CN100429324C - Aluminum-manganese-carbon alloy ball for steelmaking deoxidization and recarburization and preparation method thereof - Google Patents
Aluminum-manganese-carbon alloy ball for steelmaking deoxidization and recarburization and preparation method thereof Download PDFInfo
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- CN100429324C CN100429324C CNB200610104660XA CN200610104660A CN100429324C CN 100429324 C CN100429324 C CN 100429324C CN B200610104660X A CNB200610104660X A CN B200610104660XA CN 200610104660 A CN200610104660 A CN 200610104660A CN 100429324 C CN100429324 C CN 100429324C
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Abstract
The present invention discloses one kind of steelmaking deoxidizing and carburizing Al-Mn-C alloy pellet and its preparation process. The lumpy alloy pellet contains Mn 30- 40 wt%, C 25-35 wt%, Al 10-20 wt%, H2O 0-1 wt%, S 0-0.35 wt% and P 0-0.3 wt%. It is used in steelmaking to reach the aims of deoxidizing and carburizing in low labor strength, less environmental pollution and low cost.
Description
Technical field
The present invention relates to a kind of converter steelmaking field, carburetting and deoxidation alloying after particularly a kind of converter steelmaking.
Background technology
When steel-making converter is smelted middle and high carbon steel, generally all adopt in tapping process, to add alloy and carburelant is finished carburetting and deoxidation alloying task with steel stream or at the bag end.This method is brought various disadvantages, at first because carburelant is granular, when the carburelant granularity is big, swims on the molten steel face, the rate of recovery of carbon is low, is generally 80-90%, granularity hour, easily oxidation again, the carburetting instability, and add-on is bigger, and cost is higher, has worsened working conditions; Secondly granular carburelant causes the molten steel ladle thermosteresis of acutely seething with excitement big easily, is unfavorable for temperature control; The foreign matter content height of carburelant, and the cold-drawn performance of the meeting deterioration steel that easily absorb water in addition is difficult to carry out deep processing; Moreover can make in the steel carbon content inhomogeneous, cause carbon segregation.These all can influence the quality of steel.Usually need deoxidation in addition in steelmaking process, deoxidation in steel making adopts ferrosilicoaluminum at present, and multiple powder and alloy are adopted in carburetting and deoxidation, and so not only labor strength is big, contaminate environment, and also cost increases.
Summary of the invention
Be to solve the deficiencies in the prior art, the present invention to solve technical problem be: a kind of deoxidation in steel making, carburetting aluminum-manganese-carbon alloy ball are provided, and this aluminum-manganese-carbon alloy ball can reach the deoxidation alloying purpose simultaneously in the steel-smelting and carburating process.Use this aluminum-manganese-carbon alloy ball can reduce labor strength in the steelmaking process, reduce environmental pollution, reduce cost.
For solving the problems of the technologies described above, the present invention is achieved in that
This manganese-carbon alloy ball is block, and its component and content (weight %) comprising: Mn 30～33%, and C 25～28.8%, Al 10-15%.This manganese-carbon alloy ball component and content (weight %) comprising: Mn 30～33%, and C 25～28.8%, and Al 10～15%, H
2O 0～1%, S0～0.35%, and P 0～0.3%.
The present invention prepares deoxidation in steel making, carburetting with the method for aluminum-manganese-carbon alloy ball is: with weight content is the aluminium powder that the Graphite Powder 99 and 12～18% of the carbon containing 95～99% of 50～55% the ferromanganese powder that contains Mn60～65% and 25%～35% contains aluminium 95～98%, the water glass of adding 5～8% and 1～3% wilkinite, add 0～0.5% Mierocrystalline cellulose again, be pressed into the ball of φ 20～40mm then, toasted 30～60 minutes at 180～250 ℃ with roaster.
The invention has the beneficial effects as follows:
Aluminum-manganese-carbon alloy ball replaces carburelant and reductor ferrosilicoaluminum, instead of part ferro-silico-manganese to be added in the bag end fully or adds with steel stream, because aluminium manganese carbon ball proportion is bigger, add in the molten steel with bulk form, and aluminium also can play desoxydatoin, make the rate of recovery and the stability thereof of carbon greatly improve, the rate of recovery of carbon is more than 98%; Manganese can play the effect of deoxidation alloying, and the rate of recovery of manganese reduces the usage quantity of ferromanganese greatly more than 95%, has saved cost; Envrionment conditions is improved greatly, has reduced working strength of workers simultaneously.
Embodiment
To be exactly the multiple alloy powder of a kind of employing (ferromanganese powder, Graphite Powder 99, aluminium powder etc.) with proper amount of activating agent dispose aluminum-manganese-carbon alloy ball of the present invention by a certain percentage forms.Reach the requirement of steel-making through fragmentation → mixing → pressure ball (piece) → baking with carburetting and deoxidation alloying.
Can produce the aluminum-manganese-carbon alloy ball of following composition and granularity according to different steel grades:
| Mn | C | Al | H 2O | S | P | Granularity (mm) | |
| Composition (%) | 30-40 | 25-35 | 10-20 | ＜1 | ＜0.35 | ＜0.3 | 20-40 |
Mixing according to a certain percentage such as ferromanganese powder, Graphite Powder 99, binding agent, aluminium powder and Mierocrystalline cellulose, be pressed into the ball of φ 20～40mm with the belt ball press during production, 180～250 ℃ of bakings 30～60 minutes, envelope was preserved with roaster.
Produce this alloy ball, with weight is the Graphite Powder 99 of the carbon containing 95～99% of 50～55% the ferromanganese powder that contains Mn60～65% and 25～35%, the water glass of adding 1～5% and 12～18% the aluminium powder that contains aluminium 95～98%, add 0～1% Mierocrystalline cellulose and 1～3% wilkinite again, be pressed into the ball of φ 20～40mm then, toasted 30～60 minutes at 180～250 ℃ with roaster.
Embodiment:
Aluminum-manganese-carbon alloy ball composition such as following table through chemical examination production.
| Mn | C | Al | H 2O | S | P | |
| Composition (%) | 33.0 | 28.8 | 15.0 | 0.05 | 0.20 | 0.15 |
Wherein raw materials used ferromanganese powder contains manganese 63.5%, and Graphite Powder 99 carbon containing 97%, aluminium powder contain aluminium 97.5%.Actual batching add-on is a ferromanganese powder 52%, Graphite Powder 99 30%, aluminium powder 15.5%, water glass 1%, Mierocrystalline cellulose 0.5%, wilkinite 1%, mixing.Be pressed into the ball of φ 20～40mm with belt ball machine, 180～250 ℃ of bakings 30～60 minutes, envelope was preserved with roaster.
By substitute the effect of carburelant and reductor ferrosilicoaluminum, part ferromanganese with aluminium manganese carbon ball in gantry Iron And Steel Company, the ton steel adds 1.5kg aluminium manganese carbon ball, can replace the ferrosilicoaluminum of ton carburelant of steel 1.5kg, 0.5kg and the ferro-silico-manganese of 0.5kg, the rate of recovery of carbon is 98%, the rate of recovery of manganese is 90%, and highly stable, and the ton steel can directly fall cost more than 8 yuan.And deoxidation effect is good, and steel product quality is greatly enhanced, and particularly subsurface bubble reduces with being mingled with greatly.
Claims (2)
1, a kind of deoxidation in steel making, carburetting aluminum-manganese-carbon alloy ball is characterized in that: this manganese-carbon alloy ball is for block, and its component and content (weight %) comprising: Mn 30～33%, and C 25～28.8%, and Al 10～15%.
2, deoxidation in steel making according to claim 1, carburetting aluminum-manganese-carbon alloy ball is characterized in that: this manganese-carbon alloy ball component and content (weight %) comprising: Mn 30～33%, and C 25～28.8%, and Al 10～15%, H
2O 0～1%, and S 0～0.35%, and P 0～0.3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610104660XA CN100429324C (en) | 2006-09-27 | 2006-09-27 | Aluminum-manganese-carbon alloy ball for steelmaking deoxidization and recarburization and preparation method thereof |
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| CNB200610104660XA CN100429324C (en) | 2006-09-27 | 2006-09-27 | Aluminum-manganese-carbon alloy ball for steelmaking deoxidization and recarburization and preparation method thereof |
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| CN1928125A CN1928125A (en) | 2007-03-14 |
| CN100429324C true CN100429324C (en) | 2008-10-29 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312149A (en) * | 2010-06-29 | 2012-01-11 | 攀钢集团钢铁钒钛股份有限公司 | Carbon and manganese alloy material and preparation method thereof and steel making method applying material |
| CN102128836B (en) * | 2010-12-06 | 2013-02-13 | 天津钢铁集团有限公司 | Method for detecting manganese in carbon manganese alloy |
| CN102091779B (en) * | 2010-12-31 | 2012-10-03 | 攀枝花钢城集团有限公司 | Carbon manganese balls and preparation method thereof and continuous casting smelting process for high or medium carbon steel converter |
| CN102199682B (en) * | 2011-04-13 | 2013-01-09 | 攀钢集团钢铁钒钛股份有限公司 | Semisteel steelmaking method |
| CN103131820B (en) * | 2013-02-20 | 2015-09-09 | 河南鹏钰集团有限公司 | Silicomanganese efficient absorption alloy ball and preparation method thereof |
| CN105018821A (en) * | 2015-08-05 | 2015-11-04 | 启东市佳宝金属制品有限公司 | High-carbon alloy |
| CN110453041A (en) * | 2019-08-14 | 2019-11-15 | 上海盛宝冶金科技有限公司 | A kind of steelmaking aluminum manganese alloy deoxidier and its deoxidation in steel making method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841861A (en) * | 1969-04-15 | 1974-10-15 | Nat Steel Corp | Addition agent for deoxidizing and recarburizing degassed steel and method employing the same |
| CN1818087A (en) * | 2006-03-13 | 2006-08-16 | 上海盛宝钢铁冶金炉料有限公司 | Steel-smelting and carburating method |
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2006
- 2006-09-27 CN CNB200610104660XA patent/CN100429324C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841861A (en) * | 1969-04-15 | 1974-10-15 | Nat Steel Corp | Addition agent for deoxidizing and recarburizing degassed steel and method employing the same |
| CN1818087A (en) * | 2006-03-13 | 2006-08-16 | 上海盛宝钢铁冶金炉料有限公司 | Steel-smelting and carburating method |
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