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Preparation method of manganese zinc soft magnetic ferrite

A technology of manganese-zinc soft magnets and oxygen bodies, which is applied in the direction of magnetic materials, magnetic objects, and inorganic materials, can solve the problems of low saturation magnetic flux density and high core loss, achieve high saturation magnetic flux density, and improve saturation The effect of magnetic flux density and uniform fine particles

Inactive Publication Date: 2018-03-23
吴刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem mainly solved by the present invention is to provide a method for preparing a manganese-zinc soft ferrite material in view of the defects of low saturation magnetic flux density and high core loss of soft ferrite materials

Method used

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  • Preparation method of manganese zinc soft magnetic ferrite

Examples

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example 1

[0028] Put 100g pyrolusite ore in a pulverizer and pulverize for 3h, pass through a 100 mesh sieve to obtain sieved pyrolusite powder, place the pyrolusite powder in a conical flask, add 40g iron powder to the conical flask, 200mL mass fraction is 45 % sulfuric acid solution and 20g orange peel, after stirring and mixing for 20min, move the conical flask into a water bath, heat up to 50°C, keep warm for 2h, and obtain a leaching solution; add 70g manganese dioxide to the leaching solution, and heat up to 80°C , reacted for 2 hours to obtain the oxidized leaching solution, continue to add 30 g of manganese carbonate to the oxidized leaching solution, stir until no bubbles are produced, carry out suction filtration to the oxidizing leaching solution, remove the filter residue to obtain the filtrate, transfer the filtrate to a beaker, and add a mass fraction of 25% ammonia water, adjust the pH to 6.5, stir for 5 minutes, filter and separate under normal pressure to obtain a deep i...

example 2

[0030] 110g pyrolusite ore is placed in the pulverizer and pulverized for 3.5h, and passed through a 100 mesh sieve to obtain sieved pyrolusite powder, which is placed in a conical flask, and 45g iron powder, 250mL mass fraction is added to the conical flask. 45% sulfuric acid solution and 25g orange peel were stirred and mixed for 25min, then the conical flask was moved into a water bath, heated to 52°C, and kept for 2.5h to obtain a leaching solution; 75g of manganese dioxide was added to the leaching solution, and the temperature was raised to React for 2.5 hours at 85°C to obtain the oxidized leaching solution. Continue to add 35g of manganese carbonate to the oxidized leaching solution and stir until no bubbles are generated. Suction filter the oxidized leaching solution to remove the filter residue to obtain the filtrate. Transfer the filtrate to a beaker and add Ammonia water with a mass fraction of 25%, adjust the pH to 6.7, stir for 7 minutes, filter and separate under...

example 3

[0032] Put 120g pyrolusite ore in a pulverizer and pulverize it for 4h, pass through a 100 mesh sieve to obtain sieved pyrolusite powder, place the pyrolusite powder in a conical flask, add 50g iron powder to the conical flask, 300mL mass fraction is 45 % sulfuric acid solution and 30g orange peel, after stirring and mixing for 30min, move the conical flask into a water bath, heat up to 55°C, keep warm for 3h, and obtain a leaching solution; add 80g of manganese dioxide to the leaching solution, and heat up to 90°C , reacted for 3h to obtain the oxidized leachate, continue to add 40g of manganese carbonate to the oxidized leachate, stir until no bubbles are produced, carry out suction filtration to the oxidized leachate, remove the filter residue to obtain the filtrate, transfer the filtrate to a beaker, add a mass fraction of 25% ammonia water, adjust the pH to 7.0, stir for 10 minutes, filter and separate under normal pressure to obtain a deep iron removal solution; add 120mL...

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Abstract

The invention discloses a preparation method of a manganese zinc soft magnetic ferrite, and belongs to the technical field of ferrite material preparation. Orange peels and iron powder are reduced ina sulfuric acid solution for reduction leaching to form manganese dioxide in pyrolusite so as to obtain a leaching agent containing manganese ions, and manganese dioxide is added into the leaching agent, and the manganese zinc soft magnetic ferrite is obtained through ball-milling, mold pressing and sintering, so that the direct current electrical resistance is extremely high, the generation of aneddy current can be reduced, the loss of a magnetic core is reduced, and the saturation flux density of the soft magnetic ferrite is improved; during sintering, the sintering temperature is raised toa relatively high temperature, and then the sintering temperature is deceased to a relatively low temperature, the temperature is preserved for a period of time, in the period, crystal particles arefree of obvious growth, the sintered and obtained soft magnetic ferrite has uniformer and finer particles and relatively high density by controlling the change of the temperature, and the Curie temperature of the soft magnetic ferrite is increased, so that the manganese zinc soft magnetic ferrite has high saturation flux density and abroad application prospects.

Description

technical field [0001] The invention discloses a method for preparing a manganese-zinc soft magnetic ferrite material, which belongs to the technical field of ferrite material preparation. Background technique [0002] When the magnetization occurs at Hc not greater than 1000A / m, such materials are called soft magnets. Soft ferrite is based on Fe 2 o 3 Ferrimagnetic oxide as the main component is produced by powder metallurgy. Soft ferrite refers to a magnetic material that is easily magnetized and demagnetized under the action of an external magnetic field. It is often a composite oxide obtained by sintering iron oxide and one or more other metal oxides. The application of soft magnetic materials in industry began at the end of the 19th century, with the rise of electric power and telecommunication technology, and its application range is extremely wide. Soft magnetic materials are not only used in the fields of home appliances, information technology, automobiles and o...

Claims

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Application Information

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IPC IPC(8): C04B35/26H01F1/34C04B35/626C04B35/634
CPCC04B35/2658C04B35/62605C04B35/63416C04B2235/3263C04B2235/3284H01F1/344
Inventor 雷洪云何少雄陈可
Owner 吴刚
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