CN106480248B - A kind of method for operating blast furnace of dirt mud iron carbon ball as part furnace charge - Google Patents
A kind of method for operating blast furnace of dirt mud iron carbon ball as part furnace charge Download PDFInfo
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Abstract
The present invention discloses a kind of novel furnace charge i.e. method for operating blast furnace of the dirt mud iron carbon ball as part furnace charge, blast furnace operating production is carried out in this way, novel furnace charge dirt mud iron carbon ball can be rationally utilized in blast furnace production process, blast furnace is set to reach stable smooth operation, low consumption is long-lived, ironmaking production cost can be reduced again simultaneously, accomplishes that economy is smelted.
Description
Technical field
The invention belongs to ironmaking technology field in steel and iron industry, more particularly to a kind of iron carbon ball made of metallurgical dust sludge is made
For blast furnace part furnace charge, in conjunction with the operating method using blast furnace combining upper and lower means.
Background technology
In recent years, with economic swift and violent growth, industry-by-industry in this context, all obtains increasing at high speed, especially
It is iron and steel enterprise, production capacity has more in the past significantly to be discharged, and with the continuous expansion of yield, the secondary production other than main process
Object, such as dedusting ash, CDQ, slag and iron oxide red amount have larger rise more in the past therewith.And in these years, around these
Secondary product all goes into overdrive to conduct a research to this between enterprise, has developed more product, such as dirt mud iron carbon ball, freeze off knot
The furnace charge of the new models such as pelletizing, and on this basis, a series of more mature manufacturing technology is formd, but these products exist
Although it is upper more mature in manufacture, and have some successful exemplary applications, such as rotary hearth furnace production technology, shaft furnace process
Etc., but from application effect, also fail to the expected value for enough reaching enterprise to it.With between enterprise for cost control
More stringent, cost checks and rates index mostly important between becoming enterprise, and for metallurgical production process at this stage, from resource
Property, in economy and operability from the point of view of, blast furnace is remained and is not replaced as most important iron-smelting process, the whole world
80% or more molten iron is still to be obtained by blast furnace ironmaking, and blast furnace technology is still the highest ironmaking production technique of cost performance.
With the scarcity and the market factor of resources supplIes, how by product made of these steel plant's secondary products, such as dirt mud iron carbon ball
Etc. being successfully applied in blast furnace, the current intrinsic furnace charge in part is substituted, while reducing enterprise operation cost, and can be in factory
The utilization for solving steel plant's secondary product, is the matter of utmost importance that work at present faces.From domestic and international blast fumance technique,
According to own actual situation and resources supplIes, these enterprises all form the furnace charge matching structure with self-character, and herein
On the basis of, the method for operating blast furnace with self-character is formd, and all achieve good application effect.Rationally to utilize factory
Interior secondary resource and the furnace charge use scope and kind into stove are widened, each producer also makes various trials herein, carries out
The laboratory researches and pilot scale industrial practice of a series of these new model furnace charges for blast furnace, attempt search out these traditional burners
Methods and techniques of the material suitable for blast furnace operating, but due to by some technical limitations, there are many more values using upper for technique
The place that must be discussed, still more place are worth further investigation.
Maturation on the traditional blast furnace furnace charge sinter of comparison, pellet application technology, the furnace charge of these new models, such as dirt
How mud iron carbon ball finally receives rational application in blast furnace, is that metallargist has to one of the spine faced in reality
Hand problem.And domestic and foreign literature data is also all rarely reported this, even if a small amount of use for being mentioned to these furnace charges, such as dirt mud
The utilization of manufactured goods, it is also most of all to discuss the techniques such as rotary hearth furnace direct-reduction, or as pneumatic steelmaking coolant etc.
Mode is applied, and for being applied to blast furnace, from basic mechanism and laboratory research, does not have also and excessive is related to studying.Make
For the maximum country of Metallurgical industry secondary product yield, China is one of the country of relatively early concern dirt mud application, there are many institute
School and Corporation R ＆ D mechanism participate in the research and experiment work in this field, such as Anshan iron and steel plant group, University of Science ＆ Technology, Beijing, and successfully
The dirt mud product of multiple types is had developed, also by using laboratory or the small-scale test of semi-industrial, obtains dirt mud iron carbon
For ball as blast furnace burden, operating duty is different from the important conclusion that traditional furnace charge enters the operating concept of stove.Although enterprise simultaneously
By the way that dirt mud iron carbon ball etc. is successfully utilized on other technology modes, and some effects are obtained, but at the same time problem
Be it will be apparent that be exactly that energy consumption is excessively high, it is economically not cost-effective, and blast furnace as the highest production containers of using energy source it
One, using which type of means and measure, in conjunction with dirt mud iron carbon ball etc., at home and abroad large blast furnace obtains the most reasonably using,
It is one of the problem of metallargist pays close attention to the most now.
Dirt mud iron carbon ball as a kind of furnace charge being different from traditional furnace charge also gradually causes that this is paid close attention to and is ground both at home and abroad
Study carefully.It is more due to being restricted condition, although Chen Nitie carbon balls steel plant secondary product is made, it is most of all rest on how
In production and manufacture, and with applied to based on the technique other than blast furnace.There is not more mature dirt mud iron carbon ball in height yet at present
Use technology in stove.On the basis of existence conditions, fail to realize that dirt mud iron carbon ball utilizes technical important breakthrough.
Technical solution
The technical problem to be solved by the present invention is to use the needs of novel furnace charge development trend according to the following blast furnace, provide
A kind of novel furnace charge, that is, method for operating blast furnace of the dirt mud iron carbon ball as part furnace charge carries out blast furnace operating life in this way
Production can rationally utilize novel furnace charge dirt mud iron carbon ball in blast furnace production process, so that blast furnace is reached stable smooth operation, low consumption is long
Longevity, while ironmaking production cost can be reduced again, accomplish that economy is smelted.
A kind of method for operating blast furnace using dirt mud iron carbon ball as part furnace charge is realized by following technical solution
's：
1, a kind of method for operating blast furnace using dirt mud iron carbon ball as part furnace charge, it is characterised in that：Dirt mud iron carbon ball is made
For blast furnace part material, chute inclination angle on the basis of original BF Design, to A ° of extension；By dirt mud iron carbon ball separately as
A kind of furnace charge enters stove, and percent mass ratio is added and does not allow more than the 30% of quality of furnace charge percentage, feeding density charcoal amount is reduced
Percent mass ratio is the C that percent mass ratio is added in dirt mud iron carbon ball；And reducing lower part cupola well tuyere line product, air port area subtracts
PA linear corresponding relations are presented in the two between small scale and dirt mud iron carbon ball addition account for total quality of furnace charge percentage；Using stove
After the charging of liftout tank charging method, furnace throat edge is arranged into dirt mud iron carbon ball is about to using no bell swivel chute distributing mode
Place, rather than it is arranged into blast furnace center, while the cloth number of turns of the dirt mud iron carbon ball in furnace throat edge must not exceed 5 circles, furnace throat side
Cloth doses must not exceed the 1/3 of dirt mud iron carbon ball furnace entering volume at edge；While dirt mud iron carbon ball enters stove, adjustment lower part operation system
Degree increases the blow rate required, and it is the BW that percent mass ratio is added in dirt mud iron carbon ball to blast air quantity to increase ratio；Reduce breeze blowing
Amount, coal injection amount reduce the SC that percent mass ratio is added in ranging from dirt mud iron carbon ball；Increase oxygen content in air blast, oxygen content
Increase the CO that percent mass ratio is added in ranging from dirt mud iron carbon ball, increases hot blast temperature, hot blast temperature increase ranging from dirt mud
The ST of percent mass ratio is added in iron carbon ball, increases basicity of slag, and quality percentage is added in basicity increase ranging from dirt mud iron carbon ball
The AI of ratio.
Its chute inclination angle extension angle is carried out by following formula：A °=0.5 °+DICB × K1；Feeding density charcoal reduces quality hundred
Ratio is divided to be carried out by following formula：C=DICB × K2；Air port area reduces ratio to be carried out by following formula：PA=DICB × K3；
It blasts air quantity and increases ratio by the progress of following formula：BW=DICB × K4；Coal injection amount reduces ratio and is carried out by following formula：
SC=DICB × K5；Oxygen content increases ratio and is carried out by following formula：CO=DICB × K6；Hot blast temperature increases than pressing following public affairs
Formula carries out：ST=DICB × K7；Basicity of slag increases ratio to be carried out by following formula：AI=DICB × K8。
In formula：
DICB：Percent mass ratio, % is added in dirt mud iron carbon ball；A°：Chute inclination angle extension angle, °, K1Coefficient, value
Range 3~8；C：Feeding density charcoal reduces percent mass ratio, %, K2Coefficient, value range 0.2~0.4；PA：Air port area subtracts
Small scale, %, K3Coefficient, value range 0.1~0.3；BW：It blasts air quantity and increases ratio, %, K4Coefficient, value range 0.2~
0.4；SC：Coal injection amount reduces ratio, %, K5Coefficient, value range 0.2~0.4；CO：Oxygen content increases ratio, %, K6System
Number, value range 0.3~0.9；ST：Hot blast temperature increases ratio, %, K7Coefficient, value range 0.1~0.3；AI：Clinker alkali
Spend increase ratio, %, K7Coefficient, value range 0.05~0.2.
2, a kind of method for operating blast furnace using dirt mud iron carbon ball as part furnace charge, it is characterised in that：Dirt mud iron carbon ball is made
For blast furnace part material, chute inclination angle on the basis of original BF Design, to A ° of extension；It is loaded in mixture with stove smelter coke is entered,
When loading in mixture, 20% that percent mass ratio is no more than total furnace charge is added in dirt mud iron carbon ball；Feeding density charcoal amount reduces mass percent
Example is the C that percent mass ratio is added in dirt mud iron carbon ball；And lower part cupola well air port is reduced, air port area reduces ratio and dirt mud iron
PA linear corresponding relations are presented in the two between carbon ball addition accounts for total quality of furnace charge percentage；Using furnace roof batch can charging method
After charging, central coke stock column position, Er Feibu are arranged into dirt mud iron carbon ball is about to using no bell swivel chute distributing mode
It sets between furnace throat edge or furnace throat and central coke column；Ore must not surpass in the cloth number of turns of furnace throat edge everywhere simultaneously
Cross 3 circles；The 1/3 of ore furnace entering volume is must not exceed at the ore of furnace throat edge；While dirt mud iron carbon ball enters stove, lower part is adjusted
Operating duty increases the blow rate required, and it is the BW that percent mass ratio is added in dirt mud iron carbon ball to blast air quantity to increase ratio；Reduce coal dust
Injection amount, coal injection amount reduce the SC that percent mass ratio is added in ranging from dirt mud iron carbon ball；Increase oxygen content in air blast, contains
The CO of percent mass ratio is added in oxygen amount increase ranging from dirt mud iron carbon ball, increases hot blast temperature, hot blast temperature increase is ranging from
The ST of percent mass ratio is added in dirt mud iron carbon ball, increases basicity of slag, and quality is added in basicity increase ranging from dirt mud iron carbon ball
The AI of percentage.
Its chute inclination angle extension angle is carried out by following formula：A °=0.5 °+DICB × K1；Feeding density charcoal reduces quality hundred
Ratio is divided to be carried out by following formula：C=DICB × K2；Air port area reduces ratio to be carried out by following formula：PA=DICB × K3；
It blasts air quantity and increases ratio by the progress of following formula：BW=DICB × K4；Coal injection amount reduces ratio and is carried out by following formula：
SC=DICB × K5；Oxygen content increases ratio and is carried out by following formula：CO=DICB × 0.7K6；Hot blast temperature increases than by following
Formula carries out：ST=DICB × K7；Basicity of slag increases ratio to be carried out by following formula：AI=DICB × K8。
In formula：
DICB：Percent mass ratio, % is added in dirt mud iron carbon ball；A°：Chute inclination angle extension angle, °, K1Coefficient, value
Range 3~8；C：Feeding density charcoal reduces percent mass ratio, %, K2Coefficient, value range 0.1~0.3；PA：Air port area subtracts
Small scale, %, K3Coefficient, value range 0.1~0.3；BW：It blasts air quantity and increases ratio, %, K4Coefficient, value range 0.1~
0.3；SC：Coal injection amount reduces ratio, %, K5Coefficient, value range 0.2~0.4；CO：Oxygen content increases ratio, %, K6System
Number, value range 0.3~0.9；ST：Hot blast temperature increases ratio, %, K7Coefficient, value range 0.1~0.3；AI：Clinker alkali
Spend increase ratio, %, K7Coefficient, value range 0.05~0.2.
Wherein, TFe percentage compositions 5~80% in dirt mud iron carbon ball, carbon mass percentage 80~20%, other member quality
The sum of amount percentage composition is less than 30%；It is 8~50cm to enter stove granularity control range, and compression strength is hot swollen more than 1500N/
Swollen coefficient is less than 25%.
Wherein, chute inclination angle extends outwardly, and furnace throat edge is arranged into for ore, increases furnace throat edge ore and uses
Amount suitably aggravates edge, reduces dirt mud iron carbon ball and back edge Gas Flow scouring intensity is added.
Wherein, reduce cupola well air port area, for blowing central coke stock column living, increase hot wind penetrability in stove；Increase
Enter the stove blow rate required, with the gas permeability for improving the dead stock column of blast furnace, improves smooth operation of furnace state.
Wherein, due to factor carbon containing in dirt mud iron carbon ball, Blast Furnace Coal Powder Injection Amount is reduced, for reducing fuel ratio, is dropped
Low fuel consumption；Increase oxygen content in air blast, for improving coal dust firing situation, reduces fuel consumption, while reducing bosh coal
The generation of tolerance.
Wherein, increase hot blast temperature, for being added to stove heat, improve coal dust firing situation.
Wherein, cause sulfur content in furnace charge to increase since dirt mud iron carbon ball enters stove, increase basicity of slag, for improving blast furnace
Desulphurizing ability improves operating condition of blast furnace.
Blast furnace operating is carried out in this way, the novel furnace charge dirt mud iron carbon ball of utilization that can be relatively reasonable, while again may be used
To achieve the purpose that blast furnace stable smooth operation, low consumption are long-lived, wherein using after the method operating blast furnaces, blast furnace produces a ton iron combustion
Material consumption reduces by 3 kilograms or more, and ton iron production cost declines 5 yuan or more.
Specific implementation mode
Below by some embodiments, the present invention is further described.
It is illustrated with reference to specific embodiment：
1 embodiment, 1 (certain steel plant 1080m3Illustrate for blast furnace)
1.1 dirt mud iron carbon ball performances
Dirt mud iron carbon ball basis physicochemical property is shown in Table 1.
1 dirt mud iron carbon ball performance of table, %
It is a kind of using the carbon containing method for operating blast furnace as part furnace charge of hot consolidation, take dirt mud iron carbon ball individually to enter as one kind
The furnace charge of stove, without being loaded in mixture into stove with other type furnace charges, used dirt mud iron carbon ball basis physical and chemical performance analysis is shown in Table 1,
Carry out blast furnace process.
1.2 furnace charge collocation forms
The furnace charge collocation form of blast furnace feeding is shown in Table 2.
2 furnace charge collocation form of table, %
Depending on dirt mud iron carbon ball as a kind of independent furnace charge, chute inclination angle prolongs 2 ° to extending out, and dirt mud iron carbon ball is packed into and is expected
Storehouse is transported to furnace top material tank for blast furnace by main belt, by bellless distributor and swivel chute by the cloth system for inventing requirement
After degree is arranged into designated position, other furnace charges enter stove and enter stove according to specified charging system, carry out blast furnace process, wherein furnace charge is taken
It is determined with form according to stove quality of furnace charge percentage is entered, wherein sinter is 56.0%, pellet 12.0%, and lump ore is
4.0%, dirt mud iron carbon ball is 8.0%, and ordinary metallurgical coke is 20.0%.
The variation of 1.3 operating duties
The variation of blast furnace operating system is shown in Table 3.
3 operating duty of table changes
It is launched dirt mud iron carbon ball as a kind of independent furnace charge in blast furnace, enters stove smelter for the novel furnace charge of adaptation
Make, blast furnace operating system needs that respective change occurs, wherein on original blast furnace foundation, air port area reduces 0.01m2, air quantity
Increase 60m3/ min, oxygen enrichment percentage increase by 0.02%, coal ejection ratio reduction 4.0kg/t, 22 DEG C of wind-warm syndrome raising, basicity of slag accordingly carry
Height accordingly takes ballast marginal operation system, to adapt to new blast furnace operating system.
1.4 blast furnace implementation results
Blast furnace using dirt mud iron carbon ball as part furnace charge after, the metallurgical effect of blast furnace is shown in Table 4.
Effect after 4 blast furnace of table is implemented
After dirt mud iron carbon ball is as part blast furnace furnace charge, blast furnace process is carried out using the method, yield can be obtained
It improves, fuel ratio reduces, and gas utilization rate improves, and reaches blast furnace stable smooth operation, and final obtain reduces ironmaking production cost effectiveness
And purpose.
2 embodiment, 2 (certain steel plant 1080m3Illustrate for blast furnace)
2.1 dirt mud iron carbon ball performances
Dirt mud iron carbon ball basis physicochemical property is shown in Table 5.
5 dirt mud iron carbon ball performance of table, %
A kind of method for operating blast furnace using dirt mud iron carbon ball as part furnace charge takes dirt mud iron carbon ball to be loaded in mixture with coke
Mode enters stove, and used dirt mud iron carbon ball basis physical and chemical performance analysis is shown in Table 5, carries out blast furnace process.
2.2 furnace charge collocation forms
The furnace charge collocation form of blast furnace feeding is shown in Table 6.
6 furnace charge collocation form of table, %
Dirt mud iron carbon ball and coke are loaded in mixture into loading feed bin, chute inclination angle prolongs 4 ° to extending out, and height is transported to by main belt
Stove furnace roof batch can, after being arranged into designated position by the burden distribution system of invention requirement by bellless distributor and swivel chute,
Its furnace charge enters stove and enters stove according to specified charging system, carries out blast furnace process, wherein furnace charge collocation form is according to entering stove quality of furnace charge
Percentage determines that wherein sinter is 60.0%, pellet 10.0%, lump ore 0.0%, and dirt mud iron carbon ball is
10.0%, ordinary metallurgical coke is 20.0%.
The variation of 2.3 operating duties
The variation of blast furnace operating system is shown in Table 7.
7 operating duty of table changes
Dirt mud iron carbon ball and coke are loaded in mixture and launched in blast furnace, the stove that enters to adapt to novel furnace charge smelts work, blast furnace
Operating duty needs that respective change occurs, wherein on original blast furnace foundation, air port area reduces 0.01m2, air quantity increase 80m3/
Min, oxygen enrichment percentage increase by 0.01%, coal ejection ratio and reduce 6.0kg/t, 25 DEG C of hot blast temperature increase, and basicity of slag accordingly improves, accordingly
That takes increasing central coke grasps system, to adapt to new blast furnace operating system.
2.4 blast furnace implementation results
Blast furnace using dirt mud iron carbon ball as part furnace charge after, the metallurgical effect of blast furnace is shown in Table 8.
Effect after 8 blast furnace of table is implemented
After dirt mud iron carbon ball is as part blast furnace furnace charge, blast furnace process is carried out using the method, yield can be obtained
It improves, fuel ratio reduces, and gas utilization rate improves, and reaches blast furnace stable smooth operation, and final obtain reduces ironmaking production cost effectiveness
And purpose.
3 embodiment, 3 (certain steel plant 2600m3Illustrate for blast furnace)
3 dirt mud iron carbon ball performances
Dirt mud iron carbon ball basis physicochemical property is shown in Table 9.
9 dirt mud iron carbon ball performance of table, %
It is a kind of using the carbon containing method for operating blast furnace as part furnace charge of hot consolidation, take dirt mud iron carbon ball individually to enter as one kind
The furnace charge of stove, without being loaded in mixture into stove with other type furnace charges, used dirt mud iron carbon ball basis physical and chemical performance analysis is shown in Table 9,
Carry out blast furnace process.
3.2 furnace charge collocation forms
The furnace charge collocation form of blast furnace feeding is shown in Table 10.
10 furnace charge collocation form of table, %
Depending on dirt mud iron carbon ball as a kind of independent furnace charge, chute inclination angle prolongs 3 ° to extending out, and dirt mud iron carbon ball is packed into and is expected
Storehouse is transported to furnace top material tank for blast furnace by main belt, by bellless distributor and swivel chute by the cloth system for inventing requirement
After degree is arranged into designated position, other furnace charges enter stove and enter stove according to specified charging system, carry out blast furnace process, wherein furnace charge is taken
It is determined with form according to stove quality of furnace charge percentage is entered, wherein sinter is 50.0%, pellet 0.0%, and lump ore is
0.0%, dirt mud iron carbon ball is 30.0%, and ordinary metallurgical coke is 20.0%.
The variation of 3.3 operating duties
The variation of blast furnace operating system is shown in Table 11.
11 operating duty of table changes
It is launched dirt mud iron carbon ball as a kind of independent furnace charge in blast furnace, enters stove smelter for the novel furnace charge of adaptation
Make, blast furnace operating system needs that respective change occurs, wherein on original blast furnace foundation, air port area reduces 0.02m2, air quantity
Increase 150m3/ min, oxygen enrichment percentage increase by 0.11%, coal ejection ratio reduction 6.0kg/t, 25 DEG C of wind-warm syndrome raising, basicity of slag accordingly carry
Height accordingly takes ballast marginal operation system, to adapt to new blast furnace operating system.
3.4 blast furnace implementation results
Blast furnace using dirt mud iron carbon ball as part furnace charge after, the metallurgical effect of blast furnace is shown in Table 12.
Effect after 12 blast furnace of table is implemented
After dirt mud iron carbon ball is as part blast furnace furnace charge, blast furnace process is carried out using the method, yield can be obtained
It improves, fuel ratio reduces, and gas utilization rate improves, and reaches blast furnace stable smooth operation, and final obtain reduces ironmaking production cost effectiveness
And purpose.
4 embodiment, 4 (certain steel plant 2600m3Illustrate for blast furnace)
4.1 dirt mud iron carbon ball performances
Dirt mud iron carbon ball basis physicochemical property is shown in Table 13.
13 dirt mud iron carbon ball performance of table, %
A kind of method for operating blast furnace using dirt mud iron carbon ball as part furnace charge takes dirt mud iron carbon ball to be loaded in mixture with coke
Mode enters stove, and used dirt mud iron carbon ball basis physical and chemical performance analysis is shown in Table 13, carries out blast furnace process.
4.2 furnace charge collocation forms
The furnace charge collocation form that stove enters stove is shown in Table 14.
14 furnace charge collocation form of table, %
Dirt mud iron carbon ball and coke are loaded in mixture into loading feed bin, chute inclination angle prolongs 3 ° to extending out, and height is transported to by main belt
Stove furnace roof batch can, after being arranged into designated position by the burden distribution system of invention requirement by bellless distributor and swivel chute,
Its furnace charge enters stove and enters stove according to specified charging system, carries out blast furnace process, wherein furnace charge collocation form is according to entering stove quality of furnace charge
Percentage determines that wherein sinter is 56.0%, pellet 0.0%, lump ore 4.0%, and dirt mud iron carbon ball is 20.0%,
Ordinary metallurgical coke is 20.0%.
The variation of 4.3 operating duties
The variation of blast furnace operating system is shown in Table 15.
15 operating duty of table changes
Dirt mud iron carbon ball and coke are loaded in mixture and launched in blast furnace, the stove that enters to adapt to novel furnace charge smelts work, blast furnace
Operating duty needs that respective change occurs, wherein on original blast furnace foundation, air port area reduction 0.03m2, air quantity increase
120m3/ min, oxygen enrichment percentage increase by 0.10%, coal ejection ratio and reduce 8.0kg/t, 30 DEG C of hot blast temperature increase, and basicity of slag accordingly carries
Height, that accordingly takes increasing central coke grasps system, to adapt to new blast furnace operating system.
4.4 blast furnace implementation results
Blast furnace using dirt mud iron carbon ball as part furnace charge after, the metallurgical effect of blast furnace is shown in Table 16.
Effect after 16 blast furnace of table is implemented
After using dirt mud iron carbon ball as part blast furnace furnace charge, blast furnace process is carried out using the method, production can be obtained
Amount improves, and fuel ratio reduces, and gas utilization rate improves, and reaches blast furnace stable smooth operation, and final obtain reduces ironmaking production cost
Purpose.
5 embodiment, 5 (certain steel plant 3800m3Illustrate for blast furnace)
5.1 dirt mud iron carbon ball performances
Dirt mud iron carbon ball basis physicochemical property is shown in Table 17.
17 dirt mud iron carbon ball performance of table, %
It is a kind of using the carbon containing method for operating blast furnace as part furnace charge of hot consolidation, take dirt mud iron carbon ball individually to enter as one kind
The furnace charge of stove, without being loaded in mixture into stove with other type furnace charges, used dirt mud iron carbon ball basis physical and chemical performance analysis is shown in Table 17,
Carry out blast furnace process.
5.2 furnace charge collocation forms
The furnace charge collocation form of blast furnace feeding is shown in Table 18.
18 furnace charge collocation form of table, %
Depending on dirt mud iron carbon ball as a kind of independent furnace charge, chute inclination angle prolongs 4 ° to extending out, and dirt mud iron carbon ball is packed into and is expected
Storehouse is transported to furnace top material tank for blast furnace by main belt, by bellless distributor and swivel chute by the cloth system for inventing requirement
After degree is arranged into designated position, other furnace charges enter stove and enter stove according to specified charging system, carry out blast furnace process, wherein furnace charge is taken
It is determined with form according to stove quality of furnace charge percentage is entered, wherein sinter is 45.0%, pellet 10.0%, and lump ore is
5.0%, dirt mud iron carbon ball is 20.0%, and ordinary metallurgical coke is 20.0%.
The variation of 5.3 operating duties
The variation of blast furnace operating system is shown in Table 19.
19 operating duty of table changes
It is launched dirt mud iron carbon ball as a kind of independent furnace charge in blast furnace, enters stove smelter for the novel furnace charge of adaptation
To make, blast furnace operating system needs that respective change occurs, wherein on original blast furnace foundation, air port area reduction 0.02m2, air quantity
Increase 130m3/ min, oxygen enrichment percentage increase by 0.12%, coal ejection ratio reduction 6.0kg/t, 20 DEG C of wind-warm syndrome raising, basicity of slag accordingly carry
Height accordingly takes ballast marginal operation system, to adapt to new blast furnace operating system.
5.4 blast furnace implementation results
Blast furnace using dirt mud iron carbon ball as part furnace charge after, the metallurgical effect of blast furnace is shown in Table 20.
Effect after 20 blast furnace of table is implemented
After using dirt mud iron carbon ball as part blast furnace furnace charge, blast furnace process is carried out using the method, production can be obtained
Amount improves, and fuel ratio reduces, and gas utilization rate improves, and reaches blast furnace stable smooth operation, and final obtain reduces ironmaking production cost
Purpose.
6 embodiment, 6 (certain steel plant 3800m3Illustrate for blast furnace)
Dirt mud iron carbon ball basis physicochemical property is shown in Table 21.
21 dirt mud iron carbon ball performance of table, %
A kind of method for operating blast furnace using dirt mud iron carbon ball as part furnace charge takes dirt mud iron carbon ball to be loaded in mixture with coke
Mode enters stove, and used dirt mud iron carbon ball basis physical and chemical performance analysis is shown in Table 21, carries out blast furnace process.
6.2 furnace charge collocation forms
The furnace charge collocation form that stove enters stove is shown in Table 22.
22 furnace charge collocation form of table, %
Dirt mud iron carbon ball and coke are loaded in mixture into loading feed bin, chute inclination angle prolongs 2.5 ° to extending out, and is transported to by main belt
Furnace top material tank for blast furnace, after being arranged into designated position by the burden distribution system of invention requirement by bellless distributor and swivel chute,
Other furnace charges enter stove and enter stove according to specified charging system, carry out blast furnace process, wherein furnace charge collocation form is according to entering stove furnace charge matter
Percentage is measured to determine, wherein sinter is 60.0%, pellet 5.0%, lump ore 0.0%, and dirt mud iron carbon ball is
10.0%, ordinary metallurgical coke is 20.0%.
The variation of 6.3 operating duties
The variation of blast furnace operating system is shown in Table 23.
23 operating duty of table changes
Dirt mud iron carbon ball and coke are loaded in mixture and launched in blast furnace, the stove that enters to adapt to novel furnace charge smelts work, blast furnace
Operating duty needs that respective change occurs, wherein on original blast furnace foundation, air port area reduces 0.03m2, air quantity increase
200m3/ min, oxygen enrichment percentage increase by 0.10%, coal ejection ratio and reduce 7.0kg/t, 30 DEG C of hot blast temperature increase, and basicity of slag accordingly carries
Height, that accordingly takes increasing central coke grasps system, to adapt to new blast furnace operating system.
6.4 blast furnace implementation results
Blast furnace using dirt mud iron carbon ball as part furnace charge after, the metallurgical effect of blast furnace is shown in Table 24.
Effect after 24 blast furnace of table is implemented
After using dirt mud iron carbon ball as part blast furnace furnace charge, blast furnace process is carried out using the method, production can be obtained
Amount improves, and fuel ratio reduces, and gas utilization rate improves, and reaches blast furnace stable smooth operation, and final obtain reduces ironmaking production cost
Purpose.
Claims (2)
1. a kind of method for operating blast furnace of dirt mud iron carbon ball as part furnace charge, it is characterised in that：Dirt mud iron carbon ball is as blast furnace
With part material, chute inclination angle on the basis of original BF Design, to A ° of extension；By dirt mud iron carbon ball separately as a kind of stove
Expect, into stove, percent mass ratio to be added and does not allow more than the 30% of quality of furnace charge percentage, feeding density charcoal amount reduces quality hundred
It is the C that percent mass ratio is added in dirt mud iron carbon ball to divide ratio；And reducing lower part cupola well tuyere line product, air port area reduces ratio
PA linear corresponding relations are presented in the two between accounting for total quality of furnace charge percentage with dirt mud iron carbon ball addition；Using furnace roof batch can
After charging method charging, furnace throat edge is arranged into dirt mud iron carbon ball is about to using no bell swivel chute distributing mode, together
When the cloth number of turns of the dirt mud iron carbon ball in furnace throat edge must not exceed 5 circles, furnace throat edge cloth doses must not exceed dirt mud iron
The 1/3 of carbon ball furnace entering volume；While dirt mud iron carbon ball enters stove, lower part operating duty is adjusted, increases the blow rate required, blasts air quantity increasing
It is the BW that percent mass ratio is added in dirt mud iron carbon ball to add ratio；Coal powder blowing amount is reduced, coal injection amount reduces ranging from dirt
The SC of percent mass ratio is added in mud iron carbon ball；Increase oxygen content in air blast, oxygen content increase ranging from dirt mud iron carbon ball is added
The CO of percent mass ratio, increases hot blast temperature, and percent mass ratio is added in hot blast temperature increase ranging from dirt mud iron carbon ball
ST, increases basicity of slag, and the AI of percent mass ratio is added in basicity increase ranging from dirt mud iron carbon ball；
Its chute inclination angle extension angle is carried out by following formula：A °=0.5 °+DICB × K1；Feeding density charcoal reduces mass percent
Example is carried out by following formula：C=DICB × K2；Air port area reduces ratio to be carried out by following formula：PA=DICB × K3；It blasts
Air quantity increases ratio to be carried out by following formula：BW=DICB × K4；Coal injection amount reduces ratio and is carried out by following formula：SC=
DICB×K5；Oxygen content increases ratio and is carried out by following formula：CO=DICB × K6；Hot blast temperature increase than press following formula into
Row：ST=DICB × K7；Basicity of slag increases ratio to be carried out by following formula：AI=DICB × K8；
In formula：
DICB：Percent mass ratio, % is added in dirt mud iron carbon ball；A°：Chute inclination angle extension angle, °, K1Coefficient, value range 3
~8；C：Feeding density charcoal reduces percent mass ratio, %, K2Coefficient, value range 0.2~0.4；PA：Air port area reduces ratio
Example, %, K3Coefficient, value range 0.1~0.3；BW：It blasts air quantity and increases ratio, %, K4Coefficient, value range 0.2~0.4；
SC：Coal injection amount reduces ratio, %, K5Coefficient, value range 0.2~0.4；CO：Oxygen content increases ratio, %, K6Coefficient,
Value range 0.3~0.9；ST：Hot blast temperature increases ratio, %, K7Coefficient, value range 0.1~0.3；AI：Basicity of slag increases
Add ratio, %, K8Coefficient, value range 0.05~0.2.
2. a kind of method for operating blast furnace of dirt mud iron carbon ball as part furnace charge, it is characterised in that：Dirt mud iron carbon ball is as blast furnace
With part material, chute inclination angle on the basis of original BF Design, to A ° of extension；It is loaded in mixture with stove smelter coke is entered, when loading in mixture,
20% that percent mass ratio is no more than total furnace charge is added in dirt mud iron carbon ball；It is dirt mud that feeding density charcoal amount, which reduces percent mass ratio,
The C of percent mass ratio is added in iron carbon ball；And lower part cupola well air port is reduced, air port area reduces ratio and is added with dirt mud iron carbon ball
PA linear corresponding relations are presented in the two between amount accounts for total quality of furnace charge percentage；After being fed using furnace roof batch can charging method,
Central coke stock column position is arranged into dirt mud iron carbon ball is about to using no bell swivel chute distributing mode, while ore is in furnace throat
The cloth number of turns of edge everywhere must not exceed 3 circles；The 1/3 of ore furnace entering volume is must not exceed at the ore of furnace throat edge；In dirt mud
While iron carbon ball enters stove, lower part operating duty is adjusted, increases the blow rate required, air quantity is blasted and increases ratio as the addition of dirt mud iron carbon ball
The BW of percent mass ratio；Coal powder blowing amount is reduced, coal injection amount reduces ranging from dirt mud iron carbon ball and mass percent is added
The SC of example；Increase oxygen content in air blast, oxygen content increase ranging from dirt mud iron carbon ball is added the CO of percent mass ratio, increases heat
The ST of percent mass ratio is added in air temperature, hot blast temperature increase ranging from dirt mud iron carbon ball, increases basicity of slag, and basicity increases
Ranging from the AI of percent mass ratio is added in dirt mud iron carbon ball；
Its chute inclination angle extension angle is carried out by following formula：A °=0.5 °+DICB × K1；Feeding density charcoal reduces mass percent
Example is carried out by following formula：C=DICB × K2；Air port area reduces ratio to be carried out by following formula：PA=DICB × K3；It blasts
Air quantity increases ratio to be carried out by following formula：BW=DICB × K4；Coal injection amount reduces ratio and is carried out by following formula：SC=
DICB×K5；Oxygen content increases ratio and is carried out by following formula：CO=DICB × 0.7K6；Hot blast temperature increases than pressing following formula
It carries out：ST=DICB × K7；Basicity of slag increases ratio to be carried out by following formula：AI=DICB × K8；
In formula：
DICB：Percent mass ratio, % is added in dirt mud iron carbon ball；A°：Chute inclination angle extension angle, °, K1Coefficient, value range 3
~8；C：Feeding density charcoal reduces percent mass ratio, %, K2Coefficient, value range 0.1~0.3；PA：Air port area reduces ratio
Example, %, K3Coefficient, value range 0.1~0.3；BW：It blasts air quantity and increases ratio, %, K4Coefficient, value range 0.1~0.3；
SC：Coal injection amount reduces ratio, %, K5Coefficient, value range 0.2~0.4；CO：Oxygen content increases ratio, %, K6Coefficient,
Value range 0.3~0.9；ST：Hot blast temperature increases ratio, %, K7Coefficient, value range 0.1~0.3；AI：Basicity of slag increases
Add ratio, %, K8Coefficient, value range 0.05~0.2.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102230040A (en) * | 2011-06-17 | 2011-11-02 | 中冶京诚工程技术有限公司 | Ironmaking method |
| CN102703626A (en) * | 2012-06-16 | 2012-10-03 | 冶金自动化研究设计院 | Intelligent optimal control system for CO2 emission of blast furnace |
| CN102816880A (en) * | 2012-08-17 | 2012-12-12 | 东北大学 | Ironmaking and aluminum extraction comprehensive utilization method of high-iron red mud |
| CN103092087A (en) * | 2011-11-02 | 2013-05-08 | 上海宝信软件股份有限公司 | Blast furnace batching optimization method based on linear programming |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102230040A (en) * | 2011-06-17 | 2011-11-02 | 中冶京诚工程技术有限公司 | Ironmaking method |
| CN103092087A (en) * | 2011-11-02 | 2013-05-08 | 上海宝信软件股份有限公司 | Blast furnace batching optimization method based on linear programming |
| CN102703626A (en) * | 2012-06-16 | 2012-10-03 | 冶金自动化研究设计院 | Intelligent optimal control system for CO2 emission of blast furnace |
| CN102816880A (en) * | 2012-08-17 | 2012-12-12 | 东北大学 | Ironmaking and aluminum extraction comprehensive utilization method of high-iron red mud |
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