CN216919321U

CN216919321U - LF refining slag recycling apparatus

Info

Publication number: CN216919321U
Application number: CN202122725794.6U
Authority: CN
Inventors: 刘晓利; 任志鑫; 李露
Original assignee: Shanxi Jianlong Industrial Co Ltd
Current assignee: Shanxi Jianlong Industrial Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-07-08
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses an LF refining slag recycling device, which comprises a cooling bed support, wherein a slag basin is arranged on the cooling bed support, an air cooling assembly capable of providing cooling air for the upper end and the lower end of the slag basin is arranged on the cooling bed support, an installation plate is arranged on the slag basin, and an infrared imager for detecting the temperature of slag in the slag basin is obliquely arranged at the upper end of the installation plate. The LF refining slag recycling device is provided with the cold bed support capable of placing the slag basin, the air cooling assembly and the infrared imager, strictly controls the lattice transition temperature in the cold state recycling process of the refining slag, realizes supercooling, reduces the pulverization rate, reuses the crystal lattice transition temperature in the LF slagging process, realizes efficient cold state recycling of the LF refining slag, and reduces the refining cost.

Description

LF refining slag recycling apparatus

Technical Field

The utility model relates to the field of recycling of waste residues in metallurgical industry, in particular to a recycling device for LF refining slag.

Background

With the day-to-day competition of the steel market, steel plants are forced to research new processes and new technologies to develop high-quality and low-cost products to occupy the market. Especially, in the process of producing high-end products in the LF external refining process, how to recycle the refining slag and reduce the production cost is urgent. And the hot on-line recycling of the refining slag can influence the metallurgical production time. Traditional natural cooling recycle takes place the pulverization at the cooling process and produces the raise dust polluted environment, and seriously influences the rate of recovery utilization, so we propose an LF refining slag recycling device to solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a device for recycling LF refining slag, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a device is recycled to LF refining slag, includes the cold bed support, the sediment basin has been placed on the cold bed support, install the forced air cooling subassembly that can provide the cooling air for sediment basin upper and lower end on the cold bed support, install the mounting panel on the sediment basin just the upper end slope of mounting panel is provided with the infrared imaging appearance that is used for detecting the inside slay temperature of sediment basin.

Preferably, the cooling bed support comprises a ring body, a plurality of groups of supporting legs are circumferentially arranged at the lower end of the ring body, a plurality of groups of supporting plates corresponding to the supporting legs are arranged on the inner annular wall of the ring body, and the upper ends of the supporting plates are arranged in an arc shape.

Preferably, the support plates and the corresponding support legs are fixedly connected through reinforcing rods, and the reinforcing rods are obliquely arranged.

Preferably, the air cooling assembly comprises a vertical pipe penetrating through the cooling bed support, an air inlet pipe which can be connected with the output end of the air blower is arranged on the vertical pipe, and the upper end and the lower end of the vertical pipe are respectively provided with a cold air pipe and two sets of cold air pipes which are respectively positioned above and below the slag basin.

Preferably, the input end of the cold air pipe above is connected with the upper end of the vertical pipe in a relatively rotating mode through a rotary joint.

Preferably, the cold air pipe includes the ring canal of a plurality of groups diameter variation in size, and a plurality of groups the ring canal is arranged and the diameter grow in proper order from inside to outside, and a plurality of groups the axle center of ring canal is located the same point, and a plurality of groups all be provided with a plurality of groups on the ring canal is close to the tip of sediment basin and be the even equidistant tuber pipe of arranging of circumference, a plurality of groups the ring canal all is connected through the connecting pipe.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the cold bed support capable of placing the slag basin, the air cooling assembly and the infrared imager are arranged, the lattice transition temperature in the cold recovery process of the refining slag is strictly controlled, supercooling is realized, the pulverization rate is reduced, the crystal lattice transition temperature is reused in the LF slagging process, the high-efficiency cold recovery and reuse of the LF refining slag are realized, and the refining cost is reduced.

Drawings

FIG. 1 is an overall structure diagram of an LF refining slag recycling apparatus of the present invention;

FIG. 2 is a bottom view of a cooling bed support of an LF refining slag recycling device of the present invention;

FIG. 3 is a structural view of an air cooling unit of an LF refining slag recycling apparatus according to the present invention.

In the figure: 1. a slag basin; 2. an air-cooled assembly; 21. a vertical tube; 22. an air inlet pipe; 23. a cold air pipe; 24. a rotary joint; 3. a cooling bed support; 31. supporting legs; 32. a ring body; 33. a support plate; 34. a reinforcing bar; 4. mounting a plate; 5. an infrared imager.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in figures 1-3, a device is recycled in recovery of LF refining slag, including cold bed support 3, placed slag basin 1 on the cold bed support 3, install on the cold bed support 3 and can provide the air-cooled subassembly 2 of cooling air for slag basin 1 upper and lower end, the upper end slope that installs mounting panel 4 and mounting panel 4 on the slag basin 1 is provided with the infrared imager 5 that is used for detecting 1 inside slay temperature of slag basin.

The cold bed support 3 includes ring body 32, and the lower extreme of ring body 32 is that the circumference is provided with a plurality of groups supporting legs 31, and the upper end that is provided with a plurality of groups backup pad 33 and a plurality of groups backup pad 33 corresponding with supporting legs 31 on the inner ring wall of ring body 32 sets up to the arc setting, and the cold bed support 3 of this structure can reduce the area of contact of cold bed support 3 and sediment basin 1, and is equipped with the space between adjacent two sets of backup pad 33, is favorable to the flow of air, the quick heat dissipation of sediment basin 1 of being convenient for.

A plurality of groups of supporting plates 33 are fixedly connected with the corresponding supporting feet 31 through reinforcing rods 34, the reinforcing rods 34 are obliquely arranged, the structural strength of the supporting plates 33 can be enhanced through the reinforcing rods 34, and the supporting plates are prevented from being damaged due to overlarge born gravity.

The air cooling component 2 comprises a vertical pipe 21 which runs through the cooling bed support 3, an air inlet pipe 22 which can be connected with the output end of an air blower is arranged on the vertical pipe 21, the upper end and the lower end of the vertical pipe 21 are respectively provided with a cold air pipe 23, two sets of cold air pipes 23 are respectively positioned above and below the slag basin 1, wind power can be input into the air cooling component 2 through the air blower, the upper end and the lower end of the slag basin 1 can be simultaneously cooled through air cooling through spraying out of the two sets of cold air pipes 23, and the heat dissipation effect can be further improved.

The input of top cold blast pipe 23 passes through rotary joint 24 and is connected with the upper end relative rotation of standpipe 21, when slag basin 1 need hoist and mount to cold bed support 1 on, in order to avoid the cold blast pipe 23 that the top set up to form to block the hoist and mount operation, the rotatory cold blast pipe 23 of accessible can be so that its top of deviating slag basin 1, the hoist and mount of slag basin 1 of being convenient for.

The cold-blast pipe 23 includes the ring canal of a plurality of groups diameter variation in size, and a plurality of groups ring canals are arranged and the diameter grow in proper order from inside to outside in proper order, and the axle center of a plurality of groups ring canals is located the same point, all is provided with a plurality of groups on the tip that a plurality of groups ring canals are close to sediment basin 1 and is the even equidistant play tuber pipe of arranging of circumference, and a plurality of groups ring canal all are connected through the connecting pipe.

The utility model relates to an LF refining slag recycling device, which comprises the following working steps:

1. pouring the refining slag with the content of SiO2 less than 8% into a special cooling slag basin.

2. And controlling the thickness of the molten slag in the slag basin not to be higher than 10mm so as to ensure the controllability of the cooling process.

3. The slag basin 1 filled with the high-temperature refined slag is moved to a special cooling bed bracket 3, cold air pipes 23 are uniformly distributed at a proper height from top to bottom on the cooling bed bracket 3, and the whole device is arranged in a cold pit with a proper depth.

4. The refining slag is slowly cooled by air or naturally, and the infrared imager 5 monitors the temperature condition of the slag in the slag basin.

5. When the temperature of the slag is reduced to 550 ℃, the blast volume is increased to rapidly cool the slag in the slag basin in the cold pit.

6. Cooling the molten slag to below 50 ℃ or natural temperature, moving the slag basin out of the cold pit, tipping the cold refining slag in a jaw crushing or artificial crushing site, and crushing and screening the cold refining slag to meet the requirement of the LF furnace on the size fraction.

7. And packaging and conveying the cold refining slag to an LF furnace, and feeding the cold refining slag to a special storage bin for slagging. Replace partial refining slag or slag materials such as lime and the like. According to the current refining slag price of 2300 yuan/t, 0.5-0.6 kg is replaced, the cost can be saved by 1.1-1.3 yuan, the slag forming is fast, and the smelting period is shortened by 3-5 minutes/furnace.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims

1. The utility model provides a device is recycled to LF refining slag, includes cold bed support (3), its characterized in that: placed slag basin (1) on cold bed support (3), install on cold bed support (3) and can provide forced air cooling subassembly (2) of cooling air for slag basin (1) lower extreme, install mounting panel (4) just on slag basin (1) the upper end slope of mounting panel (4) is provided with infrared imager (5) that are used for detecting slag basin (1) inside slay temperature.

2. The device of claim 1, wherein the device for recycling LF refining slag comprises: the cooling bed support (3) comprises a ring body (32), wherein the lower end of the ring body (32) is provided with a plurality of groups of supporting legs (31) in a circumferential mode, a plurality of groups of supporting plates (33) corresponding to the supporting legs (31) and a plurality of groups of supporting plates (33) are arranged on the inner annular wall of the ring body (32), and the upper ends of the supporting plates (33) are arranged in an arc shape.

3. The device of claim 2, wherein the device for recycling LF refining slag comprises: the supporting plates (33) are fixedly connected with the corresponding supporting legs (31) through reinforcing rods (34), and the reinforcing rods (34) are obliquely arranged.

4. The device of claim 1, wherein the device for recycling LF refining slag comprises: the air cooling assembly (2) comprises a vertical pipe (21) penetrating through the cooling bed support (3), an air inlet pipe (22) capable of being connected with the output end of an air blower is arranged on the vertical pipe (21), a cold air pipe (23) and two sets of cold air pipes are respectively arranged at the upper end and the lower end of the vertical pipe (21), and the cold air pipes (23) are respectively positioned above and below the slag basin (1).

5. The LF refining slag recycling device of claim 4, wherein: the input end of the cold air pipe (23) is connected with the upper end of the vertical pipe (21) in a relatively rotating way through a rotary joint (24).

6. The LF refining slag recycling device as claimed in claim 4 or 5, wherein: the cold-air pipe (23) include the ring canal of a plurality of groups diameter variation in size, a plurality of groups the ring canal is arranged and the diameter grow in proper order from inside to outside, a plurality of groups the axle center of ring canal is located the same point, a plurality of groups all be provided with a plurality of groups and be the even equidistant tuber pipe of arranging of circumference on the ring canal is close to the tip of sediment basin (1), a plurality of groups the ring canal all is connected through the connecting pipe.