CN101775508B - Production method of low-carbon ferromanganese - Google Patents
Production method of low-carbon ferromanganese Download PDFInfo
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- CN101775508B CN101775508B CN2010101028735A CN201010102873A CN101775508B CN 101775508 B CN101775508 B CN 101775508B CN 2010101028735 A CN2010101028735 A CN 2010101028735A CN 201010102873 A CN201010102873 A CN 201010102873A CN 101775508 B CN101775508 B CN 101775508B
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 61
- 229910000616 Ferromanganese 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 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 239000011572 manganese Substances 0.000 claims abstract description 68
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 54
- 239000002893 slag Substances 0.000 claims abstract description 48
- 238000007670 refining Methods 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000003723 Smelting Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000010790 dilution Methods 0.000 claims abstract description 12
- 239000012895 dilution Substances 0.000 claims abstract description 12
- 238000007600 charging Methods 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 30
- 229910000720 Silicomanganese Inorganic materials 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000571 coke Substances 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 229910000805 Pig iron Inorganic materials 0.000 claims description 2
- 241001417490 Sillaginidae Species 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 230000008676 import Effects 0.000 description 10
- 239000000126 substance Substances 0.000 description 9
- 229910052681 coesite Inorganic materials 0.000 description 8
- 229910052906 cristobalite Inorganic materials 0.000 description 8
- 239000000377 silicon dioxide Substances 0.000 description 8
- 235000012239 silicon dioxide Nutrition 0.000 description 8
- 229910052682 stishovite Inorganic materials 0.000 description 8
- 229910052905 tridymite Inorganic materials 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 229910052593 corundum Inorganic materials 0.000 description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229910018540 Si C Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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Abstract
The invention discloses a production method of low-carbon ferromanganese. The method comprises: smelting manganese-rich slag in a blast furnace, producing the low-carbon ferromanganese in a refining electric furnace, carrying out external shaking ladle dilution processing on refining slag. The production method is characterized in that three production methods of smelting the manganese-rich slag in the blast furnace, producing the low-carbon ferromanganese in the refining electric furnace and carrying out extenal shaking ladle dilution processing on the refining slag are organically connected and are in linkage operation; and the smelting pilot process (liquid manganese-rich slag->refining electric furnace and liquid low-carbon ferromanganese->refining electric furnace and refined slag->external shaking ladle) is performed with hot charging and hot adding to produce the low-carbon ferromanganese conforming to the national standard (GB/T3795-1996). The invention successfully solves the problems of shortage of raw material resources used for production, high cost, high comprehensive energy consumption of products and high product production cost in the existing low-carbon ferromanganese production process.
Description
Technical field
The invention belongs to the metallurgical engineering technical field, specifically is a kind of production method of low-carbon ferromanganese.
Background technology
Low carbon ferromanganese is mainly used in steel-making or casting industry uses as alloy addition, especially is widely used in steel grade productions such as plate in the steel industry, pipe, band.
At present the The ferroalloy industry traditional method of producing low carbon ferromanganese has two kinds: the one, and remelting process is to be that raw material is produced with the middle frequency furnace remelting with electrolytic metal Mn and iron and steel scrap.There is not chemical reaction to take place in the production process.This method is simple, but product comprehensive energy consumption high (by the about 5600Kwh/ ton of the comprehensive power consumption of manganese metal power consumption 6000Kwh/ ton product) is restricted by electrolytic metal Mn resource and price simultaneously, and production cost is high, and sulphur content is often higher in the product.The 2nd, electro-silicothermic process is with high silicon silicomanganese (or low-carbon (LC) silicomanganese) and high-quality (the low iron of high manganese is low-phosphorous) import manganese ore desiliconization production in electric refining furnaces.This method is low slightly than the remelting process production cost; But receive the restriction of high silicon silicomanganese (or low-carbon (LC) silicomanganese) and high-quality import manganese resource and price; Production cost is also higher; And product comprehensive energy consumption also higher (by the about 5200kwh/ ton of the high comprehensive power consumption of silicon silicomanganese power consumption 5400Kwh/ ton product), and be difficult to produce the high-quality low carbon ferromanganese product of P＜0.15%.It is as shown in Figure 1 that electro-silicothermic process is produced the low carbon ferromanganese technical process.
Above-mentioned two kinds of methods of producing low carbon ferromanganese are compared; Electro-silicothermic process has comparative advantages than remelting process; But there are obvious three big deficiencies in the restriction that all receives production technique, selects raw material resources and price for use in the low carbon ferromanganese production process: the one, and production is nervous with the main raw material resource, price is high; The 2nd, the product comprehensive energy consumption is high; The 3rd, the products production cost is high.The invention of this technology has successfully solved above-mentioned three big deficiencies.
Summary of the invention
The present invention is in order to overcome the deficiency of prior art; Provide a kind of the rich manganese slag of blast-furnace smelting, electric refining furnaces are produced low carbon ferromanganese, the operation of three kinds of working method organic linking linkages of the outer shaking ladle dilution processing of refining slag hearth, produce the method for the low carbon ferromanganese of National standard (GB/T3795-1996).Its technological process of production is as shown in Figure 2:
The technical scheme that the present invention solves the problems of the technologies described above is following:
A kind of production method of low-carbon ferromanganese is that the rich manganese slag of blast-furnace smelting, electric refining furnaces are produced low carbon ferromanganese, the operation of three kinds of working method organic linking linkages of the outer shaking ladle dilution processing of refining slag hearth; Produce the low carbon ferromanganese of National standard (GB/T3795-1996), the concrete operations steps in sequence is following:
1) at first be low manganese ferric manganese ore to be carried out selective reduction with coke smelt in blast furnace, remove iron and impurity element phosphorus in the manganese ore, blast-furnace smelting is produced manganese content greater than 35% rich manganese slag, output sub product phosphoric pig iron simultaneously;
2) the liquid rich manganese slag hot charging produced of blast furnace gets into electric refining furnaces, and liquid low-carbon (LC) silicomanganese hot charging in electric refining furnaces of producing with the outer shaking ladle of next procedure stove mixes, and other allocates lime slag making refining desiliconization into and produces qualified low carbon ferromanganese product;
3) the electric refining furnaces liquid slag that contains the about 20%-25% of manganese is directly poured shaking ladle into, and shaking ladle machine top is shaken the limit and added ferrosilicon or Pure Silicon Metal and slag is carried out dilution handle outside stove; Contain Mn＜direct shrend of 8% shaking ladle finishing slag, the liquid low-carbon (LC) silicomanganese hot charging entering electric refining furnaces that the while output contains C＜0.3% carries out next stove smelting low carbon ferromanganese.
Above-mentioned steps 1) this operation is following to the requirement of manganese ore and coke:
The manganese ore quality should reach following requirement:
Chemical ingredients Mn Fe Mn+Fe P SiO2 Al2O3
Weight ratio (%)＞25＞15＞50＜0.1＜8＜10
The coke quality should reach following requirement:
Fixed carbon content ash oontent intensity granularity
The burnt standard 30-80mm of >=85%＜13% one-level
Above-mentioned steps 2) this operation is following to the requirement of rich manganese slag, low-carbon (LC) silicomanganese and lime:
The rich manganese slag of blast furnace output quality should reach following requirement:
Chemical Composition Mn Fe P SiO2 Al2O3
Weight ratio (%)＞35＜3＜0.03＜12＜15
Shaking ladle output low-carbon (LC) silicomanganese quality should reach following requirement:
Chemical Composition Mn Si C P
Weight ratio (%)＞65＞13＜0.3＜0.15
The lime quality should reach following requirement:
Composition or require CaO SiO2 to give birth to burning, burning and be mingled with
Weight ratio (%)＞85＜3＜10
Above-mentioned steps 3) this operation should reach following requirement to ferrosilicon or Pure Silicon Metal quality:
Chemical Composition Si C P
Weight ratio (%) >=70＜0.2＜0.1
The present invention and prior art compare, and outstanding substantive distinguishing features and marked improvement show as following several respects:
1. creatively the rich manganese slag of blast-furnace smelting, electric refining furnaces are produced low carbon ferromanganese, three technologies combinations of the outer shaking ladle dilution processing of refining slag hearth; Smelting the whole hot charging heat of pilot process (liquid rich manganese slag → electric refining furnaces, liquid low-carbon (LC) silicomanganese → electric refining furnaces, the outer shaking ladle of refining slag → stove) converts, can practice thrift the products production power consumption significantly and reduce the products production cost.
2. substitute the low iron import manganese ore of the high high manganese of valency of fine quality with aboundresources and cheap low manganese high ferro import manganese ore; Utilize the rich manganese slag of blast furnace production pyrogenic process process of enriching to produce high-quality rich manganese slag (Mn＞35% that meets the low carbon ferromanganese production requirement; Fe＜3%; P＜0.03%, SiO2＜12%, Al2O3＜15%).Both reduce the products production cost, improved product quality again, realized utilizing fully efficiently external lean ore resource.
3. be that reductive agent utilizes the outer shaking ladle of stove that the refining slag dilution is handled with ferrosilicon or Pure Silicon Metal, produce the low-carbon (LC) silicomanganese (Mn＞65%, Si＞13%, C＜0.30%, P＜0.15%) that meets the low carbon ferromanganese production requirement simultaneously.
Description of drawings
Fig. 1 is that electro-silicothermic process is produced the low carbon ferromanganese process flow sheet.
Fig. 2 is the process flow sheet of a kind of production method of low-carbon ferromanganese of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is further described.But need to prove that embodiment does not constitute the restriction to claim protection domain of the present invention.
Embodiment
1. blast-furnace smelting is produced liquid rich manganese slag: go into blast-furnace smelting after using two kinds low manganese high ferro import manganese ores and coke by following mixed preparation:
Raw material type import manganese ore 1 import manganese ore 2 coke
Every batch of material dry weight (Kg) 450 450 250
Manganese ore quality (by weight) is as follows:
Manganese ore Chemical Composition Mn Fe Mn+Fe P SiO2 Al2O3
Import manganese ore 1 weight ratio (%) 25 31 56 0.04 3.0 4.5
Import manganese ore 2 weight ratios (%) 25 29 54 0.06 3.0 5.5
Mix manganese ore weight ratio (%) 25 30 55 0.05 3.0 5.0
Coke quality (by weight) is as follows:
Fixation of C 84% ash oontent 13% (contain SiO2 40% in the ash content, Al2O3 25%, and P 0.3%)
The rich manganese dreg chemistry composition (by weight) of blast-furnace smelting output is as follows:
Rich manganese dreg chemistry composition Mn Fe P SiO2 Al2O3
Weight ratio (%) 44 2 0.02 8.3 11.6
This richness manganese slag satisfies the low carbon ferromanganese production requirement fully, and direct heat is put into electric refining furnaces.
2. electric refining furnaces is smelted and produced low carbon ferromanganese: the liquid low-carbon (LC) silicomanganese that the liquid rich manganese slag and the next procedure (the outer shaking ladle of stove) of blast furnace production are produced gets into electric refining furnaces through metering by following weight proportion hot charging, and the while is allocated an amount of lime slag making in proportion into and smelts:
The electric refining furnaces liquid low-carbon (LC) silicomanganese of the liquid rich manganese slag lime of preparing burden
Weight (Kg) 1,000 950 700
Electric refining furnaces is smelted and to be produced the low carbon ferromanganese product of National standard (GB/T3795-1996) and to contain the refining slag about Mn22%, its typical chemical ingredients (weight meter) as follows:
Low carbon ferromanganese chemical ingredients Mn Si C P S Fe and other
Weight ratio (%) 84 1.0 0.25 0.12 0.01 surpluses
Refining slag chemical ingredients Mn SiO2 CaO
Weight ratio (%) 22 35 42
The low carbon ferromanganese product of producing is through cast, finishing warehouse-in, and refining slag is gone into the shaking ladle dilution and handled.
3. the outer shaking ladle of stove is produced the low-carbon (LC) silicomanganese: directly pour the refining slag that contains Mn about 22% of electric refining furnaces output into shaking ladle; Shake the limit adds ferrosilicon (FeSi75) powder (add-on be about the quantity of slag about 12%) and makes reductive agent dilution slag in shaking ladle machine top; Can make to contain Mn in the slag the direct shrend of finishing slag less than 8%.Produce the low-carbon (LC) silicomanganese hot charging of following quality simultaneously and go into the smelting that electric refining furnaces carries out next stove low carbon ferromanganese:
Low-carbon (LC) silicomanganese chemical ingredients Mn Si C P
Weight ratio (%) 70 16 0.2 0.08
The main material of above-mentioned examples produce low carbon ferromanganese product, energy consumption are following:
Name of an article import manganese ore coke ferrosilicon lime
The ton product consumes 3500Kg 950Kg 450Kg 700Kg 550Kwh
Product quality reaches the GB FeMn84C0.4Si I P I trade mark.
Claims (1)
1. production method of low-carbon ferromanganese; Comprise that the rich manganese slag of blast-furnace smelting, electric refining furnaces are produced low carbon ferromanganese, the outer shaking ladle dilution of refining slag hearth is handled; It is characterized in that; This method is handled the operation of three kinds of production stage organic linking linkages with blast-furnace smelting richness manganese slag, electric refining furnaces production low carbon ferromanganese, the outer shaking ladle dilution of refining slag hearth, smelts pilot process, and promptly liquid rich manganese slag entering electric refining furnaces, liquid low-carbon (LC) silicomanganese entering electric refining furnaces, refining slag get into the outer whole hot charging heat of shaking ladle of stove and convert; Produce the low carbon ferromanganese of National standard GB/T3795-1996, the concrete operations steps in sequence is following:
1) at first be with the low manganese ferric manganese ore that meets following quality requirements: Mn＞25 weight %, Fe＞15 weight %, Mn+Fe＞50 weight %, P＜0.1 weight %, SiO
2＜8 weight %, Al
2O
3＜10 weight % use the coke that meets following quality requirements in blast furnace: fixed carbon>=85 weight %, ash content＜13 weight %, intensity reach the burnt standard of one-level, granularity is that 30-80mm carries out the selective reduction smelting; Remove iron and impurity element phosphorus in the manganese ore; Blast-furnace smelting is produced manganese content greater than 35% rich manganese slag, simultaneously output sub product phosphoric pig iron;
2) blast furnace is produced the liquid rich manganese slag that meets following quality requirements: Mn＞35 weight %, Fe＜3 weight %, P＜0.03 weight %, SiO
2＜12 weight %, Al
2O
3＜15 weight % hot chargings get into electric refining furnaces; Produce the liquid low-carbon (LC) silicomanganese that meets following quality requirements: Mn＞65 weight %, Si＞13 weight %, C＜0.3 weight %, P＜0.15 weight % hot charging in electric refining furnaces with the outer shaking ladle of next procedure stove and mix, other allocates the lime that meets following quality requirements: CaO＞85 weight %, SiO into
2＜3 weight %, give birth to burning, burning and be mingled with＜10 weight % slag making refining desiliconizations produce qualified low carbon ferromanganese product;
3) refining slag that contains manganese 20-25% of electric refining furnaces output is directly poured shaking ladle into, and ferrosilicon or the Pure Silicon Metal that the limit adding meets following quality requirements shaken in shaking ladle machine top outside stove: Si >=70 weight %, C＜0.2 weight %, P＜0.1 weight % carry out dilution to refining slag to be handled; Contain Mn＜direct shrend of 8 weight % shaking ladle finishing slags, the liquid low-carbon (LC) silicomanganese hot charging entering electric refining furnaces that the while output contains C＜0.3% carries out next stove smelting low carbon ferromanganese.
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| CN101775508B true CN101775508B (en) | 2012-05-30 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643057B (en) * | 2013-11-27 | 2015-09-16 | 攀钢集团研究院有限公司 | The smelting process of mid-carbon fe-mn |
| 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 |
| CN104060110A (en) * | 2014-05-08 | 2014-09-24 | 无锡市阳泰冶金炉料有限公司 | Reaction device for extracting manganese metal from manganese-rich slags |
| CN105112661A (en) * | 2015-08-10 | 2015-12-02 | 云南文山斗南锰业股份有限公司 | Method for preparing silicomanganese with high silicon |
| FI127451B (en) * | 2015-11-24 | 2018-06-15 | Outotec Finland Oy | Method and apparatus for preheating and smelting manganese ore sinter |
| CN105624438B (en) * | 2016-02-02 | 2018-06-19 | 镇远县鸿丰新材料有限公司 | A kind of method using poor manganese slag refining ferromanganese alloy |
| CN106086608B (en) * | 2016-06-22 | 2017-12-15 | 五矿（湖南）铁合金有限责任公司 | A kind of method that low-carbon manganese-silicon is produced using carbon manganese slag |
| CN108588447A (en) * | 2018-06-14 | 2018-09-28 | 宁夏晟晏实业集团能源循环经济有限公司 | A kind of production method of metal manganese ingot |
| CN108796252A (en) * | 2018-06-14 | 2018-11-13 | 宁夏晟晏实业集团能源循环经济有限公司 | A kind of production method of pure micro-carbon ferromanganese |
| CN110257629B (en) * | 2019-06-21 | 2023-06-20 | 宁夏森源重工设备有限公司 | Full-hot-charging production line and production process for ferromanganese production |
| CN112921222A (en) * | 2021-02-04 | 2021-06-08 | 山西东方资源发展有限公司 | Method for smelting low-phosphorus low-carbon silicon-manganese alloy |
| CN117248128A (en) * | 2023-10-13 | 2023-12-19 | 百色智成新材料科技有限公司 | Treatment method of ferromanganese wet waste residues |
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| CN1382824A (en) * | 2002-02-28 | 2002-12-04 | 湖南特种金属材料厂 | Process for preparing low-carbon ferromanganese by induction furnace |
| CN1438337A (en) * | 2003-03-11 | 2003-08-27 | 朱兴发 | Apparatus for producing low-carbon ferromanganese iron using manganese-rich slay |
| CN1220786C (en) * | 2003-03-11 | 2005-09-28 | 朱兴发 | Production process for low-carbon ferromanganese iron using manganese-rich slag and apparatus thereof |
| CN101368244A (en) * | 2007-08-15 | 2009-02-18 | 周孝华 | Low-carbon ferromanganese manufacturing technique |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382824A (en) * | 2002-02-28 | 2002-12-04 | 湖南特种金属材料厂 | Process for preparing low-carbon ferromanganese by induction furnace |
| CN1438337A (en) * | 2003-03-11 | 2003-08-27 | 朱兴发 | Apparatus for producing low-carbon ferromanganese iron using manganese-rich slay |
| CN1220786C (en) * | 2003-03-11 | 2005-09-28 | 朱兴发 | Production process for low-carbon ferromanganese iron using manganese-rich slag and apparatus thereof |
| CN101368244A (en) * | 2007-08-15 | 2009-02-18 | 周孝华 | Low-carbon ferromanganese manufacturing technique |
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