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Processing method for preparing powder used for ferrite magnetic material

A technology of magnetic materials and processing methods, applied in the field of preparation of ferrite magnetic materials, can solve the problems of long grinding time, poor powder performance, and high processing costs, and achieve improved performance indicators, excellent comprehensive performance, and reduced production costs. low effect

Inactive Publication Date: 2012-10-17
DANGTU HAICHUAN MAGNETIC MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the disadvantages of high processing cost, long grinding time and poor performance of powder materials used in ferrite magnetic materials with a particle size of 0.8-0.95 μm in the prior art, and to provide a method for preparing ferrite The powder processing method for magnetic materials, through the method of the present invention, the cost of preparing the powder is greatly reduced, and the comprehensive performance of the powder is excellent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of powder material processing method that prepares ferrite magnetic material of the present embodiment, its specific preparation steps are:

[0039] (1) Ingredients: The powder used to prepare ferrite magnetic materials in this example includes main materials and auxiliary materials. The main material is iron red pre-burned powder. Industry Co., Ltd., the average particle size is 4~6μm, and the auxiliary materials include Fe 2 o 3 、Al 2 o 3 , SiO 2 , SrCO 3 , CaCO 3 、Co 2 o 3 , La 2 o 3 、TiO 2 , ZrO 2 , Sb 2 o 3 、Cr 2 o 3 、MoO 3 、 Ta 2 o 5 , the mass percentage of the above auxiliary materials in the main material is 5.0% Fe 2 o 3 , 0.30%Al 2 o 3 , 0.25%SiO2 2 , 0.68%SrCO 3 , 0.12%CaCO 3 , 0.13%Co 2 o 3 , 0.12% La 2 o 3 , 0.30%TiO 2 , 0.15%ZrO 2 , 0.18%Sb 2 o 3 , 0.10% Cr 2 o 3 , 0.20%MoO 3 , 0.17%Ta 2 o 5 , the average particle size of the auxiliary material after pre-grinding is 1.0~1.5 μm; it is worth noting that the prepa...

Embodiment 2

[0051] A kind of powder material processing method that prepares ferrite magnetic material of the present embodiment, its concrete steps are:

[0052] (1) Ingredients: The powder used to prepare ferrite magnetic materials in this example includes main materials and auxiliary materials. The main material is iron red calcined powder with an average particle size of 4-6 μm. 2 o 3 、Al 2 o 3 , SiO 2 , SrCO 3 , CaCO 3 、Co 2 o 3 , La 2 o 3 、TiO 2 , ZrO 2 , Sb 2 o 3 、Cr 2 o 3 、MoO 3 、 Ta 2 o 5 , the mass percentage of the above auxiliary materials in the main material is 5.0% Fe 2 o 3 , 0.30%Al 2 o 3 , 0.25%SiO2 2 , 0.68%SrCO 3 , 0.12%CaCO 3 , 0.13%Co 2 o 3 , 0.12%La 2 o 3 , 0.30%TiO 2 , 0.15%ZrO 2 , 0.18%Sb 2 o 3 , 0.10% Cr 2 o 3 , 0.20%MoO 3 , 0.17%Ta 2 o 5 , the average particle size of excipients is 1.0~1.5 μm;

[0053] (2) Ball milling: The ball milling stage is divided into two processes:

[0054] a) Put the main material and auxiliary mate...

Embodiment 3

[0064] A kind of powder material processing method that prepares ferrite magnetic material of the present embodiment, its concrete steps are:

[0065] (1) Ingredients: The powder used to prepare ferrite magnetic materials in this example includes main materials and auxiliary materials. The main material is iron red calcined powder with an average particle size of 4-6 μm. 2 o 3 、Al 2 o 3 , SiO 2 , SrCO 3 , CaCO 3 、Co 2 o 3 , La 2 o 3 、TiO 2 , ZrO 2 , Sb 2 o 3 、Cr 2 o 3 、MoO 3 、 Ta 2 o 5 , the mass percentage of the above auxiliary materials in the main material is 5.0% Fe2 o 3 , 0.30%Al 2 o 3 , 0.25%SiO2 2 , 0.68%SrCO 3 , 0.12%CaCO 3 , 0.13%Co 2 o 3 , 0.12%La 2 o 3 , 0.30%TiO 2 , 0.15%ZrO 2 , 0.18%Sb 2 o 3 , 0.10% Cr 2 o 3 , 0.20%MoO 3 , 0.17%Ta 2 o 5 , the average particle size of excipients is 1.0~1.5 μm;

[0066] (2) Ball milling: The ball milling stage is divided into two processes:

[0067] a) Put the main material and auxiliary materi...

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Abstract

The invention discloses a processing method for preparing powder used for ferrite magnetic material, belonging to the technical field of preparation of ferrite magnetic material. The method comprises the steps of dosing, wherein the main material is iron oxide red presintered powder, and the auxiliary materials comprise Fe2O3, Al2O3, SiO2, SrCO3, CaCO3, Co2O3, La2O3, TiO2, ZrO2, Sb2O3, Cr2O3, MoO3, Ta2O5; ball milling: carring out ball-milling a mixed ball mill I for 4 hours and then carring out ball-milling for 5 hours in a mixed ball mill II; dehydration: dehydrating by filter-pressing with a dehydrator and placing outdoors for airing; drying: drying for 4 hours at 180-200 DEG C, and then adjusting to 150 DEG C and drying for 2-3 hours; smashing: smashing to powder with grain diameter of 0.8-0.95 microns; and packaging. According to the invention, the energy consumption is low so that the production cost for preparing the powder is greatly reduced and is just about 90% of the production cost of common methods in the prior art. Performance indexes of the residual magnetization, the coercivity and the intrinsic coercivity are improved to a great extent.

Description

technical field [0001] The invention belongs to the technical field of preparation of ferrite magnetic materials, and more specifically relates to a powder processing method for preparing ferrite magnetic materials. Background technique [0002] Ferrite magnetic material is a composite oxide sintered non-metallic magnetic material. It belongs to the category of semiconductors in electricity, so it is also called magnetic semiconductors. Magnetite (the main component is Fe 3 o 4 ) is the simplest ferrite. Internationally, ferrite has been synthesized as early as the beginning of the 20th century. In the 1930s, France, Japan, Germany, and Holland successively carried out systematic research. The Netherlands has started the industrial production of ferrite soft magnetic materials since 1946. China started the industrial production of ferrite around 1956. Ferrite has been widely used in communication broadcasting, computing technology, automatic control, radar navigation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/626
Inventor 甘振海
Owner DANGTU HAICHUAN MAGNETIC MATERIALS
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