CN219942782U

CN219942782U - Novel steel slag recycling reaction device

Info

Publication number: CN219942782U
Application number: CN202321156606.5U
Authority: CN
Inventors: 朱祚峤; 毛瑞; 李涛; 施梦圆
Original assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Hongchang Steel Plate Co Ltd; Jiangsu Shagang Iron and Steel Research Institute Co Ltd
Current assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Hongchang Steel Plate Co Ltd; Jiangsu Shagang Iron and Steel Research Institute Co Ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-11-03
Anticipated expiration: 2033-05-15

Abstract

The utility model discloses a novel steel slag recycling reaction device, which comprises a reaction tank, wherein the reaction tank comprises a tank body and a tank cover; a plurality of spray pipes fixedly connected in the circumferential direction along the height direction of the tank body; a plurality of drainage grooves are formed along the circumferential direction of the bottom of the tank body; a screen is fixedly supported at the bottom of the tank body, and the top surface of the screen is higher than the top surface of the drainage tank; the reaction tank is characterized in that a rotary supporting seat is arranged on one side of the reaction tank and comprises a supporting rod connected with the tank body in a rotating mode, a supporting arm is horizontally arranged at the top end of the supporting rod, a connecting pipe is longitudinally connected to the front end of the supporting arm, the lower end of the connecting pipe is fixedly connected with the tank cover, and an air inlet spray gun is connected in the connecting pipe in a lifting mode. According to the reaction device, the tank cover and the tank body can be conveniently separated or closed through the rotary supporting seat; the plurality of spray pipes that this jar body both sides set up, the air inlet spray gun that the cover top goes up and down to set up can guarantee that the reaction is abundant, even goes on.

Description

Novel steel slag recycling reaction device

Technical Field

The utility model relates to the technical field of steel slag recycling, in particular to a novel steel slag recycling reaction device.

Background

The steel slag is one of main byproducts in the steel production process, and the annual steel slag produced by China is approximately 1 hundred million tons, but 60% of the steel slag is not effectively utilized, so the method has great significance for the resource utilization of the steel slag. The factor limiting the large-scale utilization of the steel slag is mainly that the steel slag contains a large amount of unstable free calcium oxide (f-CaO), and the existing ways for treating the free calcium oxide mainly comprise ways of heat stewing, pot stewing, roller, air quenching, disc splashing, rotating disc and the like, so that the problem of the free calcium oxide is difficult to effectively solve. Although there are many methods for improving the existing technology, such as pressurizing, bubbling carbon dioxide, etc., to convert free calcium oxide into calcium carbonate, the uniformity of the calcification process reaction needs to be further improved.

Disclosure of Invention

The utility model aims to: the utility model aims to provide a novel steel slag recycling reaction device which can enable steel slag to react rapidly and uniformly and improve the recycling utilization efficiency of the steel slag.

The technical scheme is as follows: the utility model relates to a novel steel slag recycling reaction device, which comprises:

the reaction tank comprises a tank body and a tank cover matched with the tank body;

the spray pipes comprise a plurality of spray pipes which are fixedly connected in the circumferential direction of the tank body along the height direction;

the water draining grooves comprise a plurality of water draining grooves which are arranged along the circumferential direction of the bottom of the tank body;

the screen is fixedly supported at the bottom of the tank body, and the top surface of the screen is higher than the top surface of the drainage tank;

the rotary support seat comprises a support rod which is rotationally connected with the tank body, a support arm is horizontally arranged at the top end of the support rod, a connecting pipe is longitudinally connected at the front end of the support arm, the lower end of the connecting pipe is fixedly connected with the tank cover, and an air inlet spray gun which extends into the tank body is connected in a lifting manner in the connecting pipe.

Preferably, the top end of the connecting pipe is provided with a supporting disc, and the top end of the supporting disc is rotatably connected with a rotary hand wheel;

the rotary hand wheel comprises a wheel disc and a wheel rim arranged on the outer ring of the wheel disc, a screw sleeve is arranged at the center of the wheel disc, the periphery of the screw sleeve is rotationally connected in a supporting disc through a supporting bearing, and a threaded area is arranged in the screw sleeve.

Preferably, the air inlet spray gun comprises a gun barrel, and a threaded area matched with the internal threads of the screw sleeve is arranged on the outer wall of the gun barrel along the axial direction of the gun barrel.

Preferably, the lower part of the air inlet spray gun is provided with an air spraying area, and the air spraying area comprises a plurality of spray holes uniformly distributed along the circumferential direction of the gun barrel.

Preferably, guide grooves are correspondingly formed in two sides of the gun barrel along the length direction of the gun barrel, and penetrate through the threaded area and the air injection area;

the upper and lower ends of the inner wall of the connecting pipe are respectively provided with a guide clamping block corresponding to the guide groove.

Preferably, the air inlet spray gun comprises a gun barrel, and a first air inlet pipe and a second air inlet pipe are arranged on the top end of the gun barrel in a branched mode.

Preferably, a plurality of quick-connection assemblies are circumferentially arranged on the tank body;

the quick-connection assembly comprises a hinged ear block fixedly arranged on the tank body and a U-shaped clamping block corresponding to the hinged ear block on the tank cover, wherein the hinged ear block is hinged with one end of a threaded connecting rod, and the threaded connecting rod can be upwards turned and clamped into the U-shaped clamping block and is tightly pressed on the U-shaped clamping block through a threaded knob.

Preferably, one side of the lower part of the tank body is fixedly connected with a slag discharging pipe.

Preferably, a plurality of supporting legs are circumferentially arranged at the bottom end of the tank body.

The beneficial effects are that: compared with the prior art, the utility model has the following advantages:

1. according to the reaction device, the tank cover and the tank body can be conveniently separated or closed through the rotary supporting seat, and the tank cover and the tank body are fixedly connected or separated through the quick-connection assembly;

2. paving high-dryness steel slag on a screen mesh at the bottom of a tank body, pouring molten high-temperature steel slag into a reaction tank, cooling the high-temperature steel slag by spraying pipes, lowering an air inlet spray gun and introducing carbon dioxide into the steel slag when the temperature of the steel slag is reduced to 600 ℃, introducing high-pressure steam into the tank body from the spraying pipes, and allowing the high-pressure steam to permeate into the center of a material and react with carbon dioxide gas together while smashing the steel slag, so that the reaction speed is increased, and completing the reaction to discharge the steel slag from a slag discharge pipe;

3. the plurality of spray pipes arranged on the two sides of the tank body and the air inlet spray gun arranged at the top end of the tank cover in a lifting manner can ensure that the reaction is sufficiently and uniformly carried out, thereby achieving good steel slag carbon fixation and recycling effects.

Drawings

FIG. 1 is a front view showing the construction of a reaction apparatus according to the present utility model;

FIG. 2 is a side view of the reaction apparatus shown in FIG. 1;

FIG. 3 is a top view of the reaction apparatus of FIG. 1;

FIG. 4 is a cross-sectional view of the rotary support base structure of FIG. 2;

FIG. 5 is a sectional view showing the internal structure of the reaction tank of FIG. 2;

FIG. 6 is a schematic view of the air intake lance of FIG. 2;

FIG. 7 is a cross-sectional view of the air intake lance of FIG. 6 in an axial configuration;

fig. 8 is a top view of the screen structure of fig. 5.

Reference numerals:

100. a reaction device;

1. a reaction tank; 11. a tank body; 12. a can lid; 13. a slag discharge pipe; 14. a drainage channel; 15. a shower pipe; 16. a support leg;

2. a quick-connect assembly; 21. a hinged ear block; 22. a threaded connecting rod; 23. a U-shaped clamping block; 24. a threaded knob;

3. a rotary support base; 31. a support block; 32. a support rod; 33. a reinforcing arm; 34. a support arm; 35. rotating a hand wheel; 351. a handle; 352. a rim; 353. a wheel disc; 354. a screw sleeve; 36. a connecting pipe; 37. a support plate; 38. a support bearing; 39. a guide clamping block;

4. an air inlet spray gun; 41. a barrel; 42. a first air inlet pipe; 43. a second air inlet pipe; 44. a threaded region; 45. a gas spraying area; 46. a guide groove; 47. a spray hole;

5. and (3) screening.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 8 of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.

As shown in figures 1-8, the novel steel slag recycling reaction device 100 comprises a reaction tank 1, wherein the reaction tank 1 comprises a tank body 11 and a tank cover 12 matched with the tank body, the tank body and the tank cover are made of high-temperature resistant materials, refractory bricks can be paved on the inner wall of a stainless steel shell, and the high-temperature resistance is improved. The spray pipes 15 are fixedly connected in the circumferential direction along the height direction of the tank 11, the spray pipes 15 are made of high-temperature resistant materials, the melting point temperature is above 600 ℃, if 304 stainless steel materials are adopted, and the structural strength needs to meet the requirements of high-pressure water spraying or high-pressure steam spraying. The number and the positions of the spray pipes 15 can be adjusted at will, and it is preferable that the high-pressure water or the high-pressure steam longitudinally cover the steel slag of the whole reaction tank 1. A plurality of drainage grooves 14 are formed along the circumferential direction of the bottom of the tank 11, a screen 5 is fixedly supported at the bottom of the tank 11, and the top surface of the screen is higher than the top surface of the drainage grooves 14; when the steel slag is paved on the screen 5, the steel slag in the reaction tank 1 is sprayed with water or steam through the spray pipe 15, and the water vapor flows into the bottom of the tank 11 after passing through the steel slag gap and is discharged out of the reaction tank 1 through the water discharge groove 14. One side of the lower part of the tank body 11 is fixedly connected with a slag discharging pipe 13, so that the slag is conveniently discharged after the reaction of the steel slag in the reaction tank 1 is finished, and the slag is subjected to subsequent treatment. A plurality of support legs 16 are circumferentially arranged at the bottom end of the tank 11.

As shown in fig. 1-3, a rotary supporting seat 3 is arranged on one side of the reaction tank 1, the rotary supporting seat 3 comprises a supporting block 31 fixedly connected to one side of the tank body, a supporting rod 32 is rotatably connected to the supporting block 31, a reinforcing arm 33 is arranged at the upper end of the tank body 11, the supporting rod 32 penetrates through the reinforcing arm 33 and can rotate freely, a supporting arm 34 is horizontally arranged at the top end of the supporting rod 32, a connecting pipe 36 is longitudinally connected to the front end of the supporting arm 34, the lower end of the connecting pipe 36 is fixedly connected with the tank cover 12, the tank cover 12 and the tank body 11 can be conveniently and rapidly separated in a staggered mode through the rotary supporting rod 32, and steel slag is conveniently filled into the reaction tank 1 for recycling.

As shown in fig. 4-7, a supporting disc 37 is fixedly arranged at the top end of the connecting pipe 36, and a rotary hand wheel 35 is rotatably connected to the top end of the supporting disc 37; the rotary hand wheel 35 comprises a wheel disc 353 and a wheel rim 352 arranged on the outer ring of the wheel disc, and a handle 351 is arranged at the top end of the wheel rim 352; the center of the wheel disc 353 is provided with a screw sleeve 354, the periphery of the screw sleeve 354 is rotationally connected in the supporting disc 37 through the supporting bearing 38, and a threaded area is arranged in the screw sleeve 354; the rotatable handwheel 35 is driven to rotate freely by the handle 351. An air inlet spray gun 4 is arranged in the screw sleeve 354, the air inlet spray gun 4 comprises a gun barrel 41, and the gun barrel 41 can be made of high-temperature resistant materials, such as 304 stainless steel materials; the gun barrel 41 top branch is provided with first intake pipe 42 and second intake pipe 43, and first intake pipe 42, second intake pipe 43 can let in high-pressure air and high-purity carbon dioxide respectively, and the carbon dioxide concentration in entering retort 1 is adjusted to the ratio of high-pressure air, the high-purity carbon dioxide of accessible regulation first intake pipe, second intake pipe, satisfies the demand of slag to carbon dioxide. The outer wall of the barrel 41 is provided with a threaded zone 44 along its axial direction which is adapted to the internal threads of the sleeve 354; the lower part of the gun tube 41 is provided with an air spraying area 45, the air spraying area 45 comprises a plurality of spray holes 47 which are uniformly distributed along the circumference of the gun tube 41, and carbon dioxide gas is uniformly sprayed into the steel slag of the reaction tank 1 through the air inlet spray gun 4. The gun tube 41 is correspondingly provided with guide grooves 46 along the two sides of the length direction, and the guide grooves 46 penetrate through the threaded area 44 and the air injection area 45; guide clamping blocks 39 are respectively arranged at the upper and lower ends of the inner wall of the connecting pipe 36 corresponding to the guide grooves 46. A pressure gauge (not shown) is provided at the top end of the can lid 12 to facilitate the regulation of the air pressure in the reaction tank 1. When the air inlet spray gun 4 works, the handle 351 drives the rotary hand wheel 35 to rotate, and the threaded area 44 on the gun barrel 41 is matched with the threaded sleeve 354, so that the air inlet spray gun 4 can lift along the connecting pipe 36, and the length of the air inlet spray gun 4 extending into the tank 11 can be adjusted; when steel slag is added, the rotary hand wheel 35 is driven to reversely rotate, the air inlet spray gun 4 can be driven to rise to a high position, the tank cover 12 is separated from the tank body 11 through the rotation of the support rod 32, and steel slag filling is performed; after the steel slag is filled, the supporting rod 32 is rotated to fixedly connect the tank cover 12 with the tank body 11, then the rotary hand wheel 35 is driven to forward overturn to drive the air inlet spray gun 4 to descend and insert the air inlet spray gun 4 into the steel slag in the reaction tank 1 for air injection preparation, and the depth of the air inlet spray gun 4 in the steel slag can be adjusted through the rotary hand wheel 35, so that the uniform reaction of the steel slag is satisfied.

As shown in fig. 1-3, a plurality of quick-connection assemblies 2 are circumferentially arranged on a tank body 11, each quick-connection assembly 2 comprises a hinged ear block 21 fixedly arranged on the tank body and a U-shaped clamping block 23 corresponding to the hinged ear block on a tank cover 12, the hinged ear block 21 is hinged with one end of a threaded connecting rod 22, and the threaded connecting rod 22 can be turned upwards to be clamped into the U-shaped clamping block 23 and is pressed on the U-shaped clamping block 23 through a threaded knob 24; the quick-connection assembly 2 can conveniently and efficiently realize the fixed connection between the tank body 11 and the tank cover 12.

The working principle or the working method of the utility model:

taking 1600 DEG steel slag poured from a fused slag pot as an example, firstly, separating a pot cover 12 from a pot body 11 through a rotary supporting seat 3, paving high-dryness steel slag on a screen 5 at the bottom of the pot body 11, pouring the fused high-temperature steel slag into a reaction pot 1, and closing the pot cover; then, cooling the high-temperature steel slag by spraying pipes 15, lowering an air inlet spray gun 4 and introducing carbon dioxide into the steel slag when the temperature of the steel slag is reduced to 600 ℃, and simultaneously introducing high-pressure steam into the tank body from the spraying pipes 15, wherein the high-pressure steam permeates into the center of the material and reacts with the carbon dioxide gas together when the steel slag is smashed, so that the reaction speed is increased; in the reaction process, the pressure is kept at 0.2-0.5 MPa, the tank cover 12 is opened for exhausting after the reaction time is controlled at 1-2 h, the operation can be repeated for a plurality of times, and then the steel slag is exhausted from the slag discharging pipe 13; the plurality of spray pipes arranged at the two sides of the tank 11 and the air inlet spray gun arranged in a lifting manner can ensure that the reaction is sufficiently and uniformly carried out, thereby achieving good steel slag carbon fixation and recycling effects.

The foregoing is a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model and are intended to be comprehended within the scope of the present utility model.

Claims

1. A novel steel slag recycling reaction device, characterized in that the reaction device (100) comprises:

the reaction tank (1), the reaction tank (1) comprises a tank body (11) and a tank cover (12) matched with the tank body;

the spray pipes (15) comprise a plurality of spray pipes (15) which are fixedly connected to the circumference of the tank body (11) along the height direction;

the water draining grooves (14) are formed in a plurality of mode that the water draining grooves (14) are arranged along the circumference of the bottom of the tank body (11);

the screen (5) is fixedly supported at the bottom of the tank body (11), and the top surface of the screen is higher than the top surface of the drainage groove (14);

the rotary support seat (3), rotary support seat (3) include with jar body rotate bracing piece (32) of being connected, bracing piece (32) top level is provided with support arm (34), support arm (34) front end longitudinal connection has connecting pipe (36), connecting pipe (36) lower extreme and cover (12) fixed connection, and lift connection has in connecting pipe (36) to stretch into air inlet spray gun (4) in jar body (11).

2. The novel steel slag recycling reaction device according to claim 1, wherein a supporting disc (37) is arranged at the top end of the connecting pipe (36), and a rotary hand wheel (35) is rotatably connected to the top end of the supporting disc (37);

the rotary hand wheel (35) comprises a wheel disc (353) and a wheel rim (352) arranged on the outer ring of the wheel disc, a screw sleeve (354) is arranged at the center of the wheel disc (353), the periphery of the screw sleeve (354) is rotationally connected in a supporting disc (37) through a supporting bearing (38), and a threaded area is arranged in the screw sleeve (354).

3. The novel steel slag recycling reaction device according to claim 2, wherein the air inlet spray gun (4) comprises a gun barrel (41), and a threaded area (44) which is matched with the internal threads of the screw sleeve (354) is arranged on the outer wall of the gun barrel (41) along the axial direction of the gun barrel.

4. A novel steel slag recycling reaction device according to claim 3, wherein the lower part of the air inlet spray gun (4) is provided with an air spraying area (45), and the air spraying area (45) comprises a plurality of spray holes (47) uniformly distributed along the circumference of the gun barrel (41).

5. The novel steel slag recycling reaction device according to claim 4, wherein guide grooves (46) are correspondingly formed in two sides of the gun barrel (41) along the length direction of the gun barrel, and the guide grooves (46) penetrate through the threaded region (44) and the air injection region (45);

guide clamping blocks (39) are respectively arranged at the upper end and the lower end of the inner wall of the connecting pipe (36) and correspond to the guide grooves (46).

6. The novel steel slag recycling reaction device according to claim 1, wherein the air inlet spray gun (4) comprises a gun barrel (41), and a first air inlet pipe (42) and a second air inlet pipe (43) are arranged at the top end of the gun barrel (41) in a branched manner.

7. The novel steel slag recycling reaction device according to claim 1, wherein a plurality of quick-connection assemblies (2) are circumferentially arranged on the tank body (11);

the quick-connection assembly (2) comprises a hinged ear block (21) fixedly arranged on the tank body and a U-shaped clamping block (23) corresponding to the hinged ear block on the tank cover (12), the hinged ear block (21) is hinged with one end of a threaded connecting rod (22), and the threaded connecting rod (22) can be upwards turned and clamped into the U-shaped clamping block (23) and is tightly pressed on the U-shaped clamping block (23) through a threaded knob (24).

8. The novel steel slag recycling reaction device according to claim 1, wherein a slag discharging pipe (13) is fixedly connected to one side of the lower part of the tank body (11).

9. The novel steel slag recycling reaction device according to claim 1, wherein a plurality of supporting legs (16) are circumferentially arranged at the bottom end of the tank body (11).