CN104630566A - Ferro-nickel alloy and preparation method thereof - Google Patents
Ferro-nickel alloy and preparation method thereof Download PDFInfo
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- CN104630566A CN104630566A CN201510064491.0A CN201510064491A CN104630566A CN 104630566 A CN104630566 A CN 104630566A CN 201510064491 A CN201510064491 A CN 201510064491A CN 104630566 A CN104630566 A CN 104630566A
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Abstract
The invention discloses a ferro-nickel alloy and a preparation method thereof. The ferro-nickel alloy comprises the following components in percentage by weight: 38-50% of Ni, 0.8-1.5% of C, 0.5-1.5% of Si, 0.03-0.10% of P, 0.01-0.05% of S, 1-2.5% of Cr, 0.5-1.0% of Co and the balance of Fe. The preparation method comprises the steps of (1) mixing and pelleting; (2) reducing; (3) smelting, namely firstly carrying out solid phase sintering on the a metalized pellet at the temperature of 1000-1350 DEG C for 4-6 days, further heating to 1500-1750 DEG C, and smelting for 1-3 hours to obtain crude ferro-nickel alloy; and (4) refining, namely refining the crude ferro-nickel alloy, adding basic oxide accounting for 2.5-3.5% of the weight of the crude ferro-nickel alloy while refining to obtain refined molten ferro-nickel, and then, pouring to obtain a refined ferro-nickel alloy product, wherein the refining temperature is 1500-1700 DEG C, the refining period is 30-50 minutes, and the oxygen blowing quantity is 100-200Nm<3>/t. The ferro-nickel alloy and the preparation method thereof have the advantages that the prepared ferro-nickel alloy is high in density and purity and good in strength, toughness and wear resistance; and the preparation method is simple, low in production cost and remarkable in energy-saving and emission-reduction effects.
Description
Technical field
The present invention relates to technical field of iron alloy, particularly relate to a kind of Rhometal and preparation method thereof.
Background technology
Iron alloy, add in molten iron as reductor, element additive etc. a kind of product making steel possess certain characteristic or reach certain requirement when the iron alloy of broad sense refers to steel-making, iron and one or more elementary composition master alloys, be mainly used in smelting iron and steel.Nickel can be melt into Rhometal with iron, forms the light alloy of high strength, has a wide range of applications in every respect.The domestic traditional method producing Rhometal from the nickel oxide ore of nickeliferous 1.5-2.5% mainly adopts nickel minerals to sinter at present, solvent is made with lime, make reductive agent with coke in ore-smelting furnace, to carry out selective reduction obtain Rhometal product, use for production stainless steel, its traditional processing technology more complicated, production efficiency is low, sintering circuit coke consumption is high, lime is easily efflorescence in process of production, coke price is expensive, costly, pollutes large.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of Rhometal and preparation method thereof be provided, the Rhometal density of preparation and purity high, intensity, toughness and wear resistance are good, and preparation method is simple, and production efficiency is high, and production cost is low, effects of energy saving and emission reduction is remarkable.
The present invention adopts following technical scheme to achieve these goals:
A kind of Rhometal, its composition content is by weight percentage: Ni 38-50%, C 0.8-1.5%, Si 0.5-1.5%, P 0.03-0.10%, S 0.01-0.05%, Cr 1-2.5%, Co 0.5-1.0%, surplus are iron.
The homogeneity on described Rhometal surface is less than 5%.
The surface brightness of described Rhometal is one-level light.
The preparation method of described Rhometal, comprises the following steps:
(1) batch mixing, pressure ball: nickel oxide ores being crushed to granularity is below 10mm, then the coal dust of its weight 5-10%, the caking agent of 0.8-1.5%, the lime powder of 3-5%, the water rose vitriol mixing of 0.5-1.0% is added, be pressed into pelletizing, control pelletizing moisture at 8-10%;
(2) reduce: obtain metallized pellet by carrying out reduction in the pelletizing made feeding rotary hearth furnace, reduction temperature is 1300-1500 DEG C, and the recovery time is 1-3 hour;
(3) melting: metallized pellet is first carried out solid state sintering 4-6 hour at 1000-1350 DEG C of temperature, then continues to be heated to 1500-1750 DEG C and carry out melting 1-3 hour, obtain thick Rhometal;
(4) refining: thick Rhometal is adopted the refining of AOD refining furnace, add the basic oxide of its weight 2.5-3.5% during refining, obtain smart ferronickel water, refining temperature is 1500-1700 DEG C, and refining cycle is 30-50min/ stove, and blowing oxygen quantity is 100-200Nm
3/ t, then obtain Refining Nickel ferroalloy productor through casting.
Caking agent described in step (1) is water glass or PVA.
Described in step (4), basic oxide are Wingdale, fluorite.
Compared with the prior art, beneficial effect of the present invention is as follows:
Rhometal of the present invention and preparation method thereof, the Rhometal density of preparation and purity high, intensity, toughness and wear resistance are good, preparation method is simple, and production efficiency is high, coal blending powder pelletizing in raw material, recovery time is short, and energy consumption is low, and dust is few, the useful element rate of recovery is high, adopt two-step sintering method during melting, control the distortion of Rhometal when melting, improve the various performance requriements such as density, purity, internal microstructure of Rhometal, production cost is low, and effects of energy saving and emission reduction is remarkable.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but the present invention is not limited only to these embodiments, and under the prerequisite not departing from present inventive concept, any improvement done all drops within protection scope of the present invention.
Embodiment 1:
A kind of Rhometal, its composition content is by weight percentage: Ni 38-50%, C 0.8-1.5%, Si 0.5-1.5%, P 0.03-0.10%, S 0.01-0.05%, Cr 1-2.5%, Co 0.5-1.0%, surplus are iron.The homogeneity on described Rhometal surface is less than 5%, and surface brightness is one-level light.
The preparation method of described Rhometal, comprises the following steps:
(1) batch mixing, pressure ball: nickel oxide ores being crushed to granularity is below 10mm, then the coal dust of its weight 5-10%, the caking agent of 0.8-1.5%, the lime powder of 3-5%, the water rose vitriol mixing of 0.5-1.0% is added, be pressed into pelletizing, control pelletizing moisture 8%; Described caking agent is water glass.
(2) reduce: obtain metallized pellet by carrying out reduction in the pelletizing made feeding rotary hearth furnace, reduction temperature is 1300 DEG C, and the recovery time is 3 hours;
(3) melting: metallized pellet is first carried out solid state sintering 6 hours at 1000 DEG C of temperature, then continues to be heated to 1500 DEG C and carry out melting 3 hours, obtain thick Rhometal;
(4) refining: thick Rhometal is adopted the refining of AOD refining furnace, add the basic oxide of its weight 2.5-3.5% during refining, obtain smart ferronickel water, refining temperature is 1500 DEG C, and refining cycle is 50min/ stove, and blowing oxygen quantity is 100Nm
3/ t, then obtain Refining Nickel ferroalloy productor through casting.Described basic oxide are Wingdale, fluorite.
Embodiment 2:
A kind of Rhometal, its composition content is by weight percentage: Ni 38-50%, C 0.8-1.5%, Si 0.5-1.5%, P 0.03-0.10%, S 0.01-0.05%, Cr 1-2.5%, Co 0.5-1.0%, surplus are iron.
The preparation method of described Rhometal, comprises the following steps:
(1) batch mixing, pressure ball: nickel oxide ores being crushed to granularity is below 10mm, then the coal dust of its weight 5-10%, the caking agent of 0.8-1.5%, the lime powder of 3-5%, the water rose vitriol mixing of 0.5-1.0% is added, be pressed into pelletizing, control pelletizing moisture 10%; Described caking agent is PVA.
(2) reduce: obtain metallized pellet by carrying out reduction in the pelletizing made feeding rotary hearth furnace, reduction temperature is 1500 DEG C, and the recovery time is 1 hour;
(3) melting: metallized pellet is first carried out solid state sintering 4 hours at 1350 DEG C of temperature, then continues to be heated to 1750 DEG C when carrying out melting 1, obtains thick Rhometal;
(4) refining: thick Rhometal is adopted the refining of AOD refining furnace, add the basic oxide of its weight 2.5-3.5% during refining, obtain smart ferronickel water, refining temperature is 1700 DEG C, and refining cycle is 30min/ stove, and blowing oxygen quantity is 200Nm
3/ t, then obtain Refining Nickel ferroalloy productor through casting.Described basic oxide are Wingdale, fluorite.
Claims (6)
1. a Rhometal, is characterized in that: its composition content is by weight percentage: Ni 38-50%, C 0.8-1.5%, Si 0.5-1.5%, P 0.03-0.10%, S 0.01-0.05%, Cr 1-2.5%, Co 0.5-1.0%, surplus are iron.
2. Rhometal according to claim 1, is characterized in that: the homogeneity on described Rhometal surface is less than 5%.
3. Rhometal according to claim 1, is characterized in that: the surface brightness of described Rhometal is one-level light.
4. a preparation method for Rhometal as claimed in claim 1, is characterized in that: comprise the following steps:
(1) batch mixing, pressure ball: nickel oxide ores being crushed to granularity is below 10mm, then the coal dust of its weight 5-10%, the caking agent of 0.8-1.5%, the lime powder of 3-5%, the water rose vitriol mixing of 0.5-1.0% is added, be pressed into pelletizing, control pelletizing moisture at 8-10%;
(2) reduce: obtain metallized pellet by carrying out reduction in the pelletizing made feeding rotary hearth furnace, reduction temperature is 1300-1500 DEG C, and the recovery time is 1-3 hour;
(3) melting: metallized pellet is first carried out solid state sintering 4-6 hour at 1000-1350 DEG C of temperature, then continues to be heated to 1500-1750 DEG C and carry out melting 1-3 hour, obtain thick Rhometal;
(4) refining: thick Rhometal is adopted the refining of AOD refining furnace, add the basic oxide of its weight 2.5-3.5% during refining, obtain smart ferronickel water, refining temperature is 1500-1700 DEG C, and refining cycle is 30-50min/ stove, and blowing oxygen quantity is 100-200Nm
3/ t, then obtain Refining Nickel ferroalloy productor through casting.
5. the preparation method of Rhometal according to claim 4, is characterized in that: the caking agent described in step (1) is water glass or PVA.
6. the preparation method of Rhometal according to claim 4, is characterized in that: described in step (4), basic oxide are Wingdale, fluorite.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648323A (en) * | 2016-01-13 | 2016-06-08 | 铜陵百荣新型材料铸件有限公司 | Ferronickel material and preparation technique thereof |
| CN106191433A (en) * | 2016-08-12 | 2016-12-07 | 金堆城钼业股份有限公司 | A kind of ball press technique of small grain size molybdenum-iron |
| CN107604265A (en) * | 2017-10-27 | 2018-01-19 | 湖州正德轻工机械有限公司 | Wear-resisting dilval |
| CN113528928A (en) * | 2021-07-15 | 2021-10-22 | 山西太钢不锈钢股份有限公司 | Iron-nickel base alloy continuous casting billet for precision strip steel and production method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386950A (en) * | 2008-10-17 | 2009-03-18 | 河北上大再生资源科技有限公司 | Nickel iron intermediate alloy and melting and purification treatment method thereof |
| CN101495663A (en) * | 2006-02-02 | 2009-07-29 | 蒂森克鲁普德国联合金属制造有限公司 | Iron-nickel alloy |
| CN102776451A (en) * | 2012-08-08 | 2012-11-14 | 山西太钢不锈钢股份有限公司 | Nickel-iron spectrum standard sample and preparation method thereof |
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2015
- 2015-02-06 CN CN201510064491.0A patent/CN104630566B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101495663A (en) * | 2006-02-02 | 2009-07-29 | 蒂森克鲁普德国联合金属制造有限公司 | Iron-nickel alloy |
| CN101386950A (en) * | 2008-10-17 | 2009-03-18 | 河北上大再生资源科技有限公司 | Nickel iron intermediate alloy and melting and purification treatment method thereof |
| CN102776451A (en) * | 2012-08-08 | 2012-11-14 | 山西太钢不锈钢股份有限公司 | Nickel-iron spectrum standard sample and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| TECHNICAL COMMITTEE ISO/TC 155,NICKEL AND NICKEL ALLOY: "《ISO 6501:1988(E) Ferronickel-Specification and delivery requirements》", 1 December 1988 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648323A (en) * | 2016-01-13 | 2016-06-08 | 铜陵百荣新型材料铸件有限公司 | Ferronickel material and preparation technique thereof |
| CN106191433A (en) * | 2016-08-12 | 2016-12-07 | 金堆城钼业股份有限公司 | A kind of ball press technique of small grain size molybdenum-iron |
| CN107604265A (en) * | 2017-10-27 | 2018-01-19 | 湖州正德轻工机械有限公司 | Wear-resisting dilval |
| CN113528928A (en) * | 2021-07-15 | 2021-10-22 | 山西太钢不锈钢股份有限公司 | Iron-nickel base alloy continuous casting billet for precision strip steel and production method thereof |
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Effective date of registration: 20180814 Address after: 410000 room 24045, Zhongtian Plaza, 766 Wuyi Road, Furong district, Changsha, Hunan Patentee after: Hunan Zhongwei Holding Group Co., Ltd. Address before: 244199 14a24 14, Tongling big market, lion mountain area, Tongling, Anhui. Patentee before: Tongling hundred flourish type material foundry goods company limited |
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