CN206828601U - The system for handling rich vanadium titanium material - Google Patents

The system for handling rich vanadium titanium material Download PDF

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Publication number
CN206828601U
CN206828601U CN201720599519.5U CN201720599519U CN206828601U CN 206828601 U CN206828601 U CN 206828601U CN 201720599519 U CN201720599519 U CN 201720599519U CN 206828601 U CN206828601 U CN 206828601U
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gas
roasting
outlet
temperature region
rich
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唐敬坤
员晓
邓君
冯鲁兴
吴道洪
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Jiangsu Province Metallurgical Design Institute Co Ltd
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Jiangsu Province Metallurgical Design Institute Co Ltd
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Abstract

The utility model discloses a kind of system for handling rich vanadium titanium material, including：Mixing device, there is rich vanadium titanium material entrance, sodium agent entrance, water inlet and mixed material outlet；Shaped device, there is mixed material entrance and the outlet of mixing pelletizing；Heat accumulating type rotating bed, including：Rotatable stove bottom, annular furnace, partition wall, radiant tube heater, charging aperture, air inlet, discharging opening, gas outlet, multiple air hatch, turn-down rig, charging aperture are connected with the outlet of mixing pelletizing；Water quenching separative element, there is roasting material inlet, water inlet, be connected containing vanadium solution outlet and rich titanium sludge outlet, roasting material inlet with discharging opening.The system carries out sodium roasting using heat accumulating type rotating bed, and rich vanadium titanium material is handled with reference to water quenching separative element, significantly reduces the cost for handling rich vanadium titanium material, while improve the rate of recovery of vanadium.

Description

The system for handling rich vanadium titanium material
Technical field
The utility model belongs to field of metallurgy, specifically, the utility model is related to the system for handling rich vanadium titanium material.
Background technology
How efficiently vanadium titano-magnetite contains the multiple beneficial element such as iron, vanadium, titanium, have higher exploitation value, Comprehensive utilization iron, vanadium, titanium are always the direction that researcher is made great efforts.Utilize existing mineral processing method and traditional " burning The titanium slag grade that knot-blast furnace ironmaking-vanadium extraction by converter blowing-semi-steel making " smelting process flow is obtained is low, is difficult to realize iron, vanadium, titanium Etc. the high efficiency recovery of valuable constituent element.Technique is reduced directly because its flow is short, resource utilization is high, pollution is small, good product quality The advantages that there is certain technological merit in terms of Metallurgical resources comprehensive utilization.Caused by vanadium titano-magnetite gas base directly reducing Metallized pellet, after mill ore magnetic selection, the Magnetic Materials of high Iron grade and the nonmagnetics of rich vanadium titanium are obtained, rich vanadium titanium material can use The method progress wet method vanadium extraction of sodium roasting-neutrality leaching, and the fine size of the nonmagnetics after mill selects, light specific gravity, with now When the equipment such as some rotary kilns, heating furnace are calcined, large-scale cleaner need to be equipped with, causes investment operation cost increase.
Therefore, the technology of the existing rich vanadium titanium material of processing is further improved.
Utility model content
The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality It is to propose a kind of system for handling rich vanadium titanium material with a new purpose.The system carries out sodium using heat accumulating type rotating bed Roasting, and rich vanadium titanium material is handled with reference to water quenching-separative element, the cost for handling rich vanadium titanium material is significantly reduced, together When improve the rate of recovery of vanadium.
In one side of the present utility model, the utility model proposes a kind of system for handling rich vanadium titanium material, according to this The embodiment of utility model, the system include：
There is rich vanadium titanium material entrance, sodium agent entrance, water inlet and mixed material to go out for mixing device, the mixing device Mouthful；
Shaped device, the shaped device have mixed material entrance and the outlet of mixing pelletizing, the mixed material entrance It is connected with mixed material outlet；
Heat accumulating type rotating bed, the heat accumulating type rotating bed include：
Rotatable stove bottom；
Annular furnace, along the rotation direction of the furnace bottom, in the annular furnace successively include feed zone, preheating zone, Middle warm area, high-temperature region and discharge zone；
Partition wall, the partition wall are arranged between the feed zone and the discharge zone；
Radiant tube heater, the radiant tube heater are arranged in the preheating zone, the middle warm area and the high-temperature region；
Charging aperture, the charging aperture are located at the feed zone and are connected with the mixing pelletizing outlet；
Air inlet, the air inlet are located at the high-temperature region and arranged close to the discharge zone；
Discharging opening, the discharging opening are located at the discharge zone；
Gas outlet, the gas outlet are located at the preheating zone and arranged close to the feed zone；
Multiple air hatch, the multiple air hatch are located at the preheating zone, the middle warm area and the high-temperature region；
Turn-down rig, the turn-down rig are arranged in the preheating zone, the middle warm area and the high-temperature region；
Water quenching-separative element, the water quenching-separative element have roasting material inlet, water inlet, containing vanadium solution outlet and Rich titanium sludge outlet, the roasting material inlet are connected with the discharging opening.
According to the system of the rich vanadium titanium material of processing of the utility model embodiment by using heat accumulating type rotating bed to rich vanadium titanium Material carries out sodium roasting, and uses radiant tube radiant heat transfer, and furnace gas flow is small, and airborne dust is few, is set without being equipped with large-scale dedusting It is standby, the cost of investment of whole technique can be significantly reduced, and turn-down rig is set in heat accumulating type rotating bed, be advantageous to oxygen and enter Enter inside the bed of material, while by supplying weak oxide gas to high-temperature region so that gas is discharged from preheating zone after reaction, i.e. gas stream Dynamic direction with furnace bottom rotation direction on the contrary, and by arranging multiple air hatch in preheating zone, middle warm area and high-temperature region, it is right in real time Oxygen content in preheating zone, middle warm area and high-temperature region is detected and controlled, and is remarkably improved the sodium roasting effect of rich vanadium titanium material Fruit, then water quenching chilling will be directly carried out through the high-temperature roasting material obtained by sodium roasting, the crystal formation of roasting material can be destroyed, most After carry out separating treatment, the vanadium for being advantageous to be calcined in material is leached, and titanium is stayed in filter residue, and the separation for being achieved in vanadium titanium is returned Receive.
In addition, can also have what is added as follows according to the system of the rich vanadium titanium material of processing of the utility model above-described embodiment Technical characteristic：
Optional, the heat accumulating type rotating bed includes multiple radiant tube heaters, the multiple radiant tube heater arrangement On the inwall of the preheating zone, the middle warm area and the high-temperature region.Thus, it may be such that mixing pelletizing is heated evenly, significantly Improve the sodium roasting efficiency of rich vanadium titanium material.
It is optional, against the rotation direction of the furnace bottom, the multiple air hatch successively arranged for interval the high-temperature region, The gentle preheating zone in described, and on the periphery formed in the center of circle by the multiple air hatch, close to the discharge zone The central angle of the center of circle and the partition wall of air hatch be in 25~35 degree, preferably 30 degree.Thus, rich vanadium can be further monitored in real time The atmosphere of titanium material sodium roasting process, and then further improve the efficiency of rich vanadium titanium material sodium roasting.
Optional, on the periphery formed in the center of circle by the multiple air hatch, the circle of the two neighboring air hatch Central angle between the heart is 25~35 degree, preferably 30 degree.Thus, rich vanadium titanium material sodium roasting process can be further monitored in real time Atmosphere, and then further improve the efficiency of rich vanadium titanium material sodium roasting.
It is optional, including multiple turn-down rigs, the turn-down rig successively arranged for interval preheating zone, the middle warm area and The high-temperature region, and the central angle between adjacent two turn-down rigs is 45~55 degree, preferably 50 degree.Thus, have Enter the inside of the bed of material beneficial to oxygen, further improve the roasting efficiency of rich vanadium titanium material.
Optional, the fabric thickness of the furnace bottom is 10~50mm.Thus, can be improved while improving and being calcined efficiency whole The production capacity of individual technique.
Optional, the furnace bottom can move in vertical direction.Thus, it can further improve being heated evenly for mixing pelletizing Property, and then further improve the sodium roasting efficiency of rich vanadium titanium material.
Optional, the system of the rich vanadium titanium material of processing further comprises：Dewatered clean oxygenating unit, the dewatered clean Oxygenating unit has air intake, oxygen intake, the outlet of impurity gas and mixed gas outlet, the gas outlet and the air intake phase Even, the air inlet is connected with the mixed gas outlet.Thus, gas in heat accumulating type rotating bed can be achieved to recycle, Reduce the discharge capacity of waste gas.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment Become obvious and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram according to the rich vanadium titanium material of processing of the utility model one embodiment；
Fig. 2 is the vertical view of heat accumulating type rotating bed in the system according to the rich vanadium titanium material of processing of the utility model one embodiment Figure；
Fig. 3 is the system structure diagram according to the rich vanadium titanium material of processing of the utility model further embodiment；
Fig. 4 is the method stream that rich vanadium titanium material is handled according to the system of the rich vanadium titanium material of processing of the utility model one embodiment Journey schematic diagram；
Fig. 5 is the method for handling rich vanadium titanium material according to the system of the rich vanadium titanium material of processing of the utility model further embodiment Schematic flow sheet.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings Orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified dress Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model Limitation.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two It is individual, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two The connection of element internal or the interaction relationship of two elements, limited unless otherwise clear and definite.For the common skill of this area For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In one side of the present utility model, the utility model proposes a kind of system for handling rich vanadium titanium material, according to this The embodiment of utility model, with reference to figure 1, the system includes：Mixing device 100, shaped device 200, the and of heat accumulating type rotating bed 300 Water quenching-separative element 400.
According to embodiment of the present utility model, mixing device 100 have rich vanadium titanium material entrance 101, sodium agent entrance 102, Water inlet 103 and mixed material outlet 104, and suitable for rich vanadium titanium material, sodium agent and water are carried out into mixed processing, to be mixed Compound material.Specifically, selecting technique to be handled to obtain rich vanadium titanium mill to vanadium titano-magnetite using gas base directly reducing-mill selects tailings As rich vanadium titanium material, because the temperature of gas base directly reducing is low, the iron crystal grain of metallized pellet is small, in order to meet product requirement, needs Increase mog, therefore the granularity of rich vanadium titanium material is thinner, the granularity of rich vanadium titanium material is not more than the accounting more than 80% of 320 mesh.Sodium The granularity of agent is not particularly restricted, and those skilled in the art can be selected according to being actually needed, such as can be small In 200 mesh.Mixing device is also not particularly limited, such as can be strength batch mixer.Rich vanadium titanium material and sodium agent, water are through batch mixing The moisture content of mixed material obtained by device is 3-5%.After mixing device mixed processing, be remarkably improved rich vanadium titanium material with The contact area of sodium agent.
According to one embodiment of the present utility model, the particular type of sodium agent is not particularly restricted, the skill of this area Art personnel can be selected according to being actually needed, and according to a specific embodiment of the present utility model, sodium agent can be choosing From at least one of sodium carbonate, sodium sulphate and sodium chloride, preferably sodium carbonate.Thus, be advantageous to improve the sodium of rich vanadium titanium material It is calcined efficiency.
According to further embodiment of the present utility model, rich vanadium titanium material and the mixing quality ratio of sodium agent are not limited especially System, those skilled in the art can be selected according to being actually needed, rich according to a specific embodiment of the present utility model Vanadium titanium material and the mixing quality ratio of sodium agent can be 20：(1-4).Thus, it can further improve the sodium roasting of rich vanadium titanium material Efficiency.Inventor has found that, when sodium agent addition is too low, the trivalent barium oxide in rich vanadium titanium material can not be completely converted into can 5 valency barium oxides of water are dissolved in, the leaching rate of vanadium can be caused to decline；And when sodium agent excess, it can cause rich in roasting process The soft heat of titanium material, furnace bottom is bonded, while the fluctuation of leaching liquid pH value can be caused in vanadium leaching process, waste of resource, improved Production cost.
According to embodiment of the present utility model, shaped device 200 has mixed material entrance 201 and the outlet of mixing pelletizing 202, mixed material entrance 201 is connected with mixed material outlet 202, and suitable for mixed material is carried out into forming processes, so as to To mixing pelletizing.Inventor has found that the mixing pelletizing that reason richness vanadium titanium material and sodium agent, water form is relative in whole technique Motion is smaller, therefore the intensity requirement to mixing pelletizing is low, only needs the drop strength of wet bulb to be not less than 3 times, the porosity of dry bulb is not Less than 16%, so without matching somebody with somebody binding agent outside, be advantageous to cost-effective.
According to embodiment of the present utility model, with reference to figure 1-2, heat accumulating type rotating bed 300 includes：Rotatable stove bottom 31, ring Shape burner hearth 32, partition wall 33, radiant tube heater 34, turn-down rig 35.
According to one embodiment of the present utility model, the fabric thickness of furnace bottom 31 is not particularly restricted, the skill of this area Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, the fabric thickness of furnace bottom Can be 10~50mm.Thus, the production capacity of whole technique can be improved while improving and being calcined efficiency.Inventor has found, works as cloth When material thickness is less than 10mm, first, influenceing production efficiency, energy loss is caused, increases production cost, the spiral shell second, revolving bed discharges Rotation can not effectively discharge, and cause material to remain in stove and form dead material；When fabric thickness is higher than 50mm, oxygen is difficult to gas expansion It is dissipated to inside material, heat conduction efficiency is poor in bed, and sodium roasting effect is poor, and the leaching rate of later stage vanadium is adversely affected.
According to further embodiment of the present utility model, furnace bottom 31 can move in vertical direction.Inventor has found, with stove Bottom vertical direction movement, can according to fabric thickness different on furnace bottom, adjust radiant tube heater from mixing pelletizing height Degree, and then ensure the heat-transfer effect of mixing pelletizing so that rich vanadium titanium material and sodium agent roasting are abundant, improve the sodium of mixing pelletizing Efficiency is calcined, and then improves the treatment effeciency of whole technique.
According to another embodiment of the present utility model, along the rotation direction of furnace bottom 31, wrapped successively in annular furnace 32 Include feed zone 321, preheating zone 322, middle warm area 323, high-temperature region 324 and discharge zone 325.It is specifically, mixed obtained by shaped device Close pelletizing and supply the feed zone to heat accumulating type rotating bed, as furnace bottom is preheated successively after cloth honest material on rotatable stove bottom Area, middle warm area and high-temperature region carry out sodium roasting processing, obtain gas after being calcined material and reacting.
According to a specific embodiment of the present utility model, feed zone 321 is disposed with charging aperture 301, and charging aperture 301 with Pelletizing outlet 202 is mixed to be connected, and suitable for the mixing pelletizing obtained in shaped device is supplied to feed zone through charging aperture.
According to another specific embodiment of the present utility model, the location arrangements in preheating zone 322 close to feed zone 321 have Gas outlet 304, and revolving bed is discharged in the gas outlet of the preheated area's arrangement of gas after the reaction suitable for calcination in burner hearth is obtained. Specifically, gas outlet can be arranged on the roof of preheating zone.
According to another specific embodiment of the present utility model, close to the location arrangements of discharge zone 325 in high-temperature region 324 There is air inlet 303, and suitable for the air inlet of weak oxide gas (oxygen or oxygen-enriched air) through high-temperature region is supplied to burner hearth, Namely in heat accumulating type rotating bed the flow direction of gas and rotatable furnace bottom direction of rotation on the contrary, thus, can accelerate to mix The sodium roasting efficiency of pelletizing.Specifically, air inlet can be arranged in the side wall of high-temperature region.
According to another embodiment of the present utility model, discharging opening 302 is disposed with discharge zone 325, and be suitable to gained Solid roasting product discharges revolving bed.
According to another specific embodiment of the present utility model, partition wall 33 be arranged in feed zone 321 and discharge zone 325 it Between.Thus, it is possible to ensure to supply oxygen extremely or the flow direction of oxygen-enriched air and the rotation direction of furnace bottom through high-temperature region on the contrary, So as to further improve the sodium roasting efficiency of mixing pelletizing.
According to another specific embodiment of the present utility model, multiple air hatch 305 can be located at preheating zone 322, medium temperature Area 323 and high-temperature region 324.Inventor has found, right in real time by arranging multiple air hatch in preheating zone, middle warm area and high-temperature region Oxygen content in preheating zone, middle warm area and high-temperature region is detected and controlled, so that rich vanadium titanium material is under weak oxide atmosphere Sodium roasting is carried out, specifically, the oxygen content that air hatch measures is not less than 6vt%, so as to improve the sodium roasting of mixing pelletizing Efficiency..
According to another specific embodiment of the present utility model, multiple air hatch 305 can be arranged in preheating zone 322, in On warm area 323 and the furnace roof of high-temperature region 324.Inventor has found, realizes that multiple spot detects by setting up multiple air hatch, can enter one Step monitors the atmosphere of rich vanadium titanium material sodium roasting process in real time, to ensure that rich vanadium titanium material carries out sodium under weak oxide atmosphere all the time Roasting, and then the efficiency of rich vanadium titanium material sodium roasting is further improved, while air hatch is arranged on furnace roof, can conveniently it take Gas.
According to another specific embodiment of the present utility model, the arrangement of multiple air hatch is not particularly restricted, Those skilled in the art can be selected according to being actually needed, according to a specific embodiment of the present utility model, against stove The rotation direction at bottom 31, multiple air hatch 305 can successively arranged for interval in high-temperature region 324, middle warm area 323 and preheating zone 322, And on the periphery formed in the center of circle by multiple air hatch 305, close to the center of circle of the air hatch 305 of discharge zone 325 and partition wall 33 central angle is in 25~35 degree, preferably 30 degree.Inventor has found, close due to using spiral discharging when being separated by angle too small It is poor to seal effect, discharging gas is easily polluted by extraneous gas, is caused oxygen content to fluctuate, is influenceed accuracy；And work as and be separated by angle When excessive, roasting high-temperature region will lack enough compositions surveyed gas point and characterize furnace gas, have an impact to the richness of data.By This, using the arrangement of the application, it is ensured that take gas as roasting gas in discharging opening leading portion stove, and test point can be accurate Reflect furnace gas composition.
According to another specific embodiment of the present utility model, the position relationship of two neighboring air hatch 305 is not by spy Not limiting, those skilled in the art can be selected according to being actually needed, according to a specific example of the present utility model, On the periphery formed in the center of circle by multiple air hatch 305, central angle between the center of circle of two neighboring air hatch 305 can be with For 25~35 degree, preferably 30 degree.Inventor is had found, other arrangements card can be significantly better than using the arrangement of the application Effective monitoring of furnace gas atmosphere (data point is enough).
According to another embodiment of the present utility model, the layout area of radiant tube heater 34 is not particularly restricted, Those skilled in the art can be selected according to being actually needed, according to a specific embodiment of the present utility model, radiation Pipe heater 34 can be arranged in preheating zone 322, middle warm area 323 and high-temperature region 324.Specifically shown according to one of the present utility model Example, heat accumulating type rotating bed 300 can include multiple radiant tube heaters 34, and multiple radiant tube heaters 34 are arranged in preheating zone 322nd, on the annular inner wall of the corresponding annular furnace of middle warm area 323 and high-temperature region 324.Inventor has found, by preheating zone, medium temperature Area and high-temperature region arrangement radiant tube heater, ensure that the uniformity in temperature field, are remarkably improved the sodium roasting of rich vanadium titanium material Efficiency, and radiant tube heater is provided in a manner of heat radiation burn combustible gas and is calcined institute's calorific requirement, in radiant tube Atmosphere in flue gas and annular furnace completely cuts off, so as to reduce in the fault rate of device and gained product of roasting dust content compared with It is low.
According to another embodiment of the present utility model, the concrete arrangement of turn-down rig 35 is not particularly restricted, Those skilled in the art can be selected according to being actually needed, according to a specific embodiment of the present utility model, stirring Device 35 can be arranged in preheating zone 322, middle warm area 323 and high-temperature region 324.Specifically, both ends and the annular furnace of turn-down rig Motor outside thorax is connected, and turn-down rig can in the vertical direction do short-distance movement, can be according to cloth on furnace bottom in actual production The thickness of the material bed of material is lifted.Thus, by using turn-down rig, be advantageous to oxygen and enter inside the bed of material, so as to significantly carry The sodium roasting effect of high rich vanadium titanium material.
According to a specific embodiment of the present utility model, the quantity of turn-down rig 35 and specific position be not by spy Do not limit, those skilled in the art can be selected according to being actually needed, such as can include multiple turn-down rigs 35, be turned over Expect that device 35 can arranged for interval be in preheating zone 322, middle warm area 323 and high-temperature region 324 successively, and adjacent two stirrings dresses It can be 45~55 degree, preferably 50 degree to put the central angle between 35.Inventor has found, passes through the uniform cloth in heat accumulating type rotating bed Turn-down rig is put, is advantageously implemented mixing pelletizing uniformly and sufficiently in weak oxygen atmosphere, and then realize rich vanadium titanium material sodium It is abundant to change roasting, while improves the roasting efficiency of rich vanadium titanium material.And the selection of two neighboring turn-down rig interval angles is main Consider the demand of different firing stages, the main purpose that preheating zone carries out 1 stirring be in order to allow moisture in material can and When vapor away, avoid material web water enter in warm area cause the explosion of type ball, and carried out 4 times or so in middle warm area and high-temperature region Stirring, main cause are to promote the sodium roasting of rich vanadium titanium material, make the fully oxidized sodium of low price barium oxide in material For water miscible 5 valency barium oxide.And to be separated by angle smaller for turn-down rig, i.e. turn-down rig arrangement is more, and type ball can be caused to break It is broken, dust is formed, gas dust remover load increases, and to be separated by angle larger for turn-down rig, i.e. turn-down rig arrangement is less, can make It is insufficient into material sodiumizing oxidizing roasting, reduce later stage vanadium extraction rate.
Specifically, mixing pelletizing is supplied into the feed zone to heat accumulating type rotating bed, cloth is carried out on rotatable stove bottom, Fabric thickness is 10-50mm, mixing pelletizing under the rotation at rotatable stove bottom, successively by the preheating zone in annular furnace, in Warm area and high-temperature region carry out sodium roasting, the interior radiant tube heater by being arranged on annular furnace inwall of heat accumulating type rotating bed Heating, to ensure the temperature in burner hearth in 850-1000 degrees Celsius, and furnace bottom rotate during, be arranged in preheating zone, Middle warm area and the turn-down rig of high-temperature region can carry out stirring, the both ends of turn-down rig and annular furnace to the mixing pelletizing on furnace bottom Outer motor is connected, and turn-down rig can in the vertical direction do short-distance movement, can be according to cloth on furnace bottom in actual production The thickness of the bed of material is lifted, and is on the one hand advantageous to mixing pelletizing and is heated evenly, and is on the one hand advantageous to mix pelletizing all the time weak Under the atmosphere of oxygen occur sodium roasting reaction, meanwhile, furnace bottom can in the vertical direction motion, in this way, can be according to furnace bottom mixing ball The distance of the fabric thickness of group, regulation mixing pelletizing and radiant tube heater, and then the sodium roasting efficiency of rich vanadium titanium material is improved, Pelletizing is mixed after sodium roasting terminates, obtains being calcined material, discharging opening discharge of the roasting material through discharge zone, whole sodium roasting The time of processing is burnt between 90-120min.Period, the gas for having weak oxygen atmosphere in annular furnace all the time flow, gas (oxygen Or oxygen-enriched air) air inlet from high-temperature region close to discharge zone enters annular furnace, gas ensures that its pressure is before stove is entered 0.15-0.17MPa, temperature are 600-850 degrees Celsius, and preferably 850 degrees Celsius, the pressure of gas is 0.12- in annular furnace 0.13MPa, and the flow direction of gas is opposite with the rotation direction of furnace bottom.In order to detect the oxygen-containing of gas in annular furnace in real time Amount, can take gas by being arranged in the air hatch of preheating zone, middle warm area and high-temperature region respectively, detect and control the gas in burner hearth Oxygen content is not less than 6vt%, and after reacted, gas after being reacted, gas is arranged at preheating zone going out close to feed zone after reaction Gas port is discharged.
Specifically, reacted during being somebody's turn to do following (so that sodium agent is NaCl as an example)：
The 2NaCl+O when vanadium is trivalent state in rich vanadium titanium material2+H2O+V2O3=2NaVO3+2HCl
The 2NaCl+H when vanadium is 5 valence state in rich vanadium titanium material2O+V2O5=2NaVO3+2HCl
The 2NaCl+1.5O when lacking vapor in reaction2+V2O3=2NaVO3+2Cl2
In the later stage of roasting process, Na can be also generated4V2O7, and it is water miscible, its reaction is as follows：
4NaCl+2H2O+V2O3=Na4V2O7+4HCl
Sodium roasting uses sodium salt, can also use Na2CO3Or Na2SO4, its reaction is as follows：
Na2CO3+V2O3+O2=2NaVO3+CO2
Na2SO4+V2O3+1/2O2=2NaVO3+SO2
According to embodiment of the present utility model, water quenching-separative element 400 have roasting material inlet 401, water inlet 402, Containing vanadium solution outlet 403 and rich titanium sludge outlet 404, roasting material inlet 401 is connected with discharging opening 302, and be suitable to by water with Roasting material carries out water quenching and separating treatment successively, to obtain containing vanadium solution and rich titanium filter residue.Specifically, water quenching-separation list Member is the combined apparatus of granulating unit and separator, and the roasting material in heat accumulating type rotating bed after the completion of sodium roasting is through spiral Discharging, high-temperature roasting material directly carry out water quenching, can destroy the crystal formation of roasting material, in order to improve the leaching efficiency of vanadium, leaching Shi Caiyong ultrasonic waves add the agitating mode that mechanical agitation is combined, and the mixing quality ratio that roasting material and water are required in water quenching is 1：(5-10), and temperature during leaching is 90-100 degrees Celsius, leaching is separated (suction filtration) to mixed liquor after terminating, and is contained Vanadium solution and rich titanium filter residue, it can be used for further producing product containing vanadium containing vanadium solution, richness can be prepared as after rich titanium filter residue drying Titanium material.
According to the system of the rich vanadium titanium material of processing of the utility model embodiment by using heat accumulating type rotating bed to rich vanadium titanium Material carries out sodium roasting, and uses radiant tube radiant heat transfer, and furnace gas flow is small, and airborne dust is few, is set without being equipped with large-scale dedusting It is standby, the cost of investment of whole technique can be significantly reduced, and turn-down rig is set in heat accumulating type rotating bed, be advantageous to oxygen and enter Enter inside the bed of material, while by supplying weak oxide gas to high-temperature region so that gas is discharged from preheating zone after reaction, i.e. gas stream Dynamic direction with furnace bottom rotation direction on the contrary, and by arranging multiple air hatch in preheating zone, middle warm area and high-temperature region, it is right in real time Oxygen content in preheating zone, middle warm area and high-temperature region is detected and controlled, and is remarkably improved the sodium roasting effect of rich vanadium titanium material Fruit, then water quenching chilling will be directly carried out through the high-temperature roasting material obtained by sodium roasting, the crystal formation of roasting material can be destroyed, most After carry out separating treatment, the vanadium for being advantageous to be calcined in material is leached, and titanium is stayed in filter residue, and the separation for being achieved in vanadium titanium is returned Receive.
According to embodiment of the present utility model, with reference to figure 3, the system of above-mentioned processing richness vanadium titanium material further comprises：Dehydration Purify oxygenating unit 500.
According to embodiment of the present utility model, dewatered clean oxygenating unit 500 have air intake 501, oxygen intake 502, Impurity gas outlet 503 and mixed gas outlet 504, gas outlet 304 are connected with air intake 501, and air inlet 303 goes out with mixed gas Mouth 504 is connected, and feeds oxygen after qi exhaustion Water warfare after the reaction suitable for heat accumulating type rotating bed is obtained, to obtain gaseous mixture Body, and mixed gas is supplied to heat accumulating type rotating bed through air inlet.Specifically, by gas after the reaction obtained by heat accumulating type rotating bed It is purified, dehydration, oxygenation and be heated to be pressure be 0.15-0.17MPa, temperature be 600-850 degrees Celsius, preferably 850 degrees Celsius Afterwards, the air inlet through heat accumulating type rotating bed is passed through in heat accumulating type rotating bed the mixed gas of gained again, as mixing pelletizing sodium The reaction gas of roasting, thus, gas in heat accumulating type rotating bed can be achieved and recycle, reduce the discharge capacity of waste gas.Specifically, Sodium agent is with Na2CO3Exemplified by, the baking tail gases discharged by heat accumulating type rotating bed gas outlet first pass through waste heat boiler progress waste heat time Receive, carry out one-time dedusting by electrostatic precipitator, gas removes removing carbon dioxide through MDEA solution, and gas after drying adds with oxygen Pressure is passed through in heat accumulating type rotating bed.
By taking NaCl as an example, the baking tail gases discharged by heat accumulating type rotating bed gas outlet first pass through waste heat boiler progress for sodium agent Waste heat recovery, one-time dedusting is carried out by electrostatic precipitator, gas removes the Cl in tail gas after washing2, gas after drying Body is passed through in heat accumulating type rotating bed with oxygen pressurization.
Sodium agent is with Na2SO4Exemplified by, the baking tail gases discharged by heat accumulating type rotating bed gas outlet first pass through waste heat boiler and entered Row waste heat recovery, one-time dedusting is carried out by electrostatic precipitator, gas removes the SO in tail gas through Amine Solutions2, through drying Gas afterwards is passed through in heat accumulating type rotating bed with oxygen pressurization.
At least one the advantages of following is selected from as described above, can have according to the processing system of the utility model embodiment：
The sodium roasting of rich vanadium titanium material is carried out using heat accumulating type rotating bed according to the processing system of the utility model embodiment, Due to being radiant tube radiant heat transfer, furnace gas flow is small, and airborne dust is few, it is not necessary to is equipped with large-scale cleaner, investment reduction.
Turn-down rig is provided with according to the processing system revolving bed bed bottom top of the utility model embodiment, is advantageous to oxygen and enters Enter inside the bed of material, effectively improve the sodium roasting effect of material.
According to radiant tube is distributed with inside the processing system revolving bed of the utility model embodiment, and furnace bottom can be in Vertical Square To movement, regulation radiant tube from the bed of material with a distance from, increase radiant heat transfer efficiency.
It can be recycled, be reduced after removal of impurities is handled according to the processing system furnace gas of the utility model embodiment Waste gas discharges.
Water quenching is directly carried out according to the processing system high temperature discharging of the utility model embodiment, destroys the crystalline substance of roasting material The agitating mode being combined when type, mesh >=80% of raw material granularity -300 and leaching using ultrasonic wave+mechanical agitation, improve leaching effect Rate, leaching time is foreshortened into 1.5h by 2h, improves production efficiency.
It is smaller according to the processing system process program pelletizing relative motion of the utility model embodiment, to pellet strength requirement It is low, it is not necessary to cost-effective outside with binding agent.
In order to facilitate understanding, the method for handling the system using above-mentioned processing richness vanadium titanium material rich vanadium titanium material below is carried out in detail Thin description.According to embodiment of the present utility model, with reference to figure 4, this method includes：
S100：Rich vanadium titanium material, sodium agent and water are supplied into mixing device and carry out mixed processing
In the step, rich vanadium titanium material, sodium agent and water are supplied into mixing device and carry out mixed processing, to be mixed Compound material.Specifically, selecting technique to be handled to obtain rich vanadium titanium mill to vanadium titano-magnetite using gas base directly reducing-mill selects tailings As rich vanadium titanium material, because the temperature of gas base directly reducing is low, the iron crystal grain of metallized pellet is small, in order to meet product requirement, needs Increase mog, therefore the granularity of rich vanadium titanium material is thinner, the granularity of rich vanadium titanium material is not more than the accounting more than 80% of 320 mesh.Sodium The granularity of agent is not particularly restricted, and those skilled in the art can be selected according to being actually needed, such as can be small In 200 mesh.Mixing device is also not particularly limited, such as can be strength batch mixer.Rich vanadium titanium material and sodium agent, water are through batch mixing The moisture content of mixed material obtained by device is 3-5%.After mixing device mixed processing, be remarkably improved rich vanadium titanium material with The contact area of sodium agent.
According to one embodiment of the present utility model, the particular type of sodium agent is not particularly restricted, the skill of this area Art personnel can be selected according to being actually needed, and according to a specific embodiment of the present utility model, sodium agent can be choosing From at least one of sodium carbonate, sodium sulphate and sodium chloride, preferably sodium carbonate.Thus, be advantageous to improve the sodium of rich vanadium titanium material It is calcined efficiency.
According to further embodiment of the present utility model, rich vanadium titanium material and the mixing quality ratio of sodium agent are not limited especially System, those skilled in the art can be selected according to being actually needed, rich according to a specific embodiment of the present utility model Vanadium titanium material and the mixing quality ratio of sodium agent can be 20：(1-4).Thus, it can further improve the sodium roasting of rich vanadium titanium material Efficiency.Inventor has found that, when sodium agent addition is too low, the trivalent barium oxide in rich vanadium titanium material can not be completely converted into can 5 valency barium oxides of water are dissolved in, the leaching rate of vanadium can be caused to decline；When sodium agent excess, rich titanium in roasting process can be caused The soft heat of material, furnace bottom is bonded, while the fluctuation of leaching liquid pH value can be caused in vanadium leaching process, waste of resource, improve life Produce cost.
S200：Mixed material is supplied into shaped device and carries out forming processes
In the step, mixed material is supplied into shaped device and carries out forming processes, to obtain mixing pelletizing.Invention People has found that the relative motion of reason richness vanadium titanium material and sodium agent, the mixing pelletizing of water composition in whole technique is smaller, therefore to mixed The intensity requirement of conjunction pelletizing is low, only needs the drop strength of wet bulb to be not less than 3 times, and the porosity of dry bulb is not less than 16%, institute Without matching somebody with somebody binding agent outside, to be advantageous to cost-effective.
S300：Will mixing pelletizing supply the feed zone to heat accumulating type rotating bed so that mixing pelletizing successively preheated area, Middle warm area and high-temperature region carry out sodium roasting processing
In the step, mixing pelletizing is supplied into the feed zone to heat accumulating type rotating bed so that mixing pelletizing is successively through pre- Hot-zone, middle warm area and high-temperature region carry out sodium roasting processing, while weak oxide gas is supplied to high-temperature region through air inlet, obtain Gas after to roasting material and reaction, roasting material are discharged through the discharge zone, and gas is discharged through the gas outlet after reaction, and is led to Cross oxygen content in multiple air hatch detection preheating zones, middle warm area and high-temperature region.
According to one embodiment of the present utility model, the fabric thickness of furnace bottom 31 is not particularly restricted, the skill of this area Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, the fabric thickness of furnace bottom Can be 10~50mm.Thus, the production capacity of whole technique can be improved while improving and being calcined efficiency.Inventor has found, works as cloth When material thickness is less than 10mm, first, influenceing production efficiency, energy loss is caused, increases production cost, the spiral shell second, revolving bed discharges Rotation can not effectively discharge, and cause material to remain in stove and form dead material；When fabric thickness is higher than 50mm, oxygen is difficult to gas expansion It is dissipated to inside material, heat conduction efficiency is poor in bed, and sodium roasting effect is poor, and the leaching rate of later stage vanadium is adversely affected.
Specifically, mixing pelletizing is supplied into the feed zone to heat accumulating type rotating bed, cloth is carried out on rotatable stove bottom, Fabric thickness is 10-50mm, mixing pelletizing under the rotation at rotatable stove bottom, successively by the preheating zone in annular furnace, in Warm area and high-temperature region carry out sodium roasting, the interior radiant tube heater by being arranged on annular furnace inwall of heat accumulating type rotating bed Heating, to ensure the temperature in burner hearth in 850-1000 degrees Celsius, and furnace bottom rotate during, be arranged in preheating zone, Middle warm area and the turn-down rig of high-temperature region can carry out stirring, the both ends of turn-down rig and annular furnace to the mixing pelletizing on furnace bottom Outer motor is connected, and turn-down rig can in the vertical direction do short-distance movement, can be according to cloth on furnace bottom in actual production The thickness of the bed of material is lifted, and is on the one hand advantageous to mixing pelletizing and is heated evenly, and is on the one hand advantageous to mix pelletizing all the time weak Under the atmosphere of oxygen occur sodium roasting reaction, meanwhile, furnace bottom can in the vertical direction motion, in this way, can be according to furnace bottom mixing ball The distance of the fabric thickness of group, regulation mixing pelletizing and radiant tube heater, and then the sodium roasting efficiency of rich vanadium titanium material is improved, Pelletizing is mixed after sodium roasting terminates, obtains being calcined material, discharging opening discharge of the roasting material through discharge zone, whole sodium roasting The time of processing is burnt between 90-120min.Period, the gas for having weak oxygen atmosphere in annular furnace all the time flow, gas (oxygen Or oxygen-enriched air) air inlet from high-temperature region close to discharge zone enters annular furnace, gas ensures that its pressure is before stove is entered 0.15-0.17MPa, temperature are 600-850 degrees Celsius, and preferably 850 degrees Celsius, the pressure of gas is 0.12- in annular furnace 0.13MPa, and the flow direction of gas is opposite with the rotation direction of furnace bottom.In order to detect the oxygen-containing of gas in annular furnace in real time Amount, can take gas by being arranged in the air hatch of preheating zone, middle warm area and high-temperature region respectively, detect and control the gas in burner hearth Oxygen content is not less than 6vt%, and after reacted, gas after being reacted, gas is arranged at preheating zone going out close to feed zone after reaction Gas port is discharged.
Specifically, reacted during being somebody's turn to do following (so that sodium agent is NaCl as an example)：
The 2NaCl+O when vanadium is trivalent state in rich vanadium titanium material2+H2O+V2O3=2NaVO3+2HCl
The 2NaCl+H when vanadium is 5 valence state in rich vanadium titanium material2O+V2O5=2NaVO3+2HCl
The 2NaCl+1.5O when lacking vapor in reaction2+V2O3=2NaVO3+2Cl2
In the later stage of roasting process, Na can be also generated4V2O7, and it is water miscible, its reaction is as follows：
4NaCl+2H2O+V2O3=Na4V2O7+4HCl
Sodium roasting uses sodium salt, can also use Na2CO3Or Na2SO4, its reaction is as follows：
Na2CO3+V2O3+O2=2NaVO3+CO2
Na2SO4+V2O3+1/2O2=2NaVO3+SO2
S400：Water and roasting material are supplied to water quenching-separative element and carries out water quenching and separating treatment successively
In the step, water and roasting material are supplied to water quenching-separative element and carries out water quenching and separating treatment successively, so as to Obtain containing vanadium solution and rich titanium filter residue.Specifically, the roasting material after the completion of sodium roasting is through spiral discharging, high-temperature roasting material Water quenching is directly carried out, the crystal formation of roasting material can be destroyed, in order to improve the leaching efficiency of vanadium, machinery is added using ultrasonic wave during leaching The agitating mode being combined is stirred, the mixing quality ratio that roasting material and water are required in water quenching is 1：(5-10), and during leaching Temperature be 90-100 degrees Celsius, leaching terminate after (suction filtration) is separated to mixed liquor, obtain containing vanadium solution and rich titanium filter residue, It can be used for further producing product containing vanadium containing vanadium solution, rich-titanium material can be prepared as after rich titanium filter residue drying.
According to the method for the rich vanadium titanium material of processing of the utility model embodiment by using heat accumulating type rotating bed to rich vanadium titanium Material carries out sodium roasting, and uses radiant tube radiant heat transfer, and furnace gas flow is small, and airborne dust is few, is set without being equipped with large-scale dedusting It is standby, the cost of investment of whole technique can be significantly reduced, and turn-down rig is set in heat accumulating type rotating bed, be advantageous to oxygen and enter Enter inside the bed of material, while by supplying weak oxide gas to high-temperature region so that gas is discharged from preheating zone after reaction, i.e. gas stream Dynamic direction with furnace bottom rotation direction on the contrary, and by arranging multiple air hatch in preheating zone, middle warm area and high-temperature region, it is right in real time Oxygen content in preheating zone, middle warm area and high-temperature region is detected and controlled, and is remarkably improved the sodium roasting effect of rich vanadium titanium material Fruit, then water quenching chilling will be directly carried out through the high-temperature roasting material obtained by sodium roasting, the crystal formation of roasting material can be destroyed, most After carry out separating treatment, the vanadium for being advantageous to be calcined in material is leached, and titanium is stayed in filter residue, and the separation for being achieved in vanadium titanium is returned Receive.
According to embodiment of the present utility model, with reference to figure 5, the method for above-mentioned processing richness vanadium titanium material further comprises：
S500：Gas supplies after the reaction that S300 is obtained feeds oxygen into dewatered clean oxygenating unit after imurity-removal gas
Gas supplies in the step, after the reaction that S300 is obtained feeds into dewatered clean oxygenating unit after imurity-removal gas Oxygen, to obtain mixed gas, and mixed gas is supplied to heat accumulating type rotating bed through air inlet.Specifically, by heat accumulating type After reaction obtained by revolving bed gas it is purified, dehydration, oxygenation and be heated to be pressure be 0.15-0.17MPa, temperature 600-850 Degree Celsius, after preferably 850 degrees Celsius, the air inlet through heat accumulating type rotating bed is passed through heat accumulating type rotating bed to the mixed gas of gained again It is interior, as the reaction gas of mixing pelletizing sodium roasting, thus, gas in heat accumulating type rotating bed can be achieved and recycle, reduce The discharge capacity of waste gas.
Sodium agent is with Na2CO3Exemplified by, the baking tail gases discharged by heat accumulating type rotating bed gas outlet first pass through waste heat boiler and entered Row waste heat recovery, one-time dedusting is carried out by electrostatic precipitator, gas removes removing carbon dioxide through MDEA solution, gas after drying Body is passed through in heat accumulating type rotating bed with oxygen pressurization.
By taking NaCl as an example, the baking tail gases discharged by heat accumulating type rotating bed gas outlet first pass through waste heat boiler progress for sodium agent Waste heat recovery, one-time dedusting is carried out by electrostatic precipitator, gas removes the Cl in tail gas after washing2, gas after drying Body is passed through in heat accumulating type rotating bed with oxygen pressurization.
Sodium agent is with Na2SO4Exemplified by, the baking tail gases discharged by heat accumulating type rotating bed gas outlet first pass through waste heat boiler and entered Row waste heat recovery, one-time dedusting is carried out by electrostatic precipitator, gas removes the SO in tail gas through Amine Solutions2, through drying Gas afterwards is passed through in heat accumulating type rotating bed with oxygen pressurization.
Below with reference to specific embodiment, the utility model is described, it is necessary to which explanation is, these embodiments are only Descriptive, without limiting the utility model in any way.
Embodiment 1
By granularity no more than rich vanadium titanium material and the granularity of the accounting more than 80% of 320 mesh be less than the sodium carbonate of 200 mesh according to Mixing quality is than 20：2 carry out dispensings, and with addition of 5wt% water, three is carried out into mixing processing using strength batch mixer, so as to Obtain mixed material；Then mixed material is supplied into shaped device and carries out forming processes, obtain a diameter of 15mm, thickness 5mm oblate spheroid, the mixing pelletizing that the porosity is 21% is obtained after drying.
Mixing pelletizing is supplied into the feed zone to heat accumulating type rotating bed through charging belt, cloth is carried out on rotatable stove bottom Material, fabric thickness 30mm, mixing pelletizing under the rotation at rotatable stove bottom, successively by the preheating zone in annular furnace, in Warm area and high-temperature region carry out sodium roasting, the interior radiant tube heater by being arranged on annular furnace inwall of heat accumulating type rotating bed Heating, the distance of radiant tube heater bed of material upper surface on furnace bottom is 400mm, to ensure the temperature in burner hearth in 850- In 1000 degrees Celsius, wherein high-temperature region is 900 degrees Celsius, and middle warm area is 800 degrees Celsius, and during furnace bottom rotates, cloth 4 stirrings can be carried out to the mixing pelletizing on furnace bottom by putting the turn-down rig in middle warm area and high-temperature region, and mixing pelletizing roasts in sodium After sintering beam, obtain being calcined material, discharging opening discharge of the roasting material through discharge zone, the time of whole sodium roasting processing is 90min, wherein preheating zone stop 24min, and middle warm area stops 24min, and high-temperature region stops 42min.Period, in annular furnace all the time The gas for having weak oxygen atmosphere flows, and air inlet of the gas from high-temperature region close to discharge zone enters annular furnace, gas enter stove it Preceding its pressure of guarantee is 0.15MPa, and temperature is 650 degrees Celsius, and oxygen content 15vt%, the pressure of gas is in annular furnace 0.12MPa, and the flow direction of gas and the rotation direction of furnace bottom are on the contrary, and by being arranged in preheating zone, middle warm area and high temperature The air hatch in area takes gas, and the oxygen content for detecting the gas in burner hearth is 8-10%, after reacted, gas after being reacted, after reaction Gas is arranged at preheating zone and discharged close to the gas outlet of feed zone, and gas carries out waste heat recovery through waste heat boiler again after reaction, by Purification, dehydration, oxygenation and heat boosting be 0.15MPa, after the gas that temperature is 650 degrees Celsius, oxygen content is 15vt%, return To heat accumulating type rotating bed, the reaction gas as mixing pelletizing sodium roasting.
For roasting material after the completion of sodium roasting through spiral discharging, high-temperature roasting material directly carries out water quenching, adopts during leaching The agitating mode being combined with ultrasonic wave plus mechanical agitation, the mixing quality ratio that material and water are calcined in water quenching is 1：5, and soak Temperature when taking is 95 degrees Celsius, leaching time 90min, and leaching filters after terminating to mixed liquor, obtains containing vanadium solution With rich titanium filter residue, it can be used for further producing product containing vanadium containing vanadium solution, rich-titanium material, vanadium can be prepared as after rich titanium filter residue drying Extraction rate reaches 92.8%.
Embodiment 2
By granularity no more than rich vanadium titanium material and the granularity of the accounting more than 80% of 320 mesh be less than the sodium carbonate of 200 mesh according to Mixing quality is than 20：4 carry out dispensings, and with addition of 7wt% water, three is carried out into mixing processing using strength batch mixer, so as to Obtain mixed material；Then mixed material is supplied into shaped device and carries out forming processes, obtain a diameter of 15mm, thickness 5mm oblate spheroid, the mixing pelletizing that the porosity is 21% is obtained after drying.
Mixing pelletizing is supplied into the feed zone to heat accumulating type rotating bed through charging belt, cloth is carried out on rotatable stove bottom Material, fabric thickness 50mm, mixing pelletizing under the rotation at rotatable stove bottom, successively by the preheating zone in annular furnace, in Warm area and high-temperature region carry out sodium roasting, the interior radiant tube heater by being arranged on annular furnace inwall of heat accumulating type rotating bed Heating, the distance of radiant tube heater bed of material upper surface on furnace bottom is 350mm, to ensure the temperature in burner hearth in 850- In 1000 degrees Celsius, wherein high-temperature region is 1000 degrees Celsius, and middle warm area is 900 degrees Celsius, and during furnace bottom rotates, cloth 4 stirrings can be carried out to the mixing pelletizing on furnace bottom by putting the turn-down rig in middle warm area and high-temperature region, and mixing pelletizing roasts in sodium After sintering beam, obtain being calcined material, discharging opening discharge of the roasting material through discharge zone, the time of whole sodium roasting processing is 120min, wherein preheating zone stop 32min, and middle warm area stops 32min, and high-temperature region stops 56min.Period, annular furnace is interior to be begun The gas for having weak oxygen atmosphere eventually flows, and air inlet of the gas from high-temperature region close to discharge zone enters annular furnace, and gas is entering stove It is 0.16MPa to ensure its pressure before, and temperature is 850 degrees Celsius, oxygen content 18vt%, the pressure of gas in annular furnace For 0.14MPa, and the flow direction of gas and the rotation direction of furnace bottom are on the contrary, and by being arranged in preheating zone, middle warm area and height The air hatch of warm area takes gas, and the oxygen content for detecting the gas in burner hearth is 10-12%, after reacted, gas after being reacted, and reaction Afterwards gas be arranged at preheating zone close to feed zone gas outlet discharge, after reaction gas again through waste heat boiler carry out waste heat recovery, after Purified dehydration, oxygenation and to be pressurised into pressure be 0.15MPa, after temperature is 650 degrees Celsius, oxygen content is 18vt%, are returned It is back in heat accumulating type rotating bed, the reaction gas as mixing pelletizing sodium roasting.
For roasting material after the completion of sodium roasting through spiral discharging, high-temperature roasting material directly carries out water quenching, adopts during leaching The agitating mode being combined with ultrasonic wave plus mechanical agitation, the mixing quality ratio that material and water are calcined in water quenching is 1：8, and soak Temperature when taking is 95 degrees Celsius, leaching time 90min, and leaching filters after terminating to mixed liquor, obtains containing vanadium solution With rich titanium filter residue, it can be used for further producing product containing vanadium containing vanadium solution, rich-titanium material, vanadium can be prepared as after rich titanium filter residue drying Extraction rate reaches 94.2%.
Embodiment 3
By granularity no more than rich vanadium titanium material and the granularity of the accounting more than 80% of 320 mesh be less than the sodium chloride of 200 mesh according to Mixing quality is than 20：4 carry out dispensings, and with addition of 7wt% water, three is carried out into mixing processing using strength batch mixer, so as to Obtain mixed material；Then mixed material is supplied into shaped device and carries out forming processes, obtain a diameter of 15mm, thickness 5mm oblate spheroid, the mixing pelletizing that the porosity is 21% is obtained after drying.
Mixing pelletizing is supplied into the feed zone to heat accumulating type rotating bed through charging belt, cloth is carried out on rotatable stove bottom Material, fabric thickness 50mm, mixing pelletizing under the rotation at rotatable stove bottom, successively by the preheating zone in annular furnace, in Warm area and high-temperature region carry out sodium roasting, the interior radiant tube heater by being arranged on annular furnace inwall of heat accumulating type rotating bed Heating, the distance of radiant tube heater bed of material upper surface on furnace bottom is 350mm, to ensure the temperature in burner hearth in 850- In 1000 degrees Celsius, wherein high-temperature region is 1000 degrees Celsius, and middle warm area is 900 degrees Celsius, and during furnace bottom rotates, cloth 4 stirrings can be carried out to the mixing pelletizing on furnace bottom by putting the turn-down rig in middle warm area and high-temperature region, and mixing pelletizing roasts in sodium After sintering beam, obtain being calcined material, discharging opening discharge of the roasting material through discharge zone, the time of whole sodium roasting processing is 120min, wherein preheating zone stop 32min, and middle warm area stops 32min, and high-temperature region stops 56min.Period, annular furnace is interior to be begun The gas for having weak oxygen atmosphere eventually flows, and air inlet of the gas from high-temperature region close to discharge zone enters annular furnace, and gas is entering stove It is 0.16MPa to ensure its pressure before, and temperature is 850 degrees Celsius, oxygen content 18vt%, the pressure of gas in annular furnace For 0.14MPa, and the flow direction of gas and the rotation direction of furnace bottom are on the contrary, and by being arranged in preheating zone, middle warm area and height The air hatch of warm area takes gas, and the oxygen content for detecting the gas in burner hearth is 10-12%, after reacted, gas after being reacted, and reaction Afterwards gas be arranged at preheating zone close to feed zone gas outlet discharge, after reaction gas again through waste heat boiler carry out waste heat recovery, after Purified dehydration, oxygenation and to be pressurised into pressure be 0.15MPa, after temperature is 650 degrees Celsius, oxygen content is 18vt%, are returned It is back in heat accumulating type rotating bed, the reaction gas as mixing pelletizing sodium roasting.
For roasting material after the completion of sodium roasting through spiral discharging, high-temperature roasting material directly carries out water quenching, adopts during leaching The agitating mode being combined with ultrasonic wave plus mechanical agitation, the mixing quality ratio that material and water are calcined in water quenching is 1：10, and Temperature during leaching is 95 degrees Celsius, leaching time 90min, and leaching filters after terminating to mixed liquor, is obtained molten containing vanadium Liquid and rich titanium filter residue, it can be used for further producing product containing vanadium containing vanadium solution, rich-titanium material can be prepared as after rich titanium filter residue drying, Vanadium extraction rate reaches 91.6%.
Embodiment 4
By granularity no more than rich vanadium titanium material and the granularity of the accounting more than 80% of 320 mesh be less than the sodium sulphate of 200 mesh according to Mixing quality is than 20：4 carry out dispensings, and with addition of 7wt% water, three is carried out into mixing processing using strength batch mixer, so as to Obtain mixed material；Then mixed material is supplied into shaped device and carries out forming processes, obtain a diameter of 15mm, thickness 5mm oblate spheroid, the mixing pelletizing that the porosity is 21% is obtained after drying.
Mixing pelletizing is supplied into the feed zone to heat accumulating type rotating bed through charging belt, cloth is carried out on rotatable stove bottom Material, fabric thickness 50mm, mixing pelletizing under the rotation at rotatable stove bottom, successively by the preheating zone in annular furnace, in Warm area and high-temperature region carry out sodium roasting, the interior radiant tube heater by being arranged on annular furnace inwall of heat accumulating type rotating bed Heating, the distance of radiant tube heater bed of material upper surface on furnace bottom is 350mm, to ensure the temperature in burner hearth in 850- In 1000 degrees Celsius, wherein high-temperature region is 1000 degrees Celsius, and middle warm area is 900 degrees Celsius, and during furnace bottom rotates, cloth 4 stirrings can be carried out to the mixing pelletizing on furnace bottom by putting the turn-down rig in middle warm area and high-temperature region, and mixing pelletizing roasts in sodium After sintering beam, obtain being calcined material, discharging opening discharge of the roasting material through discharge zone, the time of whole sodium roasting processing is 120min, wherein preheating zone stop 32min, and middle warm area stops 32min, and high-temperature region stops 56min.Period, annular furnace is interior to be begun The gas for having weak oxygen atmosphere eventually flows, and air inlet of the gas from high-temperature region close to discharge zone enters annular furnace, and gas is entering stove It is 0.16MPa to ensure its pressure before, and temperature is 850 degrees Celsius, oxygen content 18vt%, the pressure of gas in annular furnace For 0.14MPa, and the flow direction of gas and the rotation direction of furnace bottom are on the contrary, and by being arranged in preheating zone, middle warm area and height The air hatch of warm area takes gas, and the oxygen content for detecting the gas in burner hearth is 12-13%, after reacted, gas after being reacted, and reaction Afterwards gas be arranged at preheating zone close to feed zone gas outlet discharge, after reaction gas again through waste heat boiler carry out waste heat recovery, after Purified dehydration, oxygenation and to be pressurised into pressure be 0.15MPa, after temperature is 650 degrees Celsius, oxygen content is 18vt%, are returned It is back in heat accumulating type rotating bed, the reaction gas as mixing pelletizing sodium roasting.
For roasting material after the completion of sodium roasting through spiral discharging, high-temperature roasting material directly carries out water quenching, adopts during leaching The agitating mode being combined with ultrasonic wave plus mechanical agitation, the mixing quality ratio that material and water are calcined in water quenching is 1：8, and soak Temperature when taking is 95 degrees Celsius, leaching time 90min, and leaching filters after terminating to mixed liquor, obtains containing vanadium solution With rich titanium filter residue, it can be used for further producing product containing vanadium containing vanadium solution, rich-titanium material, vanadium can be prepared as after rich titanium filter residue drying Extraction rate reaches 91.4%.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area Technical staff the different embodiments or example and the feature of different embodiments or example described in this specification can be entered Row combines and combination.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Claims (8)

  1. A kind of 1. system for handling rich vanadium titanium material, it is characterised in that including：
    Mixing device, the mixing device have rich vanadium titanium material entrance, sodium agent entrance, water inlet and mixed material outlet；
    Shaped device, the shaped device have mixed material entrance and the outlet of mixing pelletizing, the mixed material entrance and institute Mixed material outlet is stated to be connected；
    Heat accumulating type rotating bed, the heat accumulating type rotating bed include：
    Rotatable stove bottom；
    Annular furnace, along the rotation direction of the furnace bottom, include feed zone, preheating zone, medium temperature in the annular furnace successively Area, high-temperature region and discharge zone；
    Partition wall, the partition wall are arranged between the feed zone and the discharge zone；
    Radiant tube heater, the radiant tube heater are arranged in the preheating zone, the middle warm area and the high-temperature region；
    Charging aperture, the charging aperture are located at the feed zone and are connected with the mixing pelletizing outlet；
    Air inlet, the air inlet are located at the high-temperature region and arranged close to the discharge zone；
    Discharging opening, the discharging opening are located at the discharge zone；
    Gas outlet, the gas outlet are located at the preheating zone and arranged close to the feed zone；
    Multiple air hatch, the multiple air hatch are located at the preheating zone, the middle warm area and the high-temperature region；
    Turn-down rig, the turn-down rig are arranged in the preheating zone, the middle warm area and the high-temperature region；
    Water quenching-separative element, the water quenching-separative element have roasting material inlet, water inlet, containing vanadium solution outlet and rich titanium Sludge outlet, the roasting material inlet are connected with the discharging opening.
  2. 2. system according to claim 1, it is characterised in that the heat accumulating type rotating bed heats including multiple radiant tubes Device, the multiple radiant tube heater are arranged on the inwall of the preheating zone, the middle warm area and the high-temperature region.
  3. 3. system according to claim 1 or 2, it is characterised in that the multiple to take against the rotation direction of the furnace bottom Arranged for interval is in the high-temperature region, the middle warm area and the preheating zone successively for gas port, and in the circle by the multiple air hatch It it is in 25~35 degree close to the center of circle of air hatch of the discharge zone and the central angle of the partition wall on the periphery that the heart is formed.
  4. 4. system according to claim 3, it is characterised in that the periphery formed in the center of circle by the multiple air hatch On, the central angle between the center of circle of the two neighboring air hatch is 25~35 degree.
  5. 5. system according to claim 1, it is characterised in that including multiple turn-down rigs, the turn-down rig successively between Every being arranged in preheating zone, the middle warm area and the high-temperature region, and the central angle between adjacent two turn-down rigs For 45~55 degree.
  6. 6. system according to claim 1, it is characterised in that the fabric thickness of the furnace bottom is 10~50mm.
  7. 7. system according to claim 6, it is characterised in that the furnace bottom can move in vertical direction.
  8. 8. system according to claim 1, it is characterised in that further comprise：Dewatered clean oxygenating unit, the dehydration Purification oxygenating unit have air intake, oxygen intake, impurity gas outlet and mixed gas outlet, the gas outlet with it is described enter gas Mouth is connected, and the air inlet is connected with the mixed gas outlet.
CN201720599519.5U 2017-05-25 2017-05-25 The system for handling rich vanadium titanium material Expired - Fee Related CN206828601U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106987711A (en) * 2017-05-25 2017-07-28 江苏省冶金设计院有限公司 The system and method for the rich vanadium titanium material of processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106987711A (en) * 2017-05-25 2017-07-28 江苏省冶金设计院有限公司 The system and method for the rich vanadium titanium material of processing

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