CN115420116A - Charging system of metallurgical furnace - Google Patents

Abstract

The invention discloses a charging system of a metallurgical furnace, which comprises a fixed support frame, an electric steamed stuffed bun, an outer layer smoke hood, a hoisting device and the metallurgical furnace, wherein a furnace mouth of the metallurgical furnace is positioned in the outer layer smoke hood and is arranged corresponding to the electric steamed stuffed bun; the outer layer smoke cover is provided with an entrance for the electric steamed stuffed bun to enter and exit and a cover for controlling the entrance to be opened and closed; through the structural arrangement of the invention, the automatic charging, deslagging, discharging and other operations of the metallurgical furnace are realized in a totally-enclosed environment, and the smoke gas is collected under a closed working condition, so that the problem of low-altitude pollution is effectively solved, the environmental protection of the metallurgical furnace production is improved, the operation rate of a metallurgical crane is improved, and the service life of the metallurgical furnace is prolonged.

Description

Charging system of metallurgical furnace

Technical Field

The invention belongs to the technical field of pyrometallurgical equipment, and particularly relates to a charging system of a metallurgical furnace.

Background

Metallurgical furnaces generally refer to process equipment with which pyrometallurgical processes are carried out at high temperatures. The metallurgical furnace may be a melting furnace, a converting furnace, a refining furnace, a top-blown converter, or various high-temperature heat treatment furnaces for batch or continuous processes. A common feature of these furnaces is that each furnace can perform one or more specific movements. Such as copper smelting, the PS converter of the common matte converting furnace, and the rotary anode furnace of the blister copper refining furnace. In the field of steel making, oxygen top-blown converters (or oxygen inclined-blown converters) are commonly used, and all the converters can rotate around a shaft to complete operations such as feeding, blowing, deslagging, discharging and the like.

These operations of the metallurgical furnace described above generally produce large amounts of SO ₂ And the smoke with harmful components causes serious air pollution, so various types of environment-friendly smoke hoods are generally arranged to collect the smoke as much as possible. For example, for a PS converter, a two-layer hood is usually provided for collecting flue gas, including an inner layer hood (also called a primary hood or a water-cooled hood) and an outer layer hood (also called a secondary hood or a ring-type hood), where the inner layer hood is used for collecting flue gas during normal converting operation of the PS converter, and the flue gas at this time contains SO ₂ High concentration, and can be used for preparing acid. The trapping rate of the inner smoke hood is very high and can reach more than 95%. The outer layer smoke hood is mainly used for collecting the flue gas dissipated during slag discharge and discharging of the PS converter, and the flue gas contains SO ₂ And (5) sending the low-concentration product to a ring set desulfurization treatment.

Most research in recent years has focused on how to improve the tightness and capture efficiency of these hoods. For example, patent CN205035423U proposes a fume collecting device for treating fume escaped from a horizontal PS converter, according to which a fume collecting system consisting of a sliding fume hood and an external fixed fume hood is described for absorbing fume generated during the process of transferring or transferring a converter mouth into an inner fume hood, copper discharging and slag dumping operations; when the sliding smoke hood is opened, the outer fixed smoke hood is used for absorbing smoke generated during the operation of charging and cleaning the converter mouth of the converter. Likewise, patents CN201811452981.8 and CN201921211847.9 describe the sliding smoke hood for PS converter, which is first proposed by patent CN205035423U, as a movable door and a walking movable smoke hood, respectively, without substantial difference.

Patent CN209338600U describes a front door of a top-blown converter for steel making, which comprises a left door and a right door, which are arranged outside a fixed smoke hood, wherein the left door and the right door are respectively provided with a driving motor, and can slide left and right along a track, and the principle of the front door is similar to that of the sliding smoke hood of the PS converter.

Patent CN203049011U describes a neotype PS converter system, including PS converter, fall to the ground petticoat pipe, steamed stuffed bun transportation passageway, steamed stuffed bun transportation level car, remote control metallurgy hang, fall to the ground petticoat pipe and steamed stuffed bun transportation passageway setting before the PS converter, the electronic flat car setting of steamed stuffed bun transportation is used for realizing the transportation of steamed stuffed bun in the workshop in the steamed stuffed bun transportation passageway, the setting is hung in falling to the ground petticoat pipe to the remote control metallurgy and is used for realizing the fuse-element transportation operation between steamed stuffed bun and the converter. The configuration mode actually allows the smoke to escape into the floor smoke hood and then is collected through the annular smoke collecting port at the top of the floor smoke hood, but the relatively closed space has large volume and causes serious pollution to a factory building, and the closed space blocks a converter front passage and does not accord with various maintenance and operation conditions of the converter.

Patent No. cn201621423449.X and patent No. CN211057200U both propose a charging device or arrangement of charging ports opened from one end or the periphery of the converter through a chute, which seems reasonable from the converter alone. However, due to the complexity of the converter system and the specific operating conditions, each set of converter system is generally configured with large-scale equipment such as a waste heat boiler, a residual anode feeder, converter dust collection and the like, and generally at least more than 3 sets of converter systems, so the feeding mode of the PS converter adopting the chute cannot be simply referred to the configuration of the current rotary anode furnace adopting the chute feeding, and the problems are well known to metallurgical technicians with experience in operating the PS converter. So far, no relevant landing application case exists.

It is known that all the above mentioned metallurgical furnaces in practical use have a common core problem that the problem of low-altitude pollution caused by the collection of flue gas during charging of the metallurgical furnace cannot be solved. When the metallurgical furnaces need to be charged from the furnace mouth, the charging action is finished by turning the steamed stuffed bun through the matching of the main hook and the auxiliary hook of the metallurgical crane. The problem that this brings is, in order to dodge the wire rope of metallurgical hanging main and auxiliary hook, the petticoat pipe that these metallurgical stove set up when the metallurgical stove feeds in raw material, must open to the charging furnace mouth, can't form a relative confined space and carry out the feeding operation, causes a large amount of flue gas to escape during the feeding operation and leads to the low latitude to pollute.

Therefore, the feeding mode of the existing metallurgical furnace needs to be further broken through, and the environmental protection property needs to be further improved.

Disclosure of Invention

The invention provides a charging system of a metallurgical furnace to overcome the defects of the prior art, effectively solves the problem of flue gas collection during charging of the metallurgical furnace, reduces environmental pollution and improves the environmental protection of the production operation of the metallurgical furnace.

In order to achieve the purpose, the invention adopts the following technical scheme: a charging system of a metallurgical furnace comprises a fixed support frame, an electric steamed stuffed bun and a cover, wherein the electric steamed stuffed bun and the cover are arranged on the fixed support frame, the outer layer smoke hood is arranged above the fixed support frame, the hoisting device is used for hoisting the electric steamed stuffed bun into the outer layer smoke hood, and the metallurgical furnace is at least partially positioned in the outer layer smoke hood; the outer layer of the smoke cover is provided with an entrance for the electric steamed stuffed bun to enter and exit and a cover for controlling the entrance to be opened and closed.

Preferably, the power supply module is an automatic remote power supply plugging device, and comprises a female head mounted on the hanger and a male head fixedly mounted on one side of the female head, the female head is electrically connected with the tilting driving member, the male head comprises a plug and a telescopic member for controlling the plug to stretch, and the plug is electrically connected with an external power supply and correspondingly inserted into the female head.

Preferably, the power supply assembly is a low-voltage power supply assembly, and includes a low-voltage power supply device for feeding power to the fixed support frame, a conductive device disposed on the hanger, and a voltage boosting device mounted on the hanger, wherein the conductive device is electrically connected to the voltage boosting device, and the voltage boosting device is electrically connected to the tilting driving member.

Preferably, the hanger comprises a cross beam and a hanger rod arranged on the cross beam, two ends of the cross beam are respectively provided with a protruding part, the top of the fixed support frame is provided with a limiting groove used for limiting the movement of the cross beam, and the protruding parts can be correspondingly lapped in the limiting groove.

Preferably, the suspender is at least two hinged rods hinged end to end in sequence, wherein the hinged rod at the topmost part is fixedly connected to the cross beam, and at least one hinged rod in the adjacent hinged rods hinged to each other is provided with a limiting part for limiting the rotating angle of the hinged rod.

Preferably, the cross beam is further provided with a lifting ring for lifting, and the lifting ring is a lifting ring located in the center of the cross beam or a plurality of lifting rings distributed on two sides of the cross beam.

The invention has the beneficial effects that: through the structural arrangement of the invention, the automatic charging, deslagging, discharging and other operations of the metallurgical furnace are realized in a closed environment, and the flue gas is collected under the working condition of a full closed loop, so that the problem of low-altitude pollution is effectively solved, and the environmental protection of the metallurgical furnace processing is improved; meanwhile, the operation rate of the metallurgical crane is greatly improved, misoperation which possibly occurs when the feeding of the metallurgical crane is controlled manually is directly avoided, the collision deformation of a furnace opening and the damage to furnace bricks are reduced, and the service life of the metallurgical furnace is effectively prolonged.

Drawings

Fig. 1 is a schematic front view of the present invention in a cross-sectional state.

FIG. 2 is a schematic cross-sectional side view of the present invention.

Fig. 3 is a schematic structural view of the electric steamed stuffed bun in a first hoisting state.

Fig. 4 is a structural schematic diagram of the electric steamed stuffed bun in a second hoisting state.

Fig. 5 is a schematic structural view of the electric steamed stuffed bun in a third hoisting state.

FIG. 6 is a schematic view of the material receiving of the electric steamed stuffed bun.

Reference numerals are as follows: 1. electrically steamed stuffed buns; 2. a metallurgical furnace; 3. fixing a support frame; 31. a limiting groove; 4. an outer layer hood; 50. feeding; 10. a hanger; 101. a cross beam; 102. a boom; 103. a hinged lever; 1031. a limiting part; 104. a male head; 105. a female head; 106. a protrusion; 108. a hoisting ring; 20. a tilt drive; 30. a steamed stuffed bun main body; 301. a trunnion; 40. a power supply component; 61. a chute; 62. a bag box; 63. a track; 64. an electric flat car; 70. and (4) hoisting in metallurgy.

Detailed Description

As shown in fig. 1 to 6, a charging system of a metallurgical furnace 2 comprises a fixed support frame 3, an electric steamed stuffed bun 1, an outer smoke hood 4, a hoisting device and the metallurgical furnace 2, wherein the electric steamed stuffed bun 1 is hung on the fixed support frame 3, and the metallurgical furnace 2 is positioned on one side of the electric steamed stuffed bun 1; outer petticoat pipe 4 cover is located fixed stay frame 3, electronic steamed stuffed bun 1 and metallurgical stove 2 tops, 2 fire door of metallurgical stove are located in the outer petticoat pipe 4 and with electronic steamed stuffed bun 1 corresponds the setting, establish respectively at the furnace body both ends of metallurgical stove 2 outer petticoat pipe 4 is outer to practice thrift the space of outer petticoat pipe 4.

Further, the outer layer hood 4 is provided with an entrance and an exit for the electric steamed stuffed bun 1 to enter and exit, and a cover is installed at the entrance and the exit to control the opening and closing of the entrance and the exit.

Specifically, the fixed support frame 3 is a support column located on two sides of the electric steamed stuffed bun 1, the electric steamed stuffed bun 1 comprises a hanger 10, a bun main body 30, a tilting drive part 20 and a power supply assembly 40, the hanger 10 comprises a cross beam 101 and a hanger rod 102, two ends of the cross beam 101 are respectively and fixedly connected with a protruding part 106, a limit groove is formed in the support column, the limit groove is located at the top of the support column, and when the electric steamed stuffed bun is mounted on the fixed support frame, the protruding parts are respectively lapped in the limit grooves of the corresponding support columns; the protruding part can be a round shaft or a square shaft, and the limiting groove can be an arc groove or a rectangular groove.

Further, the suspension rod 102 is composed of two hinge rods 103 hinged to each other up and down, wherein one end of the hinge rod 103 located above is fixedly connected to the bottom of the cross beam 101, the other end of the hinge rod 103 located below is hinged to the hinge rod 103 located below, one end of the hinge rod 103 located below is fixedly connected with a limiting portion 1031, when the two hinge rods 103 rotate to a certain angle relatively, the limiting portion 1031 can be a limiting portion fixedly connected to one side of the hinge rod 103 and interfere with the hinge rod 103 located above to limit the limit rotation angle between the hinge rods 103; generally, electronic steamed stuffed bun needs to be reinforced in steamed stuffed bun case 62, and steamed stuffed bun case 62 generally has the height restriction, consequently through the articulated connection of articulated pole 103 for crossbeam 101 can be folded for the horizontality through the activity hinge and place, has reduced electronic steamed stuffed bun 1's height on the one hand, and the superelevation is not guaranteed when transporting, and on the other hand avoids high temperature melt to pass crossbeam 101 when chute 61 blanking.

Further, the steamed stuffed bun main body 30 is rotatably mounted on the lower hinge rod 103 through the trunnion 301, and the material 50 is arranged in the steamed stuffed bun main body; the tilting drive member 20 is fixedly connected to the hinge rod 103 which is located below, and can be a three-phase or single-phase capacitor motor, and the output shaft of the tilting drive member 20 is connected to a trunnion 301 at one side of the steamed stuffed bun main body 30; the power supply assembly 40 is electrically connected to the tilt driving member 20.

As shown in fig. 3 to 5, further, the hoisting device is a single-hook or double-hook metallurgical crane 70.

Furthermore, the cross beam 101 is provided with a lifting ring 108, the lifting ring 108 can be a single lifting ring 108 arranged in the center of the cross beam 101, or can be two lifting rings 108 distributed at two ends of the cross beam 101, and lifting hooks of the metallurgical lifting can be correspondingly hooked on the lifting ring 108 or the protruding part 106, so that the electric steamed stuffed bun 1 can be lifted.

Further, in some embodiments, the power assembly 40 is a remote power automatic plugging device, which includes a female head 105 and a male head 104, the female head 105 is fixed to a side protrusion 106, which is electrically connected to the tilting drive member 20; the male head 104 is fixedly arranged in a designated area inside the outer smoke hood 4 and is positioned on one side of the female head 105 far away from the cross beam 101; public head 104 includes plug and extensible member, the extensible member can be the electric push rod, the plug install in on the activity end of electric push rod, plug and external power source electric connection just can correspond under the drive of extensible member and insert and locate in female head 105 to the realization is to the control of the long-range power supply of driving piece 20 that verts.

In some embodiments, the power supply assembly 40 is a low-voltage power supply assembly, which includes a voltage step-down device, a conducting device, and a voltage step-up device, which are conventional technologies, the voltage step-down device is disposed outside the outer hood 4 and is electrically connected to the fixed support frame 3; the conductive device is mounted on the protrusion 106 and is electrically connected to the voltage boosting device, which is electrically connected to the tilt driver 20; the voltage of a 380V power supply (three-phase or single-phase) is reduced to the safe voltage of 36V (or 24V) through a voltage reduction system, then the safe voltage of 36V is fed to the fixed support frame 3, after the protruding part 106 of the electric steamed stuffed bun 1 is contacted with the limiting groove 31, the low voltage is sent to a step-up transformer through a conducting device, the step-up transformer boosts the voltage to 380V, and therefore the tilting driving piece 20 of the electric steamed stuffed bun 1 is driven to work, and the steamed stuffed bun main body 30 is driven to tilt.

As shown in the figure, the specific implementation process of the invention is as follows: the method comprises the steps of firstly placing an empty electric steamed stuffed bun 11 on an electric flat car 64 by a metallurgical crane, then opening the electric flat car 64 into a steamed stuffed bun box 62 along a rail 63, then discharging a smelting furnace (such as a flash furnace, an austenite furnace or a side-blown furnace) and feeding materials 50 into a steamed stuffed bun main body 30 through a chute 61. After the main body 30 of the steamed stuffed bun is filled with materials, the electric steamed stuffed bun 1 is hoisted to a PS converter area through a metallurgical crane, the cover of the outer smoke hood 4 is opened, then the electric steamed stuffed bun 1 is hung on the fixed support frame 3 in front of the metallurgical furnace 2, then the metallurgical crane exits, and the cover of the outer smoke hood 4 is closed. The remote power automatic plugging device is started to enable the plug to be plugged into the female head 105, the tilting driving piece 20 is powered on to operate at the moment, then the steamed stuffed bun main body 30 is tilted to pour the materials until the pouring is finished, and then the steamed stuffed bun main body is tilted in the opposite direction to return to the original position. In the whole charging process, the steamed stuffed bun main body 30 completely completes the charging action in the closed space.

Claims (6)

1. A charging system for a metallurgical furnace, characterized in that: the electric steamed stuffed bun comprises a fixed support frame (3), an electric steamed stuffed bun (1) arranged on the fixed support frame (3), a cover arranged on an outer layer smoke hood (4) above the fixed support frame (3), a hoisting device for hoisting the electric steamed stuffed bun (1) into the outer layer smoke hood (4) and a metallurgical furnace at least partially arranged in the outer layer smoke hood (4), wherein a furnace mouth of the metallurgical furnace is arranged in the outer layer smoke hood (4) and corresponds to the electric steamed stuffed bun (1), the electric steamed stuffed bun (1) comprises a hanging bracket (10) which is detachably arranged on the fixed support frame (3), a steamed stuffed bun main body (30) which is rotatably arranged on the hanging bracket (10), an inclined rotating driving piece (20) for driving the steamed stuffed bun main body (30) to incline and a power supply piece (40) for supplying power to the inclined rotating driving piece (20); and the outer layer smoke hood (4) is provided with an entrance for the electric steamed stuffed bun (1) to enter and exit and a cover for controlling the entrance to be opened and closed.

2. The charging system for a metallurgical furnace according to claim 1, wherein: the power supply module (40) is the automatic plug device of remote power supply, its including install in female head (105) on gallows (10) and fixed mounting in public head (104) of female head (105) one side, female head (105) with driving piece (20) electric connection verts, public head (104) include the plug and are used for the flexible extensible member of control plug, plug and external power source electric connection just can correspond under the drive of extensible member and insert and locate in female head (105).

3. Metallurgical furnace according to claim 1, characterized in that: the power supply assembly (40) is a low-voltage power supply assembly and comprises a low-voltage power supply device used for feeding the fixed support frame (3), a conductive device arranged on the hanging frame (10) and a voltage boosting device arranged on the hanging frame (10), wherein the conductive device is electrically connected with the voltage boosting device, and the voltage boosting device is electrically connected with the tilting driving piece (20).

4. The charging system for a metallurgical furnace according to claim 1, wherein: the hanger (10) comprises a cross beam (101) and a hanger rod (102) installed on the cross beam (101), protruding portions (106) are respectively arranged at two ends of the cross beam (101), a limiting groove (31) used for limiting the movement of the cross beam (101) is formed in the top of the fixed support frame (3), and the protruding portions (106) can be correspondingly lapped in the limiting groove (31).

5. The charging system for a metallurgical furnace according to claim 5, wherein: the suspension rod (102) is at least two hinged rods (103) which are sequentially hinged end to end, wherein the hinged rod (103) located at the top is fixedly connected to the cross beam (101), and at least one hinged rod (103) in the adjacent hinged rods (103) which are mutually hinged is provided with a limiting part (1031) used for limiting the rotating angle of the hinged rod (103).

6. The charging system for a metallurgical furnace according to claim 5, wherein: the lifting ring (108) is arranged on the cross beam (101) and used for lifting, and the lifting ring (108) is a lifting ring (108) located in the center of the cross beam (101) or a plurality of lifting rings (108) distributed on two sides of the cross beam (101).

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