Feeding device for blast furnace granulated slag powder production

Abstract

The utility model relates to the technical field of slag powder production, and discloses a blast furnace granulated slag powder production feeding device which comprises a machine base, a round cavity is formed in the machine base, a feeding roller is arranged in the round cavity, a plurality of feeding grooves are formed in the outer side wall of the feeding roller, rotating shafts are fixedly installed at the two ends of the feeding roller, and the rotating shafts are arranged in the feeding grooves. And a heating cavity is formed in the feeding roller, an air inlet pipe coaxial with the rotating shafts is fixedly inserted into the cavity wall of the heating cavity, a sealing cover coaxial with the rotating shafts is fixedly installed on the side wall of the machine base, and the air inlet pipe is rotationally connected with the side wall of the sealing cover. According to the feeding device, the uniformity of single-time feeding can be improved as much as possible, too much or too little single-time feeding of grinding equipment is prevented, meanwhile, in the feeding process, the drying degree of slag can be synchronously maintained, and caking of ground slag powder is avoided as much as possible.

Description

Technical Field

[0001] The present application relates to the technical field of slag powder production, and in particular to a feeding device for producing granulated slag powder for a blast furnace. Background Art

[0002] Blast furnace granulated slag powder is a powder product obtained by finely grinding the water-quenched slag discharged from the iron-making blast furnace. The raw material of blast furnace granulated slag powder is formed by rapidly cooling the molten blast furnace slag in water.

[0003] At present, when forming slag, it is necessary to place the molten blast furnace slag in water, form slag through rapid cooling, and then grind the slag into powder to obtain slag powder. However, in the production process of slag powder, since the slag needs to be water-cooled, some water may remain on the surface of the slag before grinding. This residual water may cause the ground powder to agglomerate during the subsequent grinding process, affecting the grinding effect. If relevant sufficient drying equipment is specially added, the equipment investment will increase and the production efficiency will also be affected. Utility Model Content

[0004] The purpose of this application is to solve the problem in the prior art that due to the need for water cooling of slag, some water may remain on the surface of the slag before grinding. This residual water may cause the ground powder to agglomerate during subsequent grinding processing, affecting the grinding effect. If relevant sufficient drying equipment is specially added, the equipment investment will increase and the production efficiency will be affected. A feeding device for the production of blast furnace granulated slag powder is proposed.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] A feeding device for producing granulated slag powder in a blast furnace comprises a machine base, a circular cavity is provided inside the machine base, and a feeding roller is provided inside the circular cavity, and a plurality of feeding troughs are provided on the outer wall of the feeding roller, rotating shafts are fixedly installed at both ends of the feeding roller, and the two rotating shafts are rotatably connected to the circular cavity, a heating chamber is provided inside the feeding roller, and an air inlet pipe coaxial with the rotating shaft is fixedly inserted into the cavity wall of the heating chamber, a sealing cover coaxial with the rotating shaft is fixedly installed on the side wall of the machine base, and the air inlet pipe is rotatably connected to the side wall of the sealing cover, one of the rotating shaft and the feeding roller is jointly provided with an exhaust hole, and the heating chamber is connected to the sealing cover through two exhaust holes, a steam outlet pipe is fixedly inserted on the side wall of the sealing cover, a reduction motor is fixedly installed on the outer wall of the machine base, and the reduction motor is drivingly connected to the rotating shaft on the same side, the machine base is provided with a storage trough, and the storage trough is provided with a feeding channel connected to the circular cavity, and the side wall of the machine base is provided with a discharge channel connected to the circular cavity.

[0007] Preferably, a dust suction cavity is provided on the side wall of the base, and a plurality of dust suction holes connected with the circular cavity are provided in the dust suction cavity, a filter is fixedly installed inside the dust suction cavity, a suction pump is fixedly installed on the outer wall of the base, and the suction end of the suction pump is connected with the dust suction cavity.

[0008] Preferably, an output pipe is fixedly installed at the output end of the suction pump, a hollow frame plate is fixedly sleeved on the outer wall of the base, and a plurality of jet holes are opened on the inner wall of the hollow frame plate, and the hollow frame plate is connected to the output pipe.

[0009] Preferably, a heat conducting block is fixedly inserted into the bottom of each feeding trough.

[0010] Preferably, a discharge port is provided at the lower end of the dust suction chamber, and a sealing cover matching the discharge port is installed at the bottom of the machine base, and the sealing cover is detachably connected to the machine base.

[0011] Preferably, a high-temperature steam inlet pipe connected to the air inlet pipe is fixedly mounted on the side wall of the sealing cover.

[0012] Compared with the prior art, the present application provides a feeding device for producing granulated slag powder for blast furnace, which has the following beneficial effects:

[0013] 1. The feeding device for the production of granulated slag powder of blast furnace can improve the uniformity of single feeding as much as possible through the mutual cooperation of the machine base, circular cavity, feeding roller, rotating shaft, feeding trough, reduction motor, storage trough, feeding channel and discharging channel through the alternating feeding mode of multiple feeding troughs, so as to prevent excessive or insufficient single feeding to the grinding equipment.

[0014] 2. The feeding device for producing granulated slag powder of blast furnace can heat the slag materials in each feeding trough synchronously during the feeding process through the cooperation of the heating chamber, air inlet pipe, sealing cover, exhaust hole and steam outlet pipe, so as to evaporate the residual water as much as possible, maintain the dryness of slag and avoid agglomeration of ground slag powder as much as possible.

[0015] 3. The feeding device for producing granulated slag powder of blast furnace can timely extract evaporated water vapor through the cooperation of the dust suction chamber, filter screen and suction pump. At the same time, the dust in the slag can be extracted during the feeding process to reduce the amount of dust in the slag.

[0016] Moreover, the parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The present application can maximize the uniformity of single feeding and prevent excessive or insufficient single feeding to the grinding equipment. At the same time, the dryness of the slag can be maintained during the feeding process to minimize the agglomeration of the ground slag powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a feeding device for producing granulated slag powder for blast furnace proposed in this application;

[0018] Figure 2 This is a schematic diagram of the internal top view of the feeding roller of a feeding device for producing granulated slag powder for a blast furnace proposed in this application;

[0019] Figure 3 A feeding device for producing granulated slag powder for blast furnace proposed in this application Figure 2 A magnified view of the structure of part A.

[0020] In the figure: 1. machine base; 2. round cavity; 3. feeding roller; 4. feeding trough; 5. rotating shaft; 6. heating chamber; 7. air inlet pipe; 8. sealing cover; 9. exhaust hole; 10. steam outlet pipe; 11. reduction motor; 12. storage trough; 13. feeding channel; 14. discharging channel; 15. dust suction chamber; 16. filter screen; 17. suction pump; 18. output pipe; 19. hollow frame plate; 20. jet hole; 21. heat transfer block; 22. sealing cover; 23. high-temperature steam inlet pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0022] Reference Figure 1-3 A feeding device for producing granulated slag powder of blast furnace comprises a machine base 1, a circular cavity 2 is arranged inside the machine base 1, a feeding roller 3 is arranged inside the circular cavity 2, a plurality of feeding grooves 4 are arranged on the outer wall of the feeding roller 3, rotating shafts 5 are fixedly installed at both ends of the feeding roller 3, and the two rotating shafts 5 are rotatably connected to the circular cavity 2, a heating cavity 6 is arranged inside the feeding roller 3, and an air inlet pipe 7 coaxial with the rotating shaft 5 is fixedly inserted into the cavity wall of the heating cavity 6, a sealing cover 8 coaxial with the rotating shaft 5 is fixedly installed on the side wall of the machine base 1, and the air inlet pipe 7 is connected to the rotating shaft 5. The side wall of the sealing cover 8 is rotatably connected, one of the rotating shafts 5 and the feeding roller 3 is jointly provided with an exhaust hole 9, and the heating chamber 6 is connected with the sealing cover 8 through two exhaust holes 9, a steam outlet pipe 10 is fixedly inserted into the side wall of the sealing cover 8, a reduction motor 11 is fixedly installed on the outer wall of the machine base 1, and the reduction motor 11 is transmission-connected with the rotating shaft 5 on the same side, the machine base 1 is provided with a storage trough 12, and the storage trough 12 is provided with a feeding channel 13 connected with the circular cavity 2, and a discharge channel 14 connected with the circular cavity 2 is provided on the side wall of the machine base 1.

[0023] A dust suction chamber 15 is provided on the side wall of the machine base 1, and the dust suction chamber 15 is provided with a plurality of dust suction holes connected with the circular chamber 2. A filter screen 16 is fixedly installed inside the dust suction chamber 15, and a suction pump 17 is fixedly installed on the outer wall of the machine base 1. The suction end of the suction pump 17 is connected with the dust suction chamber 15. Through this arrangement, evaporated water vapor and dust in the slag can be extracted as soon as possible.

[0024] An output pipe 18 is fixedly installed at the output end of the suction pump 17, a hollow frame plate 19 is fixedly sleeved on the outer wall of the base 1, and a plurality of air injection holes 20 are opened on the inner wall of the hollow frame plate 19, and the hollow frame plate 19 is connected to the output pipe 18. Through this arrangement, the airflow ejected by the suction pump 17 can be used to blow the powder when adding slag into the storage tank 12, so as to avoid the dust emission during the addition of materials.

[0025] A heat conducting block 21 is fixedly inserted into the bottom of each feeding trough 4 . This arrangement facilitates the transfer of the temperature inside the heating chamber 6 to the inside of the feeding trough 4 .

[0026] A discharge port is provided at the lower end of the dust suction chamber 15, and a sealing cover 22 matching the discharge port is installed at the bottom of the machine base 1. The sealing cover 22 is detachably connected to the machine base 1. This arrangement facilitates the discharge of dust collected in the dust suction chamber 15.

[0027] A high-temperature steam inlet pipe 23 connected to the air inlet pipe 7 is fixedly mounted on the side wall of the sealing cover 8. This arrangement facilitates the introduction of high-temperature steam into the air inlet pipe 7.

[0028] In the present application, when in use, the slag to be fed is placed in the storage trough 12, and the slag enters the connected feeding trough 4 through the feeding channel 13, and the reduction motor 11 can drive the feeding roller 3 to rotate slowly through the rotating shaft 5. When the storage trough 12 filled with slag rotates to the discharge channel 14, under the action of gravity, the slag slides out through the discharge channel 14 and falls into the grinding equipment. In the feeding process, the external high-temperature steam is transported into the heating chamber 6 through the air inlet pipe 7, which can heat the feeding roller 3. By utilizing the increased temperature, the residual moisture on the surface of the slag can be evaporated as quickly as possible, reducing the residual moisture on the surface of the slag and minimizing the agglomeration of the powder after grinding due to residual moisture. The steam after heat exchange in the heating chamber 6 is discharged through the exhaust hole 9, the sealing cover 8 and the steam outlet pipe 10.

[0029] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and utility model concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A feeding device for producing granulated slag powder for a blast furnace, comprising a machine base (1), characterized in that: A circular cavity (2) is provided inside the machine base (1), and a feeding roller (3) is provided inside the circular cavity (2). A plurality of feeding grooves (4) are provided on the outer wall of the feeding roller (3). Rotating shafts (5) are fixedly installed at both ends of the feeding roller (3), and both rotating shafts (5) are rotatably connected to the circular cavity (2). A heating cavity (6) is provided inside the feeding roller (3), and an air intake pipe (7) coaxial with the rotating shaft (5) is fixedly inserted into the cavity wall of the heating cavity (6). A sealing cover (8) coaxial with the rotating shaft (5) is fixedly installed on the side wall of the machine base (1), and the air intake pipe (7) is rotatably connected to the side wall of the sealing cover (8). One of the rotating shafts (5) and the feeding roller (3) is provided with an exhaust hole (9), and the heating chamber (6) is connected to the sealing cover (8) through the two exhaust holes (9). A steam outlet pipe (10) is fixedly inserted into the side wall of the sealing cover (8). A reduction motor (11) is fixedly installed on the outer side wall of the machine base (1), and the reduction motor (11) is transmission-connected to the rotating shaft (5) on the same side. The machine base (1) is provided with a material storage trough (12), and the material storage trough (12) is provided with a feeding channel (13) connected to the circular cavity (2). The side wall of the machine base (1) is provided with a discharge channel (14) connected to the circular cavity (2).

2. A feeding device for producing granulated slag powder for blast furnace according to claim 1, characterized in that: A dust suction chamber (15) is provided on the side wall of the machine base (1), and a plurality of dust suction holes are provided in the dust suction chamber (15) which are connected to the circular chamber (2). A filter screen (16) is fixedly installed inside the dust suction chamber (15), and a suction pump (17) is fixedly installed on the outer side wall of the machine base (1), and a suction end of the suction pump (17) is connected to the dust suction chamber (15).

3. A feeding device for producing granulated slag powder for blast furnace according to claim 2, characterized in that: An output pipe (18) is fixedly mounted on the output end of the suction pump (17); a hollow frame plate (19) is fixedly sleeved on the outer wall of the machine base (1); and a plurality of air injection holes (20) are opened on the inner wall of the hollow frame plate (19); the hollow frame plate (19) is in communication with the output pipe (18).

4. The feeding device for producing granulated slag powder for blast furnace according to claim 1, characterized in that: A heat conducting block (21) is fixedly inserted into the bottom of each feed trough (4).

5. The feeding device for producing granulated slag powder for blast furnace according to claim 2, characterized in that: A discharge port is provided at the lower end of the dust suction chamber (15), and a sealing cover (22) matching the discharge port is installed at the bottom of the machine base (1), and the sealing cover (22) is detachably connected to the machine base (1).

6. A feeding device for producing granulated slag powder for blast furnace according to claim 1, characterized in that: A high-temperature steam inlet pipe (23) connected to the air inlet pipe (7) is fixedly mounted on the side wall of the sealing cover (8).

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