CN113199032A - Preparation method of cobalt powder with low apparent density - Google Patents
Preparation method of cobalt powder with low apparent density Download PDFInfo
- Publication number
- CN113199032A CN113199032A CN202110432911.1A CN202110432911A CN113199032A CN 113199032 A CN113199032 A CN 113199032A CN 202110432911 A CN202110432911 A CN 202110432911A CN 113199032 A CN113199032 A CN 113199032A
- Authority
- CN
- China
- Prior art keywords
- cobalt powder
- reduction
- apparent density
- low apparent
- crushing
- 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.)
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Links
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000001257 hydrogen Substances 0.000 claims abstract description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 238000012216 screening Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 6
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 6
- 229910021446 cobalt carbonate Inorganic materials 0.000 claims abstract description 6
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 7
- 238000003825 pressing Methods 0.000 abstract description 4
- 239000011800 void material Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
-
- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
Abstract
The invention discloses a preparation method of low apparent density cobalt powder, which comprises the following steps: s1, taking cobalt carbonate as a raw material; s2, introducing hydrogen into a push boat type reduction furnace for reduction at the reduction temperature of 400-500 ℃, the loading amount of the boat is 3-4 kg, the reduction time is 10-16 hours, and the hydrogen flow is 10m3H; s3, protecting the sponge reduced cobalt powder obtained after reduction with carbon dioxide gas; s4, crushing and grading by using a nitrogen closed circulating mechanical crushing and screening machine to obtain powdery cobalt powder; and S5, carrying out batch combination to obtain the finished product of the cobalt powder with low apparent density. The finished product of the invention has small density and large volume, can provide enough volume in some special pouring or pressing processes, does not have excessive influence on the weight ratio of each component in the product, and adopts a nitrogen closed circulating mechanical crushing and screening machine to carry out crushing and gradingThe water content is small, the void degree is high and uniform, so that elements in the product are distributed more uniformly, and the forming degree, the service life and the service performance of the product are effectively improved.
Description
Technical Field
The invention relates to the technical field of cobalt powder, in particular to reduced nickel diffusion powder and a preparation method thereof.
Background
The loose packing density of the cobalt powder on the market is mostly 0.7-1.5g/cm3The disadvantages of such cobalt powders are: 1. the density is too high, and the weight ratio is too high in some special pouring or pressing processes; 2. the internal elements of the product are distributed unevenly, the compression performance is poor, and the folding resistance of the product is reduced; 3. the particle gap is small, and the eutectic property with other metals is poor.
Disclosure of Invention
The invention aims to provide a preparation method of low apparent density cobalt powder, which provides a high-quality raw material for a pouring or pressing process, effectively improves the ductility and compactness of metal and prolongs the service life of the metal, aiming at the defects of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the preparation method of the cobalt powder with low apparent density is characterized by comprising the following steps:
s1, taking cobalt carbonate as a raw material;
s2, introducing hydrogen into a push boat type reduction furnace for reduction, wherein the reduction temperature is 400-500 ℃, the boat loading amount is 3-4 kg, the reduction time is 10-16 hours, and the hydrogen flow is 10m 3/h;
s3, protecting the sponge reduced cobalt powder obtained after reduction with carbon dioxide gas;
s4, crushing and grading by using a nitrogen closed circulating mechanical crushing and screening machine to obtain powdery cobalt powder;
and S5, carrying out batch combination to obtain the finished product of the cobalt powder with low apparent density.
The invention has the beneficial effects that:
the finished product has small density and large volume, can provide enough volume in some special pouring or pressing processes, and does not have excessive influence on the weight ratio of each component in the product. The product is crushed and graded by using a nitrogen closed circulation mechanical crushing and screening machine, the water content is small, the void degree is high and uniform, the compatibility with other metals is improved, the element distribution in the product is more uniform, the forming degree and the service life of the product are effectively improved, and the service performance of the product is obviously improved.
Detailed Description
The present invention will be further described with reference to the following embodiments.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
A preparation method of low apparent density cobalt powder comprises the following steps:
s1, taking cobalt carbonate as a raw material;
s2, introducing hydrogen into the boat-pushing type reduction furnace for reduction at 400 ℃, wherein the boat loading amount is 3 kg, the reduction time is 10 hours, and the hydrogen flow is 10m3/h；
S3, protecting the sponge reduced cobalt powder obtained after reduction with carbon dioxide gas;
s4, crushing and grading by using a nitrogen closed circulating mechanical crushing and screening machine to obtain powdery cobalt powder;
and S5, carrying out batch combination to obtain the finished product of the cobalt powder with low apparent density.
The cobalt powder with low apparent density produced by the method is spherical; the Fisher size is 1.0-1.5 μm, the oxygen content is less than 0.30%, and the apparent density is 0.5-0.7g/cm3(ii) a The particle size distribution D50 is between 8.00 and 15.00 mu m.
Example 2
A preparation method of low apparent density cobalt powder comprises the following steps:
s1, taking cobalt carbonate as a raw material;
s2, introducing hydrogen into the boat-pushing type reduction furnace for reduction at the reduction temperature of 500 ℃, with the boat loading amount of 4 kg and the reduction time of 16 hours, wherein the hydrogen flow is 10m3/h；
S3, protecting the sponge reduced cobalt powder obtained after reduction with carbon dioxide gas;
s4, crushing and grading by using a nitrogen closed circulating mechanical crushing and screening machine to obtain powdery cobalt powder;
and S5, carrying out batch combination to obtain the finished product of the cobalt powder with low apparent density.
The cobalt powder with low apparent density produced by the method is spherical; the Fisher size is 1.0-1.5 μm, the oxygen content is less than 0.30%, and the apparent density is 0.5-0.7g/cm3(ii) a The particle size distribution D50 is between 8.00 and 15.00 mu m.
Example 3
A preparation method of low apparent density cobalt powder comprises the following steps:
s1, taking cobalt carbonate as a raw material;
s2, introducing hydrogen into the boat-pushing type reducing furnace for reduction at the reduction temperature of 450 ℃, the boat loading amount of 3.5 kg and the reduction time of 13 hours, wherein the hydrogen flow is 10m3/h；
S3, protecting the sponge reduced cobalt powder obtained after reduction with carbon dioxide gas;
s4, crushing and grading by using a nitrogen closed circulating mechanical crushing and screening machine to obtain powdery cobalt powder;
and S5, carrying out batch combination to obtain the finished product of the cobalt powder with low apparent density.
The cobalt powder with low apparent density produced by the method is spherical; the Fisher size is 1.0-1.5 μm, the oxygen content is less than 0.30%, and the apparent density is 0.5-0.7g/cm3(ii) a The particle size distribution D50 is between 8.00 and 15.00 mu m.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (1)
1. The preparation method of the cobalt powder with low apparent density is characterized by comprising the following steps:
s1, taking cobalt carbonate as a raw material;
s2, introducing hydrogen into a push boat type reduction furnace for reduction at the reduction temperature of 400-500 ℃, the loading amount of the boat is 3-4 kg, the reduction time is 10-16 hours, and the hydrogen flow is 10m3/h；
S3, protecting the sponge reduced cobalt powder obtained after reduction with carbon dioxide gas;
s4, crushing and grading by using a nitrogen closed circulating mechanical crushing and screening machine to obtain powdery cobalt powder;
and S5, carrying out batch combination to obtain the finished product of the cobalt powder with low apparent density.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432911.1A CN113199032A (en) | 2021-04-22 | 2021-04-22 | Preparation method of cobalt powder with low apparent density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432911.1A CN113199032A (en) | 2021-04-22 | 2021-04-22 | Preparation method of cobalt powder with low apparent density |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113199032A true CN113199032A (en) | 2021-08-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110432911.1A Pending CN113199032A (en) | 2021-04-22 | 2021-04-22 | Preparation method of cobalt powder with low apparent density |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113199032A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108788165A (en) * | 2018-06-15 | 2018-11-13 | 莱芜市泰东粉末科技有限公司 | A method of control low-apparent-density iron powder apparent density |
| CN109663926A (en) * | 2019-03-04 | 2019-04-23 | 江苏萌达新材料科技有限公司 | A kind of cochrome powder and preparation method thereof |
| CN109692969A (en) * | 2019-03-04 | 2019-04-30 | 江苏萌达新材料科技有限公司 | A kind of preparation method of hypoxemia superfine spherical cobalt powder |
| CN111496263A (en) * | 2020-04-27 | 2020-08-07 | 江苏萌达新材料科技有限公司 | Method for reducing iron-cobalt-copper alloy powder bulk ratio |
| CN111570784A (en) * | 2020-04-27 | 2020-08-25 | 江苏萌达新材料科技有限公司 | Preparation method of iron-copper alloy diffusion powder |
| CN111702184A (en) * | 2020-06-30 | 2020-09-25 | 荆门市格林美新材料有限公司 | Preparation method of large FSSS cobalt powder |
| CN111922355A (en) * | 2020-06-30 | 2020-11-13 | 荆门市格林美新材料有限公司 | Preparation method of superfine cobalt powder |
-
2021
- 2021-04-22 CN CN202110432911.1A patent/CN113199032A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108788165A (en) * | 2018-06-15 | 2018-11-13 | 莱芜市泰东粉末科技有限公司 | A method of control low-apparent-density iron powder apparent density |
| CN109663926A (en) * | 2019-03-04 | 2019-04-23 | 江苏萌达新材料科技有限公司 | A kind of cochrome powder and preparation method thereof |
| CN109692969A (en) * | 2019-03-04 | 2019-04-30 | 江苏萌达新材料科技有限公司 | A kind of preparation method of hypoxemia superfine spherical cobalt powder |
| CN111496263A (en) * | 2020-04-27 | 2020-08-07 | 江苏萌达新材料科技有限公司 | Method for reducing iron-cobalt-copper alloy powder bulk ratio |
| CN111570784A (en) * | 2020-04-27 | 2020-08-25 | 江苏萌达新材料科技有限公司 | Preparation method of iron-copper alloy diffusion powder |
| CN111702184A (en) * | 2020-06-30 | 2020-09-25 | 荆门市格林美新材料有限公司 | Preparation method of large FSSS cobalt powder |
| CN111922355A (en) * | 2020-06-30 | 2020-11-13 | 荆门市格林美新材料有限公司 | Preparation method of superfine cobalt powder |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210803 |