阅读说明：本技术 一种多立缝烧结布料方法及系统 (Multi-vertical-seam sintering material distribution method and system ) 是由 于秋月 于卓然 于 2020-08-07 设计创作，主要内容包括：本发明涉及一种多立缝烧结布料方法及系统,采用由多个竖直刀片组成的烧结料断面成型装置在烧结混合料铺料过程中形成纵向连续、横向均匀分布的多条竖直立缝,竖直立缝是由大颗粒烧结料填充的透气缝,抽风烧结时,上层的空气能够以均匀风量自透气缝向下穿过整个烧结料层,并且在通过透气缝的同时,通过大颗粒烧结料之间的间隙向周围的烧结料层中渗透；从而增加烧结料层高度方向以及整体的加热均匀性,从而保证烧结过程均匀、快速地进行,有利于烧结生产实现高产、优质及低耗的目标。(The invention relates to a method and a system for distributing materials by sintering with multiple vertical seams, wherein a sintering material section forming device consisting of multiple vertical blades is adopted to form multiple vertical seams which are longitudinally continuous and transversely and uniformly distributed in the material spreading process of a sintering mixture, the vertical seams are air-permeable seams filled with large-particle sintering materials, and when air is pumped and sintered, air on the upper layer can downwards penetrate through the whole sintering material layer from the air-permeable seams with uniform air quantity and penetrates into the surrounding sintering material layer through gaps among the large-particle sintering materials while passing through the air-permeable seams; thereby increasing the height direction of the sintering material layer and the integral heating uniformity, ensuring the uniform and rapid sintering process, and being beneficial to realizing the aims of high yield, high quality and low consumption in the sintering production.)

1. A multi-vertical-seam sintering material distribution method is characterized in that a sintering machine head is provided with a sintering material section forming device, and the sintering material section forming device comprises a plurality of vertical blades transversely arranged along a sintering trolley; the sintering mixture adopts a vibration material distribution mode, so that large-particle sintering materials are distributed and then attached to two sides of the vertical blades, namely a segregation structure is formed between 2 adjacent vertical blades; when the vertical blade is pulled out from the paved sintering material layer after the sintering trolley moves, large-particle sintering materials are filled in gaps formed by the vertical blade, so that a plurality of vertical seams which are longitudinally continuous and transversely and uniformly distributed are formed in the sintering material layer, and the vertical seams are ventilation seams filled with the large-particle sintering materials; when air is blown out for sintering, the air on the upper layer can downwards penetrate through the whole sinter bed from the air permeable seam with uniform air quantity, and penetrates into the sinter bed on the periphery through the gap between large-particle sinter materials while passing through the air permeable seam.

2. The method for sintering the cloth through the multiple vertical seams as claimed in claim 1, wherein the vertical blade is vertically provided with 1 to multiple layers, and correspondingly, the air-permeable seams are continuous air-permeable seams or intermittent air-permeable seams.

3. The method for sintering cloth according to claim 2, wherein when the vertical blades are arranged in 2 layers or more, the vertical blades are arranged in an aligned or staggered manner.

4. The multi-vertical-seam sintering material distribution method according to claim 1, wherein a flow guide grid is arranged above the vertical blade; the flow guide grids are arranged along the transverse direction of the sintering trolley and correspond to the vertical blades one by one, and each flow guide grid is arranged right above the corresponding vertical blade and is positioned on a falling path of the sintering mixture.

5. The method for sintering and distributing materials through multiple vertical seams as claimed in claim 4, wherein the flow guide grid is long and has a rectangular, oval, wedge-shaped or diamond-shaped cross section.

6. The method for distributing materials through sintering in the multiple vertical seams as claimed in claim 1, wherein the sintering material section forming device is connected with a microwave heating device and used for heating the vertical blades and preventing the sintering mixture from adhering to the vertical blades while indirectly heating the sintering mixture.

7. The method for distributing materials through sintering in the multiple vertical seams as claimed in claim 1, wherein an atomization device is further arranged above the sintering material section forming device, and the sintering mixture is assisted to move into balls through spraying and humidifying.

8. The multi-vertical-seam sintering material distribution system for realizing the method of any one of claims 1 to 7 is characterized by comprising an oscillating material distribution device and a sintering material section forming device; the sintering material section forming device consists of a supporting beam and a plurality of vertical blades; the supporting beam is fixedly arranged on a base support of the head of the sintering machine, the arrangement direction of the vertical blades is parallel to the moving direction of the sintering trolley, and the vertical blades are uniformly arranged along the transverse direction of the sintering trolley; the vibrating distributing device is arranged above the sintering section forming device, the upper end material of the vibrating distributing device is connected with the discharge hole of the distributing hopper, and the discharging end of the vibrating distributing device is positioned above the vertical blade; the oscillating distributing device has horizontal oscillating motion along the transverse direction of the sintering trolley.

9. The multi-vertical-seam sintering material distribution system according to claim 8, wherein the flow-guiding grids above the vertical blades are connected through a frame or an intermediate connecting plate.

10. The multi-vertical-seam sintering material distribution system according to claim 8, further comprising a microwave heating device and an atomizing device; the microwave heating device and the atomizing device are respectively fixed on a basic bracket of the head of the sintering machine through corresponding mounting brackets.

Technical Field

The invention relates to the technical field of iron ore sintering, in particular to a material distributing method and a material distributing system for multi-vertical-seam sintering.

Background

Iron ore sintering is one of the main methods for agglomeration of iron ore, and the process is to mix iron ore concentrate obtained by ore dressing of lean iron ore, fine ore generated in the crushing and screening process of rich iron ore, iron-containing powder (blast furnace and converter dust, continuous casting steel rolling iron sheet, etc.) recovered in the production, flux (limestone, quicklime, slaked lime, dolomite, magnesite, etc.) and fuel (coke powder and anthracite) according to the required proportion, add water to mix them to prepare granular sintering mixture, lay it on a sintering trolley, and sinter it into blocks by ignition and air draft.

At present, the most widely used equipment for producing sintered ore is a belt type air draft sintering machine, and the technological process comprises the main procedures of material distribution, ignition, sintering and the like. Wherein, the material distribution refers to the operation of spreading the bottom material and the mixture on a sintering machine trolley. Most of the materials adopt a bedding material process, namely, before the sintered mixture is distributed, a layer of small sintered ore with the granularity of 10-25 mm and the thickness of 20-25 mm is paved as a bedding material, so that the purpose is to protect a grate, reduce the dust removal load, prolong the service life of a fan rotor and reduce or eliminate the adhesion of the grate. After the bottom material is paved, the material is distributed. The air draft sintering process of the strand sintering machine is carried out from top to bottom, the temperature change condition along the height of the material layer can be generally divided into 5 layers, and the reaction change condition in each layer is shown in figure 1. After ignition begins, a sintered ore layer, a combustion layer, a preheating layer, a drying layer and an over-wet layer appear in sequence. The latter four layers then disappear successively, leaving only a sintered ore layer.

The segregation material distribution in the sintering ore material distribution process can improve the air permeability of the material layer, so that the solid fuel is more reasonably distributed along the height direction of the sintering material layer, the sintering process can be uniformly and quickly carried out, the whole sintering process tends to be stable, and the segregation material distribution method has important significance for high yield, high quality and low consumption of sintering production. In the sintering production process, along with the thickening of a sintering material layer, the airflow resistance passing through the material layer is increased, the sintering speed is reduced, the power consumption of a fan in a sintering air box is increased, and the sintering productivity is reduced; therefore, the air permeability of the sinter mix must be improved during sintering of the thick bed.

In order to enhance the air permeability of the sinter bed, increase the temperature of the mixed bed and increase the sintering yield, a material loosening device is commonly adopted at present. The material loosening device has various structural forms, wherein a hollow rod-shaped material loosening device with a blind dead end and a heating hole is commonly applied, such as a material loosening device for distributing materials of a sintering machine, which is disclosed by the Chinese utility model patent with the authorization publication number of CN203068967U, a material loosening device for drying and preheating, which is disclosed by the Chinese utility model patent with the authorization publication number of CN 201662327U, and the like; the purpose is to improve the looseness of a mixed material layer of a sintering machine trolley and improve the material uniformity of the material layer in the vertical direction. However, the material loosening device has the following disadvantages in loosening the material rods: 1. transverse holes with the same aperture as the loose material rod are left in the mixed material layer when the loose material rod is pulled out, so that the middle part of the material layer is affected to form ore; 2. the air path is short-cut, so that the finished sintered ore has good air permeability, the air quantity flows horizontally through the cavity of the material loosening rod under the action of negative pressure, the loss of the negative pressure is substantial although a certain preheating effect is achieved, the pressure difference of a vertical material layer is reduced, and the combustion speed is slowed down.

Disclosure of Invention

The invention provides a multi-vertical-seam sintering material distribution method and a multi-vertical-seam sintering material distribution system, wherein a vibration material distribution mode is adopted, the multi-vertical-seam sintering material distribution method is matched with a sintering material section forming device consisting of a plurality of vertical blades, a plurality of vertical seams which are longitudinally continuous and transversely and uniformly distributed are formed in the material spreading process of a sintering mixture, the vertical seams are air-permeable seams filled with large-particle sintering materials, and when air is sucked and sintered, air on the upper layer can downwards penetrate through the whole sintering material layer from the air-permeable seams with uniform air volume and penetrates into the surrounding sintering material layer through gaps among the large-particle sintering materials while passing through the air-permeable seams; thereby increasing the height direction of the sintering material layer and the integral heating uniformity, ensuring the uniform and rapid sintering process, and being beneficial to realizing the aims of high yield, high quality and low consumption in the sintering production.

In order to achieve the purpose, the invention adopts the following technical scheme:

a sintering material distributing method with multiple vertical seams is characterized in that a sintering machine head is provided with a sintering material section forming device, and the sintering material section forming device comprises a plurality of vertical blades which are transversely arranged along a sintering trolley; the sintering mixture adopts a vibration material distribution mode, so that large-particle sintering materials are distributed and then attached to two sides of the vertical blades, namely a segregation structure is formed between 2 adjacent vertical blades; when the vertical blade is pulled out from the paved sintering material layer after the sintering trolley moves, large-particle sintering materials are filled in gaps formed by the vertical blade, so that a plurality of vertical seams which are longitudinally continuous and transversely and uniformly distributed are formed in the sintering material layer, and the vertical seams are ventilation seams filled with the large-particle sintering materials; when air is blown out for sintering, the air on the upper layer can downwards penetrate through the whole sinter bed from the air permeable seam with uniform air quantity, and penetrates into the sinter bed on the periphery through the gap between large-particle sinter materials while passing through the air permeable seam.

The vertical blade is vertically provided with 1 to multiple layers, and correspondingly, the air permeable seams are continuous air permeable seams or intermittent air permeable seams.

When the vertical blades are arranged to be more than 2 layers, the vertical blades of each layer are aligned or staggered.

A flow guide grid is arranged above the vertical blade; the flow guide grids are arranged along the transverse direction of the sintering trolley and correspond to the vertical blades one by one, and each flow guide grid is arranged right above the corresponding vertical blade and is positioned on a falling path of the sintering mixture.

The flow guide grid is in a strip shape, and the cross section of the flow guide grid is in a rectangular shape, an oval shape, a wedge shape or a rhombic shape.

The sintering material section forming device is connected with the microwave heating device and used for heating the vertical blade, and the sintering mixture is prevented from being adhered to the vertical blade while the sintering mixture is indirectly heated.

And an atomization device is also arranged above the sintering material section forming device, and the sintering mixture is assisted to move into balls through spraying and humidifying.

The multi-vertical-seam sintering and distributing system for the method comprises a vibration distributing device and a sintering material section forming device; the sintering material section forming device consists of a supporting beam and a plurality of vertical blades; the supporting beam is fixedly arranged on a base support of the head of the sintering machine, the arrangement direction of the vertical blades is parallel to the moving direction of the sintering trolley, and the vertical blades are uniformly arranged along the transverse direction of the sintering trolley; the vibrating distributing device is arranged above the sintering section forming device, the upper end material of the vibrating distributing device is connected with the discharge hole of the distributing hopper, and the discharging end of the vibrating distributing device is positioned above the vertical blade; the oscillating distributing device has horizontal oscillating motion along the transverse direction of the sintering trolley.

And the plurality of flow guide grids above the vertical blades are connected through a frame or an intermediate connecting plate.

The multi-vertical-seam sintering and distributing system further comprises a microwave heating device and an atomizing device; the microwave heating device and the atomizing device are respectively fixed on a basic bracket of the head of the sintering machine through corresponding mounting brackets.

Compared with the prior art, the invention has the beneficial effects that:

1) compared with a material loosening device, the gap formed by the sintering material section forming device is filled with large-particle sintering materials, and a cavity cannot be formed in a sintering material layer, so that negative pressure loss caused by the fact that the cavity flows along the material loosening device due to the fact that a wind path is short cut is avoided; can reduce the pressure difference of the vertical material layer and slow down the combustion speed.

2) According to the invention, the oscillating distributing device is matched with the plurality of vertical blades arranged in the sintering material section forming device, so that the movement track of the sintering mixture is oscillated, oscillated and accelerated during distributing, the large-particle sintering material moves and gathers to two sides after being oscillated and accelerated, and then stays at two sides of the vertical blades, the movement speed of the residual small-particle sintering material is gradually reduced, and finally stays at the middle area between the adjacent 2 vertical blades;

3) when the sintering trolley moves, the paved sintering material layer is separated from the vertical blade, the slit formed by the vertical blade is quickly filled with large-particle sintering materials on two sides, and a low-density accumulation area of the large-particle sintering materials, namely a plurality of ventilation seams filled with the large-particle sintering materials, is formed at the original position of the vertical blade; because the large-particle sintering materials have self-supporting function, the vertical seam can not form a cavity, and a loose structure with a plurality of air-permeable channels is formed;

4) when air is drawn for sintering, the air on the upper layer can downwards penetrate through the whole sintering material layer from the air permeable seam with uniform air quantity, and penetrates into the surrounding sintering material layer through the gaps among large-particle sintering materials while passing through the air permeable seam;

5) by additionally arranging the flow guide grid, direct impact of the sintering mixture on the vertical blade can be prevented, and the service life of the sintering material section forming device is prolonged; meanwhile, the distribution effect of large-particle sintering materials on two sides of the vertical blade can be further enhanced;

6) by additionally arranging the microwave heating device, the sintering mixture can be indirectly heated through the vertical blade, the temperature of a sintering material layer is increased, and meanwhile, the sintering mixture can be prevented from being adhered to the vertical blade;

7) by additionally arranging the atomizing device, the humidifying function on the sintering mixture can be realized, and the sintering mixture is promoted to move to form balls in the material distribution process, so that the vertical seam type material distribution effect is enhanced; meanwhile, the atomization device can also strengthen the heating effect of the microwave heating device.

Drawings

FIG. 1 is a schematic diagram of the working principle of the method for sintering a cloth by multiple vertical seams.

Fig. 2 is a view a-a in fig. 1.

Fig. 3 is a partially enlarged view of fig. 2.

Fig. 4 is a schematic view of the oscillating cloth according to the present invention.

FIG. 5 is a side view of the sinter cross-section forming apparatus of the present invention.

FIG. 6 is a schematic view showing the distribution of the vertical blades and the flow-guiding fence of the present invention along the transverse direction of the sintering pallet.

FIG. 7 is a schematic diagram of the motion trace of the oscillating cloth of the large-particle sintered material according to the present invention.

FIG. 8 is a schematic diagram of the movement trace of the oscillating distribution of the small-particle sintering material according to the present invention.

In the figure: 1. distributing hopper 2, oscillating distributing device 3, flow guide grid 4, sintering material section forming device 41, support frame 42, vertical blade 5, sintering trolley 6, sintering material layer 61, vertical seam 7, sintering air box 8 and large-particle sintering material

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in FIG. 1, in the method for distributing materials by multi-vertical seam sintering, a sintering machine head is provided with a sintering material section forming device, and the sintering material section forming device 4 comprises a plurality of vertical blades 42 arranged along the transverse direction of a sintering trolley 5; the sintering mixture adopts a vibration material distribution mode (as shown in fig. 4), so that large-particle sintering materials 8 are distributed and then attached to two sides of the vertical blades 42, namely, segregation structures are formed between 2 adjacent vertical blades 42; when the vertical blade 42 is pulled out from the paved sinter bed 6 after the sintering trolley 5 moves, the large-particle sinter 8 is filled in the gap formed by the vertical blade 42, so that a plurality of vertical seams 61 (shown in fig. 2) which are longitudinally continuous and transversely and uniformly distributed are formed in the sinter bed 6, and the vertical seams 61 are air-permeable seams (shown in fig. 3) filled with the large-particle sinter 8; when air is drawn for sintering, the air on the upper layer can penetrate through the whole sintering material layer 6 from the air-permeable seams downwards with uniform air quantity, and the air penetrates into the surrounding sintering material layer 6 through gaps among large-particle sintering materials 8 while passing through the air-permeable seams.

As shown in fig. 5, the vertical blade 42 is vertically provided with 1 to multiple layers, and correspondingly, the air permeable seam is a continuous air permeable seam or an intermittent air permeable seam.

When the vertical blades 42 are arranged in more than 2 layers, the vertical blades 42 in each layer are aligned or staggered.

A flow guide grid 3 (shown in fig. 6) is arranged above the vertical blade 42; the flow guide grids 3 are arranged along the sintering trolley 5 in a one-to-one correspondence manner with the vertical blades 42, and each flow guide grid 3 is arranged right above the corresponding vertical blade 42 and is positioned on a falling path of the sintering mixture.

The flow guide grid 3 is long-strip-shaped, and the cross section of the flow guide grid is rectangular, oval, wedge-shaped or rhombic.

The sintering material section forming device 4 is connected with a microwave heating device and used for heating the vertical blade 42, and sintering mixture is prevented from being adhered to the vertical blade 42 while the sintering mixture is indirectly heated.

An atomization device is further arranged above the sintering material section forming device 4, and the sintering mixture is assisted to move into balls through spraying and humidifying.

The multi-vertical-seam sintering and distributing system for realizing the method comprises a vibration distributing device 2 and a sintered material section forming device 4; the sintering material section forming device 4 consists of a support beam 41 and a plurality of vertical blades 42; the supporting beam 41 is fixedly arranged on a basic bracket of the head part of the sintering machine, the arrangement direction of the vertical blades 42 is parallel to the moving direction of the sintering trolley 5, and the vertical blades 42 are uniformly arranged along the transverse direction of the sintering trolley 5; the oscillating distributing device 2 is arranged above the sintering section forming device 4, an upper material of the oscillating distributing device 2 is connected with a discharge hole of the distributing hopper 1, and a discharging end of the oscillating distributing device 2 is positioned above the vertical blade 42; the oscillating distribution device 2 has a horizontal oscillating movement in the transverse direction of the sintering trolley 5.

The guide grids 3 above the vertical blades 42 are connected by a frame or an intermediate connecting plate.

The multi-vertical-seam sintering and distributing system further comprises a microwave heating device and an atomizing device; the microwave heating device and the atomizing device are respectively fixed on a basic bracket of the head of the sintering machine through corresponding mounting brackets.

According to the invention, the oscillation distributing device 2 is matched with a plurality of vertical blades 42 arranged in the sintering material section forming device 4, and the amplitude of the oscillation distributing device 2 is matched with the arrangement intervals of the vertical blades 42; during material distribution, the movement locus of the sintering mixture is oscillated and accelerated, so that the large-particle sintering materials 8 move and gather to two sides after being oscillated and accelerated, and then stay at two sides of the vertical blades 42 (as shown in fig. 7), the movement speed of the residual small-particle sintering materials is gradually reduced, and finally stay at the middle area between the adjacent 2 vertical blades 42 (as shown in fig. 8).

When the sintering trolley 5 moves, the paved sintering material layer 6 is separated from the vertical blade 42, the slit formed by the vertical blade 42 is rapidly filled with the large-particle sintering materials 8 on the two sides, and a low-density accumulation area of the large-particle sintering materials, namely a plurality of ventilation slits filled with the large-particle sintering materials 8, is formed at the original position of the vertical blade 42; because the large-particle sintered materials 8 have self-supporting function, no cavity is formed at the vertical seam, and a loose structure with a plurality of air-permeable channels is formed (as shown in figures 2 and 3).

During air draft sintering, a plurality of sintering bellows 7 are drafted simultaneously through the fan, and the air above the sinter bed 6 can penetrate through the whole sinter bed 6 downwards from the ventilation seams with uniform air quantity, and penetrates into the sinter bed 6 on the periphery through gaps among large-particle sinter materials 8 while passing through the ventilation seams. Thereby increasing the height direction of the sinter bed 6 and the integral heating uniformity, ensuring the sintering process to be carried out uniformly and quickly, and being beneficial to realizing the aims of high yield, high quality and low consumption in sintering production.

By additionally arranging the flow guide grid 3, the direct impact of the sintering mixture on the vertical blade 42 can be prevented, and the service life of the sintering material section forming device 4 is prolonged; meanwhile, the distribution effect of the large-particle sintering materials 8 on the two sides of the vertical blade 42 can be further enhanced.

By additionally arranging the microwave heating device, the sintering mixture can be indirectly heated through the vertical blade 42, the temperature of the sinter bed 6 is increased, and meanwhile, the sintering mixture can be prevented from being adhered to the vertical blade 42;

by additionally arranging the atomizing device, the humidifying function on the sintering mixture can be realized, and the sintering mixture is promoted to move to form balls in the material distribution process, so that the vertical seam type material distribution effect is enhanced; meanwhile, the atomization device can also strengthen the heating effect of the microwave heating device.

The microwave heating device and the atomizing device of the invention are conventional commercial finished products, which are the prior art, and the specific structure and the working principle are not repeated herein.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.