Drying device for steel slag raw material in metallurgical sintering synergist

Abstract

The utility model discloses a drying device for a steel slag raw material in a metallurgical sintering synergist, which comprises a shell, a feed hopper positioned at the upper end of the shell, a discharge pipe positioned at the lower end of the shell, an airflow circulation part, a heater, a first fan and a second fan. The steel slag drying device has the advantages that the airflow circulation part is arranged in steel slag raw materials, so that airflow can flow conveniently, the drying efficiency of the steel slag raw materials is improved, and energy is saved; the transverse pipe is not provided with a through hole, so that the collection of airflow of the vertically arranged ventilation pipe is facilitated; the length of the breather pipe is sequentially shortened in the horizontal direction from the second fan to the first fan, so that a certain space can be formed in the shell close to the heater, hot air can be conveniently dispersed, and the hot air is prevented from being pumped away by the transverse pipe after entering; the ventilation holes effectively improve flowing of hot air.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, and in particular to a drying device for steel slag raw materials in metallurgical sintering enhancers. Background Technology

[0002] Metallurgical sintering enhancer is a composite functional additive that improves the strength of sintered ore and reduces solid fuel consumption by optimizing the sintering reaction process, improving the permeability of the material layer and the mineral phase structure.

[0003] Metallurgical sintering synergists use steel slag as raw material. Steel slag must be dried before it is prepared. The main reason is that when steel slag is stored in an open-air yard for a long time, its porous structure (including capillary pores and cracks) will absorb rainwater or moisture from the air, and the moisture content is usually 5% to 15%. This will affect the stability of subsequent processes and the performance of the synergist.

[0004] However, in existing steel slag drying equipment, the steel slag is stacked with small gaps, and the hot air is usually introduced into the drying chamber through a single pipe. As a result, the hot air cannot evenly dry the stacked steel slag in the drying chamber. Steel slag that is far from the hot air inlet pipe takes a long time to be fully dried, which is not conducive to energy conservation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a drying device for steel slag raw materials in metallurgical sintering enhancers.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A drying device for steel slag raw materials in a metallurgical sintering enhancer includes a shell, a feed hopper at the upper end of the shell, and a discharge pipe at the lower end of the shell. It also includes an airflow circulation section, a heater, a first fan, and a second fan. The heater is connected to the lower end of the shell via a pipe. The first fan is connected to the end of the heater away from the shell via a pipe. The airflow circulation section is located inside the shell, with its upper end extending from the upper side of the shell opposite to the heater location and communicating with the second fan. The airflow circulation section includes a horizontal pipe at the upper part of the shell and several vent pipes connected to the horizontal pipe. The length of the vent pipes decreases sequentially along the horizontal direction from the second fan to the first fan. Each vent pipe has several vent holes.

[0008] Furthermore, the lower ends of several of the ventilation tubes are located on the same oblique line; the oblique line is at an angle of 30° to 40° with the horizontal plane.

[0009] Furthermore, the oblique line is at a 35° angle to the horizontal plane.

[0010] Furthermore, a baffle plate is horizontally provided on the feed hopper; a first valve is provided on the discharge pipe.

[0011] Furthermore, a second valve is provided on the pipe between the heater and the housing; a third valve is provided on the horizontal pipe between the housing and the second fan; a third fan is connected to the pipe between the third valve and the housing via a branch pipe; and a fourth valve is provided between the third fan and the horizontal pipe.

[0012] Furthermore, several fixing rods are fixedly connected to the middle of the plurality of ventilation pipes; the fixing rods are also fixedly connected to the inner wall of the housing.

[0013] The beneficial effects of this utility model are:

[0014] By incorporating an airflow circulation section within the steel slag raw material, the airflow can be facilitated, accelerating the drying efficiency of the steel slag raw material and saving energy. The absence of through holes on the horizontal pipe facilitates the collection of airflow from the vertically installed ventilation pipe. The ventilation pipe, with its length decreasing sequentially from the second fan to the first fan in the horizontal direction, creates a certain space in the shell near the heater, allowing hot air to disperse and preventing it from being drawn away by the horizontal pipe immediately after entering. The ventilation holes effectively improve the flow of hot air. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0017] In the picture,

[0018] 1-Shell, 2-Feed hopper, 3-Discharge pipe, 4-Airflow circulation section, 5-Heater, 6-First blower, 7-Second blower, 8-Third blower;

[0019] 21-Baffle plate;

[0020] 31-First valve;

[0021] 41-Horizontal tube, 42-Ventilation tube, 43-Fixing rod;

[0022] 51-Second valve;

[0023] 71-Third valve;

[0024] 81 - Fourth valve. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Reference Figure 1-2 As shown, a drying device for steel slag raw materials in a metallurgical sintering enhancer includes a shell 1, a feed hopper 2 located at the upper end of the shell 1, and a discharge pipe 3 located at the lower end of the shell 1. It also includes an airflow circulation section 4, a heater 5, a first fan 6, and a second fan 7. The heater 5 is connected to the lower end of the shell 1 through a pipe. The end of the heater 5 away from the shell 1 is connected to the first fan 6 through a pipe. The airflow circulation section 4 is located inside the shell 1, and its upper end extends from the upper end of the shell 1 on the opposite side of the heater 5 and is connected to the second fan 7. The airflow circulation section 4 includes a horizontal pipe 41 located at the upper part of the shell 1 and several vent pipes 42 connected to the horizontal pipe 41. The length of the vent pipes 42 decreases sequentially along the horizontal direction from the second fan 7 to the first fan 6. Several vent holes 421 are opened on each vent pipe 42.

[0027] It should be noted that the shell 1 is the main space for drying steel slag raw materials; the feed hopper 2 facilitates the entry of raw materials; the discharge pipe 3 can be used for the outflow of dried raw materials; the airflow circulation section 4 is located in the steel slag raw materials, which can facilitate the flow of airflow, accelerate the drying efficiency of steel slag raw materials, and save energy; the horizontal pipe 41 does not have through holes, which can facilitate the collection of airflow from the vertically set vent pipe 42; the length of the vent pipe 42 gradually decreases along the horizontal direction from the second fan 7 to the first fan 6, which can form a certain space in the shell 1 near the heater 5 to facilitate the dissipation of hot air and prevent the hot air from being drawn away by the horizontal pipe 41 after entering; the vent hole 421 effectively improves the flow of hot air; the first fan 6 can improve the airflow efficiency, and the second fan 7 plays an auxiliary role.

[0028] To facilitate the fabrication and cutting of the ventilation pipes 42, the lower ends of several ventilation pipes 42 are located on the same oblique line; the oblique line is at an angle of 30° to 40° with the horizontal plane. In this application, the oblique line is at an angle of 35° with the horizontal plane, which can better ensure drying efficiency.

[0029] To facilitate control of feeding and discharging, a baffle plate 21 is horizontally installed on the feeding hopper 2; a first valve 31 is installed on the discharging pipe 3.

[0030] Specifically, a second valve 51 is provided on the pipe between the heater 5 and the housing 1; a third valve 71 is provided on the horizontal pipe 41 between the housing 1 and the second fan 7; a third fan 8 is connected to the pipe between the third valve 71 and the housing via a branch pipe; and a fourth valve 81 is provided between the third fan 8 and the horizontal pipe 41. The second valve 51 facilitates the control of hot air; the third valve 71, the third fan 8, and the fourth valve 81 work together to backflush the pipe and remove debris from the vent hole 421.

[0031] To prevent the steel slag material from bending the vent pipe 42, several fixing rods 43 are fixedly connected to the middle of several vent pipes 42; the fixing rods 43 are also fixedly connected to the inner wall of the shell 1.

[0032] The working principle of this utility model:

[0033] During operation, the airflow circulation section 4, located within the steel slag raw material, facilitates airflow, accelerates the drying efficiency of the steel slag raw material, and saves energy. The horizontal pipe 41 does not have through holes, which facilitates the collection of airflow from the vertically installed vent pipe 42. The length of the vent pipe 42 gradually decreases along the horizontal direction from the second fan 7 to the first fan 6, creating a certain space in the shell 1 near the heater 5 to facilitate the dissipation of hot air and prevent the hot air from being drawn away by the horizontal pipe 41 after entering. The vent hole 421 effectively improves the flow of hot air. The first fan 6 improves airflow efficiency, while the second fan 7 plays an auxiliary role.

[0034] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A drying device for steel slag raw materials in a metallurgical sintering enhancer, comprising a shell (1), a feed hopper (2) located at the upper end of the shell (1), and a discharge pipe (3) located at the lower end of the shell (1), characterized in that: It also includes an airflow circulation section (4), a heater (5), a first fan (6), and a second fan (7); the heater (5) is connected to the lower end of the housing (1) through a pipe; the heater (5) is connected to the first fan (6) through a pipe at the end away from the housing (1); the airflow circulation section (4) is located inside the housing (1), and its upper end extends from the upper end of the housing (1) opposite to the location of the heater (5) and is connected to the second fan (7); the airflow circulation section (4) includes a horizontal pipe (41) located on the upper part of the housing (1) and several vent pipes (42) connected to the horizontal pipe (41); the length of the vent pipes (42) decreases sequentially along the horizontal direction from the second fan (7) to the first fan (6); several vent holes (421) are opened on each of the vent pipes (42).

2. The drying device for steel slag raw materials in the metallurgical sintering enhancer according to claim 1, characterized in that: The lower ends of several of the ventilation tubes (42) are located on the same oblique line; the oblique line is at an angle of 30° to 40° with the horizontal plane.

3. The drying device for steel slag raw material in the metallurgical sintering enhancer according to claim 2, characterized in that: The oblique line is at a 35° angle to the horizontal plane.

4. The drying device for steel slag raw materials in the metallurgical sintering enhancer according to any one of claims 1 to 3, characterized in that: The feed hopper (2) is horizontally equipped with a baffle plate (21); the discharge pipe (3) is equipped with a first valve (31).

5. The drying device for steel slag raw material in the metallurgical sintering enhancer according to claim 4, characterized in that: A second valve (51) is provided on the pipe between the heater (5) and the housing (1); a third valve (71) is provided on the horizontal pipe (41) between the housing (1) and the second fan (7); a third fan (8) is connected to the pipe between the third valve (71) and the housing through a branch pipe; a fourth valve (81) is provided between the third fan (8) and the horizontal pipe (41).

6. The drying device for steel slag raw material in the metallurgical sintering enhancer according to claim 4, characterized in that: Several fixing rods (43) are fixedly connected to the middle of the several ventilation pipes (42); the fixing rods (43) are also fixedly connected to the inner wall of the shell (1).

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