CN1219599A - Production method for medium- and low-carbon manganese iron - Google Patents
Production method for medium- and low-carbon manganese iron Download PDFInfo
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- CN1219599A CN1219599A CN 97123247 CN97123247A CN1219599A CN 1219599 A CN1219599 A CN 1219599A CN 97123247 CN97123247 CN 97123247 CN 97123247 A CN97123247 A CN 97123247A CN 1219599 A CN1219599 A CN 1219599A
- Authority
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- China
- Prior art keywords
- oxygen
- manganese
- low
- carbon
- ferromanganese
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 39
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000001301 oxygen Substances 0.000 claims abstract description 31
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 31
- 229910000616 Ferromanganese Inorganic materials 0.000 claims abstract description 27
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 25
- 239000011572 manganese Substances 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 19
- 239000002893 slag Substances 0.000 claims description 16
- 238000005261 decarburization Methods 0.000 claims description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 8
- 239000004571 lime Substances 0.000 claims description 8
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 229910000720 Silicomanganese Inorganic materials 0.000 claims description 6
- 239000010436 fluorite Substances 0.000 claims description 6
- 238000006722 reduction reaction Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 235000011089 carbon dioxide Nutrition 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract description 6
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract description 2
- 229910006639 Si—Mn Inorganic materials 0.000 abstract 1
- 238000003723 Smelting Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000019580 granularity Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A method for producing middle- or low-carbon ferromanganese includes such technological steps as pouring the molten carbon ferromaganese into a converter, blowing oxygen by 2.5-3.5 N sq.m/min.T for decarbonizing reaction at 1530-1800 deg.C and smelting while adding slag-forming agent and cooling agent to the converter, stopping oxygen supply when carbon content is less than 2%, passing inertial gas N2 or Ar to it, and stirring while adding Si-Mn alloy as reducer to reduce the manganese partially oxidized when blowing oxygen. Its advantages include short production period and saving energy.
Description
The present invention relates to a kind of use converter produce in, the processing method of low carbon ferromanganese, belong to iron alloy refining field.
In, low carbon ferromanganese is the important source material of steel-making, present electro-silicothermic process, the raw material that uses mainly comes from electric energy as manganese ore, manganese-silicon, lime, the thermal source of use, production cost is than higher, though process stabilizing, maturation does not have potentiality and can dig.For reduce production costs, the exploitation of save energy, urgent need make in, the novel process of low carbon ferromanganese.Present many countries have all carried out a large amount of research to this class technology, and wherein the technology of converter process production iron alloy is low with its cost, and is particularly noticeable etc. advantage.U.S. Pat 5047081 discloses a kind of decarbonization method of fusion Cr metal, European patent EP 446860 disclose a kind of in the converter that has top, bottom blowing melt raw material metal and alloy.But during the Converter Oxigen Blowing method is produced, low carbon ferromanganese, the following problem of ubiquity:
1, volatilization phenomenon, because 1246 ℃ of fusing points of manganese and 2120 ℃ of boiling points are all very low, in the oxygen decarburization process, temperature reaches more than 1600 ℃, causes the manganese volatilization serious, influences the rate of recovery of manganese.
2, splash phenomenon, because in the process that oxygen decarburization carries out gradually, along with the rising of bath temperature, the phenomenon of solution from the fire door ejection can take place in the formation of CO gas, loss is serious, influence operation and manganese recovery ratio.
3, blowing-ouf of lines phenomenon is because in the oxygen decarburization process, the at first oxidation of silicon in the carbon element ferromanganese water forms SIO
2Melt, the etch furnace wall causes converter life short, influences production cost.
Goal of the invention of the present invention is, be the volatilization, splash and the corrosion phenomenon that overcome in the above-mentioned converter production, low carbon ferromanganese technology is brought, provide a kind of simple to operate, manganese recovery ratio is high, can reduce the blowing-ouf of lines, saves in the production of the energy, the novel method of low carbon ferromanganese.
For realizing the purpose of foregoing invention, the present invention has taked following scheme:
The present invention is characterized in that: it is during oxygen decarburization obtains in converter with liquid carbon element ferromanganese, low carbon ferromanganese, and its processing step is as follows successively:
A, oxygen decarburization are that 1220～1300 ℃ liquid carbon element ferromanganese is poured in the converter with temperature, are blown into oxygen in converter, carry out decarburizing reaction, and oxygen supply intensity is controlled at 2.5～3.5Nm
3/ min.T. converting process decarburization temperature is controlled at 1530 ℃～1800 ℃, and duration of blast is 30～45 minutes for per 5 tons; Because in the oxygen decarburization process, the at first oxidation of silicon in the carbon element ferromanganese water forms SIO
2Melt for the protection furnace lining, makes slag become alkalescence, adds slag former lime 50～200Kg/T in the oxygen blown process in stove, is the flowability that guarantees slag, prevents the splash loss, in stove with slag former fluorite 0～200Kg; For the control bath temperature, prevent the volatilization of manganese, in stove, add refrigerant manganese ore 0～200Kg/T and broken in manganese 0～200K/T, when the content of carbon is 2% when following, the decarburization end stops oxygen supply;
Stir, reduction, in stove, add reductive agent silicomanganese 50～200Kg/T, the oxidized manganese of part during fast oxygen blast in the reduction, the while is blown into inert nitrogen gas N in the converter bottom side
2Or argon Ar or carbonic acid gas CO
2, form dynamic conditions, quicken reduction reaction, being blown into intensity is 0.09～0.12Nm
3/ min.T, the reaction finish come out of the stove obtain in, low carbon ferromanganese.
The slag former lime that the present invention is added in carbon rejection process, fluorite are so that basicity of slag is controlled at 1.2～1.3, and stove basicity is CaO and SIO
2The ratio; Raw material granularities such as described silicomanganese, manganese ore, broken middle manganese, fluorite are controlled at about 5～20mm; Oxygen rifle throat diameter to Converter Oxigen Blowing is controlled at 10～20mm.
The present invention compared with prior art has following advantage:
The present invention has changed traditional electro-silicothermic process, adopt the carbon element ferromanganese of converter liquid towards to carry out oxygen decarburization, by strictness control to blowing oxygen quantity, furnace hearth temperature, quality product is met the requirements, the rate of recovery of manganese reaches more than 90%, can improve industrial stability again on the basis that does not increase cost.Simple to operate, ingredient requirement wide ranges that this method has, with short production cycle, save the energy, with the oxo electricity, in being fit to, the large scale continuous prod of low carbon ferromanganese.
Description of drawings of the present invention:
Fig. 1 is a process flow diagram of the present invention.
1 carbon element ferromanganese; 2 lime; 3 fluorites; 4 reductive agent silicomanganeses; 5 oxygen;
6 nitrogen N
2, argon Ar or carbonic acid gas CO
2
7 refrigerant manganese ores and broken middle manganese; 8 oxygen rifle aditus laryngis;
The specific embodiment of the present invention is as follows:
Embodiment 1
Referring to accompanying drawing 1, with liquid carbon element ferromanganese 5T, in its composition (precentagewise content meter, manganese Mn74.5, silicon Si0.2, phosphorus P0.19, carbon C6.7, sulphur S0.004) converter of packing into, oxygen blast in stove, oxygen supply intensity 2.7Nm
3/ min.T, duration of blast 32 minutes adds the broken middle manganese of 100Kg simultaneously, 500Kg lime, after decarburization finished, end rifle switched to rare gas element N
2Or Ar stirs, and adds the 600Kg silicomanganese simultaneously, the manganese oxide in the reducing slag.Reaction finishes and comes out of the stove, and 1500 ℃ of tapping temperatures obtain 5.0 tons of mid-carbon fe-mns (composition is: manganese Mn75.5, silicon Si0.5, phosphorus P0.2, carbon C1.8, sulphur S0.006), basicity of slag R=1.24.
Embodiment 2
With liquid carbon element ferromanganese 50T, in its composition (precentagewise content meter: manganese Mn74.6, silicon Si0.5, phosphorus P0.19, carbon C6.7, sulphur S0.004) converter of packing into, oxygen blast in stove, oxygen supply intensity 3Nm
3/ min.T, duration of blast 40 minutes adds the 200Kg manganese ore simultaneously, 450Kg lime, after decarburization finished, end rifle switched to inert nitrogen gas N
2Stir, the back adds 650Kg silicomanganese, the manganese oxide in the reducing slag, reaction finishes and comes out of the stove, 1570 ℃ of tapping temperatures obtain 4.9 tons of low carbon ferromanganeses (composition is: manganese Mn75.5, silicon SI0.5, phosphorus P0.2, carbon C0.60 sulphur S0.006), basicity of slag R=1.2.
Claims (4)
1, in, production method of low-carbon ferromanganese, it is characterized in that: it is during oxygen decarburization obtains in converter with liquid carbon element ferromanganese (1), low carbon ferromanganese, and its processing step is as follows successively:
A, oxygen decarburization are that 1220～1300 ℃ liquid carbon element ferromanganese (1) is poured in the converter with temperature, are blown into oxygen (5) in converter, carry out decarburizing reaction, and oxygen supply intensity is controlled at 2.5～3.5Nm
3/ min.T, converting process decarburization temperature is controlled at 1530 ℃～1800 ℃, and duration of blast is 30～45 minutes for per 5 tons; Be the protection furnace lining, make slag become the flowability of alkalescence and assurance slag, prevent the splash loss, in stove, add slag former (2) lime 50～200Kg/T in the oxygen blown process, fluorite (3) 0～200Kg, be the control bath temperature, prevent the volatilization of manganese, in stove, add refrigerant (7) manganese ore 0～200Kg/T and broken in manganese 0～200Kg/T, when the content of carbon is 2% when following, decarburization finishes, and stops oxygen supply;
B, stirring, reduction add reductive agent (4) silicomanganese 50～200Kg/T in stove, the oxidized manganese of part when reducing above-mentioned oxygen blast is blown into rare gas element (6) in the converter bottom side simultaneously and stirs, as nitrogen N
2Or argon Ar or carbonic acid gas CO
2, being blown into intensity is 0.09～0.12Nm
3/ min.T quickens reduction reaction, the reaction finish come out of the stove obtain in, low carbon ferromanganese.
2, in according to claim 1, production method of low-carbon ferromanganese, be characterised in that: the slag former that adds in stove (2,3) lime and fluorite are so that basicity of slag is controlled at 1.2～1.3, and basicity of slag is CaO and SiO
2The ratio.
3, in according to claim 1, production method of low-carbon ferromanganese, it is characterized in that: described silicomanganese, manganese ore, broken in manganese and fluorite raw material granularity all be controlled at about 5～20mm.
4, in according to claim 1, production method of low-carbon ferromanganese, it is characterized in that: oxygen rifle aditus laryngis (8) diameter is controlled at 10～20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97123247A CN1057134C (en) | 1997-12-11 | 1997-12-11 | Production method for medium- and low-carbon manganese iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97123247A CN1057134C (en) | 1997-12-11 | 1997-12-11 | Production method for medium- and low-carbon manganese iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1219599A true CN1219599A (en) | 1999-06-16 |
| CN1057134C CN1057134C (en) | 2000-10-04 |
Family
ID=5177029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97123247A Expired - Fee Related CN1057134C (en) | 1997-12-11 | 1997-12-11 | Production method for medium- and low-carbon manganese iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1057134C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439538C (en) * | 2007-02-15 | 2008-12-03 | 刘巍 | Production process of low microcarbon ferromanganese alloy |
| CN101824577A (en) * | 2010-05-31 | 2010-09-08 | 贵州大学 | Production technique of medium-carbon ferromanganese and manganese-enriched slag |
| CN101705417B (en) * | 2009-11-25 | 2011-04-20 | 北京科技大学 | Method for producing medium and low carbon ferromanganese through furnace refining |
| CN102766719A (en) * | 2012-07-30 | 2012-11-07 | 五矿（湖南）铁合金有限责任公司 | Production method of middle-carbon and/or low-carbon ferromanganese |
| TWI396748B (en) * | 2005-12-06 | 2013-05-21 | Sms Siemag Ag | Method and smelting equipment for producing steel with high manganese content and low carbon content |
| CN103643057A (en) * | 2013-11-27 | 2014-03-19 | 攀钢集团研究院有限公司 | Smelting method of medium-carbon ferromanganese |
| CN103643094A (en) * | 2013-11-27 | 2014-03-19 | 攀钢集团研究院有限公司 | Smelting method of high-carbon ferromanganese |
| CN103643056A (en) * | 2013-11-27 | 2014-03-19 | 攀钢集团研究院有限公司 | Smelting method of low-carbon ferromanganese |
| CN106756346A (en) * | 2016-11-28 | 2017-05-31 | 江苏大学 | A kind of method that high carbon ferromanganese prepares low-carbon ferromanganese |
| CN114686736A (en) * | 2022-04-07 | 2022-07-01 | 山西东方资源发展集团有限公司 | Method for converting medium-low carbon ferromanganese by high carbon ferromanganese |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH024938A (en) * | 1988-06-24 | 1990-01-09 | Kawasaki Steel Corp | Manufacture of medium-carbon and low-carbon ferromanganese |
| CN1087127A (en) * | 1992-11-19 | 1994-05-25 | 石福德 | A kind of method of producing medium-low carbon ferromanganese |
| JP2683487B2 (en) * | 1993-05-18 | 1997-11-26 | 水島合金鉄株式会社 | Manufacturing method and manufacturing apparatus for medium / low carbon ferromanganese |
-
1997
- 1997-12-11 CN CN97123247A patent/CN1057134C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI396748B (en) * | 2005-12-06 | 2013-05-21 | Sms Siemag Ag | Method and smelting equipment for producing steel with high manganese content and low carbon content |
| CN100439538C (en) * | 2007-02-15 | 2008-12-03 | 刘巍 | Production process of low microcarbon ferromanganese alloy |
| CN101705417B (en) * | 2009-11-25 | 2011-04-20 | 北京科技大学 | Method for producing medium and low carbon ferromanganese through furnace refining |
| CN101824577A (en) * | 2010-05-31 | 2010-09-08 | 贵州大学 | Production technique of medium-carbon ferromanganese and manganese-enriched slag |
| CN102766719A (en) * | 2012-07-30 | 2012-11-07 | 五矿（湖南）铁合金有限责任公司 | Production method of middle-carbon and/or low-carbon ferromanganese |
| CN103643094A (en) * | 2013-11-27 | 2014-03-19 | 攀钢集团研究院有限公司 | Smelting method of high-carbon ferromanganese |
| CN103643057A (en) * | 2013-11-27 | 2014-03-19 | 攀钢集团研究院有限公司 | Smelting method of medium-carbon ferromanganese |
| CN103643056A (en) * | 2013-11-27 | 2014-03-19 | 攀钢集团研究院有限公司 | Smelting method of low-carbon ferromanganese |
| CN103643056B (en) * | 2013-11-27 | 2015-09-16 | 攀钢集团研究院有限公司 | The smelting process of low carbon ferromanganese |
| CN103643094B (en) * | 2013-11-27 | 2015-10-14 | 攀钢集团研究院有限公司 | The smelting process of high carbon ferromanganese |
| CN106756346A (en) * | 2016-11-28 | 2017-05-31 | 江苏大学 | A kind of method that high carbon ferromanganese prepares low-carbon ferromanganese |
| CN106756346B (en) * | 2016-11-28 | 2018-12-14 | 江苏大学 | A method of low-carbon ferromanganese is prepared with high carbon ferromanganese |
| CN114686736A (en) * | 2022-04-07 | 2022-07-01 | 山西东方资源发展集团有限公司 | Method for converting medium-low carbon ferromanganese by high carbon ferromanganese |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057134C (en) | 2000-10-04 |
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