CN109943714A - The smelting process and smelting system of vanadium titano-magnetite - Google Patents
The smelting process and smelting system of vanadium titano-magnetite Download PDFInfo
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- CN109943714A CN109943714A CN201910169070.2A CN201910169070A CN109943714A CN 109943714 A CN109943714 A CN 109943714A CN 201910169070 A CN201910169070 A CN 201910169070A CN 109943714 A CN109943714 A CN 109943714A
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Abstract
The invention discloses a kind of smelting process of vanadium titano-magnetite and smelting system, which first by powdery vanadium titano-magnetite, semi-coke powder and binder mixing granulation, obtains particulate matter；Prereduction is carried out to particulate matter again, the particulate matter after obtaining prereduction；Semi-coke powder and oxygen-enriched air are finally sprayed into the particulate matter after prereduction, are carried out arc smelting until forming molten bath, using the burning of semi-coke powder, are carried out bath smelting, obtain titanium slag and vanadium-bearing hot metal.The technique is while realizing metal integrated smelting, using arc smelting and bath smelting cooperate by vanadium titano-magnetite vanadium, titanium selective reduction and be enriched with, high price ferriferous oxide is reduced into iron, and the reduction with carbon regulation iron and vanadium is carried out during arc smelting, achieve the purpose that precise restoration, selective reduction, recycle vanadium and titanium in vanadium titano-magnetite adequately, to solve the problems, such as that the recovery utilization rate of titanium when the prior art smelts vanadium titano-magnetite is low.
Description
Technical field
The invention belongs to iron ore technical field of smelting, and in particular to a kind of smelting process of vanadium titano-magnetite and smelt system
System.
Background technique
Panzhihua Region possesses v-ti magnetite ore resources very rich, which belongs to high-titanium type vanadium-titanium magnetite, because
Contain higher TiO2, blast furnace smelting technology makes a big difference with common mine, easily occur in smelting process clinker cross reduction,
Phenomena such as viscosity increases, slag iron separation is difficult, iron loss is high, seriously affects the smelting technique index of blast furnace.
Currently, the technique of the vanadium titano-magnetite of Traditional Industrialization processing both at home and abroad mainly uses sodium vanadium extraction-rotary kiln-electricity
Oven process smelting process.There are South Africa Granville iron company, New Zealand's steel using the enterprise of this process vanadium titano-magnetite
Company etc..Vanadium titano-magnetite concentrate and sodium salt are mixed and carry out pelletizing by the technique, and the then oxidizing roasting in rotary kiln makes vanadium titanium
Barium oxide in magnetite concentrate is converted to soluble vanadium acid sodium in roasting process, so that sodium vanadate is dissolved in water by water logging
In, realize the separation of vanadium and ferrotitanium.Residual ball by water logging is re-fed into rotary kiln and is restored, and goes back original product and is sent into molten point of electric furnace
To obtain molten iron and titanium slag, the separation of titanium and iron is realized.
In above-mentioned technology, with TiO2It counts, content of the titanium in vanadium titano-magnetite in electroslag reaches 30% or so, so
The viscosity that high content will cause electroslag increases, and the separation in turn resulting in molten iron and titanium slag is more difficult.Therefore, in above-mentioned technology
The recovery utilization rate of titanium is to be improved in vanadium titano-magnetite.
Summary of the invention
For this purpose, to be solved by this invention is that there are the recovery utilization rate of titanium is low for the smelting technique of existing vanadium titano-magnetite
Defect, and then the smelting process and smelting system of a kind of vanadium titano-magnetite are provided.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
The smelting process of vanadium titano-magnetite provided by the present invention, includes the following steps:
By powdery vanadium titano-magnetite, semi-coke powder and binder mixing granulation, particulate matter is obtained；
Prereduction is carried out to particulate matter, the particulate matter after obtaining prereduction；
Semi-coke powder and oxygen-enriched air are sprayed into the particulate matter after prereduction, carry out arc smelting until formation molten bath, benefit
With the burning of semi-coke powder, bath smelting is carried out, titanium slag and vanadium-bearing hot metal are obtained.
Further, the mass ratio of powdery vanadium titano-magnetite, semi-coke powder and binder is (4-5) in the particulate matter: 2:
(2-4)；
The temperature of the prereduction is 1000~1200 DEG C, the time is 120~240min.
Further, the binder is in clay, kaolin, attapulgite, bentonite and sodium carboxymethylcellulose
It is at least one；
Carbon content 70-80wt% in the semi-coke powder.
It further, further include that the particulate matter is dried to 0.5-1.5h at 95-110 DEG C before the prereduction
The step of to its water content < 2wt%.
Further, when semi-coke powder being added into the particulate matter after prereduction, the matter of particle and semi-coke powder after prereduction
Amount is than being (4-5): 2；
The temperature of the bath smelting is 1400-1550 DEG C.
Further, further include the steps that lime stone, the lime stone and powdery are added in the particulate matter after prereduction
The mass ratio of vanadium titano-magnetite is (1-2): 5；
The diameter of the particulate matter is 6-14mm；
The oxygen-enriched air refers to the volume fraction of oxygen 25% or more.
It further, further include that vanadium-bearing hot metal is sent into converter to carry out vanadium extraction by converter blowing, isolated vanadium slag and molten iron；Molten iron
Become slag iron after cooling.
Further include being sent into titanium slag in enrichment furnace to be enriched with, obtains titanium slag after hot slag and enrichment, hot slag is for making
Standby artificial cast stone, titanium slag is for producing titanium products after enrichment；
It further include the high-temperature flue gas recycled in arc smelting, bath smelting, converter and enrichment furnace, and the high-temperature flue gas is sent
Enter arc smelting, in bath smelting as concurrent heating, or the high-temperature flue gas is successively carried out heat recovery, sedimentation, dedusting and
It is emptied after desulphurization denitration.
In addition, the present invention also provides a kind of smelting system of vanadium titano-magnetite, the prereduction including being sequentially communicated setting
Device and melting-depth go back original system, and it includes bath smelting-electric arc furnaces that the melting-depth, which goes back original system, the bath smelting-electricity
Arc furnace includes,
Furnace body and be set to the furnace body top bell, when the bell is for closed state, in the furnace body
Portion forms sealing inner cavity, and along the direction on the top far from the furnace body, and the lower part of the furnace body includes being sequentially communicated setting
Inversed taper platform and spheroid, the inversed taper platform and spheroid, which are formed, is suitable for material in the molten bath of wherein melting；
Electrode is set on the bell, and the discharge end of the electrode protrudes into the furnace interior far from the bell.
Further, reducing material import is arranged in the top of the bath smelting-electric arc furnaces, and lower part setting vanadium-bearing hot metal goes out
Mouthful, titanium slag outlet is arranged in bottom, and the second gas exit is arranged in top；
The prereduction device is rotary kiln, and v-ti magnetite import, reducing material outlet are respectively set on the rotary kiln
With the first gas exit, the reducing material outlet and the reducing material inlet communication.
Further, it further includes converter that the melting-depth, which goes back original system, and vanadium-bearing hot metal is respectively set in the top of the converter
Vanadium slag outlet and half steel outlet is respectively set in import and third gas exit, lower part, and the vanadium-bearing hot metal import contains vanadium with described
Molten iron outlet；
The smelting system further includes enrichment furnace, and the enrichment furnace is connected with the titanium slag outlet, by described
Enrichment furnace is enriched with titanium slag, and titanium slag after isolated hot slag and enrichment.
Further, further include,
Gas recovery system, waste heat boiler and sedimentation device including being sequentially communicated setting, the waste heat boiler respectively with
First gas exit, the second gas exit are connected to third gas exit, with recycle and settle the bath smelting-electric arc furnaces,
The high-temperature flue gas generated in converter and enrichment furnace；
Dust-extraction unit is connected to the sedimentation device, to be dusted processing to the metal oxide in high-temperature flue gas；
Desulfuring and denitrifying apparatus is connected to the dust-extraction unit, to carry out desulphurization denitration to the high-temperature flue gas after dust removal process
Processing.
Further, the waste heat boiler includes the first waste heat boiler, the second waste heat boiler and third waste heat boiler, described
First waste heat boiler is connected to the first gas exit, and second waste heat boiler is connected to the second gas exit, more than the third
Heat boiler is connected to the third gas exit；
The sedimentation device includes the first sedimentation device, the second sedimentation device and third sedimentation device, first sedimentation
Device is connected to the first waste heat boiler, and second sedimentation device is connected to the second waste heat boiler, the third sedimentation device with
The third waste heat boiler connection；
The dust-extraction unit includes the first dust-extraction unit, the second dust-extraction unit and third dust-extraction unit, first dedusting
Device is connected to the first sedimentation device, and second dust-extraction unit is connected to the second sedimentation device, the third dust-extraction unit with
The third sedimentation device connection.
Compared with prior art, the invention has the following beneficial effects:
(1) smelting process of vanadium titano-magnetite provided by the present invention, first by powdery vanadium titano-magnetite, semi-coke powder and bonding
Agent mixing granulation, obtains particulate matter；Prereduction is carried out to particulate matter again, the particulate matter after obtaining prereduction；Finally to prereduction
Semi-coke powder and oxygen-enriched air are sprayed into particulate matter afterwards, carry out arc smelting until forming molten bath, using the burning of semi-coke powder, into
Row bath smelting, obtains titanium slag and vanadium-bearing hot metal.The technique using arc smelting and melts while realizing metal integrated smelting
Pond melting cooperate by vanadium titano-magnetite vanadium, titanium selective reduction and be enriched with, high price ferriferous oxide is reduced into iron, and
And it carries out regulating and controlling the reduction of iron and vanadium with carbon, achieving the purpose that precise restoration, selective reduction, make vanadium during arc smelting
Vanadium and titanium in titanomagnetite are adequately recycled, to solve the recycling of titanium when the prior art smelts vanadium titano-magnetite
The low problem of utilization rate.The advantage that entire process flow has structure simple, energy-saving, environmentally protective.
(2) smelting process of vanadium titano-magnetite provided by the present invention, by control particulate matter in powdery vanadium titano-magnetite,
First the temperature and time of the mass ratio and prereduction of semi-coke powder and binder is convenient for subsequent arc smelting, second can be improved
Vanadium, the selective reduction of titanium and concentration effect.By the way that the lime stone of extra fine quality is added into the particulate matter after prereduction, it is convenient for
Slag iron separation.By controlling the temperature of the mild bath smelting of arc smelting, the high-melting-point substances such as TiC, TiN can be prevented.
(3) smelting system of vanadium titano-magnetite provided by the present invention, including be sequentially communicated setting prereduction device and
Melting-depth goes back original system, and it includes bath smelting-electric arc furnaces that melting-depth, which goes back original system, bath smelting-electric arc furnaces include furnace body and
It is set to the bell on the top of furnace body, when bell is for closed state, furnace interior forms sealing inner cavity, and along far from described
On the direction on the top of furnace body, the lower part of furnace body includes the inversed taper platform and spheroid for being sequentially communicated setting, inversed taper platform and spheroid
It is formed and is suitable for material in the molten bath of wherein melting；Electrode is set on the bell, and the discharge end of the electrode is far from the furnace
Lid protrudes into the furnace interior.The smelting system goes back original system and forms multi-joint furnace group system by prereduction device and melting-depth,
The separate operations of material smelting process are realized, comprehensive harmless treatment can be carried out to containing metal resource, to a variety of gold
Belong to element effectively to be recycled, while the material range of the system production is wide, working of a furnace continuous-stable, energy consumption cost significantly drop
It is low.
(4) bath smelting arc furnace system energy resource structure of the invention is more flexible, can be mostly used in the area of electric energy abundance
Electricity uses semi-coke (coal) less；In the insufficient area of electric energy, oxygen and semi-coke (coal) can be sprayed as the energy, few electricity consumption more.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow chart of the smelting process of vanadium titano-magnetite in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the smelting system of vanadium titano-magnetite in the embodiment of the present invention；
Fig. 3 is bath smelting-electric arc furnaces structural schematic diagram in the embodiment of the present invention；
Description of symbols:
1- drying device；2- prereduction device；3- bath smelting-electric arc furnaces；4- converter；5- is enriched with furnace；6- waste heat boiler；
The first waste heat boiler of 6-1-；The second waste heat boiler of 6-2-；6-3- third waste heat boiler；The 4th waste heat boiler of 6-4-；7- dedusting dress
It sets；8- desulfuring and denitrifying apparatus.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
The smelting process for present embodiments providing a kind of vanadium titano-magnetite, includes the following steps:
(1) v-ti magnetite concentrate (ingredient: TFe 51.56%, TiO of 1000kg is taken212.73%, V2O50.564%),
The sodium carboxymethylcellulose mixing of semi-coke powder (wherein carbon content 75wt%) of the water content of 400kg lower than 10wt% and 600kg
It is granulated, the particulate matter for the pelletizing shape that diameter is 10mm is made, dries 1h at 100 DEG C in drying machine, makes the aqueous of particulate matter
Amount < 2wt%；
(2) particulate matter after drying is uniformly layered on to the bottom of rotary kiln by material distributing machine, thickness 4cm passes through semi-coke powder
Combustion heating to 1100 DEG C, reductase 12 00min, the degree of metalization of particulate matter reaches 70% or more after prereduction；
(3) semi-coke powder and agstone are sprayed into the particulate matter after prereduction, wherein the particle and semi-coke after prereduction
The mass ratio of powder is 4.5:2, and the mass ratio of lime stone and powdery vanadium titano-magnetite is 1.5:5, is then added to by feed inlet
Melting-depth is gone back in original system, and temperature when metallized charge enters in bath smelting-electric arc furnaces is 800 DEG C, sprays into oxygen-enriched air
(volume fraction of oxygen is 25% or more) lifts electricity after carrying out arc smelting until forming molten bath using electrode heat release at the beginning
Pole provides heat followed by the combustion heat release of semi-coke powder, controls bath smelting-electric arc in-furnace temperature at 1500 DEG C, melted
Pond melting, semi-coke powder a part is burnt as exothermic agent provides heat, and another part is as the Fe in reducing agent reduced iron concentrate
And V, Ti are not reduced into slag, obtain 50 titanium slag of high temperature and vanadium-bearing hot metal；
(4) vanadium-bearing hot metal is sent into converter and carries out vanadium extraction by converter blowing, is passed through oxygen under conditions of 1300 DEG C, and vanadium is aoxidized and is entered
In slag, isolated vanadium slag and molten iron become slag iron (namely half steel) after molten iron is cooling；The content of titanium is in 50 titanium slag of high temperature
50 titanium slag of high temperature is directly entered hypergravity enrichment furnace at this time by 47.63wt%, titanium is enriched in hypergravity enrichment furnace, thus raw
At 70 titanium slags, remaining hot slag is directly used in manufacture of intraocular cast stone, and artificial cast stone, which is used to prepare antibacterial purifying, dazzles brilliant plate；
(5) high temperature in Steelmaking, in recycling arc smelting, bath smelting, converter and hypergravity enrichment furnace
Flue gas, the high-temperature flue gas are the CO gas at 1600 DEG C, and the high-temperature flue gas is sent into arc smelting, conduct in bath smelting
Iron ore concentrate is melted in concurrent heating, is recycled.After tested, the rate of recovery of titanium is 99.5% or more in v-ti magnetite concentrate, the recycling of iron
Rate is 99.0% or more, and the rate of recovery of vanadium is 99.7% or more.
Embodiment 2
A kind of smelting process of vanadium titano-magnetite is present embodiments provided, as shown in Figure 1, including the following steps:
(1) v-ti magnetite concentrate (ingredient: TFe 51.56%, TiO of 800kg is taken212.73%, V2O50.564%),
The sodium carboxymethylcellulose mixing of semi-coke powder (wherein carbon content 75wt%) of the water content of 400kg lower than 10wt% and 400kg
It is granulated, the particulate matter for the pelletizing shape that diameter is 6mm is made, dries 1.5h at 95 DEG C in drying machine, makes the aqueous of particulate matter
Amount < 2wt%；
(2) particulate matter after drying is uniformly layered on to the bottom of rotary kiln by material distributing machine, thickness 5cm passes through semi-coke powder
Combustion heating to 1000 DEG C, reductase 12 40min, the degree of metalization of particulate matter reaches 70% or more after prereduction；
(3) semi-coke powder and agstone are sprayed into the particulate matter after prereduction, wherein the particle and semi-coke after prereduction
The mass ratio of powder is 4:2, and the mass ratio of lime stone and powdery vanadium titano-magnetite is 2:5, is then added to melting-by feed inlet
It goes back in original system deeply, temperature when metallized charge enters in bath smelting-electric arc furnaces is 800 DEG C, sprays into oxygen-enriched air (oxygen
Volume fraction 25% or more), at the beginning using electrode heat release carry out arc smelting until formed molten bath after lift electrode, connect
Provide heat using the combustion heat release of semi-coke powder, control bath smelting-electric arc in-furnace temperature at 1400 DEG C, it is molten to carry out molten bath
Refining, semi-coke powder a part as exothermic agent burning offer heat, another part as the Fe and V in reducing agent reduced iron concentrate,
Ti is not reduced into slag, obtains 50 titanium slag of high temperature and vanadium-bearing hot metal；
(4) vanadium-bearing hot metal is sent into converter and carries out vanadium extraction by converter blowing, is passed through oxygen under conditions of 1450 DEG C, and vanadium is aoxidized and is entered
In slag, isolated vanadium slag and molten iron become slag iron (namely half steel) after molten iron is cooling；50 titanium slag of high temperature is directly entered at this time
Hypergravity is enriched with furnace, is enriched with titanium in hypergravity enrichment furnace, to generate 70 titanium slags, remaining hot slag is directly used in manufacturer
Work cast stone；
(5) high temperature in Steelmaking, in recycling arc smelting, bath smelting, converter and hypergravity enrichment furnace
Flue gas, and emptied after successively carrying out heat recovery, sedimentation, dedusting and desulphurization denitration to the high-temperature flue gas.After tested, vanadium titanium magnetic
The rate of recovery of titanium is 99.5% or more in iron ore concentrate, and the rate of recovery of iron is 99.0% or more, and the rate of recovery of vanadium is 99.7% or more.
Embodiment 3
The smelting process for present embodiments providing a kind of vanadium titano-magnetite, includes the following steps:
(1) v-ti magnetite concentrate (ingredient: TFe 51.56%, TiO of 900kg is taken212.73%, V2O50.564%),
The sodium carboxymethylcellulose mixing of semi-coke powder (wherein carbon content 75wt%) of the water content of 400kg lower than 10wt% and 800kg
It is granulated, the particulate matter for the pelletizing shape that diameter is 14mm is made, dries 0.5h at 110 DEG C in drying machine, makes containing for particulate matter
Water < 2wt%；
(2) particulate matter after drying is uniformly layered on to the bottom of rotary kiln by material distributing machine, thickness 3cm passes through semi-coke powder
Combustion heating to 1200 DEG C, restore 120min, the degree of metalization of particulate matter reaches 70% or more after prereduction；
(3) semi-coke powder and agstone are sprayed into the particulate matter after prereduction, wherein the particle and semi-coke after prereduction
The mass ratio of powder is 5:2, and the mass ratio of lime stone and powdery vanadium titano-magnetite is 1:5, is then added to melting-by feed inlet
It goes back in original system deeply, temperature when metallized charge enters in bath smelting-electric arc furnaces is 800 DEG C, sprays into oxygen-enriched air (oxygen
Volume fraction 25% or more), at the beginning using electrode heat release carry out arc smelting until formed molten bath after lift electrode, connect
Provide heat using the combustion heat release of semi-coke powder, control bath smelting-electric arc in-furnace temperature at 1550 DEG C, it is molten to carry out molten bath
Refining, semi-coke powder a part as exothermic agent burning offer heat, another part as the Fe and V in reducing agent reduced iron concentrate,
Ti is not reduced into slag, obtains 50 titanium slag of high temperature and vanadium-bearing hot metal；
(4) vanadium-bearing hot metal is sent into converter and carries out vanadium extraction by converter blowing, is passed through oxygen under conditions of 1200 DEG C, and vanadium is aoxidized and is entered
In slag, isolated vanadium slag and molten iron become slag iron (namely half steel) after molten iron is cooling；50 titanium slag of high temperature is directly entered overweight
StrongmenGroup collects furnace, is enriched with titanium in hypergravity enrichment furnace, to generate 70 titanium slags, remaining hot slag is directly used in manufacture of intraocular casting
Stone；
(5) high temperature in Steelmaking, in recycling arc smelting, bath smelting, converter and hypergravity enrichment furnace
Flue gas, and emptied after successively carrying out heat recovery, sedimentation, dedusting and desulphurization denitration to the high-temperature flue gas.After tested, vanadium titanium magnetic
The rate of recovery of titanium is 99.5% or more in iron ore concentrate, and the rate of recovery of iron is 99.0% or more, and the rate of recovery of vanadium is 99.7% or more.
Embodiment 4
A kind of smelting system of vanadium titano-magnetite is present embodiments provided, as shown in Fig. 2, including being sequentially communicated doing for setting
Dry device 1, prereduction device 2 and melting-depth go back original system, for example, drying device 1 is drying machine, prereduction device 2 is revolution
Kiln, it includes bath smelting-electric arc furnaces 3 that melting-depth, which goes back original system, and bath smelting-electric arc furnaces 3 includes,
Furnace body and be set to furnace body top bell, when bell is for closed state, furnace interior formed sealing in
Chamber, and along the direction on the top far from furnace body, the lower part of furnace body includes the inversed taper platform and spheroid for being sequentially communicated setting, back taper
Platform and spheroid, which are formed, is suitable for material in the molten bath of wherein melting；Specifically, as shown in figure 3, the radius of curvature R of spheroid with fall
The length ratio of the width D of frustum big opening end is (1.5-1.8): 1, the height h of spheroid2With the width D of inversed taper platform big opening end
Length ratio is (0.15-0.2): 1, the height h of spheroid2With the height h of inversed taper platform1Length ratio be 1:(4-6), in this way setting
Melting effect of the metal charge in bath smelting-electric arc furnaces 3 can be improved, the separating effect for improving metal is ultimately facilitated；
Electrode is set on bell, and the discharge end of electrode protrudes into the furnace interior far from bell.
In above-mentioned apparatus, original system is gone back by prereduction device 2 and melting-depth and forms multi-joint furnace group system, realizes object
Expect smelting process separate operations, can it is comprehensive to containing metal resource carry out harmless treatment, to Determination of multiple metal elements into
Row effectively recycling, while the material range of the system production is wide, working of a furnace continuous-stable, energy consumption cost are greatly lowered.
Further, reducing material import is arranged in the top of bath smelting-electric arc furnaces 3, and lower part is arranged vanadium-bearing hot metal and exports,
Titanium slag outlet is arranged in bottom, and the second gas exit is arranged in top；
V-ti magnetite import, reducing material outlet and the first gas exit, reducing material outlet are respectively set on rotary kiln
With reducing material inlet communication.
Further, it further includes converter 4 that melting-depth, which goes back original system, the top of converter 4 be respectively set vanadium-bearing hot metal import and
Vanadium slag outlet and half steel outlet, vanadium-bearing hot metal import and vanadium-bearing hot metal outlet is respectively set in third gas exit, lower part；
Smelting system further include enrichment furnace 5, enrichment furnace 5 be connected with titanium slag outlet, with by be enriched with furnace 5 to titanium slag into
Row enrichment, and titanium slag after isolated hot slag and enrichment.
More specifically, sidewall of the furnace body bottom is provided at least one first import for importing hot gas into furnace body,
Each first import is connected with an air inlet pipe, and each air inlet pipe is connected with heat patching device；Bottom of furnace body is provided with for arranging
The first outlet of liquid and the second outlet for discharging clinker out；First outlet is connected with outlet tube, second outlet connection
There is slag-discharge pipe；Third for exporting flue gas exports, and third exports the side wall for being set to furnace body, and third outlet is connected with exhaust
Pipe, exhaust pipe are connect with exhaust apparatus；Feed inlet is set on bell, capping is provided on feed inlet.
Preferably, outlet tube is concordant with furnace body inner chamber bottom surface, and first outlet is located at the lower section of second outlet.
It further, further include gas recovery system, waste heat boiler 6 and sedimentation device including being sequentially communicated setting are remaining
Heat boiler 6 is connected to the first gas exit, the second gas exit and third gas exit respectively, molten to recycle and settle molten bath
The high-temperature flue gas generated in refining-electric arc furnaces 3, converter 4 and enrichment furnace 5；
Dust-extraction unit 7, is connected to sedimentation device, to be dusted processing to the metal oxide in high-temperature flue gas；
Desulfuring and denitrifying apparatus 8, is connected to dust-extraction unit, to carry out at desulphurization denitration to the high-temperature flue gas after dust removal process
Reason.
Preferably, waste heat boiler includes the first waste heat boiler 6-1, the second waste heat boiler 6-2 and third waste heat boiler 6-3,
First waste heat boiler 6-1 is connected to the first gas exit, and the second waste heat boiler 6-2 is connected to the second gas exit, third waste heat
Boiler 6-3 is connected to third gas exit；
Sedimentation device includes the first sedimentation device, the second sedimentation device and third sedimentation device, the first sedimentation device and the
One waste heat boiler 6-1 connection, the second sedimentation device are connected to the second waste heat boiler 6-2, third sedimentation device and third waste heat pot
Furnace 6-3 connection；
Dust-extraction unit 7 includes the first dust-extraction unit, the second dust-extraction unit and third dust-extraction unit, the first dust-extraction unit and the
The connection of one sedimentation device, the second dust-extraction unit are connected to the second sedimentation device, and third dust-extraction unit is connected to third sedimentation device.
It further, further include sequentially connected crusher, batch mixer and dryer, v-ti magnetite concentrate is crushed,
Mixing and drying.
The ability of regulation and control of the device is strong, and furnace atmosphere and bath properties are controllable, realizes also controllable while selection reaction
Reaction；Big kinetic energy stirring, melt rotation optimize mass-and heat-transfer transmission conditions, and high production efficiency, efficiency are high, at low cost；For
Property processing vanadium titano-magnetite, realize the enrichment of titanium high-grade, the rate of recovery is high；With semi-coke (cheap fuel), oxygen, electric energy for main energy
Source reaches energy-saving and efficient purpose；The clinker of output, which can meet, directly prepares artificial cast stone material condition, can be complete
Accomplish no scorification processing, reaches maximally utilizing for resource " turning waste into wealth ".
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of smelting process of vanadium titano-magnetite, includes the following steps:
By powdery vanadium titano-magnetite, semi-coke powder and binder mixing granulation, particulate matter is obtained；
Prereduction is carried out to particulate matter, the particulate matter after obtaining prereduction；
Semi-coke powder and oxygen-enriched air are sprayed into the particulate matter after prereduction, are carried out arc smelting until forming molten bath, are utilized orchid
The burning of powdered carbon carries out bath smelting, obtains titanium slag and vanadium-bearing hot metal.
2. smelting process according to claim 1, which is characterized in that powdery vanadium titano-magnetite, semi-coke in the particulate matter
The mass ratio of powder and binder is (4-5): 2:(2-4)；
The temperature of the prereduction is 1000~1200 DEG C, the time is 120~240min.
3. smelting process according to claim 1 or 2, which is characterized in that semi-coke is added into the particulate matter after prereduction
When powder, the mass ratio of particle and semi-coke powder after prereduction is (4-5): 2；
The temperature of the bath smelting is 1400-1550 DEG C.
4. smelting process according to claim 3, which is characterized in that further include that stone is added in the particulate matter after prereduction
The mass ratio of the step of lime stone, the lime stone and powdery vanadium titano-magnetite is (1-2): 5；
The diameter of the particulate matter is 6-14mm；
The oxygen-enriched air refers to the volume fraction of oxygen 25% or more.
5. smelting process described in any one of -4 according to claim 1, which is characterized in that further include being sent into vanadium-bearing hot metal to turn
Furnace carries out vanadium extraction by converter blowing, isolated vanadium slag and molten iron；
Further include being sent into titanium slag in enrichment furnace to be enriched with, obtains titanium slag after hot slag and enrichment, hot slag is used to prepare people
Cast stone is made, titanium slag is for producing titanium products after enrichment；
It further include the high-temperature flue gas recycled in arc smelting, bath smelting, converter and enrichment furnace, and the high-temperature flue gas is sent into electricity
Arc is smelted, is used as concurrent heating in bath smelting, or successively carries out heat recovery, sedimentation, dedusting and desulfurization to the high-temperature flue gas
It is emptied after denitration.
6. a kind of smelting system of vanadium titano-magnetite, which is characterized in that prereduction device and melting-including being sequentially communicated setting
Original system is gone back deeply, it includes bath smelting-electric arc furnaces that the melting-depth, which goes back original system, and the bath smelting-electric arc furnaces includes,
Furnace body and be set to the furnace body top bell, when the bell is for closed state, the furnace interior shape
At sealing inner cavity, and along the direction on the top far from the furnace body, the lower part of the furnace body includes being sequentially communicated falling for setting
Frustum and spheroid, the inversed taper platform and spheroid, which are formed, is suitable for material in the molten bath of wherein melting；
Electrode is set on the bell, and the discharge end of the electrode protrudes into the furnace interior far from the bell.
7. smelting system according to claim 6, which is characterized in that the top setting of the bath smelting-electric arc furnaces is also
Raw material import, lower part are arranged vanadium-bearing hot metal and export, and titanium slag outlet is arranged in bottom, and the second gas exit is arranged in top；
The prereduction device is rotary kiln, and v-ti magnetite import, reducing material outlet and the are respectively set on the rotary kiln
One gas exit, the reducing material outlet and the reducing material inlet communication.
8. smelting system according to claim 7, which is characterized in that it further includes converter that the melting-depth, which goes back original system, institute
Vanadium-bearing hot metal import and third gas exit is respectively set in the top for stating converter, and vanadium slag outlet is respectively set in lower part and half steel goes out
Mouthful, the vanadium-bearing hot metal import and the vanadium-bearing hot metal outlet；
The smelting system further includes enrichment furnace, and the enrichment furnace is connected with the titanium slag outlet, to pass through the enrichment
Furnace is enriched with titanium slag, and titanium slag after isolated hot slag and enrichment.
9. smelting system according to claim 8, which is characterized in that further include,
Gas recovery system, waste heat boiler and sedimentation device including being sequentially communicated setting, the waste heat boiler is respectively with first
Gas exit, the second gas exit are connected to third gas exit, to recycle and settle the bath smelting-electric arc furnaces, converter
With the high-temperature flue gas generated in enrichment furnace；
Dust-extraction unit is connected to the sedimentation device, to be dusted processing to the metal oxide in high-temperature flue gas；
Desulfuring and denitrifying apparatus is connected to the dust-extraction unit, to carry out desulphurization denitration processing to the high-temperature flue gas after dust removal process.
10. smelting system according to claim 9, which is characterized in that the waste heat boiler includes the first waste heat boiler, the
Two waste heat boilers and third waste heat boiler, first waste heat boiler are connected to the first gas exit, second waste heat boiler
It is connected to the second gas exit, the third waste heat boiler is connected to the third gas exit；
The sedimentation device includes the first sedimentation device, the second sedimentation device and third sedimentation device, first sedimentation device
Be connected to the first waste heat boiler, second sedimentation device is connected to the second waste heat boiler, the third sedimentation device with it is described
The connection of third waste heat boiler；
The dust-extraction unit includes the first dust-extraction unit, the second dust-extraction unit and third dust-extraction unit, first dust-extraction unit
Be connected to the first sedimentation device, second dust-extraction unit is connected to the second sedimentation device, the third dust-extraction unit with it is described
The connection of third sedimentation device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174423A (en) * | 2020-02-05 | 2020-05-19 | 鞍钢集团工程技术有限公司 | High-temperature oxygen-enriched heating furnace for extracting vanadium and titanium from vanadium-titanium slag and operation method thereof |
| CN112456550A (en) * | 2020-11-09 | 2021-03-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing titanium slag with high acidolysis rate |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619371A (en) * | 2008-07-02 | 2010-01-06 | 四川龙蟒集团有限责任公司 | Method for recovering vanadium, titanium and iron from vanadium titanium magnetite |
| CN102620571A (en) * | 2012-04-10 | 2012-08-01 | 上海瑞恩能源投资有限公司 | Waste-heat power generating system in smelting process of rotary kiln and ore-smelting electric furnace |
| CN104651561A (en) * | 2015-02-13 | 2015-05-27 | 朝阳金工钒钛科技有限公司 | Method for smelting iron ore concentrate of vanadium-titanium magnetite in non-blast furnace |
| WO2017202119A1 (en) * | 2016-05-23 | 2017-11-30 | 中国恩菲工程技术有限公司 | Reduction smelting system and reduction smelting method for vanadium-titanium magnetite ore or ilmenite |
| WO2018090867A1 (en) * | 2016-11-21 | 2018-05-24 | 中国恩菲工程技术有限公司 | System and method for preparing titanium slag |
| CN109295316A (en) * | 2018-12-05 | 2019-02-01 | 盐边县向阳钒业有限公司 | The recovery process of vanadium in vanadium containing steel slag |
| CN210104036U (en) * | 2019-03-06 | 2020-02-21 | 赛能杰高新技术股份有限公司 | Smelting system of vanadium titano-magnetite |
-
2019
- 2019-03-06 CN CN201910169070.2A patent/CN109943714A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619371A (en) * | 2008-07-02 | 2010-01-06 | 四川龙蟒集团有限责任公司 | Method for recovering vanadium, titanium and iron from vanadium titanium magnetite |
| CN102620571A (en) * | 2012-04-10 | 2012-08-01 | 上海瑞恩能源投资有限公司 | Waste-heat power generating system in smelting process of rotary kiln and ore-smelting electric furnace |
| CN104651561A (en) * | 2015-02-13 | 2015-05-27 | 朝阳金工钒钛科技有限公司 | Method for smelting iron ore concentrate of vanadium-titanium magnetite in non-blast furnace |
| WO2017202119A1 (en) * | 2016-05-23 | 2017-11-30 | 中国恩菲工程技术有限公司 | Reduction smelting system and reduction smelting method for vanadium-titanium magnetite ore or ilmenite |
| WO2018090867A1 (en) * | 2016-11-21 | 2018-05-24 | 中国恩菲工程技术有限公司 | System and method for preparing titanium slag |
| CN109295316A (en) * | 2018-12-05 | 2019-02-01 | 盐边县向阳钒业有限公司 | The recovery process of vanadium in vanadium containing steel slag |
| CN210104036U (en) * | 2019-03-06 | 2020-02-21 | 赛能杰高新技术股份有限公司 | Smelting system of vanadium titano-magnetite |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174423A (en) * | 2020-02-05 | 2020-05-19 | 鞍钢集团工程技术有限公司 | High-temperature oxygen-enriched heating furnace for extracting vanadium and titanium from vanadium-titanium slag and operation method thereof |
| CN112456550A (en) * | 2020-11-09 | 2021-03-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing titanium slag with high acidolysis rate |
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