CN108285948A - The method for improving carburant absorptivity in synthetic cast iron technique - Google Patents
The method for improving carburant absorptivity in synthetic cast iron technique Download PDFInfo
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- CN108285948A CN108285948A CN201810143158.2A CN201810143158A CN108285948A CN 108285948 A CN108285948 A CN 108285948A CN 201810143158 A CN201810143158 A CN 201810143158A CN 108285948 A CN108285948 A CN 108285948A
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- Prior art keywords
- carburant
- molten iron
- steel scrap
- absorptivity
- cast iron
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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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0025—Adding carbon material
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to Cast Iron Production technical fields, it is a kind of method improving carburant absorptivity in synthetic cast iron technique, carburant is laid in bottom in equipment, then the molten iron that steel scrap is melted into bottom is poured to lay in the equipment of carburant, after the molten iron of steel scrap chemical conversion pours, carburetting molten iron is obtained after the molten iron absorption carburant of steel scrap chemical conversion.The method of the present invention for improving carburant absorptivity in synthetic cast iron technique can improve absorptivity of the molten iron to carburant, and then improve steel scrap water rate, and guarantee is provided for later stage Cast Iron Production, and realize steel scrap recycling；In addition, relative to the heating steel scrap mode when carburant is added, the method of the present invention for improving carburant absorptivity in synthetic cast iron technique can shorten the soak time of carburant, based on the advantage, make the method for carburant absorptivity in raising synthetic cast iron technique of the present invention that there is extensive prospects for commercial application.
Description
Technical field
The present invention relates to Cast Iron Production technical fields, are a kind of sides for improving carburant absorptivity in synthetic cast iron technique
Method.
Background technology
In recent years, sharp rising for rising steadily with the prices of raw materials, especially pig iron price, makes cast iron products
Cost is higher and higher.Meanwhile with the growth of steel demand, do not become the ferrous waste of product in steel plant's production process
（Such as trimming, cropping）And the equipment scrapped after, the steel material in component also increase, i.e., steel scrap amount is increasingly
Greatly.In order to utmostly be utilized to waste steel recycling rate, when by smelting scrap steel at molten iron, corresponding carburant etc., production casting is added
Iron product.Currently, the Adding Way of carburant is steel scrap and carburant layering is added and heating is useless when carburant is added
Two kinds of steel.Steel scrap and carburant layering are added：Before changing steel scrap, bottom spreads one layer of carburant in electric furnace, then increases in bottom
One layer of carbon agent upper berth steel scrap restarts electricity after the desired amount of carburant and steel scrap are alternately successively mounted in electric furnace in such a way
Stove steel scrap, since steel scrap carries impurity, during changing steel scrap, with the fusing of steel scrap, impurity floats up to molten iron table
The floating in face, impurity takes part carburant to molten iron surface, when pulling the impurity for swimming in upper surface out electric furnace, can take away
Part carburant makes molten iron to the relatively low of carburant absorptivity, to influence later stage Cast Iron Production.It heats up when carburant is added
The mode for changing steel scrap equally exists relatively low problem of the molten iron to carburant absorptivity, and its soak time be about 5min extremely
10min.I.e. the prior art constrains the production that steel scrap is reused in cast iron.
Invention content
The present invention provides a kind of methods of carburant absorptivity in raising synthetic cast iron technique, overcome above-mentioned existing skill
The deficiency of art can effectively solve the problems, such as that there are the relatively low of carburant absorptivity for existing carburant Adding Way.
The technical scheme is that realized by following measures：Carburant is inhaled in a kind of raising synthetic cast iron technique
The method of yield carries out as follows：Carburant is laid in bottom in equipment, the molten iron that steel scrap is melted into then is poured into bottom
Portion is laid in the equipment of carburant, and the temperature of the molten iron of steel scrap chemical conversion is 1450 DEG C to 1550 DEG C, and the molten iron of steel scrap chemical conversion pours
Afterwards, the molten iron of steel scrap chemical conversion obtains carburetting molten iron after absorbing carburant, and the time of the molten iron absorption carburant of steel scrap chemical conversion is 1 point
Clock was to 2 minutes.
Here is the further optimization and/or improvements to foregoing invention technical solution：
The molten iron of above-mentioned steel scrap chemical conversion obtains as follows：By scrap melting at molten iron, the impurity on molten iron surface is removed, it will
Molten iron after removing impurity is heated to 1450 DEG C to 1550 DEG C and obtains the molten iron of steel scrap chemical conversion.
The method of the present invention for improving carburant absorptivity in synthetic cast iron technique, can improve molten iron to carburant
Absorptivity, and then improve steel scrap water rate, provide guarantee for later stage Cast Iron Production, and realize steel scrap recycle；Separately
Outside, relative to the heating steel scrap mode when carburant is added, carburant is inhaled in raising synthetic cast iron technique of the present invention
The method of yield can shorten the soak time of carburant, be based on the advantage, make raising synthetic cast iron work of the present invention
The method of carburant absorptivity has extensive prospects for commercial application in skill.
Specific implementation mode
The present invention is not limited by following embodiments, can be determined according to the technique and scheme of the present invention with actual conditions specific
Embodiment.It is previously mentioned various chemical reagent and chemical article in the present invention unless otherwise specified, is public in the prior art
Know common chemical reagent and chemical article.
With reference to embodiment, the invention will be further described：
Embodiment 1：The method of carburant absorptivity, carries out as follows in the raising synthetic cast iron technique：Carburant is spread
It is placed on bottom in equipment, the molten iron that steel scrap is melted into, which is then poured bottom, lays in the equipment of carburant, the molten iron of steel scrap chemical conversion
Temperature be 1450 DEG C to 1550 DEG C, steel scrap chemical conversion molten iron pour after, steel scrap chemical conversion molten iron absorb carburant after increased
The time of carbon molten iron, the molten iron absorption carburant of steel scrap chemical conversion is 1 minute to 2 minutes.
The present invention is filled with mode using carburant feed postition unlike the prior art, using packet bottom（Carburant is spread
It is placed on bottom in equipment, the molten iron that steel scrap is melted into, which is then poured bottom, lays in the equipment of carburant）Make molten iron to carburant
Absorptivity improve, using the method described in the present embodiment, molten iron can be made to reach 97.5% or more to the absorptivity of carburant；
And steel scrap and carburant is used to be layered feed postition, molten iron is 56.12% to 95% to the absorptivity of carburant；It is added and is increased using side
Carbon agent side heatingization steel scrap mode, molten iron are 69% to 97% to the absorptivity of carburant.
It can thus be seen that not only using the method for the present invention for improving carburant absorptivity in synthetic cast iron technique
Absorptivity of the molten iron to carburant can be improved, and relative to the heating steel scrap mode when carburant is added, institute of the present invention
The soak time that the packet bottom stated is filled with mode is shorter.
Equipment in the present invention is that the electric furnace used in existing known molten iron production or existing known other molten iron that are used for are given birth to
The equipment of production.
Embodiment 2：As the optimization of above-described embodiment, the molten iron of steel scrap chemical conversion obtains as follows：By scrap melting
At molten iron, the impurity on molten iron surface is removed, the molten iron after removing impurity, which is heated to 1450 DEG C to 1550 DEG C, obtains steel scrap
At molten iron.
Embodiment 3：The method of carburant absorptivity, carries out as follows in the raising synthetic cast iron technique：By carburetting
Agent is laid in bottom in equipment, and the molten iron that steel scrap is melted into, which is then poured bottom, lays in the equipment of carburant, steel scrap chemical conversion
The temperature of molten iron is 1450 DEG C, and after the molten iron that steel scrap is melted into pours, carburetting iron is obtained after the molten iron absorption carburant of steel scrap chemical conversion
The time of water, the molten iron absorption carburant of steel scrap chemical conversion is 2 minutes.
Using the method described in the present embodiment 3, molten iron can be made to reach 97.96% to the absorptivity of carburant.
Embodiment 4：The method of carburant absorptivity, carries out as follows in the raising synthetic cast iron technique：By carburetting
Agent is laid in bottom in equipment, and the molten iron that steel scrap is melted into, which is then poured bottom, lays in the equipment of carburant, steel scrap chemical conversion
The temperature of molten iron is 1470 DEG C, and after the molten iron that steel scrap is melted into pours, carburetting iron is obtained after the molten iron absorption carburant of steel scrap chemical conversion
The time of water, the molten iron absorption carburant of steel scrap chemical conversion is 1 minute.
Using the method described in the present embodiment 4, molten iron can be made to reach 98% to the absorptivity of carburant.
Embodiment 5：The method of carburant absorptivity, carries out as follows in the raising synthetic cast iron technique：By carburetting
Agent is laid in bottom in equipment, and the molten iron that steel scrap is melted into, which is then poured bottom, lays in the equipment of carburant, steel scrap chemical conversion
The temperature of molten iron is 1500 DEG C, and after the molten iron that steel scrap is melted into pours, carburetting iron is obtained after the molten iron absorption carburant of steel scrap chemical conversion
The time of water, the molten iron absorption carburant of steel scrap chemical conversion is 1 minute.
Using the method described in the present embodiment 5, molten iron can be made to reach 99% to the absorptivity of carburant.
Embodiment 6：The method of carburant absorptivity, carries out as follows in the raising synthetic cast iron technique：By carburetting
Agent is laid in bottom in equipment, and the molten iron that steel scrap is melted into, which is then poured bottom, lays in the equipment of carburant, steel scrap chemical conversion
The temperature of molten iron is 1550 DEG C, and after the molten iron that steel scrap is melted into pours, carburetting iron is obtained after the molten iron absorption carburant of steel scrap chemical conversion
The time of water, the molten iron absorption carburant of steel scrap chemical conversion is 2 minutes.
Using the method described in the present embodiment 6, molten iron can be made to reach 99.12% to the absorptivity of carburant.
Using the method for improving carburant absorptivity in synthetic cast iron technique described in the embodiment of the present invention 3 to embodiment 6
And the prior art, when handling steel scrap, carburant absorptivity and steel scrap water rate are as shown in table 1.
It can be seen from Table 1 that using the method described in the embodiment of the present invention 3 to embodiment 6, molten iron is significantly improved to increasing
The absorptivity of carbon agent, and then improve steel scrap water rate.
In conclusion the method for the present invention for improving carburant absorptivity in synthetic cast iron technique, can improve iron
Water improves steel scrap water rate to the absorptivity of carburant, provides guarantee for later stage Cast Iron Production, and realize steel scrap
It recycles；In addition, relative to the heating steel scrap mode when carburant is added, in raising synthetic cast iron technique of the present invention
The method of carburant absorptivity can shorten the soak time of carburant, be based on the advantage, and raising of the present invention is made to close
There is extensive prospects for commercial application at the method for carburant absorptivity in casting iron craft.
The above technical characteristic constitutes the embodiment of the present invention, can basis with stronger adaptability and implementation result
Actual needs increases and decreases non-essential technical characteristic, to meet the needs of different situations.
Claims (2)
1. a kind of method improving carburant absorptivity in synthetic cast iron technique, it is characterised in that carry out as follows：It will increase
Carbon agent is laid in bottom in equipment, and the molten iron that steel scrap is melted into, which is then poured bottom, lays in the equipment of carburant, steel scrap chemical conversion
Molten iron temperature be 1450 DEG C to 1550 DEG C, steel scrap chemical conversion molten iron pour after, steel scrap chemical conversion molten iron absorb carburant after
Carburetting molten iron is obtained, the time of the molten iron absorption carburant of steel scrap chemical conversion is 1 minute to 2 minutes.
2. the method according to claim 1 for improving carburant absorptivity in synthetic cast iron technique, it is characterised in that steel scrap
The molten iron of chemical conversion obtains as follows：By scrap melting at molten iron, the impurity on molten iron surface is removed, after removing impurity
Molten iron is heated to 1450 DEG C to 1550 DEG C and obtains the molten iron of steel scrap chemical conversion.
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| CN201810143158.2A CN108285948A (en) | 2018-02-11 | 2018-02-11 | The method for improving carburant absorptivity in synthetic cast iron technique |
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| CN201810143158.2A CN108285948A (en) | 2018-02-11 | 2018-02-11 | The method for improving carburant absorptivity in synthetic cast iron technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378946A (en) * | 2020-09-29 | 2021-02-19 | 唐山曹妃甸区通鑫再生资源回收利用有限公司 | Efficient detection method for particle steel |
Citations (3)
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| CN101671755A (en) * | 2009-10-09 | 2010-03-17 | 青特集团有限公司 | Ductile cast iron smelting furnace external recarburization process |
| CN105648146A (en) * | 2014-11-14 | 2016-06-08 | 重庆春顾机械制造有限公司 | Recarburization technique outside melted furnace |
| CN106011607A (en) * | 2016-07-15 | 2016-10-12 | 江苏汽铸造股份有限公司 | Silicon solid melt reinforced ferrite nodular cast iron and preparation technique thereof |
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2018
- 2018-02-11 CN CN201810143158.2A patent/CN108285948A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671755A (en) * | 2009-10-09 | 2010-03-17 | 青特集团有限公司 | Ductile cast iron smelting furnace external recarburization process |
| CN105648146A (en) * | 2014-11-14 | 2016-06-08 | 重庆春顾机械制造有限公司 | Recarburization technique outside melted furnace |
| CN106011607A (en) * | 2016-07-15 | 2016-10-12 | 江苏汽铸造股份有限公司 | Silicon solid melt reinforced ferrite nodular cast iron and preparation technique thereof |
Non-Patent Citations (1)
| Title |
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| 王顺安等: "合成铸铁熔炼工艺及增碳剂吸收率影响因素", 《现代铸铁》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378946A (en) * | 2020-09-29 | 2021-02-19 | 唐山曹妃甸区通鑫再生资源回收利用有限公司 | Efficient detection method for particle steel |
| CN112378946B (en) * | 2020-09-29 | 2022-03-18 | 唐山曹妃甸区通鑫再生资源回收利用有限公司 | Efficient detection method for particle steel |
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Application publication date: 20180717 |