A mixing and batching tank and device

Abstract

The present invention relates to a mixing and batching trough and device, and belongs to the technical field of raw material processing in iron and steel metallurgy. The mixing and batching trough comprises a large trough and a small trough, and the large trough and the small trough respectively comprise a large trough body and a small trough body which are circumferentially enclosed and vertically arranged; the upper end of the large trough body is a large trough inlet, and the lower end is a large trough outlet which is smaller than the large trough inlet; the upper end of the small trough body is a small trough inlet, and the lower end is a small trough outlet which is smaller than the small trough inlet; the large trough and the small trough are arranged in sequence, and the large trough inlet and the small trough inlet are on the same horizontal trough surface and each occupies a trough surface span unit; the contour of the small trough outlet is circular, and the contour of the small trough inlet is a closed curve and approaches the maximum range of the trough surface span unit, and the inner wall of the small trough body is a continuous and smooth curved surface. Without raising the trough surface height, by optimizing the shape of the small trough, the problems of material blockage, material accumulation, material suspension, and material sticking existing in the low-ratio raw materials in the mixed ore can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of iron and steel metallurgical raw material processing and relates to a mixing and batching tank and a device. Background Art

[0002] Mixing, as an important link in raw material processing in the field of steel metallurgy, has extremely important technological and economic value. Through mixing, the following functions can be achieved:

[0003] (1) One or more raw materials with different physical and chemical properties can be mixed into a mixed ore with uniform physical and chemical properties after mixing, thereby simplifying the production process and operation of the user's workshop, improving technical performance indicators, and obtaining the best economic benefits.

[0004] (2) By controlling and adjusting the chemical composition of the raw materials delivered to the user's workshop before mixing, the chemical composition of the raw materials can be controlled and adjusted to reach the expected value.

[0005] (3) It can reduce the fluctuation of physical properties and chemical composition of various raw materials.

[0006] (4) Certain raw materials with a taste lower than the industrial standard can be utilized through mixing, thereby achieving comprehensive economic benefits.

[0007] Mixing batching and mixing material field are two important links in the mixing process, which directly determine the quality of mixed ore. Among them, the process layout and structural design of the mixing batching tank are the top priority in the mixing batching process. Whether it is the iron-containing batching method or the full-material batching method, a certain number of mixing batching tanks need to be set up to achieve the purpose of mixing. In order to make rational use of the batching tanks, the current layout of the mixing batching tanks mostly follows the principle that high-ratio raw materials such as iron ore powder use large mixing batching tanks, and low-ratio raw materials such as "sticky" in-plant recycled materials such as oxidized iron scale, blast furnace ash, converter coarse particles, and steel slag use small mixing batching tanks.

[0008] In the traditional large trough body, the straight section where the large trough entrance is located is cylindrical, and the conical section where the large trough outlet is located is conical; in the small trough body, the straight section where the small trough entrance is located is rectangular, and the conical section where the small trough outlet is located is prism-shaped. In actual production, many "sticky" recycled materials in the factory, such as oxidized iron scale, blast furnace ash, converter coarse particles, steel slag, etc., due to their various types, large differences in physical and chemical properties between materials, small particle size, and high moisture content, often have problems such as blockage, accumulation, suspension, and sticking when they enter the mixing and batching tank to participate in the mixing and batching of mixed ore, which seriously affects the stacking operation of the mixed ore and makes it impossible to fully reuse these precious recycled materials in the factory. Although some steel companies adopt the mode of roughly mixing or blending these recycled materials and then adding them to the mixing and batching tank, since the rough mixing or blending is mostly done by loaders combined with trucks, the rough mixing efficiency is extremely low, the labor intensity of workers is high, and the working environment is very harsh, which not only increases the cost of ore blending, but also limits the utilization rate of recycled materials. Therefore, how to solve the problems of sticking, clogging, and wall adhesion in the process of recycled materials being mixed and blended has become the key to improving the utilization rate of recycled materials and reducing the cost of blending. Summary of the invention

[0009] In view of this, the purpose of the present invention is to provide a mixing and batching trough and device, which, without raising the trough surface height, solves the problems of blockage, accumulation, suspension, and stickiness of low-proportion raw materials such as "sticky" in-plant recycled materials such as iron oxide scale, blast furnace ash, converter coarse particles, and steel slag in the mixed ore by optimizing the shape of the small trough inlet, the small trough outlet, and the small trough body.

[0010] In order to achieve the above object, the present invention provides the following technical solutions:

[0011] A mixing and batching trough comprises a large trough and a small trough, wherein the large trough and the small trough respectively comprise a large trough body and a small trough body which are circumferentially enclosed and vertically arranged; the upper end of the large trough body is a large trough inlet, and the lower end is a large trough outlet which is smaller than the large trough inlet; the upper end of the small trough body is a small trough inlet, and the lower end is a small trough outlet which is smaller than the small trough inlet; the large trough and the small trough are arranged in sequence, the large trough inlet and the small trough inlet are located on the same horizontal trough surface and each occupies a trough surface span unit; the contour of the small trough outlet is a circle, the contour of the small trough inlet is a closed curve and approaches the maximum range of the trough surface span unit, and the inner wall of the small trough body is a continuous and smooth curved surface.

[0012] Furthermore, the profile of the small groove entrance is elliptical or quasi-elliptical.

[0013] Furthermore, the contours of the large trough inlet and the large trough outlet are both circular.

[0014] Furthermore, a smooth and wear-resistant lining plate is provided around the inner periphery of the small groove body to form a continuous, smooth and wear-resistant inner wall.

[0015] Furthermore, the lining plate is a lining plate made of rolled microcrystalline material.

[0016] Furthermore, there is at least one large slot.

[0017] Furthermore, there is at least one small slot.

[0018] A mixing and batching device comprises the mixing and batching trough as described above, a discharge device arranged above the mixing and batching trough and a discharge device arranged below the mixing and batching trough.

[0019] Furthermore, at least one unloading device is provided corresponding to the small trough entrance.

[0020] Furthermore, the discharging device is a disc feeder.

[0021] The beneficial effects of the present invention are:

[0022] (1) The contour of the small trough entrance of the present invention can be an ellipse, a quasi-ellipse or other curved shapes. In the trough surface span unit where the corresponding small trough is located, the contour of the small trough entrance approaches the maximum range of the trough surface span unit, so that the small trough entrance becomes as large as possible and the trough surface space is effectively utilized to the maximum extent. Compared with the traditional square small trough entrance, at the same trough body height, the effective volume of the small trough is greatly improved, and the project investment is reduced. In addition, more unloading equipment for unloading into the small trough can be arranged and the unloading point can be optimized to improve the unloading efficiency and the effective utilization rate of the internal space of the small trough.

[0023] (2) The special small trough structure of the present invention can increase the angle between the extension line extending from the small trough inlet to the small trough outlet on the small trough body and the horizontal trough surface without increasing the trough surface height and occupying the trough surface span unit where the large trough is located, and has a stronger adaptability to "sticky" recycled materials, thereby avoiding blockage, accumulation, suspension or adhesion of materials and reducing engineering investment.

[0024] (3) The small trough body of the present invention can be combined with the material stacking angle and the shape of the small trough inlet. By adjusting the diameter of the circle of the small trough outlet, the most unfavorable angle of the small trough body can be made larger than the material stacking angle, thereby avoiding material blockage or hanging material, and allowing more "sticky" recycled materials in the factory to directly enter the trough for mixing and addition.

[0025] (4) The inner wall of the small trough body of the present invention is a continuous and smooth curved surface, which avoids the defects of easy blockage, accumulation, hanging or adhesion of materials at the intersection between two adjacent inner walls of the traditional prism-shaped trough body.

[0026] (5) The contour of the small slot outlet in the present invention is circular, which is compatible with the shape of the turntable of the disc feeder below the small slot outlet, thereby avoiding the phenomenon of material dead zones and dead corners between the original square small slot outlet and the disc feeder.

[0027] (6) The present invention solves the problems of clogging, accumulation, hanging and sticking of "sticky" recycled materials by optimizing the shape of the small trough inlet, the small trough outlet and the small trough body without increasing the trough surface height. It not only saves the civil engineering cost of raising the trough surface as a whole, but also greatly improves the proportion of "sticky" recycled materials in the factory, so that the "sticky" recycled materials can be directly put into the trough to participate in the mixing and adding process without pre-mixing or stirring, thereby reducing the investment cost of recycled material utilization, and the working environment of workers and the surrounding environment are also greatly improved, which has extremely high economic value and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention provides the following drawings for illustration:

[0029] Figure 1 It is a schematic diagram of the plane layout of the present invention;

[0030] Figure 2 It is a schematic diagram of the cross-section arrangement of the present invention.

[0031] Figure numerals: small trough inlet 1, small trough outlet 2, large trough outlet 3, large trough inlet 4, unloading equipment 5, small trough body 6, lining plate 7, discharge equipment 8. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 and Figure 2 As shown, a mixing and batching trough comprises a large trough and a small trough, wherein the large trough and the small trough respectively comprise a large trough body and a small trough body 6 which are circumferentially enclosed and vertically arranged; the upper end of the large trough body is a large trough inlet 4, and the lower end is a large trough outlet 3 which is smaller than the large trough inlet 4; the upper end of the small trough body 6 is a small trough inlet 1, and the lower end is a small trough outlet 2 which is smaller than the small trough inlet 1; the large trough and the small trough are arranged in sequence, the large trough inlet 4 and the small trough inlet 1 are on the same horizontal trough surface and each occupies a trough surface span unit; the outline of the small trough outlet 2 is a circle, the outline of the small trough inlet 1 is a closed curve and approaches the maximum range of the trough surface span unit, and the inner wall of the small trough body 6 is a continuous and smooth curved surface.

[0034] Specifically, there are two large grooves, and the contours of the large groove entrance 4 and the large groove exit 3 are both circular. There are three small grooves, and the contour of the small groove entrance 1 is elliptical. In other embodiments, the contour of the small groove entrance 1 can also be elliptical or other curved shapes, not limited to the shapes shown, with the principle of maximizing the use of the groove surface span unit where the small groove is located. Within the groove surface span unit where the corresponding small groove is located, the contour of the small groove entrance 1 approaches the maximum range of the groove surface span unit, so that the small groove entrance 1 becomes as large as possible, maximizing the effective use of the groove surface space; compared with the traditional square small groove entrance 1, at the same height of the small groove body 6, the effective volume of the small groove is greatly improved, reducing the engineering investment.

[0035] In this embodiment, a smooth and wear-resistant lining plate 7 is provided inside the small groove body 6 to form a continuous, smooth and wear-resistant inner wall. The lining plate 7 can be selected from rolled microcrystalline or similar materials in combination with the material properties. The inner wall of the small groove body 6 is a continuous and smooth curved surface, which avoids the defects of easy blockage, accumulation, suspension or adhesion of materials at the intersection between two adjacent inner walls of the traditional prism-shaped trough body.

[0036] In this embodiment, the small trough body 6 can be combined with the stacking angle of the material and the shape of the small trough inlet 1. By adjusting the diameter of the circle of the small trough outlet 2, the most unfavorable angle of the small trough body 6 can be achieved to be greater than the material stacking angle, thereby avoiding blockage or hanging material and allowing more "sticky" recycled materials in the factory to directly enter the trough for mixing and addition.

[0037] Due to the special small trough structure, the angle between the extension line from the small trough inlet 1 to the small trough outlet 2 on the small trough body 6 and the horizontal trough surface can be increased without increasing the trough surface height and occupying the trough surface span unit where the large trough is located, which makes it more adaptable to "sticky" recycled materials, thereby avoiding blockage, accumulation, suspension or adhesion of materials and reducing project investment.

[0038] like Figure 1 and Figure 2 As shown, a mixing and batching device includes the above mixing and batching trough, a discharge device 5 arranged above the mixing and batching trough, and a discharge device 8 arranged below the mixing and batching trough.

[0039] Three unloading devices 5 are provided corresponding to the small trough entrance 1. Since the elliptical small trough entrance 1 in this embodiment is larger than the traditional square small trough entrance 1, more unloading devices 5 for unloading into the small trough can be arranged corresponding to the small trough entrance 1 and the unloading point can be optimized to improve the unloading efficiency and the effective utilization of the internal space of the small trough.

[0040] The discharge device 8 is a disc feeder. In this embodiment, the small slot outlet 2 has a circular outline, which matches the shape of the turntable of the disc feeder below the small slot outlet 2, thereby avoiding the phenomenon of material dead zones and dead angles between the original square small slot outlet 2 and the disc feeder.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A mixing and batching tank, characterized in that: The invention comprises a large groove and a small groove, wherein the large groove and the small groove respectively comprise a large groove body and a small groove body which are circumferentially enclosed and vertically arranged; the upper end of the large groove body is a large groove entrance, and the lower end is a large groove exit which is smaller than the large groove entrance; the upper end of the small groove body is a small groove entrance, and the lower end is a small groove exit which is smaller than the small groove entrance; the large groove and the small groove are arranged in sequence, and the large groove entrance and the small groove entrance are located on the same horizontal groove surface and each occupies a groove surface span unit; the outline of the small groove exit is a circle, the outline of the small groove entrance is a closed curve and approaches the maximum range of the groove surface span unit, and the inner wall of the small groove body is a continuous and smooth curved surface; The outline of the small slot inlet is elliptical or quasi-elliptical, and the outlines of the large slot inlet and the large slot outlet are both circular.

2. The mixing and batching tank according to claim 1, characterized in that: A smooth and wear-resistant lining plate is provided inside the small groove body to form a continuous, smooth and wear-resistant inner wall.

3. The mixing and batching tank according to claim 2, characterized in that: The lining plate is a lining plate made of calendered microcrystalline material.

4. The mixing and batching tank according to claim 1, characterized in that: There is at least one large groove.

5. The mixing and batching tank according to claim 1, characterized in that: There is at least one small groove.

6. A mixing and batching device, characterized in that: The invention comprises the mixing and batching trough as claimed in claims 1 to 5, a discharging device arranged above the mixing and batching trough and a discharging device arranged below the mixing and batching trough.

7. The mixing and batching device according to claim 6, characterized in that: At least one unloading device is provided corresponding to the small trough entrance.

8. The mixing and batching device according to claim 6, characterized in that: The discharging device is a disc feeder.

Images