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Preparation method of ultrafine nano ferroferric oxide powder

A ferroferric oxide and ultra-fine nanotechnology, applied in the field of metallurgy, can solve the problems of difficult control of process parameters, complex chemical process, and difficulty in mass production, etc., and achieve the effect of cheap raw materials, relatively low reaction temperature and simple process

Inactive Publication Date: 2019-07-05
徐州润锋新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical method has disadvantages such as complex process, difficult control of process parameters and small output, so it is difficult to produce in batches

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing ultrafine nano-ferric oxide powder, characterized in that: the preparation method comprises the following steps:

[0017] A. Take a certain amount of ferric chloride, add a solvent medium and a surfactant, then add a certain amount of sodium hydroxide, and use a high-speed centrifuge to separate and wash, and ultrasonically disperse evenly;

[0018] B. Transfer the above-mentioned prepared mixture into the heating reactor, and discharge the air in the reactor at any time;

[0019] C, then wash reactant with deionized water, remove ethylene glycol solution and unnecessary sodium hydroxide;

[0020] D. Dry the centrifuge in a drying oven, cool the reactor to room temperature, take out the solid powder in the reactor, ultrasonically disperse, separate with a magnet, wash, and dry to finally obtain ultrafine nano-ferric oxide Powder.

[0021] Further, the solvent medium in step A is one or a mixture of methanol or ethylene glycol.

[0022] Further,...

Embodiment 2

[0025] A preparation method of ultrafine nanometer ferric oxide powder, said preparation method comprising the steps of:

[0026] A. Dissolve a certain amount of ferric chloride in a certain amount of solvent medium and surfactant, then add a certain amount of sodium hydroxide, and use a high-speed centrifuge to separate and wash it, and ultrasonically disperse it evenly;

[0027] B. Transfer the above-mentioned prepared mixture into the heating reactor, and discharge the air in the reactor at any time;

[0028] C, then wash reactant with deionized water, remove ethylene glycol solution and unnecessary sodium hydroxide;

[0029] D. Dry the centrifuge in a drying oven, cool the reactor to room temperature, take out the solid powder in the reactor, ultrasonically disperse, separate with a magnet, wash, and dry to finally obtain ultrafine nano-ferric oxide Powder.

[0030] Further, the solvent medium in step A is one or a mixture of methanol or ethylene glycol.

[0031] Furthe...

Embodiment 3

[0034] A preparation method of ultrafine nanometer ferric oxide powder, said preparation method comprising the steps of:

[0035] A. Dissolve a certain amount of ferric chloride in a certain amount of solvent medium and surfactant, then add a certain amount of sodium hydroxide, and use a high-speed centrifuge to separate and wash it, and ultrasonically disperse it evenly;

[0036] B. Transfer the above-mentioned prepared mixture into the heating reactor, and discharge the air in the reactor at any time;

[0037] C, then wash reactant with deionized water, remove ethylene glycol solution and unnecessary sodium hydroxide;

[0038] D. Dry the centrifuge in a drying oven, cool the reactor to room temperature, take out the solid powder in the reactor, ultrasonically disperse, separate with a magnet, wash, and dry to finally obtain ultrafine nano-ferric oxide Powder.

[0039] Further, the solvent medium in step A is one or a mixture of methanol or ethylene glycol.

[0040] Furthe...

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PUM

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Abstract

The invention discloses a preparation method of ultrafine nano ferroferric oxide powder, and relates to the technical field of metallurgy. The preparation method comprises the steps of a certain amount of ferric trichloride is taken and dissolved, a certain amount of solvent medium and a certain amount of surfactant are added in the ferric trichloride, then a certain amount of sodium hydroxide isadded, a high-speed centrifuge is used for separation and washing, after uniform ultrasonic dispersion, centrifuged substances are dried in a drying box, a reactor is cooled to the room temperature, solid powder in the reactor is taken out, and after ultrasonic dispersion, separation with magnets, washing and drying, ultrafine nano ferroferric oxide powder can be finally obtained. The invention provides the preparation method of the ultrafine nano ferroferric oxide powder. The process is simple, the reaction time is short, the reaction temperature is relatively low, and no pollution is caused.The preparation method has high applicability to the raw materials, the raw materials are cheap, the prepared product is easy to separate, and the obtained ferroferric oxide is controllable in particle size and good in dispersion and can be widely used.

Description

technical field [0001] The invention relates to a preparation method of ultrafine nanometer ferric oxide powder, and relates to the technical field of metallurgy. Background technique [0002] Nano ferroferric oxide magnetic powder is a new type of high-function, high value-added fine inorganic chemical product facing the 21st century, because it has special properties incomparable to general bulk materials and New uses, so it can be widely used in national defense, surface engineering, environmental engineering, chemical industry, electronic materials, and semiconductor materials and other fields, and has a very broad application prospect [0003] At present, the methods for preparing nano-ferroferric oxide mainly include physical and chemical methods: physical methods (such as mechanical pulverization, etc.) are easy to bring in impurities and obtain irregular particle shapes, so they are generally not used. Chemical methods (such as sol-gel method, microemulsion method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08B82Y30/00
CPCB82Y30/00C01G49/08
Inventor 刘力强
Owner 徐州润锋新材料有限公司