CN1330604C - Manufacture of high performance binding Sr ferrite magnet powder from iron scales - Google Patents
Manufacture of high performance binding Sr ferrite magnet powder from iron scales Download PDFInfo
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- CN1330604C CN1330604C CNB031158625A CN03115862A CN1330604C CN 1330604 C CN1330604 C CN 1330604C CN B031158625 A CNB031158625 A CN B031158625A CN 03115862 A CN03115862 A CN 03115862A CN 1330604 C CN1330604 C CN 1330604C
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- powder
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- iron scale
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Abstract
The present invention relates to a manufacturing method of magnetic material, particularly to a method for manufacturing high performance strontia ferrite binding magnetic powder from iron scales. The method comprises the following main steps: integrated processing steps, such as granulation oxidation and ball milling of iron scales, proportioning operation, mechanical combination, filter pressing operation, drying operation, sand milling operation, pelletizing operation, low temperature sintering operation, annealing operation, etc., are carried out. The method adopts cheap iron scales as raw material, and therefore, the cost of manufactured strontia ferrite binding magnetic powder is greatly reduced. The product performance is enhanced.
Description
Technical field
The present invention relates to a kind of manufacture method of magneticsubstance, especially a kind of method of making high-performance strontium ferrites bonding magnetic with iron scale.
Background technology
Strontium ferrites bonding magnetic is a main raw material of producing the plastic cement permanent magnet, can make rubber, injection moulding, a PLM poly-magnetic, mould the permanent-magnet ferrite product of magnetic particle four big series.It is raw material that iron oxide red is generally adopted in the manufacturing of high-performance strontium ferrites bonding magnetic in the prior art, produces by technologies such as high temperature sinterings, and this method gained strontium ferrites bonding magnetic crystal grain is thicker, and HCJ is on the low side, and cost is higher.
Summary of the invention
Task of the present invention is a kind of method of making high-performance strontium ferrites bonding magnetic with iron scale of design.
Task of the present invention realizes by following processing step:
(a) the granulation oxidation and ball milling of iron scale: ball mill becomes powder with iron scale, uses the granulating disc granulation then, obtains pelletizing, carries out the rotary kiln oxidation again, makes the oxidation ball, with ball mill the oxidation ball milling is become brown iron oxide again;
(b) batching-mechanical chemical combination: brown iron oxide and SrCO that previous step is obtained suddenly
3Prepare burden by suitable proportion, use water as medium again, material, steel ball are mixed the back in ball mill, carry out ball milling with water;
(c) press filtration and oven dry: the slurry that mechanical chemical combination is handled carries out press filtration, oven dry in rotary kiln, obtain powder;
(d) grind sand and make ball: get a certain amount of SrCl
26H
2O is mixed and made into saturated solution with water, is added to uniformly in the powder that previous step obtains suddenly, grinds sand, and the powder that obtains adopts the disk pelletizing machine to make ball, obtains pelletizing;
(e) low-temperature sintering: with SrCl
26H
2O is for the reflection auxiliary agent, with pelletizing sintering in rotary kiln of the rapid gained of previous step;
(f) annealing waits comprehensive treating process: the sintering gained is carried out fragmentation, fine grinding, washing, press filtration, oven dry, pick powder, annealing, the gentle choosing of secondary pick powder.
The granularity that the described iron scale of processing step (a) is worn into powder is 4-8 μ m, and the pelletizing of described granulating disc granulation gained is of a size of 8- 16mm.
The temperature of the described rotary kiln of processing step (a) is 900 ℃-1100 ℃, kiln atmosphere O
2: 8-9%, reaction formula is: 2Fe
3O
4+ 1/2 O
2=3Fe
2O
3, described brown iron oxide granularity＜3 μ m;
Described brown iron oxide of processing step (b) and SrCO
3Be SrCO in molar ratio
3: Fe
2O
3=1: 4.5-6.0 prepares burden; Described ball mill adopts 8- 16mm steel ball, and material: steel ball: the mass ratio of water is 1: 4.5: 1; The ball milling time is 15-25 hour.
The described kiln temperature of processing step (c) is controlled at 850 ℃-1000 ℃.
The described SrCl of processing step (d)
26H
2The quality of O is 8% of step (c) gained powder total mass; The described stone roller sand time is 15-25 minute; Described pelletizing is of a size of 6- 16mm.
The described rotary kiln sintered temperature of processing step (e) is 900 ℃-1100 ℃, kiln atmosphere O
2: 8-10%, material sintering time are 5-8 hour, and reaction formula is: SrCO
3=SrO+CO
2↑; SrO+nFe
2O
3=SrOnFe
2O
3, n is a mole number.
Processing step of the present invention is reasonable in design, and adopting prepared bonding magnetic of the present invention and chlorinatedpolyethylene is that the opposite sex that main raw material makes is moulded magnetic, detects magnetic property more than YN13 trade mark standard through Ministry of Information Industry part of speech product quality supervision and inspection center; Adopting cheap iron iron scale is that the strontium ferrites bonding magnetic that raw material makes greatly reduces cost, improves the performance of product.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1:
The granulation oxidation and the ball milling of iron scale: adopt 1200- 4500mm ball mill that 10 tons of iron scales of raw material are become powder; granularity 4-8 μ m; use the granulating disc granulation then; pelletizing size 8- 16mm; the gained pelletizing is carried out the rotary kiln oxidation again; the temperature of rotary kiln is controlled at 900 ℃-1000 ℃, kiln atmosphere O
2: 8-9%, make the oxidation ball, with 1200- 4500mm ball mill the oxidation ball milling is become brown iron oxide again; Brown iron oxide granularity＜3 μ m, reaction formula is: 2Fe3O
4+ 1/2 O
2=3Fe
2O
3
Batching-mechanical chemical combination: brown iron oxide and 1.8 tons of SrCO that previous step is obtained suddenly
3Prepare burden, use water as medium again, mix the back and in 1200- 4500mm ball mill, carry out ball milling; Ball mill adopts 8- 16mm steel ball; Material: steel ball: water was pressed mass ratio 1: 4.5: 1; The ball milling time is 20 hours;
Press filtration, oven dry: the slurry that mechanical chemical combination is handled carries out press filtration, dries processing in drying kiln, and the drying kiln temperature is controlled at 850 ℃-1000 ℃, obtains powder;
Grind sand and make ball: the SrCl that gets ton
26H
2O is mixed and made into saturated solution for the reflection auxiliary agent with water, is added to uniformly in the powder that previous step obtains suddenly, grinds sand 20 minutes, and the powder that obtains adopts the disk pelletizing machine to make ball, obtains pelletizing, and pelletizing is of a size of 6- 16mm;
Low-temperature sintering: with the pelletizing of the rapid gained of previous step sintering 7 hours in rotary kiln, rotary kiln sintered temperature is 900 ℃-1100 ℃, kiln atmosphere O
2: 8-10%;
Comprehensive treating processs such as annealing: the sintering gained is carried out fragmentation, fine grinding, washing, press filtration, oven dry, pick powder, annealing, the gentle choosing of secondary pick powder.
The process of embodiment 2, embodiment 3, embodiment 4, embodiment 5 and embodiment 6 is identical with embodiment 1 with step, and concrete parameter is referring to table 1.
Table 1
| Title | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| The raw material iron scale | 10 tons | 10 tons | 10 tons | 20 tons | 20 tons |
| The SrCO that adds in " batching-mechanical chemical combination " process 3 | 1.6 ton | 1.8 ton | 1.7 ton | 3.4 ton | 3.5 ton |
| The ball milling time in " batching-mechanical chemical combination " process | 18 hours | 15 hours | 25 hours | 22 hours | 20 hours |
| " grind sand and make ball " SrCl that adds in the process 2·6H 2O | 0.7 ton | 0.9 ton | 1.0 ton | 1.6 ton | 1.8 ton |
| Sintering time in " low-temperature sintering " process | 7 hours | 6 hours | 5 hours | 8 hours | 7 hours |
Claims (7)
1. make the method for high-performance strontium ferrites bonding magnetic with iron scale for one kind, it is characterized in that comprising following processing step:
(a) the granulation oxidation and the ball milling of iron scale: ball mill is worn into powder with iron scale, uses the granulating disc granulation then, obtains pelletizing, carries out the rotary kiln oxidation again, makes the oxidation ball, with ball mill the oxidation ball milling is become brown iron oxide again;
(b) batching-mechanical chemical combination: brown iron oxide and SrCO that previous step is obtained suddenly
3Prepare burden by suitable proportion, use water as medium again, material, steel ball are mixed the back in ball mill, carry out ball milling with water;
(c) press filtration and oven dry: the slurry that mechanical chemical combination is handled carries out press filtration, in the oven dry kiln dry, obtains powder again;
(d) grind sand and make ball: get a certain amount of SrCl
26H
2O is a reaction promoter, is mixed and made into saturated solution with water, is added to uniformly in the powder that previous step obtains suddenly, grinds sand, and the powder that obtains adopts the disk pelletizing machine to make ball, obtains pelletizing;
(e) low-temperature sintering: with pelletizing sintering in rotary kiln of the rapid gained of previous step;
(f) annealing comprehensive treating process: the sintering gained is carried out fragmentation, fine grinding, washing, press filtration, oven dry, pick powder, annealing, the gentle choosing of secondary pick powder.
2. a kind of method of making high-performance strontium ferrites bonding magnetic with iron scale according to claim 1; it is characterized in that it is 4-8 μ m that the described iron scale of processing step (a) is worn into the granularity of powder, the pelletizing of described granulating disc granulation gained is of a size of 8- 16mm.
3. a kind of method with iron scale manufacturing high-performance strontium ferrites bonding magnetic according to claim 1, the temperature that it is characterized in that the described rotary kiln of processing step (a) is 900 ℃-1100 ℃, kiln atmosphere O
2: 8-9%, described brown iron oxide granularity＜3 μ m.
4. a kind of method with iron scale manufacturing high-performance strontium ferrites bonding magnetic according to claim 1 is characterized in that described brown iron oxide of processing step (b) and SrCO
3Be SrCO in molar ratio
3: Fe
2O
3=1: 4.5-6.0 prepares burden; Described ball mill adopts 8- 16mm steel ball, and material: steel ball: the mass ratio of water is 1: 4.5: 1; The ball milling time is 15-25 hour.
5. a kind of method with iron scale manufacturing high-performance strontium ferrites bonding magnetic according to claim 1 is characterized in that the described drying kiln temperature of processing step (c) is controlled at 850 ℃-1000 ℃.
6. a kind of method with iron scale manufacturing high-performance strontium ferrites bonding magnetic according to claim 1 is characterized in that the described SrCl of processing step (d)
26H
2The quality of O is the 6-10% of step (c) gained powder total mass; The described stone roller sand time is 15-25 minute, and described step (d) pelletizing is of a size of 6- 16mm.
7. a kind of method with iron scale manufacturing high-performance strontium ferrites bonding magnetic according to claim 1 is characterized in that the described rotary kiln sintered temperature of processing step (e) is 900 ℃-1100 ℃, kiln atmosphere O
2: 8-10%, material sintering time are 5-8 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031158625A CN1330604C (en) | 2003-03-14 | 2003-03-14 | Manufacture of high performance binding Sr ferrite magnet powder from iron scales |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031158625A CN1330604C (en) | 2003-03-14 | 2003-03-14 | Manufacture of high performance binding Sr ferrite magnet powder from iron scales |
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| Publication Number | Publication Date |
|---|---|
| CN1530345A CN1530345A (en) | 2004-09-22 |
| CN1330604C true CN1330604C (en) | 2007-08-08 |
Family
ID=34284471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031158625A Expired - Fee Related CN1330604C (en) | 2003-03-14 | 2003-03-14 | Manufacture of high performance binding Sr ferrite magnet powder from iron scales |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757235B (en) * | 2012-08-02 | 2014-01-01 | 武汉科技大学 | Permanent magnetic strontium-ferrite material powder and preparation method thereof |
| CN104261484B (en) * | 2014-09-29 | 2016-04-13 | 南京新中磁电技术工程有限公司 | A kind of iron scale oxidation treatment device |
| CN104987055B (en) * | 2015-07-06 | 2017-03-22 | 河北钢铁股份有限公司邯郸分公司 | Method for producing ferrite pre-sintering material through steelmaking dry dedusting fine ash |
| CN109437315B (en) * | 2018-12-04 | 2020-10-02 | 浙江安特磁材有限公司 | Preparation method of rubber-plastic ferrite magnetic powder |
| CN110372362A (en) * | 2019-07-15 | 2019-10-25 | 横店集团东磁股份有限公司 | A kind of preparation method and permanent-magnet ferrite material of permanent-magnet ferrite material |
| CN111370215B (en) * | 2020-01-06 | 2021-06-18 | 横店集团东磁股份有限公司 | Efficient method for manufacturing ferrite rubber-plastic magnetic powder |
| CN114188144A (en) * | 2021-12-08 | 2022-03-15 | 鞍山安特磁材有限公司 | Process for producing ZMS-71H magnetic powder |
| CN115745002A (en) * | 2022-11-22 | 2023-03-07 | 中国科学院宁波材料技术与工程研究所 | M-type strontium ferrite magnetic powder and preparation method thereof |
| CN115784732B (en) * | 2022-11-25 | 2023-09-05 | 中国科学院宁波材料技术与工程研究所 | Ce-Mn doped strontium ferrite and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196560A (en) * | 1997-04-17 | 1998-10-21 | 董仁祥 | Manufacturing method for ferrimagnet burn-in material |
-
2003
- 2003-03-14 CN CNB031158625A patent/CN1330604C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196560A (en) * | 1997-04-17 | 1998-10-21 | 董仁祥 | Manufacturing method for ferrimagnet burn-in material |
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| CN1530345A (en) | 2004-09-22 |
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