CN1521219A - Production of nm- pigments and nm- magnetic materials using ferric oxide - Google Patents
Production of nm- pigments and nm- magnetic materials using ferric oxide Download PDFInfo
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- CN1521219A CN1521219A CNA021456801A CN02145680A CN1521219A CN 1521219 A CN1521219 A CN 1521219A CN A021456801 A CNA021456801 A CN A021456801A CN 02145680 A CN02145680 A CN 02145680A CN 1521219 A CN1521219 A CN 1521219A
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Abstract
The present invention relates to the technology and technological process of utilizing ferric oxide from hot processing of iron and steel to prepare nano pigment and nano magnetic material. Ferric oxide is used as main material to produce oxidation and reduction via adding hydrochloric acid, sodium hydroxide, oxidant and additive to prepare nano iron oxide red, nano iron oxide yellow, nano iron oxide black and nano magnetic material. The nano pigment may be used in paint, print ink, plastic, food, medicine, cosmetics, building material, etc.; and the nano magnetic material may be used for various electric and magnetic products in automobile, computer, aeronautic and astronautic, etc. The preparation process of the present invention is simple, low in cost and wide in application.
Description
The invention relates to a technology and a process method for preparing a nano pigment and a nano magnetic material by iron and steel hot working iron oxide. At present, the pigment and the magnetic material in the markets at home and abroad are mainly prepared into micron-sized common pigment and magnetic material by a mechanical method, while the nano-sized pigment and the magnetic material are mainly imported from abroad, and if a chemical technology and a chemical process method are adopted, the particle size of the pigment and the magnetic material can reach the nano-scale. Iron oxide resources for hot processing of steel in China are rich, the annual steel yield in China is 1.6 million tons at present, and the annual iron oxide resources can reach 192 million tons and about 200 million tons according to 1.2 percent of iron oxide per ton. The 'homogeneous fluid method for preparing iron oxidered' disclosed in chinese patent CN1334295A introduces the characteristics of the method for preparing iron oxide red, but does not relate to the preparation of iron oxide black, iron oxide yellow and magnetic materials, and the preparation technology and process of iron oxide red are not specifically described, nor do the specification relate to the technology and process of using dispersant and surfactant. The patent content is therefore simple and difficult to handle.
The invention aims to provide a technology and a process method for preparing nano pigment and nano magnetic material by iron and steel hot processing iron oxide.
The purpose of the invention is realized as follows:
first, process method
The process for preparing nano pigment and nano magnetic material by using iron oxide is described in the attached drawing of the specification
Second, technical method (recipe)
The iron and steel hot-working iron scale is ferroferric oxide (Fe)3O4) Iron oxide (Fe)2O3) And iron monoxide (FeO), and the preparation method comprises the following steps:
preparation of nano iron oxide red (Fe)2O3) And magnetic powder (gamma. Fe)2O3) By the technical means of
(1) Technical method for preparing nano iron oxide red and magnetic powder from iron oxide scales of continuous casting, hot rolling, forging, wire drawing and the like
(2) Technical method for preparing nano iron oxide red and magnetic powder by pickling equal iron scale
The invention has the beneficial effects that the iron oxide is thermally processed by steel to prepare the nano pigment and the nano magnetic material, so that the resources can be fully utilized twice, and the waste is changed into valuable. But also can produce high value-added products to replace foreign imported products, meet the domestic market demand and export the foreign; meanwhile, the quality of a large amount of domestic materials and products can be promoted to be rapidly improved, the enterprise cost is reduced, the technological progress is promoted, and the economic benefit and the social benefit of the enterprise are improved. The nanometer pigment has light scattering and absorbing performance different from that of common pigment, bright coloring performance, high light resistance and high weather resistance. Meanwhile, the ultraviolet light absorbing and shielding film has the functions of absorbing and shielding ultraviolet light, and various electric, optical, magnetic and thermal surface effects, volume effects, quantum size effects and macroscopic quantum tunneling effects. Can be used in coating, printing ink, plastic, food, medicine, cosmetic, etc.; the nano magnetic material can be used for various electric and magnetic products such as automobiles, computers, aerospace, microwaves, magnetic tapes, civil electric appliances, medical appliances and the like. The nano pigment and the nano magnetic material have the advantages of simple preparation process, low cost, no pollution and wide application.
Examples 1,
(1) Nano iron oxide red (Fe)2O3) And magnetic powder (gamma. Fe)2O3) Preparation technique (formula)
(2) Nano iron oxide (Fe)2O3) And magnetic powder (gamma. Fe)2O3) Preparation process method
Nano iron oxide (Fe)2O3) And magnetic powder (gamma. Fe)2O3) Preparation ofThe technical method is shown in the attached drawings of the specification
(II) preparing nano iron oxide black (Fe)3O4) And nano magnetic iron oxide (Fe)3O4) Technical method (formulation)
(1) Technical method for preparing nano iron oxide black and nano magnetic iron oxide from iron oxide scales of continuous casting, hot rolling, forging, wire drawing and the like
(2) Technical method for preparing nano iron oxide black and nano magnetic iron oxide by pickling equal iron scale
Examples 2,
(1) Nano iron oxide black (Fe)3O4) And nano magnetic iron oxide (Fe)3O4) Preparation technique (formula)
(2) Nano iron oxide black (Fe)3O4) And nano magnetic oxidationIron (Fe)3O4) Preparation process method
The preparation method is the same as that of example 1
(III) preparation of Nano iron oxide yellow (Fe)2O3·H2O) technical method (formula)
(1) Technical method for preparing nano iron oxide yellow from iron oxide scales of continuous casting, hot rolling, forging, wire drawing and the like
(2) Technical method for preparing nano iron oxide yellow by pickling equal iron scale
Examples 3,
(1) Nano iron oxide yellow (Fe)2O3·H2O) preparation technique (formula)
(2) Nano iron oxide yellow (Fe)2O3·H2O) preparation process
The preparation method is the same as that of example 1
The additive is dispersant andsurfactant, the dispersant and surfactant can control the size of superfine particle in certain range, the superfine particle is in direct proportion to the dispersant, and the larger the dispersant is, the smaller the superfine particle is, and the ratio of the material to the dispersant is 0.2-1%. The dispersant is used only and the surfactant is not used, so that the dosage of the dispersant is increased, the superfine particle of the product is increased by 2 times compared with the superfine particle of the product using the surfactant, and the proportion of the surfactant is 1%. Because the nano product has extremely small ultrafine particles and high surface potential energy, the nano product is unstable in a dispersion system and is easy to re-agglomerate after mutual collision. The addition of the dispersant and the surfactant can reduce the surface potential energy of the product ultrafine particles, and the product ultrafine particles are adsorbed on the surface of the product ultrafine particles to form an electric double layer on an interface. The new water layer on the surface of the nanometer superfine particles can not be condensed because of mutual repulsion, thereby achieving the purpose of stable dispersion.
Claims (6)
1. A technology and process for preparing nm pigment and nm magnetic material from iron and steel through hot processing iron scale includes continuous casting, hot rolling, forging, drawing wire, and acid washing. The iron and steel hot-working iron scale is ferroferric oxide (Fe)3O4) Iron oxide (Fe)2O3) And iron monoxide (FeO), the preparation method of the mixture is characterized in that:
the raw materials are respectively added with an oxidant and an additive in a stirring reaction tank for chemical processing to generate ferric hydroxide colloid. Then transferring the ferric hydroxide colloid into a reaction crucible for secondary processing to obtain the ferric oxide. Filtering the ferric oxide by a vacuum filter, and then washing. And drying the washed product by adopting a steam chamber, and performing heat treatment by using a gas furnace to obtain the product. And performing ultrafine grinding by using an air flow mill, packaging the ground product by using a vacuum packaging machine, and finally boxing and leaving the factory.
2. The nano-iron oxide red (Fe) of claim 12O3) And nano magnetic powder (gamma. Fe)2O3) The preparation technical method (formula) is as follows:
3. the nano black iron oxide (Fe) of claim 13O4) And nano magnetic iron oxide (Fe)3O4) The preparation technical method (formula) is as follows:
4. the nano-iron oxide yellow (Fe) as claimed in claim 12O3·H2O) the preparation technical method (formula) comprises the following steps:
5. the composition of claim 1 wherein said additive is a dispersant or a surfactant.
6. The device as in claim 1, wherein said nanomagnetic material is nanomagnetic Fe2O4And nano gamma-Fe2O3Magnetic powder
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021456801A CN1521219A (en) | 2002-10-19 | 2002-10-19 | Production of nm- pigments and nm- magnetic materials using ferric oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021456801A CN1521219A (en) | 2002-10-19 | 2002-10-19 | Production of nm- pigments and nm- magnetic materials using ferric oxide |
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| Publication Number | Publication Date |
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| CN1521219A true CN1521219A (en) | 2004-08-18 |
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| CNA021456801A Pending CN1521219A (en) | 2002-10-19 | 2002-10-19 | Production of nm- pigments and nm- magnetic materials using ferric oxide |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381363C (en) * | 2006-04-13 | 2008-04-16 | 上海交通大学 | Temperature-controlled pressure-controlled microwave synthesis method for water-soluble ferroferric oxide nano crystal |
| CN102464356A (en) * | 2010-11-18 | 2012-05-23 | 宝山钢铁股份有限公司 | Application and recycling method of normalized silicon steel shot blasting scale |
| CN102604438A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Iron oxide yellow pigment with low oil absorption |
| CN102604436A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Preparation method of low oil absorption iron oxide yellow |
| CN101585557B (en) * | 2008-05-23 | 2013-06-26 | 北京三聚环保新材料股份有限公司 | Method for preparing magnetic oxide iron and magnetic oxide iron desulfurizer prepared thereby |
| CN103788715A (en) * | 2014-02-12 | 2014-05-14 | 铜陵瑞莱科技有限公司 | Iron oxide black pigment containing camphor oil |
| CN103928689A (en) * | 2014-04-21 | 2014-07-16 | 合肥工业大学 | Method for preparing heterogeneous electric Fenton cathode material |
| CN105152223A (en) * | 2015-07-23 | 2015-12-16 | 南通万宝实业有限公司 | Method for preparing fine-granular magnetic ferric oxide powder for preparing hard magnet |
-
2002
- 2002-10-19 CN CNA021456801A patent/CN1521219A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381363C (en) * | 2006-04-13 | 2008-04-16 | 上海交通大学 | Temperature-controlled pressure-controlled microwave synthesis method for water-soluble ferroferric oxide nano crystal |
| CN101585557B (en) * | 2008-05-23 | 2013-06-26 | 北京三聚环保新材料股份有限公司 | Method for preparing magnetic oxide iron and magnetic oxide iron desulfurizer prepared thereby |
| CN102464356A (en) * | 2010-11-18 | 2012-05-23 | 宝山钢铁股份有限公司 | Application and recycling method of normalized silicon steel shot blasting scale |
| CN102464356B (en) * | 2010-11-18 | 2014-03-05 | 宝山钢铁股份有限公司 | Application and recycling method of normalized silicon steel shot blasting scale |
| CN102604438A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Iron oxide yellow pigment with low oil absorption |
| CN102604436A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Preparation method of low oil absorption iron oxide yellow |
| CN102604436B (en) * | 2012-02-21 | 2013-11-06 | 升华集团德清华源颜料有限公司 | Preparation method of low oil absorption iron oxide yellow |
| CN102604438B (en) * | 2012-02-21 | 2014-09-24 | 升华集团德清华源颜料有限公司 | Iron oxide yellow pigment with low oil absorption |
| CN103788715A (en) * | 2014-02-12 | 2014-05-14 | 铜陵瑞莱科技有限公司 | Iron oxide black pigment containing camphor oil |
| CN103928689A (en) * | 2014-04-21 | 2014-07-16 | 合肥工业大学 | Method for preparing heterogeneous electric Fenton cathode material |
| CN103928689B (en) * | 2014-04-21 | 2016-08-24 | 合肥工业大学 | A kind of preparation method of heterogeneous Fenton cathode material |
| CN105152223A (en) * | 2015-07-23 | 2015-12-16 | 南通万宝实业有限公司 | Method for preparing fine-granular magnetic ferric oxide powder for preparing hard magnet |
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