydrolyze method etc..Wherein chlorination carbonyl process, fused salt electrolysis process are due to technique
Process is complicated, cumbersome, its large-scale production and application is made to be restricted.Zone melting method mainly for the production of ultra-pure platinum,
The also seldom application in large-scale industrial production.Sodium bromate Hydrolyze method, oxidation carrier Hydrolyze method solution treatment amount are big and need
Supernatant is stood for a long time, and occupied space place, the production cycle is long, can not also be mass produced.Existing recovery process labor
Fatigue resistance is big, low production efficiency, inconvenient, high energy consumption.
Invention content
The purpose of the present invention is being directed to above-mentioned production technology, using hydrochloric acid+dioxygen water dissolution, chlorination ammonia-sinking platinum,
The new method system of combining hydrogen oxidation sodium dissolving+hydrazine hydrate reduction arrives high-purity platinum powder.
To achieve the above object, technical solution provided by the invention is：
A kind of new process preparing high-purity platinum, it is characterised in that：Include the following steps：
1) levigate：It is levigate that platiniferous material is put into ball mill, is cooled to room temperature, obtains the waste material of minus 200 mesh granularity；
2) acid is molten：According to reactor capacity size, weighs suitable raw material and the salt acid soak of 3~4mol/L is added, add
30% hydrogen peroxide solution is added dropwise to 75 DEG C~85 DEG C of temperature in heat, until having dissolved, filters off insoluble matter.
3) it precipitates：The ammonium chloride that 1~1.5 times of weight of platinum is added carries out heavy platinum, stands and is cooled to room temperature after the completion of precipitation,
Ammonium chloroplatinate is filtered, washed；
4) alkali soluble：Solid sodium hydroxide is added portionwise under stirring, until be completely dissolved, static 10~after twenty minutes
Filter off insoluble matter；
5) it restores：Hydrazine hydrate reduction is added after lysate is heated to 50~60 DEG C and goes out platinum；
6) platinum powder after reduction is filtered, washed, dried.
In step 1), 2000 turns/hour of drum's speed of rotation, Ball-milling Time 30~40 minutes.
In step 5), the reaction time is 0.5~1 hour.
The platinum powder purity of production reaches 99.9995%.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is first levigate by material so that increases contact area when dissolving, improves solution rate.The present invention uses hydrochloric acid
The dissolving method of+hydrogen peroxide, does not bring impurity into, need not catch up with nitre, simplifies technique, substantially reduces energy consumption, reduces enterprise and is produced into
This, and environmental protection.The method that the secondary dissolving of the present invention uses alkali soluble, it is shorter much than traditional aqua regia dissolution reaction time, and be not required to
Nitre is caught up with, technique is simplified, substantially reduces energy consumption, reduces enterprise's production cost, and environmental protection.
Thus the platinum powder purity of technique productions reaches 99.9995%, is existing market highest level.The product is for manufacturing
Labware (crucible, electrode, thermocouple, resistance wire etc.), industrial catalyst, high-precision electronic product, pharmaceuticals industry are for making
Make various antitumor drugs etc..
Specific implementation mode
The present invention is further explained in the light of specific embodiments.
1, levigate.It is levigate that platiniferous material is put into ball mill, is kept for 2000 turns/hour of machine rotational speed, 30~after forty minutes
It shuts down, is cooled to room temperature, produces the waste material for obtaining minus 200 mesh granularity.
2, acid is molten.According to reactor capacity size, weighs suitable raw material and the salt acid soak of 3~4mol/L is added, add
30% hydrogen peroxide solution is added dropwise to 75 DEG C~85 DEG C of temperature in heat, until having dissolved.Filter off insoluble matter.
3, it precipitates.The ammonium chloride that 1~1.5 times of weight of platinum is added carries out heavy platinum, stands and is cooled to room temperature after the completion of precipitation,
Ammonium chloroplatinate is filtered, washed.
4, alkali soluble.Solid sodium hydroxide is added portionwise under stirring, until be completely dissolved, static 10~after twenty minutes
Filter off insoluble matter.
5, hydrazine hydrate reduction is added after lysate being heated to 50~60 degree and goes out platinum, the reaction time is 0.5~1 hour.
6, the platinum powder after reduction is filtered, washed, dried.
Platinum powder obtained is sent to national non-ferrous metal and the detection of electronic material Institute of Analysis, according to relevant criterion,
Platinum powder purity is measured using glow discharge spectrometry and reaches 99.9995%.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, any ripe
Professional and technical personnel is known, without departing from the scope of the present invention, according to the technical essence of the invention, to above real
Apply any simple modification, equivalent replacement and improvement etc. made by example, still fall within technical solution of the present invention protection domain it
It is interior.
Claims (4)
1. a kind of new process preparing high-purity platinum, it is characterised in that：Include the following steps：
1) levigate：It is levigate that platiniferous material is put into ball mill, is cooled to room temperature, obtains the waste material of minus 200 mesh granularity；
2) acid is molten：According to reactor capacity size, weighs suitable raw material and the salt acid soak of 3~4mol/L is added, be heated to
75 DEG C~85 DEG C of temperature, is added dropwise 30% hydrogen peroxide solution, until having dissolved, filters off insoluble matter.
3) it precipitates：The ammonium chloride that 1~1.5 times of weight of platinum is added carries out heavy platinum, stands and is cooled to room temperature after the completion of precipitation, by chlorine
Platinic acid ammonium is filtered, washed；
4) alkali soluble：Solid sodium hydroxide is added portionwise under stirring, until be completely dissolved, static 10~filter off after twenty minutes
Insoluble matter；
5) it restores：Hydrazine hydrate reduction is added after lysate is heated to 50~60 DEG C and goes out platinum；
6) platinum powder after reduction is filtered, washed, dried.
2. the new process according to claim 1 for preparing high-purity platinum, it is characterised in that：In step 1), drum's speed of rotation
2000 turns/hour, Ball-milling Time 30~40 minutes.
3. the new process according to claim 1 for preparing high-purity platinum, it is characterised in that：In step 5), the reaction time 0.5
~1 hour.
4. the new process according to claim 1 for preparing high-purity platinum, it is characterised in that：The platinum powder purity of production reaches
99.9995%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810636388.2A CN108655415A (en) | 2018-06-20 | 2018-06-20 | A kind of new process preparing high-purity platinum |
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| CN201810636388.2A CN108655415A (en) | 2018-06-20 | 2018-06-20 | A kind of new process preparing high-purity platinum |
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| CN201810636388.2A Pending CN108655415A (en) | 2018-06-20 | 2018-06-20 | A kind of new process preparing high-purity platinum |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340377A (en) * | 2018-11-05 | 2019-10-18 | 贵研铂业股份有限公司 | A kind of method that Whote-wet method prepares high-purity platinum powder |
| CN110482618A (en) * | 2019-08-13 | 2019-11-22 | 中船重工黄冈贵金属有限公司 | A kind of synthetic method of no nitre chloroplatinic acid |
| CN111455191A (en) * | 2020-04-02 | 2020-07-28 | 西安宏星电子浆料科技股份有限公司 | High-purity spongy platinum and preparation method and application thereof |
| CN111534700A (en) * | 2020-06-24 | 2020-08-14 | 广东金正龙科技有限公司 | Method for recovering residual precious metals in platinum purification wastewater |
| CN112961986A (en) * | 2021-02-06 | 2021-06-15 | 中海油(山西)贵金属有限公司 | Method for recovering noble metal in platinum online recoverer |
| CN114619040A (en) * | 2022-03-18 | 2022-06-14 | 昆明理工大学 | Method for refining platinum and preparing platinum black |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340377A (en) * | 2018-11-05 | 2019-10-18 | 贵研铂业股份有限公司 | A kind of method that Whote-wet method prepares high-purity platinum powder |
| CN110482618A (en) * | 2019-08-13 | 2019-11-22 | 中船重工黄冈贵金属有限公司 | A kind of synthetic method of no nitre chloroplatinic acid |
| CN111455191A (en) * | 2020-04-02 | 2020-07-28 | 西安宏星电子浆料科技股份有限公司 | High-purity spongy platinum and preparation method and application thereof |
| CN111455191B (en) * | 2020-04-02 | 2022-03-01 | 西安宏星电子浆料科技股份有限公司 | High-purity spongy platinum and preparation method and application thereof |
| CN111534700A (en) * | 2020-06-24 | 2020-08-14 | 广东金正龙科技有限公司 | Method for recovering residual precious metals in platinum purification wastewater |
| CN112961986A (en) * | 2021-02-06 | 2021-06-15 | 中海油(山西)贵金属有限公司 | Method for recovering noble metal in platinum online recoverer |
| CN114619040A (en) * | 2022-03-18 | 2022-06-14 | 昆明理工大学 | Method for refining platinum and preparing platinum black |
| CN114619040B (en) * | 2022-03-18 | 2024-03-26 | 昆明理工大学 | Method for refining platinum and preparing platinum black |
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