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Post-treatment and purification process of iron oxide red for high-property soft magnetic ferrite

A technology of soft magnetic ferrite and iron oxide red, which is applied in the direction of iron oxide, iron oxide/iron hydroxide, etc., can solve the problems of poor product performance stability and consistency, complicated process procedures, and difficult control, etc., and achieve consistency Good, reduce resource and energy consumption, high yield effect

Active Publication Date: 2012-01-04
SHOUGANG CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process described in the patent is complicated, difficult to control, secondary pollution, poor product performance stability and consistency, etc., which cannot meet the large-scale industrial production of high-performance soft ferrite magnetic materials (such as PC44, PC95, H5C3 , H5C5 and other brand materials) requirements for iron oxide red raw materials

Method used

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  • Post-treatment and purification process of iron oxide red for high-property soft magnetic ferrite
  • Post-treatment and purification process of iron oxide red for high-property soft magnetic ferrite
  • Post-treatment and purification process of iron oxide red for high-property soft magnetic ferrite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) The iron oxide red powder produced by Ruthner method acid regeneration is directly put into the mixing tank, and then the process water with 5 times the mass of the iron oxide red powder is added to prepare the iron red water-based suspension.

[0030] (2) The process water is obtained by mixing desalted reclaimed water and production water, with a conductivity of 60μs·cm -1 , the iron red water-based suspension was stirred and washed with water for 1 hour.

[0031] (3) Turn on the ultrasonic generator intermittently during the stirring process, the ultrasonic treatment time is 2 minutes / time, and the interval time is 3 minutes.

[0032] (4) A surface modifier is added during the stirring process, and the dosage is 0.01% of the mass of the iron oxide red powder.

[0033] (5) carry out press filter dehydration treatment through the stirred iron red water-based suspension, control the water content of filter cake to be less than 35%;

[0034] (6) The dehydrated filt...

Embodiment 2

[0038] (1) The iron oxide red powder produced by Ruthner method acid regeneration is directly put into the mixing tank, and then the process water with 8 times the mass of the iron oxide red powder is added to prepare the iron red water-based suspension.

[0039] (2) The process water is obtained by mixing desalted reclaimed water and production water, with a conductivity of 300μs·cm -1 , the iron red water-based suspension was stirred and washed with water for 3 hours.

[0040] (3) Turn on the ultrasonic generator intermittently during the stirring process, the ultrasonic treatment time is 5 minutes / time, and the interval time is 10 minutes.

[0041] (4) adding a surface modifier during the stirring process, the consumption is 0.1% of the mass of iron oxide red powder;

[0042] (5) carry out press filter dehydration treatment through the stirred iron red water-based suspension, control the water content of filter cake to be less than 35%;

[0043] (6) The dehydrated filter ...

Embodiment 3

[0047] (1) The iron oxide red powder produced by Ruthner method acid regeneration is directly put into the mixing tank, and then 10 times the process water of the iron oxide red powder mass is added to prepare the iron red water-based suspension.

[0048] (2) The process water is obtained by mixing desalted reclaimed water and production water, with a conductivity of 600μs·cm -1 , the iron red water-based suspension was stirred and washed with water for 5 hours.

[0049] (3) Turn on the ultrasonic generator intermittently during the stirring process, the ultrasonic treatment time is 10 minutes / time, and the interval time is 10 minutes.

[0050] (4) adding a surface modifier in the stirring process, the consumption is 1% of the mass of iron oxide red powder;

[0051] (5) carry out press filter dehydration treatment through the stirred iron red water-based suspension, control the water content of filter cake to be less than 35%;

[0052] (6) The filter cake after dehydration e...

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Abstract

The invention discloses a post-treatment and purification process of iron oxide red for high-property soft magnetic ferrite. The process is characterized by directly water-washing and purifying iron oxide red powder obtained in an acid regeneration process with a Ruthner method, wherein process water is desalted reclaimed water obtained by desalting reclaimed water in a municipal sewage station or is process water obtained by mixing the desalted reclaimed water with production water, and in the water-washing process, the dispersion stability of the iron oxide red particles in a water-based liquid phase is improved by using an ultrasonic dispersion technology and a particle surface modification technology so as to promote the dissolution of soluble impurities in iron oxide red; and then carrying out solid-liquid separation, intensified pneumatic drying and the like. According to the invention, iron oxide red obtained by adopting the post-treatment and purification process disclosed by the invention can meet the production requirement of a high-property soft magnetic ferrite magnetic material. The process has the advantages of short process flow, low energy consumption, no pollution, high yield, stable product property, good consistency of product property and the like, and meets the requirement of industrial mass production.

Description

technical field [0001] The invention relates to a post-treatment purification process of iron oxide red for high-performance soft magnetic ferrite, and belongs to the technical field of deep processing of powder functional materials. Background technique [0002] At present, iron oxide red as a raw material for the production of high-performance soft ferrite mainly comes from the regeneration process of cold rolling pickling waste liquor in iron and steel enterprises. The acid regeneration system is mainly produced by the Ruthner process with a desiliconization device. The iron oxide obtained by this system Red has the problem of high chemical index of chloride radicals and other soluble impurities, so it is difficult to meet the technical requirements of mass production of high-performance soft ferrite magnetic materials. CN100366544C discloses a method for purifying iron oxide powder. The purification method includes the following steps: firstly, the iron oxide powder is w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06
Inventor 王亦工李艳平朱启建朱国森刘光明王敬礼国金雁王玉山周晓伟
Owner SHOUGANG CORPORATION
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