CN104475760A - Production method of carbonyl iron powder - Google Patents
Production method of carbonyl iron powder Download PDFInfo
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- CN104475760A CN104475760A CN201410733206.5A CN201410733206A CN104475760A CN 104475760 A CN104475760 A CN 104475760A CN 201410733206 A CN201410733206 A CN 201410733206A CN 104475760 A CN104475760 A CN 104475760A
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Abstract
The invention relates to a production method of carbonyl iron powder, in particular to a production method of carbonyl iron powder with low carbon content. The production method is characterized in that carbonyl iron vapor and carbon monoxide gas are combined into gas mixture, the gas mixture is introduced in from the upper portion of a decomposer and decomposed into metallic iron, pressure of the decomposer is controlled to be 3 to 15KPa during producing, the interior temperature of the decomposer is controlled to include six temperature zones from top to bottom, the first and second temperature zones are 270 to 310 DEG C, the third and fourth temperature zones are 290 C to 330 DEG C, and the fifth and sixth temperature zones are 250 to 310 DEG C. The production method has the advantages that the parameters such as temperatures of the temperature zones, distribution gradient of the temperature zones and pressures are controlled during composing, and the finished carbonyl iron powder with the carbon content ranging from 0.7% to 0.9% is finally obtained.
Description
Technical field
A kind of production carbonyl iron dust method, particularly a kind of production method of carbonyl iron dust of low carbon content.
Background technology
Carbonyl iron dust a kind ofly has higher degree, powder-product that metals content impurity is low, it has the low feature of tenor relative to other explained hereafter iron powder, and the feature that nonmetallic inclusion can carry out adjusting as required makes this powder be widely used in powder metallurgy industry.Overseas enterprise utilizes carbonyl iron to decompose the carbonyl iron dust preparing low carbon content, but always to this technical know-how, the suitability for industrialized production of domestic this powder unrealized, therefore needs the technique of inventing a kind of low-carbon (LC) carbonyl iron dust.
Summary of the invention
Object of the present invention is exactly the deficiency existed for above-mentioned prior art, provide a kind of can obtain carbon content scope 0.7% ~ 0.9% the production carbonyl iron dust method of iron metal powder.
The object of the invention is to be achieved through the following technical solutions.
A kind of production carbonyl iron dust method, is characterized in that its production process is that carbonyl iron steam and CO gas are formed mist, is passed into by mist by decomposer top, carry out decomposition and generate metallic iron; It is 3 ~ 15KPa that production process controls decomposer pressure, and control decomposer internal temperature and form six sections of temperature band from top to bottom, Qi Zhongyi, two sections of temperature are 270 ~ 310 DEG C, and three, four sections of temperature are 290 ~ 330 DEG C, and five, 6 two sections of temperature are 250 ~ 310 DEG C.
One of the present invention produces carbonyl iron dust method, and it is characterized in that described carbonyl iron steam and CO gas form in mist, the volume ratio of carbonyl iron steam and Co mixed gas is 1:2 ~ 7.
One of the present invention produces carbonyl iron dust method, carries out thermal decomposition to carbonyl iron, controls the technological parameter of decomposable process, the disproportionated reaction of CO is controlled, and forms the carbonyl iron dust of 0.7% ~ 0.9% carbon content.
Detailed description of the invention
A kind of production carbonyl iron dust method, its production process is that carbonyl iron steam and CO gas are formed mist, is passed into by mist by decomposer top, carries out decomposition and generates metallic iron; It is 3 ~ 15KPa that its production process controls decomposer pressure, and control decomposer internal temperature and form six sections of temperature band from top to bottom, Qi Zhongyi, two sections of temperature are 270 ~ 310 DEG C, and three, four sections of temperature are 290 ~ 330 DEG C, and five, 6 two sections of temperature are 250 ~ 310 DEG C.
Carbonyl iron steam in mist enters decomposer, and heat starts to decompose generation metallic iron, and falls from top to bottom in decomposer, in dropping process, and the disproportionated reaction of control CO, thus the content controlling product carbonyl iron dust carbon.
Embodiment 1
Control decomposer and form six temperature sections from top to bottom, Qi Zhongyi, two sections of temperature: 300 ~ 310 DEG C; Three, four sections of temperature: 320 ~ 330 DEG C; Five, six sections of temperature: 260 ~ 300 DEG C.Be that 3500 ~ 4000L/min CO gas passes into mixing channel by flow at the carbonyl iron steam of 1900 ~ 2000L/min and flow, make carbonyl iron steam and CO gas form mist with 1:2 proportioning.Pass in decomposer by this mist again, the pressure maintained in decomposer is 3 ~ 15KPa.Carbonyl iron in mist start to decompose and obtain phosphorus content 0.7% ~ 0.9% carbonyl iron dust.
Embodiment 2
Control decomposer and form six temperature sections from top to bottom, Qi Zhongyi, two sections of temperature: 270 ~ 290 DEG C; Three, four sections of temperature: 290 ~ 310 DEG C; Five, six sections of temperature: 250 ~ 280 DEG C.Be that 7500 ~ 8000L/min CO gas passes into mixing channel by flow at the carbonyl iron steam of 1700 ~ 1800L/min and flow, make carbonyl iron steam and CO gas form mist with 1:4 proportioning.Pass in decomposer by this mist again, the pressure maintained in decomposer is 10.0 ~ 15.0KPa.Carbonyl iron in mist start to decompose and obtain phosphorus content 0.05% ~ 0.11% carbonyl iron dust.
Embodiment 3
Control decomposer and form six temperature sections from top to bottom, Qi Zhongyi, two sections of temperature: 270 ~ 290 DEG C; Three, four sections of temperature: 290 ~ 300 DEG C; Five, six sections of temperature: 260 ~ 280 DEG C.Be that 6000 ~ 6400L/min CO gas passes into mixing channel by flow at the carbonyl iron steam of 1500 ~ 1600L/min and flow, make carbonyl iron steam and CO gas form mist with 1:4 proportioning.Pass in decomposer by this mist again, the pressure maintained in decomposer is 7 ~ 10.0KPa.Carbonyl iron in mist start to decompose and obtain phosphorus content 0.02% ~ 0.06% carbonyl iron dust.
Embodiment 4
Control decomposer and form six temperature sections from top to bottom, Qi Zhongyi, two sections of temperature: 260 ~ 270 DEG C; Three, four sections of temperature: 280 ~ 290 DEG C; Five, six sections of temperature: 240 ~ 250 DEG C.Be that 6000 ~ 6400L/min CO gas passes into mixing channel by flow at the carbonyl iron steam of 1500 ~ 1600L/min and flow, make carbonyl iron steam and CO gas form mist with 1:4 proportioning.Pass in decomposer by this mist again, the pressure maintained in decomposer is 3.0 ~ 6.0KPa.Carbonyl iron in mist start to decompose and obtain phosphorus content 0.7% ~ 0.02% carbonyl iron dust.
Claims (2)
1. produce a carbonyl iron dust method, it is characterized in that its production process is that carbonyl iron steam and CO gas are formed mist, mist is passed into by decomposer top, carry out decomposition and generate metallic iron; It is 3 ~ 15KPa that production process controls decomposer pressure, and control decomposer internal temperature and form six sections of temperature band from top to bottom, Qi Zhongyi, two sections of temperature are 270 ~ 310 DEG C, and three, four sections of temperature are 290 ~ 330 DEG C, and five, 6 two sections of temperature are 250 ~ 310 DEG C.
2. one according to claim 1 produces carbonyl iron dust method, and it is characterized in that described carbonyl iron steam and CO gas form in mist, the volume ratio of carbonyl iron steam and Co mixed gas is 1:2 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410733206.5A CN104475760A (en) | 2014-12-07 | 2014-12-07 | Production method of carbonyl iron powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410733206.5A CN104475760A (en) | 2014-12-07 | 2014-12-07 | Production method of carbonyl iron powder |
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| CN104475760A true CN104475760A (en) | 2015-04-01 |
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| CN201410733206.5A Pending CN104475760A (en) | 2014-12-07 | 2014-12-07 | Production method of carbonyl iron powder |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986806A (en) * | 2015-08-04 | 2015-10-21 | 江苏省冶金设计院有限公司 | Method and system for preparing carbonyl iron powder by utilizing red mud |
| CN105174319A (en) * | 2015-08-04 | 2015-12-23 | 江苏省冶金设计院有限公司 | Method and system for preparation of carbonyl iron powder from red mud |
| CN110844942A (en) * | 2019-11-29 | 2020-02-28 | 山西金池科技开发有限公司 | Process for synthesizing carbonyl iron complex by high-pressure circulation method |
| CN111787685A (en) * | 2020-07-30 | 2020-10-16 | 山东劲拓新材料科技有限公司 | Reflection-type electromagnetic shielding film for FPC and preparation method thereof |
| CN113060768A (en) * | 2020-01-02 | 2021-07-02 | 吉林卓创新材料有限公司 | Preparation method of high-density carbonyl iron 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 |
| CN113059182A (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 magnetic grinding fluid |
Citations (4)
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| DD235246A1 (en) * | 1985-03-20 | 1986-04-30 | Magyar Asvanyolaj Es Foeldgaz | PROCESS FOR REMOVING THE IRON FROM RED MUD AND BAUXITE AND FOR THE PRODUCTION OF IRON PENTACARBONYL |
| CN102070202A (en) * | 2010-11-23 | 2011-05-25 | 金川集团有限公司 | Method for increasing purity of carbonyl iron powder |
| CN102070205A (en) * | 2010-11-23 | 2011-05-25 | 金川集团有限公司 | Preparation method of carbonyl nickel powder |
| CN102718269A (en) * | 2012-06-05 | 2012-10-10 | 金川集团股份有限公司 | Preparation method of carbonyl iron |
-
2014
- 2014-12-07 CN CN201410733206.5A patent/CN104475760A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD235246A1 (en) * | 1985-03-20 | 1986-04-30 | Magyar Asvanyolaj Es Foeldgaz | PROCESS FOR REMOVING THE IRON FROM RED MUD AND BAUXITE AND FOR THE PRODUCTION OF IRON PENTACARBONYL |
| CN102070202A (en) * | 2010-11-23 | 2011-05-25 | 金川集团有限公司 | Method for increasing purity of carbonyl iron powder |
| CN102070205A (en) * | 2010-11-23 | 2011-05-25 | 金川集团有限公司 | Preparation method of carbonyl nickel powder |
| CN102718269A (en) * | 2012-06-05 | 2012-10-10 | 金川集团股份有限公司 | Preparation method of carbonyl iron |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986806A (en) * | 2015-08-04 | 2015-10-21 | 江苏省冶金设计院有限公司 | Method and system for preparing carbonyl iron powder by utilizing red mud |
| CN105174319A (en) * | 2015-08-04 | 2015-12-23 | 江苏省冶金设计院有限公司 | Method and system for preparation of carbonyl iron powder from red mud |
| CN110844942A (en) * | 2019-11-29 | 2020-02-28 | 山西金池科技开发有限公司 | Process for synthesizing carbonyl iron complex by high-pressure circulation method |
| CN110844942B (en) * | 2019-11-29 | 2022-02-18 | 山西金池科技开发有限公司 | Process for synthesizing carbonyl iron complex by high-pressure circulation method |
| CN113060768A (en) * | 2020-01-02 | 2021-07-02 | 吉林卓创新材料有限公司 | Preparation method of high-density carbonyl iron 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 |
| CN113059182A (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 magnetic grinding fluid |
| 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 |
| CN111787685A (en) * | 2020-07-30 | 2020-10-16 | 山东劲拓新材料科技有限公司 | Reflection-type electromagnetic shielding film for FPC and preparation method thereof |
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Application publication date: 20150401 |