CN106987711A

CN106987711A - The system and method for the rich vanadium titanium material of processing

Info

Publication number: CN106987711A
Application number: CN201710379778.1A
Authority: CN
Inventors: 唐敬坤; 员晓; 邓君; 冯鲁兴; 吴道洪
Original assignee: Jiangsu Province Metallurgical Design Institute Co Ltd
Current assignee: Jiangsu Province Metallurgical Design Institute Co Ltd
Priority date: 2017-05-25
Filing date: 2017-05-25
Publication date: 2017-07-28

Abstract

The invention discloses a kind of system and method for handling rich vanadium titanium material, including：Mixing device, with the outlet of rich vanadium titanium material entrance, sodium agent entrance, water inlet and mixed material；Shaped device, with 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, with roasting material inlet, water inlet, containing vanadium solution outlet and rich titanium sludge outlet, roasting material inlet is connected 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, the cost of the rich vanadium titanium material of processing is significantly reduced, while improving the rate of recovery of vanadium.

Description

The system and method for the rich vanadium titanium material of processing

Technical field

The invention belongs to field of metallurgy, specifically, the present invention relates to the system and method for the rich vanadium titanium material of processing.

Background technology

How efficiently vanadium titano-magnetite contains the multiple beneficial element such as iron, vanadium, titanium, with 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 High efficiency etc. valuable constituent element is reclaimed.Technique is reduced directly because its flow is short, resource utilization is high, pollution is small, good product quality The advantages of in terms of Metallurgical resources comprehensive utilization have certain technological merit.What vanadium titano-magnetite gas base directly reducing was produced Metallized pellet, after mill ore magnetic selection, obtains the Magnetic Materials of high Iron grade and the nonmagnetics of rich vanadium titanium, rich vanadium titanium material can be used The method progress wet method vanadium extraction of sodium roasting-neutrality leaching, and the fine size of the nonmagnetics after mill choosing, 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, investment operation cost increase is caused.

Therefore, the technology of the rich vanadium titanium material of existing processing is further improved.

The content of the invention

It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention One purpose is to propose a kind of system and method for handling rich vanadium titanium material.The system carries out sodium roasting using heat accumulating type rotating bed Burn, and rich vanadium titanium material is handled with reference to water quenching-separative element, significantly reduce the cost of the rich vanadium titanium material of processing, simultaneously Improve the rate of recovery of vanadium.

In one aspect of the invention, the present invention proposes a kind of system for handling rich vanadium titanium material, according to the reality of the present invention Example is applied, the system includes：

There is mixing device, the mixing device rich vanadium titanium material entrance, sodium agent entrance, water inlet and mixed material to go out Mouthful；

Shaped device, the shaped device has 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 includes：

Rotatable stove bottom；

Annular furnace, include successively along the rotation direction of the furnace bottom, in the annular furnace feed zone, preheating zone, Middle warm area, high-temperature region and discharge zone；

Partition wall, the partition wall is arranged between the feed zone and the discharge zone；

Radiant tube heater, the radiant tube heater is arranged in the preheating zone, the middle warm area and the high-temperature region；

Charging aperture, the charging aperture is located at the feed zone and is connected with the mixing pelletizing outlet；

Air inlet, the air inlet is located at the high-temperature region and close to discharge zone arrangement；

Discharging opening, the discharging opening is located at the discharge zone；

Gas outlet, the gas outlet is located at the preheating zone and close to feed zone arrangement；

Multiple air hatch, the multiple air hatch is located at the preheating zone, the middle warm area and the high-temperature region；

Turn-down rig, the turn-down rig is 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 is connected with the discharging opening.

The system of the rich vanadium titanium material of processing according to embodiments of the present invention is entered by using heat accumulating type rotating bed to rich vanadium titanium material Row sodium roasting, and radiant tube radiant heat transfer is used, furnace gas flow is small, and airborne dust is few, can without being equipped with large-scale cleaner The cost of investment of whole technique is significantly reduced, and turn-down rig is set in heat accumulating type rotating bed, is conducive to oxygen to enter pan feeding Layer is internal, while by supplying weak oxide gas to high-temperature region so that gas is discharged from preheating zone after reaction, i.e. gas flowing side To with furnace bottom rotation direction on the contrary, and by arranging multiple air hatch in preheating zone, middle warm area and high-temperature region, in real time to preheating Oxygen content in area, middle warm area and high-temperature region is detected and controlled, and is remarkably improved the sodium roasting effect of rich vanadium titanium material, so Water quenching chilling will be directly carried out through the high-temperature roasting material obtained by sodium roasting afterwards, the crystal formation of roasting material can be destroyed, it is most laggard Row separating treatment, is conducive to the vanadium being calcined in material to leach, and titanium is stayed in filter residue, is achieved in the separation and recovery of vanadium titanium.

In addition, the system of the rich vanadium titanium material of processing according to the above embodiment of the present invention can also have technology additional as follows Feature：

In some embodiments of the invention, the heat accumulating type rotating bed includes multiple radiant tube heaters, the multiple Radiant tube heater is arranged on the inwall of the preheating zone, the middle warm area and the high-temperature region.Thus, it may be such that mixing ball Group is heated evenly, and significantly improves the sodium roasting efficiency of rich vanadium titanium material.

In some embodiments of the invention, against the rotation direction of the furnace bottom, the multiple air hatch is spaced successively Be arranged in the high-temperature region, it is described in the gentle preheating zone, and the periphery constituted in the center of circle by the multiple air hatch On, the center of circle of air hatch and the central angle of the partition wall close to the discharge zone are in 25~35 degree, preferably 30 degree.Thus, may be used The further atmosphere of the rich vanadium titanium material sodium roasting process of monitoring in real time, and then further improve the effect of rich vanadium titanium material sodium roasting Rate.

In some embodiments of the invention, on the periphery that the center of circle by the multiple air hatch is constituted, adjacent two Central angle between the center of circle of the individual air hatch is 25~35 degree, preferably 30 degree.Thus, rich vanadium titanium can be further monitored in real time Expect the atmosphere of sodium roasting process, and then further improve the efficiency of rich vanadium titanium material sodium roasting.

In some embodiments of the invention, including multiple turn-down rigs, the turn-down rig successively arranged for interval pre- Central angle between hot-zone, the middle warm area and the high-temperature region, and adjacent two turn-down rigs is 45~55 degree, It is preferred that 50 degree.Thus, be conducive to oxygen to enter the inside of the bed of material, further improve the roasting efficiency of rich vanadium titanium material.

In some embodiments of the invention, the fabric thickness of the furnace bottom is 10~50mm.Thus, roasting can improved The production capacity of whole technique is improved while efficiency.

In some embodiments of the invention, the furnace bottom can be moved in vertical direction.Thus, it can further improve mixing The being heated evenly property of pelletizing, and then further improve the sodium roasting efficiency of rich vanadium titanium material.

In some embodiments of the invention, the system of the rich vanadium titanium material of the processing further comprises：Dewatered clean oxygenating Unit, the dewatered clean oxygenating unit have air intake, oxygen intake, impurity gas outlet and mixed gas outlet, it is described go out Gas port is connected with the air intake, and the air inlet is connected with the mixed gas outlet.Thus, heat accumulating type rotating bed can be achieved Recycling for interior gas, reduces the discharge capacity of waste gas.

In another aspect of the invention, it is rich that the present invention proposes a kind of system processing using the rich vanadium titanium material of above-mentioned processing The method of vanadium titanium material, embodiments in accordance with the present invention, this method includes：

(1) rich vanadium titanium material, sodium agent and water are supplied and mixed processing is carried out into the mixing device, to be mixed Material；

(2) mixed material is supplied and forming processes is carried out into the shaped device, to obtain mixing pelletizing；

(3) by it is described mixing pelletizing supply to the feed zone in the heat accumulating type rotating bed so that the mixing pelletizing according to It is secondary to carry out sodium roasting processing through the preheating zone, the middle warm area and the high-temperature region, while by weak oxide gas through institute State air inlet to supply to the high-temperature region, obtain gas after roasting material and reaction, the roasting material is discharged through the discharge zone, Gas is discharged through the gas outlet after the reaction, and detects the preheating zone, the middle warm area by the multiple air hatch With oxygen content in the high-temperature region；

(4) water and the roasting material are supplied to the water quenching-separative element and carries out water quenching and separating treatment successively, with Just obtain containing vanadium solution and rich titanium filter residue.

The method of the rich vanadium titanium material of processing according to embodiments of the present invention is entered by using heat accumulating type rotating bed to rich vanadium titanium material Row sodium roasting, and radiant tube radiant heat transfer is used, furnace gas flow is small, and airborne dust is few, can without being equipped with large-scale cleaner The cost of investment of whole technique is significantly reduced, and turn-down rig is set in heat accumulating type rotating bed, is conducive to oxygen to enter pan feeding Layer is internal, while by supplying weak oxide gas to high-temperature region so that gas is discharged from preheating zone after reaction, i.e. gas flowing side To with furnace bottom rotation direction on the contrary, and by arranging multiple air hatch in preheating zone, middle warm area and high-temperature region, in real time to preheating Oxygen content in area, middle warm area and high-temperature region is detected and controlled, and is remarkably improved the sodium roasting effect of rich vanadium titanium material, so Water quenching chilling will be directly carried out through the high-temperature roasting material obtained by sodium roasting afterwards, the crystal formation of roasting material can be destroyed, it is most laggard Row separating treatment, is conducive to the vanadium being calcined in material to leach, and titanium is stayed in filter residue, is achieved in the separation and recovery of vanadium titanium.

In addition, the method for the rich vanadium titanium material of processing according to the above embodiment of the present invention can also have technology additional as follows Feature：

In some embodiments of the invention, in step (1), the sodium agent is selected from sodium carbonate, sodium sulphate and chlorine Change at least one of sodium, preferably sodium carbonate.Thus, be conducive to improving the sodium roasting efficiency of rich vanadium titanium material.

In some embodiments of the invention, in step (1), the rich vanadium titanium material and the mixing quality of the sodium agent Than for 20：(1-4).Thus, it can further improve the sodium roasting efficiency of rich vanadium titanium material.

In some embodiments of the invention, the method for the rich vanadium titanium material of above-mentioned processing further comprises：(5) by step (3) Gas is supplied after the obtained reaction feeds oxygen into the dewatered clean oxygenating unit after imurity-removal gas, to obtain Mixed gas, and the mixed gas is supplied to the heat accumulating type rotating bed through the air inlet.Thus, heat accumulating type can be achieved Gas is recycled in revolving bed, reduces the discharge capacity of waste gas.

In some embodiments of the invention, in step (5), the temperature of the mixed gas is Celsius for 600~850 Degree, preferably 850 degrees Celsius.Thus, it can further improve the sodium roasting efficiency of rich vanadium titanium material.

In some embodiments of the invention, in step (3), the oxygen content that the multiple air hatch is measured is not less than 6v%.Thus, it can further improve the sodium roasting efficiency of rich vanadium titanium material.

In some embodiments of the invention, in step (3), the gas at the air inlet enter furnace pressure power for 0.15~ 0.17Mpa, the annular furnace breech pressure is 0.12-0.13MPa.Thus, it can further improve the sodium roasting of rich vanadium titanium material Efficiency.

The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.

Brief description of the drawings

The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined Substantially and be readily appreciated that, wherein：

Fig. 1 is the system structure diagram of the rich vanadium titanium material of processing according to an embodiment of the invention；

Fig. 2 is the top view of heat accumulating type rotating bed in the system according to an embodiment of the invention for handling rich vanadium titanium material；

Fig. 3 is the system structure diagram of the rich vanadium titanium material of processing according to further embodiment of the present invention；

Fig. 4 is the method flow schematic diagram of the rich vanadium titanium material of processing according to an embodiment of the invention；

Fig. 5 is the method flow schematic diagram of the rich vanadium titanium material of processing according to further embodiment of the present invention.

Embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.

In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three It is individual etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For one of ordinary skill in the art For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature It is that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.

In one aspect of the invention, the present invention proposes a kind of system for handling rich vanadium titanium material, according to the reality of the present invention Example is applied, with reference to Fig. 1, the system includes：Mixing device 100, shaped device 200, heat accumulating type rotating bed 300 and water quenching-separation list Member 400.

There is embodiments in accordance with the present invention, mixing device 100 rich vanadium titanium material entrance 101, sodium agent entrance 102, water to enter Mouth 103 and mixed material outlet 104, and suitable for rich vanadium titanium material, sodium agent and water are carried out into mixed processing, to obtain mixture Material.Obtain rich vanadium titanium mill specifically, selecting technique to handle vanadium titano-magnetite progress using gas base directly reducing-mill and select tailings conduct 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 agent Granularity be not particularly restricted, those skilled in the art can be selected according to actual needs, for example can be less than 200 Mesh.Mixing device is also not particularly limited, for example, can be strength batch mixer.Rich vanadium titanium material and sodium agent, water are through mixing device The moisture content of the mixed material of gained is 3-5%.After mixing device mixed processing, rich vanadium titanium material and sodium are remarkably improved The contact area of agent.

According to one embodiment of present invention, the particular type of sodium agent is not particularly restricted, those skilled in the art Member can be selected according to actual needs, according to the present invention a specific embodiment, sodium agent can be selected from sodium carbonate, At least one of sodium sulphate and sodium chloride, preferably sodium carbonate.Thus, be conducive to improving the sodium roasting efficiency of rich vanadium titanium material.

According to still a further embodiment, rich vanadium titanium material and the mixing quality ratio of sodium agent are not particularly restricted, Those skilled in the art can be selected according to actual needs, according to the specific embodiment of the present invention, rich vanadium titanium material Mixing quality ratio with sodium agent can be 20：(1-4).Thus, it can further improve the sodium roasting efficiency of rich vanadium titanium material.Hair A person of good sense 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 water-soluble 5 valency barium oxides, can cause the leaching rate of vanadium to decline；And when sodium agent is excessive, the soft of rich-titanium material in roasting process can be caused It is molten, furnace bottom is bonded, while can cause the fluctuation of leaching liquid pH value in vanadium leaching process, waste of resource improves production cost.

Embodiments in accordance with the present invention, shaped device 200 has mixed material entrance 201 and mixing pelletizing outlet 202, mixes Material inlet 201 is closed with mixed material outlet 202 to be connected, and suitable for mixed material is carried out into forming processes, to be mixed Pelletizing.Inventor has found, reason richness vanadium titanium material and sodium agent, relative motion of the mixing pelletizing in whole technique of water composition compared with It is small, thus it is low to the intensity requirement for mixing pelletizing, only need 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, being conducive to cost-effective.

Embodiments in accordance with the present invention, with reference to Fig. 1-2, heat accumulating type rotating bed 300 includes：Rotatable stove bottom 31, annular furnace Thorax 32, partition wall 33, radiant tube heater 34, turn-down rig 35.

According to one embodiment of present invention, the fabric thickness of furnace bottom 31 is not particularly restricted, those skilled in the art Member can be selected according to actual needs, according to the specific embodiment of the present invention, and the fabric thickness of furnace bottom can be 10 ~50mm.Thus, the production capacity of whole technique can be improved while roasting efficiency is improved.Inventor has found, when fabric thickness is low When 10mm, one is influence production efficiency, causes energy loss, increases production cost, and two be that revolving bed discharging spiral can not have Effect discharging, causes material to remain in stove and forms dead material；When fabric thickness is higher than 50mm, oxygen is difficult to gas diffusion to material Heat conduction efficiency is poor in inside, bed, and sodium roasting effect is poor, and the leaching rate to later stage vanadium is adversely affected.

According to still a further embodiment, furnace bottom 31 can be moved in vertical direction.Inventor has found, as furnace bottom exists The movement of vertical direction, can be adjusted height of the radiant tube heater from mixing pelletizing, entered according to fabric thickness different on furnace bottom And ensureing the heat-transfer effect of mixing pelletizing so that rich vanadium titanium material and sodium agent roasting are abundant, improve the sodium roasting of mixing pelletizing Efficiency, and then improve the treatment effeciency of whole technique.

According to still another embodiment of the invention, along the rotation direction of furnace bottom 31, include successively in annular furnace 32 into Expect area 321, preheating zone 322, middle warm area 323, high-temperature region 324 and discharge zone 325.Specifically, the mixing ball obtained by shaped device Group supply to the feed zone in heat accumulating type rotating bed, on rotatable stove bottom after cloth honest material with furnace bottom successively preheated area, Middle warm area and high-temperature region carry out sodium roasting processing, obtain gas after roasting material and reaction.

According to the specific embodiment of the present invention, feed zone 321 is disposed with charging aperture 301, and charging aperture 301 is with mixing Pelletizing outlet 202 is 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 invention, the location arrangements in preheating zone 322 close to feed zone 321 have outlet Mouthfuls 304, and suitable for the gas outlet discharge revolving bed of the preheated area's arrangement of gas after the reaction that obtains calcination in burner hearth.Specifically , gas outlet can be arranged on the roof of preheating zone.

According to the present invention another specific embodiment, in high-temperature region 324 close to discharge zone 325 location arrangements have into Gas port 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 Thus the flow direction of gas and the direction of rotation of rotatable furnace bottom in heat accumulating type rotating bed on the contrary, can accelerate to mix pelletizing Sodium roasting efficiency.Specifically, air inlet can be arranged on the side wall of high-temperature region.

According to still another embodiment of the invention, discharging opening 302 is disposed with discharge zone 325, and is suitable to gained solid Product of roasting discharges revolving bed.

According to another specific embodiment of the present invention, partition wall 33 is arranged between feed zone 321 and discharge zone 325.By This, it is ensured that 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 invention, multiple air hatch 305 can be located at preheating zone 322, middle warm area 323 With high-temperature region 324.Inventor has found, by arranging multiple air hatch in preheating zone, middle warm area and high-temperature region, in real time to preheating Oxygen content in area, middle warm area and high-temperature region is detected and controlled, so that rich vanadium titanium material is carried out under weak oxide atmosphere Sodium roasting, specifically, the oxygen content that air hatch is measured is not less than 6vt%, so as to improve the sodium roasting effect of mixing pelletizing Rate..

According to another specific embodiment of the present invention, multiple air hatch 305 can be arranged in preheating zone 322, middle warm area 323 and high-temperature region 324 furnace roof on.Inventor has found, by setting up multiple air hatch to realize that multiple spot is detected, can be further real When the rich vanadium titanium material sodium roasting process of monitoring atmosphere, to ensure that rich vanadium titanium material carries out sodium roasting under weak oxide atmosphere all the time Burn, and then further improve the efficiency of rich vanadium titanium material sodium roasting, while air hatch is arranged on furnace roof, can conveniently take gas.

According to another specific embodiment of the present invention, the arrangement of multiple air hatch is not particularly restricted, ability Field technique personnel can be selected according to actual needs, according to the specific embodiment of the present invention, against turning for furnace bottom 31 Dynamic direction, multiple air hatch 305 can arranged for interval be in high-temperature region 324, middle warm area 323 and preheating zone 322 successively, and by many On the periphery that the center of circle of individual air hatch 305 is constituted, close to the center of circle and the center of circle of partition wall 33 of the air hatch 305 of discharge zone 325 Angle is in 25~35 degree, preferably 30 degree.Inventor has found, when being separated by angle too small, due to using spiral discharging, sealing effectiveness Difference, discharging gas is easily polluted by extraneous gas, causes oxygen content to fluctuate, and influences accuracy；And when be separated by angle it is excessive when, Roasting high-temperature region will lack enough compositions that gas point characterizes furnace gas of surveying, and the richness to data has an impact.Thus, use The arrangement of the application, it is ensured that it is roasting gas in discharging opening leading portion stove to take gas, and test point can accurately reflect stove Composition of gases within.

According to another specific embodiment of the present invention, the position relationship of two neighboring air hatch 305 is not limited especially System, those skilled in the art can be selected according to actual needs, according to the specific example of the present invention, by multiple On the periphery that the center of circle of air hatch 305 is constituted, the central angle between the center of circle of two neighboring air hatch 305 can be 25~35 Degree, preferably 30 degree.Inventor is had found, other arrangements card furnace gas can be significantly better than using the arrangement of the application Effective monitoring of atmosphere (data point is enough).

According to still another embodiment of the invention, the layout area of radiant tube heater 34 is not particularly restricted, ability The technical staff in domain can be selected according to actual needs, according to the specific embodiment of the present invention, radiant tube heater 34 can be arranged in preheating zone 322, middle warm area 323 and high-temperature region 324.According to the specific example of the present invention, heat accumulating type rotation Rotated bed 300 can include multiple radiant tube heaters 34, and multiple radiant tube heaters 34 are arranged in preheating zone 322, middle warm area 323 On the annular inner wall of the correspondence annular furnace of high-temperature region 324.Inventor has found, by preheating zone, middle warm area and high-temperature region cloth Put radiant tube heater, it is ensured that the uniformity in temperature field, be remarkably improved the sodium roasting efficiency of rich vanadium titanium material, and radiate Pipe heater provides the flue gas and annular furnace in roasting institute calorific requirement, radiant tube by way of burn combustible gas is with heat radiation Dust content is relatively low in interior atmosphere isolation, the fault rate and gained product of roasting so as to reduce device.

According to still another embodiment of the invention, the concrete arrangement of turn-down rig 35 is not particularly restricted, ability The technical staff in domain can be selected according to actual needs, and according to the specific embodiment of the present invention, turn-down rig 35 can To be arranged in preheating zone 322, middle warm area 323 and high-temperature region 324.Specifically, the electricity outside the two ends of turn-down rig and annular furnace Machine is connected, and turn-down rig can in the vertical direction do short-distance movement, can be according to the cloth bed of material on furnace bottom in actual production Thickness is lifted.Thus, by using turn-down rig, oxygen is conducive to enter inside the bed of material, so as to significantly improve rich vanadium titanium The sodium roasting effect of material.

According to the specific embodiment of the present invention, the quantity of turn-down rig 35 and specific position are not limited especially System, those skilled in the art can be selected according to actual needs, for example, can include multiple turn-down rigs 35, stirring dress Put 35 can arranged for interval is in preheating zone 322, middle warm area 323 and high-temperature region 324 successively, and two adjacent turn-down rigs 35 Between central angle can be 45~55 degree, preferably 50 degree.Inventor has found, is turned over by being evenly arranged in heat accumulating type rotating bed Expect device, be advantageously implemented mixing pelletizing uniformly and sufficiently in weak oxygen atmosphere, and then realize rich vanadium titanium material sodium roasting Burn abundant, while improving the roasting efficiency of rich vanadium titanium material.And the selection of two neighboring turn-down rig interval angles mainly considers The demand of different firing stages, the main purpose that preheating zone carries out 1 stirring is in order to the moisture in material can be waved in time Hair falls, it is to avoid warm area causes the explosion of type ball during material web water enters, and turning in middle warm area and high-temperature region progress 4 times or so Material, main cause is in order to promote the sodium roasting of rich vanadium titanium material, to make the fully oxidized sodium of low price barium oxide in material be 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 crush, Dust is formed, gas dust remover load is increased, and to be separated by angle larger for turn-down rig, i.e. turn-down rig arrangement is less, can cause Material sodiumizing oxidizing roasting is insufficient, reduces 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, sequentially pass through preheating zone in annular furnace, in Warm area and high-temperature region carry out the radiant tube heater in sodium roasting, heat accumulating type rotating bed by being arranged on annular furnace inwall 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 two 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 conducive to mixing pelletizing to be heated evenly, and is on the one hand conducive to mixing 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 the rich vanadium titanium material of raising, 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.All the time the gas for having weak oxygen atmosphere in period, annular furnace flows, gas (oxygen Or oxygen-enriched air) entering annular furnace from air inlet of the high-temperature region close to discharge zone, gas ensures that its pressure is before stove is entered 0.15-0.17MPa, temperature is 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 and the rotation direction of furnace bottom are opposite.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 be not less than 6vt%, it is reacted after, gas after being reacted, gas is arranged at preheating zone going out close to feed zone after reaction Gas port is discharged.

Specifically, being 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, it is also water miscible, its reaction is as follows：

4NaCl+2H₂O+V₂O₃=Na₄V₂O₇+4HCl

Sodium roasting uses sodium salt, it would however also be possible to employ Na₂CO₃Or Na₂SO₄, its reaction is as follows：

Na₂CO₃+V₂O₃+O₂=2NaVO₃+CO₂

Na₂SO₄+V₂O₃+1/2O₂=2NaVO₃+SO₂

Embodiments in accordance with the present invention, water quenching-separative element 400 has roasting material inlet 401, water inlet 402, containing vanadium Taphole 403 and rich titanium sludge outlet 404, roasting material inlet 401 is connected with discharging opening 302, and is suitable to water and roasting Material carries out water quenching and separating treatment successively, to obtain containing vanadium solution and rich titanium filter residue.Specifically, water quenching-separative element is Roasting material in the combined apparatus of granulating unit and separator, heat accumulating type rotating bed after the completion of sodium roasting goes out through spiral Material, high-temperature roasting material directly carries out water quenching, the crystal formation of roasting material can be destroyed, in order to improve the leaching efficiency of vanadium, during leaching The agitating mode being combined using ultrasonic wave plus mechanical agitation, 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 obtained containing vanadium Solution and rich titanium filter residue, can be used for after further producing product containing vanadium, rich titanium filter residue drying that rich titanium can be prepared as containing vanadium solution Material.

Embodiments in accordance with the present invention, with reference to Fig. 3, the system of the rich vanadium titanium material of above-mentioned processing further comprises：Dewatered clean Oxygenating unit 500.

Embodiments in accordance with the present invention, dewatered clean oxygenating unit 500 has air intake 501, oxygen intake 502, impurity Gas outlet 503 and mixed gas outlet 504, gas outlet 304 are connected with air intake 501, air inlet 303 and mixed gas outlet 504 are connected, and suitable for feeding oxygen after qi exhaustion Water warfare after the reaction that obtains heat accumulating type rotating bed, 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 Purified, dehydration, oxygenation and to be heated to be pressure be that 0.15-0.17MPa, temperature are 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, is used as mixing pelletizing sodium The reaction gas of roasting, thus, can be achieved gas in heat accumulating type rotating bed and recycles, 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 and carry out waste heat time Receive, one-time dedusting is carried out 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.

Sodium agent is by taking NaCl as an example, and the baking tail gases discharged by heat accumulating type rotating bed gas outlet first pass through waste heat boiler progress Waste heat recovery, one-time dedusting is carried out by electrostatic precipitator, and 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, and 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.

As described above, processing system according to embodiments of the present invention can have the advantages that selected from least one following：

Processing system according to embodiments of the present invention carries out the sodium roasting of rich vanadium titanium material using heat accumulating type rotating bed, due to It is radiant tube radiant heat transfer, furnace gas flow is small, and airborne dust is few, it is not necessary to be equipped with large-scale cleaner, investment reduction.

Processing system revolving bed bed bottom top according to embodiments of the present invention is provided with turn-down rig, is conducive to oxygen to enter pan feeding Layer is internal, effectively improves the sodium roasting effect of material.

Radiant tube is distributed with inside processing system revolving bed according to embodiments of the present invention, and furnace bottom can be moved in vertical direction It is dynamic, regulation radiant tube from the bed of material with a distance from, increase radiant heat transfer efficiency.

Processing system furnace gas according to embodiments of the present invention can be recycled after being handled through removal of impurities, reduce waste gas Discharge.

Processing system high temperature discharging according to embodiments of the present invention directly carries out water quenching, and the crystal formation of destruction roasting material is former The agitating mode being combined when mesh >=80% of material granularity -300 and leaching using ultrasonic wave+mechanical agitation, improves leaching efficiency, will Leaching time foreshortens to 1.5h by 2h, improves production efficiency.

Processing system process program pelletizing relative motion according to embodiments of the present invention is smaller, requires low to pellet strength, Binding agent need not be matched somebody with somebody outside, it is cost-effective.

In another aspect of the invention, it is rich that the present invention proposes a kind of system processing using the rich vanadium titanium material of above-mentioned processing The method of vanadium titanium material, embodiments in accordance with the present invention, with reference to Fig. 4, this method includes：

S100：Rich vanadium titanium material, sodium agent and water are supplied into mixing device and carries out mixed processing

In the step, rich vanadium titanium material, sodium agent and water are supplied into mixing device and carries out mixed processing, to be mixed Compound material.Obtain rich vanadium titanium mill specifically, selecting technique to handle vanadium titano-magnetite progress using gas base directly reducing-mill and select 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 actual needs, for example, can be small In 200 mesh.Mixing device is also not particularly limited, for example, 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 still a further embodiment, rich vanadium titanium material and the mixing quality ratio of sodium agent are not particularly restricted, Those skilled in the art can be selected according to actual needs, according to the specific embodiment of the present invention, rich vanadium titanium material Mixing quality ratio with sodium agent can be 20：(1-4).Thus, it can further improve the sodium roasting efficiency of rich vanadium titanium material.Hair A person of good sense 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 water-soluble 5 valency barium oxides, can cause the leaching rate of vanadium to decline；When sodium agent is excessive, the soft heat of rich-titanium material in roasting process can be caused, Furnace bottom is bonded, while can cause the fluctuation of leaching liquid pH value in vanadium leaching process, waste of resource improves production 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 relative motion of the mixing pelletizing that reason richness vanadium titanium material and sodium agent, water are constituted in whole technique is smaller, therefore to mixed The intensity requirement for closing 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 conducive 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 is 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.

The 2NaCl+1.5O when lacking vapor in reaction₂+V₂O₃=2NaVO₃+2Cl₂

4NaCl+2H₂O+V₂O₃=Na₄V₂O₇+4HCl

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 is separated (suction filtration) to mixed liquor after terminating, and is obtained containing vanadium solution and richness titanium filter residue, It can be used for after further producing product containing vanadium, rich titanium filter residue drying that rich-titanium material can be prepared as containing vanadium solution.

Embodiments in accordance with the present invention, with reference to Fig. 5, the method for the rich vanadium titanium material of above-mentioned processing further comprises：

S500：Gas is supplied after the reaction that S300 is obtained feeds oxygen into dewatered clean oxygenating unit after imurity-removal gas

Gas is supplied 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 Gas is purified after reaction obtained by revolving bed, dehydration, oxygenation and to be heated to be pressure be that 0.15-0.17MPa, temperature are 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 recycles, reduces 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, and gas removes removing carbon dioxide through MDEA solution, gas after drying Body is passed through in heat accumulating type rotating bed with oxygen pressurization.

Below with reference to specific embodiment, present invention is described, it is necessary to which explanation, these embodiments are only description Property, without limiting the present invention in any way.

Embodiment 1

Granularity is not more than the accounting more than 80% of 320 mesh rich vanadium titanium material and granularity be less than the sodium carbonate of 200 mesh according to Mixing quality compares 20：2 carry out dispensing, 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 The mixing pelletizing that the porosity is 21% is obtained after 5mm oblate spheroid, 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 is 30mm, mixing pelletizing under the rotation at rotatable stove bottom, sequentially pass through preheating zone in annular furnace, in Warm area and high-temperature region carry out the radiant tube heater in sodium roasting, heat accumulating type rotating bed by being arranged on annular furnace inwall 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 is rotated, 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 is roasted in sodium Sinter after 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.In period, annular furnace all the time The gas for having weak oxygen atmosphere flows, and gas enters annular furnace from air inlet of the high-temperature region close to discharge zone, gas enter stove it Preceding its pressure of guarantee is 0.15MPa, and temperature is 650 degrees Celsius, and oxygen content is 15vt%, and 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 of the gas in detection burner hearth is 8-10%, it is reacted after, 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 are simultaneously heated after boosting is the gas that 0.15MPa, temperature are 650 degrees Celsius, oxygen content is 15vt%, are returned To heat accumulating type rotating bed, the reaction gas of mixing pelletizing sodium roasting is used as.

Roasting material after the completion of sodium roasting is through spiral discharging, and high-temperature roasting material directly carries out water quenching, adopted 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 leaching Temperature when taking is 95 degrees Celsius, and leaching time is 90min, and leaching carries out suction filtration after terminating to mixed liquor, obtains containing vanadium solution It with rich titanium filter residue, can be used for after further producing product containing vanadium, rich titanium filter residue drying that rich-titanium material, vanadium can be prepared as containing vanadium solution Extraction rate reaches 92.8%.

Embodiment 2

Granularity is not more than the accounting more than 80% of 320 mesh rich vanadium titanium material and granularity be less than the sodium carbonate of 200 mesh according to Mixing quality compares 20：4 carry out dispensing, 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 The mixing pelletizing that the porosity is 21% is obtained after 5mm oblate spheroid, 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 is 50mm, mixing pelletizing under the rotation at rotatable stove bottom, sequentially pass through preheating zone in annular furnace, in Warm area and high-temperature region carry out the radiant tube heater in sodium roasting, heat accumulating type rotating bed by being arranged on annular furnace inwall 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 is rotated, 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 is roasted in sodium Sinter after 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.Begin in period, annular furnace The gas for having weak oxygen atmosphere eventually flows, and gas enters annular furnace from air inlet of the high-temperature region close to discharge zone, and gas is entering stove It is 0.16MPa to ensure its pressure before, and temperature is 850 degrees Celsius, and oxygen content is 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 of the gas in detection burner hearth is 10-12%, it is reacted after, gas after react reacts 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 that 0.15MPa, temperature are 650 degrees Celsius, after oxygen content is 18vt%, are returned It is back in heat accumulating type rotating bed, is used as the reaction gas of mixing pelletizing sodium roasting.

Roasting material after the completion of sodium roasting is through spiral discharging, and high-temperature roasting material directly carries out water quenching, adopted 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 leaching Temperature when taking is 95 degrees Celsius, and leaching time is 90min, and leaching carries out suction filtration after terminating to mixed liquor, obtains containing vanadium solution It with rich titanium filter residue, can be used for after further producing product containing vanadium, rich titanium filter residue drying that rich-titanium material, vanadium can be prepared as containing vanadium solution Extraction rate reaches 94.2%.

Embodiment 3

Granularity is not more than the accounting more than 80% of 320 mesh rich vanadium titanium material and granularity be less than the sodium chloride of 200 mesh according to Mixing quality compares 20：4 carry out dispensing, 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 The mixing pelletizing that the porosity is 21% is obtained after 5mm oblate spheroid, drying.

Roasting material after the completion of sodium roasting is through spiral discharging, and high-temperature roasting material directly carries out water quenching, adopted 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, and leaching time is 90min, and leaching carries out suction filtration after terminating to mixed liquor, obtains molten containing vanadium Liquid and rich titanium filter residue, can be used for after further producing product containing vanadium, rich titanium filter residue drying that rich-titanium material can be prepared as containing vanadium solution, Vanadium extraction rate reaches 91.6%.

Embodiment 4

Granularity is not more than the accounting more than 80% of 320 mesh rich vanadium titanium material and granularity be less than the sodium sulphate of 200 mesh according to Mixing quality compares 20：4 carry out dispensing, 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 The mixing pelletizing that the porosity is 21% is obtained after 5mm oblate spheroid, 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 is 50mm, mixing pelletizing under the rotation at rotatable stove bottom, sequentially pass through preheating zone in annular furnace, in Warm area and high-temperature region carry out the radiant tube heater in sodium roasting, heat accumulating type rotating bed by being arranged on annular furnace inwall 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 is rotated, 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 is roasted in sodium Sinter after 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.Begin in period, annular furnace The gas for having weak oxygen atmosphere eventually flows, and gas enters annular furnace from air inlet of the high-temperature region close to discharge zone, and gas is entering stove It is 0.16MPa to ensure its pressure before, and temperature is 850 degrees Celsius, and oxygen content is 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 of the gas in detection burner hearth is 12-13%, it is reacted after, gas after react reacts 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 that 0.15MPa, temperature are 650 degrees Celsius, after oxygen content is 18vt%, are returned It is back in heat accumulating type rotating bed, is used as the reaction gas of mixing pelletizing sodium roasting.

Roasting material after the completion of sodium roasting is through spiral discharging, and high-temperature roasting material directly carries out water quenching, adopted 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 leaching Temperature when taking is 95 degrees Celsius, and leaching time is 90min, and leaching carries out suction filtration after terminating to mixed liquor, obtains containing vanadium solution It with rich titanium filter residue, can be used for after further producing product containing vanadium, rich titanium filter residue drying that rich-titanium material, vanadium can be prepared as containing vanadium solution 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 to combine specific features, structure, material or the spy that the embodiment or example are described Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification Close and combine.

Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims

1. a kind of system for handling rich vanadium titanium material, it is characterised in that including：

Mixing device, the mixing device has rich vanadium titanium material entrance, sodium agent entrance, water inlet and mixed material outlet；

Shaped device, the shaped device has mixed material entrance and the outlet of mixing pelletizing, the mixed material entrance and institute Mixed material outlet is stated to be connected；

Rotatable stove bottom；

Annular furnace, along the rotation direction of the furnace bottom, includes feed zone, preheating zone, middle temperature successively in the annular furnace Area, high-temperature region and discharge zone；

Water quenching-separative element, the water quenching-separative element has roasting material inlet, water inlet, containing vanadium solution outlet and rich titanium Sludge outlet, the roasting material inlet is connected with the discharging opening.

2. system according to claim 1, it is characterised in that the heat accumulating type rotating bed is heated including multiple radiant tubes Device, the multiple radiant tube heater is arranged on the inwall of the preheating zone, the middle warm area and the high-temperature region.

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 On the periphery that the heart is constituted, the center of circle of air hatch and the central angle of the partition wall close to the discharge zone are in 25~35 degree；

It is optional, on the periphery that the center of circle by the multiple air hatch is constituted, the center of circle of the two neighboring air hatch it Between central angle be 25~35 degree.

4. 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.

5. system according to claim 1, it is characterised in that the fabric thickness of the furnace bottom is 10~50mm；

Optional, the furnace bottom can be moved in vertical direction.

6. 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.

7. a kind of method of the rich vanadium titanium material of system processing described in use claim 1-6, it is characterised in that including：

(1) rich vanadium titanium material, sodium agent and water are supplied and mixed processing is carried out into the mixing device, to obtain mixture Material；

(3) the mixing pelletizing is supplied to the feed zone in the heat accumulating type rotating bed so that the mixing pelletizing is passed through successively The preheating zone, the middle warm area and the high-temperature region carry out sodium roasting processing, while weak oxide gas is entered described in Gas port is supplied to the high-temperature region, obtains gas after roasting material and reaction, the roasting material is discharged through the discharge zone, described Gas is discharged through the gas outlet after reaction, and detects the preheating zone, the middle warm area and institute by the multiple air hatch State oxygen content in high-temperature region；

(4) water and the roasting material are supplied to the water quenching-separative element and carries out water quenching and separating treatment successively, so as to To containing vanadium solution and rich titanium filter residue.

8. method according to claim 7, it is characterised in that further comprise：

(5) gas is supplied into the dewatered clean oxygenating unit after imurity-removal gas after the reaction for obtaining step (3) Oxygen is fed, to obtain mixed gas, and the mixed gas is supplied to the heat accumulating type rotating bed through the air inlet.

9. the method according to claim 7 or 8, it is characterised in that in step (3), what the multiple air hatch was measured Oxygen content is not less than 6v%.

10. method according to claim 9, it is characterised in that in step (3), the gas at the air inlet enters stove Pressure is 0.15~0.17Mpa, and the annular furnace breech pressure is 0.12-0.13MPa.