CN217947004U - Dust suppression device in sintering batching process - Google Patents

Abstract

The utility model provides a sintering batching in-process dust suppression device which characterized in that: the device comprises a belt conveyor (1), a material guide chute (2) and a material bin (3); the guide chute (2) is hermetically arranged on the belt conveyor (1); the material bin (3) is arranged above the belt conveyor (1), and a discharge hole of the material bin (3) extends into the material guide groove (1). Adopt the baffle box can live the whole sealings of material whereabouts process to prevent that the dust that the material whereabouts in-process produced from raising upward outward, thereby reduce sintering batching in-process post dust concentration, solved the poor problem of sintering batching environment among the prior art.

Description

Dust suppression device in sintering batching process

Technical Field

The utility model relates to a sintering in-process dust suppression device, concretely relates to sintering batching in-process dust suppression device belongs to the dust disposal field.

Background

In the sintering production process, the process flow is as follows: the method comprises the following steps of material preparation, mixing, granulating, sintering, cooling, finishing and finished product preparation, wherein the material preparation is key in the whole process, and not only is the accurate addition of various raw materials such as iron ore powder, return ores, fusing agents, fuels, dedusting ash and the like according to the proportion ensured, but also a certain water content is maintained. Because many ore types are proportioned and many material dropping points are provided, and especially when the fluxing agent, the fuel and the dedusting ash are proportioned, because the granularity is very fine and the moisture content is very low, the raise dust is easy to generate and damage the environment, so the dedusting must be considered to meet the requirement that the post dust is maintained at a certain concentration.

In the existing sintering production process, in order to reduce the post dust concentration in a batching system and improve the environment of a factory, the following measures are mainly taken:

1) And closing the batching plant and closing the dust in the batching plant.

2) The most common method is that a batching dust removal system is arranged, various kinds of dust are collected intensively through air draft by arranging a dust removal cover at a blanking point, and then the dust is removed through a dust remover, and the dust is discharged after the emission standard of flue gas is met.

3) And (5) sprinkling water for dedusting.

However, the existing measures have the following defects:

1) The post environment is very bad, the external environment of the batching plant looks neat, the internal environment of the plant is extremely bad, and post personnel can not go at all, which is not beneficial to production organization.

2) The batching dust removal system is widely used as a common environmental dust removal means, has dust removal universality, but is not strong in pertinence. On one hand, one dust remover corresponds to a plurality of dust removing points of the batching chamber, and once the dust removing air draft is unbalanced or a dust removing pipe is worn through, the dust collecting effect is influenced; on the other hand, for materials such as the fusing agent, the fuel and the dust removal ash, because the granularity is small and the water content is not high, the dust is easy to generate and the dust raising area is large, the dust remover can not effectively adsorb the materials; finally, in order to remove dust, some iron and steel enterprises increase the dust collection air volume and area of the dust remover, which causes the loss of mineral powder to a certain extent, causes inaccurate ingredients and influences the stability of sintered pellet production.

3) The water is sprayed to remove dust, the symptoms are treated, the root causes are not treated, and the modern green enterprise standard is not met. On one hand, the sprinkling can reduce the dust in the batching workshop and increase the humidity of the workshop, but the fallen dust is scattered in the workshop to cause bad ground environment; on the other hand, the water consumption for water sprinkling and dust removal is large, the influence on production organization is caused, the treatment capacity of a sewage system is increased, the loss of mineral powder is caused, the inaccurate water addition in the mixing process is caused, and the stability of the sintered pellet production is influenced.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the above-mentioned prior art, the utility model provides a sintering batching in-process dust suppression device. The device comprises a belt conveyor, a guide chute and a material bin, wherein the guide chute is hermetically arranged on the belt conveyor. When the sintering raw materials fall from the material bin to the belt conveyor and are sintered and proportioned in the conveying process, the material guide chute can completely seal the falling process of the materials so as to prevent the dust generated in the falling process of the materials from rising outwards, thereby reducing the post dust concentration in the sintering and proportioning process and solving the problem of poor sintering and proportioning environment in the prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme as follows:

a dust suppression device in a sintering and batching process comprises a belt conveyor, a material guide chute and a material bin. The guide chute is hermetically arranged on the belt conveyor. The material bin is arranged above the belt conveyor, and a discharge port of the material bin extends into the guide chute.

In the present invention, the device further comprises a suppression device. The suppression device comprises an atomization device, and the atomization device is arranged on the guide chute and is positioned at the downstream of the material bin. The atomizing device is provided with a nozzle. The nozzle extends into the guide chute and is arranged towards the material direction on the belt conveyor.

The utility model discloses in, the material storehouse includes mixing iron ore storehouse, flux storehouse, returns ore deposit storehouse, bunker. The lower part of each material bin is connected with a discharging chute. According to the material trend, the blending iron ore bin, the flux bin, the ore return bin and the fuel bin are sequentially arranged on the belt conveyor, and the discharging chutes below the material bins extend into the guide chute.

The utility model discloses in, all be equipped with suppression device in the low reaches position of the unloading chute that the baffle box is upper, every material storehouse is connected. Preferably, m suppressing devices are provided on the same cross section of the guide chute. The m suppressing devices form a first suppressing device group as a whole. Wherein m is 1 to 10, preferably 2 to 8.

Preferably, n first suppression device groups are sequentially arranged at the downstream of each material bin according to the material trend. Wherein n is 1 to 6, preferably 2 to 4.

The utility model discloses in, be provided with suppression device frame on the band conveyer, be located the low reaches position of baffle box. The suppression device frame is provided with a suppression device. The nozzle of the inhibiting device is arranged towards the material direction on the belt conveyor.

Preferably, j suppression devices are arranged on the suppression device frame. The j restraining devices on the restraining device frame form a second restraining device group as a whole. Wherein j is 1 to 10, preferably 2 to 8.

Preferably, k suppression device frames are sequentially arranged at the downstream of the guide chute according to the material trend, and each suppression device frame is provided with the second suppression device group. Wherein k is 1 to 12, preferably 2 to 10.

The utility model discloses in, be equipped with air inlet and water inlet on atomizing device's the nozzle. The air inlet is connected with a nitrogen conveying pipeline. The water inlet is connected with a calcium hydroxide solution conveying pipeline.

Preferably, the nozzle is a rotary nozzle. Preferably, the atomization device further comprises an air receiving hose and a water receiving hose. The rotary nozzle is connected with a nitrogen conveying pipeline through a gas receiving hose. The rotary nozzle is connected with a calcium hydroxide solution conveying pipeline through a water receiving hose.

The utility model discloses in, restraining device still includes gas accuse system. According to the trend of gas in the suppression device, the gas control system comprises a first gas stop valve, a gas flowmeter, a gas electromagnetic valve, a gas regulating valve, a gas stop valve and a second gas stop valve which are sequentially arranged on a nitrogen conveying pipeline.

The present invention is directed to a suppression device, which further comprises a water control system. According to the trend of the liquid in the inhibition device, the water control system comprises a first water stop valve, a water flowmeter, a water electromagnetic valve, a water regulating valve, a water stop valve and a second water stop valve which are sequentially arranged on a calcium hydroxide solution conveying pipeline.

The utility model discloses in, the area face distance of the unloading chute bottom of mixing iron ore storehouse to belt conveyor is 130 ~ 200mm, preferably 150 ~ 180mm. The distance between the bottom of the blanking chute of the flux bin and the belt surface of the batching belt conveyor is 160-200 mm, preferably 180-190 mm. The distance between the bottom of the blanking chute of the ore returning bin and the belt surface of the batching belt conveyor is 230-320 mm, and preferably 250-300 mm. The distance between the bottom of the feed chute of the fuel bin and the belt surface of the batching belt conveyor is 180-260 mm, preferably 195-245 mm.

For solving the problem that sintering batching process dust is many and be difficult to restrain among the prior art, the utility model provides a sintering batching in-process dust suppression device. The device comprises a belt conveyor, a guide chute and a material bin, wherein the guide chute is hermetically arranged on the belt conveyor. The material bin is arranged on the guide chute, and a discharge port of the material bin extends into the guide chute. The utility model discloses in, except reserving the feed opening in material storehouse (the hookup location of material storehouse and baffle box promptly) at the baffle box top, other all around are sealed, and the baffle box tail end is sealed, and the baffle box front end (the one end that is close to belt conveyor discharge end promptly) adopts the door curtain formula rubber to seal. When the sintering raw materials fall from the material bin to the belt conveyor and are sintered and proportioned in the conveying process, the guide chute can seal all the falling processes of the materials so as to prevent dust generated in the falling processes of the materials from flying outwards, so that the concentration of post dust in the sintering and proportioning process is reduced, and the problem of poor sintering and proportioning environment in the prior art is solved. Moreover, the arrangement ensures that the discharging and conveying of sintering ingredients are not influenced while the guide chute plays a role in sealing and preventing dust.

Furthermore, the utility model discloses the top of well baffle box can be adjusted according to the actual demand of engineering to the high distance of batching belt conveyor area. For example, the height distance may be selected according to the width of the belt face of the belt conveyor, such as: when the bandwidth is 650mm, the height is 350mm; when the bandwidth is 800mm, the height is 430mm; when the bandwidth is 1000mm, the height is 465mm; when the bandwidth is 1200mm, the height is 547mm; when the bandwidth is 1400mm, the height is 635mm; when the bandwidth is 1600mm, the height is 690mm; the height is 775mm when the bandwidth is 1800 mm.

The utility model discloses still including setting up the suppression device on the baffle box. The suppression device comprises an atomization device, and the atomization device is arranged on a material guide groove at the downstream of the material bin along the material trend. The atomizing device is provided with a nozzle. The nozzle extends into the guide chute and is arranged towards the material direction on the belt conveyor. After the addition of the restraining device, the guide chute is still sealed, and only the installation opening of the restraining device is added on the basis. The utility model discloses in, the material whereabouts in the material storehouse is to belt conveyor on to accomplish the sintering batching in belt conveyor's transportation process. In the burdening process, the suppression device sprays the atomizing agent on the material on the belt conveyor, and the atomized particles efficiently adsorb and suppress dust at a blanking point, particularly efficiently suppress flying dust generated by materials which are very fine in granularity, low in water content and easy to generate flying dust to damage the environment, such as a fusing agent and return ores in a sintering raw material. And after the batching is finished, the sintering batching is sent to a hopper at the tail end of the belt conveyor by the belt conveyor to wait for the next treatment. The utility model discloses a set up suppression device's atomizing and press down the dirt point and replace traditional batching dust pelletizing system, saved batching dust pelletizing system's whole investment on the one hand, on the other hand has increased the moisture content of sintering mixture, plays the effect of prewetting, therefore can reduce the consumption of follow-up mixing water, realizes green water conservation.

Generally speaking, the sintering raw materials mainly include mixing iron ore powder, flux, return fines, fuel etc. therefore the utility model discloses well material storehouse includes mixing iron ore storehouse, flux storehouse, return fines storehouse and bunker. The lower part of each material bin is connected with a discharging chute. Along the material trend, mixing iron ore storehouse, flux storehouse, ore return storehouse, bunker set gradually on belt conveyor, and the unloading chute of each material storehouse below stretches into in the baffle box to ensure that the unloading process of the material in each material storehouse is whole sealed, avoid the dust to raise outward. The utility model discloses in, the quantity in all kinds of material storehouses does not do the injecing, can adjust as required. Generally speaking, a plurality of material bins which need a large amount of material during sintering and batching can be arranged, for example, in fig. 2, 5 blending iron ore bins, 1 flux bin, 2 ore return bins and 2 fuel bins are sequentially arranged along the conveying direction of the material. In addition, the blanking speed of each material bin can be adjusted as required to ensure sintering batching and subsequent mixing granulation effects. According to the material trend, the baffle box tail end in this application is located between first mixing iron ore storehouse and the belt conveyor tail end, and the length of baffle box can adjust as required, for example, the distance of baffle box tail end apart from first mixing iron ore storehouse unloading chute is 1000mm ~ 1500mm, and the baffle box front end sets up 3000mm ~ 3500mm department in last bunker unloading chute low reaches. The utility model discloses to the position settlement in each material storehouse in the sintering batching workshop, not only be favorable to batching and later stage to mix the pelletization, according to the materialization nature of material, can reduce the dust volume moreover. Arranging a blending iron ore bin at a position close to a tail pulley of a belt conveyor, wherein in the material blending process, the blending iron ore firstly falls on the belt surface of the belt conveyor, and an atomizing agent (such as a calcium hydroxide solution) and the surface of the blending iron ore form adhesive particles after being sprayed by a suppression device; along the conveying direction of the batching belt conveyor, the fusing agent also falls onto the uniformly mixed iron ore on the belt surface of the batching belt conveyor, is adhered, is sprayed by the inhibiting device, and is subjected to partial chemical reaction with the fusing agent to generate certain heat, so that the adhesion is further improved; when the return ores fall on the belt surface of the batching belt conveyor and are adhered, the fuel is finally arranged due to a little water content and covers the materials which are arranged in the front, so that the heat is ensured not to be dissipated, and then the atomized agent promotes the fuel to be more tightly combined through the spraying of the inhibiting device.

The utility model discloses in, all be equipped with suppression device in the down reaches position of the unloading chute that baffle box upper and every material storehouse (mixing iron ore storehouse, flux storehouse, ore return storehouse, bunker) are connected promptly. M suppressing devices are provided on the same cross section (i.e., a plane perpendicular to the longitudinal direction of the guide chute) of the guide chute. The number of the inhibiting devices on the same cross section of the guide chute is not limited, and the inhibiting devices can be used for spraying the atomized agent on the material without dead angle coverage. For example, m is 1 to 10, preferably 2 to 8. In the present application, the orientation angle of the nozzle of each of the restraining devices can be changed, and the specific position of each restraining device can be adjusted. As shown in fig. 3, for example, 5 suppression devices are disposed on the same cross section of the material guiding chute, one suppression device is vertically disposed at the center of the material guiding chute, 2 suppression devices are disposed on the left and right sides of the central axis of the material guiding chute in the vertical direction, the left and right suppression devices close to the central axis are disposed at an angle of 35 ° to 45 ° to the horizontal direction, the left and right suppression devices far from the central axis are disposed on the side baffle of the material guiding chute, the angle is also adjustable, the angle to the horizontal direction is 15 ° to 25 °, the nozzles of the suppression devices face the material direction, and the distance between the suppression devices can be adjusted. The m suppression devices arranged on the same cross section form a first suppression device group on the whole. And n first inhibition device groups are sequentially arranged at the downstream of each material bin according to the material trend. The number of the first suppression device groups is not limited, and the first suppression device groups can effectively suppress the raised dust. For example, n is 1 to 6, preferably 2 to 4. The distance between the n first restraining device groups arranged at the downstream positions of the material bins and the corresponding discharging chutes is in cascade arrangement. For example, a group of first restraining devices is arranged at the downstream position of each material bin discharging chute and at the positions a, b and c away from the discharging chute in sequence, wherein a is less than b and less than c. Wherein the values of a, b and c are related to the transport speed and the bandwidth of the belt conveyor, and when the belt speed of the belt conveyor is 1.25m/s and the bandwidth of the belt conveyor is 1800mm, a =800mm, b =1200mm, c =2000mm; when the belt speed of the belt conveyor is 1.25m/s and the belt width of the belt conveyor is 1600mm, a =600mm, b =900mm, c =1500mm; when the belt speed of the belt conveyor is 1.25m/s and the belt width of the belt conveyor is 1400mm, a =500mm, b =750mm, c =1250mm; when the belt speed of the belt conveyor is 1.25m/s and the belt width of the belt conveyor is 1200mm, a =400mm, b =600mm, c =1000mm; when the belt speed of the belt conveyor is 1.25m/s and the belt width of the belt conveyor is 1100mm, a =300mm, b =450mm, c =750mm; when the belt speed of the belt conveyor is 1.25m/s and the belt width of the belt conveyor is 1000mm, a =200mm, b =300mm, c =500mm; when the belt speed of the belt conveyor is 1.25m/s and the belt width of the belt conveyor is 800mm, a =100mm, b =150mm, c =250mm; when the belt speed of the belt conveyor is 1.25m/s and the belt width of the belt conveyor is 650mm, a =50mm, b =75mm, c =125mm. The utility model discloses combine together suppression device and material storehouse, belt conveyor, baffle box and carry out nimble setting, at first lead to long baffle box and can ensure that each material is whole sealed when the whereabouts, has avoided raising of dust outward, can step arrange suppression device on the baffle box in addition, suppression device and baffle box cooperate closely, have effectively solved the problem of raise dust. Simultaneously, this application carries out the systematic arrangement of multi-angle to a plurality of suppression devices in a suppression device group, so not only can deal with various material change condition in a flexible way, and it is fine to press down the dirt effect moreover, has effectively avoided the dust to spread in the batching workshop to reduce post dust concentration, improve the factory environment, be favorable to green and ultralow emission.

As a preferred scheme, the utility model discloses on belt conveyor, be located the low reaches position of baffle box and be provided with suppression device frame. The arrangement positions of the inhibition device frames can be adjusted as required, for example, the inhibition device frames are arranged on the batching belt conveyor in sequence from 1000 mm-1500 mm away from the front end of the guide chute along the conveying direction of the belt conveyor, the distance between every two inhibition device frames is adjustable, if the distance between every two adjacent inhibition device frames is 500mm, the number of the inhibition device frames is one or more, and the inhibition device frames are provided with the inhibition devices. The nozzle of the inhibiting device is arranged towards the material direction on the belt conveyor. Generally speaking, the number of the suppression device frames and the number of the suppression devices on the suppression device frames are not limited, and the high-efficiency suppression effect on the dust of the sintering ingredients discharged from the guide chute can be achieved. For example, j suppression devices are arranged on the suppression device frame. The j restraining devices on the restraining device frame form a second restraining device group as a whole. Wherein j is 1 to 10, preferably 2 to 8. And k restraining device frames are sequentially arranged at the downstream of the guide chute according to the material trend, and each restraining device frame is provided with the second restraining device group. Wherein k is 1 to 12, preferably 2 to 10, the angle of each restraining device can be changed, and the arrangement position of each restraining device can be adjusted. As shown in fig. 4, for example, 5 suppression devices are arranged on one suppression device frame, one suppression device is vertically arranged on a central axis in the vertical direction of the suppression device frame, 2 suppression devices are respectively arranged on the left side and the right side of the central axis of the suppression device frame, the left suppression device and the right suppression device close to the central axis are arranged at an angle of 45-50 degrees with the horizontal direction, the left suppression device and the right suppression device far away from the central axis are arranged at an angle of 25-35 degrees with the horizontal direction, and the nozzles of the suppression devices face the material direction, so that no dead angle coverage of the rotating nozzles to the material is ensured. The utility model discloses with suppression device and suppression device frame, belt conveyor combines and carries out nimble setting, carry out the systematic arrangement of multi-angle to a suppression device who suppresses the group simultaneously, not only can deal with various material change condition in a flexible way like this, it is fine to suppress the dirt effect moreover, absorption and the inhibitory action to the dust have further been improved on the basis of suppression device's the dirt effect on the baffle box promptly, thereby greatly reduced sintering batching in-process post dust concentration, the problem that sintering batching environment is poor among the prior art has been solved.

The utility model discloses in, suppression device includes atomizing device, is provided with air inlet and water inlet on atomizing device's the nozzle. Wherein, the air inlet is connected with a nitrogen gas conveying pipeline, and the water inlet is connected with a calcium hydroxide solution conveying pipeline. Because the nozzle is rotary nozzle, rotary nozzle is connected with nitrogen gas pipeline through connecing the gas hose, and rotary nozzle passes through water hose and calcium hydroxide solution pipeline connection, links to each other through the hose, can promote rotary nozzle's degree of freedom, and then realizes spraying atomizing agent's no dead angle to the material and cover, reduces the raise dust and produces. Spraying calcium hydroxide solution and nitrogen gas to the falling point through the rotary nozzle and carrying out high-efficient suppression and absorption to the dust, calcium hydroxide solution and the surface of mixing iron ore form the adhesion granule, along belt conveyor direction of transportation, the flux also can fall on the mixing iron ore of batching belt conveyor's band face, by the adhesion, then spray through suppression device again, calcium hydroxide solution and flux take place partial chemical reaction, produce certain heat, further promote the adhesion, fall into the adhesion on belt conveyor's band face when the return mine, the fuel is owing to there is some moisture content, so set up at last, cover on the material that has been in the front, the heat has been guaranteed not give off, then spray through suppression device again, calcium hydroxide solution makes the fuel combine inseparabler, just so the raise dust has been reduced. The suppression device also comprises a pneumatic control system and a water control system. According to the trend of gas in the suppression device, the gas control system comprises a first gas stop valve, a gas flowmeter, a gas electromagnetic valve, a gas regulating valve, a gas stop valve and a second gas stop valve which are sequentially arranged on a nitrogen conveying pipeline. According to the trend of the liquid in the inhibition device, the water control system comprises a first water stop valve, a water flowmeter, a water electromagnetic valve, a water regulating valve, a water stop valve and a second water stop valve which are sequentially arranged on a calcium hydroxide solution conveying pipeline. Through stop valve, flowmeter, solenoid valve, governing valve, trip valve can adjust the flow of calcium hydrate solution and nitrogen gas in good time in an appropriate amount, be convenient for to absorption, the suppression of blanking point dust, also can avoid atomizing agent to spray too much and influence subsequent process, reduce the waste of resource simultaneously. Wherein, the technological process of gas accuse system and water accuse system is: the air control system, the water control system and the belt conveyor are controlled in a linkage mode, and the air control system and the water control system are started and stopped along with the starting and stopping of the belt conveyor. The air filtration of the air control system is less than 40 microns, and the pressure is 3-6MPa. The water filtration of the water control system is less than 50 microns, and the pressure is 0.5-2MPa. Compressed nitrogen from a pneumatic control system and a calcium hydroxide solution from a water control system enter an atomizing device together, the calcium hydroxide solution is fully atomized to generate atomized particles through the atomizing device, the atomized particles reach 3-45 micrometers, meanwhile, the atomizing device can adjust the angle in a certain range through a rotating nozzle, the atomized particles flying at high speed adsorb dust, in the batching process, the raised dust generated by a blanking point to the periphery is ensured to fall onto a belt conveyor again after being atomized, and the dust at the blanking point is continuously and efficiently adsorbed and inhibited in a certain spatial range, so that post dust emission is reduced, and the batching workshop environment is improved. Meanwhile, the atomized calcium hydroxide solution generates certain chemical reaction in various materials, so that the materials are promoted to be smoother in subsequent mixing granulation, and the granulation effect is better.

Generally, the amount of dust generated by the falling of material onto the belt face of a belt conveyor is primarily related to the distance between the material and the point of falling. In addition, the amount of dust produced is also related to the particle size of the respective material. Obviously, the sizes of the iron ore powder, the flux, the return fines, the fuel and the like which are mixed in the sintering raw material are different. Consequently, for can reduce the production of dust from the source, the utility model discloses distance to between all kinds of material storehouses and the belt conveyor area has specifically been injectd. The utility model discloses in, the belt face distance of the unloading chute bottom of mixing iron ore storehouse to belt conveyor is 130 ~ 200mm, preferably 150 ~ 180mm. The distance between the bottom of the blanking chute of the flux bin and the belt surface of the batching belt conveyor is 160-200 mm, preferably 180-190 mm. The distance between the bottom of the blanking chute of the ore returning bin and the belt surface of the batching belt conveyor is 230-320 mm, and preferably 250-300 mm. The distance between the bottom of the feed chute of the fuel bunker and the belt surface of the batching belt conveyor is 180-260 mm, preferably 195-245 mm. This application still sets up batching belt conveyor funnel at belt conveyor's discharge end and is used for the uninstallation material, falls belt conveyor area face on and accomplishes the sintering batching at the transportation process through the unloading chute in various materials follow corresponding material storehouse ration, then belt conveyor transports the sintering batching to batching belt conveyor funnel department, unloads the material through batching belt conveyor funnel at last, accomplishes the batching.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses set up on batching belt conveyor and lead to long and sealed baffle box, the baffle box can live the whole sealings of material whereabouts process to prevent that the dust that the material whereabouts in-process produced from raising outward, thereby reduce sintering batching in-process post dust concentration, solved the poor problem of sintering batching environment among the prior art.

2. The utility model discloses all set up suppression device on the baffle box and on the belt conveyor in baffle box low reaches, replaced current batching convulsions dust pelletizing system with suppression device, realized that flux in the sintering raw materials and these granularities of return mine are very thin, the moisture content is low, produce the raise dust produced by the material of raise dust destruction environment easily and carry out high-efficient suppression to the high-efficient absorption of blanking point dust, suppression, especially. The close cooperation of the inhibiting device and the guide chute effectively and completely solves the problem of dust emission in the sintering and proportioning process.

3. The utility model discloses set for the position in each material storehouse and the area face distance of each material storehouse and belt conveyor in the workshop to the sintering batching, not only be favorable to batching and later stage to mix the pelletization, according to the materialization nature of material, can reduce the dust volume moreover.

4. The utility model discloses a calcium hydroxide solution is as atomizing agent, and not only dust collection effect is good, and certain chemical reaction can take place with the material to calcium hydroxide moreover, produces certain heat, can also closely combine each material together, establishes the basis for subsequent mixed pelletization, and then can also assist follow-up sintering, improves the quality of sintering deposit.

5. The utility model discloses a suppression device's atomizing presses down dirt and replaces current batching dust pelletizing system, has saved batching dust pelletizing system's whole investment on the one hand, and on the other hand has increased the mixture moisture content, plays the effect of prewetting, therefore can reduce the consumption of follow-up mixing water, realizes green water conservation.

6. The utility model discloses the small investment, efficient can be used for newly-built sintering batching workshop, also can be used to sintering transformation batching workshop, have certain universality and portability.

Drawings

FIG. 1 is a schematic view of a dust suppression device in the sintering and burdening process of the present invention;

fig. 2 is a schematic structural view of the material bin of the present invention including a blending iron ore bin, a flux bin, a return ore bin and a fuel bin;

FIG. 3 isbase:Sub>A cross-sectional view of section A-A of FIG. 2;

FIG. 4 is a cross-sectional view of section B-B of FIG. 2;

fig. 5 is a schematic structural diagram of the middle suppressing device of the present invention.

Reference numerals:

1: a belt conveyor; 2: a material guide chute; 3: a material bin; 301: uniformly mixing iron ore bins; 302: a flux bin; 303: returning to an ore bin; 304: a fuel bunker; 4: a suppression device; 401: an atomizing device; 40101: a nozzle; 40102: an air-receiving hose; 40103: a water hose is connected; 402: an air control system; 40201: a first pneumatic stop valve; 40202: a gas flow meter; 40203: a gas solenoid valve; 40204: a gas regulating valve; 40205: a gas cut-off valve; 40206: a second gas stop valve; 403: a water control system; 40301: a first water shutoff valve; 40302: a flow meter for water; 40303: a solenoid valve for water; 40304: a regulating valve for water; 40305: a cut-off valve for water; 40306: a second water stop valve; 5: a restraining device frame;

l1: a nitrogen gas delivery pipe; l2: and (3) a calcium hydroxide solution conveying pipeline.

Detailed Description

The technical solution of the present invention is illustrated below, and the claimed invention includes but is not limited to the following embodiments.

A dust suppression device in a sintering and batching process comprises a belt conveyor 1, a material guide chute 2 and a material bin 3. The material guide groove 2 is hermetically arranged on the belt conveyor 1. The material bin 3 is arranged above the belt conveyor 1, and a discharge port of the material bin 3 extends into the material guide groove 1.

In the present invention, the device further comprises a suppression device 4. The inhibition device 4 comprises an atomization device 401, and the atomization device 401 is arranged on the material guide groove 2 and is positioned at the downstream of the material bin 3. The atomizing device 401 is provided with a nozzle 40101. The nozzle 40101 extends into the material guide chute 2 and is arranged towards the material on the belt conveyor 1.

Preferably, the material bin 3 comprises a blending iron ore bin 301, a flux bin 302, a return ore bin 303 and a fuel bin 304. A blanking chute is connected below each material bin 3. According to the material trend, the blending iron ore bin 301, the flux bin 302, the return ore bin 303 and the fuel bin 304 are sequentially arranged on the belt conveyor 1, and a discharging chute below each material bin 3 extends into the guide chute 2.

Preferably, a restraining device 4 is arranged on the material guide chute 2 and at the downstream position of the discharging chute connected with each material bin 3. Preferably, m suppressing devices 4 are provided on the same cross section of the guide chute 2. The m suppression devices 4 form a first suppression device group as a whole. Wherein m is 1 to 10, preferably 2 to 8.

Preferably, n first suppression device groups are sequentially arranged at the downstream of each material bin 3 according to the material trend. Wherein n is 1 to 6, preferably 2 to 4.

Preferably, a suppressing device frame 5 is provided on the belt conveyor 1 at a position downstream of the chute 2. The suppression device frame 5 is provided with a suppression device 4. The nozzles 40101 of the suppression device 4 are arranged toward the material on the belt conveyor 1.

Preferably, j suppression devices 4 are provided on the suppression device frame 5. The j suppression devices 4 on the suppression device frame 5 form a second suppression device group as a whole. Wherein j is 1 to 10, preferably 2 to 8.

Preferably, k pieces of the restraining device frames 5 are sequentially arranged at the downstream of the material guide chute 2 according to the material trend, and each restraining device frame 5 is provided with the second restraining device group. Wherein k is 1 to 12, preferably 2 to 10.

Preferably, the nozzle 40101 of the atomizing device 4 is provided with an air inlet and a water inlet. The gas inlet is connected with a nitrogen gas conveying pipeline L1. The water inlet is connected with a calcium hydroxide solution conveying pipeline L2.

Preferably, the nozzle 40101 is a rotary nozzle. Preferably, the atomizing device 401 further includes an air hose 40102 and a water hose 40103. The rotary nozzle is connected with a nitrogen gas conveying pipeline L1 through a gas receiving hose 40102. The rotary nozzle is connected with a calcium hydroxide solution conveying pipeline L2 through a water receiving hose 40103.

In the present invention, the suppressing device 4 further includes an air control system 402. According to the trend of the gas in the suppression device 4, the pneumatic control system 402 comprises a first gas stop valve 40201, a gas flow meter 40202, a gas electromagnetic valve 40203, a gas regulating valve 40204, a gas stop valve 40205 and a second gas stop valve 40206 which are sequentially arranged on a nitrogen conveying pipeline L1.

In the present invention, the restraining device 4 further includes a water control system 403. The water control system 403 includes a first stop valve 40301 for water, a flow meter 40302 for water, a solenoid valve 40303 for water, a regulating valve 40304 for water, a shut valve 40305 for water, and a second stop valve 40306 for water, which are provided in this order on the calcium hydroxide solution delivery line L2, in accordance with the direction of the liquid in the suppression apparatus 4.

Preferably, the distance from the bottom of the blanking chute of the mixed iron ore bin 301 to the belt surface of the belt conveyor 1 is 130 to 200mm, preferably 150 to 180mm. The distance from the bottom of the blanking chute of the flux bin 302 to the belt surface of the batching belt conveyor 1 is 160-200 mm, preferably 180-190 mm. The distance between the bottom of the blanking chute of the ore returning bin 303 and the belt surface of the batching belt conveyor 1 is 230-320 mm, and preferably 250-300 mm. The distance from the bottom of the blanking chute of the fuel bin 304 to the belt surface of the batching belt conveyor 1 is 180-260 mm, preferably 195-245 mm.

Example 1

As shown in figure 1, the device for suppressing dust in the sintering and proportioning process comprises a belt conveyor 1, a material guide chute 2 and a material bin 3. The material guide groove 2 is hermetically arranged on the belt conveyor 1. The material bin 3 is arranged above the belt conveyor 1, and a discharge port of the material bin 3 extends into the material guide groove 1.

Example 2

Example 1 is repeated except that the apparatus further comprises a suppression means 4. The inhibition device 4 comprises an atomization device 401, and the atomization device 401 is arranged on the material guide groove 2 and is positioned at the downstream of the material bin 3. The atomizing device 401 is provided with a nozzle 40101. The nozzle 40101 extends into the material guide chute 2 and is arranged towards the material on the belt conveyor 1.

Example 3

As shown in fig. 2, the embodiment 2 is repeated, except that the material bin 3 includes a blending iron ore bin 301, a flux bin 302, a return ore bin 303 and a fuel bin 304. A blanking chute is connected below each material bin 3. According to the material trend, the blending iron ore bin 301, the flux bin 302, the return ore bin 303 and the fuel bin 304 are sequentially arranged on the belt conveyor 1, and a discharging chute below each material bin 3 extends into the guide chute 2.

Example 4

The embodiment 3 is repeated, except that the material bin 3 comprises 5 blending iron ore bins 301, 1 flux bin 302, 2 ore returning bins 303 and 2 fuel bins 304 which are sequentially arranged along the material direction.

Example 5

Example 4 is repeated, except that the material guide chute 2 and the downstream position of the discharging chute connected with each material bin 3 are respectively provided with a restraining device 4.

Example 6

As shown in fig. 3, example 5 was repeated except that 5 suppressing devices 4 were provided on the same cross section of the guide chute 2. The 5 suppression devices 4 form a first suppression device group as a whole.

Example 7

Example 5 was repeated except that 7 suppressing devices 4 were provided on the same cross section of the guide chute 2. The 7 suppression devices 4 form a first suppression device group as a whole.

Example 8

Example 6 was repeated except that 3 first inhibiting device groups were provided in sequence downstream of each silo 3 according to the material direction.

Example 9

Example 7 was repeated except that 6 of the first inhibiting device groups were arranged in sequence downstream of each silo 3 according to the material direction.

Example 10

Example 8 was repeated except that the suppressor frame 5 was provided on the belt conveyor 1 at a position downstream of the material chute 2. The suppression device frame 5 is provided with a suppression device 4. The nozzles 40101 of the suppression device 4 are arranged toward the material on the belt conveyor 1.

Example 11

As shown in fig. 4, example 10 is repeated except that 5 suppression devices 4 are provided on the suppression device frame 5. The 5 suppression devices 4 on the suppression device frame 5 form a second suppression device group as a whole.

Example 12

Example 10 was repeated except that 8 suppression devices 4 were provided on the suppression device frame 5. The 8 suppression devices 4 on the suppression device frame 5 form a second suppression device group as a whole.

Example 13

Example 11 is repeated, except that 4 inhibiting device frames 5 are sequentially arranged at the downstream of the material guide chute 2 according to the material trend, and each inhibiting device frame 5 is provided with the second inhibiting device group.

Example 14

Example 12 is repeated, except that 6 inhibiting device frames 5 are sequentially arranged at the downstream of the material guide chute 2 according to the material trend, and each inhibiting device frame 5 is provided with the second inhibiting device group.

Example 15

As shown in fig. 5, example 13 is repeated except that the nozzle 40101 of the atomizing device 4 is provided with an air inlet and a water inlet. The gas inlet is connected with a nitrogen gas conveying pipeline L1. The water inlet is connected with a calcium hydroxide solution conveying pipeline L2.

Example 16

Example 15 was repeated except that the nozzle 40101 was a rotary nozzle. The atomization device 401 further comprises an air receiving hose 40102 and a water receiving hose 40103. The rotary nozzle is connected with a nitrogen gas conveying pipeline L1 through a gas receiving hose 40102. The rotary nozzle is connected with a calcium hydroxide solution conveying pipeline L2 through a water receiving hose 40103.

Example 17

Example 16 is repeated except that the restraining means 4 further comprises an air control system 402. According to the trend of the gas in the suppression device 4, the pneumatic control system 402 comprises a first gas stop valve 40201, a gas flow meter 40202, a gas electromagnetic valve 40203, a gas regulating valve 40204, a gas stop valve 40205 and a second gas stop valve 40206 which are sequentially arranged on a nitrogen conveying pipeline L1.

Example 18

Example 17 is repeated except that the restraining means 4 further comprises a water control system 403. The water control system 403 includes a first stop valve 40301 for water, a flow meter 40302 for water, a solenoid valve 40303 for water, a regulating valve 40304 for water, a shut valve 40305 for water, and a second stop valve 40306 for water, which are provided in this order on the calcium hydroxide solution delivery line L2, in accordance with the direction of the liquid in the suppression apparatus 4.

Example 19

Example 18 was repeated except that the distance from the bottom of the blanking chute of the kneaded iron ore bin 301 to the belt surface of the belt conveyor 1 was 150mm. The distance from the bottom of the blanking chute of the flux bin 302 to the belt surface of the batching belt conveyor 1 is 180mm. The distance from the bottom of the blanking chute of the ore return bin 303 to the belt surface of the batching belt conveyor 1 is 250mm. The distance from the bottom of the feed chute of the fuel bin 304 to the belt surface of the batching belt conveyor 1 is 195mm.

Example 20

Example 18 was repeated except that the distance from the bottom of the blanking chute of the kneaded iron ore bin 301 to the belt surface of the belt conveyor 1 was 180mm. The distance from the bottom of the blanking chute of the flux bin 302 to the belt surface of the batching belt conveyor 1 is 190mm. The distance from the bottom of the blanking chute of the ore returning bin 303 to the belt surface of the batching belt conveyor 1 is 300mm. The distance from the bottom of the feed chute of the bunker 304 to the belt surface of the dosing belt conveyor 1 is 245mm.

Claims (19)

1. The utility model provides a sintering batching in-process dust suppression device which characterized in that: the device comprises a belt conveyor (1), a material guide chute (2) and a material bin (3); the guide chute (2) is hermetically arranged on the belt conveyor (1); the material bin (3) is arranged above the belt conveyor (1), and a discharge hole of the material bin (3) extends into the material guide groove (2);

the device further comprises a suppression device (4); the inhibition device (4) comprises an atomization device (401), and the atomization device (401) is arranged on the material guide groove (2) and is positioned at the downstream of the material bin (3); a nozzle (40101) is arranged on the atomization device (401); the nozzle (40101) extends into the material guide groove (2) and is arranged towards the material direction on the belt conveyor (1).

2. A dust suppression device in the sintering batching process according to claim 1, characterized in that: the material bin (3) comprises a blending iron ore bin (301), a flux bin (302), a return ore bin (303) and a fuel bin (304); a discharging chute is connected below each material bin (3); according to the material trend, the blending iron ore bin (301), the flux bin (302), the return ore bin (303) and the fuel bin (304) are sequentially arranged on the belt conveyor (1), and a discharging chute below each material bin (3) extends into the guide chute (2).

3. A dust suppressing device in a sintering proportioning process according to claim 2, characterized in that: and a restraining device (4) is arranged at the downstream position of the feeding chute connected with each material bin (3) on the guide chute (2).

4. A dust suppression device in the sintering batching process according to claim 3, characterized in that: m restraining devices (4) are arranged on the same cross section of the material guide groove (2); the m suppression devices (4) forming a first suppression device group as a whole; wherein m is 1 to 10.

5. A dust suppression device in the sintering proportioning process according to claim 4, characterized in that: m is 2 to 8.

6. A dust suppression device in the sintering and proportioning process according to claim 4, wherein: according to the material trend, n first inhibition device groups are sequentially arranged at the downstream of each material bin (3); wherein n is 1 to 6.

7. A dust suppression device in the sintering and proportioning process according to claim 6, wherein: n is 2 to 4.

8. A dust suppression device in the course of sintering burden according to any one of claims 1 to 7, characterized in that: a restraining device frame (5) is arranged on the belt conveyor (1) and at the downstream position of the material guide groove (2); and the suppression device frame (5) is provided with a suppression device (4).

9. A dust suppression device in the process of sintering ingredients according to claim 8, characterized in that: j suppression devices (4) are arranged on the suppression device frame (5); the j restraining devices (4) on the restraining device frame (5) form a second restraining device group on the whole; wherein j is 1 to 10.

10. A dust suppression device during sintering and batching process as claimed in claim 9, wherein: j is 2 to 8.

11. A dust suppression device during sintering and batching process as claimed in claim 9, wherein: k restraining device frames (5) are sequentially arranged at the downstream of the guide chute (2) according to the material trend, and each restraining device frame (5) is provided with the second restraining device group; wherein k is 1 to 12.

12. A dust suppression device during sintering and batching process as claimed in claim 11, wherein: k is 2 to 10.

13. A dust suppression device in the process of sintering ingredients according to claim 8, characterized in that: an air inlet and a water inlet are formed in a nozzle (40101) of the atomization device (401); the air inlet is connected with a nitrogen conveying pipeline (L1); the water inlet is connected with a calcium hydroxide solution conveying pipeline (L2).

14. A dust suppressing device during sintering and batching process as claimed in claim 13, characterized in that: the nozzle (40101) is a rotary nozzle.

15. A dust suppression device in the sintering batching process according to claim 14, characterized in that: the atomization device (401) further comprises an air receiving hose (40102) and a water receiving hose (40103); the rotary nozzle is connected with a nitrogen gas conveying pipeline (L1) through a gas receiving hose (40102); the rotary nozzle is connected with a calcium hydroxide solution conveying pipeline (L2) through a water receiving hose (40103).

16. A dust suppression device in the sintering batching process according to claim 15, characterized in that: the suppression device (4) further comprises a pneumatic control system (402); according to the trend of gas in the inhibition device (4), the pneumatic control system (402) comprises a first gas stop valve (40201), a gas flowmeter (40202), a gas solenoid valve (40203), a gas regulating valve (40204), a gas stop valve (40205) and a second gas stop valve (40206) which are arranged on the nitrogen conveying pipeline (L1) in sequence.

17. A dust suppression device during sintering and batching as claimed in claim 16, wherein: the suppression device (4) further comprises a water control system (403); according to the trend of the liquid in the inhibition device (4), the water control system (403) comprises a first stop valve for water (40301), a flow meter for water (40302), a solenoid valve for water (40303), a regulating valve for water (40304), a stop valve for water (40305) and a stop valve for second stop valve for water (40306) which are sequentially arranged on a calcium hydroxide solution conveying pipeline (L2).

18. A dust suppressing device during sintering ingredients of any one of claims 2 to 7, characterized in that: the distance from the bottom of a blanking chute of the blending iron ore bin (301) to the belt surface of the belt conveyor (1) is 130-200 mm; the distance from the bottom of a blanking chute of the flux bin (302) to the belt surface of the batching belt conveyor (1) is 160-200 mm; the distance from the bottom of the blanking chute of the ore returning bin (303) to the belt surface of the batching belt conveyor (1) is 230-320 mm; the distance from the bottom of the blanking chute of the fuel bin (304) to the belt surface of the batching belt conveyor (1) is 180-260 mm.

19. A dust suppression device during sintering and batching as claimed in claim 18, wherein: the distance from the bottom of a blanking chute of the blending iron ore bin (301) to the belt surface of the belt conveyor (1) is 150-180 mm; the distance from the bottom of a blanking chute of the flux bin (302) to the belt surface of the batching belt conveyor (1) is 180-190 mm; the distance from the bottom of the blanking chute of the ore returning bin (303) to the belt surface of the batching belt conveyor (1) is 250-300 mm; the distance from the bottom of the blanking chute of the fuel bin (304) to the belt surface of the proportioning belt conveyor (1) is 195-245 mm.

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