Device for removing inclusions in refining furnace of steel plant

Abstract

The utility model discloses an inclusion removing device for a refining furnace of a steel plant, and relates to the technical field of refined steel smelting. The inclusion removing device for the refining furnace of the steel plant comprises a supporting frame, a steel ladle is supported on the supporting frame, an exhaust component is arranged on the steel ladle and comprises an exhaust pipe arranged on one side of the steel ladle, an argon blowing component is arranged on the steel ladle, and the argon blowing component is connected with the exhaust pipe. The argon blowing component comprises a mounting plate arranged on one side of the steel ladle. According to the utility model, the gas inlet pipe is arranged in the exhaust pipe, so that heat exchange of exhausted waste gas can be realized, the exhausted waste gas can be cooled, argon can be heated, and molten steel in the ladle can be prevented from being influenced after the argon is introduced into the ladle; and meanwhile, the technical problem that in the prior art, waste gas is exhausted outwards, so that heat is wasted is solved, meanwhile, heated argon can be prevented from being too cold and too hot when passing through the air brick, and the service life of the air brick is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of refined steel smelting, in particular to an inclusion removal device for a refining furnace in a steel plant. Background Art

[0002] As a professional technology, argon blowing into the melt has been widely used in the metallurgical casting industry. It has a good effect on removing non-metallic inclusions and harmful gases in the melt, and also has a certain effect on uniform melt chemical composition and ensuring uniform temperature. Moreover, argon, as an inert gas, leaves no residue in the molten steel. Therefore, argon blowing is a green and ideal means of alloy purification. Whether from the perspective of metallurgical principles or practical applications, argon blowing into the melt has the functions of homogenization, degassing, purifying molten steel, and increasing vacuum melting, stirring and refining, which can significantly improve the purity of molten steel.

[0003] The Chinese utility model patent with application number 202121178734.0 discloses a highly practical automatic bottom blowing argon device for an LF furnace. The gas discharged by the above technical scheme is cooled by a cooling device, and the adsorption device adsorbs impurities in the gas to avoid direct gas discharge and pollution to the environment. The cooled gas will not burn the skin of the staff, reducing safety hazards; in actual use, the cooling device is used to cool the gas, resulting in a waste of heat, and directly passing the colder argon gas into the boiler will cause the temperature of the molten steel inside to drop sharply, and the air bricks are easily damaged due to overcooling and overheating.

[0004] For this purpose, a device for removing inclusions from the refining furnace of a steel plant is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and provide a device for removing inclusions from a refining furnace in a steel plant.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] The invention discloses an inclusion removal device for a refining furnace in a steel plant, comprising a support frame, on which a ladle is supported, on which an exhaust component is arranged, and the exhaust component comprises an exhaust pipe arranged at one side of the ladle, and on which an argon blowing component is arranged, and the argon blowing component comprises a mounting plate arranged at one side of the ladle, and a gas storage tank is arranged at the top of the mounting plate, and an air intake pipe is connected to one side of the gas storage tank, and a part of the air intake pipe is arranged inside the exhaust pipe, and a branch pipe extending downward and integrally formed is arranged on the exhaust pipe, and a one-way valve is arranged on the branch pipe, and a breathable component is arranged in the ladle, and the breathable component comprises a breathable brick arranged at the bottom end of the ladle.

[0008] Furthermore, a fixing frame is provided on the ladle, and a sealing cover is provided on the top of the ladle.

[0009] Furthermore, the ladle is provided with an inclusion removal component, the inclusion removal component comprises a sealing door hingedly provided on one side of the ladle and a guide plate provided on one side of the ladle, and a through slot is provided on the ladle.

[0010] Furthermore, a gas purification component is provided on the ladle, and the gas purification component includes a purification box arranged at the bottom end of the branch pipe, an activated carbon adsorption layer plate is arranged inside the purification box, and a dewatering pipe is arranged on one side of the purification box.

[0011] Furthermore, a stirring member is provided on the ladle, and the stirring member includes two motors arranged at the bottom end of the ladle, a connecting rod is connected to the main shaft of the motor, a stirring rod is connected to the connecting rod, and the connecting rod is arranged in the ladle.

[0012] Furthermore, an adjusting valve is arranged on the air intake pipe, a flow sensor is arranged in the air intake pipe, a cavity is opened at the bottom of the air permeable brick, and one end of the air intake pipe extends into the cavity.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model can achieve heat exchange of the exhaust gas by arranging the air inlet pipe in the exhaust pipe, thereby cooling the exhaust gas and heating the argon gas. After the argon gas is introduced into the boiler, it can avoid affecting the molten steel inside the boiler, and at the same time solves the technical problem of waste of heat caused by discharging the exhaust gas to the outside in the prior art. At the same time, the heated argon gas can avoid overcooling and overheating when passing through the air permeable brick, thereby increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a cutaway stereogram of the utility model;

[0017] Figure 3 It is a sectional plan view of the utility model.

[0018] Figure numerals: 1. support frame; 2. ladle; 201. fixing frame; 202. sealing cover; 3. inclusion removal component; 301. through groove; 302. sealing door; 303. guide plate; 4. exhaust component; 401. exhaust pipe; 402. one-way valve; 5. gas purification component; 501. purification box; 502. activated carbon adsorption layer plate; 503. outlet pipe; 6. stirring component; 601. motor; 602. connecting rod; 603. stirring rod; 7. argon blowing component; 701. mounting plate; 702. gas storage tank; 703. air inlet pipe; 704. regulating valve; 705. flow sensor; 8. air permeable component; 801. air permeable brick; 802. cavity. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] like Figure 1-3As shown, the inclusion removal device of the refining furnace of a steel plant comprises a support frame 1, on which a ladle 2 is supported, on which an exhaust component 4 is arranged, the exhaust component 4 comprises an exhaust pipe 401 arranged on one side of the ladle 2, on which an argon blowing component 7 is arranged, the argon blowing component 7 comprises a mounting plate 701 arranged on one side of the ladle 2, a gas storage tank 702 is arranged on the top of the mounting plate 701, one side of the gas storage tank 702 is connected to an air intake pipe 703, a part of the air intake pipe 703 is arranged inside the exhaust pipe 401, the exhaust pipe 401 is provided with a branch pipe integrally extending downward, the branch pipe is provided with a one-way valve 402, a breathable component 8 is arranged in the ladle 2, and the breathable component 8 comprises a The air brick 801 is placed at the bottom end of the ladle 2; specifically, more specifically, the gas storage tank 702 stores high-pressure argon gas, so the argon gas can be introduced into the ladle 2 through the air inlet pipe 703, and the high-temperature gas will be discharged from the exhaust pipe 401. The air inlet pipe 703 for conveying argon gas can be heated when passing through the exhaust pipe 401, thereby realizing heat exchange between the argon gas and the exhaust gas, thereby cooling the exhaust gas to prevent the exhaust gas from being too hot. At the same time, after the heated argon gas is introduced into the ladle 2, it will not have a significant impact on the temperature of the molten steel inside the ladle 2, and it can also prevent the air brick 801 from being overheated or overcooled, thereby increasing the service life of the air brick 801.

[0024] like Figure 1 As shown, a fixing frame 201 is provided on the ladle 2, and a sealing cover 202 is provided on the top of the ladle 2; specifically, through the fixing frame 201, the ladle 2 can be supported on the support frame 1, which is convenient for removing the ladle 2, and the provided sealing cover 202 can facilitate feeding and discharging.

[0025] like Figure 2 As shown, the ladle 2 is provided with an inclusion removal component 3, which includes a sealing door 302 hingedly arranged on one side of the ladle 2 and a guide plate 303 arranged on one side of the ladle 2, and a through slot 301 is opened on the ladle 2; specifically, through the through slot 301, impurities such as inclusions floating on the surface of the molten steel can be scraped out by using a tool, the guide plate 303 can guide the impurities such as inclusions, and facilitate the collection of impurities, and the sealing door 302 can seal the ladle 2 when closed to prevent oxygen from entering the ladle 2.

[0026] like Figure 3As shown, a gas purification component 5 is provided on the ladle 2, and the gas purification component 5 includes a purification box 501 arranged at the bottom end of the branch pipe, an activated carbon adsorption layer plate 502 is arranged inside the purification box 501, and an outlet pipe 503 is arranged on one side of the purification box 501; specifically, the exhaust gas discharged to the outside can be purified after being processed by the activated carbon adsorption layer plate 502, thereby avoiding polluting the environment, and the one-way valve 402 arranged at the same time can prevent oxygen and cold air from entering the ladle 2.

[0027] like Figure 3 As shown, a stirring member 6 is provided on the ladle 2, and the stirring member 6 includes two motors 601 arranged at the bottom end of the ladle 2, a connecting rod 602 is connected to the main shaft of the motor 601, a stirring rod 603 is connected to the connecting rod 602, and the connecting rod 602 is arranged in the ladle 2; specifically, the motor 601 can drive the connecting rod 602 to rotate, and then drive the stirring rod 603 to rotate, so as to stir the molten steel inside the ladle 2, thereby accelerating the contact between the molten steel and the argon gas, and thereby accelerating the efficiency of removing inclusions in the molten steel.

[0028] like Figure 3 As shown, an adjusting valve 704 is provided on the air inlet pipe 703, a flow sensor 705 is provided in the air inlet pipe 703, a cavity 802 is provided at the bottom of the air-permeable brick 801, and one end of the air inlet pipe 703 extends into the cavity 802; specifically, the flow sensor 705 can detect the amount of gas passing through, and increasing the argon blowing flow rate can improve the stirring energy and shorten the uniform mixing time, which is beneficial to desulfurization, so it is necessary to control the delivery flow rate of argon gas, and the flow rate of argon gas can be regulated by adjusting the valve 704, thereby ensuring the delivery flow rate of argon gas, and the argon gas is blown into the molten steel through the air-permeable brick at the bottom to form a large number of fine argon bubbles, so that the inclusions in the molten steel can be quickly processed.

[0029] In summary: high-pressure argon is stored in the gas storage tank 702, so argon can be introduced into the ladle 2 through the inlet pipe 703, and high-temperature gas will be discharged from the exhaust pipe 401. The inlet pipe 703 for transporting argon can be heated when passing through the exhaust pipe 401, thereby achieving heat exchange between argon and the exhaust gas, thereby cooling the exhaust gas to prevent the exhaust gas from being too hot.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for removing inclusions from a refining furnace in a steel plant, comprising a support frame (1), on which a ladle (2) is supported, characterized in that: The ladle (2) is provided with an exhaust component (4), the exhaust component (4) comprising an exhaust pipe (401) arranged at one side of the ladle (2); the ladle (2) is provided with an argon blowing component (7), the argon blowing component (7) comprising a mounting plate (701) arranged at one side of the ladle (2); a gas storage tank (702) is arranged at the top end of the mounting plate (701); one side of the gas storage tank (702) is connected to an air intake pipe (703), a part of the air intake pipe (703) is arranged inside the exhaust pipe (401); a branch pipe extending downward and integrally formed is arranged on the exhaust pipe (401), and a one-way valve (402) is arranged on the branch pipe; a breathable component (8) is arranged inside the ladle (2), and the breathable component (8) comprises a breathable brick (801) arranged at the bottom end of the inside of the ladle (2).

2. The device for removing inclusions from a steelmaking furnace according to claim 1, characterized in that: The steel ladle (2) is provided with a fixing frame (201), and the top end of the steel ladle (2) is provided with a sealing cover (202).

3. The device for removing inclusions from a steelmaking furnace according to claim 1, characterized in that: The steel ladle (2) is provided with an inclusion removal component (3), the inclusion removal component (3) comprising a sealing door (302) hingedly arranged on one side of the steel ladle (2) and a guide plate (303) arranged on one side of the steel ladle (2), and a through slot (301) is opened on the steel ladle (2).

4. The device for removing inclusions from a steelmaking furnace according to claim 1, characterized in that: The ladle (2) is provided with a gas purification component (5), and the gas purification component (5) comprises a purification box (501) arranged at the bottom end of the branch pipe, an activated carbon adsorption layer plate (502) is arranged inside the purification box (501), and a dewatering pipe (503) is arranged on one side of the purification box (501).

5. The device for removing inclusions from a steelmaking furnace according to claim 1, characterized in that: The ladle (2) is provided with a stirring member (6), and the stirring member (6) comprises two motors (601) arranged at the bottom end of the ladle (2), a connecting rod (602) is connected to the main shaft of the motor (601), and a stirring rod (603) is connected to the connecting rod (602), and the connecting rod (602) is arranged in the ladle (2).

6. The device for removing inclusions from a steelmaking furnace according to claim 1, characterized in that: An adjusting valve (704) is arranged on the air inlet pipe (703), a flow sensor (705) is arranged inside the air inlet pipe (703), a cavity (802) is opened at the bottom of the air permeable brick (801), and one end of the air inlet pipe (703) extends into the cavity (802).

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