CN108396102A - The method of electric furnace smelting special steel molten steel - Google Patents
The method of electric furnace smelting special steel molten steel Download PDFInfo
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- CN108396102A CN108396102A CN201810522886.4A CN201810522886A CN108396102A CN 108396102 A CN108396102 A CN 108396102A CN 201810522886 A CN201810522886 A CN 201810522886A CN 108396102 A CN108396102 A CN 108396102A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5264—Manufacture of alloyed steels including ferro-alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0025—Adding carbon material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a kind of methods of electric furnace smelting special steel molten steel, belong to iron and steel smelting technology field.The present invention improves molten steel cleanliness, provides a kind of method of electric furnace smelting special steel molten steel, including dispensing, electric furnace smelting and tapping pre-deoxidation step to realize the environmentally protective smelting of special steel electric furnace low cost.It is all smelted using steel scrap when the method for the present invention dispensing, is not incorporated molten iron and/or the pig iron, realize the environmentally protective smelting of special steel molten steel electric furnace low cost；Carbon dust is blown into molten steel simultaneously using electric stove wall carbon rifle and fire door carbon rifle, the content of the deoxidation products in the addition and molten steel of deoxidier can be reduced, molten steel cleanliness is improved, carburetting can also be played the role of by needing the medium high carbon special steel molten steel of carburetting to be blown excessive carbon dust smelting.
Description
Technical field
The invention belongs to iron and steel smelting technology fields, and in particular to a kind of method of electric furnace smelting special steel molten steel.
Background technology
Existing electric furnace Melting of Special Steels technology is in terms of burden structure, mainly to greatly improve molten iron and/or pig iron ratio, even
It pursues electric furnace and produces converter, electric furnace molten iron and/or pig iron proportioning reach 30~80%, cause ton steel pig iron consumption to increase, smelting
Pig iron making process long flow path is refined, a large amount of concentrate, the energy, the consumption of new water and increase exhaust gas, waste water, waste residue, solid are needed
Emission；While molten iron and/or the pig iron are largely used, mixed carbon comtent is high in steel, leads to CO, CO in smelting process2Gas emissions
Greatly.Electric furnace work is reduced using the series techniques measure such as furnace wall burner and spray gun, reinforcing oxygen, optimization power supply in terms of electric furnace smelting
Sequence consumes, but the above technology mainly rely on greatly improve molten iron and/or the pig iron than material condition realize, have no based on entirely
Scrap smelting, using the heat of oxidation after be blown the skill of carbon dust into molten steel simultaneously by electric stove wall carbon rifle and fire door carbon rifle
Art reaches the content of the deoxidation products in the addition and molten steel that reduce deoxidier, improves the mesh of molten steel cleanliness and carburetting
's.
In terms of electric furnace smelting special steel taps pre-deoxidation, corresponding deoxidation is added according to tapping terminal C content in prior art
Agent, but due to every stove steel smelting condition difference, in the case of same endpoint C content, there is also differences for oxygen content in steel；It presses out
Corresponding deoxidier, which is added, in steel terminal C content can cause deoxidation bad or cross deoxidation, influence quality of molten steel or cause deoxidier
Waste.
China's electric furnace smelting steel grade is based on excellent special steel, during electric furnace smelting special steel, main smelting process still with
Molten iron and/or pig iron ratio are greatly improved, or even pursues electric furnace and produces converter, although production efficiency can be improved, reduce steelmaker
Sequence energy consumption and production cost, but be to run in the opposite direction with the original intention of furnace energy-saving emission reduction advantage is given full play to.
Currently, how China plays electric steel section to steel industry sustainable development and Green Development pay attention to day by day
The market competition advantage that electric furnace smelting special steel is improved while energy environment-friendly advantage realizes that low cost is green in electric furnace smelting special steel field
Colour circle, which is protected, to be smelted, it has also become the new problem in electric furnace smelting special steel field, but solution is not yet received in the problem at present.
Invention content
The present invention improves molten steel cleanliness, provides one to realize the environmentally protective smelting of special steel molten steel electric furnace low cost
The method of kind of electric furnace smelting special steel molten steel, including dispensing, electric furnace smelting and tapping pre-deoxidation step, the batching step be：Entirely
Portion carries out dispensing using steel scrap, and control C is 0.4wt%~2wt%；The electric furnace smelting step is：By the furnace charge prepared and refining
Steel is packed into required slag making materials in electric furnace, is powered to smelting to the heat of oxidation and be terminated, then stops power transmission, utilize electric stove wall carbon rifle
Carbon dust is blown into molten steel with fire door carbon rifle, for feeding temperature-raising to smelting endpoint, thermometric, sampling, which meet, smelts steel grade after spraying carbon
After tapping requires, carry out determining oxygen；The tapping pre-deoxidation step is：After electric furnace smelting, it is de- that aluminium ingot is added in tapping process
Oxygen agent.
Wherein, the method for electric furnace smelting special steel molten steel described above, in electric furnace smelting step, the carbonaceous amount of the carbon dust
Content >=96%.
Wherein, the method for electric furnace smelting special steel molten steel described above, in electric furnace smelting step, electric stove wall carbon rifle and stove
The injection total amount of door carbon rifle injection carbon dust is 2.5~8kg/t molten steel.
Wherein, the method for electric furnace smelting special steel molten steel described above, in electric furnace smelting step, electric stove wall carbon rifle and stove
The injection flow of door carbon rifle is 1600~1800Nm3/h。
Wherein, the method for electric furnace smelting special steel molten steel described above, in electric furnace smelting step, fire door carbon rifle is equal by carbon dust
It is even to be blown the place that be blown to furnace wall carbon rifle.
Wherein, the method for electric furnace smelting special steel molten steel described above, tap pre-deoxidation step in, the aluminium ingot deoxidier
Addition depending on determining endpoint molten steel oxygen content obtained by oxygen, be specifically added as follows：Aluminium ingot deoxidier addition=
The unit of (12.5~18.8) kg/t steel × endpoint molten steel oxygen content, aluminium ingot deoxidier addition is kg/t molten steel.
Wherein, the method for electric furnace smelting special steel molten steel described above, tap pre-deoxidation step in, the endpoint molten steel oxygen
Content is 0.06~0.12%.
The beneficial effects of the invention are as follows：
The method of the present invention is all smelted using steel scrap, is not incorporated molten iron and/or the pig iron, it is possible to reduce concentrate disappears
Consumption can reduce discharge exhaust gas, waste water, waste residue, solid emission, can also prevent high-content than using the pig iron to save the energy, Xin Shui
Harmful element P, S enter in molten steel, process takes off P, S burden after mitigation, realizes the environmentally protective smelting of special steel molten steel electric furnace low cost
Refining；It is blown carbon dust into molten steel simultaneously using electric stove wall carbon rifle and fire door carbon rifle, the addition and molten steel of deoxidier can be reduced
In deoxidation products content, improve molten steel cleanliness, need the medium high carbon special steel of carburetting to be blown excessive carbon dust also smelting
It can play the role of carburetting；Determine the addition that oxygen Oxygen Content in Liquid Steel carries out deoxidier according to terminal, is ensureing that deoxygenation of liquid steel is good
While reduce deoxidier consumption, reduce production cost.
Specific implementation mode
Specifically, the method for electric furnace smelting special steel molten steel, including dispensing, electric furnace smelting and tapping pre-deoxidation and etc., institute
Stating batching step is：Dispensing is all carried out using steel scrap, control C is 0.4wt%~2wt%；The electric furnace smelting step is：It will
The furnace charge and steel-making prepared is packed into required slag making materials in electric furnace, is powered to smelting to the heat of oxidation and be terminated, then stops power transmission, profit
Carbon dust is blown into molten steel with electric stove wall carbon rifle and fire door carbon rifle, feeding temperature-raising to smelting endpoint, thermometric takes after spraying carbon
After sample meets smelting steel grade tapping requirement, carry out determining oxygen；The tapping pre-deoxidation step is：After electric furnace smelting, tapping
Aluminium ingot deoxidier is added in process.
In batching step described in the method for the present invention, dispensing is all carried out using steel scrap, is not incorporated molten iron and/or the pig iron, root
Often use 1 ton of steel scrap that can reduce the consumption of 1.7 tons of concentrate according to measuring and calculating, it, can than using 60% energy of pig iron saving, 40% new water
Reduce discharge exhaust gas 86%, waste water 76%, waste residue 72%, solid emission (barren rock and tailing of the part containing mine) 97%；No
It is incorporated molten iron and/or the pig iron, can prevent harmful element P, S of high-content in molten iron and/or the pig iron from entering in molten steel, work after mitigation
Sequence takes off P, S burden；This field routine steel scrap can be used in the steel scrap, such as reducing slag steel, shearing steel scrap, CrNiMo croppings, society
Steel scrap, cold rolling trimming, CrNiMo are cut off, more than G50 notes etc..
In addition, dispensing also requires control C 0.4%~2%, avoid in steel that carbon content is too low to lead to Fe quilts in smelting process
A large amount of oxidation, while also avoiding in steel that carbon content is excessively high, it results in the need for additionally being incorporated molten iron and/or the pig iron to reach carburetting
Purpose；Carbon content is low in steel, and the exhaust gas of generation is less, while not using molten iron and/or the pig iron, cancels ironmaking production technique stream
Journey realizes that short route is smelted, and reduces concentrate consumption, saves the energy, Xin Shui, reduces exhaust gas, waste water, waste residue and solid discharge
Object；Since special steel type in the art is more, all kinds of special steels require difference to elemental composition, therefore according to institute's steelmaking kind when dispensing
It is required that control other elements, it is desirable that other elements are after electric furnace smelting no more than the regulation for smelting steel grade technical conditions.
After dispensing, the furnace charge prepared and the required slag making materials of steel-making are packed into electric furnace, ability can be used in slag making materials
Domain routine materials, such as lime and dolomite.
In the method for the present invention electric furnace smelting step, it can terminate to aoxidize as C in steel and P content satisfaction smelting steel grade requirement
Phase；Terminate when the C, P content and temperature of molten steel meet to smelt steel grade and require to smelt, into tapping pre-deoxidation step.It is described
Carbon mass content >=96% of carbon dust, remaining is inevitable impurity；To ensure that carbon dust is fully contacted with molten steel, increase and steel
Liquid reacts the area of deoxidation, while carbon-oxygen generated reactive gas being made to promote steel inclusion floating agitation molten pool, starts to spray carbon
Afterwards, fire door carbon rifle and furnace wall carbon rifle press 1600~1800Nm simultaneously3/ h flows carry out spray carbon, until injection total amount be 2.5~
Until the carbon dust of 8kg/t molten steel has been blown.
In the method for the present invention, it can ensure what the uniform injection of carbon dust can not be blown to furnace wall carbon rifle using fire door carbon rifle
Place ensures that the carbon dust injection of entire electric furnace molten bath is uniform.
The carbon dust of carbon content >=96% is sprayed into after terminating using oxidation into molten steel, can react and reach with the oxygen in molten steel
The purpose of pre-deoxidation can reduce the content of the deoxidation products in the addition and molten steel of deoxidier；It is special simultaneously for medium high carbon is smelted
Steel sprays into excessive carbon dust, and carburetting can also be carried out to molten steel while achieving the purpose that pre-deoxidation.
The present invention taps in pre-deoxidation step, and aluminium ingot deoxidier addition is added according to oxygen endpoint molten steel oxygen content is determined
Enter, the consumption of deoxidier is reduced while ensureing that deoxygenation of liquid steel is good；The addition of the aluminium ingot deoxidier is according to determining oxygen institute
Depending on obtaining endpoint molten steel oxygen content, specifically it is added as follows：Aluminium ingot deoxidier addition=(12.5~18.8) kg/t steel
The unit of × endpoint molten steel oxygen content, aluminium ingot deoxidier addition is kg/t molten steel, and the unit of endpoint molten steel oxygen content is %；Its
In, endpoint molten steel oxygen content is 0.06~0.12%.When calculating aluminium ingot deoxidier addition, endpoint molten steel oxygen content is only fetched
Value, by taking embodiment 1 as an example, molten steel oxygen content is 0.068%, then aluminium ingot deoxidier addition is 14.7kg/t steel × 0.068=
1.0kg/t steel；The molten steel of pre-deoxidation by this field routine subsequent handling smelt and be can be obtained after addition aluminium ingot deoxidier
Special steel product.
Below by embodiment, invention is further described in detail, but does not therefore limit the scope of the present invention
Among the embodiment described range.
Embodiment 1
Carbon special steel molten steel during electric furnace oxidizing process smelts 4340：
Dispensing is mainly made of reducing slag steel, shearing steel scrap, CrNiMo croppings and social steel scrap, be not incorporated molten iron and/
Or the pig iron, mixed carbon comtent 0.8%, other elements are after electric furnace smelting no more than the regulation for smelting steel grade technical conditions；
The furnace charge prepared and the required slag making materials of steel-making are packed into electric furnace, normally smelted extremely by the prior art after energization
The heat of oxidation terminates, and then stops power transmission, and it is 98% that carbon content is blown into molten steel using electric stove wall carbon rifle and fire door carbon rifle
Carbon dust, it is 5kg/t molten steel that carbon dust, which is blown total amount, and electric stove wall carbon rifle and fire door carbon rifle injection flow are 1700Nm3/ h, fire door carbon
Carbon dust is uniformly blown the place that can not be blown to furnace wall carbon rifle by rifle, and feeding temperature-raising is surveyed to smelting endpoint after spraying carbon
Temperature, sampling, which meet to smelt to stretch into electric furnace molten bath from electric furnace doorway using apparatus for determination of oxygen after steel grade tapping requires, to be carried out determining oxygen, is surveyed
Obtain molten steel oxygen content 0.068%；
After electric furnace smelting, oxygen Oxygen Content in Liquid Steel is determined according to terminal, by deoxidier addition formula, in tapping process plus
Enter aluminium ingot deoxidier 1.0kg/t molten steel.
In the present embodiment, often used 1 ton of steel scrap that can reduce the consumption of 1.7 tons of concentrate according to measuring and calculating, than using pig iron section
60% energy, 40% new water are saved, discharge exhaust gas 86%, waste water 76%, waste residue 72%, solid emission (portion containing mine can be reduced
The barren rock and tailing divided) 97%；Aluminium ingot deoxidier addition reduces 1.5kg/t molten steel.
Embodiment 2
Electric furnace oxidizing process smelts S44SY high-carbon special steel molten steel：
Dispensing is all made of shearing steel scrap, is not incorporated molten iron and/or the pig iron, mixed carbon comtent 0.6%, and other elements are passed through
No more than the regulation for smelting steel grade technical conditions after electric furnace smelting；
The furnace charge prepared and the required slag making materials of steel-making are packed into electric furnace, normally smelted extremely by the prior art after energization
The heat of oxidation terminates, and then stops power transmission, and it is 98% that carbon content is blown into molten steel using electric stove wall carbon rifle and fire door carbon rifle
Carbon dust, it is 8kg/t molten steel that carbon dust, which is blown total amount, and electric stove wall carbon rifle and fire door carbon rifle injection flow are 1800Nm3/ h, fire door carbon
Carbon dust is uniformly blown the place that can not be blown to furnace wall carbon rifle by rifle, and feeding temperature-raising is surveyed to smelting endpoint after spraying carbon
Temperature, sampling, which meet to smelt to stretch into electric furnace molten bath from electric furnace doorway using apparatus for determination of oxygen after steel grade tapping requires, to be carried out determining oxygen, is surveyed
Obtain molten steel oxygen content 0.08%；
After electric furnace smelting, oxygen Oxygen Content in Liquid Steel is determined according to terminal, by deoxidier addition formula, in tapping process plus
Enter aluminium ingot deoxidier 1.5kg/t molten steel.
In the present embodiment, often used 1 ton of steel scrap that can reduce the consumption of 1.7 tons of concentrate according to measuring and calculating, than using pig iron section
60% energy, 40% new water are saved, discharge exhaust gas 86%, waste water 76%, waste residue 72%, solid emission (portion containing mine can be reduced
The barren rock and tailing divided) 97%；Aluminium ingot deoxidier addition reduces 1.0kg/t molten steel.
Embodiment 3
Electric furnace oxidizing process smelts G50 low-carbon special steel molten steel：
Dispensing mainly by cold rolling trimming, CrNiMo cropping and G50 note more than form, be not incorporated molten iron and/or the pig iron, match carbon
Amount is 0.5%, and other elements are after electric furnace smelting no more than the regulation for smelting steel grade technical conditions；
The furnace charge prepared and the required slag making materials of steel-making are packed into electric furnace, normally smelted extremely by the prior art after energization
The heat of oxidation terminates, and then stops power transmission, and it is 98% that carbon content is blown into molten steel using electric stove wall carbon rifle and fire door carbon rifle
Carbon dust, it is 3kg/t molten steel that carbon dust, which is blown total amount, and electric stove wall carbon rifle and fire door carbon rifle injection flow are 1600Nm3/ h, fire door carbon
Carbon dust is uniformly blown the place that can not be blown to furnace wall carbon rifle by rifle, and feeding temperature-raising is surveyed to smelting endpoint after spraying carbon
Temperature, sampling, which meet to smelt to stretch into electric furnace molten bath from electric furnace doorway using apparatus for determination of oxygen after steel grade tapping requires, to be carried out determining oxygen, is surveyed
Obtain molten steel oxygen content 0.118%；
After electric furnace smelting, oxygen Oxygen Content in Liquid Steel is determined according to terminal, by deoxidier addition formula, in tapping process plus
Enter aluminium ingot deoxidier 2.2kg/t molten steel.
In the present embodiment, often used 1 ton of steel scrap that can reduce the consumption of 1.7 tons of concentrate according to measuring and calculating, than using pig iron section
60% energy, 40% new water are saved, discharge exhaust gas 86%, waste water 76%, waste residue 72%, solid emission (portion containing mine can be reduced
The barren rock and tailing divided) 97%；Aluminium ingot deoxidier addition reduces 0.8kg/t molten steel.
Claims (7)
1. the method for electric furnace smelting special steel molten steel, including dispensing, electric furnace smelting and tapping pre-deoxidation step, it is characterised in that：
The batching step is：Dispensing is all carried out using steel scrap, control C is 0.4wt%~2wt%；
The electric furnace smelting step is：The furnace charge prepared and the required slag making materials of steel-making are packed into electric furnace, is powered and smelts extremely
The heat of oxidation terminates, and then stops power transmission, carbon dust is blown into molten steel using electric stove wall carbon rifle and fire door carbon rifle, after spraying carbon
Feeding temperature-raising after thermometric, sampling meet smelting steel grade tapping requirement, carries out determining oxygen to smelting endpoint；
The tapping pre-deoxidation step is：After electric furnace smelting, aluminium ingot deoxidier is added in tapping process.
2. the method for electric furnace smelting special steel molten steel according to claim 1, it is characterised in that：In electric furnace smelting step, institute
State carbon mass content >=96% of carbon dust.
3. the method for electric furnace smelting special steel molten steel according to claim 1, it is characterised in that：In electric furnace smelting step, electricity
The injection total amount of stove furnace wall carbon rifle and fire door carbon rifle injection carbon dust is 2.5~8kg/t molten steel.
4. the method for electric furnace smelting special steel molten steel according to claim 1, it is characterised in that：In electric furnace smelting step, electricity
The injection flow of stove furnace wall carbon rifle and fire door carbon rifle is 1600~1800Nm3/h。
5. the method for electric furnace smelting special steel molten steel according to claim 1, it is characterised in that：In electric furnace smelting step, stove
Carbon dust is uniformly blown the place that can not be blown to furnace wall carbon rifle by door carbon rifle.
6. the method for electric furnace smelting special steel molten steel according to claim 1, it is characterised in that：In pre-deoxidation step of tapping,
The addition of the aluminium ingot deoxidier is specifically added as follows depending on determining endpoint molten steel oxygen content obtained by oxygen：Aluminium ingot
The unit of deoxidier addition=(12.5~18.8) kg/t steel × endpoint molten steel oxygen content, aluminium ingot deoxidier addition is kg/t
Molten steel.
7. the method for electric furnace smelting special steel molten steel according to claim 6, it is characterised in that：The endpoint molten steel oxygen content
It is 0.06~0.12%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810522886.4A CN108396102A (en) | 2018-05-28 | 2018-05-28 | The method of electric furnace smelting special steel molten steel |
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| CN201810522886.4A CN108396102A (en) | 2018-05-28 | 2018-05-28 | The method of electric furnace smelting special steel molten steel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109355459A (en) * | 2018-11-26 | 2019-02-19 | 抚顺特殊钢股份有限公司 | A kind of all solid state material method of smelting of electric arc furnaces |
| CN110983081A (en) * | 2019-12-19 | 2020-04-10 | 无锡隆达金属材料有限公司 | Method for preparing ultra-low oxygen cupronickel by adopting vacuum melting equipment |
| CN111471827A (en) * | 2020-04-03 | 2020-07-31 | 湖南华菱涟源钢铁有限公司 | Method for controlling titanium content in smelted silicon steel to be less than or equal to 15ppm |
| CN112760449A (en) * | 2020-12-22 | 2021-05-07 | 鞍钢铸钢有限公司 | Smelting method of slag steel used by Consteel electric furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717840A (en) * | 2009-12-30 | 2010-06-02 | 安阳钢铁股份有限公司 | Electric furnace steel-making method utilizing like graphite to replace pig iron to match with carbon |
| CN207031488U (en) * | 2017-06-30 | 2018-02-23 | 江阴兴澄特种钢铁有限公司 | A kind of carbon dust blowing device for reducing electric furnace molten steel terminal oxygen position |
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2018
- 2018-05-28 CN CN201810522886.4A patent/CN108396102A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717840A (en) * | 2009-12-30 | 2010-06-02 | 安阳钢铁股份有限公司 | Electric furnace steel-making method utilizing like graphite to replace pig iron to match with carbon |
| CN207031488U (en) * | 2017-06-30 | 2018-02-23 | 江阴兴澄特种钢铁有限公司 | A kind of carbon dust blowing device for reducing electric furnace molten steel terminal oxygen position |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109355459A (en) * | 2018-11-26 | 2019-02-19 | 抚顺特殊钢股份有限公司 | A kind of all solid state material method of smelting of electric arc furnaces |
| CN109355459B (en) * | 2018-11-26 | 2020-09-18 | 抚顺特殊钢股份有限公司 | All-solid material smelting method for electric arc furnace |
| CN110983081A (en) * | 2019-12-19 | 2020-04-10 | 无锡隆达金属材料有限公司 | Method for preparing ultra-low oxygen cupronickel by adopting vacuum melting equipment |
| CN110983081B (en) * | 2019-12-19 | 2021-08-20 | 江苏隆达超合金股份有限公司 | Method for preparing ultra-low oxygen cupronickel by adopting vacuum melting equipment |
| CN111471827A (en) * | 2020-04-03 | 2020-07-31 | 湖南华菱涟源钢铁有限公司 | Method for controlling titanium content in smelted silicon steel to be less than or equal to 15ppm |
| CN112760449A (en) * | 2020-12-22 | 2021-05-07 | 鞍钢铸钢有限公司 | Smelting method of slag steel used by Consteel electric furnace |
| CN112760449B (en) * | 2020-12-22 | 2022-10-25 | 鞍钢铸钢有限公司 | Smelting method of slag steel used by Considel electric furnace |
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