CN105969938B - The outer LF-VD of alloy steel stove digests nickelic molybdenum reclaimed materials technique - Google Patents
The outer LF-VD of alloy steel stove digests nickelic molybdenum reclaimed materials technique Download PDFInfo
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- CN105969938B CN105969938B CN201610476449.4A CN201610476449A CN105969938B CN 105969938 B CN105969938 B CN 105969938B CN 201610476449 A CN201610476449 A CN 201610476449A CN 105969938 B CN105969938 B CN 105969938B
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- molybdenum
- nickelic
- reclaimed materials
- addition
- alloy
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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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- 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
- C21C7/10—Handling in a vacuum
-
- 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
- C21C2007/0093—Duplex process; Two stage processes
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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 present invention relates to LF VD outside a kind of alloy steel stove to digest nickelic molybdenum reclaimed materials technique, including following master operation, by nickelic molybdenum reclaimed materials according to ingredient and component content Classification Management, mark；Required to limit the addition of nickelic molybdenum reclaimed materials according to the capacity of LF VD, warming and cooling rate and smelting cycle outside stove；Calculated according to the target chemical component of alloy smelting steel and determine step 1）In nickelic molybdenum reclaimed materials addition species and adding proportion, need to consider the influence of fluctuations of other elements component in molten steel after addition when determining the species and ratio of the nickelic molybdenum reclaimed materials of addition.The digestion process of the nickelic molybdenum reclaimed materials of the present invention can improve the rate of recovery of nickel in reclaimed materials, molybdenum, improve the accuracy that molten steel elemental composition is adjusted.
Description
Technical field
The present invention relates to the digestion process of nickelic molybdenum reclaimed materials during steel alloy smelting molten steel dispensing.
Background technology
The reclaimed materials of nickelic molybdenum content is all added to just furnace during most domestic smelter alloy smelting steel and carries out smelting
Refining, since first furnace oxidisability is strong, smelting temperature is high, the element such as nickel molybdenum manganese silicon have in smelting process oxidation, gasification and with
Slag losing issue, the rate of recovery is low and unstable, and nickelic molybdenum content reclaimed materials nickel, molybdenum are about in the rate of recovery of first furnace according to statistics
90% to 55% or so, this smelting pattern causes the precious alloy nickel molybdenum element in reclaimed materials sufficiently to recycle, and makes
It is unstable into the wasting of resources, raising entreprise cost, molten steel composition.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of alloy steel stove outer LF-VD digestion for the above-mentioned prior art
Nickelic molybdenum reclaimed materials technique, improves the rate of recovery of nickelic molybdenum reclaimed materials, improves the stability of molten steel in smelting process.
Technical solution is used by the present invention solves the above problems：A kind of outer LF-VD of alloy steel stove digests nickelic molybdenum and returns
Rewinding technique, including following master operation,
1）By nickelic molybdenum reclaimed materials according to ingredient and component content Classification Management, mark；
2）Required to limit the addition of nickelic molybdenum reclaimed materials according to the capacity of LF-VD, warming and cooling rate and smelting cycle outside stove
Amount；
3）Calculated according to the target chemical component of alloy smelting steel and determine step 1）In nickelic molybdenum reclaimed materials addition species
And adding proportion, need to consider when determining the species of the nickelic molybdenum reclaimed materials of addition with ratio after addition in molten steel other elements into
The influence of fluctuations divided.
Concrete operations：
1）Selected nickelic molybdenum reclaimed materials at least will the nickel containing more than 0.5wt%, molybdenum content, material block cleaning is dry, does not stick
Impurity, preprocessing are less than 500mm into length, and equivalent diameter is less than the material block of 300mm, collect in classification hopper and dry；
2）For the alloy steel smelting of nickeliferous, molybdenum, chromium, first furnace tapping weight be reduced to original tap 90~
95%, the dosage of matching somebody with somebody of nickelic molybdenum waste liqouor material is reserved, tapping temperature improves 20~50 DEG C；
3）According to the nickelic molybdenum reclaimed materials total amount of adding of calculating, first add the 60-70%'s of total amount of adding after first furnace tapping
External refining is carried out after reclaimed materials again, by accurately calculating with addition of nickelic molybdenum reclaimed materials to molten steel chemistry member during external refining
The influence of element, then treat that chemical composition reaches requirement or appearance in steel alloy molten steel with addition of remaining nickelic molybdenum reclaimed materials in right amount
Can not again with addition of nickelic molybdenum reclaimed materials in the case of reuse ferroalloy adjust molten steel component.
Preferably, the addition species of the nickelic molybdenum reclaimed materials and adding proportion need to utilize Numerical regression principle design one
A multicomponent alloy addition software for calculation, using the component of all kinds of nickelic molybdenum reclaimed materials as an alloy raw material deposit to software
In, the addition species and ratio of nickelic molybdenum reclaimed materials are determined by software tip.
Compared with prior art, the advantage of the invention is that：The outer LF-VD of the alloy steel stove of the present invention digests nickelic molybdenum recycling
The method of material makes nickel, the rate of recovery of molybdenum has respectively reached 99% and 97%, and one ton of nickelic molybdenum content reclaimed materials of digestion can increase effect
At least 1000 yuan of benefit.In addition, the digestion process of the nickelic molybdenum reclaimed materials of the present invention is classified according to reclaimed materials component itself, lead to
Accurate calculating is crossed, optimizes the addition species and additive amount of reclaimed materials, reaches the optimization regulating effect of molten steel, help to ensure steel
The quality of water and the accuracy of the allotment of ladle chemistry.
Embodiment
The present invention is described in further detail with reference to embodiments.
In the present embodiment
1）By nickelic molybdenum reclaimed materials according to ingredient and component content Classification Management, mark, and all kinds of nickelic molybdenums are returned
Rewinding is stored in software as alloy；
2）Nickelic molybdenum reclaimed materials at least will the nickel containing more than 0.5wt%, molybdenum content, material block cleaning is dry, it is miscellaneous not stick
Matter, nickelic molybdenum reclaimed materials are processed into length and are less than 500mm, and equivalent diameter is less than the material block of 300mm, collects in classification hopper simultaneously
The table for being placed in high temperature is dry nearby；
3）Smelt nickeliferous, molybdenum, chromium steel alloy when, first furnace tapping weight is reduced to the 95% of original tap, stays
Go out the dosage of matching somebody with somebody of nickelic molybdenum waste liqouor material, tapping temperature improves 20~50 DEG C；
4）Required to limit the addition of nickelic molybdenum reclaimed materials according to the capacity of LF-VD, warming and cooling rate and smelting cycle outside stove
Amount；Further according to alloy smelting steel target chemical component by software calculate determine nickelic molybdenum reclaimed materials addition species and addition
Amount, needs to consider the fluctuation of the other elements such as component such as carbon, manganese, chromium in molten steel after addition reclaimed materials in calculating process.
5）According to the addition manner of the nickelic molybdenum reclaimed materials of calculating, first furnace first adds the 70% of total amount of adding after tapping
External refining is carried out after reclaimed materials again, by accurately calculating with addition of nickelic molybdenum reclaimed materials to molten steel chemistry member during external refining
The influence of element, then treat that chemical composition reaches requirement or goes out in steel alloy molten steel with addition of the nickelic molybdenum reclaimed materials of residue 30% in right amount
Now can not again with addition of nickelic molybdenum reclaimed materials in the case of reuse ferroalloy adjust molten steel component.
The digestion process of above-mentioned nickelic molybdenum reclaimed materials can improve the rate of recovery of nickel in reclaimed materials, molybdenum, improve molten steel element
The accuracy of constituent adjustment.
In addition to the implementation, it is all to use equivalent transformation or equivalent replacement present invention additionally comprises there is other embodiment
The technical solution that mode is formed, should all fall within the scope of the hereto appended claims.
Claims (2)
1. a kind of outer LF-VD of alloy steel stove digests nickelic molybdenum reclaimed materials technique, it is characterised in that：Including following master operation,
1）By nickelic molybdenum reclaimed materials according to ingredient and component content Classification Management, mark；
2）Required to limit the addition of nickelic molybdenum reclaimed materials according to the capacity of LF-VD, warming and cooling rate and smelting cycle outside stove；
3）Calculated according to the target chemical component of alloy smelting steel and determine step 1）In nickelic molybdenum reclaimed materials addition species and add
Add ratio, other elements component in molten steel after needing to consider to add when determining the species and ratio of the nickelic molybdenum reclaimed materials of addition
Influence of fluctuations；
Concrete operations：
1）Selected nickelic molybdenum reclaimed materials at least will the nickel containing more than 0.5wt%, molybdenum content, material block cleaning is dry, it is miscellaneous not stick
Matter, preprocessing are less than 500mm into length, and equivalent diameter is less than the material block of 300mm, collect in classification hopper and dry；
2）For the alloy steel smelting of nickeliferous, molybdenum, chromium, first furnace tapping weight is reduced to the 90~95% of original tap,
The dosage of matching somebody with somebody of nickelic molybdenum waste liqouor material is reserved, tapping temperature improves 20~50 DEG C；
3）According to the nickelic molybdenum reclaimed materials total amount of adding of calculating, the recycling of the 60-70% of total amount of adding is first added after first furnace tapping
External refining is carried out after material again, by accurately calculating with addition of nickelic molybdenum reclaimed materials to molten steel chemical element during external refining
Influence, then treat that chemical composition reaches requirement in steel alloy molten steel or appearance can not with addition of remaining nickelic molybdenum reclaimed materials in right amount
Again with addition of nickelic molybdenum reclaimed materials in the case of reuse ferroalloy adjust molten steel component.
2. the outer LF-VD of alloy steel stove according to claim 1 digests nickelic molybdenum reclaimed materials technique, it is characterised in that：It is described
The addition species and adding proportion of nickelic molybdenum reclaimed materials need to design a multicomponent alloy addition gauge using Numerical regression principle
Software is calculated, using the component of all kinds of nickelic molybdenum reclaimed materials as an alloy raw material deposit into software, is determined by software tip
The addition species and ratio of nickelic molybdenum reclaimed materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610476449.4A CN105969938B (en) | 2016-06-27 | 2016-06-27 | The outer LF-VD of alloy steel stove digests nickelic molybdenum reclaimed materials technique |
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| CN201610476449.4A CN105969938B (en) | 2016-06-27 | 2016-06-27 | The outer LF-VD of alloy steel stove digests nickelic molybdenum reclaimed materials technique |
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| CN105969938B true CN105969938B (en) | 2018-05-01 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233094A (en) * | 2013-04-25 | 2013-08-07 | 浙江大江合金钢钢管有限公司 | Smelting process of high-strength alloy steel |
| CN103898391A (en) * | 2012-12-24 | 2014-07-02 | 宝山钢铁股份有限公司 | Loading control method for converter high alloy steel scrap |
| KR101484947B1 (en) * | 2013-08-30 | 2015-01-21 | 주식회사 포스코 | Method for manufacturing carbon steel |
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2016
- 2016-06-27 CN CN201610476449.4A patent/CN105969938B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898391A (en) * | 2012-12-24 | 2014-07-02 | 宝山钢铁股份有限公司 | Loading control method for converter high alloy steel scrap |
| CN103233094A (en) * | 2013-04-25 | 2013-08-07 | 浙江大江合金钢钢管有限公司 | Smelting process of high-strength alloy steel |
| KR101484947B1 (en) * | 2013-08-30 | 2015-01-21 | 주식회사 포스코 | Method for manufacturing carbon steel |
Non-Patent Citations (2)
| Title |
|---|
| 电弧炉冶炼低钨、钼合金钢合金加入工艺探讨;姚国平;《山西科技》;20090320(第2期);第98-99页 * |
| 电炉和精炼炉VOD双联法冶炼不锈钢工艺;王明旭;《大型铸锻件》;20080131(第1期);第26-28页 * |
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