CN108349011A - The manufacturing method of the crystal seed of cobalt powder - Google Patents
The manufacturing method of the crystal seed of cobalt powder Download PDFInfo
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- CN108349011A CN108349011A CN201680062357.XA CN201680062357A CN108349011A CN 108349011 A CN108349011 A CN 108349011A CN 201680062357 A CN201680062357 A CN 201680062357A CN 108349011 A CN108349011 A CN 108349011A
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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
- B22F9/26—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions using gaseous reductors
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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
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/15—Nickel or cobalt
-
- 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
- B22F2304/00—Physical aspects of the powder
- B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer
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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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The present invention provides the manufacturing method for efficiently obtaining cobalt powder by the method for improving reduction reaction efficiency when manufacturing cobalt powder by the solution containing sulfuric acid cobalt ammonia complex.The manufacturing method of the crystal seed of cobalt powder, which is characterized in that undergo following processes successively：Both ammonia, the solution of ammoniate or solution of ammonia and ammoniate are added in cobalt sulfate solution and obtain the complexing process of the solution containing sulfuric acid cobalt ammonia complex；Solids is added in the solution containing sulfuric acid cobalt ammonia complex obtained in the complexing process and the mixed processes of mixed slurry are made；The mixed slurry obtained in the mixed processes is packed into reactive tank, hydrogen is blown into reactive tank and restores cobalt contained in mixed slurry, process is precipitated in the reduction for obtaining containing the cobalt powder slurry of cobalt precipitate made of cobalt component is precipitated as cobalt powder on solids surface；The solid-liquid separation process of cobalt precipitate and liquid after reduction is obtained with being separated by solid-liquid separation to the cobalt powder slurry obtained in reduction precipitation process.
Description
Technical field
The present invention relates to the methods for manufacturing cobalt dust by the solution containing sulfuric acid cobalt ammonia complex.More particularly to being tied
The method of the crystal seed used in crystals growth.
Background technology
The known various methods for obtaining the cobalt as electronic material, heat-resisting alloy.In recent years, become the original of battery material etc.
The demand of the cobalt salt class of material is surging.
These cobalt salt classes generally manufacture cobalt dissolving metal in acid, from previous, sheets, the block such as general electrical cobalt
The form of shape is although easily disposed, and the dissolving in acid is extremely slow, on the other hand, although the shape of micropowder is held in acid
It is soluble, but be easy to disperse etc. in disposition there are difficulty, for the strong point both efficiently used, preferably referred to as agglomerate by grain
Or product obtained from powder compacting or sintering.
As the method for obtaining the cobalt button of such small size, powder, it is known that the cobalt of melting is made to disperse in gas or water
And obtain the atomization of fine powder；Cobalt is obtained shown in patent document 1, by making cobalt volatilization, being restored in the gas phase
The dry method such as the CVD method of powder.
In addition, the method for being taken as wet method manufacture cobalt powder, is had and is generated shown in patent document 2, using reducing agent
Method；Shown in patent document 3, by the way that cobalt liquor is sprayed to pass through pyrolysis in a reducing atmosphere at high temperature
Obtain the spray heating decomposition etc. of cobalt powder.
But these methods need price high reagent class, a large amount of energy, therefore as industrially obtaining above-mentioned electricity
The method of a large amount of object amount such as pond material is simultaneously uneconomical.
In addition, make in the method for growth shown in patent document 4, using cobalt dust as crystal seed, due to
PH be make its reaction in 4 acid solutions below, therefore there is the cobalt powder of crystal seed, growth be redissolved and what actual recovery reduced
Project.
In turn, in the cobalt sulfate solution of raw material add sodium hydrate aqueous solution, carry out hydrogen reduction method in, if not
PH4, pH can be maintained to rise, then generate the hydroxide of cobalt, reduction reaction no longer carries out, and there is in reduction reaction for result
The project that efficiency reduces.
On the other hand, shown in non-patent literature 1, in the cobaltous sulfate ammonia complexing for the form that cobalt has been made to ammino-complex
Hydrogen is supplied in object solution the cobalt ions reduction in complex solution to be obtained the method for cobalt powder industrially price is low, is
Useful.
But even this method, due to make particle generate from aqueous solution by wet type reaction and make growth, because
The following topics exist for this：A large amount of nucleus is unevenly generated in the same manner as above-mentioned each prior art, hinders growth.That is, will
The number of the nucleus of derivation controls in range appropriate, growth is expeditiously made to be indispensable.
Therefore, as described above, generally with the following method：In the slurry for making the fine crystallization of referred to as crystal seed coexist on a small quantity
Reducing agent is supplied in material, so that object is grown on the surface of crystal seed, obtains the powder of defined grain size.
The crystal seed of above-mentioned addition is mostly to repeat the processing such as crushing into the part for being about to product and use.But it processes
Effort is needed, is in addition repeated, correspondingly yield reduces, therefore there is lead to the increased project of cost.In turn, if only
It is merely using crushing, there is also the projects such as the crystal seed that may not can stably obtain best grain size, character.
That is, it needs to the method for stably obtaining the crystal seed for crystalline growth.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2005-505695 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2010-242143 bulletins
Patent document 3：No. 4286220 bulletins of Japan Patent
Patent document 4：Japanese Unexamined Patent Application 57-54207 bulletins
Non-patent literature
Non-patent literature 1：“The Manufacture and properties of Metal powder produced
BY the gaseous reduction of aqueous solutions ", Powder metallurgy, No.1/2
(1958), the 40-52 pages.
Invention content
The subject that the invention solves
In such situation, present invention offer passes through raising when manufacturing cobalt powder from the solution containing sulfuric acid cobalt ammonia complex
The method of reduction reaction efficiency efficiently obtains the manufacturing method of cobalt powder.
Solution for solving the problem
The 1st invention for solving the present invention of such project is the manufacturing method of the crystal seed of cobalt powder, which is characterized in that successively
Undergo following processes：Ammonia, the solution of ammoniate or both the solution of ammonia and ammoniate are added in cobalt sulfate solution
And obtain the complexing process of the solution containing sulfuric acid cobalt ammonia complex；What is obtained in above-mentioned complexing process contains cobaltous sulfate ammino
Close the mixed processes that solids is added in the solution of object and mixed slurry is made；The mixed slurry obtained in the mixed processes is filled
Enter in reactive tank, hydrogen is blown into reactive tank and restores cobalt contained in mixed slurry, obtains containing cobalt component as cobalt powder
Process is precipitated in the reduction of the cobalt powder slurry of cobalt precipitate made of being precipitated on solids surface；Next obtained cobalt powder is starched
Material carries out solid-liquid separation treatment and obtains the solid-liquid separation process of liquid after cobalt precipitate and reduction.
The 2nd invention of the present invention for the crystal seed of cobalt powder manufacturing method, which is characterized in that solids in the 1st invention by
It is above-mentioned containing the solution of sulfuric acid cobalt ammonia complex in insoluble or slightly solubility material constitute, average grain diameter is 0.1 μm or more
And 5 μm or less.
The 3rd invention of the present invention is the manufacturing method of the crystal seed of cobalt powder, which is characterized in that containing in the 1st and the 2nd invention
Cobalt concentration in the solution of sulfuric acid cobalt ammonia complex is 75g/L or less.
The 4th invention of the present invention is the manufacturing method of the crystal seed of cobalt powder, which is characterized in that the solid in the 1st to the 3rd invention
Object is nickel powder.
The 5th invention of the present invention is the manufacturing method of the crystal seed of cobalt powder, which is characterized in that the solid-liquid in the 1st to the 4th invention
Separation process has：From cobalt precipitate with the solid-liquid separation treatment that detaches of liquid after reduction and will be obtained in cobalt powder slurry
Cobalt precipitate is separated into the solids separation processing of the solids and the cobalt powder being precipitated on the surface of solids of addition, is formed above-mentioned
Liquid, solids and cobalt powder after reduction.
Invention effect
It can be expeditiously when sulfuric acid cobalt ammonia complex solution reduction is manufactured cobalt powder with hydrogen according to the present invention
Obtain being suitable for adding and being formed as crystal seed in sulfuric acid cobalt ammonia complex solution the crystal seed of the size of cobalt powder.
Description of the drawings
Fig. 1 is the manufacturing flow chart of the manufacturing method of cobalt powder of the present invention.
Specific implementation mode
The present invention expeditiously manufactures when that hydrogen is blown into sulfuric acid cobalt ammonia complex solution and manufactures cobalt powder and adds
The method of crystal seed.
The manufacturing method of the cobalt powder of the present invention is illustrated referring to manufacturing flow chart shown in Fig. 1.The present invention
In, the cobalt sulfate solution by becoming stoste undergoes complexing process, mixed processes, reduction precipitation process, is separated by solid-liquid separation work
Sequence and obtain cobalt powder.
It should be noted that the weight (g) of the obtained cobalt powder of reduction rate described in the present invention divided by the cobaltous sulfate of supply are molten
Ratio obtained from cobalt object amount (g/L) contained in liquid (L) defines.
[complexing process]
The cobalt sulfate solution that can be used in the present invention is not particularly limited, can use will include selected from cobalt and containing
One or more mixtures in the mixed sulfides of cobalt, thick cobaltous sulfate, cobalt oxide, cobalt hydroxide, cobalt carbonate, cobalt powder etc.
The cobalts such as industrial intermediary contain object cobalt leachate obtained from sulfuric acid or ammonia leach dissolving.Further more, industrially usually existing
In above-mentioned cobalt leachate also contain various impurity, above-mentioned leachate generally by implement solvent extraction, ion-exchange,
Impurity element in leachate is removed and is used by the net liquids processes such as neutralization.
Next, adding ammonium hydroxide, ammonium sulfate in above-mentioned cobalt leachate, sulfuric acid cobalt ammonia complex solution is obtained.
Further more, the ammonium sulfate concentrations in solution are preferably set to the range of 10~500g/L.If become 500g/L with
On concentration, then crystallize precipitation sometimes more than solubility, occur operational failure, therefore not preferably.In addition, less than 10g/
The concentration of L less than 10g/L due to by reacting newly-generated ammonium sulfate, being industrially difficult.
In addition, the cobalt concentration in sulfuric acid cobalt ammonia complex solution is set as 75g/L concentration below.This is because in rear work
When adding solids in sequence and making its reaction, if the cobalt concentration in sulfuric acid cobalt ammonia complex solution is excessively high, reacting field is insufficient,
Reduction rate reduces.
[mixed processes]
In the process, the solids of the parent of precipitation is added in the sulfuric acid cobalt ammonia complex solution of above-mentioned making.
As long as the solids of addition for sulfuric acid cobalt ammonia complex solution, ammonium sulfate solution or aqueous slkali be it is insoluble or
The small indissoluble of solubility, then be not particularly limited.
And specifically, it is preferable to use nickel powder.
It is identical as cobalt precipitate if cobalt powder is used for solids, therefore need not remove them in rear process, most
It is suitable as crystal seed, but industrial low price and steadily to obtain fine cobalt powder difficult.
Further more, iron powder has the advantages that price is low, can be readily available, but has and be easy to be dissolved in acid solution, difficulty
The shortcomings that become nucleus.In addition, dissolving iron ion as new pollution the reason of etc. and be not suitable for.
In addition, made in the method that cobalt is precipitated on it using indissoluble or even insoluble solids as in the present invention,
From use that the previous crystal seed generally used makes cobalt be precipitated, that the method for product is made together with crystal seed is different, in the degree that can ignore
On avoid be redissolved influence, a part for product need not also be repeated, therefore have on the substantial equilibrium of technique
Following feature：Cobalt complex ion contained in ammino-complex solution can substantially complete be restored.
Further more, for solids, preferably the gentle shape in surface is so that the cobalt powder being precipitated can efficiently separate, just
For additive amount, as described above, as being necessary with amount more than cobalt amount equivalent present in solution, specifically, by nickel powder
In the case of solids, the addition of 75g/L or more becomes necessary.
[process is precipitated in reduction]
Next, the slurry for adding nickel powder in mixed processes and being formed is packed into the reactive tank of pressure vessel, to this
It is blown into the reducing agents such as hydrogen in reactive tank, the cobalt complex ion in the slurry is restored, cobalt is made to be analysed on the surface of above-mentioned solids
Go out.
The range that preferably 150~200 DEG C of the temperature of mixed slurry at this time, i.e. reaction temperature.If less than 150 DEG C, also
Former efficiency reduces, even if becoming 200 DEG C or more to not influenced if reaction, instead increases the loss of thermal energy etc..
In addition, for the pressure with gap, that is, gas phase portion of solution in reactive tank, preferably by the supply of hydrogen
Maintain the range of 1.0~4.0MPa.If pressure, less than 1.0MPa, the mixed volume of the gas from gas phase portion to solution is few,
Therefore reaction efficiency reduces.On the other hand, even being more than the pressure of 4.0MPa, also without the influence for promoting reaction etc., instead
Only the loss of hydrogen increases, and does not become advantageous.
It should be noted that hydrogen can be blown into the gas phase portion in reactive tank, also can directly be blown into slurry, it is all not related.
[solid-liquid separation process]
Reduction is precipitated to the reduction in the solids and pressure vessel that surface has cobalt precipitate obtained in process
Liquid takes out from pressure vessel together afterwards, is separated by solid-liquid separation with liquid after reduction.
For should being separated by solid-liquid separation, such as use the method for suction filter and filter flask, the method using centrifugal separator, use
The method etc. of filter press.
Next, in the case of using the substance other than cobalt in solids, can be analysed into the cobalt for being about to solids and surface
Go out the operation of object separation.
Specifically, the method detached can by solids and cobalt precipitate give impact etc. bys suitably into
Row.
Further more, the cobalt precipitate of the state containing solids, with solids separation after cobalt precipitate size for
Make crystal seed purposes it is too small in the case of, can repeat to make to above-mentioned mixed processes the size of cobalt precipitate to increase again.
In addition, the solids recycled herein can repeat to use to above-mentioned mixed processes again.
Liquid regenerates ammonia directly or by processing such as heating distillations after reduction, can be as the network of above-mentioned complexing process
Mixture is reused.
Embodiment
The embodiment of the crystal seed to generating the cobalt powder for obtaining the present invention illustrates below.
It should be noted that average grain diameter uses commercially available laser diffraction and scattering formula particle size distribution analyzer
(Microtrac) it measures.
Embodiment 1
25% ammonium hydroxide of 191ml is added in the cobaltous sulfate and ammonium sulfate 330g for being equivalent to cobalt 75g, is dissolved, into one
Successive step is so that total liquid measure has obtained the solution containing sulfuric acid cobalt ammonia complex as 1000ml.
It is added to the nickel powder 75g for 1 μm of the grain size that parent is precipitated in the solution, has obtained mixed slurry.
Next, after above-mentioned mixed slurry being packed into the interior canister of the autoclave of 3 liters of capacity, warming while stirring is arrived
185 DEG C, in the state of holding, it is blown into hydrogen into mixed slurry, the pressure in the interior canister of autoclave is maintained
The mode of 3.5MPa has supplied hydrogen.The supply for stopping hydrogen after sixty minutes is begun to pass through from the supply of hydrogen, by interior canister
It is cooling.
After being cooled to room temperature, the mixed slurry in interior canister is filtered, it will be in the insoluble of the precipitate of Surface Creation cobalt
Body solid takes out, and next uses filter flask and suction filter, is separated by solid-liquid separation by suction strainer.
The reduction reaction rate of cobalt at this time is 99%.
(comparative example 1)
The solution of 25% ammonium hydroxide comprising cobalt 75g and ammonium sulfate 330g and 191ml is obtained, thereto instead of the crystalline substance of the present invention
Kind solids and add concentration 40wt% polyacrylic acid 3.73g as dispersant, be adjusted thus add up to liquid measure at
For 1000ml, the solution containing sulfuric acid cobalt ammonia complex has been made.
It is added to the cobalt powder 75g that parent is precipitated in the solution, has made mixed slurry.
After the mixed slurry of the making being packed into the interior canister of autoclave same as Example 1, warming while stirring
To 185 DEG C, it is blown into hydrogen in the state of holding, is supplied in such a way that the pressure in the interior canister by autoclave maintains 3.5MPa
Hydrogen is given.
The supply for stopping hydrogen after sixty minutes has been begun to pass through from the supply of hydrogen, and interior canister has been cooled down.
After being cooled to room temperature, the mixed slurry in interior canister is filtered, it will be in the insoluble of the precipitate of Surface Creation cobalt
Body solid takes out, and next uses filter flask and suction filter, has carried out the separation of solid and liquid using suction strainer.Cobalt reduction reaction rate at this time
It is 72%, there is no the efficiency as the embodiment of the present invention.
(comparative example 2)
25% ammonium hydroxide of 191ml is added in solution containing ammonium sulfate 330g in the cobalt sulfate solution of cobalt 75g, is adjusted
It is whole so that total liquid measure becomes 1000ml, made the solution containing sulfuric acid cobalt ammonia complex.
In the solution, as the solids dissolved in the solution, the iron powder 75g of 1 μm of commercially available average grain diameter is added,
Mixed slurry is made.
After the mixed slurry of making is packed into the interior canister of autoclave used in embodiment 1, warming while stirring is arrived
185 DEG C, it is blown into hydrogen in the state of holding, is supplied in such a way that the pressure in the interior canister by autoclave is maintained at 3.5MPa
Hydrogen.The supply for stopping hydrogen after sixty minutes is begun to pass through from the supply of hydrogen, and interior canister is cooled down.
After being cooled to room temperature, the mixed slurry in interior canister is filtered, it will be in the iron powder of the precipitate of Surface Creation cobalt
It takes out, next, having carried out the separation of solid and liquid using suction strainer using filter flask and suction filter.
Although the cobalt reduction reaction rate that the comparative example 2 known to is related to is the 76%, situation than having used existing dispersant
Height also there is no the effect as the embodiment of the present invention even if diffluent solids is held in addition.
Claims (5)
1. the manufacturing method of the crystal seed of cobalt powder, which is characterized in that undergo following processes successively：
Both ammonia, the solution of ammoniate or solution of above-mentioned ammonia and ammoniate are added in cobalt sulfate solution and are obtained
To the complexing process of the solution containing sulfuric acid cobalt ammonia complex；
Solids is added in the solution containing sulfuric acid cobalt ammonia complex obtained in above-mentioned complexing process and mixed slurry is made
Mixed processes；
Will the mixed slurry that obtained in above-mentioned mixed processes be packed into reactive tank in, hydrogen is blown into reactive tank and will be in mixed slurry
Contained cobalt reduction obtains the cobalt powder slurry for containing cobalt precipitate made of cobalt component is precipitated as cobalt powder on solids surface
Process is precipitated in reduction；With
Next solid-liquid separation treatment is carried out to obtained cobalt powder slurry and obtains the solid-liquid point of liquid after cobalt precipitate and reduction
From process.
2. the manufacturing method of the crystal seed of cobalt powder according to claim 1, which is characterized in that above-mentioned solids above-mentioned by containing
There is insoluble or slightly solubility material in the solution of sulfuric acid cobalt ammonia complex to constitute, above-mentioned average grain diameter be 0.1 μm or more and 5 μm with
Under.
3. the manufacturing method of the crystal seed of cobalt powder according to claim 1 or 2, which is characterized in that above-mentioned to contain cobaltous sulfate ammonia
Cobalt concentration in the solution of complex compound is 75g/L or less.
4. the manufacturing method of the crystal seed of cobalt powder described in any one of claim 1 to 3, which is characterized in that above-mentioned solid
Object is nickel powder.
5. the manufacturing method of the crystal seed of cobalt powder according to any one of claims 1 to 4, which is characterized in that above-mentioned solid-liquid
Separation process has：From cobalt precipitate with the solid-liquid separation treatment that detaches of liquid after reduction and will be obtained in cobalt powder slurry
Cobalt precipitate is separated into the solids separation processing of the solids and the cobalt powder being precipitated on the surface of above-mentioned solids of addition, is formed
Liquid, solids and cobalt powder after above-mentioned reduction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-210258 | 2015-10-26 | ||
| JP2015210258A JP6350830B2 (en) | 2015-10-26 | 2015-10-26 | Method for producing seed crystal of cobalt powder |
| PCT/JP2016/080690 WO2017073392A1 (en) | 2015-10-26 | 2016-10-17 | Method for producing seed crystal of cobalt powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108349011A true CN108349011A (en) | 2018-07-31 |
Family
ID=58630124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680062357.XA Pending CN108349011A (en) | 2015-10-26 | 2016-10-17 | The manufacturing method of the crystal seed of cobalt powder |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20190061006A1 (en) |
| EP (1) | EP3369499A4 (en) |
| JP (1) | JP6350830B2 (en) |
| CN (1) | CN108349011A (en) |
| AU (1) | AU2016345951B2 (en) |
| CA (1) | CA3003239C (en) |
| PH (1) | PH12018500896B1 (en) |
| WO (1) | WO2017073392A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020183728A1 (en) * | 2019-03-14 | 2020-09-17 | 住友金属鉱山株式会社 | Nickel powder production method |
| CN116199270B (en) * | 2022-12-20 | 2023-08-11 | 科立鑫(珠海)新能源有限公司 | Treatment process for reducing wastewater in cobalt oxide production process |
| CN116177614B (en) * | 2023-03-23 | 2023-11-21 | 科立鑫(珠海)新能源有限公司 | Technological method for reducing waste rate in cobalt oxide preparation process |
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| US5246481A (en) * | 1992-10-26 | 1993-09-21 | Sherritt Gordon Limited | Production of metallic powder |
| CN1171992A (en) * | 1996-05-30 | 1998-02-04 | 北京有色金属研究总院 | Method for preparing nanometre metal powder |
| CN1824438A (en) * | 2006-04-06 | 2006-08-30 | 北京工业大学 | Preparation method of nano-cobalt powder |
| CN101298102A (en) * | 2008-06-13 | 2008-11-05 | 上海师范大学 | Preparation of nano cobalt granule |
| CN101428349A (en) * | 2008-07-29 | 2009-05-13 | 张建玲 | Method for producing nickel-cobalt metal powder |
| CN104439280A (en) * | 2014-12-09 | 2015-03-25 | 英德佳纳金属科技有限公司 | Simultaneous preparing method of cobalt hydroxide and cobalt powder |
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| US3730756A (en) * | 1971-04-28 | 1973-05-01 | Sherritt Gordon Mines Ltd | Method of producing cobalt-coated composite powder |
| US3775098A (en) * | 1971-12-27 | 1973-11-27 | Sherritt Gordon Mines Ltd | Cobalt precipitation from aqueous solutions |
| US4545814A (en) * | 1984-05-23 | 1985-10-08 | Amax Inc. | Production of cobalt and nickel powder |
| US4761177A (en) * | 1987-06-26 | 1988-08-02 | Amax Inc. | Production of cobalt and nickel powder |
| JP6099601B2 (en) * | 2014-02-17 | 2017-03-22 | 国立大学法人高知大学 | Method for producing nickel powder |
-
2015
- 2015-10-26 JP JP2015210258A patent/JP6350830B2/en active Active
-
2016
- 2016-10-17 US US15/770,546 patent/US20190061006A1/en not_active Abandoned
- 2016-10-17 WO PCT/JP2016/080690 patent/WO2017073392A1/en active Application Filing
- 2016-10-17 CN CN201680062357.XA patent/CN108349011A/en active Pending
- 2016-10-17 EP EP16859622.9A patent/EP3369499A4/en not_active Withdrawn
- 2016-10-17 AU AU2016345951A patent/AU2016345951B2/en not_active Ceased
- 2016-10-17 CA CA3003239A patent/CA3003239C/en not_active Expired - Fee Related
-
2018
- 2018-04-26 PH PH12018500896A patent/PH12018500896B1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246481A (en) * | 1992-10-26 | 1993-09-21 | Sherritt Gordon Limited | Production of metallic powder |
| CN1171992A (en) * | 1996-05-30 | 1998-02-04 | 北京有色金属研究总院 | Method for preparing nanometre metal powder |
| CN1824438A (en) * | 2006-04-06 | 2006-08-30 | 北京工业大学 | Preparation method of nano-cobalt powder |
| CN101298102A (en) * | 2008-06-13 | 2008-11-05 | 上海师范大学 | Preparation of nano cobalt granule |
| CN101428349A (en) * | 2008-07-29 | 2009-05-13 | 张建玲 | Method for producing nickel-cobalt metal powder |
| CN104439280A (en) * | 2014-12-09 | 2015-03-25 | 英德佳纳金属科技有限公司 | Simultaneous preparing method of cobalt hydroxide and cobalt powder |
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| W. KUNDA 等: "HE REDUCTION OF COBALT FROM ITS AQUEOUS AMMINE AMMONIUM SULPHATE SYSTEM USING HYDROGEN UNDER PRESSURE", 《HYDROMETALLURGY》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3369499A4 (en) | 2019-03-20 |
| PH12018500896A1 (en) | 2018-10-29 |
| WO2017073392A1 (en) | 2017-05-04 |
| EP3369499A1 (en) | 2018-09-05 |
| US20190061006A1 (en) | 2019-02-28 |
| AU2016345951B2 (en) | 2019-01-17 |
| JP2017082270A (en) | 2017-05-18 |
| AU2016345951A1 (en) | 2018-05-17 |
| CA3003239C (en) | 2019-11-26 |
| CA3003239A1 (en) | 2017-05-04 |
| JP6350830B2 (en) | 2018-07-04 |
| PH12018500896B1 (en) | 2018-10-29 |
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Application publication date: 20180731 |