CN102796870A - Method for quickly proportioning in process of smelting medium-low-carbon ferromanganese alloy by using 15m<3> large-scale pre-smelting device - Google Patents
Method for quickly proportioning in process of smelting medium-low-carbon ferromanganese alloy by using 15m<3> large-scale pre-smelting device Download PDFInfo
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- CN102796870A CN102796870A CN2012103130440A CN201210313044A CN102796870A CN 102796870 A CN102796870 A CN 102796870A CN 2012103130440 A CN2012103130440 A CN 2012103130440A CN 201210313044 A CN201210313044 A CN 201210313044A CN 102796870 A CN102796870 A CN 102796870A
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Abstract
The invention relates to a method for quickly proportioning in process of smelting medium-low-carbon ferromanganese alloy by using a 15m<3> large-scale pre-smelting device. The proportion of manganese ore is that the pre-smelted manganese-silicon alloy comprises b percent of silicon; the mixed manganese ore comprises Mn-ore percent of manganese and Fe-ore percent of iron; in the manganese-silicon alloy, the mass A of the silicon subjected to reduction reaction is equal to (0.212*Mn-ore+0.237.Fe-ore); the mass B of the pre-smelted manganese-silicon alloy is equal to (28.2*Mn-ore+31.5*Fe-ore)/b; the batch number N of the mixed manganese ore is equal to 100G*b/(28.2*Mn-ore+31.5*Fe-ore). The proportion of the iron ore is that: judging whether Mn-actual ore/Fe-actual ore is less than Mn-alloy/Fe-alloy or not; if Mn-actual ore/Fe-actual ore is less than Mn-alloy/Fe-alloy, exchanging high-grade ferromanganese and recalculating the value of Mn-alloy/Fe-alloy and judging; if Mn-actual ore/Fe-actual ore is not less than Mn-alloy/Fe-alloy, continuously judging; if Mn-actual ore/Fe-actual ore is equal to Mn-alloy/Fe-alloy, not adding iron ore and directly smelting; and if Mn-actual ore/Fe-actual ore is more than Mn-alloy/Fe-alloy, adding iron ore, wherein the proportion of the iron ore is Ykg and Y is equal to Mn-actual ore Fe-alloy/(Mn-alloy - Fe-actual ore). The proportioning method is quick, accurate and simple; the proportion of the manganese ore and the iron ore can be accurately controlled; each index is optimized; and production cost is reduced.
Description
Technical field
The present invention relates to a kind of cooperation 15m
3Large-scale preparatory refining device produce in, the low carbon ferromanganese alloy method of batching fast.
Background technology
The method of at present, producing the medium-low carbon ferromanganese alloy is that slag mixed the 15m that packs into before the liquid manganese-silicon that utilizes to be gone out by mine heat furnace smelting and middle manganese shook
3Refine in advance in the large-scale preparatory refining device, will refine the back manganese-silicon then in advance and pour the manganese ore of allocating in electric refining furnaces and the stove (manganese ore, iron ore and lime) that mixes into and continue to react, until smelt qualified in, the low carbon ferromanganese alloy.
During production, the control of manganese ore, the iron ore amount of allocating into need be according to Calculation of chemical equilibrium, calculation of complex, and calculated amount is big; But also to consider refining step in advance in the refining device in advance; It is more loaded down with trivial details to calculate content, and operator's chemistry and mathematics level are had relatively high expectations, and makes a mistake in case calculate; The manganese ore and the iron ore that will cause allocating into are too much or very few; Cause the rising of ore deposit consumption or the increase of melting electric consumption at last, even produce unacceptable product, extremely unfavorable to producing.
Summary of the invention
The invention provides a kind of 15m of utilization
3During large-scale preparatory refining device is smelted, the low carbon ferromanganese alloy method of batching fast, this method fast, accurately, succinct, manganese ore and the iron ore amount of allocating into can accurately be controlled, and optimize each item index, reduce production costs.
Technical solution of the present invention is:
A kind of 15m that utilizes
3The method that large-scale preparatory refining device refines in the smelting, the low carbon ferromanganese alloy is prepared burden fast, its special character is:
The refining furnace manganese ore amount of allocating into:
Detection manganese-silicon quality, manganese content, silicon content are counted G t, L%, a% respectively before the refining in advance, and preparatory refining back is detected the preparatory manganese-silicon silicon content that refines and counted b%; Mixing the every 100kg of manganese ore is 1 batch of material, mixes the manganese ore manganese content and counts Mn
The ore deposit%, iron-holder are counted Fe
The ore deposit%;
Every batch mixing closes the siliceous amount of participating in reduction reaction in the manganese-silicon that manganese ore allocates into and counts Akg, A=0.212 Mn
The ore deposit+ 0.237 Fe
The ore deposit
Every batch mixing closes the manganese-silicon quality of the preparatory refining that manganese ore allocates into and counts Bkg, B=(28.2 Mn
The ore deposit+ 31.5 Fe
The ore deposit)/b;
Required mixing manganese ore charge number is counted N, N=100G * b/ (28.2 Mn
The ore deposit+ 31.5 Fe
The ore deposit);
The refining furnace iron ore amount of allocating into
Manganese content in the different varieties that will smelt, in the low carbon ferromanganese alloy, silicon content, carbon content are counted Mn respectively
In%, Si
In%, C
In%, actual measurement mixes manganese content, the iron-holder of manganese ore and counts Mn respectively
Actual ore deposit%, Fe
Actual ore deposit%, refining back manganese-silicon manganese content, iron-holder are counted Mn respectively in advance
In advance after the refining%, Fe
In advance after the refining%, every batch mixing close manganese ore and count Mn respectively through the quality of manganese element, ferro element in the entering manganese-silicon after preparatory refining and the refining
AlloyKg, Fe
AlloyKg, definition coefficient k, C, D, E;
k＝（1+2.93 a%）/(1+2.93 b%)；
Mn
In advance after the refining%=(L%+3.93 (a%-k * b%))/k;
Mn
Alloy=0.3 Mn
The ore deposit+ 1.33 A * Mn
In advance after the refining/ b, Fe
Alloy=0.95 Fe
The ore deposit+ 1.33 A * Fe
In advance after the refining/ b;
C=Mn
In advance after the refining/ b;
D=Fe
In advance after the refining/ b;
E={ 1-(Mn
In%+Si
In%+C
In%) }/Mn
In%;
Mn
Alloy/ Fe
Alloy=(0.315 C * E-0.315 D-0.95)/(0.282 D-0.282 C * E-0.3 E);
Calculate Mn
Actual ore deposit/ Fe
Actual ore depositValue, judge Mn
Actual ore deposit/ Fe
Actual ore depositWith Mn
Alloy/ Fe
AlloyMagnitude relationship;
Judge Mn
Actual ore deposit/ Fe
Whether actual ore depositLess than Mn
Alloy/ Fe
Alloy, when less than the time, change high-grade manganese ore, recomputate Mn
Alloy/ Fe
AlloyValue, judge Mn
Actual ore deposit/ Fe
Actual ore depositWith Mn
Alloy/ Fe
AlloyMagnitude relationship;
When being not less than, continue to judge Mn
Actual ore deposit/ Fe
Whether actual ore depositEqual Mn
Alloy/ Fe
Alloy, when equaling, do not add iron ore, directly smelt; Work as Mn
Actual ore deposit/ Fe
Actual ore deposit＞Mn
Alloy/ Fe
Alloy, adding iron ore, the iron ore amount of allocating into is Ykg, Y=Mn
Actual ore depositFe
Alloy/ Mn
Alloy-Fe
Actual ore deposit
Utilize 15m
3Large-scale preparatory refining device refines in the smelting, the technical process of low carbon ferromanganese alloy is as shown in Figure 1:
One, the actual manganese ore amount of allocating into
1, manganese-silicon is refining reaction in the refining device in advance in advance
The reaction of refining link is in advance:
Si + 2MnO=2Mn+SiO
2
28 110
110:28=3.93:1
Can be known by following formula, whenever take off the silicon of 1 unit weight value, it is 3.93 weight unit that manganese-silicon increases the manganese amount, and the manganese-silicon weightening finish is 2.93 weight unit;
Manganese-silicon is weighed as G t before the refining in advance, and refining back manganese-silicon is weighed as X t in advance, and through detecting, the manganese-silicon silicon content is that a%, manganese content are L% before the refining in advance, and refining back manganese-silicon is siliceous in advance is b%, according to above-mentioned reaction equation equality is arranged then:
X =G +2.93 (G×a%-X×b%) （1）
If k=(1+2.93 a%)/(1+2.93 b%) then obtains X=k * G,
If refining back manganese-silicon manganese content is Mn in advance
In advance after the refining% then then has equality according to above-mentioned reaction equation:
Mn
In advance after the refining%=(L%+3.93 (a%-k * b%))/k.
2, manganese-silicon carries out purifying reaction in refining furnace after refining in advance
If mix the manganese ore composition in the adding stove: manganese content is Mn
The ore deposit%, iron-holder are Fe
The ore deposit%;
Explain: mix manganese ore (100kg) when the refining furnace purifying reaction, mix the Mn in the manganese ore
The ore deposit30% goes into alloy, 20% volatilization, Fe
The ore deposit95% goes into alloy, and the utilization ratio of silicon gets 75%;
The refining furnace internal reaction:
2MnO
2=Mn
2O
3+1/2O
2↑ 570℃ （2）
3Mn
2O
3=2Mn
3O
4+1/2 O
2↑ 900℃ （3）
Manganese ore mainly is with MnO
2Form exists, MnO in (2), (3) formula
2And Mn
2O
3All do not need reductive agent, at high temperature can decompose MnO
2Be converted to Mn
3O
4Quality be 100 * Mn
The ore deposit% * 229 ÷ 165=1.388 Mn
The ore deposit
Mn
3O
4+ Si = 3MnO+CO↑ （4）
458 28 426
1.388 Mn
The ore depositX1 Y
1. reduce Mn
3O
4The siliceous amount of need be: X1=1.388 * Mn
The ore deposit* 28 ÷ 458=0.0849 Mn
The ore deposit,
Mn
3O
4The MnO quality that is reduced production is: Y=1.388 * Mn
The ore deposit* 426 ÷ 458=1.291 Mn
The ore deposit,
The MnO quality of participating in reaction is 1.291 * Mn
The ore deposit* (20%+30%)=0.6445 Mn
The ore deposit, all the other go into slag;
2MnO + Si= 2Mn+SiO
2 （5）
142 28
0.6445Mn
The ore depositX2
2. the siliceous amount of need of MnO of reducing is: X2=0.6445Mn
The ore deposit* 28/142=0.1273 Mn
The ore deposit,
The FeO quality of participating in reaction is: 100 * Fe
The ore deposit% * 72 ÷, 56 * 95%=1.221 Fe
The ore deposit, all the other go into slag;
2FeO + Si= 2Fe+SiO
2 （6）
144 28
1.221 Fe
The ore depositX3
3. the siliceous amount of need of FeO of reducing is: X3=1.221 Fe
The ore deposit* 28 ÷ 144=0.2374 Fe
The ore deposit
There is silicon participation reductive to be reflected in (4), (5), (6) formula and takes place, need siliceous amount be: X1+X2+X3=0.0849 Mn
The ore deposit+ 0.1273 Mn
The ore deposit+ 0.2374 Fe
The ore deposit, the quality of promptly refining silicon in the manganese-silicon of back in advance;
Adding the siliceous amount A that participates in reduction reaction in the manganese-silicon is: A=0.212 Mn
The ore deposit+ 0.237 Fe
The ore deposit(7)
Need adding to be: B=(28.2 Mn through the manganese-silicon quality B that preparatory refining device refines in advance
The ore deposit+ 31.5 Fe
The ore deposit)/b (8)
The manganese-silicon quality B required according to 100kg mixing manganese ore, then a certain stove the manganese-silicon preceding quality of refining in advance are Gt, convert out required mixing manganese ore charge number (100kg is 1 batch) N and are:
N=100 G/B=100 G * b/ (28.2 Mn
The ore deposit+ 31.5 Fe
The ore deposit) (9)
Two, iron ore add-on
Every batch mixing closes the quality that manganese ore establishes through Mn, Fe element in the entering alloy after preparatory refining and the refining and is respectively Mn
AlloyKg, Fe
AlloyKg,
Mn
Alloy=100 * Mn
The ore deposit% * 30%+B * Mn
In advance after the refining%=0.3 Mn
The ore deposit+ 1.33 A * Mn
In advance after the refining/ b (10)
Fe
Alloy=100 * Fe
The ore deposit% * 0.95+B * Fe
In advance after the refining%=0.95 Fe
The ore deposit+ 1.33 A * Fe
In advance after the refining/ b (11)
If C=Mn
In advance after the refining/ b, D=Fe
In advance after the refining/ b,
Mn then
Alloy=0.3 Mn
The ore deposit+ 1.33 A * C (12)
Fe
Alloy=0.95 Fe
The ore deposit+ 1.33 A * D (13)
If Mn
In%, Si
In%, C
In% for to smelt different varieties in, manganese content, silicon content, carbon content in the low carbon ferromanganese alloy,
Fe
Alloy=[1-(Mn
In%+Si
In%+C
In%)] Mn
Alloy/ Mn
In% (14)
Bring (12), (13) into (14), establish E={ 1-(Mn
In%+Si
In%+C
In%) }/Mn
In%,
Mn then
Alloy/ Fe
Alloy=(0.315 C * E-0.315 D-0.95)/(0.282 D-0.282 C * E-0.3 E).
The invention has the beneficial effects as follows:
Distribution fast, accurately, succinctly; Operator search coefficient according to production trade mark, do simple addition subtraction multiplication and division and calculate just can produce and stablize qualified product, avoid too much calculating; And the result is more accurate; Realize the accurate control of manganese ore and the iron ore amount of allocating into, optimized each item index, reduced production cost.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is a batching schema of the present invention.
Embodiment
Smelt the mid-carbon fe-mn alloy product of Mn75Fe18Si2.0C2.0, manganese-silicon is Mn64Fe18Si16C2.0 before the refining in advance.
(1) the manganese ore amount of allocating into during refining
Manganese-silicon before the preparatory refining is weighed, its quality G=15t, manganese-silicon silicone content a%=16% before the preparatory refining, the preceding manganese-silicon manganese content L%=64% of refining detects refining back manganese-silicon silicon content b%=11% in advance in advance, and establishing the every 100kg of mixing manganese ore is 1 batch of material, manganese content Mn in the ore deposit
The ore deposit%=49%, iron-holder Fe
The ore deposit%=4%;
Every batch mixing closes the siliceous amount of participating in reduction reaction in the manganese-silicon that manganese ore allocates into:
A=0.212 Mn
The ore deposit+ 0.237 Fe
The ore deposit=0.212 * 49+0.237 * 4=11.34kg;
The manganese-silicon quality that every batch mixing closes the preparatory refining that manganese ore allocates into is:
B=A/（75％×b％）=133 A/b=11.34/（75％×11％）=137.5kg；
Required mixing manganese ore charge is counted N and is:
N=100 G * b/ (28.2 Mn
The ore deposit+ 31.5 Fe
The ore deposit)=100 * 15 * 11/ (28.2 * 49+31.5 * 4)=11.
(2) the iron ore amount of allocating into during refining
k＝（1+2.93 a%）/(1+2.93 b%)=1.11；
Refine back manganese-silicon manganese content Mn in advance
In advance after the refining%={ L%+3.93 (a%-k b%) }/k=71.1%;
Refine back manganese-silicon iron-holder Fe in advance
In advance after the refining%=1-Mn
In advance after the refining%-Si
In advance after the refining%-C
In advance after the refining%=1-71.1%-11%-2%=15.9%;
C=Mn
In advance after the refining/ b=71.1 ÷ 11=6.46;
D=Fe
In advance after the refining/ b=15.9 ÷ 11=1.45;
Manganese content, silicon content, the carbon content of smelting in the mid-carbon fe-mn alloy are respectively Mn
In%, Si
In%, C
In%, then E={ 1-(Mn
In%+Si
In%+C
In%) }/Mn
In%=(1-75%-2%-2%) ÷ 75%=0.28;
Mn
Alloy/ Fe
Alloy=(0.315 C * E-0.315 D-0.95)/(0.282 D-0.282 C * E-0.3 E)=(÷ (0.282 * 1.45-0.282 * 6.46 * 0.23-0.3 * 0.23)=-0.837/ (0.185)=4.5 of 0.315 * 6.46 * 0.23-0.315 * 1.45-0.95).
(3) survey manganese content, iron-holder in the mixing manganese ore and count Mn respectively
Actual ore deposit%, Fe
Actual ore deposit% calculates Mn
Actual ore deposit/ Fe
Actual ore depositValue, judge Mn
Actual ore deposit/ Fe
Whether actual ore depositLess than Mn
Alloy/ Fe
Alloy, as shown in Figure 2, work as Mn
Actual ore deposit/ Fe
Actual ore deposit=44/10=4.4＜Mn
Alloy/ Fe
Alloy=4.5, need to change high-grade manganese ore, recomputate Mn
Actual ore deposit/ Fe
Actual ore depositValue, judge Mn
Actual ore deposit/ Fe
Actual ore depositWith Mn
The ore deposit/ Fe
The ore depositMagnitude relationship; Work as Mn
Actual ore deposit/ Fe
Actual ore depositBe not less than Mn
Alloy/ Fe
AlloyThe time, continue to judge Mn
Actual ore deposit/ Fe
Whether actual ore depositEqual Mn
Alloy/ Fe
Alloy, work as Mn
Actual ore deposit/ Fe
Actual ore deposit=45/10=4.5=Mn
Alloy/ Fe
Alloy=4.5, need not add iron ore, directly smelt; Work as Mn
Actual ore deposit/ Fe
Actual ore deposit=48/6=8＞Mn
Alloy/ Fe
Alloy=4.5, need to add iron ore, the iron ore add-on is Y, Y=Mn
Actual ore depositFe
Alloy/ Mn
Alloy-Fe
Actual ore deposit=48 * 0.22-6=4.56kg, every batch mixing closes manganese ore need allocate the 4.56kg iron ore into.
Claims (1)
1. one kind is utilized 15m
3The method that large-scale preparatory refining device refines in the smelting, the low carbon ferromanganese alloy is prepared burden fast is characterized in that:
1.1 the refining furnace manganese ore amount of allocating into:
Detection manganese-silicon quality, manganese content, silicon content are counted G t, L%, a% respectively before the refining in advance, and preparatory refining back is detected the preparatory manganese-silicon silicon content that refines and counted b%; Mix the every 100kg of manganese ore and count 1 batch of material, mix the manganese ore manganese content and count Mn
The ore deposit%, iron-holder are Fe
The ore deposit%;
Every batch mixing closes the siliceous amount of participating in reduction reaction in the manganese-silicon that manganese ore allocates into and counts A kg, A=0.212 Mn
The ore deposit+ 0.237 Fe
The ore deposit
Every batch mixing closes the manganese-silicon quality of the preparatory refining that manganese ore allocates into and counts B kg, B=(28.2 Mn
The ore deposit+ 31.5 Fe
The ore deposit)/b;
Required mixing manganese ore charge number is counted N, N=100G * b/ (28.2 Mn
The ore deposit+ 31.5 Fe
The ore deposit);
1.2 the refining furnace iron ore amount of allocating into
Manganese content in the different varieties that will smelt, in the low carbon ferromanganese alloy, silicon content, carbon content are counted Mn respectively
In%, Si
In%, C
In%, actual measurement mixes manganese content, the iron-holder of manganese ore and counts Mn respectively
Actual ore deposit%, Fe
Actual ore deposit%, refining back manganese-silicon manganese content, iron-holder are counted Mn respectively in advance
In advance after the refining%, Fe
In advance after the refining%, every batch mixing close manganese ore and count Mn respectively through the quality of manganese element, ferro element in the entering manganese-silicon after preparatory refining and the refining
AlloyKg, Fe
AlloyKg, definition coefficient k, C, D, E;
k＝（1+2.93 a%）/(1+2.93 b%)；
Mn
In advance after the refining%=(L%+3.93 (a%-k * b%))/k;
Mn
Alloy=0.3 Mn
The ore deposit+ 1.33 A * Mn
In advance after the refining/ b, Fe
Alloy=0.95 Fe
The ore deposit+ 1.33 A * Fe
In advance after the refining/ b;
C=Mn
In advance after the refining/ b;
D=Fe
In advance after the refining/ b;
E={ 1-(Mn
In%+Si
In%+C
In%) }/Mn
In%;
Mn
Alloy/ Fe
Alloy=(0.315 C * E-0.315 D-0.95)/(0.282 D-0.282 C * E-0.3 E);
Calculate Mn
Actual ore deposit/ Fe
Actual ore depositValue, judge Mn
Actual ore deposit/ Fe
Actual ore depositWith Mn
Alloy/ Fe
AlloyMagnitude relationship;
Judge Mn
Actual ore deposit/ Fe
Whether actual ore depositLess than Mn
Alloy/ Fe
Alloy, when less than the time, change high-grade manganese ore, recomputate Mn
Alloy/ Fe
AlloyValue, judge Mn
Actual ore deposit/ Fe
Actual ore depositWith Mn
Alloy/ Fe
AlloyMagnitude relationship;
When being not less than, continue to judge Mn
Actual ore deposit/ Fe
Whether actual ore depositEqual Mn
Alloy/ Fe
Alloy, when equaling, do not add iron ore, directly smelt; Work as Mn
Actual ore deposit/ Fe
Actual ore deposit＞Mn
Alloy/ Fe
Alloy, adding iron ore, the iron ore amount of allocating into is Ykg, Y=Mn
Actual ore depositFe
Alloy/ Mn
Alloy-Fe
Actual ore deposit
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|---|---|---|---|
| CN201210313044.0A CN102796870B (en) | 2012-08-30 | 2012-08-30 | Method for quickly proportioning in process of smelting medium-low-carbon ferromanganese alloy by using 15m<3> large-scale pre-smelting device |
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|---|---|---|---|
| CN201210313044.0A CN102796870B (en) | 2012-08-30 | 2012-08-30 | Method for quickly proportioning in process of smelting medium-low-carbon ferromanganese alloy by using 15m<3> large-scale pre-smelting device |
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|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056051A (en) * | 1983-09-06 | 1985-04-01 | Japan Metals & Chem Co Ltd | Production of medium- and low-carbon ferromanganese |
| 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 |
| CN102168158A (en) * | 2011-03-27 | 2011-08-31 | 中信锦州金属股份有限公司 | Shaking ladle premelting process for producing medium and low carbon ferromanganese |
-
2012
- 2012-08-30 CN CN201210313044.0A patent/CN102796870B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056051A (en) * | 1983-09-06 | 1985-04-01 | Japan Metals & Chem Co Ltd | Production of medium- and low-carbon ferromanganese |
| 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 |
| CN102168158A (en) * | 2011-03-27 | 2011-08-31 | 中信锦州金属股份有限公司 | Shaking ladle premelting process for producing medium and low carbon ferromanganese |
Non-Patent Citations (2)
| Title |
|---|
| 陈佩仙等: "基于化学平衡和渣相图的中、低碳锰铁生产工艺物料平衡计算", 《铁合金》, no. 06, 30 June 2009 (2009-06-30) * |
| 高德云等: "利用云南锰矿资源生产中碳锰铁的工业化实践", 《云南冶金》, no. 03, 30 June 2006 (2006-06-30) * |
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| CN102796870B (en) | 2014-04-02 |
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