CN111235389A - Smelting method and device of vanadium titano-magnetite - Google Patents
Smelting method and device of vanadium titano-magnetite Download PDFInfo
- Publication number
- CN111235389A CN111235389A CN202010234535.0A CN202010234535A CN111235389A CN 111235389 A CN111235389 A CN 111235389A CN 202010234535 A CN202010234535 A CN 202010234535A CN 111235389 A CN111235389 A CN 111235389A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- iron
- reduction
- slag
- flue gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 66
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 58
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000003723 Smelting Methods 0.000 title claims abstract description 39
- 239000002893 slag Substances 0.000 claims abstract description 120
- 230000009467 reduction Effects 0.000 claims abstract description 90
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052742 iron Inorganic materials 0.000 claims abstract description 35
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 27
- 238000002844 melting Methods 0.000 claims abstract description 27
- 230000008018 melting Effects 0.000 claims abstract description 27
- MRHSJWPXCLEHNI-UHFFFAOYSA-N [Ti].[V].[Fe] Chemical compound [Ti].[V].[Fe] MRHSJWPXCLEHNI-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 238000011946 reduction process Methods 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 229910000805 Pig iron Inorganic materials 0.000 claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 50
- 239000003546 flue gas Substances 0.000 claims description 50
- 230000008569 process Effects 0.000 claims description 38
- 239000003245 coal Substances 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 239000002918 waste heat Substances 0.000 claims description 10
- 238000006477 desulfuration reaction Methods 0.000 claims description 8
- 230000023556 desulfurization Effects 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 claims description 2
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 238000010128 melt processing Methods 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 abstract description 37
- 229910052719 titanium Inorganic materials 0.000 abstract description 34
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 17
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 abstract description 11
- 238000004064 recycling Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 25
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 20
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 18
- 239000007788 liquid Substances 0.000 description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 17
- 229910052760 oxygen Inorganic materials 0.000 description 17
- 239000001301 oxygen Substances 0.000 description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 13
- 239000000292 calcium oxide Substances 0.000 description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 13
- 229910052593 corundum Inorganic materials 0.000 description 13
- 229910001845 yogo sapphire Inorganic materials 0.000 description 13
- 229910052681 coesite Inorganic materials 0.000 description 12
- 229910052906 cristobalite Inorganic materials 0.000 description 12
- 239000000377 silicon dioxide Substances 0.000 description 12
- 229910052682 stishovite Inorganic materials 0.000 description 12
- 229910052905 tridymite Inorganic materials 0.000 description 12
- 239000003345 natural gas Substances 0.000 description 10
- 239000000446 fuel Substances 0.000 description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 6
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 229910000882 Ca alloy Inorganic materials 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 3
- 239000003830 anthracite Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/18—Reducing step-by-step
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/006—Starting from ores containing non ferrous metallic oxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1263—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining metallic titanium from titanium compounds, e.g. by reduction
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
Abstract
The embodiment of the invention provides a method and a device for smelting vanadium titano-magnetite, wherein the method comprises the following steps: carrying out melting treatment on the raw materials to obtain first iron-vanadium-titanium slag; carrying out primary reduction on the first iron-vanadium-titanium slag to obtain second iron-vanadium-titanium slag; carrying out deep reduction on the second iron-vanadium-titanium slag to obtain vanadium-containing pig iron; the raw materials comprise vanadium titano-magnetite and a reducing agent; the iron content of the second iron-vanadium-titanium slag is 5-20 wt%; in the deep reduction process, 70-95 wt% of vanadium in the vanadium titano-magnetite is reduced to metal. According to the method provided by the embodiment of the invention, the vanadium-titanium magnetite ore is reduced step by step, so that the comprehensive recycling of iron, vanadium and titanium resources can be realized.
Description
Technical Field
The invention relates to vanadium titano-magnetite, in particular to a method and a device for smelting vanadium titano-magnetite.
Background
At present, the more mature process for smelting vanadium titano-magnetite is a blast furnace process, but the process can only recover iron and vanadium, and blast furnace slag is TiO2The content of the titanium is high (20-25%), so that the titanium cannot be used as a building material raw material, the waste of titanium is caused, and a large amount of solid waste of the blast furnace slag is stacked.
The non-blast furnace method mainly comprises a pre-reduction-electric furnace method, a reduction-grinding method, a sodium roasting-pre-reduction-electric furnace method and the like. Although the pre-reduction-electric furnace method has short flow, environment friendliness and high production efficiency, the method has the problems of high energy consumption, difficult smelting of high-titanium slag, low vanadium-titanium recovery rate and the like, and is difficult to realize industrial production; the reduction-grinding separation method has low operation temperature and high comprehensive utilization rate of vanadium, titanium and iron, but has long process flow, high grinding cost, small production scale and far lower economical efficiency than the pre-reduction-electric furnace method; the sodium roasting-prereduction-electric furnace method has the advantages of high vanadium-titanium recovery rate, but has the problems of large sodium modifier addition amount, long treatment process, large sewage treatment capacity and the like, and has poor feasibility.
The traditional blast furnace process can not recycle titanium resources, and the pre-reduction-electric furnace method generally adopts the reduction melting temperature of 1550-1650 ℃, adds excessive carbon for deep reduction to obtain vanadium-containing molten iron and high titanium slag (TiO)2Content greater than 30%, typically 50%). In the deep reduction stage, TiO in the titanium slag2High content, high tendency to produce refractory Ti (C, N), and deterioration of slag properties. The technical problems of high melting point and high viscosity of the titanium slag in the deep reduction stage have not been solved through long-term enlarged experimental research.
The patent application with the application number of 201910859496.0 provides a process for comprehensively utilizing vanadium titano-magnetite by a pre-reduction-electric furnace deep reduction-sulfuric acid method, and metallized pellets after pre-reduction are arranged in an electric furnaceMelting and separating to obtain vanadium-containing molten iron and titanium-rich slag (TiO)245-50% of the total weight of the composition). The process has no special operation process in the deep reduction stage, common key problems (such as carbide formation, slag-metal separation state and the like) are not mentioned, key components (such as C, V in molten iron, the content of carbide in titanium slag and the like) of vanadium-containing molten iron and titanium slag are not given, the comprehensive indexes of the process are possibly not superior to those of the existing process, and the process is possibly required to be further improved from the practical application.
The patent application with application number 201910169070.2 proposes a process of vanadium titano-magnetite pre-reduction, electric furnace melting separation and hypergravity enrichment. The process is carried out in an electric furnace for melting and separating, semi-coke is used as a reducing agent for deep reduction, the operation temperature is low (1400-1550 ℃), and the recovery rates of Fe, V and Ti can exceed 99%, which is far higher than that of the existing research report. However, the process has the problems of long process flow, great difficulty in industrial popularization of related equipment and the like, how to ensure good deep reduction effect at a low operation temperature is not mentioned, and in addition, the ultrahigh metal recovery rate obtained by the process flow may be different from a calculation mode that only vanadium-containing molten iron and titanium slag are taken as products generally, but the calculation basis of the process is not listed (byproducts of multiple stages may be added into a recoverable part).
Disclosure of Invention
One of the main objects of the present invention is to provide a method for smelting vanadium titano-magnetite, which comprises: carrying out melting treatment on the raw materials to obtain first iron-vanadium-titanium slag; carrying out primary reduction on the first iron-vanadium-titanium slag to obtain second iron-vanadium-titanium slag; carrying out deep reduction on the second iron-vanadium-titanium slag to obtain vanadium-containing pig iron; the raw materials comprise vanadium titano-magnetite and a reducing agent; the iron content of the second iron-vanadium-titanium slag is 5-20 wt%; in the deep reduction process, 70-95 wt% of vanadium in the vanadium titano-magnetite is reduced to metal.
An embodiment of the present invention provides a vanadium titano-magnetite smelting device, including: the melting unit is used for melting the vanadium titano-magnetite to obtain first iron-vanadium-titanium slag; the first reduction unit is used for reducing the first iron-vanadium-titanium slag to obtain second iron-vanadium-titanium slag; and the second reduction unit is used for reducing the second iron-vanadium-titanium slag to obtain vanadium-containing pig iron.
According to the method provided by the embodiment of the invention, the vanadium-titanium magnetite ore is reduced step by step, so that the comprehensive recycling of iron, vanadium and titanium resources can be realized.
Drawings
FIG. 1 is a flow chart of a method for smelting vanadium titano-magnetite according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a vanadium titano-magnetite smelting device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive. The terms "first", "second", "third", and the like are used for distinguishing a plurality of products or processes with the same name, and are not limited thereto.
Referring to fig. 1, an embodiment of the present invention provides a method for smelting vanadium titano-magnetite, including:
carrying out melting treatment on the raw materials to obtain liquid high-iron vanadium titanium slag (first iron vanadium titanium slag);
carrying out primary reduction (first reduction) on the liquid high-iron vanadium titanium slag to obtain liquid low-iron vanadium titanium slag (second iron vanadium titanium slag); and
deeply reducing the liquid low-iron vanadium-titanium slag (for the second reduction) to obtain high-vanadium pig iron (vanadium-containing pig iron);
wherein, the raw materials comprise vanadium titano-magnetite and a reducing agent; the iron content of the liquid low-iron vanadium titanium slag is 5-20 wt%; in the deep reduction process, 70-95 wt% of vanadium in the vanadium-titanium magnet is reduced to metal.
In one embodiment, the iron content of the liquid low-iron vanadium titanium slag may be 6%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, etc.
In one embodiment, the reductant used in the melt processing process may be one or more of reduced coal, such as anthracite, and natural gas.
In one embodiment, the reducing agent used in the primary reduction process may be one or more of reduced coal, waste carbon, and natural gas, and 70-80 wt% of metallic iron oxide in the vanadium titano-magnetite is reduced to iron metal in the primary reduction process.
In one embodiment, the mass of the reducing agent in the primary reduction process may be 15% of the mass of the liquid high-iron vanadium titanium slag.
In one embodiment, the flue gas generated in the smelting process is subjected to a purification and recovery process, and the purification and recovery process may include a waste heat recovery process, a cooling process, a dust removal process, and a tail gas desulfurization process.
Referring to fig. 2, an embodiment of the present invention provides a vanadium titano-magnetite smelting apparatus for carrying out the above method, including:
the melting unit is used for melting the vanadium titano-magnetite to obtain liquid high-iron vanadium-titanium slag;
the first reduction unit is used for reducing the liquid high-iron vanadium titanium slag to obtain liquid low-iron vanadium titanium slag; and
and the second reduction unit is used for reducing the liquid low-iron vanadium-titanium slag to obtain vanadium-containing pig iron.
In one embodiment, the melting unit comprises a side-blown furnace.
In one embodiment, the first reduction unit includes a first ore-smelting electric furnace (preliminary reduction electric furnace), and the second reduction unit includes a second ore-smelting electric furnace (deep reduction electric furnace).
In one embodiment, the first ore-smelting electric furnace and the second ore-smelting electric furnace can both adopt electrodes to supply heat.
In one embodiment, the melting unit, the first reduction unit, and the second reduction unit are connected in sequence.
In one embodiment, the side-blown converter, the preliminary reduction electric furnace and the deep reduction electric furnace are connected in sequence through the molten slag runner and are arranged in a ladder manner.
In the invention, the side-blown converter, the first ore-smelting electric furnace and the second ore-smelting electric furnace can be all existing devices.
In one embodiment, the raw material for the melting process may further include a flux, which may be calcium oxide, quartz, or the like.
In one embodiment, the vanadium titano-magnetite and the reduced coal are mixed in a cylindrical mixer after being mixed, and then are continuously added into the side-blown furnace through a feeding system.
In one embodiment, the mass of the reduced coal is 10 to 30% of the mass of the vanadium titano-magnetite, for example, 12%, 15%, 18%, 20%, 22%, 25%, 28%.
In one embodiment, the side-blown converter adopts oxygen-enriched air or pure oxygen submerged combustion for melting and heat supplementing, and the fuel can be one or more of natural gas, coal gas, pulverized coal and other fuels.
In one embodiment, the combustion process in the side-blown converter is performed by using high oxygen-enriched or pure oxygen, and the oxygen concentration in the oxygen-enriched air may be 40-95% (v/v), such as 50%, 60%, 80%, 90%, etc.; the fuel can be cheap fuel such as bituminous coal, lignite and the like, so that the cost is reduced.
In one embodiment, the flow rate of the oxygen-enriched air may be 100-250 Nm3H, e.g. 130Nm3/h、150Nm3/h、180Nm3/h、200Nm3H, etc.
In one embodiment, the furnace body of the side-blown converter is a water-cooling water jacket device, one layer is a copper-steel composite water jacket, and the two layers and the three layers are copper water jackets, so that the strength of the furnace body is greatly enhanced, and the furnace bottom can be provided with a furnace hearth which is round or rectangular.
In one embodiment, a liquid molten pool is formed in the furnace body of the side-blown converter, and the smelting temperature can be 1400-1550 ℃, for example 1450 ℃ and 1500 ℃.
In one embodiment, a lance is provided within the side-blown converter, the lance being submerged below the molten bath, and oxygen-enriched air and fuel being directly injected into the interior of the molten bath through the side-blown submerged lance.
In one embodiment, the spray gun may employ a negative pressure water cooling device to ensure the safety of the spray gun region, and the center of the spray gun is pulverized coal, and the outer layer is nitrogen and oxygen.
In one embodiment, the pressure at the muzzle of the spray gun may be 0.1 to 1.0MPa, such as 0.2MPa, 0.5MPa, 0.6MPa, 0.8MPa, and the like.
In one embodiment, the cold vanadium titano-magnetite is rapidly melted and slagged by a high temperature molten pool in a side-blown furnace, maintaining the furnace in a weakly oxidizing atmosphere. And when the molten pool in the furnace reaches a certain height, discharging the liquid high-iron vanadium titanium slag into a preliminary reduction electric furnace of the first reduction unit.
In one embodiment, the air excess coefficient in the side-blown converter is controlled to 0.9 to 1.1, thereby maintaining a weakly oxidizing atmosphere in the side-blown converter.
In one embodiment, after the liquid molten high-iron vanadium titanium slag flows into the primary reduction electric furnace, the electrodes are used for supplying heat, and the reduction coal is added. In the primary reduction electric furnace, 70-80 wt% of metallic iron oxide in the vanadium-titanium magnetite is reduced to form a metal phase, namely low-vanadium coarse iron, and vanadium is basically reserved in liquid slag. TiO 22、SiO2、Al2O3And CaO and the like are combined to form slag phase.
In one embodiment, the reduction temperature in the preliminary reduction process is 1450-1550 ℃, such as 1480 ℃, 1500 ℃, 1520 ℃.
In one embodiment, when the iron content in the slag in the primary reduction process is 5-20 wt%, the discharged slag enters a deep reduction electric furnace of the second reduction unit.
In one embodiment, after the liquid molten low-iron vanadium titanium slag flows into the deep reduction electric furnace, the electrodes are used for supplying heat, and the composite reducing agent is added.
In one embodiment, the composite reducing agent used in the deep reduction process includes at least two of carbon, aluminum, silicon, iron and manganese, and for example, two, three or four reducing agents may be mixed for use.
In one embodiment, the composite reductant used in the deep reduction process includes coal and aluminum particles.
In one embodiment, the composite reducing agent used in the deep reduction process may be a silicon-calcium alloy or a silicon-iron alloy.
In one embodiment, the amount of the composite reducing agent may be 12-15% of the mass of the liquid low-iron vanadium titanium slag.
In one embodiment, the reduction temperature in the deep reduction process is 1600-1800 ℃, such as 1650 ℃, 1700 ℃ and 1750 ℃.
In one embodiment, 70-95 wt% of vanadium in the vanadium titano-magnetite is reduced into molten iron in a deep reduction furnace to form high vanadium pig iron. TiO 22、SiO2、Al2O3And CaO and the like enter into a slag phase in combination with slagging.
In one embodiment, when the iron content in the slag in the deep reduction process is less than 1 wt%, the slag is discharged.
In one embodiment, about 5 wt% sodium carbonate is dosed into the feed of the deep reduction electric furnace to reduce the slag viscosity and melting point.
In one embodiment, the slag produced during the deep reduction process is TiO-basedx-SiO2-Al2O3The slag type is the main one.
The smelting device for the vanadium titano-magnetite comprises a plurality of flue gas treatment units, so as to treat the flue gas generated in the smelting process.
In one embodiment, the flue gas generated in the smelting process is treated by the flue gas treatment unit and then discharged after reaching the standard.
In one embodiment, the smelting device comprises a first flue gas treatment unit, a second flue gas treatment unit and a third flue gas treatment unit, and the three flue gas treatment units can be the same.
In an embodiment, the first flue gas treatment unit, the second flue gas treatment unit, and the third flue gas treatment unit may each include a waste heat boiler, a surface cooler, a bag dust collector, and a tail gas desulfurization system, which are connected in sequence.
In one embodiment, flue gas generated in the smelting process enters an uptake flue of a waste heat boiler, the temperature of the flue gas at the outlet of the uptake flue is about 1500-1650 ℃, the temperature of the flue gas is reduced to about 350 ℃ after the flue gas passes through a convection zone of the waste heat boiler, and the flue gas is treated by a dust collector and a flue gas desulfurization system and then reaches the standard and is discharged.
In one embodiment, the first flue gas treatment unit is connected with the melting unit to treat the flue gas discharged by the melting unit; the second flue gas treatment unit is connected with the first reduction unit so as to treat the flue gas discharged by the first reduction unit; the third flue gas treatment unit is connected with the second reduction unit so as to treat the flue gas discharged by the second reduction unit.
In one embodiment, the side-blown converter is connected with the exhaust-heat boiler of the first flue gas treatment unit, the primary reduction electric furnace is connected with the exhaust-heat boiler of the second flue gas treatment unit, and the deep reduction electric furnace is connected with the exhaust-heat boiler of the third flue gas treatment unit.
In one embodiment, during operation, flue gas discharged from the smelting device enters a waste heat boiler for heat exchange treatment, steam after heat exchange can be sent to a waste heat power station, and the flue gas after heat exchange forms second flue gas and first smoke dust; the second flue gas is treated by a surface cooler and a bag dust collector to form third flue gas and second smoke dust; the third flue gas is treated by a tail gas desulfurization system and then is discharged after reaching the standard; the first smoke dust and the second smoke dust formed in the process can be conveyed to a raw material bin by air force for batching, and are mixed with the vanadium titano-magnetite raw material and then return to a side-blown furnace for treatment.
According to the embodiment of the invention, a short-flow continuous process of oxygen-enriched melting, primary reduction and deep reduction gradient graded recovery is adopted, so that the pelletizing and sintering processes in the traditional treatment process are omitted.
The device comprises the side-blown furnace, the primary reduction electric furnace and the deep reduction electric furnace, the minerals are directly melted in the side-blown furnace under the condition of weak oxidizing atmosphere, and the fuel utilization rate is high; most of iron which is easy to reduce is reduced in a primary reduction electric furnace, slag with high vanadium and titanium content can be obtained, the slag is further deeply reduced by using a non-carbonaceous solid strong reducing agent, and meanwhile, the slag form is adjusted, the product gas quantity is small, no carbon is introduced, the generation of high-melting-point substances Ti (C, N) is avoided, the slag property is improved, the actual production operation process is controllable, and the comprehensive utilization of iron, vanadium and titanium can be realized.
According to the embodiment of the invention, the liquid titanium slag is directly fed into the furnace for dilution through the molten bath smelting strengthening smelting, so that the smelting efficiency is improved, the comprehensive energy consumption is reduced, and the organic connection of energy flow and material flow among three smelting devices with different functions, such as a side-blown furnace, a primary reduction electric furnace, a deep reduction electric furnace and the like, is realized.
The method and apparatus for smelting vanadium titano-magnetite according to an embodiment of the present invention will be further described with reference to the accompanying drawings and specific examples.
The main components and contents of the schreyerite are shown in the following table:
| FeO(wt％) | Fe2O3(wt％) | TiO2(wt％) | V2O5(wt％) | CaO(wt％) | MgO(wt％) | SiO2(wt％) | Al2O3(wt％) |
| 8.24 | 69.60 | 13.78 | 1.74 | 0.07 | 1.00 | 1.46 | 3.83 |
the reducer anthracite comprises the following components in percentage by weight:
| fixed carbon (wt%) | Ash content (wt%) | Volatile matter (wt%) |
| 81.12 | 11.13 | 7.75 |
The silicon-calcium alloy comprises the following main components in percentage by weight:
| Ca(wt％) | Si(wt％) | Al(wt％) | Fe(wt％) | C(wt％) | P(wt％) | S(wt％) |
| 30 | 55 | 1.9 | 8.5 | 0.6 | 0.02 | 0.04 |
the ferrosilicon alloy (FeSi75-B) comprises the following main components in percentage by weight:
| number plate | Si(wt％) | Mn(wt％) | Cr(wt％) | P(wt％) | S(wt％) | C(wt％) |
| FeSi75-B | 72-80 | 0.5 | 0.5 | 0.04 | 0.02 | 0.20 |
Example 1
The reduction of the schreyerite can be divided into three stages, namely a side blowing melting stage, an electric furnace preliminary reduction stage and an electric furnace deep reduction stage.
(1) Side-blown material melting stage
Mixing schreyerite and anthracite according to the mass ratio of 100:22, uniformly mixing by a cylindrical mixer, and feeding into a side-blown furnace by adopting a continuous feeding mode at the feeding speed of 610 kg/h. The side-blown gas is oxygen-enriched air with the oxygen-enriched concentration of 50-80% and the flow rate of 100-200 Nm3The oxygen concentration in the charging area is high, the flow is large, the oxygen concentration in the discharging area is low, the flow is small, the pressure of a gun mouth is 1.0MPa, and the temperature of a side-blown molten pool is controlled to be 1400-1450 ℃. The height of the side-blown spray gun is 200mm away from the furnace bottom, the flue gas of the side-blown furnace is supplemented with air in an ascending flue for secondary combustion, the heat of the high-temperature flue gas is recovered by a waste heat boiler, and the high-temperature flue gas is treated by a surface cooler, a bag-type dust remover and a tail gas desulfurization system and is discharged after reaching the standard.
All the side-blown furnaces are furnace slag, each ton of schreyerite produces about 960kg of slag, a periodic discharging mode is adopted, and the furnace slag (high-iron schreyerite slag) comprises the following main components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | Fe2O3 | MgO | TiO2 | V2O5 |
| 3.98 | 1.52 | 0.07 | 65.50 | 9.00 | 1.04 | 14.24 | 1.81 |
(2) preliminary reduction stage of electric furnace
The slag discharged from the side-blown converter enters a primary reduction electric furnace for reduction, an electrode is inserted into a slag molten pool to initiate an arc above a metal molten pool for supplying heat, the temperature of the molten pool is maintained to be about 1600 ℃, reducing agent coal powder is sprayed into the upper slag molten pool in a side-blown mode, and the coal powder consumption per ton of slag is 150 kg. After the primary reduction smelting is finished, the furnace slag (low-iron vanadium titanium slag) comprises the following main components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | MgO | TiO2 | V2O5 |
| 16.35 | 10.01 | 1.23 | 21.69 | 3.32 | 41.62 | 3.95 |
the metal phase contains more than 99 percent of iron, and the C, V content is respectively 0.05 percent and 0.22 percent, and can be further used as a steelmaking raw material. And the high-temperature slag enters a deep reduction electric furnace for deep reduction, and Fe and V in the high-temperature slag are further extracted. Each ton of primary slag is reduced in a primary electric reducing furnace to produce 520kg of metal and 320kg of secondary slag.
(3) Deep reduction stage of electric furnace
In a deep reduction electric furnace, the secondary slag is deeply reduced by using a calcium-silicon alloy, the consumption amount is 12 percent of the mass of the secondary slag, the temperature of a molten pool is maintained within the range of 1600-1650 ℃, 900kg of tailings and 200kg of metal are produced per ton of secondary slag, and the tailings and metal components are shown as follows.
The tailings comprise the following components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | MgO | TiO2 |
| 18.79 | 25.23 | 7.02 | 0.71 | 3.72 | 44.53 |
the metal comprises the following main components in percentage by mass:
| Fe | C | Si | V |
| 85.14 | 0.35 | 3.63 | 10.75 |
example 2
The treatment process flow is the same as that of the example 1, but the reducing agent is sprayed into the molten pool in a side blowing mode, the oxygen-enriched concentration is 60-90%, and the reducing agent is ferrosilicon (FeSi75-B) in the deep reduction stage.
(1) Side-blown material melting stage
The method comprises the steps of directly putting schreyerite into a high-temperature molten pool of a side-blown furnace, spraying fuel and a reducing agent into the molten pool in a side-blown powder spraying mode, wherein the feeding speed of the schreyerite is 500kg/h, the coal spraying speed is 150kg/h (air carrier gas, solid-gas ratio is 10-20 kg/kg), the oxygen enrichment concentration is 60-90%, and the flow is 150-250 m3The pressure is 0.1MPa, the temperature of a side-blown molten pool is controlled to be 1500-1550 ℃, and the distance between a spray gun and the furnace bottom is 200 mm. The flue gas of the side-blown converter is supplemented with air in the uptake flue for secondary combustion, the high-temperature flue gas recovers heat through a waste heat boiler, and is discharged after being treated by a surface cooler, a bag-type dust remover and a tail gas desulfurization system to reach the standard.
All the side-blown furnaces are furnace slag, each ton of schreyerite produces about 960kg of slag, a periodic discharging mode is adopted, and the furnace slag (high-iron schreyerite slag) comprises the following main components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | Fe2O3 | MgO | TiO2 | V2O5 |
| 5.17 | 2.90 | 0.34 | 67.02 | 7.50 | 1.10 | 14.16 | 1.81 |
(2) preliminary reduction stage of electric furnace
And (2) reducing slag discharged from a side-blown converter in a primary reduction electric furnace, inserting an electrode into a slag molten pool, arcing and supplying heat above a metal molten pool, maintaining the temperature of the molten pool within the range of 1600-1650 ℃, spraying reducing agent coal powder into the upper slag molten pool in a side-blown mode, and consuming 150kg of coal powder per ton of slag. After the primary reduction smelting is finished, the slag (low-iron vanadium titanium slag) comprises the following components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | MgO | TiO2 | V2O5 |
| 17.01 | 11.18 | 1.39 | 21.42 | 3.35 | 41.36 | 4.29 |
the metal phase contains more than 99 percent of iron, and the C, V content is respectively 0.05 percent and 0.38 percent, and can be further used as a steelmaking raw material. And the high-temperature slag enters a deep reduction electric furnace for deep reduction, and Fe and V in the high-temperature slag are further extracted. Each ton of primary slag is reduced in a primary electric reducing furnace to produce 520kg of metal and 320kg of secondary slag.
(3) Deep reduction stage of electric furnace
In a deep reduction electric furnace, ferrosilicon (FeSi75-B) is used for deep reduction of secondary slag, the consumption is 15% of the mass of the secondary slag, the temperature of a molten pool is maintained within the range of 1550-1600 ℃, each ton of secondary slag produces 880kg of tailings and 240kg of metal, and the slag and metal components are shown as follows.
The tailings comprise the following components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | MgO | TiO2 |
| 19.18 | 31.41 | 1.57 | 0.76 | 3.78 | 43.30 |
the metal comprises the following main components in percentage by mass:
| Fe | C | Si | V |
| 78.29 | 0.12 | 13.51 | 7.26 |
example 3
The processing process flow is the same as that of the embodiment 1 and 2, but the reducing agent and the fuel are natural gas, the natural gas is sprayed into a molten pool through side blowing, the oxygen-enriched concentration is 80-100%, and the reducing agent is silicon-calcium alloy in the deep reduction stage.
(1) Side-blown material melting stage
The schreyerite is directly put into a high-temperature molten pool of a side-blown converter, the fuel and the reducing agent are natural gas, and the natural gas passes through the sideThe vanadium-titanium ore is sprayed into a molten pool in a blowing mode, the feeding rate of the vanadium-titanium ore is 500kg/h, and the natural gas flow is 60-80 Nm3Per hour, the oxygen-enriched concentration is 80-100%, and the oxygen-enriched flow is 100-130 Nm3The pressure is 0.5MPa, the temperature of a side-blown molten pool is controlled to be 1500-1550 ℃, and the distance between a spray gun and the furnace bottom is 200 mm. The flue gas of the side-blown converter is supplemented with air in the uptake flue for secondary combustion, the high-temperature flue gas recovers heat through a waste heat boiler, and is discharged after being treated by a surface cooler, a bag-type dust remover and a tail gas desulfurization system to reach the standard.
All the side-blown furnaces are furnace slag, each ton of schreyerite produces about 930kg of primary slag, a periodic discharging mode is adopted, and the furnace slag (high-iron schreyerite slag) comprises the following components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | Fe2O3 | MgO | TiO2 | V2O5 |
| 4.11 | 1.57 | 0.07 | 65.19 | 11.39 | 1.08 | 14.74 | 1.85 |
(2) preliminary reduction stage of electric furnace
The slag discharged from the side-blown converter enters a primary reduction electric furnace for reduction, an electrode is inserted into a slag molten pool to initiate an arc above a metal molten pool for supplying heat, the temperature of the molten pool is maintained within the range of 1600-1650 ℃, reducing agent natural gas is sprayed into the upper slag molten pool in a side-blown mode, and 200Nm of natural gas is consumed per ton of slag3. After the primary reduction smelting is finished, the slag (low-iron vanadium titanium slag) comprises the following components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | MgO | TiO2 | V2O5 |
| 14.78 | 5.62 | 0.25 | 19.28 | 3.89 | 50.76 | 5.42 |
the metal phase contains more than 99 percent of iron, and the C, V content is respectively 0.02 percent and 0.34 percent, and can be further used as a steelmaking raw material. And the high-temperature slag enters a deep reduction electric furnace for deep reduction, and Fe and V in the high-temperature slag are further extracted. Each ton of primary slag is reduced in a primary electric reducing furnace to produce 540kg of metal and 260kg of secondary slag.
(3) Deep reduction stage of electric furnace
In a deep reduction electric furnace, the secondary slag is subjected to deep reduction by using a calcium-silicon alloy, the consumption amount is 15% of the mass of the secondary slag, the temperature of a molten pool is maintained within the range of 1550-1600 ℃, 930kg of tailings and 210kg of metal are produced per ton of secondary slag, and the slag and metal components are shown as follows.
The tailings comprise the following components in percentage by mass:
| Al2O3 | SiO2 | CaO | FeO | MgO | TiO2 |
| 16.36 | 20.38 | 7.04 | 0.59 | 4.18 | 51.45 |
the metal comprises the following main components in percentage by mass:
| Fe | C | Si | V | Ti |
| 75.49 | 0.42 | 9.21 | 14.02 | 0.64 |
unless otherwise defined, all terms used herein have the meanings commonly understood by those skilled in the art.
The described embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of the present invention, and those skilled in the art may make various other substitutions, alterations, and modifications within the scope of the present invention, and thus, the present invention is not limited to the above-described embodiments but only by the claims.
Claims (10)
1. A smelting method of vanadium titano-magnetite comprises the following steps:
carrying out melting treatment on the raw materials to obtain first iron-vanadium-titanium slag;
carrying out primary reduction on the first iron-vanadium-titanium slag to obtain second iron-vanadium-titanium slag; and
deeply reducing the second iron-vanadium-titanium slag to obtain vanadium-containing pig iron;
the raw materials comprise vanadium titano-magnetite and a reducing agent; the iron content of the second iron-vanadium-titanium slag is 5-20 wt%; in the deep reduction process, 70-95 wt% of vanadium in the vanadium titano-magnetite is reduced to metal.
2. The method of claim 1, wherein the temperature of the melt processing is 1400-1550 ℃.
3. The method according to claim 1, wherein the reducing agent used in the preliminary reduction process comprises reduced coal, and/or the temperature of the preliminary reduction process is 1450-1550 ℃.
4. The method according to claim 1, wherein the reducing agent used in the deep reduction process comprises at least two of carbon, aluminum, silicon, iron and manganese, and/or the temperature of the deep reduction process is 1600-1800 ℃.
5. The method according to claim 1, comprising subjecting the flue gas generated by the smelting process to a purification and recovery process, wherein the purification and recovery process comprises a waste heat recovery process, a cooling process, a dust removal process and a tail gas desulfurization process.
6. A smelting device of vanadium titano-magnetite, comprising:
the melting unit is used for melting the vanadium titano-magnetite to obtain first iron-vanadium-titanium slag;
the first reduction unit is used for reducing the first iron-vanadium-titanium slag to obtain second iron-vanadium-titanium slag; and
and the second reduction unit is used for reducing the second iron-vanadium-titanium slag to obtain vanadium-containing pig iron.
7. The apparatus of claim 6, wherein the melting unit comprises a side-blown furnace.
8. The device of claim 7, wherein the furnace body of the side-blown furnace is a water-cooling water jacket device and comprises a first layer, a second layer and a third layer, the first layer is a copper-steel composite water jacket, and the second layer and the third layer are both copper water jackets; and a spray gun of the side-blown converter adopts a negative pressure water cooling device.
9. The apparatus of claim 6, wherein the first reduction unit and the second reduction unit each comprise an ore-smelting electric furnace.
10. The plant according to claim 6, comprising at least one flue gas treatment unit to treat flue gas produced by a smelting process; the at least one flue gas treatment unit comprises a first flue gas treatment unit, a second flue gas treatment unit and a third flue gas treatment unit; the first flue gas treatment unit is connected with the melting unit, the second flue gas treatment unit is connected with the first reduction unit, and the third flue gas treatment unit is connected with the second reduction unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010234535.0A CN111235389B (en) | 2020-03-30 | 2020-03-30 | Smelting method and device of vanadium titano-magnetite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010234535.0A CN111235389B (en) | 2020-03-30 | 2020-03-30 | Smelting method and device of vanadium titano-magnetite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111235389A true CN111235389A (en) | 2020-06-05 |
| CN111235389B CN111235389B (en) | 2024-01-23 |
Family
ID=70875613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010234535.0A Active CN111235389B (en) | 2020-03-30 | 2020-03-30 | Smelting method and device of vanadium titano-magnetite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111235389B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676341A (en) * | 2020-07-30 | 2020-09-18 | 中国恩菲工程技术有限公司 | Smelting system and smelting method of vanadium-titanium magnetite concentrate |
| CN111705227A (en) * | 2020-06-29 | 2020-09-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting titanium slag by two-step method |
| CN111926133A (en) * | 2020-10-10 | 2020-11-13 | 中国恩菲工程技术有限公司 | Method and apparatus for smelting iron-based mineral |
| CN111961782A (en) * | 2020-07-30 | 2020-11-20 | 中国恩菲工程技术有限公司 | Method and device for reducing and smelting vanadium titano-magnetite |
| CN112795793A (en) * | 2021-03-19 | 2021-05-14 | 中国恩菲工程技术有限公司 | Comprehensive utilization method of niobite |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2492245C1 (en) * | 2012-02-28 | 2013-09-10 | ООО "Управление и Инновации" | Method of processing vanadium-bearing titanium-magnetite concentrate |
| CN104862441A (en) * | 2015-04-22 | 2015-08-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for separating and recovering iron, vanadium and titanium in vanadium-titanium magnetite |
| CN105087961A (en) * | 2015-08-10 | 2015-11-25 | 中冶南方工程技术有限公司 | Method for efficiently recycling vanadium, iron and titanium in vanadium-titanium metallized pellet through electric arc furnace |
| CN105256152A (en) * | 2015-10-28 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for quick reduction smelting of titaniferous furnace slag |
| US20170218479A1 (en) * | 2015-12-09 | 2017-08-03 | Institute Of Process Engineering, Chinese Academy Of Sciences | Method for converting and separating vanadium, titanium, and iron from vanadium-titanium-iron concentrate in one step |
| WO2018014364A1 (en) * | 2016-07-18 | 2018-01-25 | 东北大学 | Method for smelting reduction production and tempering of titaniferous mixed slag |
| CN107858502A (en) * | 2017-12-07 | 2018-03-30 | 中国恩菲工程技术有限公司 | Vanadium titano-magnetite processing method |
| CN109880956A (en) * | 2019-04-17 | 2019-06-14 | 中国恩菲工程技术有限公司 | Short route handles the smelting system of iron-based polymetallic ore material |
| CN109880955A (en) * | 2019-04-17 | 2019-06-14 | 中国恩菲工程技术有限公司 | Short route handles the method for smelting and smelting apparatus of iron-based polymetallic ore material |
| CN110129507A (en) * | 2019-06-14 | 2019-08-16 | 中国恩菲工程技术有限公司 | The method of smelting and smelting apparatus of iron-based polymetallic ore material |
| CN110484673A (en) * | 2019-09-11 | 2019-11-22 | 中南大学 | A kind of prereduction-electric furnace depth reduction-sulfuric acid process comprehensive utilization of V-Ti magnetite technique |
| CN110699554A (en) * | 2019-10-16 | 2020-01-17 | 中冶赛迪工程技术股份有限公司 | Method for producing vanadium-rich iron from vanadium-rich slag |
| CN211947176U (en) * | 2020-03-30 | 2020-11-17 | 中国恩菲工程技术有限公司 | Smelting device of vanadium titano-magnetite |
-
2020
- 2020-03-30 CN CN202010234535.0A patent/CN111235389B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2492245C1 (en) * | 2012-02-28 | 2013-09-10 | ООО "Управление и Инновации" | Method of processing vanadium-bearing titanium-magnetite concentrate |
| CN104862441A (en) * | 2015-04-22 | 2015-08-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for separating and recovering iron, vanadium and titanium in vanadium-titanium magnetite |
| CN105087961A (en) * | 2015-08-10 | 2015-11-25 | 中冶南方工程技术有限公司 | Method for efficiently recycling vanadium, iron and titanium in vanadium-titanium metallized pellet through electric arc furnace |
| CN105256152A (en) * | 2015-10-28 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for quick reduction smelting of titaniferous furnace slag |
| US20170218479A1 (en) * | 2015-12-09 | 2017-08-03 | Institute Of Process Engineering, Chinese Academy Of Sciences | Method for converting and separating vanadium, titanium, and iron from vanadium-titanium-iron concentrate in one step |
| WO2018014364A1 (en) * | 2016-07-18 | 2018-01-25 | 东北大学 | Method for smelting reduction production and tempering of titaniferous mixed slag |
| CN107858502A (en) * | 2017-12-07 | 2018-03-30 | 中国恩菲工程技术有限公司 | Vanadium titano-magnetite processing method |
| CN109880956A (en) * | 2019-04-17 | 2019-06-14 | 中国恩菲工程技术有限公司 | Short route handles the smelting system of iron-based polymetallic ore material |
| CN109880955A (en) * | 2019-04-17 | 2019-06-14 | 中国恩菲工程技术有限公司 | Short route handles the method for smelting and smelting apparatus of iron-based polymetallic ore material |
| CN110129507A (en) * | 2019-06-14 | 2019-08-16 | 中国恩菲工程技术有限公司 | The method of smelting and smelting apparatus of iron-based polymetallic ore material |
| CN110484673A (en) * | 2019-09-11 | 2019-11-22 | 中南大学 | A kind of prereduction-electric furnace depth reduction-sulfuric acid process comprehensive utilization of V-Ti magnetite technique |
| CN110699554A (en) * | 2019-10-16 | 2020-01-17 | 中冶赛迪工程技术股份有限公司 | Method for producing vanadium-rich iron from vanadium-rich slag |
| CN211947176U (en) * | 2020-03-30 | 2020-11-17 | 中国恩菲工程技术有限公司 | Smelting device of vanadium titano-magnetite |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111705227A (en) * | 2020-06-29 | 2020-09-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting titanium slag by two-step method |
| CN111676341A (en) * | 2020-07-30 | 2020-09-18 | 中国恩菲工程技术有限公司 | Smelting system and smelting method of vanadium-titanium magnetite concentrate |
| CN111961782A (en) * | 2020-07-30 | 2020-11-20 | 中国恩菲工程技术有限公司 | Method and device for reducing and smelting vanadium titano-magnetite |
| CN111961782B (en) * | 2020-07-30 | 2023-10-31 | 中国恩菲工程技术有限公司 | Vanadium titano-magnetite reduction smelting method and device |
| CN111926133A (en) * | 2020-10-10 | 2020-11-13 | 中国恩菲工程技术有限公司 | Method and apparatus for smelting iron-based mineral |
| CN112795793A (en) * | 2021-03-19 | 2021-05-14 | 中国恩菲工程技术有限公司 | Comprehensive utilization method of niobite |
| WO2022194285A1 (en) * | 2021-03-19 | 2022-09-22 | 中国恩菲工程技术有限公司 | Comprehensive utilization method for columbite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111235389B (en) | 2024-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111235389B (en) | Smelting method and device of vanadium titano-magnetite | |
| WO2022073324A1 (en) | Smelting method and device for iron-based ores | |
| CN110423854B (en) | Electric energy full-hydrogen flash reduction direct steelmaking system and process | |
| CN102051428B (en) | Iron extracting and steelmaking process for comprehensively treating copper ore tailing and nickel molten slag | |
| CN102690921B (en) | Method for comprehensively utilizing vanadium titano-magnetite by melting and separating through reduction-fuel smelting furnace of rotary hearth furnace | |
| CN102676743A (en) | Step-by-step returning recycling method of LF (Lactoferrin) refining slag in thermal state | |
| CN105838838B (en) | Method for preparing pure steel by coal gas direct reduction one-step method | |
| CN211947176U (en) | Smelting device of vanadium titano-magnetite | |
| CN102492843A (en) | Production method through combined treatment of laterite by direct current electric furnace | |
| CN105506226A (en) | Method for carrying out pre-desiliconization, pre-decarburization and pre-dephosphorization on molten iron in molten iron tank | |
| CN102041400B (en) | Process and equipment for producing high-content manganese silicon alloy from low-grade ferromanganese ore | |
| CN101914648B (en) | Method for producing low-phosphorus molten iron by utilizing oxygen-enriched top blown to carry out melting reduction on high-phosphorus iron ore | |
| CN102191348B (en) | Technological method and device for producing high-grade nickel and stainless steel by using oxidized pellet method | |
| CN100529110C (en) | Ironmaking and steelmaking | |
| CN111394588A (en) | Method and device for directly producing iron-vanadium-chromium alloy by treating vanadium extraction tailings | |
| CN103667738A (en) | Oxygen-enriched side-blowing dual-area bath smelting furnace and method for smelting copper matte by using copper-containing complex material | |
| CN116162804A (en) | Method for producing high nickel matte and molten iron from ferronickel | |
| CN102046817A (en) | Method for manufacturing pig iron | |
| CN102127610A (en) | Ironmaking equipment and process for direct smelting reduction of iron ore | |
| CN102181776A (en) | Technique and device for producing high-grade nickel and stainless steel by reduction pelletization | |
| CN202063976U (en) | Equipment for producing high manganese-silicon by low-grade ferromanganese ore | |
| WO2015041834A2 (en) | Steel production in a coke dry quenching system | |
| KR101607254B1 (en) | Combiner Ironmaking facilities | |
| CN113789421A (en) | Comprehensive recycling system and method for fly ash of continuous injection electric furnace entering furnace | |
| CN110724839A (en) | Preparation method of manganese-rich slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |