CN109663926A - A kind of cochrome powder and preparation method thereof - Google Patents
A kind of cochrome powder and preparation method thereof Download PDFInfo
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- CN109663926A CN109663926A CN201910158442.1A CN201910158442A CN109663926A CN 109663926 A CN109663926 A CN 109663926A CN 201910158442 A CN201910158442 A CN 201910158442A CN 109663926 A CN109663926 A CN 109663926A
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- Prior art keywords
- cochrome
- powder
- cochrome powder
- present
- cobalt
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- 239000000843 powder Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910003470 tongbaite Inorganic materials 0.000 claims abstract description 7
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 6
- 239000010941 cobalt Substances 0.000 claims abstract description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 241000555268 Dendroides Species 0.000 claims abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 239000011651 chromium Substances 0.000 claims abstract description 3
- 239000001301 oxygen Substances 0.000 claims abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims abstract description 3
- 230000009467 reduction Effects 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 229910021446 cobalt carbonate Inorganic materials 0.000 claims description 5
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 238000000889 atomisation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 150000002739 metals Chemical class 0.000 abstract description 3
- 230000029087 digestion Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000004992 fission Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 229910052596 spinel Inorganic materials 0.000 abstract description 2
- 239000011029 spinel Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
-
- B22F1/0003—
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The present invention discloses a kind of cochrome powder and preparation method thereof, and the cochrome powder is dendroid, and by weight percentage, wherein cobalt content accounts for 95-99%, chromium content accounts for 1~5%；The cochrome powder Fisher particle size is between 1.0~1.2 μm, and oxygen content is less than 0.50%, 0.4~0.6g/cm of apparent density3.Yield rate of the present invention is greater than 95%, and traditional atomization yield rate only has 60-70%, and can substantially reduce energy consumption；Oxide spinel cobalt and chromium carbide in production process of the present invention is in high-temperature digestion fission and chemical analysis decomposable process, the crystalline solid to be formed is interpenetrated simultaneously, Elemental redistribution is extensive, voidage is uniform, forming degree is high, the integration of enhancing and other metals, effectively improves the flexural strength and service life of product.
Description
Technical field
The present invention relates to cochrome powder technical field, specifically a kind of cochrome powder and preparation method thereof.
Background technique
Cochrome powder production method is commonly atomization currently on the market, and atomization production cochrome powder disadvantage has:
1, fine powder rate is low (60-70%)；2, product compactness is poor, the decline of product fracture resistance；3, poor with the integration of other metals.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of cochrome powder and its preparation sides
Method.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of cochrome powder, innovative point are: institute
Stating cochrome powder is dendroid, and by weight percentage, wherein cobalt content accounts for 95-99%, chromium content accounts for 1~5%；The cobalt
Evanohm powder Fisher particle size is between 1.0~1.2 μm, and oxygen content is less than 0.50%, 0.4~0.6g/cm of apparent density3。
A kind of preparation method of cochrome powder as claimed in claim, innovative point are, the specific steps are as follows:
(1) it using cobalt carbonate and chromium carbide as raw material, and is sufficiently mixed according to weight percent；
(2) then mixed material being passed through hydrogen and is restored using push boat type reduction furnace, reduction temperature is 450~
500 DEG C, boat charge be 5 kilograms, the recovery time 7 hours, hydrogen flowing quantity 5m3/ h obtains blocky cochrome powder；
(4) nitrogen then is reused again by the blocky cochrome powder obtained after reduction using CO 2 gas-shielded
Sealing and circulating airslide disintegrating mill carries out broken classification and obtains powdered cochrome；
(5) last that powdered cochrome is subjected to mixing conjunction batch again, obtain finished product cochrome powder.
The invention has the following beneficial effects:
Yield rate of the present invention is greater than 95%, and traditional atomization yield rate only has 60-70%, and can substantially reduce energy
Consumption；Oxide spinel cobalt and chromium carbide in production process of the present invention is in high-temperature digestion fission and chemical analysis decomposable process, simultaneously
The crystalline solid to be formed is interpenetrated, Elemental redistribution is extensive, and voidage is uniform, and forming degree is high, the integration of enhancing and other metals,
Effectively improve the flexural strength and service life of product.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are only to explain the present invention, not
For limiting the present invention.
Embodiment 1
A kind of preparation method of cochrome powder, the specific steps are as follows:
(1) according to weight percent, cobalt carbonate 95% and chromium carbide 5% are sufficiently mixed as raw material；
(2) mixed material is then passed through hydrogen using push boat type reduction furnace to restore, reduction temperature 450
DEG C, boat charge be 5 kilograms, the recovery time 7 hours, hydrogen flowing quantity 5m3/ h obtains blocky cochrome powder；
(4) nitrogen then is reused again by the blocky cochrome powder obtained after reduction using CO 2 gas-shielded
Sealing and circulating airslide disintegrating mill carries out broken classification and obtains powdered cochrome；
(5) last that powdered cochrome is subjected to mixing conjunction batch again, obtain finished product cochrome powder.
Embodiment 2
A kind of preparation method of cochrome powder, the specific steps are as follows:
(1) according to weight percent, cobalt carbonate 97% and chromium carbide 3% are sufficiently mixed as raw material；
(2) mixed material is then passed through hydrogen using push boat type reduction furnace to restore, reduction temperature 480
DEG C, boat charge be 5 kilograms, the recovery time 7 hours, hydrogen flowing quantity 5m3/ h obtains blocky cochrome powder；
(4) nitrogen then is reused again by the blocky cochrome powder obtained after reduction using CO 2 gas-shielded
Sealing and circulating airslide disintegrating mill carries out broken classification and obtains powdered cochrome；
(5) last that powdered cochrome is subjected to mixing conjunction batch again, obtain finished product cochrome powder.
Embodiment 3
A kind of preparation method of cochrome powder, the specific steps are as follows:
(1) according to weight percent, cobalt carbonate 99% and chromium carbide 1% are sufficiently mixed as raw material；
(2) mixed material is then passed through hydrogen using push boat type reduction furnace to restore, reduction temperature 500
DEG C, boat charge be 5 kilograms, the recovery time 7 hours, hydrogen flowing quantity 5m3/ h obtains blocky cochrome powder；
(4) nitrogen then is reused again by the blocky cochrome powder obtained after reduction using CO 2 gas-shielded
Sealing and circulating airslide disintegrating mill carries out broken classification and obtains powdered cochrome；
(5) last that powdered cochrome is subjected to mixing conjunction batch again, obtain finished product cochrome powder.
Table one
| Fine powder rate % | Yield rate % | |
| Embodiment 1 | 91 | 97 |
| Embodiment 2 | 93 | 96 |
| Embodiment 3 | 92 | 98 |
As can be seen from the above table, present invention cochrome powder produced has preferable fine powder rate and yield rate, and matter
Amount is better than some cochrome powder in the market.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (2)
1. a kind of cochrome powder, it is characterised in that: the cochrome powder is dendroid, by weight percentage, wherein cobalt
Content accounts for 95-99%, chromium content accounts for 1~5%；For the cochrome powder Fisher particle size between 1.0~1.2 μm, oxygen content is small
In 0.50%, 0.4~0.6g/cm of apparent density3。
2. a kind of preparation method of cochrome powder as described in claim 1, which is characterized in that specific step is as follows:
(1) it using cobalt carbonate and chromium carbide as raw material, and is sufficiently mixed according to weight percent；
(2) mixed material is then passed through hydrogen using push boat type reduction furnace to restore, reduction temperature is 450~500
DEG C, boat charge be 5 kilograms, the recovery time 7 hours, hydrogen flowing quantity 5m3/ h obtains blocky cochrome powder；
(4) it is closed then to reuse nitrogen again by the blocky cochrome powder obtained after reduction using CO 2 gas-shielded
Circulation fluid energy milling machine carries out broken classification and obtains powdered cochrome；
(5) last that powdered cochrome is subjected to mixing conjunction batch again, obtain finished product cochrome powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158442.1A CN109663926A (en) | 2019-03-04 | 2019-03-04 | A kind of cochrome powder and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158442.1A CN109663926A (en) | 2019-03-04 | 2019-03-04 | A kind of cochrome powder and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109663926A true CN109663926A (en) | 2019-04-23 |
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|---|---|---|---|
| CN201910158442.1A Pending CN109663926A (en) | 2019-03-04 | 2019-03-04 | A kind of cochrome powder and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN109663926A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182526A (en) * | 2021-04-22 | 2021-07-30 | 江苏萌达新材料科技有限公司 | Preparation method of reduced nickel diffusion powder |
| CN113199032A (en) * | 2021-04-22 | 2021-08-03 | 江苏萌达新材料科技有限公司 | Preparation method of cobalt powder with low apparent density |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950146A (en) * | 1982-09-08 | 1984-03-23 | ゼネリツク・インダストリ−ズ・インコ−ポレ−テツド | Cobalt chromium dental alloy |
| CN101745644A (en) * | 2010-03-09 | 2010-06-23 | 南京寒锐钴业有限公司 | Method for preparing cobalt powder |
| CN102423806A (en) * | 2011-12-15 | 2012-04-25 | 北京矿冶研究总院 | Preparation method of fine-particle-size cobalt-based alloy powder |
| CN104722778A (en) * | 2013-12-19 | 2015-06-24 | 荆门市格林美新材料有限公司 | Method of synthesizing low-oxygen superfine cobalt powder |
| CN107570723A (en) * | 2017-08-10 | 2018-01-12 | 湖南工业大学 | Method for producing superfine cobalt powder for hard alloy by fluidized reduction of cobalt carbonate and production system thereof |
| CN109128209A (en) * | 2017-06-16 | 2019-01-04 | 荆门市格林美新材料有限公司 | A kind of preparation method of chromium-doped cobalt powder |
-
2019
- 2019-03-04 CN CN201910158442.1A patent/CN109663926A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950146A (en) * | 1982-09-08 | 1984-03-23 | ゼネリツク・インダストリ−ズ・インコ−ポレ−テツド | Cobalt chromium dental alloy |
| CN101745644A (en) * | 2010-03-09 | 2010-06-23 | 南京寒锐钴业有限公司 | Method for preparing cobalt powder |
| CN102423806A (en) * | 2011-12-15 | 2012-04-25 | 北京矿冶研究总院 | Preparation method of fine-particle-size cobalt-based alloy powder |
| CN104722778A (en) * | 2013-12-19 | 2015-06-24 | 荆门市格林美新材料有限公司 | Method of synthesizing low-oxygen superfine cobalt powder |
| CN109128209A (en) * | 2017-06-16 | 2019-01-04 | 荆门市格林美新材料有限公司 | A kind of preparation method of chromium-doped cobalt powder |
| CN107570723A (en) * | 2017-08-10 | 2018-01-12 | 湖南工业大学 | Method for producing superfine cobalt powder for hard alloy by fluidized reduction of cobalt carbonate and production system thereof |
Non-Patent Citations (1)
| Title |
|---|
| 长崎诚三 等: "《二元合金状态图集》", 30 September 2004, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182526A (en) * | 2021-04-22 | 2021-07-30 | 江苏萌达新材料科技有限公司 | Preparation method of reduced nickel diffusion powder |
| CN113199032A (en) * | 2021-04-22 | 2021-08-03 | 江苏萌达新材料科技有限公司 | Preparation method of cobalt powder with low apparent density |
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Application publication date: 20190423 |