CN109136463A - The distribution and smelting process of a kind of full scrap smelting of electric furnace and a kind of graphite pressure ball - Google Patents
The distribution and smelting process of a kind of full scrap smelting of electric furnace and a kind of graphite pressure ball Download PDFInfo
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- CN109136463A CN109136463A CN201811188102.5A CN201811188102A CN109136463A CN 109136463 A CN109136463 A CN 109136463A CN 201811188102 A CN201811188102 A CN 201811188102A CN 109136463 A CN109136463 A CN 109136463A
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- electric furnace
- smelting
- pressure ball
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- 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
- C21C5/527—Charging of the electric furnace
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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
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- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention belongs to iron and steel smelting technology fields, specifically provide a kind of graphite pressure ball, constituent, according to weight percent, amorphous graphite mine 85-95%, bentonite 1-5%, industrial dextrin 1-11%.In the distribution of the full scrap smelting of electric furnace, replaced and using graphite pressure ball and steel scrap part all instead of pig iron to match with carbon.After carrying out ingredient, using following steel making working procedure: EBT electric furnace-LF refining furnace-VD vacuum drying oven-middle billet continuous casting produces graphite pressure ball technology using pressure ball adhesion technique, can replace pig iron to match with carbon in the full scrap smelting of electric furnace.Program Sustainable use resource, has also purified environment, and can produce the high quality graphite products of steel-making demand.Pig iron to match with carbon is replaced using graphite briquetting in the full scrap smelting of electric furnace simultaneously, is directly loadable into steel scrap batch can, by controlling the smelting process of power transmission, slag making, oxygen blast system, successfully instead of pig iron to match with carbon.
Description
Technical field
The invention belongs to iron and steel smelting technology field, a kind of graphite pressure ball is specifically provided, and uses the graphite pressure ball
The distribution of the full scrap smelting of electric furnace as raw material, while additionally providing a kind of based on smelter used by the ingredient
Skill.
Background technique
The generally existing bulk density of graphite material, intensity are low, and quality fluctuation is big, especially in production, storage, transport, use
In the process, a large amount of powders, dust are generated, environment is seriously polluted, at the same in STEELMAKING PRODUCTION because technique require need bulk material into
Row processing and forming just can guarantee with carbon effect.In future gradually reducing with iron ore resource, the gradually increasing of scrap resources
It is more, the full scrap smelting of electric furnace in investment, resource (including soil), the energy (including iron ore, coking coal etc.) and energy conservation and environmental protection, can hold
Supervention exhibition etc. all has advantage.As the cry of low-carbon economy in world wide is higher and higher and national about energy-saving ring
Protect etc. relevant policies implementation, electric furnace short route smelt development will mainly around raw material and the energy two in terms of be unfolded.It uses
It will be mini-mill steelmaking trend that graphite pressure ball, which replaces pig iron to match with carbon, thoroughly change dependence of the mini-mill steelmaking to the pig iron.For useless
Steel Market Situation and company's entirety molten iron equilibrium of stock, company do not have extra hot metal supply Special Steel Works, and steel scrap price reduction compares
Greatly, full scrap smelting is needed, mutually in requisition for supplying pig iron to match with carbon.But pig iron resource is nervous, and price Continued, steel scrap
With molten iron price difference is per ton reaches 1000 yuan or more, cause smelting cost to increase.
Electric furnace production link is few, and process is short, and feedstock processing process is more much simpler than long process, with the progress of furnace technology
With the shortening of smelting process time, energy consumption can also further decline and replace ore production same with 1,000,000 t steel scraps according to analysis
Steel, 350,000 t of coking coal can be saved.Energy conservation is that electric furnace route has market competitiveness one of the major reasons.
Source of iron used in electric furnace steel making mainly includes the steel scraps substitute such as scrap iron and steel and the pig iron, direct reduced iron, cementite.
In recent years, electric furnace hot metal charge (30%~50%) also achieves industrialized production, it may be said that modern electric stove steely iron source is
According to the latest estimated of world steel association, the charging stock for electric furnace in 2l century will be to give up diversified in 100% steel scrap and 100%
Between steel substitute, the mixture of various different proportions.
The pollutant 80% of iron and steel enterprise's discharge is from links such as coking, sintering.Electric steelmaking process is due to directly using
Steel scrap makees raw material, or even can all use steel scrap as raw metal, all too many levels polluted is directly eliminated, by many
The favor of iron and steel enterprise.Calculate according to environment specialist, exhaust gas 86% can be reduced with steel scrap direct steelmaking ratio iron ore iron-making and steel-making,
Waste water 76% and waste residue 97%, are conducive to clean manufacturing and waste discharge minimizing.
Summary of the invention
In view of the above problems, the present invention provides a kind of graphite pressure ball, constituents, according to weight percent, earthy
Graphite ore 85-95%, bentonite 1-5%, industrial dextrin 1-11%.Using the technique of ball press ball press technique production graphite pressure ball
Amorphous graphite mine is bonded balling-up by method success.
Further, a kind of graphite pressure ball, constituent, according to weight percent, amorphous graphite mine 95%, bentonite
3%, industrial dextrin 2%.
Further, a kind of graphite pressure ball, constituent, according to weight percent, amorphous graphite mine 85%, bentonite
4%, industrial dextrin 11%.
Further, a kind of graphite pressure ball, constituent, according to weight percent, amorphous graphite mine 94%, bentonite
5%, industrial dextrin 1%.
In the distribution of the full scrap smelting of electric furnace, replaced and using graphite pressure ball and steel scrap part all instead of the pig iron
With carbon.
Further, electric furnace smelting, as follows according to ingredient detail: in parts by weight, 2-5 parts of graphite pressure ball, pig iron 0-
24 parts, 6 parts of iron sheet agglomerate, 53-74 parts of heavy-duty waste steel, 15 parts of recirculating scrap in factory.
Further, in parts by weight, 2 parts of graphite pressure ball, 24 parts of the pig iron, 6 parts of iron sheet agglomerate, 53 parts of heavy-duty waste steel,
15 parts of recirculating scrap in factory.
Further: in parts by weight, 4 parts of graphite pressure ball, 8 parts of the pig iron, 6 parts of iron sheet agglomerate, 67 parts of heavy-duty waste steel, factory
15 parts of interior recirculating scrap.
Further, in parts by weight, 5 parts of graphite pressure ball, 0 part of the pig iron, 6 parts of iron sheet agglomerate, 74 parts of heavy-duty waste steel, factory
15 parts of interior recirculating scrap.
A kind of process of full scrap smelting of electric furnace is provided according to another aspect of the present invention, it is complete using above-mentioned electric furnace
The batching mode of scrap smelting carries out ingredient, using following steel making working procedure: EBT electric furnace-LF refining furnace-VD vacuum drying oven-middle side
Base continuous casting；
Wherein in EBT electric furnace smelting process, graphite pressure ball is packed into batch can bottom, is all packed into a material；Electric furnace dress
Power transmission wears well after a complete material, and after power transmission 3 minutes, first slag charge, two wall lance hypoxemia, oxygen is added in steel scrap red heat
Flow 400-800Nm3/h operation, and use furnace door oxygen lance slugging；It is load melting to fill two times material, double hypoxemia 1 are first used after power transmission
After minute, second batch slag charge is added in an oxygen rifle hyperoxia, an oxygen rifle hypoxemia operation, and two wall lance hypoxemia of slugging operate,
Slag charge melts two oxygen rifle hyperoxia operations, flows slag automatically, and carbon dust morning foamed slag is sprayed into furnace, and third batch slag is added after slagging
Material, two wall lance hypoxemia operations of slugging, slag charge melt two oxygen rifle hyperoxia operations, and temperature is greater than 1650 DEG C, sampling, ingredient
Suitable tapping.
The utility model has the advantages that
Graphite pressure ball technology is produced using pressure ball adhesion technique, pig iron to match with carbon can be replaced in the full scrap smelting of electric furnace, directly
It is hinged with into steel scrap batch can, it is easy to accomplish, it is not required to additionally increase equipment, reduces production cost.Both Sustainable use resource, also only
Environment is changed, and the high quality graphite products of steel-making demand can be produced.Graphite briquetting is used in the full scrap smelting of electric furnace simultaneously
Instead of pig iron to match with carbon, it is directly loadable into steel scrap batch can, by controlling the smelting process of power transmission, slag making, oxygen blast system, successfully instead of life
Iron matches carbon, easy to accomplish, is not required to additionally increase equipment, reduces production cost.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The technical program provides a kind of graphite pressure ball, constituent, according to weight percent, amorphous graphite mine 85-
95%, bentonite 1-5%, industrial dextrin 1-11%.Using the process success of ball press ball press technique production graphite pressure ball
Amorphous graphite mine is bonded balling-up.
As the improvement of scheme, a kind of graphite pressure ball, constituent, according to weight percent, amorphous graphite mine 95%,
Bentonite 3%, industrial dextrin 2%.
As the improvement of scheme, a kind of graphite pressure ball, constituent, according to weight percent, amorphous graphite mine 85%,
Bentonite 4%, industrial dextrin 11%.
As the improvement of scheme, a kind of graphite pressure ball, constituent, according to weight percent, amorphous graphite mine 94%,
Bentonite 5%, industrial dextrin 1%.
In the distribution of the full scrap smelting of electric furnace, replaced and using graphite pressure ball and steel scrap part all instead of the pig iron
With carbon.
As the improvement of scheme, in parts by weight, 2 parts of graphite pressure ball, 24 parts of the pig iron, 6 parts of iron sheet agglomerate, heavy-duty waste steel
53 parts, 15 parts of recirculating scrap in factory.
As the improvement of scheme, in parts by weight, 4 parts of graphite pressure ball, 8 parts of the pig iron, 6 parts of iron sheet agglomerate, heavy-duty waste steel
67 parts, 15 parts of recirculating scrap in factory.
As the improvement of scheme, in parts by weight, 5 parts of graphite pressure ball, 0 part of the pig iron, 6 parts of iron sheet agglomerate, heavy-duty waste steel
74 parts, 15 parts of recirculating scrap in factory.
A kind of process of full scrap smelting of electric furnace is provided according to another aspect of the present invention, it is complete using above-mentioned electric furnace
The batching mode of scrap smelting carries out ingredient, using following steel making working procedure: EBT electric furnace-LF refining furnace-VD vacuum drying oven-middle side
Base continuous casting；
Wherein in EBT electric furnace smelting process, graphite pressure ball is packed into batch can bottom, is all packed into a material；Electric furnace dress
Power transmission wears well after a complete material, and after power transmission 3 minutes, first slag charge, two wall lance hypoxemia, oxygen is added in steel scrap red heat
Flow 400-800Nm3/h operation, and use furnace door oxygen lance slugging；It is load melting to fill two times material, double hypoxemia 1 are first used after power transmission
After minute, second batch slag charge is added in an oxygen rifle hyperoxia, an oxygen rifle hypoxemia operation, and two wall lance hypoxemia of slugging operate,
Slag charge melts two oxygen rifle hyperoxia operations, flows slag automatically, and carbon dust morning foamed slag is sprayed into furnace, and third batch slag is added after slagging
Material, two wall lance hypoxemia operations of slugging, slag charge melt two oxygen rifle hyperoxia operations, and temperature is greater than 1650 DEG C, sampling, ingredient
Suitable tapping.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of graphite pressure ball, it is characterised in that: its constituent, according to weight percent, amorphous graphite mine 85-95% is swollen
Moisten soil 1-5%, industrial dextrin 1-11%.
2. a kind of distribution of the full scrap smelting of electric furnace, it is characterised in that: in the distribution of the full scrap smelting of electric furnace, adopt
It is replaced with graphite pressure ball and steel scrap part and all instead of pig iron to match with carbon.
3. a kind of distribution of the full scrap smelting of electric furnace as claimed in claim 2, it is characterised in that: electric furnace smelting, according to
Ingredient detail is as follows: in parts by weight, 2-5 parts of graphite pressure ball, 0-24 parts of the pig iron, 6 parts of iron sheet agglomerate, heavy-duty waste steel 53-74
Part, 15 parts of recirculating scrap in factory.
4. a kind of distribution of the full scrap smelting of electric furnace as claimed in claim 3, it is characterised in that: in parts by weight,
2 parts of graphite pressure ball, 24 parts of the pig iron, 6 parts of iron sheet agglomerate, 53 parts of heavy-duty waste steel, 15 parts of recirculating scrap in factory.
5. a kind of distribution of the full scrap smelting of electric furnace as claimed in claim 3, it is characterised in that: in parts by weight,
4 parts of graphite pressure ball, 8 parts of the pig iron, 6 parts of iron sheet agglomerate, 67 parts of heavy-duty waste steel, 15 parts of recirculating scrap in factory.
6. a kind of distribution of the full scrap smelting of electric furnace as claimed in claim 3, it is characterised in that: in parts by weight,
5 parts of graphite pressure ball, 0 part of the pig iron, 6 parts of iron sheet agglomerate, 74 parts of heavy-duty waste steel, 15 parts of recirculating scrap in factory.
7. the smelting process that a kind of supplying graphite pressure ball replaces pig iron electric furnace steel-making, it is characterised in that: the specific steps are EBT electricity
Furnace-LF refining furnace-VD vacuum drying oven-middle billet continuous casting；
Wherein in EBT electric furnace smelting process, graphite pressure ball is packed into batch can bottom, is all packed into a material；Electric furnace installs one
Power transmission wears well after material, and after power transmission 3 minutes, first slag charge, two wall lance hypoxemia, oxygen flow is added in steel scrap red heat
400-800Nm3/h operation, and use furnace door oxygen lance slugging；It is load melting to fill two times material, it is first used after power transmission double hypoxemia 1 minutes
Afterwards, second batch slag charge, two wall lance hypoxemia operations of slugging, slag charge is added in an oxygen rifle hyperoxia, an oxygen rifle hypoxemia operation
Two oxygen rifle hyperoxia operations are melted, flow slag automatically, and spray carbon dust morning foamed slag into furnace, third batch slag charge is added after slagging,
Two wall lance hypoxemia operations of slugging, slag charge melt two oxygen rifle hyperoxia operations, and temperature is greater than 1650 DEG C, sampling, at division
Suitable tapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188102.5A CN109136463B (en) | 2018-10-12 | 2018-10-12 | Batching method and smelting process for smelting electric furnace full scrap steel and graphite press ball |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188102.5A CN109136463B (en) | 2018-10-12 | 2018-10-12 | Batching method and smelting process for smelting electric furnace full scrap steel and graphite press ball |
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| Publication Number | Publication Date |
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| CN109136463A true CN109136463A (en) | 2019-01-04 |
| CN109136463B CN109136463B (en) | 2020-10-16 |
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| CN201811188102.5A Active CN109136463B (en) | 2018-10-12 | 2018-10-12 | Batching method and smelting process for smelting electric furnace full scrap steel and graphite press ball |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846467A (en) * | 2019-10-23 | 2020-02-28 | 首钢集团有限公司 | Method and device for supplementing heat to electric furnace |
| CN111139332A (en) * | 2020-01-21 | 2020-05-12 | 鞍钢股份有限公司 | Slag former and light and thin scrap steel mixed processing furnace entering process |
Citations (5)
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|---|---|---|---|---|
| CN1044956A (en) * | 1989-02-14 | 1990-08-29 | 抚顺钢厂 | Steel-smelting technology with graphite coal carburetting |
| RU2041961C1 (en) * | 1994-03-30 | 1995-08-20 | Товарищество с ограниченной ответственностью компания "Металл" | Method for steel making |
| CN101717883A (en) * | 2009-07-22 | 2010-06-02 | 隋智通 | Continuous production method of vanadium (iron) carbonitride and device thereof |
| 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 |
| CN105859314A (en) * | 2016-06-06 | 2016-08-17 | 浙江自立高温科技有限公司 | Carbon-containing gunning mix for liquid steel smelting equipment and preparation method thereof |
-
2018
- 2018-10-12 CN CN201811188102.5A patent/CN109136463B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044956A (en) * | 1989-02-14 | 1990-08-29 | 抚顺钢厂 | Steel-smelting technology with graphite coal carburetting |
| RU2041961C1 (en) * | 1994-03-30 | 1995-08-20 | Товарищество с ограниченной ответственностью компания "Металл" | Method for steel making |
| CN101717883A (en) * | 2009-07-22 | 2010-06-02 | 隋智通 | Continuous production method of vanadium (iron) carbonitride and device thereof |
| 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 |
| CN105859314A (en) * | 2016-06-06 | 2016-08-17 | 浙江自立高温科技有限公司 | Carbon-containing gunning mix for liquid steel smelting equipment and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846467A (en) * | 2019-10-23 | 2020-02-28 | 首钢集团有限公司 | Method and device for supplementing heat to electric furnace |
| CN110846467B (en) * | 2019-10-23 | 2021-08-17 | 首钢集团有限公司 | Method and device for supplementing heat to electric furnace |
| CN111139332A (en) * | 2020-01-21 | 2020-05-12 | 鞍钢股份有限公司 | Slag former and light and thin scrap steel mixed processing furnace entering process |
| CN111139332B (en) * | 2020-01-21 | 2021-04-27 | 鞍钢股份有限公司 | Slag former and light and thin scrap steel mixed processing furnace entering process |
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| CN109136463B (en) | 2020-10-16 |
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