CN103938081A - Nickel-copper-iron alloy used for steel making and a preparation method - Google Patents
Nickel-copper-iron alloy used for steel making and a preparation method Download PDFInfo
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- CN103938081A CN103938081A CN201310657483.8A CN201310657483A CN103938081A CN 103938081 A CN103938081 A CN 103938081A CN 201310657483 A CN201310657483 A CN 201310657483A CN 103938081 A CN103938081 A CN 103938081A
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Abstract
The invention discloses a nickel-copper-iron alloy used for steel making. A preparation method is characterized in that nickel sulfide and copper sulphide ore (containing ore fine flour) are taken as raw materials, squama iron and a flux are taken as a desulfurizer. A one-step fire method is employed for melting the nickel-copper-iron alloy in a smelting furnace, the amount of the desulfurizer is determined in the way that the ratio of sulfur content in the sulfuration ore to oxygen content of squama iron and the flux is 1: 0.3-0.8, and the ratio of squama iron to the flux is 1: 1-5. Sulfur in nickel and copper and iron can be removed, and iron of mineral for the alloy can be reserved simultaneously. Alloying of nickel-copper can be realized when steel is manufactured, and the steel output is increased. Carbon fuel with 5-10% of total amount of furnace charge is added in a furnace charge. The alloy contains 2-50% of nickel and copper, and the balance is iron and inevitable impurity. The method also can be used for producing an alloy of cooper-iron and nickel-iron, which is an alloying agent for steel-making. The nickel-copper-iron taken as the alloying agent for making steel can reduce the steel cost. The nickel-copper-iron alloy has good economic benefit and social benefit.
Description
Technical field
The present invention is ambrose alloy iron alloy and the preparation method for making steel, and belongs to chemical metallurgy technical field.
Background technology
Nickel and copper belong to nonferrous heavy metal, on their physico-chemical property, smelting technology, mineral wealth, are all quite similar, and with being all steelmaking alloy element, they can form alloy with silicon, iron etc. again again.This manufacture to research and production nickel and copper provides favourable condition and scientific basis.
The production method that they produce ambrose alloy iron with ore or concentrate is more, has summed up pyrogenic process and the large class of wet method two.Pyrogenic process is produced nickel and copper is main method, more than accounting for 80% (quality is as follows) of ambrose alloy output.The pyrogenic process technological process of production of nickel, copper sulfurized ore: the first step, the roasting of sulphide ores/concentrate; Second step is smelted into nickel matte or copper matte regulus in smelting furnace, is the compound of nickel or copper, iron and sulphur; The 3rd step, bessemerizes and removes sulphur, iron and other impurity, produces thick nickel or blister copper; The 4th step, electrorefining is produced electric nickel, copper.
At present, except pyrogenic process is produced nickel, copper, still there is additive method.As Rhometal, be to produce by carbothermic method, raw material used is only limited to nickel oxide ore and silicate nickel minerals; Also the ambrose alloy iron alloy that has pyrogenic process to produce, it is to make flux with lime and the iron in mineral than 0.25--0.5%, siliceous 5% in alloy, this alloy is to use in without silicon steel and low-silicon steel.In the iron alloy of steel-making, siliceous is impurity below 5%.If use this alloy in steel-making, must carry out silica removal processing comprehensively; Also the technology having is a pyrometallurgical smelting blister copper, is impure more with the blister copper of lime or the production of lime masonry sweetening agent.Must electrolysis could use in steel-making; On market, also have ambrose alloy iron alloy now, it is to make a kind of alloy with the waste material secondary remelting of pure metal.Owing to yielded poorly by resource limit, price is not cheap yet.The reasons such as nickel, copper and alloy that above-mentioned technology is produced be because impurity is more, and production cost is high, and price is more expensive not yet can be used in steel-making, still make alloying constituent with pure metallic nickel and copper at present.
Summary of the invention
The object of the invention is to add flux desulfurization with squama iron, a step pyrogenic process is produced ambrose alloy iron alloy, for webbite, and the nickel of instead of pure metal and copper.Production technique is simple, and production cost is low, can create better economic benefit and social benefit.
The ambrose alloy iron alloy that the present invention produces, makes raw material with the sulphide ores (concentrate) of ambrose alloy, (contains FeO, Fe with squama iron
2o
3, Fe
3o
4) and flux (as: lime, Wingdale, calcium carbide, fluorite etc.), be used in conjunction with and make sweetening agent.In smelting furnace (as blast furnace, reverberatory furnace, electric furnace etc.), single stage method melting ambrose alloy iron alloy.While making raw material with oxidized ore, their oxidized ore, through sulfidation roasting processing, then is carried out to pyrometallurgical smelting.
The present invention produces ambrose alloy iron with sulphide ores, and its principle is: cupric sulfide (CuS), nickelous sulfide (NiS), 500 DEG C of left and right, generate cuprous sulfide (Cu
2s), vulcanize sub-nickel (Ni
2s) be 4CuS → 2Cu
2s+S
2and 4NiS → 2 Ni
2s+S
2.Cuprous sulfide and the sub-nickel of sulfuration are more than 1150 DEG C time, and the oxygen in squama iron and flux is combined with the sulphur that cuprous sulfide vulcanizes in sub-nickel, generate sulfurous gas effusion, and copper is combined generating nickel copper-iron alloy with iron.That is: Cu
2s+Ni
2s+2FeO=2FeCuNi+SO
2↑.
Squama iron and flux are used in conjunction with sweetening agent, and one, increase the activity of Strong ferric oxide, improve squama iron sweetening power, two, oxygen in flux in oxide compound also participates in desulfurization, three, slag fluidity is good.Want sulfur-bearing too high (>=20%) in sulphide ores, large by squama iron amount, make in copper-iron alloy iron content too high.At this moment can use less squama iron, add flux, reduce the iron level in alloy.Squama iron and flux proportioning, should change according to the content of iron in sulphide ores and sulphur.Between the ratio 1--5 of squama iron and flux.
Sulphur content in nickel sulfide ore used (containing fine ore) or cupric sulfide (containing fine ore), the ratio that adds the oxygen level in flux with squama iron is 1:0.3--0.8.In furnace charge, also to add the carbonaceous fuel of 5%-10%, as coal, coke etc.
Nickel is similar to the physics and chemistry behavior of copper, and mineralogical property is similar, and production technique is basic identical, can form alloy with iron again.Nickel, copper mine mostly are mineral intergrowth, contain a small amount of copper in nickel minerals, contain a small amount of nickel in copper mine, claim ambrose alloy sulphide ores.Therefore, in alloy, contain a small amount of nickel or copper.The composition that will improve nickel in alloy, can increase nickel minerals consumption.The composition that will improve copper in alloy, can increase copper mine consumption, and making alloy is ambrose alloy iron alloy.
Improve nickel or copper content in alloy, while not reaching alloying constituent with nickel, copper mine and tantalite power, can select ice nickel or matte to substitute their mineral.
Can carry out secondary remelting with copper iron or ferronickel and metallic copper, nickel, make ambrose alloy iron alloy.
At present, production of copper, nickel technique are: sulphide ores raw material is dropped in smelting furnace, produce compound---ice nickel or the matte of nickel or copper, iron, sulphur.Matte or ice nickel are dropped into converter melting, be blown into oxygen-rich air and remove the sulphur in matte or ice nickel, make blister copper or thick nickel.In desulfurization simultaneously, a large amount of iron in matte or ice nickel and a small amount of steel-making such as cobalt, chromium useful element oxidation by air are become to slag removal.Material for steel-making is kind of a wasting of resources.The present invention is used in conjunction with squama iron and flux, only sloughs the sulphur in matte or ice nickel, and retaining iron can increase output of steel.Meanwhile, converter removing impurities and refining two procedures have been omitted again.
In some nickel minerals, do not contain copper, in copper mine, do not contain nickel, or containing trace, available preparation method of the present invention, produces ferronickel or copper-iron alloy, for copper alloy and the nickelalloy of making steel.
In a word, the present invention makes raw material with nickel sulfide ore or copper-sulphide ores (containing tantalite power), coordinate and make sweetening agent with squama iron and flux, add the ratio 1:0.3--0.8 of the oxygen level in flux according to sulphur content in sulphide ores used and squama iron, the ratio of squama iron and flux is between 1:1-5.One step pyrometallurgical smelting ferronickel, copper iron or ambrose alloy iron alloy.In alloy, contain 2%-50% nickel and copper, surplus is iron and inevitable impurity.Summation≤4% of silicon, carbon, sulphur, phosphorus in impurity.If when sulfur-bearing >=0.5%, can add sodium carbonate, sodium hydroxide, sodium-chlor to carry out the processing such as sulphur removal in liquation bag in alloy, existing maturation process.
One step pyrometallurgical smelting ambrose alloy iron alloy is identical with pyrogenic process production matte.
Embodiment
Below by specific embodiment explanation the present invention.In embodiment, dry, the roasting of nickel, copper ore concentrates, kneading and melting equipment and operating procedure and production nickel, copper are identical, so detailed description no longer in an embodiment.
Embodiment 1
Charge composition: brass concentrate (CuFeS
2) 100kg, containing Cu 29%, Fe 25%, S 31%, Ni 3%, SiO
26%.Squama iron 50kg, approximately containing Fe
2o
320%, Fe
3o
450%, FeO 40%, contains oxygen total amount 17% in squama iron.Lime 20kg.Contain oxygen 6% left and right containing CaO 82%, calcium oxide.Coke 10kg, returning charge 100kg.Mix, in input closed blast furnace, melting is about 1 hour.The casting mold of coming out of the stove, through chemical examination alloying constituent:
Cu 35%, Fe 61%, Ni 2%, impurity 2%.In impurity, S 0.04%, Si 1.5%, C 0.5%, P 0.03%, also have micro-Ni, Co, Cr etc.SO
2collect.
Embodiment 2
Charge composition: sintering nickel yellow iron ore concentrate [(FeNi)
9s
8] 100kg, containing Ni 32%, Cu 2%, Fe 31%, S 30%.Returning charge 100kg, squama iron 10kg, Wingdale 50kg, coal grain 15kg.Above-mentioned furnace charge is mixed, drop into melting in closed blast furnace.
Alloying constituent: Ni 41%, Fe 52%, Cu 3%, total impurities 4%.
Embodiment 3
Charge composition: low nickel matte 100kg, containing Ni 17%, Cu 4%, Fe 47%, S 24%.Chalcopyrite 50kg, containing Cu 29%, Fe 25%, S 31%.Return furnace charge 120kg, squama iron 10kg, lime 60kg, nut coke 15kg.Furnace charge is mixed, drop into melting in closed blast furnace, chemical examination alloying constituent: the Ni 21% that comes out of the stove, Cu 20%, Fe 57%, all the other are impurity.Also can make raw material with matte and ice nickel, melting ambrose alloy iron alloy.
Embodiment 4
Charge composition: copper sulfide concentrate 100kg, containing Cu 23%, Fe 28%, S 29%, returning charge 100kg, squama iron 20kg, Wingdale 60kg, coke 25kg.Furnace charge is mixed, drop into melting in reverberatory furnace.Come out of the stove chemical examination alloying constituent: Cu 42%, Fe 55%, all the other are impurity.
Embodiment 5
The copper iron 100kg that charge composition: embodiment 1 produces, metallic nickel 30kg.Drop into electrosmelting of intermediate frequency, chemical examination alloying constituent: the Ni 23% that comes out of the stove, Cu 28%, surplus is Fe and impurity.
Embodiment 6
Certain steel mill produces X70 pipe line steel, and former ton steel adds metallic nickel 1.9kg, metallic copper 1.8kg, close 2800 yuan of left and right of Renminbi, with the embodiment of the present invention 3 ambrose alloy iron alloys, ton steel adds 9.5kg, close 2750 yuan of Renminbi, ton steel reduces costs 50 yuan, and ton steel increases output 6kg.
Claims (5)
1. ambrose alloy iron alloy and the preparation method for making steel, its technical characterictic is: in ambrose alloy iron alloy, the nickel that contains 2%-50% mass percent and copper, surplus is iron and inevitable impurity.
2. ambrose alloy iron alloy and the preparation method for making steel, its technical characterictic is: the preparation method of copper ambrose alloy iron alloy as claimed in claim 1, it is to make raw material with the sulphide ores of nickel, copper or tantalite power, adds flux make sweetening agent with squama iron.
3. to add the ratio of oxygen level in flux according to sulphur content in sulphide ores used and squama iron be 1:0.3--0.8 to the consumption of sweetening agent, and the ratio of squama iron and flux is between 1:1-5.
4. in smelting furnace, pyrometallurgical smelting is made copper iron, ferronickel, ambrose alloy iron alloy.
5. ambrose alloy iron alloy and the preparation method for making steel, its technical characterictic is: the preparation method of ambrose alloy iron alloy described in claim 2, also can be used for copper iron and Rhometal and produce.
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| CN103938081B CN103938081B (en) | 2015-12-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115747542A (en) * | 2022-11-02 | 2023-03-07 | 中南大学 | Method for preparing Fe-Ni-Co-Cu high-entropy alloy by reducing nickel blowing slag |
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| JPH0625793A (en) * | 1992-07-08 | 1994-02-01 | Kobe Steel Ltd | Fe-cu-ni compound powder for powder metallurgy and its manufacture as well as sintered body using the same powder |
| CN101250658A (en) * | 2008-03-28 | 2008-08-27 | 常州武帆合金有限公司 | Nickel copper alloy |
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| CN101892423A (en) * | 2010-07-29 | 2010-11-24 | 大连理工大学 | Cu-containing Fe-Ni stainless steel alloy |
| CN101935796A (en) * | 2008-10-17 | 2011-01-05 | 河北上大再生资源科技有限公司 | Ni14 nickel-iron intermediate alloy |
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2013
- 2013-12-09 CN CN201310657483.8A patent/CN103938081B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3846185A (en) * | 1968-09-11 | 1974-11-05 | Mitsubishi Electric Corp | Method of producing semi-hard magnetic ni-cu-fe alloys and the resulting product |
| JPH0456752A (en) * | 1990-06-26 | 1992-02-24 | Tokin Corp | Manufacture of alloy material having high barkhausen effect and alloy wire rod for magnetic wire pulser using the same |
| JPH0625793A (en) * | 1992-07-08 | 1994-02-01 | Kobe Steel Ltd | Fe-cu-ni compound powder for powder metallurgy and its manufacture as well as sintered body using the same powder |
| CN101250658A (en) * | 2008-03-28 | 2008-08-27 | 常州武帆合金有限公司 | Nickel copper alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115747542A (en) * | 2022-11-02 | 2023-03-07 | 中南大学 | Method for preparing Fe-Ni-Co-Cu high-entropy alloy by reducing nickel blowing slag |
| CN115747542B (en) * | 2022-11-02 | 2023-11-07 | 中南大学 | Method for preparing Fe-Ni-Co-Cu high-entropy alloy by reducing nickel converting slag |
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