阅读说明：本技术 高炉布料折翘溜槽及高炉布料设备 (Blast furnace distribution bending chute and blast furnace distribution equipment ) 是由 刘峪箫 黄雅彬 刘利军 于恒亮 邱建红 于 2021-11-04 设计创作，主要内容包括：本发明提供了一种高炉布料折翘溜槽,其包括具有布料腔的槽本体,所述槽本体包括第一直线段、第二直线段及翘嘴段,所述第一直线段用以接取从中心喉管处掉落的物料；沿所述槽本体的长度方向,所述第二直线段设置于所述第一直线段出料的一端,且所述第二直线段相对所述第一直线段向内侧倾斜设置；沿所述槽本体的长度方向,所述翘嘴段设置于所述第二直线段的远离所述第一直线段的一端,且所述翘嘴段相对所述第二直线段向内侧倾斜设置。同时,本发明提供了一种高炉布料设备,其包括所述高炉布料折翘溜槽。与现有技术相比,本发明提供的所述高炉布料折翘溜槽及高炉布料设备可以减小物料撞击的力度和动能损失,提高布料质量,提高溜槽的耐磨寿命。(The invention provides a blast furnace material distribution bending and warping chute which comprises a chute body with a material distribution cavity, wherein the chute body comprises a first straight line section, a second straight line section and a warping nozzle section, and the first straight line section is used for receiving materials falling from a central throat pipe; the second straight line section is arranged at one end of the first straight line section for discharging along the length direction of the groove body, and the second straight line section is obliquely arranged inwards relative to the first straight line section; the groove body is provided with a first straight line section, a second straight line section and a warped nozzle section, wherein the warped nozzle section is arranged at one end of the second straight line section, which is far away from the first straight line section, and the warped nozzle section is inclined towards the inner side relative to the second straight line section. Meanwhile, the invention provides a blast furnace material distribution device which comprises the blast furnace material distribution bending chute. Compared with the prior art, the blast furnace material distribution bending chute and the blast furnace material distribution equipment provided by the invention can reduce the loss of force and kinetic energy of material impact, improve the material distribution quality and prolong the wear-resisting life of the chute.)

1. The utility model provides a chute is perk to blast furnace cloth, its characterized in that, including the groove body that has the cloth chamber, the groove body includes:

the first straight line segment is used for receiving materials falling from the central throat pipe;

the second straight line section is arranged at one discharging end of the first straight line section along the length direction of the groove body, and the second straight line section is obliquely arranged inwards relative to the first straight line section;

the perk mouth section is along the length direction of groove body, set up in keeping away from of second straightway the one end of first straightway, just the perk mouth section is relative the inboard slope setting of second straightway.

2. The blast furnace burden distribution turn-up chute of claim 1, wherein the chute body further comprises:

the transition section is arranged between the first straight line section and the second straight line section, and smooth transition is formed between the transition section and the first straight line section as well as between the transition section and the second straight line section.

3. The blast furnace burden distribution turn-up chute of claim 2 wherein said transition section is a circular arc transition section.

4. The blast furnace burden distribution turnup chute of claim 3 wherein a smooth transition is provided between said turnup mouth section and said second straight section.

5. The blast furnace burden distribution turning chute of claim 4 wherein the angle of inclination of said second straight section relative to said first straight section is β₂Said beta is₂Within the following intervals:

0°＜β₂≤45°。

6. the blast furnace burden distribution turn-up chute of claim 5 wherein the angle of inclination of the turn-up mouth section relative to the second straight section is β₃Said beta is₃Within the following intervals:

0°＜β₃≤30°。

7. the blast furnace burden distribution bending chute according to any one of claims 2 to 6, wherein the first straight line segment comprises a first bottom wall and first side walls arranged on two sides of the first bottom wall, the transition segment comprises a second bottom wall and second side walls arranged on two sides of the second bottom wall, the second bottom wall is connected with the first bottom wall, each second side wall is correspondingly connected with one first side wall, the second straight line segment comprises a third bottom wall and third side walls arranged on two sides of the third bottom wall, the third bottom wall is connected with the second bottom wall, each third side wall is correspondingly connected with one second side wall, the mouth bending segment comprises a mouth bending bottom wall and a mouth bending side wall, the mouth bending bottom wall is connected with the third bottom wall, and each mouth bending side wall is correspondingly connected with one third side wall.

8. The blast furnace burden distribution turn-up chute of claim 7, wherein the cross section of the burden distribution cavity is one of circular arc, square, trapezoid and inverted trapezoid.

9. The blast furnace burden distribution folding and tilting chute as defined in any one of claims 1, 2, 3, 4, 5, 6 and 8, wherein the discharge port of the tilting nozzle section is a flat discharge port.

10. A blast furnace burden distribution equipment is characterized by comprising:

a central throat;

the blast furnace material distribution chute is arranged at the lower side of the central throat pipe;

wherein the blast furnace distribution chute is the blast furnace distribution folding chute of any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of blast furnace material distribution, in particular to a material distribution bending and warping chute of a blast furnace and material distribution equipment of the blast furnace.

Background

The blast furnace is the main equipment for steel smelting, and the blast furnace distributing chute is the main distributing equipment on the blast furnace. The structure of the blast furnace material distribution chute needs to be a symmetrical structure which is symmetrical to the section of the shaft of the blast furnace because the material is distributed around the center line of the blast furnace in a positive and negative rotation way.

As shown in fig. 1 and fig. 2, the profile of the material sliding structure on the symmetrical cross section of the distribution chute 300 of the blast furnace in the prior art is a straight line, the distribution amount increases in a square manner in the process of distributing the material from the center to the furnace wall of the blast furnace, but the profile of the material sliding structure gradually swings from the vertical direction to the horizontal direction, and the minimum included angle with the horizontal plane is about 30 degrees, and the distribution amount is maximum at the moment; but the angle of the material impacting the profile of the material sliding structure also reaches about 60 degrees at most, the impact causes the maximum loss of kinetic energy of the material and the maximum deceleration, and the velocity component along the profile direction is further reduced, namely the chute is in the state of the minimum material distributing capacity. And the possibility of material crushing is the greatest, and the powder can reduce the strength and the air permeability of the material layer. When distributing materials to the position close to the furnace wall, the blast furnace distributing chute 300 needs to tilt to the minimum included angle with the horizontal plane, the force and kinetic energy loss of materials impacting the blast furnace distributing chute 300 are increased, so that the distributing quality is influenced, the impact on the bottom of the blast furnace distributing chute 300 caused by the impact energy loss enables the blast furnace distributing chute 300 to bear larger impact abrasion, and the abrasion failure of the blast furnace distributing chute 300 is accelerated.

Disclosure of Invention

When the blast furnace distributing chute in the prior art distributes materials to the position close to the furnace wall, the blast furnace distributing chute needs to tilt to the minimum included angle with the horizontal plane, the force and kinetic energy loss of materials impacting the blast furnace distributing chute are increased, and therefore the technical problem of distributing quality is influenced. The invention provides a blast furnace material distribution bending chute which can effectively improve the material distribution quality.

The utility model provides a chute is perk to blast furnace cloth, its groove body including having the cloth chamber, the groove body includes:

the first straight line segment is used for receiving materials falling from the central throat pipe;

the second straight line section is arranged at one discharging end of the first straight line section along the length direction of the groove body, and the second straight line section is obliquely arranged inwards relative to the first straight line section;

the perk mouth section is along the length direction of groove body, set up in keeping away from of second straightway the one end of first straightway, just the perk mouth section is relative the inboard slope setting of second straightway.

Preferably, the tank body further comprises:

the transition section is arranged between the first straight line section and the second straight line section, and smooth transition is formed between the transition section and the first straight line section as well as between the transition section and the second straight line section.

Preferably, the transition section is a circular arc transition section.

Preferably, a smooth transition is formed between the warped nozzle section and the second straight section.

Preferably, the inclination angle of the second straight line segment relative to the first straight line segment is β 2, and β 2 is in the following interval:

0°＜β2≤45°。

preferably, the inclined angle of the warped nozzle section relative to the second straight section is β 3, and β 3 is in the following range:

0°＜β3≤30°。

preferably, the first straight line segment includes first diapire and set up in the first lateral wall of first diapire both sides, the changeover portion include the second diapire and set up in the second lateral wall of second diapire both sides, the second diapire with first diapire is connected, every the second lateral wall corresponds with one first lateral wall is connected, the second straightway include the third diapire and set up in the third lateral wall of third diapire both sides, the third diapire with the second diapire is connected, every the third lateral wall corresponds with one the second lateral wall is connected, stick up the mouth section including stick up the mouth diapire and stick up the mouth lateral wall, stick up the mouth diapire with the third diapire is connected, every mouth stick up the lateral wall correspond with one the third lateral wall is connected.

Preferably, the cross section of the cloth cavity is one of circular arc, square, trapezoid and inverted trapezoid.

Preferably, the discharge port of the warped nozzle section is a flat discharge port.

Meanwhile, the invention also provides a blast furnace material distribution device, which comprises:

the blast furnace material distribution chute is arranged at the lower side of the central throat pipe;

wherein, the blast furnace distribution chute is any one of the blast furnace distribution bending chute.

Compared with the prior art, the blast furnace material distribution bending and warping chute provided by the invention comprises a chute body with a material distribution cavity, wherein the chute body comprises a first straight line section, a second straight line section and a warping nozzle section, and the first straight line section is used for receiving materials falling from a central throat pipe; the second straight line section is arranged at one end of the first straight line section for discharging along the length direction of the groove body, and the second straight line section is obliquely arranged inwards relative to the first straight line section; the groove body is provided with a first straight line section, a second straight line section and a warped nozzle section, wherein the warped nozzle section is arranged at one end of the second straight line section, which is far away from the first straight line section, and the warped nozzle section is inclined towards the inner side relative to the second straight line section. Because the second straight line section is obliquely arranged towards the inner side compared with the first straight line section, and the tilting mouth section is obliquely arranged towards the inner side compared with the second straight line section, when the material is required to be distributed towards the furnace wall, the position amplitude of the blast furnace material tilting chute which needs to swing towards the horizontal direction is smaller, the minimum included angle between the first straight line section and the horizontal plane is enlarged as much as possible, the loss of force and kinetic energy of the material impacting the first straight line section is reduced, and the material distribution quality is effectively improved.

Correspondingly, the blast furnace material distribution equipment provided by the invention adopts the blast furnace material distribution bending chute, so that the loss of force and kinetic energy of materials impacting the blast furnace material distribution bending chute can be reduced, and the material distribution quality is effectively improved.

Correspondingly, the blast furnace material distribution equipment provided by the invention adopts the blast furnace material distribution bending chute, so that the loss of force and kinetic energy of materials impacting the blast furnace material distribution bending chute can be reduced, the impact wear to the bottom of the blast furnace material distribution bending chute is reduced, and the wear-resisting service life of the blast furnace material distribution bending chute is effectively prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a prior art blast furnace distribution chute;

FIG. 2 is a schematic position diagram of a blast furnace distribution chute in different use states in a blast furnace distribution apparatus of the prior art;

FIG. 3 is a schematic illustration showing the positions of a blast furnace distributing deflection chute and a prior art blast furnace distributing chute in the same state in a blast furnace distributing device according to an embodiment;

fig. 4 is a schematic structural view of a blast furnace distribution folding chute and a blast furnace distribution chute in the prior art in the same state in the blast furnace distribution equipment provided in the embodiment;

fig. 5 is a schematic structural view of the blast furnace burden distribution turn-up chute shown in fig. 4.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

The invention provides a blast furnace material distribution bending and warping chute which comprises a chute body with a material distribution cavity, wherein the chute body comprises a first straight line section, a second straight line section and a warping nozzle section, and the first straight line section is used for receiving materials falling from a central throat pipe; the second straight line section is arranged at one end of the first straight line section for discharging along the length direction of the groove body, and the second straight line section is obliquely arranged inwards relative to the first straight line section; the groove body is provided with a first straight line section, a second straight line section and a warped nozzle section, wherein the warped nozzle section is arranged at one end of the second straight line section, which is far away from the first straight line section, and the warped nozzle section is inclined towards the inner side relative to the second straight line section. The blast furnace material distribution bending chute can reduce the loss of the force and kinetic energy of material impact and improve the material distribution quality.

Please refer to fig. 3-5. The embodiment provides a blast furnace cloth bending and raising chute 100 which comprises a chute body 10 with a cloth cavity, so that when the blast furnace cloth bending and raising chute 100 is installed on the lower side of a central throat pipe 200, the material falling from the central throat pipe 200 can be well received and taken through the cloth cavity and conveyed to a required area of a blast furnace.

The trough body 10 comprises a first straight line section 11, a second straight line section 12 and a tilted mouth section 13, wherein the first straight line section 11 is used for receiving materials falling from the central throat pipe 200. Namely, after the blast furnace material distribution bending chute 100 is installed, the first straight line segment 11 is correspondingly located at the lower side of the blast furnace throat pipe 200, so that the material falling from the central throat pipe 200 can correspondingly fall onto the first straight line segment 11. Along the length direction of groove body 10, second straightway 12 set up in the one end of the ejection of compact of first straightway 11, just second straightway 12 is relative first straightway 11 is the inboard slope setting. Along the length direction of the groove body 10, the tip raising section 13 is arranged at one end, far away from the first straight line section 11, of the second straight line section 12, and the tip raising section 13 is arranged in an inwards inclined mode relative to the second straight line section 12. That is, the first straight line segment 11, the second straight line segment 12, and the raised mouth segment 13 are sequentially arranged along the length direction of the groove body 10. The second straight line segment 12 is inclined inwards relative to the first straight line segment 11, and the inclination is as follows: the setting angle of the second straight line segment 12 is bent towards the inner side (the side close to the cloth cavity) relative to the setting angle of the first straight line segment 11. Namely, the setting angles of the second straight line segment 12 and the first straight line segment 11 are not on the same straight line, and when the blast furnace material distribution bending chute 100 is installed and used, the second straight line segment 12 is bent towards the upper side. The tilted inward setting of the warped nozzle section 13 relative to the second straight section 12 means that: the setting angle of the warped nozzle section 13 is bent towards the inner side (the side close to the cloth cavity) relative to the setting angle of the second straight section 12. Namely, the setting angles of the warped nozzle section 13 and the second straight line section 12 are not on the same straight line, and when the blast furnace material distribution warped chute 100 is installed and used, the warped nozzle section 13 is bent towards the upper side.

It can be understood that the prior art blast furnace distribution chute 300 must be symmetrical in structure about the axial cross-section of the blast furnace due to the positive and negative distribution about the centerline of the blast furnace. In the prior art, the material sliding structure contour on the symmetrical section of the blast furnace material distribution chute 300 is a straight line, the material distribution amount is increased in a square manner in the process of distributing material from the center to the furnace wall of the blast furnace, but the material sliding structure contour gradually swings from the vertical direction to the horizontal direction and forms a minimum included angle alpha with the horizontal plane₀About 30 degrees, the cloth amount is maximum; but the angle of the contour line of the material sliding structure is impacted by the material to be about 60 degrees at most, the kinetic energy loss of the material is maximum and the deceleration is maximum due to the impact, and the velocity component along the contour line direction of the material sliding structure is further reducedI.e. the chute is in a state of minimum distribution capacity. And the possibility of material crushing is the greatest, and the powder can reduce the strength and the air permeability of the material layer.

If the influence of the gas flow in the furnace is neglected, the motion track of the material after leaving the chute is the inclined throwing motion, the radius of the hearth which can be reached by the material depends on the horizontal velocity component and the dead time, and the dead time depends on the height from the separation point to the material surface and the vertical velocity component. Both are closely related to the angle of inclined throwing (the included angle between the material speed and the horizontal plane), and taking the example that the outline line of the material sliding structure forms an included angle of 30 degrees with the horizontal plane, the vertical component of the falling speed of the material reaches 1/2.

And in order to adapt to the large-scale of the blast furnace, the material distribution chute of the blast furnace is continuously lengthened. The dead weight of the chute is increased according to the square number, the rotational inertia is increased according to about 4 th power, the driving mechanism is obviously increased, the time consumption of the reverse rotation direction is prolonged, and the operation is not flexible. In order to throw the material to the area of the hearth close to the furnace wall, the driving mechanism also increases the rotating speed to provide enough centrifugal force, which also leads the material at the bottom and the side of the chute to be more dispersed under the action of the Coriolis acceleration, and the quality of the distribution matrix is reduced.

In this embodiment, the blast furnace material distribution bending and raising chute 100 includes the first straight line segment 11, the second straight line segment 12 and the raising mouth segment 13, so that when material is required to be distributed at a position close to the furnace wall, the position amplitude of the blast furnace material distribution bending and raising chute 100 required to swing in the horizontal direction is smaller, the minimum included angle between the first straight line segment 11 and the horizontal plane is enlarged as much as possible, the loss of force and kinetic energy of the material impacting the first straight line segment 11 is reduced, and the material distribution quality is effectively improved.

Specifically, during material distribution, an included angle β between the first straight line segment 11 of the material received by the blast furnace bending chute 100 and the horizontal plane is₁Is larger than the included angle alpha between the blast furnace distributing chute 300 and the horizontal plane₀When the material in the central throat pipe 200 falls into the chute of the blast furnace bending chute 100, on one hand, the kinetic energy loss can be reduced, the material passing speed is improved, and on the other hand, the material impact can be reduced, so that the crushing of the blast furnace bending chute 100 is realized.

And when the material is discharged, beta is beta₁-β₂-β₃<α₀I.e. the angle between the separated material and the horizontal is less than alpha₀Velocity of material V_oIs decreased component V_ov＝V_oSin beta corresponding decrease, flat component V_H＝V_oThe cos beta is correspondingly increased, so that the dead time of the material can be prolonged, and the material can be horizontally thrown for a longer distance. When beta is₁<β₂+β₃When the material is changed from downward inclined throwing motion to upward inclined throwing motion, the material descending speed V is_vTo change from upward to downward, the descent dead time increases significantly.

When the beneficial effects of the height change of the material impact point, the kinetic energy loss and the like of the blast furnace bending chute 100 during blanking are not considered, only V is uniformly used_o5m/s, height H from separation point to charge level₀And (3 m) is as follows:

when alpha is₀When the angle is 30 degrees, the dead time t is 0.45s, and the flat throw distance L is 1.95 m.

When β is 20 °, the dead time t is 0.62s, and the flat throw distance L is 2.92 m.

When β is 10 °, the dead time t is 0.7s, and the flat throw distance L is 3.45 m.

When β is-5 °, the dead time t is 0.82s, and the flat throw distance L is 4.08 m.

The flat throw distance is the increase value of the radius of the cloth, and under the condition that beta is equal to-5 degrees and alpha 0 is equal to 30 degrees, the radius is increased by 2.1m and the diameter is increased by 4.2 m. At present 5500m³The diameter of the hearth of the blast furnace is about 18m, the distribution diameter limit is reached, the volume of the blast furnace is in direct proportion to the square of the radius, and if the diameter is increased by 4m, the volume of the blast furnace can reach 8000m³This has been shown to have a very important effect on the upsizing of the blast furnace. That is to say, through the furnace burden distribution bending chute 100, the burden distribution area can be increased as much as possible, the large-scale furnace can be better adapted, and a more favorable guarantee is provided for the large-scale furnace.

Preferably, the trough body 10 further includes a transition section 14, the transition section 14 is disposed between the first straight line section 11 and the second straight line section 12, and the transition section 14 and the first straight line section 11 and the second straight line section 12 are in smooth transition. Namely, the transition section 14 and the first straight line section 11 are in smooth transition, and the transition section 14 and the second straight line section 12 are in smooth transition. Wherein smooth transition means: the transition section 14 and the first straight line section 11, and the transition section 14 and the second straight line section 12 are connected in an area without steps, so that the circulation of materials is not obstructed, and the blockage of the materials is effectively avoided.

Preferably, the transition section 14 is an arc transition section, that is, the transition section 14 is in an arc structure, so that materials can be buffered better, and the blockage and accumulation of the materials are avoided.

Preferably, a smooth transition is formed between the warped nozzle section 13 and the second straight section 12. Namely the surface on one side of the cloth cavity, the connecting area of the warped nozzle section 13 and the second straight section 12 has no step, so that the circulation of materials is not obstructed, and the blockage of the materials is further avoided.

Preferably, the angle of inclination of the second straight line segment 12 relative to the first straight line segment 11 is β₂Said beta is₂Within the following intervals: beta is less than 0 DEG₂Less than or equal to 45 degrees, thereby effectively improving the material distribution quantity, reducing the material damage, reducing the material inclined throwing angle and increasing the material radius. More preferably, said beta₂Within the following intervals: beta is not more than 20 degrees₂Less than or equal to 30 degrees, thereby further ensuring the material distribution effect on the premise of improving the material distribution quantity and reducing the material damage.

Preferably, the inclined angle of the warped nozzle section relative to the second straight section is beta₃Said beta is₃Within the following intervals: beta is less than 0 DEG₃Is less than or equal to 30 degrees. Thereby can reduce the dynamics and the kinetic energy loss of material striking, improve the cloth quality, increase the cloth region. Angle of tilting mouth beta₃The lower throwing angle of the material can be further reduced, even the material is converted into flat throwing or upper throwing, and the radius of the material distribution is further increased. The tilting nozzle angle structure can also compress the thickness of material flow at the outlet of the chute, realize accurate material distribution, improve the quality of material distribution (matrix), accurately control the running state of the blast furnace and improve the running index of the blast furnace. More preferably, said beta₃Within the following intervals: 10 degrees or lessβ₃Less than or equal to 20 degrees, thereby further ensuring the material distribution effect on the premise of improving the material distribution quantity and reducing the material damage.

Preferably, the first straight line segment 11 includes a first bottom wall and a first side wall disposed on two sides of the first bottom wall, the transition segment 14 includes a second bottom wall and a second side wall disposed on two sides of the second bottom wall, the second bottom wall is connected to the first bottom wall, each of the second side walls corresponds to one of the first side wall, the second straight line segment 12 includes a third bottom wall and a third side wall disposed on two sides of the third bottom wall, the third bottom wall is connected to the second bottom wall, each of the third side walls corresponds to one of the second side wall, the mouth tilting segment 13 includes a mouth tilting bottom wall and a mouth tilting side wall, the mouth tilting bottom wall is connected to the third bottom wall, and each of the mouth tilting side walls corresponds to one of the third side wall. Namely, the first straight line section 11, the transition section 14, the second straight line section 12 and the mouth raising section 13 are all provided with side walls, so that materials can be effectively prevented from overflowing from the side face, and the quality of the cloth is guaranteed.

Preferably, the cross section of the cloth cavity is one of circular arc, square, trapezoid and inverted trapezoid.

Preferably, the discharge port of the warped nozzle section 13 is a flat discharge port. Namely, the periphery of the discharge hole of the blast furnace material distribution bending chute 100 is of a closed structure. It can be understood that the discharge gate of blast furnace distribution chute 300 among the prior art is open structure, and when rotatory in-process was to the blast furnace cloth, the material stream passed through blast furnace distribution chute inner chamber and got into the blast furnace and can be presented for the scattering form, and the centrifugal force that blast furnace distribution chute's rotary motion produced can make the scattering condition of material stream more serious, and the material stream distributes the blast furnace charge level and the material area that forms is wideer, is unfavorable for accurate technology operation. The accurate material distribution of a large blast furnace is realized by mainly controlling the height difference (thickness) of an outlet material layer, controlling the flow direction of the material layer and reducing material flow disorder. In the embodiment, the discharge port of the warped nozzle section 13 is of a flat structure, so that the height difference (thickness) of the material layer at the outlet is forcibly controlled, the material flow at the outlet is forcibly rectified, and the material flow section is of a rectangular flat shape. Make the material flow concentrate on the left side or the right side of flat export earlier (according to blast furnace cloth is rolled over to stick up chute 100 direction of rotation and left or right), come out the cloth from the discharge gate again and reach the blast furnace charge level, reduce the area that the scattering material flows, reduce the material and take the width, effectually avoided the material flow to diverge, disorderly, realized accurate cloth.

The blast furnace material distribution bending chute 100 increases the material distribution radius of the blast furnace chute, enlarges the cross section area of a hearth, and promotes the further large-scale of the blast furnace. The material sliding speed is improved, the material distribution amount is increased, and the further large-scale of the blast furnace is promoted. The blanking position precision is improved, the material distribution (matrix) quality is improved, the running state of the blast furnace is accurately controlled, and the running index of the blast furnace is improved. The height of the blast furnace dead zone is reduced. The chute length is shortened and the drive mechanism load is reduced.

Meanwhile, the embodiment also provides a blast furnace material distribution device, which comprises a central throat pipe 200 and the blast furnace material distribution bending and raising chute 100.

Compared with the prior art, the blast furnace material distribution bending and warping chute provided by the invention comprises a chute body with a material distribution cavity, wherein the chute body comprises a first straight line section, a second straight line section and a warping nozzle section, and the first straight line section is used for receiving materials falling from a central throat pipe; the second straight line section is arranged at one end of the first straight line section for discharging along the length direction of the groove body, and the second straight line section is obliquely arranged inwards relative to the first straight line section; the groove body is provided with a first straight line section, a second straight line section and a warped nozzle section, wherein the warped nozzle section is arranged at one end of the second straight line section, which is far away from the first straight line section, and the warped nozzle section is inclined towards the inner side relative to the second straight line section. Because the second straight line section is obliquely arranged towards the inner side compared with the first straight line section, and the tilting mouth section is obliquely arranged towards the inner side compared with the second straight line section, when the material is required to be distributed towards the furnace wall, the position amplitude of the blast furnace material tilting chute which needs to swing towards the horizontal direction is smaller, the minimum included angle between the first straight line section and the horizontal plane is enlarged as much as possible, the loss of force and kinetic energy of the material impacting the first straight line section is reduced, and the material distribution quality is effectively improved.

Correspondingly, the blast furnace material distribution equipment provided by the invention adopts the blast furnace material distribution bending chute, so that the loss of force and kinetic energy of materials impacting the blast furnace material distribution bending chute can be reduced, and the material distribution quality is effectively improved.

Correspondingly, the blast furnace material distribution equipment provided by the invention adopts the blast furnace material distribution bending chute, so that the loss of force and kinetic energy of materials impacting the blast furnace material distribution bending chute can be reduced, the impact wear to the bottom of the blast furnace material distribution bending chute is reduced, and the wear-resisting service life of the blast furnace material distribution bending chute is effectively prolonged.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.