CN112066727B - Metal low-oxygen smelting system and low-oxygen smelting method - Google Patents

Metal low-oxygen smelting system and low-oxygen smelting method Download PDF

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Publication number
CN112066727B
CN112066727B CN202010991859.9A CN202010991859A CN112066727B CN 112066727 B CN112066727 B CN 112066727B CN 202010991859 A CN202010991859 A CN 202010991859A CN 112066727 B CN112066727 B CN 112066727B
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bin
vacuum
closable
metal
frame
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CN112066727A (en
Inventor
鲁志昂
李勇
汤文远
孙阳春
夏莫逆
殷俊
黄涛
邓黎
刘仕会
邓飞飞
付忠菊
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Zhuzhou Torch Industrial Furnace Co ltd
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Zhuzhou Torch Industrial Furnace Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/0806—Charging or discharging devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/0806—Charging or discharging devices
    • F27B2014/0812—Continuously charging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses a metal low-oxygen smelting system which comprises a material conveying belt, a rotary conveying device, an automatic vacuum feeding device and a smelting furnace, wherein the rotary conveying device is rotatably connected with the material conveying belt and the automatic vacuum feeding device respectively, a closable bin is arranged outside the rotary conveying device, the automatic vacuum feeding device comprises a vacuum bin and a manipulator, the vacuum bin is connected with the smelting furnace, an independent space capable of being communicated or separated is formed between the vacuum bin and the smelting furnace, the outer side of the vacuum bin is connected with the closable bin, an independent space capable of being communicated and separated is also formed between the vacuum bin and the closable bin, and the vacuum bin and the closable bin are vacuumized. The invention also discloses a metal low-oxygen smelting method. The metal low-oxygen smelting system and the low-oxygen smelting method disclosed by the invention enable a low-oxygen environment to be formed in the smelting furnace, reduce the formation of the upper oxidation slag of metal in the smelting furnace and improve the economic benefit; the requirement of manual slag raking is reduced; the formation of oxidation slag is reduced, and the environmental pollution is further reduced.

Description

Metal low-oxygen smelting system and low-oxygen smelting method
Technical Field
The invention relates to the technical field of metal smelting, in particular to a metal low-oxygen smelting system and a low-oxygen smelting method.
Background
In the production process of smelting and casting metals (such as zinc, aluminum and magnesium), when an induction furnace is smelted in a high-oxygen environment, due to a large amount of oxygen in the furnace, oxide slag is generated on the upper layer surface of a solution in the process that the metals are smelted into molten liquid in the furnace, the oxide slag on the upper layer of the metals is thicker and thicker along with the lengthening of smelting time, a specially-assigned person needs to be arranged to uninterruptedly use a steel rake to rake out dross from the induction furnace, the dross which is far away from a dross raking port is time-consuming and labor-consuming, the dross can not be raked out, the steel rake is easy to extend into the molten metal below the dross in the using process, a large amount of metals are taken out, and waste is caused.
Therefore, the existing smelting technology has three problems: firstly, the metal oxidation is serious, the produced metal has low purity, and data investigation shows that approximately three million tons of oxidation slag can be generated if metal with an annual output value of 1 million tons is smelted, so that the economic benefit is seriously influenced; secondly, the labor cost is increased, and the smelting purity is reduced; thirdly, because the upper layer of the metal is oxidized seriously, the smoke generated by the oxidation of the metal can form a large amount of dust, so that the dust is large in the existing metal smelting process, the space and environment quality is poor, and the environmental pollution is serious.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present invention provide a metal low-oxygen smelting system and a metal low-oxygen smelting method with less oxidizing slag to improve economic benefit, low labor cost and less environmental pollution.
The technical scheme of the invention is realized as follows:
the utility model provides a metal low oxygen melting system, includes material conveyer belt, rotary conveyor, vacuum automatic material conveying device and locates the smelting furnace under the vacuum automatic material conveying device, rotary conveyor rotationally respectively with material conveyer belt with vacuum automatic material conveying device connects, rotary conveyor is provided with closeable storehouse outward, vacuum automatic material conveying device includes the vacuum storehouse and locates manipulator in the vacuum storehouse, the vacuum storehouse with the smelting furnace is connected and forms the independent space that can feed through or cut off between the two, the outside in vacuum storehouse with can close the storehouse and connect and also form the independent space that can feed through and cut off between the two, the vacuum storehouse with can close the storehouse evacuation.
Preferably, the vacuum bin is arranged above the smelting furnace and is separated from the smelting furnace, the vacuum bin is provided with a feeding hole, a discharging hole, a feeding door for closing or opening the feeding hole and a partition door for closing or opening the discharging hole, the feeding hole is communicated with the outside, the discharging hole is communicated with the smelting furnace, and the manipulator is used for grabbing and transferring materials outside the feeding hole to the discharging hole.
Preferably, the feed inlet is opened in the lateral wall of vacuum chamber, and with the export intercommunication in the storehouse can be sealed of outside, can seal the storehouse the entry with the material conveyer belt is just to setting up.
Preferably, the feeding door and the partition door are movably connected to the vacuum chamber, respectively.
Preferably, the manipulator comprises a lifting frame, a guide post, a lifter and a gripper, the guide post is vertically arranged in the vacuum chamber, one end of the lifter is connected to the vacuum chamber, the other end of the lifter is connected to the lifting frame and used for driving the lifting frame to move up and down along the guide post, and the gripper is rotationally connected to the lifting frame.
Preferably, the rotary conveying device comprises a track frame, a sliding material pushing cart, a driver, a rotating mechanism and a conveying mechanism, wherein the driver is connected with the sliding material pushing cart, the sliding material pushing cart is arranged on the track frame and can be pushed by the driver to move along the track frame, the rotating mechanism is connected to the sliding material pushing cart, the conveying mechanism is connected to the rotating mechanism, and the rotating mechanism drives the conveying mechanism to rotate.
Preferably, conveying mechanism includes the mount and locates conveying chain on the mount, be provided with on the mount with the chain clamp plate of conveying chain butt, the both ends fixedly connected with of clamp plate scrapes the sediment piece, it keeps away from to scrape the sediment piece the clamp plate one end with conveying chain butt.
Preferably, the sliding material pushing trolley comprises a frame, a push plate fixedly connected to the end of the frame and wheels arranged at the bottom of the frame, the driver is connected with the push plate and used for driving the frame to move, and the push plate pushes materials on the track frame to move to a specified place.
Preferably, a gap is formed between the bottom of the push plate and the track frame, and one end, which is abutted to the track frame, of the push plate is bent upwards.
A metal low-oxygen smelting method comprises the following steps,
s1, transferring metal ingots to be smelted to a rotary conveying device from a material conveying belt;
s2, opening an inlet of a closable bin, and rotating the rotary conveying device to connect metal ingots to be smelted on the material conveying belt into the closable bin;
s3, sealing the closable bin and vacuumizing;
and S4, rotating the rotary conveying device by a rotation angle, opening an outlet of the closable bin, simultaneously opening a feed inlet of the vacuum bin, grabbing metal ingots to be smelted into the vacuum bin from the closable bin by a manipulator, and vacuumizing the vacuum bin.
According to the metal low-oxygen smelting system and the metal low-oxygen smelting method provided by the embodiment of the invention, the sealable bin and the vacuum bin which form independent spaces are vacuumized, so that oxygen entering the smelting furnace in the process of conveying metal ingots to be smelted is greatly reduced, a low-oxygen environment can be formed in the smelting furnace, the formation of upper-layer oxidation slag of metal in the smelting furnace is effectively reduced, and the economic benefit is effectively improved; meanwhile, the requirement of manual slag raking is reduced, the labor cost is reduced, and the metal waste caused by the fact that the steel rake extends to the position below the scum in the manual treatment process is reduced; and because the formation of oxidation slag is reduced, the generation of dust in the smelting process is reduced, and the environmental pollution is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a metal low-oxygen smelting system provided by the invention;
FIG. 2 is a partial block diagram of the vacuum and enclosure compartments shown in FIG. 1;
FIG. 3 is a perspective view of the rotary transport device shown in FIG. 1;
FIG. 4 is a side view of the rotary transport device shown in FIG. 3;
FIG. 5 is a top view of the rotary transport device shown in FIG. 3;
FIG. 6 is a schematic structural view of the vacuum automatic charging device shown in FIG. 1;
FIG. 7 is a schematic view of a portion of the vacuum automatic charging device shown in FIG. 6;
FIG. 8 is a schematic structural view of the guide post shown in FIG. 7;
FIG. 9 is a flow chart of a metal low oxygen smelting method provided by the invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a metal low-oxygen smelting system according to the present invention; fig. 2 is a partial structural view of the vacuum chamber and the closed chamber shown in fig. 1. The metal low-oxygen smelting system comprises a material conveying belt 1, a rotary conveying device 3, a vacuum automatic feeding device 5 and a smelting furnace 10 arranged below the vacuum automatic feeding device 5. The rotary conveying device 3 is rotatably connected with the material conveying belt 1 and the vacuum automatic feeding device 5 respectively, a closable bin 7 is arranged outside the rotary conveying device 3, the vacuum automatic feeding device 5 comprises a vacuum bin 51 and a manipulator 53 arranged in the vacuum bin 51, the bottom of the vacuum bin 51 is connected with the smelting furnace 10, a communicated or separated independent space is formed between the vacuum bin and the smelting furnace, the outer side of the vacuum bin 51 is connected with the closable bin 7, a communicated and separated independent space is also formed between the vacuum bin and the closable bin 7, the vacuum bin 51 and the closable bin 7 are vacuumized, oxygen entering the smelting furnace in the process of conveying metal ingots to be smelted is greatly reduced by vacuumizing the closable bin 7 and the vacuum bin 51 which form independent spaces, so that a low-oxygen environment is formed in the smelting furnace 10, the formation of metal upper oxidation slag in the smelting furnace 10 is effectively reduced, and economic benefits are effectively improved; meanwhile, the requirement of manual slag raking is reduced, the labor cost is reduced, and the metal waste caused by the fact that the steel rake extends to the position below the scum in the manual treatment process is reduced; and because the formation of oxidation slag is reduced, the generation of dust in the smelting process is reduced, and the environmental pollution is reduced.
Please refer to fig. 3-5, wherein fig. 3 is a perspective view of the rotary conveying apparatus shown in fig. 1; FIG. 3 is a side view of the rotary transport device shown in FIG. 3; fig. 4 is a plan view of the rotary conveyance device shown in fig. 3. The material conveying belt 1 is used for automatically conveying metal ingots to be smelted to the rotary conveying device 3. The rotary conveying device 3 is arranged in the closable bin 7. The rotary conveying device 3 comprises a conveying mechanism 31, a rotating mechanism 33, a driver 35, a sliding pusher 37 and a track frame 39, wherein the driver 35 is connected with the sliding pusher 37, the sliding pusher 37 is arranged on the track frame 39 and can move along the track frame 39 under the pushing of the driver 35, the rotating mechanism 33 is connected with the sliding pusher 37, the conveying mechanism 31 is connected with the rotating mechanism 33, the rotating mechanism 33 drives the conveying mechanism 31 to rotate, so that the conveying mechanism 31 can rotate in the direction, the material is conveyed from one direction to the other direction to change the conveying path of the material, the rotation is flexible, the material cannot be jammed, and the conveying is smoother; and the materials falling from the conveying mechanism 31 are pushed to an appointed place through the sliding material pushing vehicle 37 so as to be convenient for a manipulator to grab the materials, and the structure is flexible and the working efficiency is high.
The conveying mechanism 31 includes a fixed frame 311 and a conveying chain 313 arranged on the fixed frame 311, and a chain pressing plate 315 abutting against the conveying chain 313 is arranged on the fixed frame 311. The chain pressing plate 315 is arc-shaped, and two ends of the chain pressing plate are bent upwards. Because the conveying chain 313 conveys metal ingots to be in contact with the conveying chain 313 for a long time, metal is adhered to the conveying chain 313, in order to scrape off metal objects on the top of the conveying chain 313, the two ends of the chain pressing plate 315 are fixedly connected with the slag scraping plates 317, one end, far away from the chain pressing plate 315, of the slag scraping plates 317 is in contact with the top of the conveying chain 313 so as to scrape off the metal objects on the conveying chain 313, the metal objects are prevented from influencing the transmission of the conveying chain 313, the conveying smoothness of the conveying chain 313 is effectively improved, and the working efficiency is further improved.
Specifically, in this embodiment, the scraping blade 317 is disposed obliquely, and the oblique direction of the scraping blade 317 is opposite to the moving direction of the conveying chain 313, so that the scraping blade 317 and the conveying chain 313 can better scrape off metal adhered to the conveying chain 313.
The rotating mechanism 33 comprises a worm and gear mechanism 331 and a motor 333 driving the worm and gear mechanism 331 to rotate, the conveying mechanism 31 is connected to a worm wheel of the worm and gear mechanism 331, and specifically, the worm wheel 3311 is connected to the fixing frame 311 of the conveying mechanism 31. The motor 333 drives the worm 3313 of the worm gear mechanism 331 to move, and the worm 3313 drives the worm wheel 3311 to move, so as to drive the fixing frame 311 connected to the worm wheel 3311 to rotate. Specifically, the motor 333 rotates forward and backward to rotate the fixed frame 311 back and forth within a range of 90 ° to change the rotation direction of the fixed frame 311, so that the conveying mechanism 31 changes the direction of conveying the material. The rotating mechanism 33 rotates by 90 degrees and is connected with the material conveying belt 1, and then rotates by 90 degrees and is arranged opposite to the vacuum automatic feeding device 5.
Specifically, in this embodiment, the actuator 35 is a cylinder or an air cylinder. Preferably, in this embodiment, the actuator 35 is a cylinder.
The sliding material pushing cart 37 comprises a frame 371, a push plate 373 fixedly connected to the end of the frame 371, and wheels 375 arranged at the bottom of the frame 371, wherein the driver 35 is connected with the push plate 373 for driving the frame 371 to move, and the push plate 373 pushes the material on the track frame 39 to move to a designated place so that a manipulator can grab the metal ingot from the track frame 39.
Specifically, a gap is formed between the bottom of the push plate 373 and the track frame 39, and one end of the push plate 373, which is abutted to the track frame 39, is bent upward, so that the metal ingot can be pushed more conveniently.
The rail frame 39 comprises two rails 391 arranged at intervals and a material carrying plate 393 connected between the two rails 391, the wheels 375 are arranged on the rails 391, and a gap is arranged between the bottom of the push plate 373 and the material carrying plate 393. Thus, after the ingots conveyed by the conveyor chain 313 fall down to the material-carrying plate 393, the push plate 373 can conveniently push the materials on the material-carrying plate 393 to advance to a designated place for the mechanical hand to grasp.
Fig. 6 is a schematic structural diagram of the vacuum automatic feeding device shown in fig. 1. Vacuum automatic material conveying device 5 includes vacuum storehouse 51 and locates manipulator 53 in the vacuum storehouse 51, vacuum storehouse 51 is located above the smelting furnace 10 and with the smelting furnace 10 is separated and is set up, be provided with feed inlet 511, discharge gate 513 on the vacuum storehouse 51 and be used for sealing or opening the feed door 515 of feed inlet 511 with be used for sealing or opening the wall door 517 of discharge gate 513, feed inlet 511 and external intercommunication, discharge gate 513 with smelting furnace 10 intercommunication, manipulator 53 be used for with the outer material of feed inlet 511 snatchs and moves to discharge gate 513. Through the partition door 517 who sets up, make smelting furnace 10 and feeding region separately set up, form the partition state to form intercommunication and the space of mutual noninterference, reduce oxygen and get into in the smelting furnace 10. When feeding is needed, the feeding door 515 is opened, the manipulator 53 adds the metal ingot to be smelted into the vacuum bin 51 from the feeding hole 511, the feeding door 515 is closed, the vacuum bin 51 is vacuumized, the partition door 517 is opened, the manipulator 53 releases the metal ingot to be smelted and puts the metal ingot into the smelting furnace 10, and the partition door 517 is used for preventing oxygen from entering the smelting furnace 10 in the feeding process, so that the oxygen content in the smelting furnace 10 can be effectively reduced, a low-oxygen environment can be formed in the smelting furnace 10, the formation of metal upper oxidation slag in the smelting furnace 10 can be effectively reduced, and the economic benefit is effectively improved; meanwhile, the requirement of manual slag raking is reduced, the labor cost is reduced, and the metal waste caused by the fact that the steel rake extends to the position below the scum in the manual treatment process is reduced; and because the formation of oxidation slag is reduced, the generation of dust in the smelting process is reduced, and the environmental pollution is reduced.
The outside of the vacuum bin 51 is square and is formed by welding steel plates, and a steel frame is fixed inside the vacuum bin 51 and used for fixing the manipulator 53. A vacuumizing machine is arranged in the vacuum bin 51 and is used for pumping off oxygen in the vacuum bin 51, so that a vacuum environment is formed in the vacuum bin 51, and oxygen entering the vacuum bin 51 during feeding is prevented from entering the smelting furnace 10.
The feed inlet 511 is arranged on the side wall of the vacuum chamber 51 and is opposite to the external rotary conveying device 3. In this way, the rotary conveyor 3 can accurately feed the ingot to be melted into the feed opening 511.
The discharging hole 513 is arranged at the bottom of the vacuum bin 51, the bottom of the vacuum bin 51 is connected with the smelting furnace 10, a manipulator 53 puts metal ingots to be smelted into the smelting furnace 10 from the discharging hole 513, after the metal ingots are put into the smelting furnace 10, the partition door 517 is closed, and the smelting furnace 10 and the vacuum bin 51 form two separated parts.
The feeding door 515 and the partition door 517 are movably connected to the vacuum bin 51, the feeding door 515 and the partition door 517 are translation type automatic induction doors, a sensor on the feeding door 515 senses a metal ingot conveyed by an external rotary conveying device, the feeding door 515 is opened, and when the sensor on the partition door 517 senses the metal ingot clamped by the manipulator 53, the partition door 517 is opened.
Fig. 7 is a schematic view of a portion of the vacuum automatic feeding device shown in fig. 6. The manipulator 53 comprises a lifting frame 531, a guide column 533, a lifter 535 and a hand grip 537, wherein the guide column 533 is vertically arranged in the vacuum bin 51, one end of the lifter 535 is connected to the vacuum bin 51, the other end of the lifter 535 is connected to the lifting frame 531 and used for driving the lifting frame 531 to move up and down along the guide column 533, and the hand grip 537 is rotatably connected to the lifting frame 531. Specifically, in this embodiment, the lifter 535 is an oil cylinder or an air cylinder.
The hand 537 comprises a base 5371 and two symmetrically arranged fingers 5373 which are respectively connected to the base 5371 in a rotating mode, wherein the fingers 5373 rotate to open and close and are used for clamping metal ingots to be smelted. Specifically, the finger 5373 is connected to the base 5371 through a rotating shaft, the rotating shaft is driven by a motor to rotate, the motor is connected with the control host, and the control host controls the motor to act, so that the finger 5373 is controlled to be opened and closed. The base 5371 is connected to the lifting frame 531, and the lifting frame 531 drives the base 5371 to move up and down, so that the hand 537 is driven to move up and down.
A plurality of rolling wheels 5311 are further disposed on two opposite sides of the lifting frame 531, and the rolling wheels 5311 roll on the guide posts 533 to realize movement and guidance of the lifting frame 531.
Fig. 8 is a schematic structural view of the guide post shown in fig. 7. The guide post 533 includes a support post 5331 having a circular cross-section and a rail 5333 having a square cross-section and disposed outside the support post 5331. Specifically, one side of the rail 5333 is connected to the support column 5331, and the rolling wheel 5311 vertically rolls on the rail 5333. The number of the tracks 5333 is two, three rolling wheels 5311 are arranged on each track 5333, the three rolling wheels 5311 are respectively arranged on the other three side surfaces which are not connected with the support column 5331, and the rolling wheels are rolled from three directions, so that the rolling wheels 5311 are effectively prevented from separating from the tracks 5333 from all directions, and the lifting frame 531 can move more stably on the guide column 533.
It should be noted that, in order to enable the lifting frame 531 to move within a preset range on the guide post 533, stoppers connected to the control host are disposed at upper and lower ends of the guide post 533, and when the lifting frame 531 moves up and down and contacts with the two stoppers, the lifting frame 531 stops moving, so as to prevent the impact caused by the over-position movement of the lifting frame 531.
As shown in fig. 2, an inlet of the closable bin 7 is opposite to the material conveying belt 1, an outlet of the closable bin 7 is communicated with the feeding hole 515 of the vacuum bin 51, the discharging hole 513 is closed by the partition door 517, and the inlet and the outlet of the closable bin 7 are also provided with a closed door. And a vacuumizing machine is arranged in the closable bin 7 and is used for vacuumizing the closable bin.
Referring to FIG. 9, a flow chart of a method for smelting metals under low oxygen conditions according to the present invention is shown. The invention also provides a metal low-oxygen smelting method, which comprises the following steps,
and S1, automatically transferring the metal ingot to be smelted to a rotary conveying device 3 from a material conveying belt 1.
Step S2, after the inlet 71 of the closable bin 7 is opened, the rotary conveying device 3 rotates by 90 degrees to connect the metal ingots to be smelted on the material conveying belt 1 into the closable bin 7.
And S3, sealing the inlet 71 and the outlet 73 of the closable bin 7 and vacuumizing.
And S4, rotating the rotary conveying device by 90 degrees, so that the rotary conveying device is opposite to an outlet of the closable bin, a closed door of the outlet of the closable bin is opened, meanwhile, a feed inlet of the vacuum bin is opened, the manipulator grabs a metal ingot to be smelted from a specified place in the closable bin into the vacuum bin, after the vacuum bin is vacuumized, the partition door is opened, the manipulator loosens to place the metal ingot to be smelted into the smelting furnace, the partition door is closed, and meanwhile, nitrogen is introduced into the smelting furnace.
According to the metal low-oxygen smelting system and the metal low-oxygen smelting method provided by the embodiment of the invention, the closable bin and the vacuum bin which form independent spaces are vacuumized, so that oxygen entering the smelting furnace in the process of conveying metal ingots to be smelted is greatly reduced, a low-oxygen environment can be formed in the smelting furnace, the formation of upper-layer oxidation slag of metal in the smelting furnace is effectively reduced, and the economic benefit is effectively improved; meanwhile, the requirement of manual slag raking is reduced, the labor cost is reduced, and the metal waste caused by the fact that the steel rake extends to the position below the scum in the manual treatment process is reduced; and because the formation of oxidation slag is reduced, the generation of dust in the smelting process is reduced, and the environmental pollution is reduced.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (7)

1. A metal low-oxygen smelting system is characterized by comprising a material conveying belt, a rotary conveying device, a vacuum automatic feeding device and a smelting furnace arranged below the vacuum automatic feeding device, wherein the rotary conveying device is rotatably connected with the material conveying belt and the vacuum automatic feeding device respectively, a closable bin is arranged outside the rotary conveying device, the vacuum automatic feeding device comprises a vacuum bin and a manipulator arranged in the vacuum bin, the vacuum bin is connected with the smelting furnace, an independent space capable of being communicated or separated is formed between the vacuum bin and the smelting furnace, the outer side of the vacuum bin is connected with the closable bin, an independent space capable of being communicated and separated is also formed between the vacuum bin and the closable bin, the vacuum bin and the closable bin are vacuumized, the rotary conveying device comprises a track frame, a sliding material pushing vehicle, a driver, a rotating mechanism and a conveying mechanism, the driver with the pusher that slides is connected, the pusher that slides is located on the track frame and can follow under the promotion of driver the track frame removes, rotary mechanism connect in on the pusher that slides, conveying mechanism connect in on the rotary mechanism, by rotary mechanism drives conveying mechanism is rotatory, conveying mechanism includes the mount and locates the conveying chain on the mount, be provided with on the mount with the chain clamp plate of conveying chain butt, the both ends fixedly connected with of clamp plate scrapes the sediment piece, scrape the sediment piece and keep away from the one end of clamp plate with the conveying chain butt, the manipulator includes crane, guide post, riser and tongs, the guide post is vertically located in the vacuum chamber, the one end of riser is connected in vacuum chamber, elevator, the other end of the lifting frame is connected with the lifting frame and used for driving the lifting frame to move up and down along the guide post, the hand grip is rotationally connected to the lifting frame, a plurality of rolling wheels are further arranged on two opposite sides of the lifting frame, and the rolling wheels roll on the guide post to realize the movement and the guidance of the lifting frame.
2. The metal low-oxygen smelting system according to claim 1, wherein the vacuum bin is arranged above the smelting furnace and is separated from the smelting furnace, the vacuum bin is provided with a feeding port, a discharging port, a feeding door for closing or opening the feeding port and a partition door for closing or opening the discharging port, the feeding port is communicated with the outside, the discharging port is communicated with the smelting furnace, and the manipulator is used for grabbing and transferring materials outside the feeding port to the discharging port.
3. The metal low oxygen melting system of claim 2, wherein the feed inlet is open in a side wall of the vacuum chamber and is in communication with an outlet of an external closable chamber, and an inlet of the closable chamber is disposed opposite to the material conveying belt.
4. A metal low oxygen smelting system according to claim 2, wherein the feed doors and the partition doors are each movably connected to the vacuum chamber.
5. The metal low-oxygen smelting system of claim 1, wherein the sliding material pushing trolley comprises a frame, a pushing plate fixedly connected to the end of the frame, and wheels arranged at the bottom of the frame, the driver is connected with the pushing plate and used for driving the frame to move, and the pushing plate pushes the material on the track frame to move to a specified place.
6. The metal low oxygen melting system of claim 5, wherein a gap is provided between the bottom of the push plate and the rail frame, and the end of the push plate abutting against the rail frame is bent upwards.
7. A metal low oxygen smelting method comprising the metal low oxygen smelting system according to any one of claims 1 to 6, characterized by comprising the steps of,
s1, transferring metal ingots to be smelted from a material conveying belt to a rotary conveying device;
s2, opening an inlet of the closable bin, and rotating the rotary conveying device to connect metal ingots to be smelted on the material conveying belt into the closable bin;
s3, sealing the closable bin and vacuumizing;
and S4, rotating the rotary conveying device by a rotating angle, opening an outlet of the closable bin, simultaneously opening a feed inlet of the vacuum bin, grabbing metal ingots to be smelted from the closable bin by a manipulator into the vacuum bin, and vacuumizing the vacuum bin.
CN202010991859.9A 2020-09-18 2020-09-18 Metal low-oxygen smelting system and low-oxygen smelting method Active CN112066727B (en)

Priority Applications (1)

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