CN110317959B - Stone coal vanadium ore curing production equipment and stone coal vanadium ore curing production method - Google Patents
Stone coal vanadium ore curing production equipment and stone coal vanadium ore curing production method Download PDFInfo
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- CN110317959B CN110317959B CN201910695912.8A CN201910695912A CN110317959B CN 110317959 B CN110317959 B CN 110317959B CN 201910695912 A CN201910695912 A CN 201910695912A CN 110317959 B CN110317959 B CN 110317959B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/02—Apparatus therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to the technical field of stone coal vanadium ore curing, and discloses stone coal vanadium ore curing production equipment and a stone coal vanadium ore curing production method. Wherein stone coal vanadium ore curing production facility includes: the transmission assembly comprises a transmission belt, a driven wheel, a driving wheel and a driving piece, wherein the transmission belt is arranged on the driving wheel and the driven wheel; the heating and mixing assembly comprises a distributing assembly, a heating furnace assembly and a crushing assembly which are sequentially connected in series; the discharging and collecting assembly is positioned at the downstream of the conveyor belt, one end of the discharging and collecting assembly is abutted against the conveyor belt, and the gas interface assembly is communicated with the heating furnace assembly; a negative pressure collection assembly includes a gas hood configured to recover acid mist and/or dust. The stone coal vanadium ore curing production equipment provided by the invention not only realizes the continuous production process of mixing, heating and crushing collection of stone coal and concentrated sulfuric acid or stone coal, concentrated sulfuric acid and water, but also can realize the collection of acid mist and/or dust generated in the production process, and reduces environmental pollution.
Description
Technical Field
The invention relates to the technical field of stone coal vanadium ore curing, in particular to stone coal vanadium ore curing production equipment and a stone coal vanadium ore curing production method.
Background
Vanadium metal is widely applied in the fields of iron and steel, metallurgy, chemical industry, new energy and the like. Stone coal is a black carbon-containing shale which is formed by piling up light sea lower bacteria algae under the reducing condition after death. Besides siliceous, stone coal often contains vanadium, stone coal vanadium ore accounts for 30% of the total production raw materials of vanadium products in China, and is an important production raw material of vanadium products in China.
The current method for extracting vanadium from stone coal vanadium ores mainly comprises two main types: roasting and acid leaching. The traditional vanadium extraction method of stone coal vanadium ore is a sodium roasting method, the production flow of the method is simple, the process technology is mature, but the problems of low recovery rate of vanadium resources, large discharge capacity of three wastes and the like exist, and the existing environmental protection emission standard of China is difficult to be satisfied. The acid leaching method mainly comprises a direct acid leaching method and a sulfuric acid curing method, is energy-saving and clean, avoids the problems of a large amount of waste gas and the like generated by the traditional roasting method, and has good application prospect. The direct acid leaching method is only suitable for treating weathered stone coal, and has great extraction difficulty on primary stone coal with vanadium mainly existing in mica aluminosilicate minerals, while the sulfuric acid curing method can effectively treat the stone coal, thereby improving the leaching rate of vanadium.
Chinese patent CN105483398A proposes a method for extracting vanadium from vanadium-containing minerals by curing, firstly crushing stone coal, grinding to 5mm, respectively adding 8% of water, 1% of phosphoric acid and 16% of concentrated sulfuric acid, curing at 105 ℃ for 24 hours, leaching the clinker for 2 hours at a liquid-solid ratio of 2:1, wherein the leaching rate of vanadium is more than 85%. Chinese patent CN102912123A proposes a method for decomposing stone coal vanadium ore by curing sulfuric acid, firstly grinding stone coal to-74 mu m, then adding 3% -8% of water, 3% -8% of sodium sulfate and 15% -30% of concentrated sulfuric acid, finally utilizing the concentrated sulfuric acid to heat when meeting water, curing for 12-48 h under the condition of heat preservation, wherein clinker is leached for 2-10 h at the temperature of 85-100 ℃ at the liquid-solid ratio of 1.5:1-3:1, and the leaching rate of vanadium is more than 80%. The Chinese patent CN205368457U proposes a movable material mixing and distributing system for extracting mineral components by a concentrated sulfuric acid curing method, which comprises a dry material conveying part, a movable material mixing part, a water and acid access part, and utilizes the existing equipment and technology to provide a movable material mixing and distributing system for transferring, mixing and mixing materials in a certain space and distributing materials in time while mixing materials, so that the time of exposing the mixture to the atmosphere is shortened, the hydration heat of the concentrated sulfuric acid is fully utilized, the advantages of evenly mixing materials, heat preservation and conveying are achieved, and the control problem of the curing process is not solved.
At present, the sulfuric acid curing process is intermittent operation, the production process condition is difficult to control, and the production efficiency is low. And the acid mist generated in the curing process of stone coal and sulfuric acid cannot be effectively collected, so that the sulfuric acid is wasted and the environment is easily polluted. Therefore, there is a need for a stone coal curing apparatus to solve the above problems.
Disclosure of Invention
Based on the above, the invention aims to provide a stone coal vanadium ore curing production device and a stone coal vanadium ore curing production method, wherein the stone coal vanadium ore curing production device can effectively collect acid mist generated in stone coal and sulfuric acid curing processes.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a stone coal vanadium ore curing production device, comprising:
the transmission assembly comprises a transmission belt, a driven wheel, a driving wheel and a driving piece, wherein the transmission belt is arranged on the driving wheel and the driven wheel, and the driving piece can drive the driving wheel to drive the driven wheel to rotate;
the heating and mixing assembly comprises a material distribution assembly, a heating furnace assembly and a crushing assembly which are sequentially connected in series and the conveyor belt sequentially passes through, and the heating and mixing assembly is configured to mix, heat and crush stone coal and concentrated sulfuric acid or stone coal, concentrated sulfuric acid and water;
a discharge collection assembly downstream of the conveyor belt and having one end abutting the conveyor belt, and a gas interface assembly in communication with the heating furnace assembly and configured to collect acid mist and/or dust within the heating furnace assembly;
the device comprises at least two gas collecting hoods, wherein one gas collecting hood is arranged opposite to the gas interface assembly, one gas collecting hood is arranged opposite to the discharging and collecting assembly, and the gas collecting hoods are configured to recycle acid mist and/or dust.
As a preferred scheme of stone coal vanadium ore curing production equipment, stone coal vanadium ore curing production equipment still includes the frame, the heating furnace subassembly includes boiler tube, heat-generating body, heat preservation spare, the boiler tube is established in the frame, the heat-generating body is located the inner wall of boiler tube, the conveyer belt runs through the boiler tube sets up, the heat preservation spare parcel is in the outside of boiler tube.
As an optimized scheme of stone coal vanadium ore curing production facility, the gas interface subassembly includes toper induced duct, governing valve, collection dirt fill and blowoff valve, toper induced duct with the boiler tube intercommunication, the gas collecting hood is located directly over the toper induced duct, the governing valve is located on the connecting pipe way of toper induced duct top and be configured to the size of regulation amount of wind, the blowoff valve is established the exit of collection dirt fill.
As an optimized scheme of stone coal vanadium ore curing production equipment, stone coal vanadium ore curing production equipment still includes tensioning assembly, tensioning assembly includes tensioning dolly and counterweight, from the driving wheel locate on the tensioning dolly, the tensioning dolly is located in the frame, counterweight with tensioning dolly is connected and unsettled the setting, the counterweight is configured to can drag the tensioning dolly makes the tensioning dolly is followed the length direction of frame removes.
As an optimized scheme of stone coal vanadium ore curing production facility, the collection subassembly of unloading includes along the delivery direction of conveyer belt sets gradually go out the hopper and scrape the material brush, go out the upper end of hopper with on the action wheel the conveyer belt butt, the clinker on the conveyer belt can get into go out the hopper, scrape the material brush and be configured to scrape down the clinker of adhesion on the conveyer belt.
As a preferable scheme of the stone coal vanadium ore curing production equipment, the material distribution assembly comprises a feed hopper, a feeding part, a distributing device, a material recovery part, a scraping plate and a scale, wherein the feeding part is positioned at an outlet of the feed hopper and is configured to convey slurry in the feed hopper into the distributing device, the distributing device is positioned below the feed hopper, the scraping plate is positioned in the distributing device and is positioned right above the conveyor belt, the scraping plate is configured to enable a thickness value of the slurry on the conveyor belt to be not larger than a distance value of the conveyor belt and the scraping plate, the scale is arranged outside the distributing device and is configured to display a distance between the scraping plate and the conveyor belt, and the material recovery part is positioned below the distributing device and is configured to recover the dropped slurry.
As a stone coal vanadium ore curing production facility's preferred scheme, broken subassembly is including having broken piece and the while is located broken intracavity and follow tow boat, pinch roller and the crushing roller that the direction of movement of conveyer belt distributes in proper order, the tow boat is located the below of conveyer belt and protruding the locating the conveyer belt, the conveyer belt is walked around the tow boat, the pinch roller is located the top of conveyer belt and can be right the grog on the conveyer belt is once broken, the crushing roller is used for crushing again grog on the conveyer belt.
As a preferred scheme of stone coal vanadium ore curing production facility, negative pressure collection subassembly still includes absorption tower, draught fan and circulating pump, the absorption tower is from supreme first distributing plate, first filler, first nozzle, second distributing plate, second filler, second nozzle and defroster of being equipped with down in proper order, first distributing plate with the gas collecting channel intercommunication, the absorption tower bottom is equipped with the circulation groove, first nozzle with the second nozzle all with the circulation groove intercommunication, the draught fan with the defroster intercommunication, the defroster is configured to the entrapment liquid in the absorption tower and pass through the draught fan discharges, the one end of circulating pump with the circulation groove is connected, the other end simultaneously with first nozzle with the second nozzle intercommunication.
As a preferable scheme of the stone coal vanadium ore curing production equipment, the stone coal vanadium ore curing production equipment further comprises a leveling piece and a deviation rectifying piece, the conveying belt penetrates through the leveling piece, the leveling piece is configured to flatten the conveying belt, and the deviation rectifying piece is configured to adjust the parallelism of the driving wheel and the driven wheel so that the conveying belt is clung to the driving wheel and the driven wheel.
The stone coal vanadium ore curing production method adopts any one of the stone coal vanadium ore curing production equipment, and comprises the following steps:
step one, adding stone coal and concentrated sulfuric acid into the distribution assembly to be mixed and reacted to form slurry, or adding stone coal, concentrated sulfuric acid and water into the distribution assembly to be mixed and reacted to form slurry, wherein the distribution assembly distributes the slurry on the conveyor belt;
step two, the slurry moves along the conveying direction of the conveying belt along with the conveying belt, and the heating furnace component heats the slurry to enable the slurry to undergo curing reaction to form clinker;
step three, the clinker is crushed by the crushing assembly;
step four, the unloading and collecting assembly collects the crushed clinker;
in the first step, the second step, the third step and the fourth step, the acid mist and/or dust are collected in real time against the gas collecting hood arranged on the gas interface and the discharging and collecting assembly.
The beneficial effects of the invention are as follows: according to the stone coal vanadium ore curing production equipment provided by the invention, the continuous production process of mixing, heating and crushing collection of stone coal and concentrated sulfuric acid or stone coal, concentrated sulfuric acid and water is realized through the transmission assembly and the heating mixing assembly, and the collection of acid mist and/or dust generated in the production process can be realized through the gas interface assembly and the negative pressure collecting assembly, so that the production efficiency is improved, and the environmental pollution is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of stone coal vanadium ore curing production equipment provided by an embodiment of the invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A of an embodiment of the present invention;
fig. 3 is a partial enlarged view of fig. 1 at B, in accordance with an embodiment of the present invention.
In the figure:
11-conveyor belt, 12-driven wheel, 13-driving wheel, 14-driving member, 21-distributing member, 211-feeding hopper, 212-feeding member, 213-distributing member, 214-material recovering member, 215-scraping plate, 216-scale, 22-heating furnace member, 221-furnace tube, 222-heating body, 223-heat-preserving member, 2231-furnace lining, 2232-furnace shell, 23-crushing member, 231-crushing member, 232-tug wheel, 233-pinch roller, 234-crushing roller, 3-discharging collecting member, 31-discharging hopper, 32-scraping brush, 33-receiving tray, 34-discharging driving member, 4-gas interface member, 41-induced duct, 42-regulating valve, 43-dirt collecting hopper, 44-blow-down valve, 5-negative pressure collecting member, 51-gas collecting hood, 52-absorbing tower, 53-induced draft fan, 54-first distributing plate, 55-first packing, 56-first nozzle, 57-second distributing plate, 58-second packing, 59-second nozzle, 510-distributor, 511-circulating pump, 6-7-first nozzle, 57-second distributing plate, 58-second packing, 59-second nozzle, 510-11-tensioning member, 511-circulating pump, 6-negative pressure collecting member, 8-negative pressure collecting member, 9-suction drum, 82-suction drum, 8-negative pressure collecting member, 82-suction drum, 8-suction drum, 82-suction drum, and sealing member.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiment provides stone coal vanadium ore curing production equipment, as shown in fig. 1 to 3, the equipment comprises a transmission assembly, a heating mixing assembly, a gas interface assembly 4, a discharging collection assembly 3 and a negative pressure collection assembly 5, wherein the transmission assembly comprises a transmission belt 11, a driven wheel 12, a driving wheel 13, a pinch roller 10 and a driving piece 14, the transmission belt 11 is a steel belt, the transmission belt 11 is arranged on the driving wheel 13 and the driven wheel 12, the driving piece 14 can drive the driving wheel 13 to drive the driven wheel 12 to rotate, the driving piece 14 in the embodiment is a motor and a transmission reducer, the motor drives the transmission reducer to rotate, and the transmission reducer drives friction generated by the driving wheel 13 to drag. The pinch roller 10 is located below the driving wheel 1 and can compress the driving wheel 13, and the purpose of compressing the pinch roller 10 and the driving wheel 13 is to improve the friction force between the conveying belt 11 and the driving wheel 13 and prevent the conveying belt 11 from slipping. The heating and mixing assembly comprises a distributing assembly 21, a heating furnace assembly 22, a crushing assembly 23 and a discharging and collecting assembly 3 which are connected in series in sequence and the conveyor belt 11 sequentially passes through, and the heating and mixing assembly is configured to mix, heat and crush stone coal and concentrated sulfuric acid. Of course, in other embodiments of the present invention, the raw materials to be processed are not limited to the stone coal and the concentrated sulfuric acid of the present embodiment, but may be water, stone coal, and concentrated sulfuric acid or at least two other raw materials, which are specifically set according to actual needs.
Further, the discharge and collection assembly 3 of the present embodiment is located downstream of the conveyor belt 11 and has one end abutting the conveyor belt 11 so that the crushed clinker enters the discharge and collection assembly 3. The gas interface assembly 4 is in communication with the furnace assembly 22 and is configured to collect acid mist and/or dust within the furnace assembly 22. The negative pressure collection assembly 5 comprises at least two gas collection hoods 51, wherein one gas collection hood 51 is arranged opposite to the gas interface assembly 4 and one gas collection hood 51 is arranged opposite to the discharge collection assembly 3, and the gas collection hood 51 is configured to recover acid mist and/or dust.
According to the stone coal vanadium ore curing production equipment provided by the embodiment, the continuous production process of mixing, heating and crushing collection of stone coal and concentrated sulfuric acid is realized through the transmission assembly and the heating mixing assembly, and the collection of acid mist and/or dust generated in the production process can be realized through the gas interface assembly 4 and the negative pressure collecting assembly 5, so that the production efficiency is improved, and the environmental pollution is reduced.
As shown in fig. 2, the distributing assembly 21 of the present embodiment includes a feeding hopper 211, a feeding member 212, a distributing member 213, a material recovering member 214, a scraping plate 215 and a scale 216, wherein the feeding hopper 211 is provided with a feeding port for feeding raw materials, the raw materials are stone coal and concentrated sulfuric acid, and the raw materials are primarily mixed in the feeding hopper 211 to form slurry. The feeding member 212 of the present embodiment is a screw feeding member which is located at the outlet of the feed hopper 211 and configured to feed the slurry in the feed hopper 211 into the distributing member 213, and the screw feeding member can achieve uniform feeding of the slurry onto the conveyor belt 11, preventing clogging of the slurry. The distributing device 213 is located below the feeding hopper 211, so as to realize controllable width of the slurry layer. The scraper 215 is located in the distributor 213 and directly above the conveyor belt 11, the scraper 215 is configured to enable the thickness value of the slurry on the conveyor belt 11 to be no greater than the distance value between the conveyor belt 11 and the scraper 215, the scale 216 is arranged outside the distributor 213 and configured to display the distance between the scraper 215 and the conveyor belt 11, and the material recovery member 214 is located below the distributor 213 and configured to recover the dropped slurry.
Specifically, as shown in fig. 1, the gas interface assembly 4 of the present embodiment includes a tapered air guiding pipe 41, a regulating valve 42, a dirt collecting hopper 43, and a blow-down valve 44, wherein the tapered air guiding pipe 41 is communicated with the furnace tube 221, the air collecting hood 51 is disposed directly above the tapered air guiding pipe 41, the regulating valve 42 is disposed on a connecting pipe above the tapered air guiding pipe 41 and is configured to regulate the air volume, the blow-down valve 44 is disposed at an outlet of the dirt collecting hopper 43, and the blow-down valve 44 can discharge dust collected and precipitated from the furnace tube 221.
It should be noted that, the stone coal vanadium ore curing production device of this embodiment further includes a frame 6, as shown in fig. 1, the heating furnace assembly 22 includes a furnace tube 221, a heating element 222, and a heat insulation member 223, the furnace tube 221 is disposed on the frame 6, the heating element 222 is disposed on an inner wall of the furnace tube 221, the conveyor belt 11 is disposed through the furnace tube 221, and the heat insulation member 223 is wrapped outside the furnace tube 221. Specifically, the heating elements 222 of the present embodiment are two heating plates capable of being electrically heated, one heating plate is disposed above the inner wall of the furnace tube 221, and the other heating plate is disposed below the inner wall of the furnace tube 221. The heat preservation member 223 comprises a furnace lining 2231 and a furnace shell 2232, wherein the furnace lining 2231 is wrapped on the outer side of the furnace tube 221, the furnace shell 2232 is wrapped on the outer side of the furnace lining 2231, and the furnace lining 2231 and the furnace shell 2232 play a role in preventing heat generated by the heating element 222 in the furnace tube 221 from being emitted to the external environment.
Further, the heating plate in this embodiment is an iron-chromium-aluminum alloy heating plate, and of course, in other embodiments of the present invention, the heating plate may also be a nichrome heating plate, or a heating plate made of other materials, which is not specifically limited in this embodiment, and is specifically selected according to actual needs. The furnace lining 2231 of the present embodiment is made of a refractory insulating material, such as a refractory insulating brick, a refractory insulating cotton, or a ceramic fiber insulating material, and the present embodiment is not particularly limited thereto, and is specifically selected according to actual needs. The slurry of this embodiment is heat-preserved and cured in the furnace tube 221 to form clinker, and the length of the furnace tube 221 and the electric heating power of the heating plate can be set according to the curing time and curing temperature.
The stone coal vanadium ore curing production equipment of the embodiment further comprises a seal box 7, as shown in fig. 1, the crushing assembly 23 comprises a crushing part 231 with a crushing cavity, and a tug 232, a pressing wheel 233 and a crushing roller 234 which are positioned in the crushing cavity and sequentially distributed along the moving direction of the conveyor belt 11, as shown in fig. 3, the seal box 7 is connected with the crushing part 231, the tug 232 is arranged below the conveyor belt 11 and is convexly arranged on the conveyor belt 11, the conveyor belt 11 bypasses the tug 232, the pressing wheel 233 is arranged above the conveyor belt 11 and can crush the clinker on the conveyor belt 11 once, so that the agglomerated clinker is separated from the conveyor belt 11, the problem that the clinker is adhered to the conveyor belt 11 is solved, the crushing roller 234 is used for crushing the clinker again, the clinker reaches the size of particles which are actually needed, and the additionally arranged seal box 7 avoids the serious dust problem caused by the conventional crushing equipment.
The discharging and collecting assembly 3 of this embodiment includes a discharge hopper 31, a scraping brush 32, a receiving tray 33, a pinch roller and a discharging driving member 34 sequentially arranged along the conveying direction of the conveying belt 11, as shown in fig. 1, the discharging driving member 34 is a discharging motor, the upper end of the discharge hopper 31 is abutted with the conveying belt 11 on the driving wheel 13, in order to reduce flying of dust, the discharge hopper 31 is in sealing connection with the conveying belt 11, clinker on the conveying belt 11 can enter the discharge hopper 31, wherein the discharging driving member 34 is connected with the scraping brush 32 and can drive the scraping brush 32 to rotate, the scraping brush 32 is in contact with the conveying belt 11 and can scrape the clinker adhered on the conveying belt 11, and the receiving tray 33 is located under the scraping brush 32 and can recover the dropped clinker. Of course, in other embodiments of the present invention, the discharge driving member 34 is not limited to the discharge motor of this embodiment, but may be a hydraulically driven assembly or a pneumatically driven assembly, and the specific type of the driving assembly is not particularly limited and is specifically selected according to actual needs.
The negative pressure collecting assembly 5 of this embodiment further includes an absorption tower 52, an induced draft fan 53 and a circulating pump 511, as shown in fig. 1, the absorption tower 52 is sequentially provided with a first distribution plate 54, a first filler 55, a first nozzle 56, a second distribution plate 57, a second filler 58, a second nozzle 59 and a demister 510 from bottom to top, the first distribution plate 54 is communicated with the gas-collecting hood 51, a circulating tank is provided at the bottom of the absorption tower 52, spraying liquid is provided in the circulating tank, the first nozzle 56 and the second nozzle 59 are both communicated with the circulating tank, the induced draft fan 53 is communicated with the demister 510, and the demister 510 is configured to intercept the spraying liquid in the absorption tower 52 and discharge the spraying liquid through the induced draft fan 53. One end of the circulation pump 511 is connected to the circulation tank, and the other end is simultaneously connected to the first nozzle 56 and the second nozzle 59.
Further, the first packing 55 and the second packing 58 are bulk packing such as raschig rings, pall rings, arc saddle rings, and the like, which are not particularly limited in this embodiment. The circulation pump 511 sprays the spray liquid from the absorption circulation tank evenly onto the first filler 55 and the second filler 58 through the first nozzle 56 and the second nozzle 59, and flows downwards along the first filler 55 and the second filler 58, and flows counter-currently with the acid mist and most of dust through the gaps of the first filler 55 and the gaps of the second filler 58, the spray liquid fully contacts the acid mist and most of dust on the surfaces of the first filler 55 and the surfaces of the second filler 58, the acid mist absorbs or neutralizes with the spray liquid, and the dust and liquid drops are agglomerated, so that the acid mist and most of dust enter the circulation tank along with the spray liquid, and the spray liquid is recycled. The tail gas is discharged from the exhaust pipeline through the induced draft fan 53 after the spray liquid is intercepted by the demister 510. The first packing 55, the second packing 58 and the first distribution plate 54 are arranged for redistributing the spray liquid, reducing the influence of the wall flow effect of the downward flow of the spray liquid, and realizing the full contact and reaction of the acid mist, dust and the spray liquid.
The stone coal vanadium ore curing production equipment of the embodiment further comprises a tensioning assembly 8 and a frame 6, as shown in fig. 1, the tensioning assembly 8 comprises a tensioning trolley 81 and a counterweight 82, the driven wheel 12 is arranged on the tensioning trolley 81, the tensioning trolley 81 is arranged on the frame 6, the counterweight 82 is connected with the tensioning trolley 81 and is arranged in a suspended mode, and the counterweight 82 is configured to drag the tensioning trolley 81 to enable the tensioning trolley 81 to move along the length direction of the frame 6. Because the weight of the weight 82 is fixed, when the weight 82 is suspended, the weight 82 has a certain tension to the tensioning trolley 81, and the driven wheel 12 is fixed to the tensioning trolley 81, so that the conveyor belt 11 arranged on the driving wheel 13 and the driven wheel 12 is in a tensioning state.
The stone coal vanadium ore curing production apparatus of the present embodiment further includes a flattening member 91 and a deviation rectifying member 92, as shown in fig. 1, the conveyor belt 11 passing through the flattening member 91, the flattening member 91 being configured to flatten the conveyor belt 11. Specifically, the leveling member 91 includes two leveling units, the distance between which is slightly larger than the thickness of the conveyor belt 11, and the conveyor belt 11 passing through the two leveling units is flattened so that the conveyor belt 11 is maintained at a certain flatness. The deviation rectifying member 92 of the present embodiment is configured to adjust the parallelism of the driving pulley 13 and the driven pulley 12 so that the conveyor belt 11 is brought into close contact with the driving pulley 13 and the driven pulley 12. Specifically, when a part of the conveyor belt 11 deviates from the driving pulley 13 and/or the driven pulley 12, the parallelism of the driving pulley 13 and the driven pulley 12 is adjusted by the deviation correcting member 92, so that the conveyor belt 11 is reset, the contact area between the conveyor belt 11 and the driving pulley 13 and the driven pulley 12 is maximized, the distances from the two sides of the conveyor belt 11 to the two ends of the driving pulley 13 are equal, and the distances from the two sides of the conveyor belt 11 to the two ends of the driven pulley 12 are also equal.
The embodiment also provides a stone coal vanadium ore curing production method, which adopts the stone coal vanadium ore curing production equipment of the embodiment and comprises the following steps:
step one, adding stone coal and concentrated sulfuric acid into a material distribution assembly 21 for mixing to form slurry, or adding stone coal, concentrated sulfuric acid and water into the material distribution assembly 21 for mixing to form slurry, wherein the material distribution assembly 21 distributes the slurry on a conveyor belt 11;
step two, the slurry moves along the conveying direction of the conveying belt 11 along with the conveying belt 11, and the heating furnace assembly 22 heats the slurry to enable the slurry to undergo curing reaction to form clinker;
step three, the clinker is crushed by the crushing assembly 23;
step four, the crushed clinker is collected by a discharging and collecting assembly 3;
wherein, during the production process, the acid mist and/or dust is collected in real time by the gas collecting hood 51 which is arranged opposite to the gas interface and the discharging and collecting assembly 3.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. A stone coal vanadium ore curing production device, which is characterized by comprising:
the transmission assembly comprises a transmission belt (11), a driven wheel (12), a driving wheel (13) and a driving piece (14), wherein the transmission belt (11) is arranged on the driving wheel (13) and the driven wheel (12), and the driving piece (14) can drive the driving wheel (13) to drive the driven wheel (12) to rotate;
the heating and mixing assembly comprises a material distribution assembly (21), a heating furnace assembly (22) and a crushing assembly (23) which are sequentially connected in series and the conveyor belt (11) sequentially passes through, and the heating and mixing assembly is configured to mix, heat and crush stone coal and concentrated sulfuric acid or stone coal, concentrated sulfuric acid and water;
a discharge collection assembly (3) and a gas interface assembly (4), the discharge collection assembly (3) being located downstream of the conveyor belt (11) and having one end abutting the conveyor belt (11), the gas interface assembly (4) being in communication with the heating furnace assembly (22) and configured to collect acid mist and/or dust within the heating furnace assembly (22);
a negative pressure collection assembly (5) comprising at least two gas collection hoods (51), wherein one of the gas collection hoods (51) is arranged opposite to the gas interface assembly (4), one of the gas collection hoods (51) is arranged opposite to the discharge collection assembly (3), and the gas collection hoods (51) are configured to recover acid mist and/or dust;
the stone coal vanadium ore curing production equipment further comprises a frame (6), the heating furnace assembly (22) comprises a furnace tube (221), a heating body (222) and a heat preservation piece (223), the furnace tube (221) is arranged on the frame (6), the heating body (222) is arranged on the inner wall of the furnace tube (221), the conveyor belt (11) penetrates through the furnace tube (221), and the heat preservation piece (223) is wrapped outside the furnace tube (221);
the discharging and collecting assembly (3) comprises a discharging hopper (31) and a scraping brush (32) which are sequentially arranged along the conveying direction of the conveying belt (11), the upper end of the discharging hopper (31) is abutted to the conveying belt (11) on the driving wheel (13), clinker on the conveying belt (11) can enter the discharging hopper (31), and the scraping brush (32) is configured to scrape the clinker adhered on the conveying belt (11).
2. The stone coal vanadium ore curing production device according to claim 1, wherein the gas interface assembly (4) comprises a conical air guiding pipe (41), a regulating valve (42), a dirt collecting hopper (43) and a blow-down valve (44), the conical air guiding pipe (41) is communicated with the furnace tube (221), the gas collecting hood (51) is arranged right above the conical air guiding pipe (41), the regulating valve (42) is arranged on a connecting pipeline above the conical air guiding pipe (41) and is configured to regulate the air quantity, and the blow-down valve (44) is arranged at an outlet of the dirt collecting hopper (43).
3. The stone coal vanadium ore curing production device according to claim 1, further comprising a tensioning assembly (8), wherein the tensioning assembly (8) comprises a tensioning trolley (81) and a weight (82), the driven wheel (12) is arranged on the tensioning trolley (81), the tensioning trolley (81) is arranged on the frame (6), the weight (82) is connected with the tensioning trolley (81) and is suspended, and the weight (82) is configured to drag the tensioning trolley (81) to enable the tensioning trolley (81) to move along the length direction of the frame (6).
4. The stone coal vanadium ore curing production device according to claim 1, wherein the material distribution assembly (21) comprises a feed hopper (211), a feeding member (212), a material distributor (213), a material recycling member (214), a scraper (215) and a scale (216), wherein the feeding member (212) is positioned at an outlet of the feed hopper (211) and is configured to feed slurry in the feed hopper (211) into the material distributor (213), the material distributor (213) is positioned below the feed hopper (211), the scraper (215) is positioned in the material distributor (213) and directly above the conveyor belt (11), the scraper (215) is configured to enable a thickness value of the slurry on the conveyor belt (11) to be no greater than a distance value of the conveyor belt (11) and the scraper (215), the scale (216) is positioned outside the material distributor (213) and is configured to show that the scraper (215) is positioned below the conveyor belt (11), and the material is recycled in a configuration of falling the slurry (214) from the material distributor (213).
5. The stone coal vanadium ore curing production device according to claim 1, wherein the crushing assembly (23) comprises a crushing member (231) with a crushing cavity, a tug (232), a pressing wheel (233) and a crushing roller (234) which are simultaneously positioned in the crushing cavity and are sequentially distributed along the moving direction of the conveyor belt (11), the tug (232) is arranged below the conveyor belt (11) and is convexly arranged on the conveyor belt (11), the conveyor belt (11) bypasses the tug (232), the pressing wheel (233) is arranged above the conveyor belt (11) and can crush clinker on the conveyor belt (11) once, and the crushing roller (234) is used for crushing the clinker on the conveyor belt (11) again.
6. The stone coal vanadium ore curing production device according to claim 1, wherein the negative pressure collecting assembly (5) further comprises an absorption tower (52), an induced draft fan (53) and a circulating pump (511), the absorption tower (52) is sequentially provided with a first distribution plate (54), a first filler (55), a first nozzle (56), a second distribution plate (57), a second filler (58), a second nozzle (59) and a demister (510) from bottom to top, the first distribution plate (54) is communicated with the gas collecting hood (51), a circulating groove is formed in the bottom of the absorption tower (52), the first nozzle (56) and the second nozzle (59) are communicated with the circulating groove, the induced draft fan (53) is communicated with the demister (510), the demister (510) is configured to intercept liquid in the absorption tower (52) and discharge the liquid through the induced draft fan (53), one end of the circulating pump (511) is connected with the circulating groove, and the other end of the circulating pump (511) is simultaneously communicated with the first nozzle (56) and the second nozzle (59).
7. The stone coal vanadium ore curing production device according to claim 1, further comprising a leveling member (91) and a deviation correcting member (92), wherein the conveyor belt (11) passes through the leveling member (91), the leveling member (91) is configured to flatten the conveyor belt (11), and the deviation correcting member (92) is configured to adjust the parallelism of the driving wheel (13) and the driven wheel (12) so that the conveyor belt (11) is in close contact with the driving wheel (13) and the driven wheel (12).
8. A stone coal vanadium ore curing production method, characterized in that the stone coal vanadium ore curing production device according to any one of claims 1 to 7 is adopted, comprising the following steps:
step one, adding stone coal and concentrated sulfuric acid into the distribution assembly (21) to be mixed to form slurry, or adding stone coal, concentrated sulfuric acid and water into the distribution assembly (21) to be mixed to form slurry, wherein the distribution assembly (21) distributes the slurry on the conveyor belt (11);
step two, the slurry moves along the conveying direction of the conveying belt (11) along with the conveying belt (11), and the heating furnace assembly (22) heats the slurry to enable the slurry to undergo curing reaction to form clinker;
step three, the clinker is crushed by the crushing assembly (23);
step four, the unloading and collecting assembly (3) collects the crushed clinker;
in the first step, the second step, the third step and the fourth step, the gas collecting hood (51) which is opposite to the gas interface and the discharging and collecting assembly (3) is used for collecting acid mist and/or dust in real time.
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