CN104419793B - A kind of blast furnace protecting vanadium ferrotianium Jiao and its making and use method - Google Patents
A kind of blast furnace protecting vanadium ferrotianium Jiao and its making and use method Download PDFInfo
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- CN104419793B CN104419793B CN201310399045.6A CN201310399045A CN104419793B CN 104419793 B CN104419793 B CN 104419793B CN 201310399045 A CN201310399045 A CN 201310399045A CN 104419793 B CN104419793 B CN 104419793B
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- vanadium
- blast furnace
- coke
- ball
- ferrotianium
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- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 61
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium(0) Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 61
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000000571 coke Substances 0.000 claims abstract description 82
- 229910052742 iron Inorganic materials 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 27
- -1 vanadium titanium Chemical compound 0.000 claims abstract description 26
- 239000002817 coal dust Substances 0.000 claims abstract description 24
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive Effects 0.000 claims abstract description 14
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- 238000004939 coking Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000003245 coal Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 4
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000008188 pellet Substances 0.000 abstract description 35
- 239000000203 mixture Substances 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005245 sintering Methods 0.000 abstract description 8
- 230000029087 digestion Effects 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 19
- 239000010936 titanium Substances 0.000 description 18
- 229910052719 titanium Inorganic materials 0.000 description 14
- 239000002994 raw material Substances 0.000 description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 13
- 238000005453 pelletization Methods 0.000 description 8
- 238000007792 addition Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910000628 Ferrovanadium Inorganic materials 0.000 description 6
- 235000012970 cakes Nutrition 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 210000003491 Skin Anatomy 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000003223 protective agent Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000011068 load Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241001417490 Sillaginidae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention discloses a kind of blast furnace protecting vanadium ferrotianium Jiao and its making and use method, it is by the material containing vanadium titanium composition and coal dust and separately adds adhesive to combine, by mass percentage, wherein vanadium titanium material 10%～40%, the adhesive of coal dust 60%～90%, another plus vanadium titanium material and coal dust total amount 5%～20%.Above-mentioned vanadium titanium material, coal dust, adhesive are put in intensive mixer in proportion using molded to roll-in ball machine and obtain the compound green-ball of iron coke, then iron coke compound green-ball is put into into coking in coke oven, finally give high intensity vanadium ferrotianium burnt.Vanadium ferrotianium Jiao is mixed with sintering deposit, pellet, miscellaneous ore deposit and is thrown in blast furnace；Or mix with coke and throw in blast furnace, form coke layer and ore bed.Advantages of the present invention and effect are that it is possible to the superiority for playing vanadium titanium material furnace retaining to greatest extent, reach the good result of furnace retaining, while and can impact of the reduction to smooth operation of furnace, be conducive to the strengthening digestion of blast furnace.
Description
Technical field
The invention belongs to coking and ironmaking technology field in steel and iron industry, more particularly to a kind of using containing vanadium titanium composition
Material and coal dust production blast furnace protecting iron coke and its making and use method.
Background technology
As blast furnace maximization and the increase of rate of driving, the maintenance of body of heater are increasingly taken seriously, extend blast furnace and use
Life-span also just becomes one of major subjects of domestic and international ironmaking worker research.At present, both at home and abroad in order to extend the use of blast furnace
In the life-span, take a series of Advanced Equipment and long-lived measure, such as take the positions such as shaft, cupola well install thin-walled copper cooling wall,
The compound carbon brick of furnace bottom and cupola well adds ceramics to build by laying bricks or stones, all achieves certain actual effect.In addition, changing except making in Proper Design
Beyond entering, exactly take additional material to carry out furnace retaining, instantly, generally acknowledge that one of relatively effective means are exactly schreyerite both at home and abroad
Furnace retaining, will contain TiO2Furnace charge add blast furnace after, formed Ti（C, N）And be dissolved in molten iron, when molten iron is in cupola well bottom
During low-temperature space, Ti（C, N）Form with solid solution is separated out, and deposits with the process of tapping a blast furnace of slagging tap, and then play protection
The effect of cupola well and furnace bottom.But this also brings another difficult problem to enterprise therewith, be how reasonably will containing vanadium titanium into
The material for dividing is rendered in blast furnace, makes up to the purpose of furnace retaining.Both at home and abroad, it is directed to the material containing vanadium titanium composition and enters stove and opens
A certain degree of research is opened up, more ripe method has：By the sintering deposit containing vanadium titanium composition, vanadium-titanium pellet and other enter
Stove raw material mixes, and is added in blast furnace together；Or take tuyere feeding, the stemming containing vanadium titanium composition, vanadium ilmenite concentrate powder
With means such as coal dust penetratings, using vanadium titanium material therein, the purpose of furnace retaining is reached.Although these measures are taken to a certain extent
The effect of furnace retaining was obtained, but also all be there are problems that, and or affecting the stable smooth operation production of blast furnace, or be only capable of playing office
Portion's action of protecting furnace, in a word, has the limitation which is certain.
Have in the furnace retaining method applied：The pelletizing and sintering deposit of the composition of titanium containing vanadium, is made using pellet and sintering deposit
For carrier, the material containing vanadium titanium composition is rendered in blast furnace,（See Chinese patent " high-titanium protection stove pellet ore and its preparation
Method " number of patent application CN101343674, a kind of " titanium ore cold briquetting for protecting blast furnace and its production method " number of patent application
CN1766129, " a kind of method that application low titanium pelletizing carries out blast furnace protecting fettling " number of patent application CN1621535, a kind of " shield
Stove oxide pellet and its production technology " number of patent application CN1557976, " high Ti cold curing pellet " number of patent application
CN1091778 etc.）, such method to a certain degree plays protection cupola well, furnace bottom effect, and more gives birth to for actual blast furnace
Produce, though obtaining better effects, there is also its intrinsic defect, be exactly as a kind of feed stock for blast furnace, more common pellet and burning
Knot ore deposit viscosity is big, affects the direct motion of blast furnace burden.With vanadium ilmenite concentrate powder is added in pulverized coal injection in blast furnace, by the use of coal dust as load
Body, the fine ore containing vanadium titanium composition is rendered in blast furnace.（See that " pulverized coal injection is blown Chinese patent with addition of schreyerite powder
The method of furnace retaining " number of patent application CN102115798A, a kind of " side that blast furnace protecting agent titanium fine powder is entered stove by injection system
Method " number of patent application CN102839241A etc.）, this measure also can play action of protecting furnace to a certain extent, but as which passes through coal
Rifle, sprays into from air port, it is contemplated that coal dust sprays into the quality of the combustibility in blast furnace, and its amount of allocating will be subject to certain restrictions,
In addition which can rise with Gas Flow, and active ingredient is difficult to reach furnace bottom, causes and is subject to certain restrictions in its application amount, furnace retaining
Effect is slightly worse.Coke for furnace protection, by the use of coke as carrier, the material of the composition of titanium containing vanadium is rendered in blast furnace.（See China
Patent " a kind of coke for furnace protection and its production method ", number of patent application CN101787294A, " a kind of coke for furnace protection and its system
Preparation Method " number of patent application CN101613616, " improving the additive and method of coke quality " number of patent application
CN101787295A etc.）, such method also to a certain extent play protection cupola well, furnace bottom effect, or but this kind of invention be
Furnace retaining effect is obtained to sacrifice the quality of coke, or in order to maintain coke quality, the vanadium titanium amount of substance allocated into is on the low side, furnace retaining
Effect is poor.In addition, also some other furnace retaining methods, such as titanium carbonitride blast furnace protecting agent,（See a kind of Chinese patent " carbon
Titanium nitride blast furnace protecting agent and preparation method thereof " number of patent application CN101798234）, protected using the method for blast furnace line feeding
Stove,（See Chinese patent " method of on-line thread feeding and furnace protecting of ironmaking blast furnace and Yarn feeding device " number of patent application CN101109024）, or
Using the method for stemming furnace retaining（See a kind of Chinese patent " low-cost environmental-protection furnace stemming " number of patent application CN102503493A,
" a kind of low-cost environmental-protection furnace stemming " number of patent application CN102433405A etc.）, and these method furnace retainings are adopted, or being shadow
The stable smooth operation production of blast furnace is rung, is besides only capable of playing local action of protecting furnace, or furnace retaining high expensive.
The content of the invention
It is an object of the present invention to according to the long-lived needs of blast furnace crucibe and furnace bottom, propose a kind of containing vanadium titanium composition
Iron coke and its making and use method, carry out blast furnace protecting in this way, are possible to play vanadium titanium material shield to greatest extent
The superiority of stove, reaches the good result of furnace retaining, while and can reduce the impact to smooth operation of furnace.Be conducive to the reinforcing of blast furnace
Production.
The present invention's is achieved in that
A kind of blast furnace protecting is burnt with vanadium ferrotianium, is to carry out proportioning by a certain percentage by the material containing vanadium titanium composition and coal dust
And plus adhesive combine, by mass percentage, wherein vanadium titanium material 10%～40%, coal dust 60%～90%, separately plus vanadium titanium thing
The adhesive of material and coal dust total amount 5%～20%.
Vanadium titanium material of the present invention is containing TiO2Content range, by mass percentage 12%～28% different grades
One or more of vanadium ilmenite concentrate powder.
Coal dust of the present invention is one or more of the weakly caking coal dust such as 1/3 coking coal, bottle coal, lean coal, meager lean coal, granularity
<5mm accounts for more than 70%.
Adhesive of the present invention is tar slag, one kind of pitch or two kinds.
The preparation method of iron coke of the present invention is：Above-mentioned vanadium titanium material, coal dust, adhesive are put into into intensive mixer in proportion
5～50min of interior mixing, then using molded to roll-in ball machine and obtain a diameter of 20～40mm under 10～50Mpa pressure
Intensity is not less than the compound green-ball of iron coke of 30N/ balls, then iron coke compound green-ball is put into coking in coke oven, adopts between green-ball
Coke powder is filled, and is kept for 1～3 hour, finally give high intensity after the compound green-ball central temperature of iron coke is heated to 900～1100 DEG C
Vanadium ferrotianium is burnt.
A kind of blast furnace protecting burnt using method of vanadium ferrotianium：
Vanadium ferrotianium burnt and feed stock for blast furnace, the such as mixing such as sintering deposit, pellet, miscellaneous ore deposit are thrown in blast furnace；Or with enter stove
The mixing such as fuel, such as coke is thrown in blast furnace, forms the coke layer and ore bed being adapted to, and finally smelts what titaniferous scope was adapted to
Molten iron.
When vanadium ferrotianium Jiao is mixed with feed stock for blast furnace to throw in blast furnace, the burnt proportioning of its vanadium ferrotianium is batch ore deposit weight
0.1%～4%.
When vanadium ferrotianium it is burnt with enter stove fuel mix throw in blast furnace when, the proportioning of its vanadium ferrotianium Jiao is the 2% of coke charge weight
～10%.
The of the present invention coke layer being adapted to and ore bed, ore layer and coke layer are alternatively formed.
The molten iron that titaniferous scope of the present invention is adapted to, the scope containing Ti in its molten iron, by mass percentage for 0.1%～
0.15%。
Advantages of the present invention and effect are to carry out blast furnace protecting according to the present invention, be possible to play vanadium to greatest extent
The superiority of titanium material furnace retaining, reaches the good result of furnace retaining, while and can impact of the reduction to smooth operation of furnace, be conducive to
The strengthening digestion of blast furnace.
Specific embodiment
The present invention is described in detail with reference to specific embodiment：
Embodiment 1
1.1 vanadium ferrotianium Jiao's raw material composition and quality proportioning
1 vanadium ferrotianium of table Jiao's raw material composition and quality proportioning/%
By mass percentage, ferrovanadium titanium material will be contained for 10%, coal dust is 90% proportions, and with addition of adhesive to total
The 5% of amount, three is put in intensive mixer and mixes 5min, then under the pressure of 15Mpa using being pressed into roll-in ball machine
Type, and a diameter of 20mm is obtained, intensity is not less than the iron coke composite pellet green-ball of 70N/ balls, and the green-ball for pressing is loaded coke oven
In, filled using coke powder between green-ball, prevent from mutually boning between iron coke composite pellet, when Center Temperature of Coke Cake is heated to
After being kept for 1 hour after 1100 DEG C, finally obtain with high reactivity and high strength iron coke composite pellet.
1.2 vanadium ferrotianiums Jiao's performance
2 vanadium ferrotianium of table Jiao's performance
| Project | Compression strength of green pel let/N | Pelletizing crushing strength/N | Balling ratio/% | CRI | CSR |
| Embodiment 1 | 115.4 | 3650.0 | 80.0 | 49.7 | 52.0 |
1.3 vanadium ferrotianiums Jiao's using method
3 vanadium ferrotianium of table is burnt（Add together with batch ore deposit）Scheme/%
Finished product iron coke is loaded in independent ore deposit groove, according to sintering deposit, pellet, miscellaneous ore deposit and iron coke 75.0：20.0：4.0：
1.0 ratio is rendered on the belt of ore deposit groove bottom, after being weighed by belt scale, is transported in charging of blast furnace tank,
Finally render in blast furnace.
Embodiment 2
2.1 vanadium ferrotianiums Jiao's raw material composition and quality proportioning
4 vanadium ferrotianium of table Jiao's raw material composition and quality proportioning/%
It is 20% that ferrovanadium titanium material will be contained, and coal dust is 80% proportions, and with addition of the 10% of adhesive ad pond om, will
Three is put into mixing 15min in intensive mixer, then under the pressure of 20Mpa using molded to roll-in ball machine, and obtains
A diameter of 25mm, intensity are not less than the iron coke composite pellet green-ball of 90N/ balls, by the green-ball for pressing load coke oven in, green-ball it
Between using coke powder fill, prevent from mutually boning between iron coke composite pellet, keep 3 after Center Temperature of Coke Cake is heated to 1000 DEG C
After hour, finally obtain with high reactivity and high strength iron coke composite pellet.
2.2 vanadium ferrotianiums Jiao's performance
5 vanadium ferrotianium of table Jiao's performance
| Project | Compression strength of green pel let/N | Pelletizing crushing strength/N | Balling ratio/% | CRI | CSR |
| Embodiment 2 | 140.3 | 4700.0 | 85.0 | 52.4 | 51.7 |
2.3 vanadium ferrotianiums Jiao's using method
6 vanadium ferrotianium of table is burnt（Add together with batch ore deposit）Scheme/%
Finished product iron coke is loaded in independent ore deposit groove, according to sintering deposit, pellet, miscellaneous ore deposit and iron coke 70.0：20.0：8.0：
2.0 ratio is rendered on the belt of ore deposit groove bottom, after being weighed by belt scale, is transported in charging of blast furnace tank,
Finally render in blast furnace.
Embodiment 3
3.1 vanadium ferrotianiums Jiao's raw material composition and quality proportioning
7 vanadium ferrotianium of table Jiao's raw material composition and quality proportioning/%
It is 30% that ferrovanadium titanium material will be contained, and coal dust is 70% proportions, and with addition of the 15% of adhesive ad pond om, will
Three is put into mixing 25min in intensive mixer, then under the pressure of 25Mpa using molded to roll-in ball machine, and obtains
A diameter of 30mm, intensity are not less than the iron coke composite pellet green-ball of 100N/ balls, and the green-ball for pressing is loaded in coke oven, in green-ball
Between using coke powder fill, prevent from mutually boning between iron coke composite pellet, after Center Temperature of Coke Cake is heated to 1100 DEG C protect
After holding 2 hours, finally obtain with high reactivity and high strength iron coke composite pellet.
3.2 vanadium ferrotianium Jiao's performance
8 vanadium ferrotianium of table Jiao's performance
| Project | Compression strength of green pel let/N | Pelletizing crushing strength/N | Balling ratio/% | CRI | CSR |
| Embodiment 3 | 147.9 | 5530.0 | 88.0 | 56.3 | 53.4 |
3.3 vanadium ferrotianiums Jiao's using method
9 vanadium ferrotianium of table is burnt（Add together with batch ore deposit）Scheme/%
Finished product iron coke is loaded in independent ore deposit groove, according to sintering deposit, pellet, miscellaneous ore deposit and iron coke 76.0：18.0：4.5：
1.5 ratio is rendered on the belt of ore deposit groove bottom, after being weighed by belt scale, is transported in charging of blast furnace tank,
Finally render in blast furnace.
Embodiment 4
4.1 vanadium ferrotianiums Jiao's raw material composition and quality proportioning
10 vanadium ferrotianium of table Jiao's raw material composition and quality proportioning/%
It is 40% that ferrovanadium titanium material will be contained, and coal dust is 60% proportions, and with addition of the 20% of adhesive ad pond om, will
Three is put into mixing 30min in intensive mixer, then under the pressure of 35Mpa using molded to roll-in ball machine, and obtains
A diameter of 30mm, intensity are not less than the iron coke composite pellet green-ball of 120N/ balls, and the green-ball for pressing is loaded in coke oven, in green-ball
Between using coke powder fill, prevent from mutually boning between iron coke composite pellet, after Center Temperature of Coke Cake is heated to 1050 DEG C protect
After holding 2 hours, finally obtain with high reactivity and high strength iron coke composite pellet.
4.2 vanadium ferrotianiums Jiao's performance
11 vanadium ferrotianium of table Jiao's performance
| Project | Compression strength of green pel let/N | Pelletizing crushing strength/N | Balling ratio/% | CRI | CSR |
| Embodiment 4 | 167.4 | 6020.0 | 90.0 | 58.5 | 55.4 |
4.3 vanadium ferrotianiums Jiao's using method
12 vanadium ferrotianium of table is burnt（Add together with coke charge）Scheme/%
Finished product iron coke is loaded in independent ore deposit groove, according to, and iron coke 98.0：2.0 ratio renders to the skin of burnt groove bottom
Take, after being weighed by belt scale, be transported in charging of blast furnace tank, finally render in blast furnace.
Embodiment 5
5.1 vanadium ferrotianiums Jiao's raw material composition and quality proportioning
13 vanadium ferrotianium of table Jiao's raw material composition and quality proportioning/%
It is 40% that ferrovanadium titanium material will be contained, and coal dust is 60% proportions, and with addition of the 20% of adhesive ad pond om, will
Three is put into mixing 40min in intensive mixer, then under the pressure of 45Mpa using molded to roll-in ball machine, and obtains
A diameter of 35mm, intensity are not less than the iron coke composite pellet green-ball of 150N/ balls, and the green-ball for pressing is loaded in coke oven, in green-ball
Between using coke powder fill, prevent from mutually boning between iron coke composite pellet, after Center Temperature of Coke Cake is heated to 1100 DEG C protect
After holding 2 hours, finally obtain with high reactivity and high strength iron coke composite pellet.
5.2 vanadium ferrotianiums Jiao's performance
14 vanadium ferrotianium of table Jiao's performance
| Project | Compression strength of green pel let/N | Pelletizing crushing strength/N | Balling ratio/% | CRI | CSR |
| Embodiment 5 | 173.6 | 6130.0 | 92.0 | 61.5 | 56.7 |
5.3 vanadium ferrotianiums Jiao's using method
15 vanadium ferrotianium of table is burnt（Add together with coke charge）Scheme/%
Finished product iron coke is loaded in independent ore deposit groove, according to, and iron coke 95.0：5.0 ratio renders to the skin of burnt groove bottom
Take, after being weighed by belt scale, be transported in charging of blast furnace tank, finally render in blast furnace.
Embodiment 6
6.1 vanadium ferrotianiums Jiao's raw material composition and quality proportioning
16 vanadium ferrotianium of table Jiao's raw material composition and quality proportioning/%
It is 40% that ferrovanadium titanium material will be contained, and coal dust is 60% proportions, and with addition of the 20% of adhesive ad pond om, will
Three is put into mixing 50min in intensive mixer, then under the pressure of 50Mpa using molded to roll-in ball machine, and obtains
A diameter of 40mm, intensity are not less than the iron coke composite pellet green-ball of 180N/ balls, and the green-ball for pressing is loaded in coke oven, in green-ball
Between using coke powder fill, prevent from mutually boning between iron coke composite pellet, after Center Temperature of Coke Cake is heated to 1050 DEG C protect
After holding 2 hours, finally obtain with high reactivity and high strength iron coke composite pellet.
6.2 vanadium ferrotianiums Jiao's performance
17 vanadium ferrotianium of table Jiao's performance
| Project | Compression strength of green pel let/N | Pelletizing crushing strength/N | Balling ratio/% | CRI | CSR |
| Embodiment 6 | 180.2 | 6210 | 94.0 | 59.3 | 57.7 |
The burnt using method of 6.3 vanadium ferrotianiums
18 vanadium ferrotianium of table is burnt（Add together with coke charge）Scheme/%
Finished product iron coke is loaded in independent ore deposit groove, according to, and iron coke 90.0：10.0 ratio render to the skin of burnt groove bottom
Take, after being weighed by belt scale, be transported in charging of blast furnace tank, finally render in blast furnace.
Claims (4)
1. a kind of blast furnace protecting burnt preparation method of vanadium ferrotianium, it is characterised in that be vanadium titanium material 10% by mass percent
～40%, coal dust 60%～90% is another to add vanadium titanium material and the adhesive of coal dust total amount 5%～20% to be put in intensive mixer
5～50min of mixing, then under 10～50MPa pressure using molded to roll-in ball machine and obtain a diameter of 20～40mm, by force
Degree is not less than the compound green-ball of iron coke of 30N/ balls, then iron coke compound green-ball is put into coking in coke oven, the compound green-ball of iron coke it
Between filled using coke powder, kept for 1～3 hour after the compound green-ball central temperature of iron coke is heated to 900～1100 DEG C, finally given
High intensity vanadium ferrotianium is burnt.
2. a kind of blast furnace protecting according to claim 1 burnt preparation method of vanadium ferrotianium, it is characterised in that described vanadium
Titanium material is containing TiO2Content range by mass percentage 12%～28% different grade vanadium ilmenite concentrate powder one kind or many
Kind.
3. a kind of blast furnace protecting according to claim 1 burnt preparation method of vanadium ferrotianium, it is characterised in that the coal dust
For 1/3 coking coal, bottle coal, lean coal, one or more of meager lean coal weakly caking coal dust, granularity<5mm accounts for 70% by mass percentage
More than.
4. a kind of blast furnace protecting according to claim 1 burnt preparation method of vanadium ferrotianium, it is characterised in that described to cohere
Agent is tar slag, one kind of pitch or two kinds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310399045.6A CN104419793B (en) | 2013-09-05 | 2013-09-05 | A kind of blast furnace protecting vanadium ferrotianium Jiao and its making and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310399045.6A CN104419793B (en) | 2013-09-05 | 2013-09-05 | A kind of blast furnace protecting vanadium ferrotianium Jiao and its making and use method |
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| Publication Number | Publication Date |
|---|---|
| CN104419793A CN104419793A (en) | 2015-03-18 |
| CN104419793B true CN104419793B (en) | 2017-03-29 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420431A (en) * | 2015-11-30 | 2016-03-23 | 攀钢集团攀枝花钢钒有限公司 | Blast furnace protecting agent prepared from titanium-containing slag and furnace protecting method |
| CN106521060A (en) * | 2016-10-20 | 2017-03-22 | 新冶高科技集团有限公司 | Titanium-containing powder for blast furnace protection and furnace protection method for injection through blast furnace coal injection system |
| CN109097515B (en) * | 2018-08-31 | 2020-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing iron coke by sintering return ores of high-titanium schreyerite and iron coke prepared by method |
| CN111944993B (en) * | 2020-09-11 | 2022-08-05 | 攀钢集团研究院有限公司 | Method for improving sintering yield of titanium concentrate |
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