CN103627901A - Nickel-copper containing silicon-based iron alloy for steelmaking and preparation method thereof - Google Patents
Nickel-copper containing silicon-based iron alloy for steelmaking and preparation method thereof Download PDFInfo
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- CN103627901A CN103627901A CN201310657163.2A CN201310657163A CN103627901A CN 103627901 A CN103627901 A CN 103627901A CN 201310657163 A CN201310657163 A CN 201310657163A CN 103627901 A CN103627901 A CN 103627901A
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Abstract
The invention provides a novel nickel-copper containing silicon-based iron alloy for steelmaking and a preparation method of the silicon-based iron alloy. The preparation method comprises the steps of adding oxidized ore and sulphide ore of nickel and copper according to the ratio in a silicon-based iron alloy furnace burden, using carbon as a reducing agent, and reducing the smelted nickel-copper containing silicon-based compound iron alloy in a reduction furnace. The silicon-based iron alloy is a compound iron alloy by taking silicon as a main ingredient in the alloy ingredients, containing 20-70% of silicon, the balance of iron, and further containing one or more of 5-30% of barium, calcium and aluminum, such as silicon iron, silicon barium iron, silicon aluminum barium iron, silicon calcium barium iron and the like. The silicon-based iron alloys containing one or two of 2-30% of nickel and copper are machined into the silicon-based iron alloy containing nickel and copper or nickel-copper. The nickel-copper containing silicon-based iron alloy is used for steelmaking deoxidation, desulfuration and alloying of nickel and copper, and has good economic benefits and social benefits.
Description
Technical field
Silica-based iron alloy and preparation method for making steel containing ambrose alloy of the present invention, belongs to chemical metallurgy technical field.
Background technology
Nickel, copper are the main alloy element materials of steel-making, are widely used in the alloying constituent of the steel grades such as weathering steel, structure iron, stainless steel.At present, steel-making nickel, the nickel of copper alloying, copper, all use pure metal.Due to these two kinds of material production complex process, high energy consumption, high pollution, expensive metal.Therefore, expensive, increase steel-making cost.Now is used for making steel nickelalloy at existing Rhometal, its raw materials used nickel oxide ore that is only limited to.Because raw material restriction makes ferronickel price more expensive; Also there is copper-iron alloy in market, and it is a kind of alloy, rather than steel-making furnace charge; Also have ambrose alloy iron alloy, it is made through secondary fusion with ambrose alloy waste material.Producing now nickel and copper is all that raw materials used is all sulphide ores, can not use oxidized ore with pyrometallurgical smelting.
Existing silica-based iron alloy is not nickeliferous and copper, and only deoxidation and the desulfurization for making steel still lacks steel-making at deoxidization desulfuration simultaneously, realizes the material of corronel.
Summary of the invention
The object of the invention is to make raw material with sulphide ores and the oxidized ore of ambrose alloy, in mineral hot furnace, by reduction method, produce a kind of silica-based iron alloy of nickeliferous, copper, complex ferroalloy for deoxidation in steel making, desulfurization and nickel, copper alloying, instead of pure metallic nickel and copper, reach energy-saving and emission-reduction, reduce the object of steel-making cost.
The present invention is nickeliferous, the preparation method of the silica-based iron alloy of copper, nickel sulfide ore or nickel oxide ore and copper-sulphide ores or copper oxide ore (containing tantalite power) is raw materials used with silica-based iron alloy, with reductive agent-carbon etc., in its ratio, mix and make furnace charge, drop into reducing and smelting in ore-smelting furnace and make.Nickel, copper and compound physico-chemical property thereof are very close, for producing corronel, provide technical foundation.The sulphide ores copper smelting of copper of take is example: cupric sulfide (CuS) is when furnace temperature reaches more than 500 ℃, and cupric sulfide is decomposed into cuprous sulfide, i.e. 4CuS → 2Cu
2s+S
2.cuprous sulfide, more than 1150 ℃, is oxidized to CuO.Sulphur in ore and oxygen generate sulfurous gas and overflow.Only have and transfer cupric sulfide to cupric oxide, just can carry out reducing and smelting.Cupric oxide is at more than 1150 ℃ High Temperature Furnaces Heating Apparatus Inner formation reaction, i.e. 4CuO=2Cu
2o+O
2.cupric oxide is decomposed into Red copper oxide, and its reduction temperature reaches more than 2100 ℃, could be reduced to copper by carbon, produces comparatively difficulty.In alloy of the present invention, the elements such as siliceous, iron, barium, they and copper form alloy reduction temperature and are down to 1800 ℃ of left and right, comparatively easily produce.The sulphide ores of nickel is also same principle, no longer separately tells.The sulfide of nickel, copper (sulphide ores) is 1500 ℃ of following decomposition of fusing point under the high temperature of mineral hot furnace, and oxidation generates nickel oxide and copper gradually.Sulphur in sulphide ores generates sulfurous gas and becomes air scavenge, and a part and iron etc. are in conjunction with carrying out in slag.At reduction temperature, reach more than 1800 ℃, under the effect of carbon, nickel oxide, copper resolve into metal and silicon, iron etc. and form alloy, become elemental composition nickeliferous, the silica-based iron alloy of copper.
Nickeliferous and copper component is lower in the mineral of nickeliferous, copper, do not reach when the requirement of the silica-based iron alloy composition of ambrose alloy, the mineral of available nickel, copper are made ice nickel, matte (existing maturation process), then with silica-based iron alloy furnace charge, by proportioning condiment, then carry out reducing and smelting.The same ferrosilicon of production work used. most of nickel minerals and copper mine are mineral intergrowth, often claim cu-ni sulphide ore, in nickel minerals, containing a small amount of copper, contain a small amount of nickel in copper mine.Therefore, containing in the silica-based iron alloy of ambrose alloy, also can contain a small amount of nickel or copper.The sulphide ores of ambrose alloy and oxidized ore or tantalite power are before molten the white silk, and drying, fragmentation, screening etc. add reductive agent and flux, as lime after processing. Wingdale. and fluorite etc., roasting in rotary kiln.Make in mineral that moisture is down to 3%, desulfurization 20--30%(mass percent, as follows), be conducive at electrosmelting.Sinter process is with present ambrose alloy ore deposit sinter process.
Can mineral directly be dropped in electric furnace and be smelted without roasting, but power consumption be higher while smelting.
Of the present invention containing in the silica-based iron alloy of ambrose alloy, the nickel that contains 2%-30% and one or both in copper.Silica-based iron alloy refers to siliceous 20%--70%, and surplus is iron and impurity, can also be containing one or more in the barium of 5%--30%, calcium, aluminium, as alloys such as ferrosilicon, silicon barium iron, Si-Al-Ba-Fe, silicon barium calcium iron.In these silica-based iron alloys, containing one or both in nickel, copper, is exactly of the present invention containing the silica-based iron alloy of ambrose alloy.As nisiloy iron, nisiloy barium iron, copper ferrosilicon, copper silicon barium iron, ambrose alloy silicon barium iron etc.
Embodiment
Below by specific embodiment explanation the present invention.
Embodiment 1
Ratio of components: take 100kg silica as basis, containing SiO
298%.Barite is containing BaSO
485%, 50kg.Pentlandite contains Ni 34%, Cu 5%, Fe29%, S 30%, 50kg, and coke is containing C 82%, 90kg.Wingdale 90Kg, furnace size 5-40 ㎜.These furnace charges are mixed by proportioning, drop in mineral hot furnace and smelt about 2 hours and come out of the stove, scarfing cinder casting mold.Ton power consumption 9200kw
.h.Produce continuously.
Through chemically examining silicon barium Rhometal composition:
Si 45%, Ba 21%, Ni 16%, Cu 2%, and impurity has C 0.3%, S 0.05%, P 0.03%, and surplus is Fe.
Embodiment 2
Ratio of components: silica 100kg, barite 55kg, roasting chalcopyrite are containing Cu 29%, Fe 23%, Ni 9%, S 11%, 50kg, coke 90kg, lime 8Kg.Above-mentioned furnace charge by its proportioning, is mixed, drop in mineral hot furnace reducing and smelting 2 hours, come out of the stove, scarfing cinder, casting mold.
Silicon barium cunife composition:
Si 43%, Ba 15%, Cu 19%, Ni 6%, surplus is Fe and impurity.
Embodiment 3
Ratio of components: silica 100kg, barite 50kg, roasting pentlandite 20kg, roasting chalcopyrite 50kg, Wingdale 10Kg coke 100kg.Above-mentioned furnace charge is mixed by proportioning, drop in mineral hot furnace and smelt about 2 hours, come out of the stove, scarfing cinder, casting mold.
Silicon barium ambrose alloy iron alloy composition:
Si 38%, Ba 19%, Cu 15%, Ni 7%, surplus is Fe and impurity.
Embodiment 4
Ratio of components: silica 100kg, barite 50kg, tenorite 60kg, containing CuO 72%, high ice nickel 50kg is containing Ni 70%, and steel cuttings 5kg, unslaked lime 50kg, drop in mineral hot furnace by proportioning containing CaO 80%. coke 110kg ', smelts about 2.5 hours and come out of the stove.Ton power consumption 11000kw
.h.
Silicon barium calcium ambrose alloy iron alloy composition:
Si 31%, Ba 14%, Ca 6%, Ni 19%, Cu 18%, surplus is Fe and impurity.
Embodiment 5
Certain steel mill produces * 70 pipe line steels, and former ferro-aluminum 4kg deoxidation for ton steel, adds nickel 2kg, copper 2kg, silico-calcium 1kg, and ton steel closes 350 yuan of left and right of Renminbi; With the embodiment of the present invention 4 silicon barium calcium ambrose alloy iron alloys, ton 6kg deoxidation for steel, desulfurization, corronelization synchronously complete, and ton steel closes 330 yuan of left and right of Renminbi, and ton steel is saved 20 yuan of left and right, and steel quality reaches GB requirement.
Claims (4)
1. silica-based iron alloy and the preparation method for making steel containing ambrose alloy, its technical characterictic is: in silica-based iron alloy, the nickel that contains 2%-30% mass percent and one or both in copper.
2. the silicon that contains 20%--70% mass percent in the silica-based iron alloy described in, surplus is iron and inevitable impurity.
3. in silica-based iron alloy, also can contain one or more in the barium, calcium, aluminium of 5%--30% mass percent.
4. for making steel containing the silica-based iron alloy of ambrose alloy and preparation method, its technical characterictic is: the preparation method who contains as described in claim 1 the silica-based iron alloy of ambrose alloy, it is by the raw material of the oxide mineral of nickel and copper or sulfide mineral, by proportioning, add in the furnace charge of silica-based iron alloy, carbon is made reductive agent, by reduction method, in electric reduction furnace, smelts and makes.
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| CN103627901A true CN103627901A (en) | 2014-03-12 |
| CN103627901B CN103627901B (en) | 2016-02-24 |
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Citations (8)
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|---|---|---|---|---|
| SU541891A1 (en) * | 1975-10-27 | 1977-01-05 | Институт Проблем Литья Ан Украинской Сср | Ligature |
| SU565073A1 (en) * | 1975-09-15 | 1977-07-15 | Институт Проблем Литья Ан Украинской Сср | Alloy |
| SU565074A1 (en) * | 1975-11-10 | 1977-07-15 | Институт Проблем Литья Ан Украинской Сср | Alloy |
| SU765387A1 (en) * | 1978-08-28 | 1980-09-23 | Институт Проблем Литья Ан Украинской Сср | Modifier |
| SU876762A1 (en) * | 1979-11-16 | 1981-10-30 | Институт проблем литья АН УССР | Modifier |
| CN1396288A (en) * | 2002-06-21 | 2003-02-12 | 武进市武帆合金铝有限公司 | NiCuSiFe alloy |
| CN1436872A (en) * | 2002-02-05 | 2003-08-20 | 盛国大 | Fragile Ni-Fe alloy |
| CN101812590A (en) * | 2010-04-15 | 2010-08-25 | 上海海事大学 | Method for producing Al-Si-Cu alloy by electric heating method |
-
2013
- 2013-12-09 CN CN201310657163.2A patent/CN103627901B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU565073A1 (en) * | 1975-09-15 | 1977-07-15 | Институт Проблем Литья Ан Украинской Сср | Alloy |
| SU541891A1 (en) * | 1975-10-27 | 1977-01-05 | Институт Проблем Литья Ан Украинской Сср | Ligature |
| SU565074A1 (en) * | 1975-11-10 | 1977-07-15 | Институт Проблем Литья Ан Украинской Сср | Alloy |
| SU765387A1 (en) * | 1978-08-28 | 1980-09-23 | Институт Проблем Литья Ан Украинской Сср | Modifier |
| SU876762A1 (en) * | 1979-11-16 | 1981-10-30 | Институт проблем литья АН УССР | Modifier |
| CN1436872A (en) * | 2002-02-05 | 2003-08-20 | 盛国大 | Fragile Ni-Fe alloy |
| CN1396288A (en) * | 2002-06-21 | 2003-02-12 | 武进市武帆合金铝有限公司 | NiCuSiFe alloy |
| CN101812590A (en) * | 2010-04-15 | 2010-08-25 | 上海海事大学 | Method for producing Al-Si-Cu alloy by electric heating method |
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