CN1392278A - Nickel-cobalt-iron alloy and its producing method - Google Patents
Nickel-cobalt-iron alloy and its producing method Download PDFInfo
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- CN1392278A CN1392278A CN 02111926 CN02111926A CN1392278A CN 1392278 A CN1392278 A CN 1392278A CN 02111926 CN02111926 CN 02111926 CN 02111926 A CN02111926 A CN 02111926A CN 1392278 A CN1392278 A CN 1392278A
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Abstract
The present invention relates to metallurgical technology, and the process of utilizing waste magnetic steel into Fe-Co-Ni alloy for producing magnetic steel. The Fe-Co-Ni alloy contains Fe 45-62 wt%, Co 15-40 wt%, Ni 10-25 wt% as well as Cu, C, Si, S and other components. It is produced with waste magnetic steel and/or waste Fe-Co-Ni alloy and its production includes the processes of hjigh temperature coarse smelting, to obtain alloy strip or liquid; refining the alloy strip or liquid to eliminate its carbon and harmful elements and obtain alloy liquid with the required composition; and pelletizing to obtain granulated Fe-Co-Ni alloy, which is used in magnetic steel production.
Description
Technical field:
The invention belongs to metallurgical class field, relate to permivar and production technology thereof.
Background technology:
The Casting Al-Ni-Co Magnet product is the important components and parts of electromechanical meters industry, and it is one of main users of nickel cobalt metal.But because nickel cobalt metal is China's important strategic stockpile, resource scarcity costs an arm and a leg, and is difficult to satisfy the demand of production development.
The contriver finds the waste slag that produces in the magnet steel production process in practice and the useless abrasive dust that produces during to the metalworking of magnet steel product accounts for the 10-20% of magnet steel output, wherein the nickel cobalt contents accounts for 20-30%, this is the precious resources that is worth very much the exploitation regeneration, " waste material " if of this a large amount of existence of not regeneration, it endangers the healthy of people with contaminate environment.
Summary of the invention:
Purpose of the present invention is exactly to utilize the useless grinding of the waste slag of magnet steel factory or magnet steel product or useless nickel, cobalt-base alloy as starting material, a kind of production technique is provided, produce unprecedented permivar, it can substitute pure nickel, pure cobalt, fine copper, pure iron, is used for cast magnetic steel production.
Permivar of the present invention is made up of Ni, Co, Fe, C, Cu, S and Si, and surplus is P, Mo, W, Cr, V and Mn.
The production method of above-mentioned permivar special use, its operation steps is as follows:
One, starting material apolegamy:
The useless magnet steel mill ash that gets when (1) getting metalworking magnet steel product divides its choosing, removes useless SiC, Al
2O
3Reach materials such as emery wheel ash, stay the magnetic alloy powder that useful Ni, Co, Fe, Cu etc. form, with these powder for drying and batching, batch mixing agglomeration then, agglomerate drying;
(2) get the useless magnet steel slag of magnet steel factory, after screening, classification magnetic separation, get alloy magnetic thing;
(3) get Ni, Co, the Fe alloy of scrapping.
Two, get a kind of in above-mentioned three kinds of starting material, or its combination sends into the thick furnace of high temperature and slightly refine, carry out decarburization and alloy and separate, make alloy bar or alloy liquid with slag.
Three, will send into the refining furnace refining by alloy bar or alloy liquid that second step obtained, further decarburization with slag former, obtains qualified alloy liquid.
Four, will send into granulating device by the 3rd step gained alloy liquid, obtain required particulate state permivar product.
Beneficial effect of the present invention:
Along with industrial development, steel refuse by magnetic is increasing, be present in society in a large number, polluted environmental health, the present invention has initiated a kind of production technique, utilizes steel refuse by magnetic, the very useful permivar that magnet steel is produced that is applicable to of regenerating, turn waste into wealth, have great economic benefit and social benefit.
Description of drawings:
Accompanying drawing is a technological process of production synoptic diagram.
Embodiment:
The percentage ratio of each composition weight content of permivar of the present invention:
Ni be 10-25, Co15-40, Fe45-62, C≤0.025, Cu＜4.0, Si≤0.1, S≤0.2 and surplus P, MO, W, Cr, each component of V, Mn be≤0.05.
The embodiment that is exclusively used in above permivar production method is as follows:
One, the starting material choosing divides:
1) will process the mill ash choosing branch that the magnet steel product obtains, the mill ash is based on magnet steel powder art, fineness≤200 orders account for more than 60%, wherein be mixed with nonmetallic impuritys such as 20-30% emery wheel bits, cooling oil, resin, quartz sand, adopt wet magnetic separation, its magneticstrength is 800-2000 Ao Sida, add an amount of dispersion agent, get required alloy magnetic substance, allow impure＜10%, recovery rate is 〉=95%.The metal-powder that will wet is dried to moisture content＜5%, adds 2-5% binding agent, slag former, adopts disk, drum pelletizer, pair roller briquetting press to make agglomerate behind the mixing, through≤200 ℃ of oven dry, pellet strength＞2 kilogram/single ball, drop number＞2 time/0.5 meter, moisture content＜1.0%;
2) with the slag of magnet steel factory after carse, medium and small screening, carry out magnetic separation, its magneticstrength is 800-2000 Ao Sida, selects and produces the required alloy magnetic thing of permivar, removes useless impurity;
3) a kind of or its combination of the magnetic thing that gets thick refining: with above-mentioned 1), 2) adds in the thick furnace, the thick desirable electric arc furnace of furnace, ore-smelting furnace or electroslag furnace, controlled temperature is 1550-1750 ℃ in the thick refining, with addition of flowability slag material preferably, suitably oxygen blast, making wherein, slag separates with Ni, Co iron alloy, and reach and fall C≤0.5%, remove harmful element, basically reach following requirement: i.e. Cr≤0.05%, Mn≤0.05%, V≤0.05%, Si≤0.1%, Ti＜0.1%, require recovery rate of iron 〉=95%, make Ni, Co, Fe alloy bar or alloy liquid;
4) refining: will by thick refine alloy bar or alloy liquid drop into refining in AOD or the VOD equipment, also can Ar, O be housed
2Carry out in the medium-frequency induction furnace of top bottom blowing (0.3-1 ton), refining requires further decarburization, really reaches the Ultra-low carbon requirement, and guarantees that harmful element content is up to standard fully, and the alloy fluid component and the content that obtain after the refining are met the demands fully;
5) alloy granulation: for guaranteeing the homogeneity of product composition, make things convenient for magnet steel production batching, alloy is supplied with particulate state (diameter is the 3-25 millimeter).The alloy liquid that refining gets pack into two-man ladle in (capacity is about 50kg), flow with 1kg/ second pours into not by (drum diameter is the 200-400 millimeter) on the adherent cylinder of molten steel, cylinder is immersed in the water of cooling pool, the cylindrical shell upper edge is a dried up 150-250 millimeter, cooling pool is 2 meters deeply, and volume is 3 meters
3, being provided with water cycle and adding new water device, cylinder is with 0.5-2 revolutions per second of rotation during granulation.
Also can adopt high pressure water towards shotting:
Granulation speed＜25 Kilograms Per Seconds, outlet hydraulic pressure＞294.2kpa, the internal circulating load 10-12 rice of water
3/ ton iron, amount of makeup water 2-3 rice
3/ ton iron, the granulation pond depth of water 〉=4 meters.
Claims (4)
1, permivar is characterized in that being made up of Ni, Co, Fe, C, Cu, S and Si, and its surplus is P, MO, W, Cr, V and Mn.
2, by the described permivar of claim 1, the percentage ratio that it is characterized in that each composition weight content is Ni10-25, Co15-40, Fe45-62, C≤0.025, Cu＜4.0, Si≤0.1, S＜0.2 and surplus P, MO, W, Cr, each component of V, Mn be≤and 0.05.
3, the production method of permivar special use, its characterization step is as follows:
One, starting material apolegamy:
The useless magnet steel mill ash that gets when (1) getting metalworking magnet steel product divides its choosing, removes useless material, stays the magnetic alloy powder that Ni, Co, Fe, C, Cu etc. form, and is dried, prepares burden, batch mixing agglomeration, agglomerate drying;
(2) get the useless magnet steel slag of magnet steel factory, after screening, classification magnetic separation, get the magnetic thing;
(3) get useless permivar.
Two, get above-mentioned 1), 2), 3) a kind of in three kinds, or send the thick furnace of high temperature slightly to refine behind its combination selection, carry out decarburization and alloy and separate with slag, make alloy bar or alloy liquid.
Three, alloy bar or alloy liquid are sent into the refining furnace refining, further decarburization with slag former, obtains to meet the alloy liquid of component concentration requirement;
Four, alloy liquid is sent into granulating device, obtain granular permivar product.
4, by the production method of the described permivar special use of claim 3, it is characterized in that comprising following content:
1) choosing divides to useless magnet steel mill ash, the mill ash is based on the magnet steel powder, fineness≤200 orders, account for more than 60%, be mixed with 20-30% emery wheel bits, cooling oil, resin, nonmetallic impuritys such as quartz sand adopt wet method to select magnetic, and magneticstrength is 800-2000 Ao Sida, and interpolation dispersion agent, get required magnetic substance, allow impure＜10%, recovery rate is 〉=95%, the metal powder that will wet is dried to moisture content＜5%, add binding agent, slag former, adopt disk behind the mixing, drum pelletizer, the pair roller briquetting press is made agglomerate, through≤200 ℃ of oven dry, and pellet strength＞2 kilogram/single ball, drop number＞2 time/0.5 meter, moisture content＜1.0%;
2) magnetic separation after dusting cover divides in thick with the magnet steel slag, its magneticstrength is 800-2000 Ao Sida, selects alloy magnetic thing, removes impurity;
3) with above-mentioned 1), 2) the magnetic thing or slightly refine with a kind of or its combination of the permivar that gives up, the thick desirable electric arc furnace of furnace or ore-smelting furnace or electroslag furnace, thick refining temperature is 1550-1750 ℃, slag material with addition of good fluidity, suitably oxygen blast, slag is separated with alloy, decarburization, make C≤0.5%, remove harmful element, the harmful element content requirement is reduced to Cr≤0.05%, Mn≤0.05%, V≤0.05%, Si≤0.1%, Ti＜0.1%, and recovery rate of iron 〉=95% makes alloy bar or alloy liquid;
4) after will slightly refining alloy bar or alloy liquid drop into refining in AOD or the VOD equipment, or Ar, O are being arranged
2Refining in the medium-frequency induction furnace of top bottom blowing in the hope of further decarburization, obtains to meet the alloy liquid of component concentration requirement;
5) alloy granulation; with after the refining alloy liquid pack into two-man ladle in (capacity is about 50 kilograms); speed with 1 Kilograms Per Second pours into not by on the adherent cylinder of molten steel; (drum diameter is the 200-400 millimeter); cylinder is immersed in the water of cooling pool; simplified upper edge is a dried up 150-250 millimeter, cooling pool is 2 meters deeply, volume is 3 meters
3, being provided with water cycle and adding new water device, cylinder is with 0.5-2 revolutions per second of rotation during granulation.
Also can adopt high pressure water towards shotting:
Granulation speed＜25 Kilograms Per Seconds, outlet hydraulic pressure＞294.2kpa, the water cycle amount is a 10-12 rice
3/ ton iron, amount of makeup water 2-3 rice
3/ ton iron, the granulation pond depth of water 〉=4 meters, the alloying pellet diameter of granulation is the 3-25 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021119260A CN1181215C (en) | 2002-05-31 | 2002-05-31 | Nickel-cobalt-iron alloy and its producing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021119260A CN1181215C (en) | 2002-05-31 | 2002-05-31 | Nickel-cobalt-iron alloy and its producing method |
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| Publication Number | Publication Date |
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| CN1392278A true CN1392278A (en) | 2003-01-22 |
| CN1181215C CN1181215C (en) | 2004-12-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432265C (en) * | 2006-12-30 | 2008-11-12 | 张勇 | Nickle chromium cobalt iron alloy and its smelting tech. process and equipment of blast furnace opening of blocking slag |
| CN107419155A (en) * | 2017-05-12 | 2017-12-01 | 郑州航空工业管理学院 | A kind of Fe Co are base single phase solid solution Fe Co Cu ternary alloy three-partalloys and preparation method thereof |
| CN109576611A (en) * | 2018-11-27 | 2019-04-05 | 牡丹江师范学院 | A kind of new material and production method of high magnetic property |
-
2002
- 2002-05-31 CN CNB021119260A patent/CN1181215C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432265C (en) * | 2006-12-30 | 2008-11-12 | 张勇 | Nickle chromium cobalt iron alloy and its smelting tech. process and equipment of blast furnace opening of blocking slag |
| CN107419155A (en) * | 2017-05-12 | 2017-12-01 | 郑州航空工业管理学院 | A kind of Fe Co are base single phase solid solution Fe Co Cu ternary alloy three-partalloys and preparation method thereof |
| CN107419155B (en) * | 2017-05-12 | 2018-10-23 | 郑州航空工业管理学院 | A kind of Fe-Co is base single phase solid solution Fe-Co-Cu ternary alloy three-partalloys and preparation method thereof |
| CN109576611A (en) * | 2018-11-27 | 2019-04-05 | 牡丹江师范学院 | A kind of new material and production method of high magnetic property |
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| Publication number | Publication date |
|---|---|
| CN1181215C (en) | 2004-12-22 |
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