Novel blast furnace distribution chute

Abstract

The invention discloses a novel blast furnace distribution chute which mainly comprises a suspension system, a side steel shell, a chute bottom steel shell, a chute bottom inner curved surface, a lower straight section, an upper end plate, a lower end plate and a wear-resistant ceramic block layer, the suspension system and the side steel shell are manufactured into a whole; the chute bottom inner curved surface is positioned at the chute bottom opposite to the inclined edge of the opening side in the length direction of the chute, and the lower straight section is positioned below the chute bottom inner curved surface; a wear-resistant ceramic block layer and a tank bottom steel shell are sequentially arranged on the inner curved surface of the tank bottom outwards; the wear-resistant ceramic block layer is laid in a masonry mode; the fallen furnace charge falls into the curved surface starting part of the inner curved surface of the chute bottom in the tangential direction, and the impact force generated when the furnace charge falls is converted into sliding along the curved surface by utilizing the inner curved surface of the chute bottom, so that the impact force of the furnace charge on the chute is reduced, the abrasion to the chute is reduced, and meanwhile, the furnace charge can be prevented from bouncing when falling onto the chute; due to the fact that the gradient of the lower straight section below the inner curved surface of the groove bottom is small, the furnace burden can be rapidly decelerated when sliding into the lower straight section from the inner curved surface of the groove bottom, and therefore the furnace burden can be prevented from being rushed out too fast.

Description

Technical Field

[0001] The present invention relates to the field of blast furnace burden distributing launders in the iron and steel industry, and specifically to a novel blast furnace burden distributing launder designed and manufactured using the "curved surface" principle. Background Art

[0002] The idea of designing and manufacturing a blast furnace burden distributing launder using the "curved surface" principle originated from the "curved surface" design of ancient Chinese architectural roofs and the successful application of "U-shaped pools (U-shaped troughs)" in sports events; especially in the sports event of U-shaped pools (U-shaped troughs), by utilizing the characteristic that the landing position of the athlete is at the starting part of the "pool wall curved surface" of the U-shaped pool (U-shaped trough), when the athlete slides down along the curved surface, they can make full use of the progressive pressure gradient provided by the pool wall curved surface to obtain a relatively fast speed, and the peak value of the landing impact force is reduced by 37% compared to a flat field, thus ensuring the safety of the athlete; therefrom, it was associated that if the "pool wall curved surface" of the U-shaped pool (U-shaped trough) is used for the blast furnace burden distributing launder, that is, a "curved surface" is set at the "material dropping point" of the launder, and the "material dropping point" is determined at the "starting part of the curved surface" of the launder, and the burden slides down along the curved surface and then slides out of the launder, it will be able to greatly reduce the impact force of the burden on the blast furnace burden distributing launder, and at the same time can reduce the wear on the launder, and can also effectively maintain the unchanged burden distribution law of the launder.

[0003] Regarding the above association, an investigation was conducted on the specific usage situation of the existing blast furnace burden distributing launders; the investigation found that currently, the vast majority of blast furnace burden distributing launders focus on wear resistance while ignoring the impact on blast furnace burden distribution; because through investigation and analysis, it can be seen that the impact of the burden distributing launder on blast furnace burden distribution has far exceeded the wear resistance problem; especially after each replacement of a new launder, it often takes several days to explore a new burden distribution law by adjusting the angle of the burden distributing launder and other methods before the blast furnace can gradually return to normal; however, the impact on the blast furnace technical and economic indicators, especially the economic benefits, caused by the change of the burden distribution law of the launder during these days, is at least tens of thousands and at most hundreds of thousands, and this loss has far exceeded the value of a single burden distributing launder; it is not difficult to see that if we only consider the wear resistance problem of the burden distributing launder and ignore its impact on blast furnace burden distribution, it will be a case of attending to one thing and losing sight of another and making a fuss about trifles.

[0004] Through investigation and analysis, it is also found that the existing blast furnace charging chute has two main reasons that affect the charging regularity of the blast furnace. One is the structure of the chute itself, and the other is the shape of the wear-resistant components and the installation and layout of the wear-resistant components. The so-called structure of the chute itself means that the chute itself does not have a reasonable "curved surface" that can receive the falling charge. The so-called shape of the wear-resistant components and the installation and layout of the wear-resistant components mainly refer to the fact that some wear-resistant components have a large "protrusion", which causes the charge to "bounce" or even "splash" when it falls on them, especially coke is most likely to be splashed out of the chute. A detailed study also found that when a shorter chute is used, the charge is prone to "bounce once" when it falls on the chute, making it Using a longer chute can result in "double bounces", and the "bounce" of the charge on the chute causes the charge to scatter and the distribution pattern to become disordered. The study also found that for an "old chute" that has been used for a period of time, because of a period of use and wear, when the charge falls on the chute, its "bounce" amplitude will be significantly reduced, and the charge will appear to be smoother when flowing downward on the chute. After replacing the new chute, especially when the "protruding amplitude" of the wear-resistant component is large, the charge will suddenly increase its "bounce or splashing" amplitude when it lands on it, thus causing the distribution pattern to become disordered, resulting in a decrease in the blast furnace production technical indicators and a decline in economic benefits.

[0005] In order to use the "curved surface" principle to solve the above-mentioned problems existing in the blast furnace charging chute, a patent with an application number of 201611107047.3 was retrieved. This patent uses a "large arc concave surface" combined with "arc material blocking ribs" and "small arc convex surfaces" to "block materials" in order to form a "material pad" in the chute to reduce the wear of the chute. It can be seen from the content recorded in the patent document that the original intention of the patent and the problem to be solved are the wear resistance of the chute. However, combined with the above investigation and research, it is found that the "arc material blocking ribs" set by it provide conditions and opportunities for the "bouncing" of the charge, which is the main reason affecting the stability of the charging regularity of the chute. In addition, its "arc material blocking ribs" will also have wear problems. Once worn, the height inconsistency between the new and old periods will appear, and the above-mentioned problem of needing to re-explore the charging regularity after replacing the new chute will occur. These problems are obviously the same as those found in the previous investigation, and are all factors affecting the stability of the charging regularity of the chute.

[0006] In view of the above problems, the present invention introduces a new type of blast furnace charging chute designed and manufactured using the "curved surface" principle. The chute utilizes the fact that the charge lands on the "starting part of the curved surface" and slides downward along the "curved surface" to reduce the impact and wear of the charge on the charging chute and avoid "bouncing or splashing" of the charge when it lands on the chute, so as to keep the charging pattern unchanged. Summary of the invention

[0007] The objectives and technical tasks of the present invention are: to provide a new type of blast furnace burden distributing chute designed and manufactured using the "curved surface" principle. This chute utilizes the fact that the burden lands on the "starting part of the curved surface" and slides downward along the "curved surface" to reduce the impact and wear of the burden on the distributing chute, thereby avoiding "bouncing or splashing" when the burden lands on the chute, and comprehensively eliminating the impact of the distributing chute on the blast furnace, so as to facilitate the long-term stable operation of the blast furnace.

[0008] The technical measures and implementation steps taken to achieve the above objectives and technical tasks are as follows: I. Through research and confirmation, the "curved surface" principle, including the theoretical basis of the "U-shaped pool (U-shaped groove)" principle, all originates from the "brachistochrone (cycloid)" principle; due to the profound theoretical basis of the "brachistochrone (cycloid)" principle, it is considered that it is completely feasible and pioneering to design and manufacture a blast furnace burden distributing chute using this principle.

[0009] II. For the new type of blast furnace burden distributing chute designed and manufactured using the "curved surface" principle, the length direction of the chute is defined as the axial direction, and the "hypotenuse" on the opening side in the length direction of the chute is defined as the "reference edge"; the opposite direction of the "hypotenuse" is called the "bottom of the chute" (which is actually the bottom of the chute); the two sides and the lower three directions shown in the axial view (i.e., the axial end view), that is, the end face, are defined as the "radial direction", and the bottom of the chute shown in the axial view is defined as the "radial bottom of the chute".

[0010] III. The composition of a new type of blast furnace burden distributing chute of the present invention is described with reference to the above principle and the above definitions; this chute mainly consists of a "curved inner surface of the bottom of the chute, lower straight section, suspension system, steel structure shell, and wear-resistant porcelain block layer"; the steel structure shell includes side steel shells, suspension systems, bottom steel shells of the chute, upper end plates, and lower end plates; the suspension system is integrated with the side steel shells, and the wear-resistant porcelain block layer is built with wear-resistant porcelain blocks.

[0011] IV. Establishment of the "inner curved surface of the trough bottom": In this application, taking the "hypotenuse" on the opening side in the length direction of the side steel shell as the reference, with the lower end of the "hypotenuse" as the starting point, the 2 / 3 point between the starting point and the "blanking point of the inner contour of the original configured chute" upward is taken as the center of the circle, and the distance from the starting point upward to the above-mentioned "center of the circle" is taken as the radius, and an arc is drawn on the opposite side of the "hypotenuse" to form the "inner curved surface of the trough bottom", that is, taking this "arc" as the "inner curved surface of the trough bottom"; taking this "inner curved surface of the trough bottom" as the reference, an additional wear-resistant porcelain block layer and a trough bottom steel shell are added outward; including the trough bottom steel shell and the inner curved surface of the trough bottom, both can be divided into three sections according to the shape. The middle section is the "curved surface section" (inner curved surface of the trough bottom), there is an "upper straight section" above the "curved surface section", and a "lower straight section" below the "curved surface section"; the novel blast furnace burden distributing chute of the present application can set the blanking point at the "starting part of the curved surface" of the "inner curved surface of the trough bottom", so that when the burden falls from above, it can fall into the "starting part of the curved surface" along the tangent direction, and use the "inner curved surface of the trough bottom" to convert the impact force when the burden descends into sliding along the curved surface, thereby reducing the impact force and wear force of the burden on the chute, and thus avoiding "bouncing or splashing" when the burden falls on the chute; since this chute also has a "lower straight section" with a smaller slope below the "curved surface section" (inner curved surface of the trough bottom), therefore, when the burden slides from the "inner curved surface of the trough bottom" into the "lower straight section", it can be quickly decelerated, so as to avoid the burden from rushing out too fast.

[0012] V. The steel structure shell of the novel blast furnace burden distributing chute of the present invention and its composition method: The trough bottom steel shell is composed of a "curved surface section", a "lower straight section" and an "upper straight section"; the upper end of the "curved surface section" is connected to the lower end of the "upper straight section" in a tangent manner and makes it smoothly transition. The upper end of the "upper straight section" is positioned at the bottom of the upper opening of the "inner contour of the original configured chute" and is connected and fixed to the "side steel shell"; the lower end of the "curved surface section" is connected to the upper end of the "lower straight section" in a tangent manner and makes it smoothly transition. The lower end of its "lower straight section" is positioned through the extension line of the bottom of the lower opening of the "inner contour of the original configured chute" and is connected and fixed to the "side steel shell"; the "trough bottom steel shell" containing the "lower straight section", "curved surface section" and "upper straight section" can be manufactured in sections and then combined by welding or can also be manufactured integrally; that is, after the "side steel shell" and the "suspension system" are made into one, they are respectively welded on both sides of the "trough bottom steel shell"; the "upper end plate" and the "lower end plate" are also combined with the "side steel shell" and the "trough bottom steel shell" by welding; the whole set of chute steel structure parts containing two "side steel shells" including the "suspension system" and the "trough bottom steel shell" and the "upper end plate" and the "lower end plate" can also be integrally manufactured by casting.

[0013] VI. After the above steel structure components are completed by welding combination or integral casting, on the premise of confirming and ensuring the installation accuracy of the "suspension system", the "wear-resistant porcelain block layer" inside is constructed, and the thickness of the "wear-resistant porcelain block layer" can be selected according to the designed service life of the chute.

[0014] VII. The shape of the chute bottom shown axially in this chute is realized in three ways: the first is that the radial chute bottom is semi-circular; the second is that the radial chute bottom is "flat-bottom right-angle type" (i.e., observed axially); the third is that the radial chute bottom is arc-shaped; when the "semi-circular" radial chute bottom is adopted, its upper end plate and lower end plate also need to be designed and manufactured with the lower part being semi-circular; when the "flat-bottom right-angle type" radial chute bottom is adopted, its upper end plate and lower end plate also need to be designed and manufactured to be similar to the shape of "concave"; when the "arc-shaped" chute bottom is adopted, its upper end plate and lower end plate also need to be designed and manufactured according to the required shape with the bottom being "arc-shaped".

[0015] The outstanding features and beneficial effects of the "novel blast furnace burden distributing chute" of the present invention: 1. The novel blast furnace burden distributing chute designed and manufactured by the present invention utilizes the principle of "brachistochrone (cycloid)" and draws on the successful experience of "U-shaped pool (U-shaped trough)" used in sports events. Therefore, it has sufficient theoretical basis and practical reference.

[0016] 2. For the "material dropping point" part where the burden distributing chute is most severely impacted and worn, the novel blast furnace burden distributing chute of the present invention is provided with a "curved surface at the bottom of the chute". Therefore, the burden can fall from the tangential direction into the "starting part of the curved surface" of the "curved surface at the bottom of the chute", so as to utilize the "curved surface at the bottom of the chute" to absorb the impact force of the burden falling on the burden distributing chute to the maximum extent, reduce the wear on the chute, and effectively avoid the "bouncing or splashing" of the burden when it falls onto the chute, so that the chute can maintain the charging law unchanged.

[0017] 3. Since a section of "lower straight section" with a relatively small slope is also provided under the "curved surface at the bottom of the chute" of this chute, the sliding speed of the burden can be quickly reduced, thus avoiding the problem that the "outrush" speed of the burden is too fast due to the acceleration of the sliding speed when the burden falls along the tangent of the "curved surface at the bottom of the chute".

[0018] 4. Since the material dropping point of the novel blast furnace burden distributing chute of the present invention is at the "starting part of the curved surface" of the "curved surface at the bottom of the chute", the burden can "slide" throughout the process on the chute, so that the trajectory of the burden can be kept unchanged and the charging law can be kept unchanged; therefore, as long as the chute is not worn through, basically there will be no problem that the charging law is disrupted due to different burden trajectories between the new chute and the old chute, affecting the stable operation of the blast furnace; therefore, it is very beneficial to maintain the stable burden distribution of the blast furnace, very beneficial to the stable production of the blast furnace, and very beneficial to improving the economic benefits of the blast furnace.

[0019] 5. By the method of laying wear-resistant ceramic block layers along the steel shell in the chute, the present invention can form a complete smooth surface inside the chute. Utilizing this smooth surface is not only very beneficial for the sliding of the burden and reducing the wear of the chute, but also conducive to maintaining the unchanged trajectory of the material chute and the unchanged distribution law.

[0020] 6. The wear-resistant ceramic blocks used in this chute are recognized in the industry and are wear-resistant materials that can be used in a certain temperature environment. Therefore, they are very suitable for use in the temperature environment of the blast furnace top. Moreover, there are many varieties of ceramic blocks, and the thickness of the laid wear-resistant ceramic block layer can be completely selected according to the wear resistance requirements, and the construction is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. Figure 1 is a schematic axial longitudinal section view of the "novel blast furnace burden distribution chute" of the present invention and is also a common drawing for the following three implementation forms; FIG. Figure 2 is the first implementation form of the present invention, that is, the lower half of the view in the direction A in FIG. Figure 1 which is a schematic view capable of showing that the radial bottom of the chute is semi-circular; FIG. Figure 3 is the second implementation form of the present invention, that is, the lower half of the view in the direction A in FIG. Figure 1 which is a schematic view capable of showing that the bottom of the chute is a flat right angle; FIG. Figure 4 is the third implementation form of the present invention, that is, the lower half of the view in the direction A in FIG. Figure 1 which is a schematic view capable of showing that the bottom surface of the chute is arc-shaped.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS: In the figure, 1. bottom steel shell of the chute, 1.1. curved surface section, 1.2. upper straight section (also including the inner contour of the wear-resistant ceramic block layer), 1.3. lower straight section (also including the inner contour of the wear-resistant ceramic block layer), 2. side steel shell, 3. suspension system, 4. upper end plate, 5. lower end plate, 6. wear-resistant ceramic block layer, 7. hypotenuse, 8. inner curved surface of the bottom of the chute, 9. inner contour of the semi-circular bottom of the chute, 10. falling burden, 11. starting position of the curved surface, 12. inner contour of the original configured chute (the area contained in the indicated double-dotted line), 13. position of the material dropping point of the inner contour of the original configured chute, 14. extension line of the bottom lower opening of the inner contour of the original configured chute, 15. inner contour of the flat right angle type bottom of the chute, 16. inner contour of the bottom of the chute with an arc-shaped bottom surface.

[0023] Explanation of the parts that are not obvious or not specifically reflected in the attached drawings: 1. Since the attached drawings are schematic diagrams, the masonry patterns and layout of the wear-resistant ceramic block layer on the inner side of the chute are not reflected in the drawings. Only the masonry conditions of the bottom of the chute are shown through the cross-section of the chute bottom, and then expressed in conjunction with the text description; 2. In order to reflect the integrity of the "bottom steel shell of the chute", the markings of the "curved section, upper straight section, and lower straight section" are pointed to the "thin solid line with a two-way arrow" to indicate the section referred to; 3. Since the chute needs to be specifically designed according to the specific conditions of the specific furnace and the specific chute, the attached drawings do not involve dimensional issues such as the angle and length of the chute. It is only pointed out in the text description that "the hypotenuse is the reference side"; 4. Since there are many forms of the "suspension system" of the blast furnace distribution chute, it is impossible to show them one by one, so only one is selected for illustration; 5. Due to the attached Figure 1 The A-axis view is mainly used to show the radial shape of the bottom of the chute viewed from the axial direction. Figure 2 , 3 , 4. Only the lower half is drawn, and the upper half is omitted; this is hereby noted. DETAILED DESCRIPTION

[0024] With reference to the accompanying drawings of the specification and in combination with specific embodiments, the "a novel blast furnace material distribution chute" of the present invention is described in detail below.

[0025] Before the explanation, the following explanation is made on the "shape words, orientation words" and component names with "shape words, orientation words" used in this explanation and the previous description: This explanation includes the "lower half, upper half, curved surface, beveled edge, contour, semicircle, flat bottom right angle, arc, bottom surface, starting part of curved surface, dropping point, curved surface section, upper straight section, lower straight section, upper end plate, lower end plate, upper mouth, lower mouth, smooth transition, lower end, upper end, bottom, middle section, top, bottom" etc. used in the previous description, which are all expressions adopted with reference to the shapes and orientations seen in the accompanying drawings, and are only used to express the shapes, orientations and their mutual relationships of the components in the drawings, and are only used for identification and ease of review, and do not represent the specific shape or necessary modeling or necessary installation position and connection method of specific components, nor are they limitations on the shape, structure and function of specific components; this is hereby explained.

[0026] Due to the attached Figure 1 It is a common figure of the three embodiments, and therefore, this explanation starts from the common content of the three embodiments.

[0027] The common contents are as follows: 1. The described new blast furnace burden distributing chute has three embodiments, all of which are designed and manufactured by utilizing the principle of the "brachistochrone (cycloid)" and drawing on the successful cases of "U-shaped pools or U-shaped grooves" being used in sports events. The chute mainly consists of a side steel shell (2), a bottom steel shell (1), a bottom inner curved surface (8), a "lower straight section", an upper end plate (4), and a lower end plate (5). The suspension system (3) is integrated with the side steel shell (2). The wear-resistant porcelain block layer (6) is laid by masonry. The bottom inner curved surface (8) is located at the bottom part of the chute opposite to the inclined side (7) of the opening side in the length direction of the side steel shell (2) of the chute. There is an upper straight section above the bottom inner curved surface (8) and a lower straight section below the bottom inner curved surface (8).

[0028] 2. The new blast furnace burden distributing chute with a bottom inner curved surface (8) can enable the "falling burden" (10) to fall into the starting part (11) of the middle curved surface of the bottom inner curved surface (8) along the tangent direction, thereby using the bottom inner curved surface (8) to convert the impact force during the fall of the burden into sliding along the curved surface, reducing the impact force of the burden on the chute and reducing the wear on the chute. At the same time, it can avoid the "bouncing or splashing" of the burden when it falls onto the chute. Since a "lower straight section" with a relatively small slope is provided below the bottom inner curved surface (8) of the chute, the burden can be quickly decelerated when it slides from the bottom inner curved surface (8) into the "lower straight section", thus avoiding the excessive speed of the burden rushing out.

[0029] 3. For the three embodiments of this application, taking the lower end of the inclined side (7) of the opening side in the length direction of the side steel shell (2) of the chute as the starting point, taking the point two-thirds of the distance from this starting point upward to the original configured blanking point (13) inside the chute contour as the center of the circle, and taking the distance from the above starting point upward to the above center of the circle as the radius, an arc is drawn on the opposite side of the inclined side (7) to form the bottom inner curved surface (8). An additional wear-resistant porcelain block layer (6) and a bottom steel shell (1) are added outward from the bottom inner curved surface (8). According to the description of the bottom steel shell (1), the middle section is a curved surface section (1.1), the curved surface section (1.1) is connected upward to the upper straight section (1.2), and the curved surface section (1.1) is connected downward to the lower straight section (1.3). The specific connection method is as follows: the upper end of the curved surface section (1.1) is connected to the lower end of the upper straight section (1.2) in a tangent manner and achieves a smooth transition. The upper end of the upper straight section (1.2) is positioned through the bottom position of the upper opening of the original configured chute contour (12) and is connected and fixed to the side steel shell (2). The lower end of the curved surface section (1.1) is connected to the upper end of the lower straight section (1.3) in a tangent manner and achieves a smooth transition. The lower end of the lower straight section (1.3) is positioned through the extension line of the bottom of the lower opening of the original configured chute contour (12) and is connected and fixed to the side steel shell (2).

[0030] 4. The bottom steel shell (1) of the chute can be integrally manufactured, or the lower straight section (1.3), the curved section (1.1), and the upper straight section (1.2) can be manufactured separately and then combined by welding.

[0031] 5. The two side steel shells (2) can be integrally formed with two sets of suspension systems (3) respectively; the two side steel shells (2) with suspension systems (3) are welded to both sides of the bottom steel shell (1) respectively; the upper end plate (4) and the lower end plate (5) can also be combined with the side steel shell (2) and the bottom steel shell (1) by welding.

[0032] 6. The whole set of chute steel structure of two side steel shells (2) + bottom steel shell (1) + upper end plate (4) + lower end plate (5) containing the suspension system (3) can be integrally manufactured by casting.

[0033] Differences in the three embodiments: 1. Attached Figure 2 is the first implementation form of the A - view in the attachment, that is, the first embodiment; the inner contour of the radial bottom of this embodiment is semi - circular; therefore, the upper end plate (4) and the lower end plate (5) are also respectively designed and manufactured to be semi - circular at the lower part; and the bottom steel shell (1) also needs to be designed and manufactured according to the attachment Figure 1 and in combination with the attachment Figure 2 and the radial bottom is designed and manufactured to be semi - circular radially. Figure 1

[0034] 2. Attached Figure 3 Attached Figure 1 is the second implementation form of the A - view in the attachment, that is, the second embodiment; the inner contour of the radial bottom of this embodiment is flat - bottomed right - angled; its upper end plate (4) and lower end plate (5) also need to be designed and manufactured to be flat - bottomed right - angled, that is, in a shape similar to a "concave" character.

[0035] 3. Attached Figure 4 Attached Figure 1 is the third implementation form of the A - view in the attachment, that is, the third embodiment; the inner contour of the bottom of the radial bottom of this embodiment is arc - shaped; its upper end plate (4) and lower end plate (5) also need to be designed and manufactured to have an "arc - shaped" bottom; and the bottom steel shell (1) also needs to be designed and manufactured according to the attachment Figure 4 and in combination with the attachment Figure 1 and the bottom of the radial bottom is designed and manufactured to be "arc - shaped".

[0036] The above detailed description is an elaboration of the preferred specific embodiments of the present invention. Therefore, those that adopt the present invention and have a "curved surface" or "arc surface" provided at the bottom of the chute shown in the axial longitudinal section opposite to the "hypotenuse of the opening side of the chute"; those where the material dropping point is within the range of its "curved surface" or "arc surface"; and those that design the "curved surface" or "arc surface" of the chute bottom according to the method of the present invention, regardless of the material used for manufacturing, regardless of what kind of wear-resistant material is used, and regardless of what kind of composition method is adopted, all fall within the protection scope of the present invention; and those that many other modifications and variations are conceived by those of ordinary skill in the art without creative efforts based on the present invention, or those that are technical solutions obtained by those skilled in the art through certain technical means on the basis of the concept of the present invention, also fall within the protection scope determined by the present invention.

Claims

1. A new type of blast furnace burden distribution chute, characterized in that: The described new-type blast furnace burden distributing chute mainly consists of a suspension system, a side steel shell, a bottom steel shell, an inner curved surface at the bottom, a lower straight section, an upper end plate, a lower end plate, and a wear-resistant porcelain block layer; the suspension system is integrally made with the side steel shell: the inner curved surface at the bottom is located at the bottom part of the chute opposite to the hypotenuse of the opening side in the length direction of the side steel shell of the chute, and the lower straight section is below the inner curved surface at the bottom; the wear-resistant porcelain block layer is laid in a masonry manner; the new-type blast furnace burden distributing chute takes the hypotenuse of the opening side in the length direction of the side steel shell as the reference, takes the lower end of the hypotenuse as the starting point, takes the 2 / 3 position between the starting point and the original configured chute inner contour material dropping point as the center of the circle, and takes the distance from the starting point to the center of the circle as the radius to draw an arc on the opposite side of the hypotenuse, and takes this arc as the inner curved surface at the bottom. The outside of the inner curved surface at the bottom is the wear-resistant porcelain block layer and the bottom steel shell; when the falling burden falls into the starting part of the curved surface of the inner curved surface at the bottom along the tangent direction, the impact force when the burden descends can be converted into sliding along the inner curved surface by using the inner curved surface at the bottom, so as to reduce the impact force of the burden on the chute and reduce the wear on the chute. At the same time, it can avoid the bouncing or splashing of the burden when it falls onto the chute; because the inner curved surface at the bottom has a lower straight section with a smaller slope downward, when the burden slides from the inner curved surface at the bottom into the lower straight section, it can be quickly decelerated, thus avoiding the too fast impact speed of the burden.

2. The novel blast furnace burden distributing chute according to claim 1, characterized in that: Its bottom steel shell is divided into three sections. The middle section is a curved surface section. The curved surface section is upward as the upper straight section and downward as the lower straight section; the upper end of the curved surface section is connected to the lower end of the upper straight section in a tangent manner and smoothly transitions. The upper end of the upper straight section is positioned through the bottom position of the upper opening of the original configured chute inner contour and is connected and fixed to the side steel shell; the lower end of the curved surface section is connected to the upper end of the lower straight section in a tangent manner and smoothly transitions. The lower end of the lower straight section is positioned through the extension line of the bottom of the lower opening of the original configured chute inner contour and is connected and fixed to the side steel shell.

3. A novel blast furnace burden distributing chute according to claim 1, characterized in that: The described bottom steel shell can be integrally manufactured, or the lower straight section, the curved surface section, and the upper straight section can be separately manufactured and then welded and combined.

4. A novel blast furnace burden distributing chute according to claim 1, characterized in that: Both sides of the bottom steel shell are welded and combined with a set of side steel shell + suspension system respectively; its upper end plate and lower end plate are also combined with the side steel shell and the bottom steel shell by welding.

5. A novel blast furnace burden distribution chute according to claim 1, characterized in that: The whole set of chute steel structure containing two sets of side steel shell + suspension system, as well as the bottom steel shell, the upper end plate, and the lower end plate, can also be integrally manufactured by casting.

6. A novel blast furnace burden distributing chute according to claim 1, characterized in that: The radial bottom inner contour of the chute together with the upper end plate and the lower end plate can be designed and manufactured into a semi-circular shape.

7. A novel blast furnace burden distributing chute according to claim 1, characterized in that: The radial bottom inner contour of the chute together with the upper end plate and the lower end plate can be designed and manufactured into a flat-bottom right-angled shape.

8. A novel blast furnace burden distribution chute according to claim 1, characterized in that: The radial bottom inner contour of the chute together with the upper end plate and the lower end plate can be designed and manufactured with an arc-shaped bottom.

9. The novel burden distributing chute of blast furnace according to claim 1, wherein: After the above steel structure parts are combined or cast, on the premise of ensuring the installation accuracy of the suspension system, the wear-resistant porcelain block layer is laid, and the thickness of the wear-resistant porcelain block layer can be selected according to the design life of the chute.

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