CN107337448A - A kind of production method of permanent-magnet ferrite - Google Patents

A kind of production method of permanent-magnet ferrite Download PDF

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Publication number
CN107337448A
CN107337448A CN201710573544.0A CN201710573544A CN107337448A CN 107337448 A CN107337448 A CN 107337448A CN 201710573544 A CN201710573544 A CN 201710573544A CN 107337448 A CN107337448 A CN 107337448A
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China
Prior art keywords
permanent
magnet ferrite
ferrite
production method
magnet
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CN201710573544.0A
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Inventor
卞文进
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HAIAN COUNTY JULI MAGNETIC MATERIALS CO Ltd
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HAIAN COUNTY JULI MAGNETIC MATERIALS CO Ltd
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Priority to CN201710573544.0A priority Critical patent/CN107337448A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2683—Other ferrites containing alkaline earth metals or lead
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/6261—Milling
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62675—Thermal treatment of powders or mixtures thereof other than sintering characterised by the treatment temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3213—Strontium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/605—Making or treating the green body or pre-form in a magnetic field

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

The invention provides a kind of preparation method of permanent-magnet ferrite, comprise the following steps：1）Prepare it is ferritic match somebody with somebody square iron phosphorus, zirconium dioxide, strontium carbonate and calcium carbonate, the uniform mixed slurry of wet method, 1300 DEG C of high temperature place a period of time, preheating, obtain the permanent ferrite prefiring materials of Y33H 2；2）Preburning material is subjected to coarse crushing；3）Fine crushing is carried out in ball mill；4）It is molded under 11000Oe 13000oe magnetic fields, obtains permanent-magnet ferrite green compact；5）By permanent-magnet ferrite green sintering, permanent-magnet ferrite is obtained.Using permanent-magnet ferrite made of the method for the present invention, there is very high magnetic property, can be used in manufacturing the higher pump housings of requirement such as permagnetic synchronous motor.

Description

A kind of production method of permanent-magnet ferrite
Technical field
The present invention relates to a kind of preparation method of permanent-magnet ferrite.
Background technology
The moulding process of permanent-magnet ferrite mainly has two kinds of dry-pressing and wet pressing, and the properties of product of wherein Wet-pressing molding are generally high In dry-pressing formed product, but the shaping speed of product is slow, qualification rate is low, the dry-pressing formed production advantage be higher than wet pressing into Type, shaping speed is fast, qualification rate is high, is easy to produce small size and complex-shaped product.
At present, the magnetic property of dry-pressing product is not universal high, and general preferable dry-pressing material remanent magnetism is intrinsic in 360-370mT Coercivity is in 220KA/m-240KA/m.Dry-pressing product is mainly used in toy motor, and added value of product is not high, is not suitable for requirement Higher pump housing class permanent-magnet synchronous small machine.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art part, there is provided a kind of production method of permanent-magnet ferrite.
The production method of the permanent-magnet ferrite of the present invention, comprises the following steps：
1）Prepare ferritic to match somebody with somebody square iron phosphorus, zirconium dioxide, strontium carbonate and calcium carbonate, the uniform mixed slurry of wet method, 1300 DEG C of height Temperature places a period of time, preheating, obtains Y33H-2 permanent ferrite prefiring materials；
2）Preburning material is subjected to coarse crushing；
3）Fine crushing is carried out in ball mill；
4）It is molded under 11000Oe-13000oe magnetic fields, obtains permanent-magnet ferrite green compact；
5）By permanent-magnet ferrite green sintering, permanent-magnet ferrite is obtained.
Preferably,
Described step 2）In, coarse crushing to particle diameter 2-5 microns.
Described step 3）In, thin broken is broken to particle diameter 0.5-1 microns, before finely divided, adds calcium carbonate, silica, It is additionally added dispersant sorbierite.
Using permanent-magnet ferrite made of the method for the present invention, there is very high magnetic property, it is same to can be used in manufacture permanent magnetism Walk the higher pump housings of requirement such as motor.
Embodiment
With reference to embodiment, the present invention is described in further detail.
Embodiment 1
The production method of the permanent-magnet ferrite of the present invention, comprises the following steps：
1）Prepare ferritic to match somebody with somebody square iron phosphorus, zirconium dioxide, strontium carbonate and calcium carbonate, the uniform mixed slurry of wet method, 1300 DEG C of height Temperature places a period of time, preheating, obtains Y33H-2 permanent ferrite prefiring materials；
2）Preburning material is subjected to coarse crushing；
3）Fine crushing is carried out in ball mill；
4）It is molded under 13000Oe magnetic fields, obtains permanent-magnet ferrite green compact；
5）By permanent-magnet ferrite green sintering, permanent-magnet ferrite is obtained.
Described step 2）In, coarse crushing to 2 microns of particle diameter.
Described step 3）In, thin broken is broken to 0.5 micron of particle diameter, before finely divided, adds calcium carbonate, silica, also Add dispersant sorbierite.
Embodiment 2
The production method of the permanent-magnet ferrite of the present invention, comprises the following steps：
1）Prepare ferritic to match somebody with somebody square iron phosphorus, zirconium dioxide, strontium carbonate and calcium carbonate, the uniform mixed slurry of wet method, 1300 DEG C of height Temperature places a period of time, preheating, obtains Y33H-2 permanent ferrite prefiring materials；
2）Preburning material is subjected to coarse crushing；
3）Fine crushing is carried out in ball mill；
4）It is molded under 12000Oe magnetic fields, obtains permanent-magnet ferrite green compact；
5）By permanent-magnet ferrite green sintering, permanent-magnet ferrite is obtained.
Described step 2）In, coarse crushing to 5 microns of particle diameter.
Described step 3）In, thin broken is broken to 1 micron of particle diameter, before finely divided, adds calcium carbonate, silica, also adds Enter dispersant sorbierite.
Embodiment 3
The production method of the permanent-magnet ferrite of the present invention, comprises the following steps：
1）Prepare ferritic to match somebody with somebody square iron phosphorus, zirconium dioxide, strontium carbonate and calcium carbonate, the uniform mixed slurry of wet method, 1300 DEG C of height Temperature places a period of time, preheating, obtains Y33H-2 permanent ferrite prefiring materials；
2）Preburning material is subjected to coarse crushing；
3）Fine crushing is carried out in ball mill；
4）It is molded under 11000Oe magnetic fields, obtains permanent-magnet ferrite green compact；
5）By permanent-magnet ferrite green sintering, permanent-magnet ferrite is obtained.
Described step 2）In, coarse crushing to 3 microns of particle diameter.
Described step 3）In, thin broken is broken to 0.8 micron of particle diameter, before finely divided, adds calcium carbonate, silica, also Add dispersant sorbierite.

Claims (3)

1. a kind of production method of permanent-magnet ferrite, it is characterised in that comprise the following steps：
1）Prepare ferritic to match somebody with somebody square iron phosphorus, zirconium dioxide, strontium carbonate and calcium carbonate, the uniform mixed slurry of wet method, 1300 DEG C of height Temperature places a period of time, preheating, obtains Y33H-2 permanent ferrite prefiring materials；
2）Preburning material is subjected to coarse crushing；
3）Fine crushing is carried out in ball mill；
4）It is molded under 11000Oe-13000oe magnetic fields, obtains permanent-magnet ferrite green compact；
5）By permanent-magnet ferrite green sintering, permanent-magnet ferrite is obtained.
2. the production method of permanent-magnet ferrite according to claim 1, it is characterised in that described step 2）In, it is thick broken It is broken to particle diameter 2-5 microns.
3. the production method of permanent-magnet ferrite according to claim 1, it is characterised in that described step 3）In, thin broken Particle diameter 0.5-1 microns are broken to, before finely divided, calcium carbonate, silica added, is additionally added dispersant sorbierite.
CN201710573544.0A 2017-07-14 2017-07-14 A kind of production method of permanent-magnet ferrite Pending CN107337448A (en)

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CN201710573544.0A CN107337448A (en) 2017-07-14 2017-07-14 A kind of production method of permanent-magnet ferrite

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111298934A (en) * 2019-11-24 2020-06-19 浙江省东阳市剑华磁业有限公司 Preforming method for sintering permanent magnetic ferrite

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1805074A (en) * 2005-01-12 2006-07-19 安徽龙磁科技有限责任公司 Preparation technique for permanent magnet ferrite material and components for magnetron in microwave oven
CN105174929A (en) * 2015-09-15 2015-12-23 重庆通赛机电有限公司 Permanent magnetic ferrite for automobile motor and manufacturing method of permanent magnetic ferrite
CN106365625A (en) * 2016-08-25 2017-02-01 绵阳市东辰磁性材料有限公司 Production method of high-internal surface field permanent magnetic ferrite used in medium- and small-size electric generator
CN106866131A (en) * 2017-02-23 2017-06-20 海安县巨力磁材有限责任公司 A kind of preparation method of high-performance permanent-magnet ferrite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1805074A (en) * 2005-01-12 2006-07-19 安徽龙磁科技有限责任公司 Preparation technique for permanent magnet ferrite material and components for magnetron in microwave oven
CN105174929A (en) * 2015-09-15 2015-12-23 重庆通赛机电有限公司 Permanent magnetic ferrite for automobile motor and manufacturing method of permanent magnetic ferrite
CN106365625A (en) * 2016-08-25 2017-02-01 绵阳市东辰磁性材料有限公司 Production method of high-internal surface field permanent magnetic ferrite used in medium- and small-size electric generator
CN106866131A (en) * 2017-02-23 2017-06-20 海安县巨力磁材有限责任公司 A kind of preparation method of high-performance permanent-magnet ferrite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111298934A (en) * 2019-11-24 2020-06-19 浙江省东阳市剑华磁业有限公司 Preforming method for sintering permanent magnetic ferrite

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