CN100412210C - Manganese carbon alloy ball for steel-making recarburization - Google Patents
Manganese carbon alloy ball for steel-making recarburization Download PDFInfo
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- CN100412210C CN100412210C CNB2006100431277A CN200610043127A CN100412210C CN 100412210 C CN100412210 C CN 100412210C CN B2006100431277 A CNB2006100431277 A CN B2006100431277A CN 200610043127 A CN200610043127 A CN 200610043127A CN 100412210 C CN100412210 C CN 100412210C
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- manganese
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- alloy ball
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Abstract
The present invention discloses a manganese-carbon alloy ball used for carburization in steel making, which forms a block shape and comprises the following components and contents: 30 to 40 wt% of Mn and 25 to 35 wt% of C. The present invention also discloses a method for preparing the manganese-carbon alloy ball for carburization in steel making, which comprises the following steps: 5 to 8% of water glass and 1 to 3% of bentonite are added to 55 to 65 wt% of ferromanganese powder containing 55 to 60% of Mn and 25 to 35 wt% of graphite powder containing 95 to 99% of carbon; 0 to 0.5% of cellulose is added to the ferromanganese powder and the graphite powder; then, the ferromanganese powder and the graphite powder are pressed into balls with the diameters from 20 to 40mm; the balls are baked in a baking furnace for 30 to 60 minutes at the temperature of 180 to 250 DEG C. During steel making, the manganese-carbon alloy ball has the advantages of high recovery rate, stable carburization, no pollution to molten steel and low cost; in addition, the manganese-carbon alloy is a block-shaped iron alloy containing carbon.
Description
Technical field
The present invention relates to the metallurgical alloy field, particularly a kind of carburetting alloy ball that is used for after the converter steelmaking.
Background technology
For the middle and high carbon steel of converter smelting, generally all adopt in tapping process or the method that adds carburelant, again carbon content is finely tuned to reach the requirement of steel grade to carbon at refining furnace hello carbon line at the bag end.This method is brought various disadvantages, at first is that finished product carbon branch granularity is big, and makes the molten steel ladle thermosteresis of acutely seething with excitement big, is unfavorable for temperature control; Secondly the foreign matter content height of carburelant, and the cold-drawn performance of the meeting deterioration steel that easily absorb water 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, and the carburelant granularity swims on the molten steel face when big, and 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.
Summary of the invention
The technical problem that the present invention solves is: the block manganese-carbon alloy ball that provides a kind of steel-smelting and carburating to use, and this manganese-carbon alloy ball can reach rate of recovery height in steelmaking process, and carburetting is stable, does not pollute molten steel, and cost is low, and contains carbon-iron alloy for bulk.
For solving the problems of the technologies described above, the present invention is achieved in that
The component of this manganese-carbon alloy ball and the content of weight percent comprise: Mn 35.2%, C30.8%, H
2O 0.25%, and S 0.23%, and P 0.19%.
Invention effect of the present invention is:
The manganese-carbon alloy ball replaces carburelant to be added in the bag end or adds with steel stream, because manganese carbon ball proportion is bigger, adds in the molten steel with bulk form, and the rate of recovery and the stability thereof of carbon greatly improve, and the rate of recovery of carbon is more than 95%; And manganese also can play deoxidation, alloying action, and the rate of recovery of manganese reduces the usage quantity of ferromanganese greatly more than 93%, has saved cost; Envrionment conditions is improved greatly, has reduced working strength of workers simultaneously.
Embodiment
To be exactly the multiple alloy of a kind of employing (ferromanganese powder, Graphite Powder 99 etc.) with proper amount of activating agent dispose the manganese-carbon alloy ball by a certain percentage forms.Reach the requirement of steel-smelting carburant through fragmentation → mixing → pressure ball (piece) → baking.
| Mn | C | H 2O | S | P | Granularity (mm) | |
| Composition (%) | 30-40 | 25-35 | ＜1 | ＜0.35 | ＜0.3 | 20-40 |
During production being the Graphite Powder 99 of the carbon containing 95～99% of 55～65% the ferromanganese powder that contains Mn55～60% and 25%～35% with weight content, the water glass of adding 5～8% and 1～3% wilkinite, add 0～0.5% Mierocrystalline cellulose mixing again, be pressed into the ball of ф 20～40mm then, toasted 30～60 minutes at 180～250 ℃ with roaster.Envelope is preserved.
Embodiment:
Chemical ingredients through the chemical examination raw material is that ferromanganese powder contains manganese 57%, Graphite Powder 99 carbon containing 98%.As produce this alloy ball, with weight content is 60% ferromanganese powder and 31% Graphite Powder 99, adds 6% water glass and 2.5% wilkinite, adds 0.5% Mierocrystalline cellulose again, be pressed into the ball of ф 20～40mm then, toasted 30～60 minutes at 180～250 ℃ with roaster.Chemical ingredients such as following table by this manganese carbon ball of chemical analysis.
| Mn | C | H 2O | S | P | |
| Composition (%) | 35.2 | 30.8 | 0.25 | 0.23 | 0.19 |
By substituting the effect of carburelant and part ferromanganese in Nanjing steel mill with manganese carbon ball, the rate of recovery of carbon is 96%, and is highly stable, and a ton steel can fall priming cost more than 6 yuan, and steel product quality is greatly enhanced, and particularly subsurface bubble and being mingled with greatly reduces.
Claims (1)
1. manganese carbon alloy ball for steel-making recarburization, it is characterized in that: the component of this manganese-carbon alloy ball and the content of weight percent comprise: Mn 35.2%, and C 30.8%, H
2O 0.25%, S0.23%, and P 0.19%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100431277A CN100412210C (en) | 2006-07-10 | 2006-07-10 | Manganese carbon alloy ball for steel-making recarburization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100431277A CN100412210C (en) | 2006-07-10 | 2006-07-10 | Manganese carbon alloy ball for steel-making recarburization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1876853A CN1876853A (en) | 2006-12-13 |
| CN100412210C true CN100412210C (en) | 2008-08-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100431277A Expired - Fee Related CN100412210C (en) | 2006-07-10 | 2006-07-10 | Manganese carbon alloy ball for steel-making recarburization |
Country Status (1)
| Country | Link |
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| CN (1) | CN100412210C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102268541A (en) * | 2011-08-08 | 2011-12-07 | 无锡雪浪环境科技股份有限公司 | Cold-pressed pellets for smelting ferromanganese and preparation method for cold-pressed pellets |
| CN114231821A (en) * | 2021-02-02 | 2022-03-25 | 上海牛茂实业有限公司 | Hydraulic forming carbon-manganese pressed ball for steelmaking and preparation method thereof |
| CN113481347A (en) * | 2021-07-07 | 2021-10-08 | 芜湖县天海耐火炉料有限公司 | Silicon-manganese-carbon alloy ball and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203954A (en) * | 1998-04-29 | 1999-01-06 | 宝山钢铁(集团)公司 | Production method of direct reduction shaft and blast furnace cold-bonded pellet |
| CN1213705A (en) * | 1997-10-07 | 1999-04-14 | 王金忠 | Compounded carbon-silicon-manganese-barium-aluminium alloy blocks |
| CN1397652A (en) * | 2001-06-18 | 2003-02-19 | 上海盛宝钢铁冶金炉料有限公司 | Arburetant integrating metal with arbon and its preparing process |
| CN1667130A (en) * | 2005-04-11 | 2005-09-14 | 上海盛宝钢铁冶金炉料有限公司 | Carburant for manganese-carbon alloy |
-
2006
- 2006-07-10 CN CNB2006100431277A patent/CN100412210C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213705A (en) * | 1997-10-07 | 1999-04-14 | 王金忠 | Compounded carbon-silicon-manganese-barium-aluminium alloy blocks |
| CN1203954A (en) * | 1998-04-29 | 1999-01-06 | 宝山钢铁(集团)公司 | Production method of direct reduction shaft and blast furnace cold-bonded pellet |
| CN1397652A (en) * | 2001-06-18 | 2003-02-19 | 上海盛宝钢铁冶金炉料有限公司 | Arburetant integrating metal with arbon and its preparing process |
| CN1667130A (en) * | 2005-04-11 | 2005-09-14 | 上海盛宝钢铁冶金炉料有限公司 | Carburant for manganese-carbon alloy |
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| Publication number | Publication date |
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| CN1876853A (en) | 2006-12-13 |
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Granted publication date: 20080820 Termination date: 20120710 |