High-pressure gas-water mixed steel slag granulating device

Abstract

The utility model discloses a high-pressure gas-water mixed steel slag granulating device which comprises a spraying box, the spraying box is provided with a water tank and a high-pressure chamber, one side of the high-pressure chamber is provided with a communicated gas inlet pipe, one side of the water tank is provided with a communicated water inlet pipe, one side of the water tank is provided with a spraying assembly communicated with the high-pressure chamber, and the water tank is provided with a water outlet pipe. One end of the water outlet pipe is arranged in the spraying assembly to form a sleeving structure, so that water and gas are mixed at the spraying assembly; a pressure release valve is arranged on one side of the water tank to control water outlet pressure of the water outlet pipe; an adjusting valve is arranged on one side of the high-pressure cavity and used for controlling the air inlet amount of the air inlet pipe. According to the device, water and gas can be combined to granulate liquid steel slag, the effects of the water and the gas on the steel slag in the granulating process are effectively mixed, the steel slag can be granulated through air injection, and meanwhile steel slag particles can be wrapped and cooled through the water.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel slag granulation treatment, in particular to a high-pressure gas-water mixed steel slag granulation device. Background Art

[0002] In the process of steel slag treatment, hot pouring method, drum method, water quenching method and granulation method are usually used. Among them, the granulation method is to melt the steel slag at high temperature, so that the liquid slag flies forward under the impact of compressed air when pouring out. During the flight, the compressed air oxidizes the high-temperature liquid steel slag, so that the slag forms spherical fine particles;

[0003] After searching, the prior art announcement number is CN 212247094 U, which is an adjustable high-temperature liquid slag granulation device, including a slag granulator, a gas pipeline, an air flow adapter, an air flow booster pipeline, a gas storage tank, a compressed air pipeline, and a regulating valve. The slag granulator includes a lifting adjustment mechanism, a lateral adjustment mechanism, an angle adjustment mechanism, and a supersonic gas injector; the angle and position of the slag granulator can be adjusted by various adjustment mechanisms, and the direction of the injected air flow can be adjusted; wherein the slag granulator uses a high-speed air flow to granulate the liquid slag;

[0004] After searching, the prior art announcement number is CN 111979366 A, which is a liquid steel slag air quenching granulation production line and its production process. The liquid steel slag air quenching granulation production line includes an electric control room, a compressed air source, an air duct, a steel slag granulation mechanism, a steel slag treatment room, an exhaust purification tower, an exhaust duct, a cooling circulation pool, a slag recovery mechanism, a slag pool, and an observation room. The liquid steel slag air quenching granulation production process includes gas introduction, steel slag pouring, granulator adjustment, air quenching granulation, smoke dust treatment, granulated particle cooling and collection; the invention makes the compressed air source directly act on the supersonic in the granulator through the air duct The gas injector can make the airflow to centrally quench the liquid slag, optimize the processing technology, and find the best working position to achieve a more ideal liquid slag granulation effect by increasing the adjustment of the granulator before the quenching granulation. The spray water pipe washes the smoke to a certain extent, and then the smoke enters the exhaust purification tower for further filtration and purification. The above technical solution adopts the granulation cooling process of first spraying air and then spraying water, which cannot make the spraying and cooling effects of water and gas blend with each other, but simply superimposes, which is easy to waste water resources.

[0005] According to the above technical scheme and the prior art, this patent provides a steel slag granulation device that can evenly mix gas and water when spraying them out, thereby improving the granulation effect and the utilization rate of water resources. Summary of the invention

[0006] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-pressure gas-water mixed steel slag granulation device, which can combine water and gas to granulate liquid steel slag, effectively combine the effects of water and gas on the steel slag granulation process, and can granulate the steel slag by jetting and impinging, and can also wrap and cool the steel slag particles by water.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A high-pressure air-water mixed steel slag granulation device comprises a spray box, wherein the spray box is provided with a water tank and a high-pressure chamber, one side of the high-pressure chamber is provided with a connected air inlet pipe, one side of the water tank is provided with a connected water inlet pipe, one side of the water tank is provided with a spray assembly connected to the high-pressure chamber, and the water tank is provided with a water outlet pipe, one end of the water outlet pipe is arranged inside the spray assembly to form a socket structure, so that water and air can be mixed at the spray assembly.

[0009] Preferably, the injection assembly includes a first nozzle and a second nozzle with the same structure, the first nozzle is larger than the second nozzle, and the first nozzle includes an air inlet end, a transition contraction portion, and an air outlet end; the transition contraction portion is arranged between the air inlet end and the air outlet end, and the transition contraction portion is provided with a chamfered smooth transition. When the gas passes through the transition contraction portion, the gas will be compressed due to the reduction in diameter, thereby increasing the impact force; the air outlet end is set as a conical surface, and the diameter of the air inlet end is larger than the diameter of the air outlet end.

[0010] Preferably, one end of the water outlet pipe is arranged inside the first nozzle, and the end of the water outlet pipe is arranged at the transition contraction part.

[0011] Through the cooperation between the air inlet end and the transition contraction part, the gas is first compressed when it is ejected, and then ejected after being subjected to the divergent effect of the conical surface at the air outlet end, which can not only ensure the injection distance of the gas but also expand the injection range of the gas. At the same time, since the end of the water outlet pipe is located at the transition contraction part of the first nozzle, the starting end of the divergent release effect generated by the gas being compressed to the conical surface of the air outlet end is at the same position as the end of the water outlet pipe of the water outlet pipe, so it can drive the water flow to achieve divergent release to the maximum extent, forming a uniformly mixed high-pressure gas-water mixture.

[0012] Preferably, the tails of the first nozzle and the second nozzle are both provided with threads, which are connected to the side wall of the spray box through the threads, so that they can be replaced and repaired.

[0013] Preferably, the side walls of the first nozzle and the second nozzle are both provided with hexagonal blocks to facilitate the rotation and tightening of the first nozzle and the second nozzle.

[0014] Preferably, the first nozzle and the second nozzle are arranged in a row, and the first nozzle is arranged above the second nozzle, so that the gas-water mixture sprayed by the first nozzle can ensure the spraying range and avoid the water therein from settling too quickly.

[0015] Preferably, a pressure relief valve is provided on one side of the water tank to control the water outlet pressure of the water outlet pipe.

[0016] Preferably, a regulating valve is provided on one side of the high-pressure chamber for controlling the air intake amount of the intake pipe.

[0017] Preferably, rotating shafts are provided on both sides of the spray box for controlling the rotation angle of the spray box so that the spray assembly can be adjusted to an optimal spraying angle.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1) Compared with ordinary spray boxes, the spray box in this scheme includes a water tank and a high-pressure chamber. Water is taken in through the water inlet pipe and then sprayed out through the water outlet pipe. The water flow generates water pressure in the water tank by the way that the water inlet volume is greater than the water outlet volume, so that a high-speed jet is generated when water is discharged from the water outlet pipe; further, the high-pressure chamber sprays high-pressure gas through the spray assembly, and the high-pressure gas and the high-speed water flow are mixed when sprayed out. In the process of slag treatment, not only the impact force is increased, but also a layer of water film is formed on the surface of the gas-water mixture and the high-temperature particle size slag, so as to achieve the purpose of faster cooling; at the same time, the air jet and the water spray are fully integrated into a whole, which improves the efficiency and quality of slag granulation; further, in the process of mixing the water film and the slag, the contact surface is wider, so that the free calcium oxide in the slag can be more fully digested;

[0020] 2) The gas is first compressed when it is ejected through the cooperation between the air inlet end and the transition contraction part, and then ejected after being subjected to the divergent effect of the conical surface at the air outlet end, which can not only ensure the injection distance of the gas but also expand the injection range of the gas. At the same time, since the end of the water outlet pipe is located at the transition contraction part of the first nozzle, the starting end of the divergent release effect generated by the gas being compressed to the conical surface of the air outlet end is at the same position as the end of the water outlet pipe of the water outlet pipe, so the water flow can be driven by gas injection to realize the divergent release to the maximum extent, forming a uniformly mixed high-pressure gas-water mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 This is a schematic diagram of the structure of a high-pressure gas-water mixed steel slag granulation device of the utility model. Figure 1 ;

[0022] Attached Figure 2 This is a schematic diagram of the structure of a high-pressure gas-water mixed steel slag granulation device of the utility model. Figure 2 ;

[0023] Attached Figure 3 This is a cross-sectional view of a high-pressure gas-water mixed steel slag granulation device. Figure 1 ;

[0024] Attached Figure 4 This is a top view of a high-pressure gas-water mixed steel slag granulation device of the utility model;

[0025] Attached Figure 5 This is a cross-sectional view of a high-pressure gas-water mixed steel slag granulation device. Figure 2 ;

[0026] Attached Figure 6 Yes Figure 3 A magnified schematic diagram of the local structure;

[0027] In the figure: 1, spray box; 11, water tank; 12, high-pressure chamber; 13, water inlet pipe; 14, air inlet pipe; 15, regulating valve; 16, injection assembly; 161, first nozzle; 1615, hexagonal block; 1611, air outlet end; 1612, transition contraction part; 1613, air inlet end; 1614, thread; 162, second nozzle; 17, water outlet pipe; 18, pressure relief valve; 19, rotating shaft. DETAILED DESCRIPTION

[0028] To facilitate the understanding of those skilled in the art, Figure 1-6 , the technical solution of the utility model is further specifically described.

[0029] A high-pressure air-water mixed steel slag granulation device comprises a spray box 1, wherein the spray box 1 is provided with a water tank 11 and a high-pressure chamber 12, wherein one side of the high-pressure chamber 12 is provided with a connected air inlet pipe 14, one side of the water tank 11 is provided with a connected water inlet pipe 13, one side of the water tank 11 is provided with a spray assembly 16 connected to the high-pressure chamber 12, and the water tank 11 is provided with a water outlet pipe 17, one end of the water outlet pipe 17 is arranged inside the spray assembly 16 to form a sleeve structure, so that water and air are mixed at the spray assembly 16.

[0030] The injection assembly 16 includes a first nozzle 161 and a second nozzle 162 with the same structure. The first nozzle 161 is larger than the second nozzle 162. The first nozzle 161 includes an air inlet end 1613, a transition contraction portion 1612, and an air outlet end 1611. The transition contraction portion 1612 is arranged between the air inlet end 1613 and the air outlet end 1611. The transition contraction portion 1612 is provided with a chamfered smooth transition. When the gas passes through the transition contraction portion 1612, it will be compressed due to the reduction in diameter, thereby increasing the impact force. The air outlet end 1611 is set as a conical surface, and the diameter of the air inlet end 1613 is larger than the diameter of the air outlet end 1611.

[0031] One end of the water outlet pipe 17 is disposed inside the first nozzle 161 , and the end of the water outlet pipe 17 is disposed at the transition contraction portion 1612 .

[0032] Through the cooperation between the air inlet end 1613 and the transition contraction part 1612, the gas is first compressed when it is ejected, and then ejected after being subjected to the divergent effect of the conical surface at the air outlet end 1611, which can not only ensure the injection distance of the gas but also expand the injection range of the gas. At the same time, since the end of the water outlet pipe 17 is located at the transition contraction part 1612 of the first nozzle 161, the starting end of the divergent release effect generated by the conical surface of the air outlet end 1611 after the gas is compressed is the same as the end of the water outlet pipe 17, so it can drive the water flow to realize the divergent release to the maximum extent, forming a uniformly mixed high-pressure gas-water mixture.

[0033] The tail of the first nozzle 161 and the tail of the second nozzle 162 are both provided with threads 1614, which are connected to the side wall of the spray box 1 through the threads, so that they can be replaced and repaired.

[0034] The side walls of the first nozzle 161 and the second nozzle 162 are both provided with hexagonal blocks 1615 to facilitate the rotation and tightening of the first nozzle 161 and the second nozzle 162 .

[0035] The first nozzle 161 and the second nozzle 162 are arranged in a row, and the first nozzle 161 is arranged above the second nozzle 162, so that the gas-water mixture sprayed by the first nozzle 161 can ensure the spraying range and prevent the water therein from settling too quickly.

[0036] A pressure relief valve 18 is provided on one side of the water tank 11 to control the water outlet pressure of the water outlet pipe 17 .

[0037] A regulating valve 15 is provided on one side of the high pressure chamber 12 for controlling the air intake amount of the air intake pipe 14 .

[0038] Rotating shafts 19 are provided on both sides of the spray box 1 for controlling the rotation angle of the spray box 1 so that the spray assembly 16 can be adjusted to an optimal spraying angle.

[0039] A high-pressure gas-water mixed slag granulation device, the working process is as follows:

[0040] During the slag granulation process, the high-pressure chamber 12 supplies air through the air inlet pipe 14, and then the water outlet pipe 17 supplies water through the water tank 11, and the water tank 11 supplies water through the water inlet pipe 13, wherein the end of the water outlet pipe 17 cooperates with the injection assembly 16 to allow water and air to be fully mixed, and then sprayed out, which can form a good cooling effect; wherein the pressure relief valve 18 on one side of the water tank 11 can adjust the vertical pressure and control the water outlet pressure of the water outlet pipe 17, and the regulating valve 15 can control the air intake amount of the air inlet pipe 14, so that the two can achieve the best degree of water and gas mixing.

[0041] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A high-pressure air-water mixed steel slag granulation device, comprising a spray box, characterized in that The spray box is provided with a water tank and a high-pressure chamber, one side of the high-pressure chamber is provided with an interconnected air inlet pipe, one side of the water tank is provided with a interconnected water inlet pipe, one side of the water tank is provided with a spray assembly connected to the high-pressure chamber, and the water tank is provided with a water outlet pipe, one end of the water outlet pipe is arranged inside the spray assembly to form a socket structure, so that water and gas can be mixed at the spray assembly; the spray assembly includes a first nozzle and a second nozzle with the same structure, the first nozzle is larger than the second nozzle, and the first nozzle includes an air inlet end, a transition contraction part, and an air outlet end; the transition contraction part is arranged between the air inlet end and the air outlet end, and a chamfered smooth transition is provided at the transition contraction part, and the gas will be compressed due to the reduction in diameter when passing through the transition contraction part, thereby increasing the impact force; the air outlet end is set as a conical surface, and the diameter of the air inlet end is larger than the diameter of the air outlet end.

2. The high-pressure gas-water mixed steel slag granulation device according to claim 1, characterized in that One end of the water outlet pipe is arranged inside the first nozzle, and the end of the water outlet pipe is arranged at the transition contraction part.

3. The high-pressure gas-water mixed steel slag granulation device according to claim 1, characterized in that The tails of the first nozzle and the second nozzle are both provided with threads, and are connected to the side wall of the spray box through the threads.

4. The high-pressure gas-water mixed steel slag granulation device according to claim 1, characterized in that The side walls of the first nozzle and the second nozzle are both provided with hexagonal blocks.

5. The high-pressure gas-water mixed steel slag granulation device according to claim 1, characterized in that The first nozzles and the second nozzles are arranged in a row, and the first nozzles are arranged above the second nozzles.

6. The high-pressure gas-water mixed steel slag granulation device according to claim 1, characterized in that A pressure relief valve is provided on one side of the water tank to control the water outlet pressure of the water outlet pipe.

7. The high-pressure gas-water mixed steel slag granulation device according to claim 1, characterized in that A regulating valve is provided on one side of the high pressure chamber for controlling the air intake amount of the air intake pipe.

8. The high-pressure gas-water mixed steel slag granulation device according to claim 1, characterized in that Rotating shafts are provided on both sides of the spray box for controlling the rotation angle of the spray box so that the spray assembly can be adjusted to an optimal spraying angle.

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