Sintering fuel separating and segregation distributing device and control method

Abstract

The invention discloses a sintering fuel separating, segregating and distributing device and a control method, the sintering fuel separating, segregating and distributing device comprises a sintering trolley, a blanking device, a feeding device and a charge level mixing device, the blanking device conveys a lower-layer mixture to the sintering trolley, and the feeding device conveys a lower-layer mixture to the sintering trolley; the feeding device comprises a fuel conveying mechanism and a material distributing mechanism connected with the fuel conveying mechanism, the upper-layer fuel enters the material distributing mechanism and then is discharged onto the lower-layer mixture in a round roller rotating mode, and the material surface uniform stirring device extends into the surface layers of the upper-layer fuel and the lower-layer mixture to stir and uniformly mix the upper-layer fuel and the lower-layer mixture. According to the sintering fuel separating and segregation distributing device and the control method, upper-layer fuel can be quantitatively conveyed to the sintering trolley at a constant speed in a conveying mode of rotation of the round rollers, a sintering material layer with the material face rich in fuel is formed, heat distribution of the sintering material layer is optimized, the quality of surface layer sintering ore is improved, and energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smelting, and particularly relates to a sintering fuel separate addition and segregation distribution device and a control method. BACKGROUND

[0002] In the sintering production process, the segregation distribution device is used to distribute the mixed material with low fuel content in the lower part of the pallet car and the mixed material with high fuel content in the upper part of the pallet car, so as to reduce fuel consumption and improve the quality of the sintered ore by using the heat storage effect of the sintering material layer.

[0003] In the related art, the segregation distribution device includes a roller distributor and an airflow segregation distribution device, and the roller distributor and the airflow segregation distribution device are used to segregate the particle size, that is, the large particle size is in the bottom layer and the small particle size is in the upper layer. Since the raw material after mixing and granulation is relatively uniform, the actual segregation effect is limited, the fuel deviation between the upper part and the lower part of the pallet car is not large, and the ideal fuel distribution cannot be achieved. As a result, the heat of the cross section of the pallet car is not uniform in the sintering process from the bottom to the top, and the fuel consumption of the sintering process is greatly increased.

[0004] Therefore, it is necessary to provide a sintering fuel separate addition and segregation distribution device and a control method to solve the above problems. SUMMARY

[0005] The main purpose of the present application is to provide a sintering fuel separate addition and segregation distribution device and a control method, which aims to solve the problem that the ideal fuel distribution structure cannot be achieved due to the relatively uniform raw material after mixing and granulation, the fuel deviation between the upper part and the lower part of the pallet car is not large, and the heat of the cross section of the pallet car is not uniform, thereby causing the problem of large fuel consumption.

[0006] To achieve the above purpose, the present application provides a sintering fuel separate addition and segregation distribution device, which comprises a sintering pallet car, a discharging device, a feeding device and a material surface mixing device arranged above the sintering pallet car and along the running direction of the sintering pallet car, the discharging device is used to convey the lower mixed material to the sintering pallet car, the feeding device comprises a fuel conveying mechanism and a distribution mechanism connected with the fuel conveying mechanism, the fuel conveying mechanism is filled with upper fuel, the upper fuel is discharged onto the lower mixed material by the rotating mode of the circular roller after entering the distribution mechanism, the material surface mixing device rotates above the sintering pallet car, the rotating direction of the material surface mixing device is opposite to the material conveying direction of the sintering pallet car, and the material surface mixing device mixes the upper fuel and the lower mixed material in the surface layer.

[0007] Preferably, the cloth mechanism comprises a cylinder, a spiral shaft, spiral blades, and a spiral driver connected with the spiral shaft for driving the spiral shaft to rotate, the cylinder is provided with a feeding port and a discharging port, fuel of the fuel conveying mechanism enters the cylinder from the feeding port, the spiral shaft is installed in the cylinder, and the spiral blades are arranged around the spiral shaft, and fuel is pushed to the discharging port under the rotation of the spiral blades.

[0008] Preferably, the spiral blades comprise an inner positive spiral, an inner reverse spiral, and an outer positive spiral arranged around the outer ring of the inner positive spiral and the inner reverse spiral, the inner positive spiral and the inner reverse spiral are reversely and oppositely arranged around the two ends of the spiral shaft, the discharging port is arranged below the inner reverse spiral, and the spiral direction of the outer positive spiral is the same as that of the inner positive spiral.

[0009] Preferably, the discharging port of the cylinder is connected with a buffer transition bin, the buffer transition bin is provided with a discharging port below, the discharging port comprises a lower outlet and a side outlet, the lower outlet is provided with a lower discharging roller below, and the side outlet is installed with a rotatable auxiliary door, the auxiliary door is located at the side outlet for controlling the opening degree of the side outlet, and upper layer materials discharged from the buffer transition bin are discharged to the sintering pallet through the lower discharging roller.

[0010] The auxiliary door is composed of a plurality of auxiliary door units, and the opening degree of each auxiliary door unit is adjustable.

[0011] Preferably, the buffer transition bin is located above the sintering pallet and has the same width as the sintering pallet.

[0012] Preferably, the material surface uniform mixing device comprises a supporting base hung above the sintering pallet, a stirring driver installed on the supporting base, double stirring shafts connected with the stirring driver, and stirring paddles installed on the stirring shafts, the stirring paddles on different stirring shafts are staggered, and the stirring paddles are at least partially inserted into the lower layer of mixed materials.

[0013] Preferably, the stirring paddles on the same stirring shaft are a plurality of stirring paddles, and adjacent two stirring paddles in the plurality of stirring paddles are arranged in a staggered manner along the stirring shaft.

[0014] Each stirring paddle is arranged at an angle with the running direction of the sintering pallet.

[0015] Preferably, the sintering device further comprises a tail section identification system installed at the discharging end of the sintering pallet for detecting the sintering quality on the cross section of the pallet.

[0016] The application further provides a sintering fuel distribution control method, comprising the following steps:

[0017] Step S1, initializing the fuel proportion in the upper layer fuel and the lower layer mixed material according to the homogeneous sintering requirement, and adjusting the depth of the material surface mixing device into the upper layer material surface;

[0018] Step S2, obtaining the image distribution of the sintering bed cross section sinter from the sintering trolley cross section identification system, and dividing the image distribution into multiple micro regions along the sintering trolley width direction, and dividing the image distribution into upper and lower two parts at the material layer depth;

[0019] Step S3, comparing the image distribution of the upper and lower two parts of the sinter, obtaining the quality difference of the upper and lower two parts of the sinter, and adjusting the fuel proportion in the upper layer fuel and the lower layer mixed material according to the difference;

[0020] Step S4, comparing the image distribution of each micro region in the sintering trolley width direction, obtaining the average temperature Ti of each region, assuming that the ideal temperature fluctuation temperature value of each micro region in the sintering trolley width direction is TA, and the ideal standard deviation is σ' T , and calculating the average value and the standard deviation σ T :

[0021]

[0022]

[0023] If σ T ≤ σ' T , the sintering system is in normal operation;

[0024] If σ T > σ' T , and , the opening of the auxiliary gate unit corresponding to the i region is reduced;

[0025] If σ T > σ' T , and , the opening of the auxiliary gate unit corresponding to the i region is increased.

[0026] Preferably, the step S3 comprises the following steps:

[0027] Step S31, if the upper layer sintered ore is overburned and the lower layer is underburned, the proportion of fuel in the upper layer and the lower layer mixture is reduced, that is, the amount of fuel in the upper layer is reduced, the amount of fuel in the lower layer mixture is increased, and the depth of the material surface mixing device into the material surface is increased; if the upper layer sintered ore is overburned and the lower layer is normally sintered, the amount of fuel added in the lower layer mixture is maintained, but the amount of fuel added in the upper layer is reduced; if the upper layer and the lower layer sintered ore are both overburned, the proportion of fuel added in the upper layer and the lower layer mixture is maintained, but the total amount of fuel added is reduced.

[0028] Step S32, if the upper layer sintered ore is normally sintered and the lower layer is underburned, the amount of fuel added in the upper layer mixture is maintained, and the amount of fuel added in the lower layer mixture is increased;

[0029] If the upper layer and the lower layer sintered ore are normally sintered, the original parameters are maintained for production;

[0030] If the upper layer sintered ore is normally sintered and the lower layer is overburned, the amount of fuel added in the upper layer is maintained, and the amount of fuel added in the lower layer mixture is reduced;

[0031] Step S33, if the upper layer sintered ore is underburned and the lower layer is underburned, the proportion of fuel added in the upper layer and the lower layer mixture is maintained, and the total amount of fuel added is increased;

[0032] If the upper layer sintered ore is underburned and the lower layer is normally sintered, the amount of fuel added in the lower layer mixture is maintained, and the amount of fuel added in the upper layer is increased;

[0033] If the upper layer sintered ore is underburned and the lower layer is overburned, the amount of fuel added in the upper layer is increased, the amount of fuel added in the lower layer mixture is reduced, and the depth of the material surface mixing device into the material surface is reduced.

[0034] Compared with the prior art, the sintering fuel separate addition and segregation distribution device and the control method provided by the application have the following beneficial effects:

[0035] The sintering fuel separate adding and segregating distributing device and the control method have the following advantages: the lower mixed material is delivered to the sintering trolley through the discharging device, then the upper fuel is delivered to the lower mixed material through the feeding device, the upper fuel and the lower mixed material are delivered separately, the lower material is mixed and granulated in a certain proportion in advance, the upper fuel does not participate in the mixing and granulation, but is distributed on the surface of the sintering mixed and granulated material layer (the lower mixed material) according to the requirement through the independent feeding device, then the lower mixed material and the upper fuel of a certain thickness are quickly stirred and mixed evenly through the material surface mixing device, and finally the sintering material layer with fuel-rich surface is formed, so that the heat distribution of the sintering material layer is optimized, the surface layer sintering ore quality is improved, and the energy consumption is reduced. The inner ring forward screw belt, the inner ring reverse screw belt and the outer ring forward screw belt are arranged, so that the upper fuel can be delivered to the sintering trolley at a uniform speed and a certain quantity. Due to the forward delivery and reverse pushing actions in the operation process of the three, the continuity of material delivery is ensured, and the problems of material extrusion and overflow do not occur in the delivery process, so that the supply of the upper fuel is more stable and reliable, and the sintering quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without any creative labor for those skilled in the art.

[0037] Figure 1 A front view of the sintering fuel separate adding and segregating distributing device provided by the present application is shown in the figure.

[0038] Figure 2 A side view of one part of the sintering fuel separate adding and segregating distributing device shown in the figure. Figure 1

[0039] Figure 3 A structure schematic view of another part of the sintering fuel separate adding and segregating distributing device shown in the figure. Figure 1

[0040] Figure 4 A structure schematic view of the distributing mechanism shown in the figure. Figure 1

[0041] Figure 5 A sectional view of the distributing mechanism shown in the figure. Figure 4

[0042] Figure 6 A structure schematic view of the spiral blade shown in the figure. Figure 5

[0043] Figure 7 ​​​​​As Figure 1 Fig. 1 is a structural schematic view of a material surface mixing device according to an embodiment of the present application;

[0044] Figure 8 As Figure 7 Fig. 2 is a perspective view of a partial structure of the material surface mixing device according to an embodiment of the present application.

[0045] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0046] It should be understood that the specific embodiments described herein merely set forth preferred combinations of components and / or other features, and that the scope of the application is not limited to these embodiments. Numerous variations and modifications from the descriptions and illustrations herein will be readily apparent to those of ordinary skill in the art.

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0048] It should be noted that all directional indications, such as upper, lower, left, right, front, back, etc., are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0049] In addition, the description of "first", "second", etc. in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those of ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0050] Please refer to the accompanying drawings Figures 1 to 3The application provides a sintering fuel separate adding and segregating distributing device. The sintering fuel separate adding and segregating distributing device comprises a sintering trolley 1, a discharging device 3, a feeding device 5 and a material surface mixing device 7 which are arranged above the sintering trolley 1 and along the running direction of the sintering trolley 1, the discharging device 3 is used for conveying lower mixed material 20 to the sintering trolley 1, and the feeding device 5 is used for laying upper fuel 30 on the lower mixed material 20. The discharging device 3 comprises a material storage bin 31 and a discharging roller 33 which is arranged below the material storage bin 31, the lower mixed material 20 is placed in the material storage bin 31, a discharging gap is formed between the roller cylinders of the discharging roller 33, the material storage bin 31 is arranged above the discharging roller 33, and the lower mixed material 20 is discharged from the discharging gap to the sintering trolley 1. The material surface mixing device 7 is hoisted above the sintering trolley 1 and rotates continuously, and is used for mixing and uniformizing the upper material on the sintering trolley 1. It is to be explained that the lower mixed material 20 is the sintering raw material which is mixed and granulated with low fuel content. The upper fuel 30 is the material which is rich in fuel. After the discharging device 3 conveys the lower mixed material 20 to the sintering trolley 1, the feeding device 5 is used for conveying the upper fuel 30 to the lower mixed material 20, the upper fuel 30 and the lower mixed material 20 are conveyed separately, the lower material is mixed and granulated in advance according to a certain proportion, the upper fuel 30 does not participate in the mixing and granulation, but is distributed on the surface of the sintering mixed and granulated material layer (the lower mixed material 20) according to the need through the independent feeding device 5, and then the material surface mixing device 7 is used for rapidly mixing and uniformizing the lower mixed material 20 and the upper fuel 30 with a certain thickness, so as to finally form the sintering material layer which is rich in fuel on the surface, thereby optimizing the heat distribution of the sintering material layer, improving the surface sintering ore quality, and reducing the energy consumption. In the prior art, the sintering method is to mix the fuel and the sintering raw material together, granulate, and then place on the sintering trolley 1 for sintering. In the process of transferring the sintering heat from the upper layer to the lower layer, due to the fact that the fuel in the surface layer is less and the fuel in the lower layer is more, the heat distribution of the trolley cross section is uneven, the heat of the upper material is insufficient, the heat of the lower material is excessive, and it is necessary to increase the proportion of the fuel in the mixed material, so as to increase the fuel loss. The method of the application can increase the fuel amount of the upper material by laying the upper fuel 30 which is rich in fuel on the lower mixed material 20, so as to make the heat of the upper and lower mixed material 20 uniform, reduce the fuel consumption, and improve the sintering quality.

[0051] Please refer to Figure 2 , Figure 4 and Figure 5Specifically, in the embodiment, the feeding device 5 comprises a fuel conveying mechanism 51 and a distributing mechanism 53 connected with the fuel conveying mechanism 51, the fuel conveying mechanism 51 is filled with the upper layer fuel 30, and the upper layer fuel 30 is discharged onto the lower layer mixture 20 by the material conveying mode of the rotation of the round roller after entering the distributing mechanism 53. The rotation of the round roller uniformly spreads the upper layer fuel 30 on the lower layer mixture 20, thereby improving the fuel content in the upper layer mixture.

[0052] The fuel conveying mechanism 51 comprises a fuel bin 511 and a belt scale 513 connected below the fuel bin. Specifically, the distributing mechanism 53 comprises a cylinder body 531, a spiral shaft 533, spiral blades 535, and a spiral driver 537 connected with the spiral shaft 533 for driving the rotation of the spiral shaft 533, the cylinder body 531 is provided with an inlet 5311 and an outlet 5313, the fuel of the fuel conveying mechanism 51 enters the cylinder body 531 from the inlet 5311, the spiral shaft 533 is installed in the cylinder body 531, the spiral blades 535 are arranged around the spiral shaft 533, and the fuel is pushed to the outlet 5313 under the rotation of the spiral blades 535. In the process of the rotation of the spiral shaft 533, the spiral blades 535 push the upper layer fuel 30 to the outlet 5313, and the upper layer fuel 30 uniformly falls onto the sintering pallet car 1 under the control of the spiral blades 535. Specifically, the spiral driver 537 is an electric motor.

[0053] As Figure 4 and Figure 6As shown, further, the spiral blade 535 comprises an inner ring forward screw belt 5351, an inner ring reverse screw belt 5353, and an outer ring forward screw belt 5355 arranged outside the inner ring forward screw belt 5351 and the inner ring reverse screw belt 5353, the inner ring forward screw belt 5351 and the inner ring reverse screw belt 5353 being oppositely arranged in axial direction at two ends of the spiral shaft 533, the discharge port 5313 being arranged below the inner ring reverse screw belt 5353, and the spiral direction of the outer ring forward screw belt 5355 being the same as that of the inner ring forward screw belt 5351. The inner ring forward screw belt 5351 is arranged at the feeding port 5311 and cooperates with the outer ring forward screw belt 5355 to push the material forward, and the inner ring reverse screw belt 5353 pushes the material at the other end to the inner ring forward screw belt 5351 to prevent the end material from being squeezed and overflowing when the end material is higher than the material level of the inner ring reverse screw belt 5353, and the inner ring reverse screw belt 5353 pushes the material to the middle, thereby ensuring that the material conveying process is not squeezed and overflowed. Therefore, by arranging the inner ring forward screw belt 5351, the inner ring reverse screw belt 5353, and the outer ring forward screw belt 5355, the upper layer fuel 30 can be uniformly and quantitatively conveyed to the sintering pallet car 1, and due to the forward conveying and reverse pushing actions in the operation process of the three, the continuity of the material conveying is ensured, and the problems of squeezing and overflowing in the conveying process are avoided, thereby making the supply of the upper layer fuel 30 more stable and reliable, and further improving the sintering quality.

[0054] In detail, as shown in Figure 4 and Figure 6 the outer ring forward screw belt 5355 and the inner ring forward screw belt 5351 rotate to move the material to the left, and the inner ring reverse screw belt 5353 reversely rotates to move the material to the right, and the materials pushed by the two are pushed to the discharge port 5313.

[0055] As shown in Figure 5As shown, the discharge port 5313 of the barrel 531 is connected with a buffer transition bin 9, in order to prevent emptying, the feeding mechanism 53 needs to ensure a certain filling rate, so that the buffer transition bin 9 is full of fuel. A discharge port 91 is formed below the buffer transition bin 9, the discharge port 91 includes a lower outlet 911 and a side outlet 913, the lower outlet 911 is provided below with a discharging roller 10, and the side outlet 913 is installed with a rotatable auxiliary door 11, the auxiliary door 11 is located at the side outlet 913 for controlling the opening degree of the side outlet 913, and the upper layer of material discharged from the buffer transition bin 9 is discharged to the sintering trolley 1 through the discharging roller 10. Specifically, it is worth noting that the discharge port 5313 of the barrel 531 is arranged directly above the discharging roller 10, so that the material output in a spiral manner is evenly dropped onto the discharging roller 10 after being discharged from the discharge port 5313, and the length of the discharge port 5313 is the same as the length of the auxiliary door 11.

[0056] In detail, the auxiliary door 11 is composed of a plurality of auxiliary door units 13, the opening degree of each auxiliary door unit 13 is adjustable, the more the number of auxiliary door units 13, the more precise the fuel supply in the width direction of the sintering trolley 1, and the more homogeneous the sintering process. The auxiliary door unit 13 is an arc-shaped plate rotatably connected to one side of the discharging roller 10, and the rotation angle of each auxiliary door unit 13 can control the material dropping amount of the discharging roller 10.

[0057] Further, the buffer transition bin 9 is located above the sintering trolley 1, in order to uniformly discharge the material in the buffer transition bin 9 to the sintering trolley 1, the buffer transition bin 9 is arranged to be the same width as the sintering trolley 1.

[0058] Please refer to Figure 3 and Figure 7Specifically, the material surface mixing device 7 is hung above the sintering pallet 1 and rotates on the material surface of the sintering pallet 1, the rotating direction of the material surface mixing device 7 is opposite to the conveying direction of the sintering pallet 1, the material surface mixing device 7 extends into the upper layer of fuel 30 to the surface layer of the lower layer of mixed material 20 to mix the upper layer of fuel 30 and the surface layer of the lower layer of mixed material 20. Specifically, the material surface mixing device 7 comprises a supporting base 71 hung above the sintering pallet, a stirring driver 73 installed on the supporting base 71, at least two stirring shafts 75 connected with the stirring driver 73, and stirring paddles 77 installed on each stirring shaft 75, the stirring paddles 77 on adjacent two stirring shafts 75 are arranged in a staggered manner, the stirring paddles extend into the upper layer of fuel 30 to the surface layer of the lower layer of mixed material 20 to mix the upper layer of fuel 30 and the surface layer of the lower layer of mixed material 20, which improves the heat distribution of the upper and lower layers of mixed material 20, makes the sintering process of the whole mixed material more sufficient, and reduces fuel consumption.

[0059] In detail, the stirring driver 73 is an electric motor, the stirring shafts 75 are two, each stirring shaft 75 is driven by an electric motor, each stirring shaft 75 is welded with stirring paddles 77, the stirring paddles 77 on the same stirring shaft 75 are multiple, the multiple stirring paddles 77 are distributed along the axis of the stirring shaft 75, the stirring paddles 77 are uniformly arranged on the outer periphery of the stirring shaft 75, and the projections of the adjacent two stirring paddles 77 on the same stirring shaft 75 on the same plane are arranged in a staggered manner. It can be understood that the rotating directions of the two stirring shafts 75 are opposite, one stirring shaft 75 pushes the material to the left, and the other stirring shaft 75 pushes the material to the right, the staggered stirring paddles 77 quickly turn over the surface layer of the upper layer of fuel 30 and the lower layer of mixed material 20 in the rotating process to mix them. It should be noted that the depth of the stirring paddles 77 into the material layer can be adjusted by the supporting base 71.

[0060] Among them, each of the stirring paddles 77 is arranged at an angle with the running direction of the sintering pallet 1, the angle is a right angle, or it can be an obtuse angle, when it is an obtuse angle, that is, the stirring paddles 77 are arranged in an inclined state, so that they are more easily scooped into the material to improve efficiency.

[0061] As shown in Figure 8 The cutting part 771 is formed on the stirring paddle 77, and the thickness of the cutting part 771 gradually narrows towards the cutting surface. The cutting surface is the working surface of the stirring paddle 77 that first scoops into the material, and the stirring paddle quickly scoops into the material in the rotating process through the cutting part 771 to improve the mixing speed and reduce the driving motor resistance.

[0062] As shown in Figure 1As shown, the sintering fuel partial segregation distributing device further comprises a material surface flattening mechanism 14 and a machine tail cross section identification system 15 suspended above the sintering trolley, the material surface flattening mechanism 14 flattens and compacts the material to reduce the gap between the materials and improve the flatness. The machine tail cross section identification system 15 is installed at the discharging end of the sintering trolley 1 to detect the sintering quality on the cross section of the trolley. Specifically, the fuel entering the sintering is configured in two parts in a certain proportion, one part of the fuel is arranged on the sintering trolley by the traditional mixing and granulating and discharging device, and the other part of the separately added upper fuel is transported to the trolley by the material conveying device and distributed on the surface of the material layer as needed, and the raw materials are stirred and mixed by the material surface stirring device, and then the material surface is flattened by the material surface flattening mechanism 14, and then the ignition device 16 is used until the whole sintering process is completed, and finally the machine tail cross section identification system 15 is arranged at the sintering discharging end to detect the sintering quality on the cross section of the sintering trolley. The control system adjusts the feeding amount of the distributing system 2 according to the sintering quality detection result, so as to ensure the product quality and reduce the energy consumption.

[0063] The application also provides a sintering fuel partial segregation distributing control method, comprising the following steps:

[0064] Step S1, according to the homogeneous sintering requirement, initializing the fuel proportion k in the upper fuel 30 and the lower mixed material 20, and adjusting the depth h of the material surface stirring device 7 into the upper material surface.

[0065] Step S2, obtaining the image distribution of the sintering trolley 1 cross section sintering ore by the machine tail cross section identification system 15, and dividing the image distribution into multiple micro regions along the width direction of the sintering trolley 1, and dividing the image distribution into upper and lower two parts at the material layer depth h to judge the sintering condition of the upper and lower two parts of the material layer.

[0066] Step S3, comparing the image distribution of the upper and lower two parts of the sintering ore, obtaining the quality difference of the upper and lower two parts of the sintering ore, and adjusting the feeding proportion k of the fuel in the upper fuel 30 and the lower mixed material 20 according to the difference.

[0067] Specifically, the operation of controlling the feeding proportion according to the sintering condition is as follows:

[0068] Step S31, if the upper layer sinter is over-fired and the lower layer is under-fired, the proportion of fuel in the upper layer fuel 30 and the lower layer mixture 20 is reduced, i.e. the amount of the upper layer fuel 30 is reduced and the amount of fuel in the lower layer mixture 20 is increased, and the depth h of the material surface mixing device 7 into the material surface is increased; if the upper layer sinter is over-fired and the lower layer is normally sintered, the amount of fuel added in the lower layer mixture 20 is maintained, but the amount of the upper layer fuel 30 is reduced; if the upper layer and the lower layer sinter are both over-fired, the proportion k of fuel added in the upper layer fuel 30 and the lower layer mixture 20 is maintained, but the total amount of fuel added is reduced.

[0069] Step S32, if the upper layer sinter is normally sintered and the lower layer is under-fired, the amount of the upper layer fuel 30 is maintained and the amount of fuel added in the lower layer mixture 20 is increased; if the upper layer and the lower layer sinter are normally sintered, the original parameters are maintained; if the upper layer sinter is normally sintered and the lower layer is over-fired, the amount of the upper layer fuel 30 is maintained and the amount of fuel added in the lower layer mixture 20 is reduced.

[0070] Step S33, if the upper layer sinter is under-fired and the lower layer is under-fired, the proportion k of fuel added in the upper layer fuel 30 and the lower layer mixture 20 is maintained and the total amount of fuel added is increased; if the upper layer sinter is under-fired and the lower layer is normally sintered, the amount of fuel added in the lower layer mixture 20 is maintained and the amount of the upper layer fuel is increased; if the upper layer sinter is under-fired and the lower layer is over-fired, the amount of the upper layer fuel 30 is increased, the amount of fuel added in the lower layer mixture 20 is reduced, and the depth of the material surface mixing device 7 into the material surface is reduced. Therefore, by analyzing the upper and lower parts of the sintered material, the amount of fuel added in the upper layer fuel 30 and the lower layer mixture 20 is adjusted in real time, so as to realize accurate control and improve the quality of the sinter.

[0071] Step S4, the average temperature Ti of each region is obtained by comparing the image distribution of each micro region in the width direction of the sintering trolley 1, and the ideal temperature fluctuation value TA and the ideal standard deviation σ' of each micro region in the width direction of the sintering trolley 1 are assumed T , and the average value and the standard deviation σ T are calculated:

[0072]

[0073]

[0074] (1) If σ T ≤ σ' T , the sintering system is normally operated;

[0075] (2) If σ T > σ' T , and , the opening degree of the auxiliary gate unit 13 corresponding to the i region is reduced.

[0076] The specific adjustment scheme of the opening degree Hi of the corresponding auxiliary door unit is as shown in the table:

[0077]

[0078] Wherein: is the average value of the opening degree of each auxiliary door unit.

[0079] (3) If σ T > σ' T , and , the opening degree Hi of the corresponding auxiliary door unit in the i area is increased, and the specific adjustment scheme is as shown in the table:

[0080]

[0081] It can be understood that, after obtaining the sintering temperature of each area in the width direction of the sintering trolley 1, the opening degree of the auxiliary door unit 13 is controlled, which can reduce energy consumption and further ensure the quality of the sinter.

[0082] Therefore, the sintering fuel separate addition and segregation distribution control method realizes accurate control and improves the quality of sinter by analyzing the sintering conditions of the upper and lower parts of the sinter and then controlling the addition amount of fuel and the sintering temperature in the upper fuel 30 and the lower mixture 20 to adjust in real time.

[0083] The sintering fuel separate addition and segregation distribution device and control method provided by the application transport the lower mixture 20 to the sintering trolley 1 through the discharging device 3, then transport the upper fuel 30 to the lower mixture 20 through the feeding device 5, the upper fuel 30 and the lower mixture 20 are transported separately, the lower mixture is pre-mixed and granulated according to a certain proportion, the upper fuel 30 does not participate in the mixing and granulation, but is distributed on the surface of the sintering mixed and granulated material layer (lower mixture 20) according to the need through the independent feeding device 5, then the lower mixture 20 and the upper fuel 30 of a certain thickness are quickly stirred and mixed evenly through the material surface mixing device 7, and finally a sintering material layer with fuel-rich surface is formed, so that the heat distribution of the sintering material layer is optimized, the surface layer sinter quality is improved, and the energy consumption is reduced. The inner ring forward screw belt, the inner ring reverse screw belt and the outer ring forward screw belt can uniformly and quantitatively transport the upper fuel to the sintering trolley, and due to the forward transportation and reverse pushing actions in the running process of the three, the continuity of material transportation is ensured, and there is no problem of material extrusion and overflow in the transportation process, so that the supply of the upper fuel is more stable and reliable, and the sintering quality is improved.

[0084] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A sintering fuel partial segregation distributing device characterized by, The sintering trolley, and the blanking device, the feeding device and the material surface mixing device arranged above the sintering trolley and along the running direction of the sintering trolley, the blanking device conveying the lower mixed material to the sintering trolley, the feeding device comprising a fuel conveying mechanism and a distributing mechanism connected with the fuel conveying mechanism, the fuel conveying mechanism being filled with the upper fuel, the upper fuel being discharged onto the lower mixed material by the rotation of the circular roller after entering the distributing mechanism, and the material surface mixing device rotating above the sintering trolley, the rotating direction being opposite to the material conveying direction of the sintering trolley, the material surface mixing device mixing the upper fuel and the lower mixed material by extending into the surface layer of the upper fuel and the lower mixed material.

2. The sinter fuel portioning and segregating distribution device according to claim 1, characterized by, The distributing mechanism comprises a cylinder, a spiral shaft, spiral blades and a spiral driver connected with the spiral shaft for driving the spiral shaft to rotate, the cylinder being provided with an inlet and an outlet, the fuel of the fuel conveying mechanism entering the cylinder through the inlet, the spiral shaft being installed in the cylinder, and the spiral blades being arranged around the spiral shaft, the fuel being pushed to the outlet under the rotation of the spiral blades.

3. The sinter fuel portioning and segregating distribution device according to claim 2, characterized in that, The spiral blades comprise an inner positive spiral, an inner reverse spiral and an outer positive spiral arranged around the inner positive spiral and the inner reverse spiral, the inner positive spiral and the inner reverse spiral being oppositely arranged around the two ends of the spiral shaft, the outlet being arranged below the inner reverse spiral, and the spiral direction of the outer positive spiral being the same as that of the inner positive spiral.

4. The apparatus according to claim 2, wherein The outlet of the cylinder is connected with a buffer transition bin, the buffer transition bin being provided with a discharge opening below, the discharge opening comprising a lower outlet and a side outlet, the lower outlet being provided with a lower discharge circular roller, and the side outlet being provided with a rotatable auxiliary door, the auxiliary door being arranged at the side outlet for controlling the opening degree of the side outlet, the upper material discharged from the buffer transition bin being discharged onto the sintering trolley through the lower discharge circular roller. The auxiliary door is composed of a plurality of auxiliary door units, and the opening degree of each auxiliary door unit is adjustable.

5. The apparatus according to claim 4, wherein The buffer transition bin is arranged above the sintering trolley and has the same width as the sintering trolley.

6. The apparatus according to claim 1, wherein The material surface mixing device comprises a supporting base hung above the sintering trolley, a stirring driver installed on the supporting base, double stirring shafts connected with the stirring driver and stirring paddles installed on the stirring shafts, the stirring paddles on different stirring shafts being staggered, and the stirring paddles being at least partially inserted into the material layer of the lower mixed material.

7. The apparatus according to claim 6, wherein The stirring paddles on the same stirring shaft are a plurality of stirring paddles, and adjacent two stirring paddles among the plurality of stirring paddles are arranged in a staggered manner along the stirring shaft. Each stirring paddle is arranged at an angle with the running direction of the sintering trolley.

8. The apparatus according to any one of claims 1 to 7, wherein A tail section identification system is further arranged at the discharge end of the sintering trolley for detecting the sintering quality on the cross section of the trolley.

9. A method of sinter fuel partial addition and segregation distribution control, using the sinter fuel partial addition and segregation distribution device according to any one of claims 1 to 8, characterized by, The method comprises the following steps: Step S1, according to the homogeneous sintering requirement, initializing the proportion of fuel in the upper layer and the lower layer mixture, and adjusting the depth of the material surface mixing device into the upper layer material surface; Step S2, obtaining the image distribution of the sintering pallet cross section sinter from the tail section identification system, and dividing the image distribution into multiple micro regions along the width direction of the sintering pallet, and dividing the image distribution into upper and lower two parts at the material layer depth; Step S3, comparing the image distribution of the upper and lower two parts of sinter, obtaining the quality difference of the upper and lower two parts of sinter, and adjusting the proportion of fuel in the upper layer and the lower layer mixture according to the difference; Step S4, comparing the image distribution of each micro region in the sintering car width direction, obtaining the average temperature Ti of each region, assuming that the ideal temperature fluctuation value of each micro region in the sintering car width direction is TA, and the ideal standard deviation is σ' T , and calculating the average value and the standard deviation σ T : If σ T ≤ σ' T , then the sintering system is operating normally; if σ T > σ' T , and then decrease the opening degree of the auxiliary door unit corresponding to the i-zone; If σ T > σ' T , and then increase the opening of the auxiliary door unit corresponding to the i-zone.

10. The sinter fuel split segregation distribution control method according to claim 9, characterized by, The step S3 includes the following steps: Step S31, if the upper layer sinter is overburned and the lower layer is underburned, the proportion of fuel in the upper layer and the lower layer mixture is reduced, that is, the amount of upper layer fuel is reduced, the amount of fuel in the lower layer mixture is increased, and the depth of the material surface mixing device into the material surface is increased; if the upper layer sinter is overburned and the lower layer is normally sintered, the amount of fuel in the lower layer mixture is maintained, but the amount of upper layer fuel is reduced; if the upper layer and the lower layer sinter are overburned, the proportion of fuel in the upper layer and the lower layer mixture is maintained, but the total amount of fuel addition is reduced. Step S32, if the upper layer sinter is normally sintered and the lower layer is underburned, the amount of upper layer fuel is maintained, and the amount of fuel in the lower layer mixture is increased; If the upper layer and the lower layer sinter are normally sintered, the original parameters are maintained for production; If the upper layer sinter is normally sintered and the lower layer is overburned, the amount of upper layer fuel is maintained, and the amount of fuel in the lower layer mixture is reduced; Step S33, if the upper layer sinter is underburned and the lower layer is underburned, the proportion of fuel in the upper layer and the lower layer mixture is maintained, and the total amount of fuel addition is increased; If the upper layer sinter is underburned and the lower layer is normally sintered, the amount of fuel in the lower layer mixture is maintained, and the amount of upper layer fuel is increased; If the upper layer sinter is underburned and the lower layer is overburned, the amount of upper layer fuel is increased, the amount of fuel in the lower layer mixture is reduced, and the depth of the material surface mixing device into the material surface is reduced.

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