CN104588680A - Carbonyl iron decomposition method capable of controlling oxygen content in iron powder - Google Patents
Carbonyl iron decomposition method capable of controlling oxygen content in iron powder Download PDFInfo
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- CN104588680A CN104588680A CN201410733201.2A CN201410733201A CN104588680A CN 104588680 A CN104588680 A CN 104588680A CN 201410733201 A CN201410733201 A CN 201410733201A CN 104588680 A CN104588680 A CN 104588680A
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- carbonyl iron
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- oxygen content
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Abstract
A carbonyl iron decomposition method capable of controlling oxygen content in iron powder relates to the improvement of an iron powder preparation method using carbonyl iron decomposition. The carbonyl iron decomposition method capable of controlling the oxygen content in the iron powder is characterized in that temperature of each section in a carbonyl iron decomposer is controlled at 200-350 DEG C, and the retention time of generated carbonyl iron powder in the decomposer is controlled within 1-3 min. The carbonyl iron decomposition method capable of controlling the oxygen content in the iron powder has the advantages that through controlling the different temperature of each section in the carbonyl iron decomposition equipment decomposer, the oxygen content in a carbonyl iron powder generating process is reduced from the source.
Description
Technical field
Control a decomposition method for oxygen content carbonyl iron in iron powder, relate to a kind of carbonyl iron that adopts and decompose the improvement preparing iron powder method.
Background technology
Adopt carbonyl iron to decompose preparing iron powder process is decomposed in decomposer by carbonyl iron.Along with the application of iron powder is more and more extensive, also more and more higher to the requirement of powder, especially more strict to the requirement of oxygen content in powder, become the index affecting its product quality, the content therefore controlling oxygen in iron powder is very necessary.Therefore improving technique is needed to reduce the content of oxygen in iron powder.
Summary of the invention
Object of the present invention is exactly the quality of the effective guarantee carbonyl iron dust in order to provide a kind of energy, the decomposition method of oxygen content carbonyl iron in the control iron powder of meeting the need of market.
The object of the invention is to be achieved through the following technical solutions,
Control a decomposition method for oxygen content carbonyl iron in iron powder, it is characterized in that the temperature of in control carbonyl iron decomposer each section is at 200-350 DEG C, the time of staying of the carbonyl iron dust that control generates in decomposer is at 1-3min.
A kind of decomposition method controlling oxygen content carbonyl iron in iron powder of the present invention, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 220 DEG C, 235 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 225 DEG C, 220 DEG C, the carbonyl iron dust of generation in decomposer the time of staying be about 1min.
A kind of decomposition method controlling oxygen content carbonyl iron in iron powder of the present invention, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 220 DEG C, 235 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 225 DEG C, 220 DEG C, the carbonyl iron dust of generation is ground time of staying 3min in decomposer.
A kind of decomposition method controlling oxygen content carbonyl iron in iron powder of the present invention, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 240 DEG C, 250 DEG C, 255 DEG C, 260 DEG C, 250 DEG C, 245 DEG C, 240 DEG C, the carbonyl iron dust of generation is ground time of staying 1min in decomposer.
A kind of decomposition method controlling oxygen content carbonyl iron in iron powder of the present invention, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 240 DEG C, 250 DEG C, 255 DEG C, 260 DEG C, 250 DEG C, 245 DEG C, 240 DEG C, the carbonyl iron dust of generation is ground time of staying 3min in decomposer.
A kind of decomposition method controlling oxygen content carbonyl iron in iron powder of the present invention, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 260 DEG C, 285 DEG C, 290 DEG C, 290 DEG C, 285 DEG C, 275 DEG C, 260 DEG C, the carbonyl iron dust of generation is ground time of staying 1min in decomposer.
A kind of decomposition method controlling oxygen content carbonyl iron in iron powder of the present invention, it is characterized in that the seven sections of temperature controlling carbonyl iron decomposer are respectively 260 DEG C, 285 DEG C, 290 DEG C, 290 DEG C, 285 DEG C, 275 DEG C, 260 DEG C, the carbonyl iron dust of generation is ground time of staying 3min in decomposer.
A kind of decomposition method controlling oxygen content carbonyl iron in iron powder of the present invention, to control in decomposer each section of temperature on the impact of decomposable process and the carbonyl iron dust of generation the time of staying in decomposer, reduce the content of oxygen in iron powder, the content of oxygen in iron powder is reduced by control decomposer each section of temperature and the time of staying of carbonyl iron dust in decomposer, be met the iron powder that different field needs, the content of oxygen in carbonyl iron dust can be reduced from source, optimize the character of iron powder, make iron powder can be applied to different fields.
Detailed description of the invention
A kind of decomposition method controlling oxygen content carbonyl iron in iron powder, control the temperature of in carbonyl iron decomposer each section at 200-350 DEG C, control the decomposable process of carbonyl iron under CO atmosphere, the time of staying of the carbonyl iron dust that control generates in decomposer is at 1-3min, oxygen content in iron powder can be changed, adjust the carbonyl iron dust that each section of temperature and temperature distribution gradients can obtain different oxygen content
Embodiment 1
Control carbonyl iron decomposer seven sections of temperature 220 DEG C, 235 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 225 DEG C, 220 DEG C respectively, the carbonyl iron dust of generation in decomposer the time of staying be about 1min, in the iron powder obtained, oxygen content is between 0.12-0.14%.
Embodiment 2
Control carbonyl iron decomposer seven sections of temperature 220 DEG C, 235 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 225 DEG C, 220 DEG C respectively, the carbonyl iron dust of generation in decomposer the time of staying be about 3min, in the iron powder obtained, oxygen content is between 0.25-0.31%.
Embodiment 3
Control carbonyl iron decomposer seven sections of temperature 240 DEG C, 250 DEG C, 255 DEG C, 260 DEG C, 250 DEG C, 245 DEG C, 240 DEG C respectively, the carbonyl iron dust of generation in decomposer the time of staying be about 1min, in the iron powder obtained, oxygen content is between 0.18-0.22%.
Embodiment 4
Control carbonyl iron decomposer seven sections of temperature 240 DEG C, 250 DEG C, 255 DEG C, 260 DEG C, 250 DEG C, 245 DEG C, 240 DEG C respectively, the carbonyl iron dust of generation in decomposer the time of staying be about 3min, in the iron powder obtained, oxygen content is between 0.28-0.34%.
Embodiment 5
Control carbonyl iron decomposer seven sections of temperature 260 DEG C, 285 DEG C, 290 DEG C, 290 DEG C, 285 DEG C, 275 DEG C, 260 DEG C respectively, the carbonyl iron dust of generation in decomposer the time of staying be about 1min, in the iron powder obtained, oxygen content is between 0.38-0.42.
Embodiment 6
Control carbonyl iron decomposer seven sections of temperature 260 DEG C, 285 DEG C, 290 DEG C, 290 DEG C, 285 DEG C, 275 DEG C, 260 DEG C respectively, the carbonyl iron dust of generation in decomposer the time of staying be about 3min, in the iron powder obtained, oxygen content is between 0.48-0.55.
Claims (7)
1. control a decomposition method for oxygen content carbonyl iron in iron powder, it is characterized in that the temperature of in control carbonyl iron decomposer each section is at 200-350 DEG C, the time of staying of the carbonyl iron dust that control generates in decomposer is at 1-3min.
2. a kind of decomposition method controlling oxygen content carbonyl iron in iron powder according to claim 1, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 220 DEG C, 235 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 225 DEG C, 220 DEG C, the carbonyl iron dust of generation in decomposer the time of staying be about 1min.
3. a kind of decomposition method controlling oxygen content carbonyl iron in iron powder according to claim 1, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 220 DEG C, 235 DEG C, 235 DEG C, 230 DEG C, 230 DEG C, 225 DEG C, 220 DEG C, the carbonyl iron dust of generation is ground time of staying 3min in decomposer.
4. a kind of decomposition method controlling oxygen content carbonyl iron in iron powder according to claim 1, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 240 DEG C, 250 DEG C, 255 DEG C, 260 DEG C, 250 DEG C, 245 DEG C, 240 DEG C, the carbonyl iron dust of generation is ground time of staying 1min in decomposer.
5. a kind of decomposition method controlling oxygen content carbonyl iron in iron powder according to claim 1, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 240 DEG C, 250 DEG C, 255 DEG C, 260 DEG C, 250 DEG C, 245 DEG C, 240 DEG C, the carbonyl iron dust of generation is ground time of staying 3min in decomposer.
6. a kind of decomposition method controlling oxygen content carbonyl iron in iron powder according to claim 1, it is characterized in that controlling seven sections of temperature in carbonyl iron decomposer is respectively 260 DEG C, 285 DEG C, 290 DEG C, 290 DEG C, 285 DEG C, 275 DEG C, 260 DEG C, the carbonyl iron dust of generation is ground time of staying 1min in decomposer.
7. a kind of decomposition method controlling oxygen content carbonyl iron in iron powder according to claim 1, it is characterized in that the seven sections of temperature controlling carbonyl iron decomposer are respectively 260 DEG C, 285 DEG C, 290 DEG C, 290 DEG C, 285 DEG C, 275 DEG C, 260 DEG C, the carbonyl iron dust of generation is ground time of staying 3min in decomposer.
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| CN201410733201.2A CN104588680A (en) | 2014-12-07 | 2014-12-07 | Carbonyl iron decomposition method capable of controlling oxygen content in iron powder |
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| CN201410733201.2A CN104588680A (en) | 2014-12-07 | 2014-12-07 | Carbonyl iron decomposition method capable of controlling oxygen content in iron powder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838436A (en) * | 2017-11-17 | 2018-03-27 | 金川集团股份有限公司 | A kind of preparation method of sugar cube shape carbonyl nickel powder |
| CN113059183A (en) * | 2020-01-02 | 2021-07-02 | 吉林卓创新材料有限公司 | Preparation method of carbonyl iron powder special for iron powder core |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3694187A (en) * | 1970-07-07 | 1972-09-26 | Int Nickel Co | Production of carbonyl iron |
| US4652305A (en) * | 1984-07-31 | 1987-03-24 | Basf Aktiengesellschaft | Preparation of iron powder |
| CN1947901A (en) * | 2006-11-24 | 2007-04-18 | 金川集团有限公司 | Method for producing nano-iron powder |
| CN101138793A (en) * | 2006-09-04 | 2008-03-12 | 王兵 | Nanometer powdered iron producing technique |
| CN102910685A (en) * | 2011-08-05 | 2013-02-06 | 陕西兴化化学股份有限公司 | Tubular reactor for pyrolytic process of carbonyl iron powder |
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2014
- 2014-12-07 CN CN201410733201.2A patent/CN104588680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3694187A (en) * | 1970-07-07 | 1972-09-26 | Int Nickel Co | Production of carbonyl iron |
| US4652305A (en) * | 1984-07-31 | 1987-03-24 | Basf Aktiengesellschaft | Preparation of iron powder |
| CN101138793A (en) * | 2006-09-04 | 2008-03-12 | 王兵 | Nanometer powdered iron producing technique |
| CN1947901A (en) * | 2006-11-24 | 2007-04-18 | 金川集团有限公司 | Method for producing nano-iron powder |
| CN102910685A (en) * | 2011-08-05 | 2013-02-06 | 陕西兴化化学股份有限公司 | Tubular reactor for pyrolytic process of carbonyl iron powder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838436A (en) * | 2017-11-17 | 2018-03-27 | 金川集团股份有限公司 | A kind of preparation method of sugar cube shape carbonyl nickel powder |
| CN113059183A (en) * | 2020-01-02 | 2021-07-02 | 吉林卓创新材料有限公司 | Preparation method of carbonyl iron powder special for iron powder core |
| CN113059183B (en) * | 2020-01-02 | 2023-05-19 | 吉林卓创新材料有限公司 | Preparation method of carbonyl iron powder special for iron powder core |
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Application publication date: 20150506 |