CN101280351A - Production method of vanadium slag - Google Patents
Production method of vanadium slag Download PDFInfo
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- CN101280351A CN101280351A CNA2008101123535A CN200810112353A CN101280351A CN 101280351 A CN101280351 A CN 101280351A CN A2008101123535 A CNA2008101123535 A CN A2008101123535A CN 200810112353 A CN200810112353 A CN 200810112353A CN 101280351 A CN101280351 A CN 101280351A
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- vanadium
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- hot metal
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- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 128
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 239000002893 slag Substances 0.000 title claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 32
- 239000001301 oxygen Substances 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 24
- 239000008188 pellet Substances 0.000 claims abstract description 24
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000000571 coke Substances 0.000 claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 239000007800 oxidant agent Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 58
- 239000002184 metal Substances 0.000 claims description 58
- 239000000843 powder Substances 0.000 claims description 54
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 27
- 229910052698 phosphorus Inorganic materials 0.000 claims description 27
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 25
- 239000011574 phosphorus Substances 0.000 claims description 25
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 23
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 23
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 23
- 239000011575 calcium Substances 0.000 claims description 23
- 229910052791 calcium Inorganic materials 0.000 claims description 23
- 239000010436 fluorite Substances 0.000 claims description 23
- 239000004571 lime Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 23
- 239000010459 dolomite Substances 0.000 claims description 18
- 229910000514 dolomite Inorganic materials 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000000654 additive Substances 0.000 claims description 17
- 230000000996 additive effect Effects 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 239000000292 calcium oxide Substances 0.000 claims description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 12
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 abstract 3
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000007670 refining Methods 0.000 abstract 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 235000013312 flour Nutrition 0.000 abstract 1
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 8
- 239000005864 Sulphur Substances 0.000 description 8
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 7
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 7
- 239000000377 silicon dioxide Substances 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 229960001866 silicon dioxide Drugs 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention provides a vanadium slag producing method, which comprises the steps that the pellet is made of the fine flour of vanadium-titanium magnetite by burning; the high-magnesia made of vanadium-titanium magnetite by burning is burnt into agglomerate; coke is added into the mixed blending of the pellet and the high-magnesia agglomerate, then the mixed blending is sent to the blast furnace for smelting, and the vanadium contained hot iron is obtained; the vanadium contained hot iron is poured into a converter, vanadium-titanium magnetite and/or rolling scale which occupies 3 to 10 percent of the vanadium contained hot iron are added, and dissolvent with melting components is added, when the temperature of the vanadium contained hot iron reaches 1200 to 1320 DEG C, the gas oxidizing agent is used for air refining, the speed rate is 1.3 to 3.5m<3>/ton per minute(accounted according to the oxygen), the air refining can be stopped when the temperature reaches to 1450 to 1650 DEG C, the specific surface area of the melting bath is 0.10 to 0.35m<2>/ton, and the vanadium slag is obtained. The technological flow of the vanadium slag producing method of the invention is simple, the energy consumption low, the production rate of the vanadium slag is high, and the manufacturing cost is low.
Description
Technical field
The invention belongs to field of metallurgy, particularly a kind of production method of vanadium slag.
Background technology
Vanadium is widely used in fields such as iron and steel, chemical industry, aerospace, wherein 85% is applied to Iron And Steel Industry, adds vanadium in steel, can improve hardness of steel, alleviates steel construction weight, and reduces cost.Vanadium Pentoxide in FLAKES is the raw material of preparation vanadium steel, and the raw material of extraction Vanadium Pentoxide in FLAKES mainly is the vanadium slag that obtains from pig iron containing vanadium.The technology of producing at present vanadium slag is the molten iron-steelmaking that will contain vanadium earlier, slag is returned batching after, advance electrosmelting, improve the molten iron content of vanadium through circulation repeatedly, again vanadium-bearing hot metal is obtained vanadium slag behind bottom-blown converter.This complex technical process, the loss of molten iron thermal source is big, and the rate of recovery of vanadium slag is low, the production cost height.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of technical process is simple, energy waste is little, the production method of the productive rate height of vanadium slag, vanadium slag that production cost is low.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of production method of vanadium slag comprises the steps:
(1) with the v-ti magnetite tantalite power with addition of coke powder, wilkinite, remove phosphorus additive and advance cylinder mixer batch mixing after, dry after sending into the balling disc balling-up, send into sinter machine again and be fired into pellet, wherein:
The weight percent that wilkinite accounts for total amount is 0～3%;
The weight percent that coke powder accounts for total amount is 2%～6%;
The weight percent that accounts for total amount except that phosphorus additive is 0～4%;
Drying course can fully be removed the large quantity of moisture in the batching in this step, can improve sintering finished rate, increases the intensity of agglomerate, and improves the output of pellet.
(2) with v-ti magnetite rough with coke powder, ground dolomite, fluorite powder, remove phosphorus additive, calcium lime powder advances cylinder mixer batch mixing, makes ball, send into sinter machine again and fire the high magnesia agglomerate, wherein:
The weight percent that coke powder accounts for total amount is 2%～6%;
The weight percent that the fluorite powder accounts for total amount is 0～0.3%;
The weight percent that accounts for total amount except that phosphorus additive is 0～4%;
The weight percent that ground dolomite accounts for total amount is 3%～15%;
The weight percent that calcium lime powder accounts for total amount is 0～3%;
(3) above-mentioned pellet is added coke in the blended batching mutually with the high magnesia agglomerate, send into blast-furnace smelting and get vanadium-bearing hot metal, wherein:
The weight percent that pellet accounts for total amount is 10%～35%;
All the other are the high magnesia agglomerate;
(4) above-mentioned vanadium-bearing hot metal is poured in the converter, add that to account for the vanadium-bearing hot metal weight percent be 3%～10% the rough and/or rolling mill scale of v-ti magnetite, and add the solvent of the composition of fluxing, begin to blow with gaseous oxidant when the vanadium-bearing hot metal temperature is 1200～1320 ℃, speed is 1.3～3.5m
3/ ton. divide (pressing oxygen calculates), stop oxygen blast when the vanadium-bearing hot metal temperature is 1450～1650 ℃, the specific surface area in molten bath is 0.10～0.35m
2/ ton gets vanadium slag.
The production method of the another kind of vanadium slag of the present invention comprises the steps:
(1) vanadium titano-magnetite and coke powder, ground dolomite, fluorite powder, calcium lime powder are sent into cylinder mixer batch mixing, made ball, send into sinter machine again and fire the high magnesia agglomerate, wherein:
The weight percent that coke powder accounts for total amount is 2%～6%;
The weight percent that the fluorite powder accounts for total amount is 0～0.3%;
The weight percent that ground dolomite accounts for total amount is 3%～15%;
The weight percent that calcium lime powder accounts for total amount is 0～3%;
(2) with vanadium titano-magnetite with addition of fluorite powder, ground dolomite, remove phosphorus additive and send into the revolution cellar for storing things and be fired into the schreyerite slag, wherein:
The weight percent that the fluorite powder accounts for total amount is 0～6%;
The weight percent that ground dolomite accounts for total amount is 1%～5%;
The weight percent that accounts for total amount except that phosphorus additive is 0～4%;
(3) with above-mentioned high magnesia agglomerate and schreyerite slag mix, send into blast-furnace smelting, wherein:
The weight percent that the schreyerite slag accounts for total amount is 15%～40%;
All the other are the high magnesia agglomerate;
(4) above-mentioned vanadium-bearing hot metal is poured in the converter, add that to account for the vanadium-bearing hot metal weight percent be 3%～10% the rough and/or rolling mill scale of v-ti magnetite, and add the solvent of the composition of fluxing, begin to blow with gaseous oxidant when the vanadium-bearing hot metal temperature is 1200～1320 ℃, speed is 1.3～3.5m
3/ ton. divide (pressing oxygen calculates), stop oxygen blast when the vanadium-bearing hot metal temperature is 1450～1650 ℃, the specific surface area in molten bath is 0.10～0.35m
2/ ton gets vanadium slag.
In order to improve the slag fall of vanadium slag, after stopping oxygen blast, available rare gas element argon gas blew 1-5 minute to vanadium-bearing hot metal again.
In order to improve the slag fall of vanadium slag, before vanadium-bearing hot metal is carried out oxygen blast, in vanadium-bearing hot metal, add steel scrap, addition is the 1-10% of weight of molten iron, after oxygen blast 1-4 minute, adds steel scrap once more, addition is molten iron content 4-10%.
The production method of vanadium slag of the present invention, the weight percentage of the Calcium Fluoride (Fluorspan) in the wherein said fluorite powder is 50%～75%;
Magnesian weight percentage in the described ground dolomite is 17%～21%;
Magnesian weight percentage in the described magnesium oxide slag is 10%～30%;
The weight percentage of the calcium oxide of described calcium lime powder is 70%～90%.
The production method of vanadium slag of the present invention, wherein said pellet and high magnesia agglomerate the stockline degree of depth of blended batching in blast furnace mutually are 0.8～3.5m.
The production method of vanadium slag of the present invention, the composition of wherein said vanadium slag following (by weight percentage):
Vanadium Pentoxide in FLAKES 12%～26% silicon-dioxide 8.05%～24.10%
Manganese oxide 4.20%～13.50% titanium oxide 4.25%～15.0%
Calcium oxide 0.5～30% sulphur 0.008%～0.060%
Phosphorus 0.005%～0.050%
All the other are ferric oxide.
The production method of vanadium slag of the present invention, the wherein composition of vanadium-bearing hot metal following (weight percent):
Vanadium 0.4～0.9 carbon 3.8～4.8 silicon 0.35～2.0
Manganese 0.12～0.36 titanium 0.03～0.35 bronze medal 0.02～0.29
Nickel 0.025～0.23 cobalt 0.001～0.09
Sulphur 0.001～0.10 phosphorus 0.015～0.09
The production method of vanadium slag of the present invention is directly poured vanadium-bearing hot metal into and is prepared vanadium slag in the converter, has simplified technical process, has reduced the thermal source loss of molten iron, and energy waste is little, has reduced production cost; In vanadium-bearing hot metal, add the rough and/or rolling mill scale of v-ti magnetite, make that more vanadium is converted into vanadium slag in the vanadium-bearing hot metal, improved the productive rate of vanadium slag.
Embodiment
Rough Fe, the TiO of comprising of the selected v-ti magnetite of the present invention
2, V
2O
5, Co, Ni, S, P etc.
The selected v-ti magnetite tantalite power of the present invention comprises Fe, TiO
2, V
2O
5, Co, Ni, Al
2O
3, SiO
2, CaO, MgO, S, P etc.
The weight percentage of the Calcium Fluoride (Fluorspan) in the selected fluorite powder of the present invention is 50%～75%;
Magnesian weight percentage in the ground dolomite is 17%～21%;
Magnesian weight percentage in the magnesium oxide slag is 10%～30%;
The weight percentage of the calcium oxide of calcium lime powder is 70%～90%.
Embodiment 1
(1) 100 tons of v-ti magnetite tantalite powers, 3 tons of coke powders, 1 ton of wilkinite are sent into cylinder mixer batch mixing after, dry after sending into the balling disc balling-up, send into sinter machine again, utilize blast furnace gas to be fired into pellet.
(2) 200 tons of v-ti magnetites is rough, 6 tons of coke powders, 8 tons of ground dolomites, 0.2 ton of fluorite powder, 2 tons of calcium lime powders, 0.1 ton remove phosphorus additive and send into cylinder mixer batch mixing, make ball, send into sinter machine again, utilize blast furnace gas to fire the high magnesia agglomerate.
(3) above-mentioned pellet is mixed mutually with the high magnesia agglomerate, add an amount of coke according to furnace temperature, send into the blast-furnace smelting vanadium-bearing hot metal, wherein to account for the weight percent of total amount be 10% to pellet.Pellet and high magnesia agglomerate the stockline degree of depth of blended batching in blast furnace mutually are 0.8m～3.5m.
(4) 50 tons of vanadium-bearing hot metals are poured in the converter, it is rough to add 1.5 tons of v-ti magnetites, and adds the solvent such as the calcium lime powder of 0.5 ton of composition of fluxing, and begins to blow with air when the vanadium-bearing hot metal temperature is 1200 ℃, and speed is 1.3m
3/ ton. divide (pressing oxygen calculates), the specific surface area in molten bath is 0.10m
2/ ton stops oxygen blast, the composition of gained vanadium slag following (by weight percentage) when the vanadium-bearing hot metal temperature is 1450 ℃:
Vanadium Pentoxide in FLAKES 13 silicon-dioxide 9.03
Manganese oxide 5.5 titanium oxide 5.6 calcium oxide 2.9
Sulphur 0.009 phosphorus 0.006
All the other are ferric oxide.
Collect the gained vanadium slag, and molten iron is wherein poured out, the gained molten iron can be used for preparing vanadium steel.
Embodiment 2
(1) with 150 tons of v-ti magnetite tantalite powers, 7.5 tons of coke powders, 4 tons of wilkinites, 1.5 tons remove phosphorus additive and send into cylinder mixer batch mixing after, dry after sending into the balling disc balling-up, send into sinter machine again, utilize blast furnace gas to be fired into pellet.
(2) 300 tons of v-ti magnetites is rough, 15 tons of coke powders, 40 tons of ground dolomites, 0.8 ton of fluorite powder, 9 tons of calcium lime powders are sent into cylinder mixer batch mixing, are made ball, send into sinter machine again, utilize blast furnace gas to fire the high magnesia agglomerate.
(3) above-mentioned pellet is mixed mutually with the high magnesia agglomerate, add an amount of coke according to furnace temperature, send into the blast-furnace smelting vanadium-bearing hot metal, wherein to account for the weight percent of total amount be 20% to pellet.Pellet and high magnesia agglomerate the stockline degree of depth of blended batching in blast furnace mutually are 0.8m～3.5m.
(4) 100 tons of vanadium-bearing hot metals are poured in the converter, added 9 tons of rolling mill scales, and add the solvent such as the calcium lime powder of 1 ton of composition of fluxing, begin to blow with air when the vanadium-bearing hot metal temperature is 1270 ℃, speed is 2.8m
3/ ton. divide (pressing oxygen calculates), the specific surface area in molten bath is 0.2m
2/ ton stops oxygen blast when the vanadium-bearing hot metal temperature is 1550 ℃, with argon gas vanadium-bearing hot metal was blown 2 minutes again, and speed is 0.3m
2/ ton, the composition of gained vanadium slag following (by weight percentage):
Vanadium Pentoxide in FLAKES 18 silica 1s 5.2
Manganese oxide 8.5 titanium oxide 10.6 calcium oxide 0.5
Sulphur 0.035 phosphorus 0.026
All the other are ferric oxide.
Embodiment 3
(1) 70 tons of v-ti magnetite tantalite powers, 2.8 tons of coke powders are sent into cylinder mixer batch mixing after, dry after sending into the balling disc balling-up, send into sinter machine again, utilize blast furnace gas to be fired into pellet.
(2) 120 tons of v-ti magnetites is rough, 5.5 tons of coke powders, 15 tons of ground dolomites, 0.1 ton of calcium lime powder, 4.8 tons remove phosphorus additive and send into cylinder mixer batch mixing, make ball, send into sinter machine again, utilize blast furnace gas to fire the high magnesia agglomerate.
(3) above-mentioned pellet is mixed mutually with the high magnesia agglomerate, add an amount of coke according to furnace temperature, send into the blast-furnace smelting vanadium-bearing hot metal, wherein to account for the weight percent of total amount be 35% to pellet.Pellet and high magnesia agglomerate the stockline degree of depth of blended batching in blast furnace mutually are 0.8m～3.5m.
(4) 80 tons of vanadium-bearing hot metals are poured in the converter, add that 3.5 tons of v-ti magnetites are rough, 2.6 tons of rolling mill scales and 5 tons of steel scraps, and add the solvent such as the calcium lime powder of 1.6 tons of compositions of fluxing, and when being 1300 ℃, the vanadium-bearing hot metal temperature begins to blow with air, and speed is 3.5m
3/ ton. divide (pressing oxygen calculates), the specific surface area in molten bath is 0.35m
2/ ton after 1 minute, adds 6.5 tons steel scrap in oxygen blast again.Stop oxygen blast when the vanadium-bearing hot metal temperature is 1450 ℃, with argon gas vanadium-bearing hot metal was blown 1 minute, speed is 0.5m
2/ ton, the composition of gained vanadium slag following (by weight percentage):
Vanadium Pentoxide in FLAKES 26 silicon-dioxide 23.2
Manganese oxide 12.8 titanium oxide 13.5 calcium oxide 6
Sulphur 0.05 phosphorus 0.038
All the other are ferric oxide.
Embodiment 4
(1) 90 tons of vanadium titano-magnetites, 2.5 tons of coke powders, 10 tons of ground dolomites, 0.5 ton of calcium lime powder are sent into cylinder mixer batch mixing, made ball, send into sinter machine again, utilize blast furnace gas to fire the high magnesia agglomerate.
(2) with 90 tons of vanadium titano-magnetites, 5 tons of fluorite powder, 1 ton of ground dolomite, 0.5 ton remove phosphorus additive and send into the revolution cellar for storing things, utilize blast furnace gas to be fired into the schreyerite slag.
(3) with above-mentioned high magnesia agglomerate and schreyerite slag mix, send into blast-furnace smelting, wherein to account for the weight percent of total amount be 20% to the schreyerite slag;
(4) 100 tons of vanadium-bearing hot metals are poured in the converter, added 5 tons of rough, 3 tons of rolling mill scales of v-ti magnetite, and add the solvent such as the calcium lime powder of 1.3 tons of compositions of fluxing, begin to blow with air when the vanadium-bearing hot metal temperature is 1230 ℃, speed is 3.0m
3/ ton. divide (pressing oxygen calculates), the specific surface area in molten bath is 0.26m
2/ ton stops oxygen blast when the vanadium-bearing hot metal temperature is 1500 ℃, with argon gas vanadium-bearing hot metal was blown 5 minutes again, and speed is 0.3m
2/ ton, the composition of gained vanadium slag following (by weight percentage):
Vanadium Pentoxide in FLAKES 20 silicon-dioxide 9.6
Manganese oxide 4.3 titanium oxide 5.9 calcium oxide 2.7
Sulphur 0.01 phosphorus 0.02
All the other are ferric oxide.
Embodiment 5
(1) 138 tons of vanadium titano-magnetites, 6.5 tons of coke powders, 5.2 tons of ground dolomites, 0.3 ton of fluorite powder are sent into cylinder mixer batch mixing, made ball, send into sinter machine again, utilize blast furnace gas to fire the high magnesia agglomerate.
(2) 78 tons of vanadium titano-magnetites, 0.2 ton of fluorite powder, 3 tons of ground dolomites are sent into the revolution cellar for storing things, utilize blast furnace gas to be fired into the schreyerite slag.
(3) with above-mentioned high magnesia agglomerate and schreyerite slag mix, send into blast-furnace smelting, wherein to account for the weight percent of total amount be 28% to the schreyerite slag;
(4) 70 tons of vanadium-bearing hot metals are poured in the converter, added that 2 tons of v-ti magnetites are rough, 5 tons of rolling mill scales and 6 tons of steel scraps, and add the solvent such as the calcium lime powder of 0.5 ton of composition of fluxing, begin to blow with air when the vanadium-bearing hot metal temperature is 1310 ℃, speed is 3.5m
3/ ton. divide (pressing oxygen calculates), the specific surface area in molten bath is 0.35m
2/ ton after 4 minutes, adds 6 tons steel scrap in oxygen blast again.Stop oxygen blast when the vanadium-bearing hot metal temperature is 1630 ℃, with argon gas vanadium-bearing hot metal was blown 4 minutes, speed is 0.2m
2/ ton, the composition of gained vanadium slag following (by weight percentage):
Vanadium Pentoxide in FLAKES 25 silicon-dioxide 20
Manganese oxide 5.3 titanium oxide 6.5 calcium oxide 0.6
Sulphur 0.013 phosphorus 0.025
All the other are ferric oxide.
Embodiment 6
(1) 30 tons of vanadium titano-magnetites, 1 ton of coke powder, 2 tons of ground dolomites, 0.05 ton of fluorite powder, 0.03 ton of calcium lime powder are sent into cylinder mixer batch mixing, made ball, send into sinter machine again, utilize blast furnace gas to fire the high magnesia agglomerate.
(2) with 20 tons of vanadium titano-magnetites, 1 ton of fluorite powder, 0.8 ton of ground dolomite, 0.5 ton remove phosphorus additive and send into the revolution cellar for storing things, utilize blast furnace gas to be fired into the schreyerite slag.
(3) with above-mentioned high magnesia agglomerate and schreyerite slag mix, send into blast-furnace smelting, wherein to account for the weight percent of total amount be 40% to the schreyerite slag;
(4) 20 tons of vanadium-bearing hot metals are poured in the converter, added 0.4 ton of rough, 1.5 tons of rolling mill scale of v-ti magnetite, and add the solvent such as the calcium lime powder of 0.1 ton of composition of fluxing, begin to blow with air when the vanadium-bearing hot metal temperature is 1320 ℃, speed is 3.3m
3/ ton. divide (pressing oxygen calculates), the specific surface area in molten bath is 0.32m
2/ ton stops oxygen blast when the vanadium-bearing hot metal temperature is 1650 ℃, with argon gas vanadium-bearing hot metal was blown 2 minutes again, and speed is 0.3m
2/ ton, the composition of gained vanadium slag following (by weight percentage):
Vanadium Pentoxide in FLAKES 26 silica 1s 6.3
Manganese oxide 5.3 titanium oxide 4.6 calcium oxide 1.2
Sulphur 0.009 phosphorus 0.04
All the other are ferric oxide.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (10)
1, a kind of production method of vanadium slag comprises the steps:
(1) with the v-ti magnetite tantalite power with addition of coke powder, wilkinite, remove phosphorus additive and advance cylinder mixer batch mixing after, dry after sending into the balling disc balling-up, send into sinter machine again and be fired into pellet, wherein:
The weight percent that wilkinite accounts for total amount is 0～3%;
The weight percent that coke powder accounts for total amount is 2%～6%;
The weight percent that accounts for total amount except that phosphorus additive is 0～4%;
(2) with v-ti magnetite rough with coke powder, ground dolomite, fluorite powder, remove phosphorus additive, calcium lime powder advances cylinder mixer batch mixing, makes ball, send into sinter machine again and fire the high magnesia agglomerate, wherein:
The weight percent that coke powder accounts for total amount is 2%～6%;
The weight percent that the fluorite powder accounts for total amount is 0～0.3%;
The weight percent that accounts for total amount except that phosphorus additive is 0～4%;
The weight percent that ground dolomite accounts for total amount is 3%～15%;
The weight percent that calcium lime powder accounts for total amount is 0～3%;
(3) above-mentioned pellet is added coke in the blended batching mutually with the high magnesia agglomerate, send into blast-furnace smelting and get vanadium-bearing hot metal, wherein:
The weight percent that pellet accounts for total amount is 10%～35%;
All the other are the high magnesia agglomerate;
(4) above-mentioned vanadium-bearing hot metal is poured in the converter, add that to account for the vanadium-bearing hot metal weight percent be 3%～10% the rough and/or rolling mill scale of v-ti magnetite, and add the solvent of the composition of fluxing, begin to blow with gaseous oxidant when the vanadium-bearing hot metal temperature is 1200～1320 ℃, speed is 1.3～3.5m
3/ ton. divide (pressing oxygen calculates), stop oxygen blast when the vanadium-bearing hot metal temperature is 1450～1650 ℃, the specific surface area in molten bath is 0.10～0.35m
2/ ton gets vanadium slag.
2, the production method of vanadium slag according to claim 1 is characterized in that: after stopping oxygen blast, with the rare gas element argon gas vanadium-bearing hot metal was blown 1-5 minute again.
3, the production method of vanadium slag according to claim 2 is characterized in that: before vanadium-bearing hot metal is carried out oxygen blast, add steel scrap in vanadium-bearing hot metal, addition is the 1-10% of weight of molten iron, after oxygen blast 1-4 minute, add steel scrap once more, addition is molten iron content 4-10%.
4, the production method of vanadium slag according to claim 3 is characterized in that:
The weight percentage of the Calcium Fluoride (Fluorspan) in the described fluorite powder is 50%～75%;
Magnesian weight percentage in the described ground dolomite is 17%～21%;
Magnesian weight percentage in the described magnesium oxide slag is 10%～30%;
The weight percentage of the calcium oxide of described calcium lime powder is 70%～90%.
5, the production method of vanadium slag according to claim 4 is characterized in that: described pellet and high magnesia agglomerate the stockline degree of depth of blended batching in blast furnace mutually are 0.8～3.5m.
6, a kind of production method of vanadium slag comprises the steps:
(1) vanadium titano-magnetite and coke powder, ground dolomite, fluorite powder, calcium lime powder are sent into cylinder mixer batch mixing, made ball, send into sinter machine again and fire the high magnesia agglomerate, wherein:
The weight percent that coke powder accounts for total amount is 2%～6%;
The weight percent that the fluorite powder accounts for total amount is 0～0.3%;
The weight percent that ground dolomite accounts for total amount is 3%～15%;
The weight percent that calcium lime powder accounts for total amount is 0～3%;
(2) with vanadium titano-magnetite with addition of fluorite powder, ground dolomite, remove phosphorus additive and send into the revolution cellar for storing things and be fired into the schreyerite slag, wherein:
The weight percent that the fluorite powder accounts for total amount is 0～6%;
The weight percent that ground dolomite accounts for total amount is 1%～5%;
The weight percent that accounts for total amount except that phosphorus additive is 0～4%;
(3) with above-mentioned high magnesia agglomerate and schreyerite slag mix, send into blast-furnace smelting, wherein:
The weight percent that the schreyerite slag accounts for total amount is 15%～40%;
All the other are the high magnesia agglomerate;
(4) above-mentioned vanadium-bearing hot metal is poured in the converter, add that to account for the vanadium-bearing hot metal weight percent be 3%～10% the rough and/or rolling mill scale of v-ti magnetite, and add the solvent of the composition of fluxing, begin to blow with gaseous oxidant when the vanadium-bearing hot metal temperature is 1200～1320 ℃, speed is 1.3～3.5m
3/ ton. divide (pressing oxygen calculates), stop oxygen blast when the vanadium-bearing hot metal temperature is 1450～1650 ℃, the specific surface area in molten bath is 0.10～0.35m
2/ ton gets vanadium slag.
7, the production method of vanadium slag according to claim 6 is characterized in that: after stopping oxygen blast, with the rare gas element argon gas vanadium-bearing hot metal was blown 1-5 minute again.
8, the production method of vanadium slag according to claim 7 is characterized in that: before vanadium-bearing hot metal is carried out oxygen blast, add steel scrap in vanadium-bearing hot metal, addition is the 1-10% of weight of molten iron, after oxygen blast 1-4 minute, add steel scrap once more, addition is molten iron content 4-10%.
9, the production method of vanadium slag according to claim 8 is characterized in that:
The weight percentage of the Calcium Fluoride (Fluorspan) in the described fluorite powder is 50%～75%;
Magnesian weight percentage in the described ground dolomite is 17%～21%;
Magnesian weight percentage in the described magnesium oxide slag is 10%～30%;
The weight percentage of the calcium oxide of described calcium lime powder is 70%～90%.
10, the production method of vanadium slag according to claim 9 is characterized in that: described pellet and high magnesia agglomerate the stockline degree of depth of blended batching in blast furnace mutually are 0.8～3.5m.
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| CNA2008101123535A CN101280351A (en) | 2008-05-22 | 2008-05-22 | Production method of vanadium slag |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220440A (en) * | 2011-05-26 | 2011-10-19 | 攀钢集团有限公司 | Vanadium-titanium magnetite blast furnace smelting method capable of improving vanadium yield |
| CN102912071A (en) * | 2012-09-19 | 2013-02-06 | 攀钢集团攀枝花钢铁研究院有限公司 | High-calcium vanadium slag for extracting vanadium by calcium process and method for producing high-calcium vanadium slag |
| CN103194565A (en) * | 2013-04-28 | 2013-07-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for synchronously dephosphorization and vanadium extraction of vanadium-containing molten iron |
| CN103484664A (en) * | 2013-10-22 | 2014-01-01 | 成都天禄源商贸有限公司 | Titanium clinker for smelting high-titanium slag |
| CN103484662A (en) * | 2013-10-22 | 2014-01-01 | 成都天禄源商贸有限公司 | High-titanium slag smelting technique |
| CN105238893A (en) * | 2015-11-02 | 2016-01-13 | 河北钢铁股份有限公司承德分公司 | Method for conducting sintering-blast furnace iron making on vanadium-contained solid waste in ore blending manner |
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2008
- 2008-05-22 CN CNA2008101123535A patent/CN101280351A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220440A (en) * | 2011-05-26 | 2011-10-19 | 攀钢集团有限公司 | Vanadium-titanium magnetite blast furnace smelting method capable of improving vanadium yield |
| CN102912071A (en) * | 2012-09-19 | 2013-02-06 | 攀钢集团攀枝花钢铁研究院有限公司 | High-calcium vanadium slag for extracting vanadium by calcium process and method for producing high-calcium vanadium slag |
| CN102912071B (en) * | 2012-09-19 | 2015-07-22 | 攀钢集团攀枝花钢铁研究院有限公司 | High-calcium vanadium slag for extracting vanadium by calcium process and method for producing high-calcium vanadium slag |
| CN103194565A (en) * | 2013-04-28 | 2013-07-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for synchronously dephosphorization and vanadium extraction of vanadium-containing molten iron |
| CN103484664A (en) * | 2013-10-22 | 2014-01-01 | 成都天禄源商贸有限公司 | Titanium clinker for smelting high-titanium slag |
| CN103484662A (en) * | 2013-10-22 | 2014-01-01 | 成都天禄源商贸有限公司 | High-titanium slag smelting technique |
| CN105238893A (en) * | 2015-11-02 | 2016-01-13 | 河北钢铁股份有限公司承德分公司 | Method for conducting sintering-blast furnace iron making on vanadium-contained solid waste in ore blending manner |
| CN105238893B (en) * | 2015-11-02 | 2017-10-31 | 河北钢铁股份有限公司承德分公司 | A kind of method that solid waste containing vanadium sinters blast furnace ironmaking with ore deposit |
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