CN111453976A - Preparation process and use method of permanent magnetic ferrite ball milling mixed material - Google Patents
Preparation process and use method of permanent magnetic ferrite ball milling mixed material Download PDFInfo
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- CN111453976A CN111453976A CN202010266237.XA CN202010266237A CN111453976A CN 111453976 A CN111453976 A CN 111453976A CN 202010266237 A CN202010266237 A CN 202010266237A CN 111453976 A CN111453976 A CN 111453976A
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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
- C04B35/622—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
- C04B35/62615—High energy or reactive ball milling
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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
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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
- C04B35/622—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
- C04B35/62625—Wet mixtures
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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
- C04B35/622—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
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- 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
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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
- 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
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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
- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/442—Carbonates
Abstract
The invention discloses a preparation process of a permanent magnetic ferrite ball milling mixed material, which comprises the following specific preparation steps: step a, stirring and mixing barium carbonate and iron oxide red in a conical mixer according to a certain molar ratio by using a stirring arm, adding silicon dioxide again in a ratio of 0.3-0.8%, and pre-burning in a four-hole pushed slab kiln to form a permanent magnetic ferrite pre-burning material after mixing; step b, mixing the permanent magnetic ferrite pre-sintered material, the first section of steel ball and water according to the weight ratio of 0.6-2: 4-8:1-1.6, adding the mixture into a ball mill, mixing, and carrying out ball milling for 3-4 h; step c, transferring the ball-milled materials in the step b into a second-stage ball milling by using compressed air, wherein the materials are as follows: a second section of steel ball: the proportion of water is 0.6-2: 4-8: 1-1.6; d, filtering the slurry subjected to ball milling, and putting the slurry into a natural precipitation tower for precipitation; and e, forming the precipitated slurry. The permanent magnetic ferrite is sintered by utilizing the sectional ball milling and the equal-diameter ball milling and optimizing the molding process, so that the performance is excellent, and the production cost is reduced.
Description
Technical Field
The invention relates to a preparation process and a use method of a permanent magnetic ferrite ball milling mixed material, belonging to the technical field of permanent magnetic ferrites.
Background
The water magnetic ferrite is hexagonal ferrite or M-type ferrite. The general chemical formula of hexagonal ferrite is MeFe12O19Wherein Me is Ba, Sr or P. Compared with the water magnetic alloy, the water magnetic ferrite has the main characteristics of cheap raw materials, wide sources, simple manufacturing process and suitability for large-scale production; the material has very high resistivity, and can be used in high-frequency occasions; the chemical stability is good, and cations in the crystal lattice of the permanent magnetic ferrite are in the highest oxidation state, so that the material is not easy to oxidize; the permanent magnetic property is lower; the temperature stability is poor.
The conventional permanent magnetic ferrite ball-milling mixing preparation process is complex in production process, difficult to produce in large batch, high in production cost and technically innovative on the basis of the conventional technology.
Disclosure of Invention
The invention aims to provide a permanent magnetic ferrite ball-milling mixed material preparation process and a use method thereof, and aims to solve the problems that the existing permanent magnetic ferrite ball-milling mixed material preparation process in the background art is complex in production process, difficult to produce in large batch and high in production cost.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation process of a permanent magnetic ferrite ball milling mixed material comprises the following specific preparation steps:
step a, stirring and mixing barium carbonate and iron oxide red in a conical mixer according to a certain molar ratio by using a stirring arm, adding silicon dioxide again in a ratio of 0.3-0.8%, and pre-burning in a four-hole pushed slab kiln to form a permanent magnetic ferrite pre-burning material after mixing;
step b, mixing the permanent magnetic ferrite pre-sintered material, the first section of steel ball and water according to the weight ratio of 0.6-2: 4-8:1-1.6, adding the mixture into a ball mill, mixing, and carrying out ball milling for 3-4 h;
step c, transferring the ball-milled materials in the step b into a second-stage ball milling by using compressed air, wherein the materials are as follows: a second section of steel ball: the proportion of water is 0.6-2: 4-8: 1-1.6;
d, filtering the slurry subjected to ball milling, and putting the slurry into a natural precipitation tower for precipitation;
and e, forming the precipitated slurry.
Preferably, the molar ratio of barium carbonate to iron oxide red in the step a is 1: 5.0-7.1.
Preferably, the mixing time in the conical mixer in the step a is 1h-2 h.
Preferably, the sintering temperature in the four-hole push plate kiln in the step a is 1200-1350 ℃, and the push plate speed is 30-40 minutes per plate.
Preferably, the diameter of the steel ball in the first section in the step b is 10-14mm, and the ball-milled particles are controlled below 1.2 μm.
Preferably, the diameter of the steel ball in the first section in the step c is 4.0-8mm, and the ball milling particle is controlled to be 0.60-0.80 μm, and the ball milling is carried out for 5 h.
Preferably, in the step b, the permanent magnetic ferrite pre-sintered material, the first section steel ball and the water are mixed according to the weight ratio of 1: 6:1-1.3.
Preferably, the material in the step c: a second section of steel ball: the proportion of water is 1: 4-7-1.5.
Compared with the prior art, the invention has the following beneficial effects:
the preparation process of the ball milling mixed material of the permanent magnetic ferrite provided by the invention utilizes the sectional ball milling and the equal-diameter ball milling, and the optimized molding process to sinter the permanent magnetic ferrite, so that the performance is excellent, the process is simple compared with the conventional sintering technology, the mass production can be carried out, and the production cost is greatly reduced.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail with reference to the following examples, but the embodiments of the present invention are not limited thereto.
The preparation process of the ball milling mixed material of the permanent magnetic ferrite provided by the embodiment comprises the following steps of a, stirring and mixing barium carbonate and iron oxide red in a conical mixer according to a certain molar ratio by using a stirring arm, then adding silicon dioxide in a ratio of 0.3-0.8%, and pre-sintering in a four-hole pushed slab kiln after mixing to form a permanent magnetic ferrite pre-sintered material;
step b, mixing the permanent magnetic ferrite pre-sintered material, the first section of steel ball and water according to the weight ratio of 0.6-2: 4-8:1-1.6, adding the mixture into a ball mill, mixing, and carrying out ball milling for 3-4 h;
step c, transferring the ball-milled materials in the step b into a second-stage ball milling by using compressed air, wherein the materials are as follows: a second section of steel ball: the proportion of water is 0.6-2: 4-8: 1-1.6;
d, filtering the slurry subjected to ball milling, and putting the slurry into a natural precipitation tower for precipitation;
and e, forming the precipitated slurry.
The molar ratio of barium carbonate to iron oxide red in the step a is 1: 5.0-7.1.
And c, mixing in the conical mixer for 1-2 h in the step a.
In the step a, the sintering temperature in the four-hole push plate kiln is 1200-1350 ℃, and the push plate speed is 30-40 minutes per plate.
In the step b, the diameter of the first section of steel ball is 10-14mm, and the ball-milling particles are controlled below 1.2 mu m.
In the step c, the diameter of the first section of steel ball is 4.0-8mm, the ball milling particle is controlled at 0.60-0.80 μm, and the ball milling is carried out for 5 h.
In this embodiment, a process for preparing a ball-milling mixed material of a permanent magnetic ferrite includes the steps of a, stirring and mixing barium carbonate and iron oxide red in a conical mixer according to a certain molar ratio by using a stirring arm, mixing silica again in a ratio of 0.3% -0.8%, and pre-sintering in a four-hole pushed slab kiln after mixing to form a pre-sintered material of the permanent magnetic ferrite;
step b, mixing the permanent magnetic ferrite pre-sintered material, the first section of steel ball and water according to the weight ratio of 1: 4-7-1.5, adding the mixture into a ball mill, and carrying out ball milling for 3-4 h;
step c, transferring the ball-milled materials in the step b into a second-stage ball milling by using compressed air, wherein the materials are as follows: a second section of steel ball: the proportion of water is 1: 4-7-1.5;
d, filtering the slurry subjected to ball milling, and putting the slurry into a natural precipitation tower for precipitation;
and e, forming the precipitated slurry.
The molar ratio of barium carbonate to iron oxide red in the step a is 1: 5.0-7.1.
And c, mixing in the conical mixer for 1-2 h in the step a.
In the step a, the sintering temperature in the four-hole push plate kiln is 1200-1350 ℃, and the push plate speed is 30-40 minutes per plate.
In the step b, the diameter of the first section of steel ball is 10-14mm, and the ball-milling particles are controlled below 1.2 mu m.
In the step c, the diameter of the first section of steel ball is 4.0-8mm, the ball milling particle is controlled at 0.60-0.80 μm, and the ball milling is carried out for 5 h.
In this embodiment, the preparation process of the permanent magnetic ferrite ball milling mixed material specifically comprises the following preparation steps:
step a, stirring and mixing barium carbonate and iron oxide red in a conical mixer according to a certain molar ratio by using a stirring arm, adding silicon dioxide again in a ratio of 0.6%, and pre-burning in a four-hole pushed slab kiln to form a permanent magnetic ferrite pre-burning material after mixing;
step b, mixing the permanent magnetic ferrite pre-sintered material, the first section of steel ball and water according to the weight ratio of 0.6-2: 4-8:1-1.6, adding the mixture into a ball mill, mixing, and carrying out ball milling for 3 hours;
step c, transferring the ball-milled materials in the step b into a second-stage ball milling by using compressed air, wherein the materials are as follows: a second section of steel ball: the proportion of water is 0.6-2: 4-8: 1-1.6;
d, filtering the slurry subjected to ball milling, and putting the slurry into a natural precipitation tower for precipitation;
and e, forming the precipitated slurry.
The molar ratio of barium carbonate to iron oxide red in the step a is 1: 5.0-7.1.
And c, mixing in the conical mixer for 2h in the step a.
In the step a, the sintering temperature in a four-hole push plate kiln is 1250 ℃, and the push plate speed is 40 minutes per plate.
In the step b, the diameter of the first section of steel ball is 10-14mm, and the ball-milling particles are controlled below 1.2 mu m.
In the step c, the diameter of the first section of steel ball is 4.0-8mm, the ball milling particle is controlled at 0.60-0.80 μm, and the ball milling is carried out for 5 h.
In the step b, the permanent magnetic ferrite pre-sintered material, the first section of steel ball and the water are mixed according to the weight ratio of 1: 6:1-1.3.
Preferably, the material in the step c: a second section of steel ball: the proportion of water is 1: 4-7-1.5.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.
Claims (8)
1. A preparation process of a permanent magnetic ferrite ball milling mixed material is characterized by comprising the following specific preparation steps:
step a, stirring and mixing barium carbonate and iron oxide red in a conical mixer according to a certain molar ratio by using a stirring arm, adding silicon dioxide again in a ratio of 0.3-0.8%, and pre-burning in a four-hole pushed slab kiln to form a permanent magnetic ferrite pre-burning material after mixing;
step b, mixing the permanent magnetic ferrite pre-sintered material, the first section of steel ball and water according to the weight ratio of 0.6-2: 4-8:1-1.6, adding the mixture into a ball mill, mixing, and carrying out ball milling for 3-4 h;
step c, transferring the ball-milled materials in the step b into a second-stage ball milling by using compressed air, wherein the materials are as follows: a second section of steel ball: the proportion of water is 0.6-2: 4-8: 1-1.6;
d, filtering the slurry subjected to ball milling, and putting the slurry into a natural precipitation tower for precipitation;
and e, forming the precipitated slurry.
2. The preparation process of the permanent magnetic ferrite ball milling mixed material according to claim 1, which is characterized in that: the molar ratio of barium carbonate to iron oxide red in the step a is 1: 5.0-7.1.
3. The preparation process of the permanent magnetic ferrite ball milling mixed material according to claim 1, which is characterized in that: and b, mixing in the conical mixer in the step a for 1-2 h.
4. The preparation process of the permanent magnetic ferrite ball milling mixed material according to claim 1, which is characterized in that: in the step a, the sintering temperature in the four-hole push plate kiln is 1200-1350 ℃, and the push plate speed is 30-40 minutes per plate.
5. The preparation process of the permanent magnetic ferrite ball milling mixed material according to claim 1, which is characterized in that: in the step b, the diameter of the first section of steel ball is 10-14mm, and the ball-milling particles are controlled below 1.2 mu m.
6. The preparation process of the permanent magnetic ferrite ball milling mixed material according to claim 1, which is characterized in that: in the step c, the diameter of the first section of steel ball is 4.0-8mm, the ball milling particle is controlled at 0.60-0.80 mu m, and the ball milling is carried out for 5 hours.
7. The preparation process of the permanent magnetic ferrite ball milling mixed material according to claim 1, which is characterized in that: in the step b, the permanent magnetic ferrite pre-sintered material, the first section of steel ball and the water are mixed according to the weight ratio of 1: 6:1-1.3.
8. The preparation process of the permanent magnetic ferrite ball milling mixed material according to claim 1, which is characterized in that: the step c comprises the following steps: a second section of steel ball: the proportion of water is 1: 4-7-1.5.
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| CN202010266237.XA CN111453976A (en) | 2020-04-07 | 2020-04-07 | Preparation process and use method of permanent magnetic ferrite ball milling mixed material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112898006A (en) * | 2021-03-22 | 2021-06-04 | 江苏启诚磁业有限公司 | Preparation process of permanent magnetic ferrite ball milling mixing material |
| CN115180938A (en) * | 2022-08-01 | 2022-10-14 | 横店集团东磁股份有限公司 | Permanent magnetic ferrite pre-sintering material and preparation method thereof |
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| CN107573055A (en) * | 2017-10-23 | 2018-01-12 | 安徽中磁高科有限公司 | The processing method of magneto magnetic material |
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| JPH0562818A (en) * | 1991-08-30 | 1993-03-12 | Tdk Corp | Method of manufacturing oxide permanent magnet |
| JP2009001476A (en) * | 2007-03-28 | 2009-01-08 | Hitachi Metals Ltd | Ferrite sintered magnet, method for producing the same and magnet roll and non-reciprocal circuit element using the same |
| CN102666431A (en) * | 2010-03-17 | 2012-09-12 | Tdk株式会社 | Ferrite magnetic material, ferrite magnet, ferrite sintered magnet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112898006A (en) * | 2021-03-22 | 2021-06-04 | 江苏启诚磁业有限公司 | Preparation process of permanent magnetic ferrite ball milling mixing material |
| CN115180938A (en) * | 2022-08-01 | 2022-10-14 | 横店集团东磁股份有限公司 | Permanent magnetic ferrite pre-sintering material and preparation method thereof |
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