CN1470667A - Manganese oxide direct-alloying steel making process - Google Patents
Manganese oxide direct-alloying steel making process Download PDFInfo
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- CN1470667A CN1470667A CNA031462111A CN03146211A CN1470667A CN 1470667 A CN1470667 A CN 1470667A CN A031462111 A CNA031462111 A CN A031462111A CN 03146211 A CN03146211 A CN 03146211A CN 1470667 A CN1470667 A CN 1470667A
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Abstract
The present invention relates to a steel-smelting process by adopting manganese element alloying process, which is characterized by that in the manganese oxide the reductant, heating agent and catalyst can be added, they are broken and ground into powder material with 50-200 meshes, then uniformly mixed and mixed with adhesive to obtain the manganese alloy pelletizing. In the course of tapping from electric furnace or converter the manganese alloy pelletizing can be added into molten steel in batches, then the high temp. of molten steel can be used to melt the manganese oxide and reduce and reduce it into metal manganese to directly make the molten steel be alloyed, at the same time said invention utilizes the argon-blowing or other refining modes to raise and stabilize recover rate of manganese.
Description
Technical field:
The invention belongs to metal material field, particularly a kind of process for making of manganese element alloying.
Background technology:
Steel-making is at present carried out the manganese element alloying and is generally adopted manganiferous iron alloy such as ferromanganese, ferro-silico-manganese to carry out alloying of manganese when tapping.Also have in steel melting furnace and to add manganese ore (being Mn oxide) before the tapping and carry out alloying of manganese.During with the including Mn-Fe alloying, technical maturity, the rate of recovery of manganese is high and stable, but needs manganese ore is smelted into the including Mn-Fe alloy, so the energy consumption height, and technical process is long, the cost height, environmental pollution is serious.Adopt when adding the manganese ore alloying in the steel melting furnace, the rate of recovery of manganese is low, only is 50-60%, and the manganese oxide slag is serious to the furnace lining etch, the cost height, and the quantity of slag is big.
Summary of the invention:
The objective of the invention is to solve when adding the manganese ore alloying in the steel melting furnace, the low and manganese oxide slag of the rate of recovery of manganese is to furnace lining etch serious problems.
A kind of Mn oxide DIRECT ALLOYING process for making, it is characterized in that the present invention is mixed with the manganese alloy pelletizing with Mn oxide, in electric furnace or converter tapping process, join the manganese alloy pelletizing in the molten steel in batches, utilize molten steel high temperature that manganese direct melting from Mn oxide is reduced into manganese metal and molten steel is carried out DIRECT ALLOYING, pass through Argon or other refining modes the rate of recovery simultaneously with raising and stable manganese.
The manganese alloy pelletizing is to become 50-200 purpose powder with addition of the reductive agent of 5-15%, 1-5% heat-generating agent, 1-2% catalyzer etc. through crushing grinding greater than 40% Mn oxide by manganese content, is mixed then and makes by binding agent.Reductive agent is metal A l, Si, Ca etc., and heat-generating agent is Al, SiC, Si-Fe, Si-Ca etc., and catalyzer is an activated carbon etc.
The manganese alloy pelletizing joins in the molten steel in electric furnace or converter tapping process in batches.The adding mode is: add 1/3 of total amount before the tapping, remaining 2/3 joins in the ladle in tapping process continuously, and tapping to add in 2/3 o'clock finishes.
Processing requirement: gone out to carry out ar blowing refining behind the steel or other refining station are carried out refining, it is 0.2-0.5 MPa that argon gas stirs pressure.Add-on: determine add-on according to the amount of smelting steel grade and manganese alloy containing metal manganese.
The invention has the advantages that: (1) has removed the production process of manganese ore being smelted into the including Mn-Fe alloy, thereby save energy and alleviate environmental pollution has significantly also reduced the production cost of molten steel alloying of manganese significantly; (2) directly the manganese alloy pelletizing is joined and carry out alloying in the ladle, the rate of recovery of manganese is stabilized between the 90-95%, so the molten steel production cost further reduces; (3) slagging in the manganese alloy pelletizing has the refining effect to molten steel, the quality of favourable raising molten steel.
Embodiment:
Embodiment one: use the manganese alloy pelletizing to the Q235 steel alloying.Implement in the 25t converter, ladle is 35t, every stove tap 30t.Manganese alloy pelletizing manganese content is 34.5%.Increase manganese 0.4%, the ton steel need add manganese alloy pelletizing 12.88Kg/t molten steel, and every stove adds 386kg manganese alloy pelletizing altogether, before tapping, in empty ladle, add 130Kg, add remaining 256Kg in the tapping process, add while tapping, go out to ladle 2/3 up to molten steel, promptly add during the 20t left and right sides and finish.Enter Argon station blowing argon gas then and stir 3-4min.Result of implementation shows: the ton steel reduces cost: 4.21 yuan/ton.The rate of recovery of manganese is at 90-95%.The steel quality molten steel with the manganeseirom alloying is suitable.Embodiment two: use the manganese alloy pelletizing to the 20MnSi steel alloying.Increase manganese 1.35%, the ton steel need add manganese alloy pelletizing 43.47Kg/t molten steel, and every stove adds 1304kg manganese alloy pelletizing altogether, before tapping, in empty ladle, add 435Kg, add remaining 869Kg in the tapping process, add while tapping, go out to ladle 2/3 up to molten steel, promptly add during the 20t left and right sides and finish.Enter Argon station blowing argon gas then and stir 3-4min.Result of implementation shows: the ton steel reduces cost: 14.19 yuan/ton.The rate of recovery of manganese is at 90-95%.The steel quality molten steel with the manganeseirom alloying is suitable.
Claims (4)
1. Mn oxide DIRECT ALLOYING process for making, it is characterized in that the present invention is mixed with the manganese alloy pelletizing with Mn oxide, in electric furnace or converter tapping process, join the manganese alloy pelletizing in the molten steel in batches, utilize molten steel high temperature that manganese direct melting from Mn oxide is reduced into manganese metal and molten steel is carried out DIRECT ALLOYING, pass through Argon or other refining modes the rate of recovery simultaneously with raising and stable manganese.
2. Mn oxide DIRECT ALLOYING process for making as claimed in claim 1, it is characterized in that the manganese alloy pelletizing is to become 50-200 purpose powder with addition of the reductive agent of 5-15%, 1-5% heat-generating agent, 1-2% catalyzer etc. through crushing grinding greater than 40% Mn oxide by manganese content, be mixed then and make by binding agent, reductive agent is metal A l, Si, Ca, heat-generating agent is Al, SiC, Si-Fe, Si-Ca, and catalyzer is an activated carbon.
3. Mn oxide DIRECT ALLOYING process for making as claimed in claim 1 or 2, it is characterized in that the manganese alloy pelletizing joins in the molten steel in batches in electric furnace or converter tapping process, the adding mode is: add 1/3 of total amount before the tapping, remaining 2/3 joins in the ladle in tapping process continuously, taps to add in 2/3 o'clock to finish.
4. as claim 1 or 2 or 3 described Mn oxide DIRECT ALLOYING process for making, it is characterized in that processing requirement: carry out ar blowing refining after having gone out steel, it is 0.2-0.5MPa that argon gas stirs pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031462111A CN1470667A (en) | 2003-07-04 | 2003-07-04 | Manganese oxide direct-alloying steel making process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031462111A CN1470667A (en) | 2003-07-04 | 2003-07-04 | Manganese oxide direct-alloying steel making process |
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| Publication Number | Publication Date |
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| CN1470667A true CN1470667A (en) | 2004-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA031462111A Pending CN1470667A (en) | 2003-07-04 | 2003-07-04 | Manganese oxide direct-alloying steel making process |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434556C (en) * | 2006-09-26 | 2008-11-19 | 山西太钢不锈钢股份有限公司 | Method for adding Mn into high Mn content stainless steel in smelting process |
| CN100436627C (en) * | 2006-02-11 | 2008-11-26 | 湖南华菱涟源钢铁有限公司 | Process for producing C-Mn-Al killed steel |
| CN101899604A (en) * | 2010-08-03 | 2010-12-01 | 武汉科技大学 | Direct alloying steelmaking process for manganese oxide composite briquettes used for re-blowing revolving furnace |
| CN102443671A (en) * | 2011-12-07 | 2012-05-09 | 鞍钢股份有限公司 | Method for controlling rising of cinder surface in tapped steel ladle from converter |
| CN102828098A (en) * | 2012-09-25 | 2012-12-19 | 鞍钢股份有限公司 | Method for increasing molten steel finishing point manganese content by adding manganese ore outside furnace |
| CN102899452A (en) * | 2011-07-25 | 2013-01-30 | 王金忠 | Application of composite manganese ore powder in replacement of manganese alloy to carry out direct steelmaking |
| CN103667690A (en) * | 2013-12-16 | 2014-03-26 | 江苏大学 | Chrome-molybdenum metal self reduction pellet and preparation and direct steel liquid alloying methods thereof |
| CN106755983A (en) * | 2016-12-21 | 2017-05-31 | 钢铁研究总院 | A kind of manganese oxide and molybdenum oxide mixture pelletizing and its application method |
| CN107338364A (en) * | 2017-06-15 | 2017-11-10 | 江苏省冶金设计院有限公司 | A kind of method for preparing ferromanganese pearl |
| CN107586915A (en) * | 2017-09-06 | 2018-01-16 | 东北大学 | The alloyage process of manganese element in a kind of middle potassium steel |
| CN109371421A (en) * | 2018-12-04 | 2019-02-22 | 安徽工业大学 | A kind of production method of the ingot of electrolytic manganese metal containing nano particle |
| CN112853042A (en) * | 2021-01-06 | 2021-05-28 | 鞍钢股份有限公司 | Method for increasing manganese in high manganese steel smelting process |
-
2003
- 2003-07-04 CN CNA031462111A patent/CN1470667A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436627C (en) * | 2006-02-11 | 2008-11-26 | 湖南华菱涟源钢铁有限公司 | Process for producing C-Mn-Al killed steel |
| CN100434556C (en) * | 2006-09-26 | 2008-11-19 | 山西太钢不锈钢股份有限公司 | Method for adding Mn into high Mn content stainless steel in smelting process |
| CN101899604A (en) * | 2010-08-03 | 2010-12-01 | 武汉科技大学 | Direct alloying steelmaking process for manganese oxide composite briquettes used for re-blowing revolving furnace |
| CN101899604B (en) * | 2010-08-03 | 2012-04-04 | 武汉科技大学 | Direct alloying steelmaking process for manganese oxide composite briquettes used for re-blowing revolving furnace |
| CN102899452A (en) * | 2011-07-25 | 2013-01-30 | 王金忠 | Application of composite manganese ore powder in replacement of manganese alloy to carry out direct steelmaking |
| CN102443671B (en) * | 2011-12-07 | 2015-11-18 | 鞍钢股份有限公司 | A kind of method controlling rising of cinder surface in tapped steel ladle from converter |
| CN102443671A (en) * | 2011-12-07 | 2012-05-09 | 鞍钢股份有限公司 | Method for controlling rising of cinder surface in tapped steel ladle from converter |
| CN102828098A (en) * | 2012-09-25 | 2012-12-19 | 鞍钢股份有限公司 | Method for increasing molten steel finishing point manganese content by adding manganese ore outside furnace |
| CN103667690A (en) * | 2013-12-16 | 2014-03-26 | 江苏大学 | Chrome-molybdenum metal self reduction pellet and preparation and direct steel liquid alloying methods thereof |
| CN103667690B (en) * | 2013-12-16 | 2016-01-20 | 江苏大学 | The method of chrome-molybdenum metal self reduction pellet and preparation and DIRECT ALLOYING molten steel |
| CN106755983A (en) * | 2016-12-21 | 2017-05-31 | 钢铁研究总院 | A kind of manganese oxide and molybdenum oxide mixture pelletizing and its application method |
| CN106755983B (en) * | 2016-12-21 | 2018-05-29 | 钢铁研究总院 | A kind of manganese oxide and molybdenum oxide mixture pelletizing and its application method |
| CN107338364A (en) * | 2017-06-15 | 2017-11-10 | 江苏省冶金设计院有限公司 | A kind of method for preparing ferromanganese pearl |
| CN107586915A (en) * | 2017-09-06 | 2018-01-16 | 东北大学 | The alloyage process of manganese element in a kind of middle potassium steel |
| CN109371421A (en) * | 2018-12-04 | 2019-02-22 | 安徽工业大学 | A kind of production method of the ingot of electrolytic manganese metal containing nano particle |
| CN109371421B (en) * | 2018-12-04 | 2019-11-12 | 安徽工业大学 | A kind of production method of the ingot of electrolytic manganese metal containing nano particle |
| CN112853042A (en) * | 2021-01-06 | 2021-05-28 | 鞍钢股份有限公司 | Method for increasing manganese in high manganese steel smelting process |
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