CN111254241A - Steel slag dry-type treatment equipment and operation method thereof - Google Patents
Steel slag dry-type treatment equipment and operation method thereof Download PDFInfo
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- CN111254241A CN111254241A CN202010153634.6A CN202010153634A CN111254241A CN 111254241 A CN111254241 A CN 111254241A CN 202010153634 A CN202010153634 A CN 202010153634A CN 111254241 A CN111254241 A CN 111254241A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/10—Slag pots; Slag cars
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The invention provides a steel slag dry-type treatment device and an operation method thereof, wherein the steel slag dry-type treatment device comprises the following steps: the method is characterized in that the steel slag and molten steel in a steel slag ladle are different in density, the steel slag ladle is automatically layered in the transportation process, the upper layer is liquid steel slag, the lower layer is molten steel taken out at the steelmaking end point, the heavy slag (a mixture of the steel slag and the molten steel) is directly injected after the light slag (the steel slag) is injected and treated at the same station, the light slag is low in density, flies far and falls into a light slag receiver, the heavy slag is high in density, is cooled quickly and is easy to form nodules, a scattering mechanism is arranged to shovel off the nodules, steel blocks with the nodules directly fall into the heavy slag receiver, mixed slag is between the heavy slag and the light slag and falls into a mixed slag receiver, the heavy slag is high in grade, and is directly returned to the furnace for steelmaking, the light slag is completely uniform in steel slag particles, is round and high in hardness, and can be used for powder making, brick making and sand making, the mixed slag is fed into a rod mill for purification, the.
Description
Technical Field
The invention relates to the technical field of liquid molten steel slag treatment in metallurgical industry, in particular to steel slag dry-type treatment equipment and an operation method thereof.
Background
The urban and rural construction department published GBT51387-2019 technical Standard for Steel slag treatment and comprehensive utilization in 2019, and the Standard summarizes the steel slag treatment process into five major categories in sequence: 1 is a pool hot closed process (semi-dry process); 2 is a hot pressing and sealing method (semi-dry method); 3, a wind embrittlement method (divided into a full dry method and a semi-dry method); 4 is a drum method (wet washing method); 5, a water-pouring method with irrigation (semidry method); outside the standard, hot pour methods are still in great use.
Whether "wet" or "semi-dry", the cooling medium is liquid "water", which is a major source of secondary pollution: the wet (hot) water vapor generated in the operation site and the dust wrapped in the wet (hot) water vapor rise to generate serious dust, which causes corrosion and pollution to equipment and plants and worsens the regional environment.
Disclosure of Invention
In view of the above-mentioned problems, a dry treatment apparatus for steel slag and a method for operating the same are provided.
The technical means adopted by the invention are as follows:
a steel slag dry treatment apparatus comprising:
the automatic trolley is arranged on the conveying track and conveys the steel slag bag loaded above the automatic trolley along the track;
the tundish is fixedly arranged below the elevation of the automatic trolley;
the water gap is arranged at the front lower part of the tundish;
the high-pressure air nozzle is fixed right below the tundish;
the scattering machine is fixed on one side of the lower part of the tundish, and the scattering part acts on the inner part of the tundish;
the slag receiver is arranged at the lower part right in front of the water gap and used for collecting the discharged steel from the water gap; and
the cold slag conveyor is fixed right below the slag receiver and is used for conveying the steel slag discharged by the slag receiver;
the included angle between the fixed form of the water gap and the horizontal line is α, and the numerical range of the included angle α is between 5 and 20 degrees;
the slag receiving device is in a plurality of partition type splicing forms, and a heavy slag receiving device, a mixed slag receiving device and a light slag receiving device are sequentially arranged from front to back;
the lower part of the slag receiver is a cone part, and an air spray pipe 9 is arranged on the inner wall of the bottom part of the cone;
the heavy slag conveyor is connected with the steel slag block bin;
the slag mixing conveyor is connected with the rod mill;
the light slag conveyor is connected with the light slag bin.
Further, in the above-mentioned case,
the scattering machine includes:
a motor for providing a driving force to the motor,
a speed reducer connected with the output end of the motor,
an eccentric wheel fixed at the output shaft end of the speed reducer,
a link mechanism hinged to the eccentric wheel through a rotating shaft and capable of realizing up-and-down reciprocation of the end part, an
A shovel head fixed at the end part of the shovel head link mechanism.
Further, in the above-mentioned case,
refractory materials are laid in the tundish and the water gap, the inner surface of the slag receiver is laid with high-temperature resistant wear-resistant paint and a tortoise shell net.
Further, in the above-mentioned case,
the automatic trolley for transporting the steel slag ladle is provided with a locking mechanism at the bottom, a buckle structure is arranged at the upper part, when the steel slag ladle is hung on the automatic trolley and conveyed to a tipping station, the locking mechanism at the bottom is locked when the tipping operation is started, the upper buckle mechanism acts to lock the steel slag ladle, the tipping operation of the steel slag ladle is automatically started, the flowing speed of the steel slag ladle tipping the steel slag is realized by a variable frequency speed regulating mechanism.
An operation method of a steel slag dry treatment device comprises the following steps:
step one, conveying a steel slag ladle,
the liquid steel slag is contained in the steel slag ladle, the automatic trolley carries the steel slag ladle to automatically run from the converter to a tipping station, and the running time of the automatic trolley is more than or equal to the automatic layering time of the steel slag and the molten steel;
step two, the steel slag ladle is overturned,
the automatic trolley is transported to a tipping station, the bottom of the steel slag ladle is locked by an automatic tipping mechanism on the automatic trolley, an upper trunnion buckles the automatic tipping steel slag ladle, and the molten steel slag is tipped into a tundish;
because the tundish and the horizontal line form a certain included angle α, the liquid steel slag flows out through the water gap under the action of natural gravity, the high-pressure nozzle blows air, and under the action of the blowing and cutting of the high-pressure nozzle, the liquid slag flowing out of the water gap is cut into particles which fly out along with the blowing air flow in a parabolic track;
at the moment, the upper layer of light slag in the steel slag ladle playing a role in heat preservation is equivalent to protective slag for the lower layer of molten steel, and as the steel slag on the upper layer of the steel slag ladle is overturned and poured out, the surface of the molten steel is directly exposed in the ambient air, the temperature of the molten steel is gradually reduced, the viscosity is increased, the operation time is saved, the temperature reduction speed of the molten steel is reduced, and after the light slag is blown, heavy slag air blowing is carried out on the residual bottom molten steel in the steel slag ladle at the same station; only the blowing parameters are changed without changing the blowing station; distinguishing heavy slag from light slag by providing a monitoring picture and a signal by a high-temperature industrial monitor;
thirdly, blowing the heavy slag with air,
when the heavy slag air is blown, the light slag blowing operation time is already passed, the temperature of a steel ladle and molten steel is reduced at the moment, the 'nodulation' phenomenon can be generated, the scattering machine works at the moment, the shovel arm at the front end performs reciprocating telescopic motion, and the 'nodulation' steel blocks are shoveled down to prevent the 'nodulation' steel blocks from being coagulated into large blocks; the steel blocks scattered under the shovel directly fall into the heavy slag receiver, and in the process, part of small heavy slag particles fly out and fall into the slag mixing receiver;
because the density of the molten steel is far higher than that of the steel slag and the blowing distances of the steel slag are slightly different due to different sizes of the steel slag, heavy slag falls into the heavy slag receiver, light slag falls into the light slag receiver, and the light slag, the heavy slag and the mixture fall into the mixed slag receiver according to the physical properties of the heavy slag receiver and the light slag;
step four, conveying and treating the steel slag,
a cold slag conveyor is arranged below the heavy slag receiver and directly conveys the heavy slag to a steel block outward transportation bin;
the mixture of heavy slag and light slag collected by the slag mixing and receiving device is conveyed to a rod mill by a slag mixing conveyor, and is processed by the rod mill to separate steel slag particles and heavy slag powder, the steel slag particles have high grade and can be directly returned to a furnace for steelmaking, the heavy slag powder can be returned to a sintering pellet, and the whole process from high-temperature liquid one-step treatment of smelting steel slag to normal-temperature steel slag iron picking and tailing separation is completed; and conveying the light slag collected by the light slag receiver to a light slag bin by a light slag conveyor.
Compared with the prior art, the process route of the invention adopting the technical scheme is reasonable, the defects of a wet method and a semi-dry method which use water as a cooling medium are overcome, the system has a simple structure, the route is clear, the production period is short, 3-4 tons of slag can be processed every minute, the occupied land is greatly saved, the hydraulic gelation strength of light slag is improved, steel blocks and granular steel separated from heavy slag are high in grade, the heavy slag can be directly returned to a furnace for steelmaking, and the heavy slag powder separated from a rod mill is directly returned to sintered pellets.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic process flow diagram of an embodiment of the steel slag dry treatment and production method of the present invention.
FIG. 2 is a schematic view of the structure of the steel slag ladle locked by the automatic trolley.
FIG. 3 is a schematic view of the structure of the scattering machine.
FIG. 4 is a sectional view taken along line A-A in FIG. 1, which is a schematic view of a high-temperature-resistant, abrasion-resistant and impact-resistant structure of the slag receiver.
In the figure: 1. the device comprises an automatic trolley, 2, a steel slag ladle, 3, a tundish, 4, a water gap, 5, a high-pressure air nozzle, 6 a breaker, 7-1 of a heavy slag receiver, 7-2 of a mixed slag receiver, 7-3 of a light slag receiver, 8-1 of a heavy slag conveyor, 8-2 of a mixed slag conveyor, 8-3 of a light slag conveyor, 9 of an air spray pipe, 10 of a steel block bin, 11 of a rod mill, 12 of a light slag bin, 13 of a high-temperature industrial monitor;
101. a trolley bottom locking mechanism 102, a steel slag ladle bottom ring 103, a trolley upper trunnion locking mechanism 104 and a steel slag ladle trunnion shaft;
61. the device comprises a motor 62, a speed reducer 63, an eccentric wheel 64, a connecting rod mechanism 65 and a shovel head;
71. the slag receiver base materials Q235C and 72, the anchoring center line 73, high-temperature-resistant ceramic wear-resistant materials 74 and an anchoring piece.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in FIG. 1, the present invention provides a steel slag dry treatment apparatus, comprising:
the slag mixer comprises an automatic trolley 1 which is arranged on a conveying track and used for conveying a steel slag ladle 2, a tundish 3 which is fixed below the elevation of the automatic trolley 1, a water gap 4 which is fixed at the front lower part of the tundish 3, a high-pressure air nozzle 5 which is fixed at the right lower part of the tundish 3, a breaker 6 which is fixed at one side of the lower part of the tundish 3, a slag receiver 7 which is positioned at the right lower part of the water gap 4, a cold slag conveyor 8 which is fixed at the right lower part of the slag receiver 7, a fixed form of the water gap 4 and a horizontal line form a certain included angle α with the numerical range of 5-20 degrees, the lower bottom surface of the tundish 3 and the horizontal line form a certain included angle which is the same as that between the water gap 4 and the horizontal line, a high-pressure air nozzle 5 and the horizontal line form a certain included angle β, a numerical range of β is between 5-20 degrees, the slag receiver 7 is in a plurality of partition type splicing forms, the cold slag receiver 7-1 is connected with a slag mixer 7-2 and a light slag conveyor 7-3, a slag receiver 8 is connected with a light slag conveyor, a slag mixer, a light slag receiver 8-8 and a light slag-8, a slag-light slag-conveyor, a slag-light slag-light slag-light-slag-light slag-:
1) the liquid steel slag contained in the steel slag ladle 2 contains molten steel brought out during slag skimming at the steelmaking end (for example, molten steel which is about 30 percent of the total amount of the steel slag can be brought out during slag skimming at the stainless steel smelting end), the automatic trolley carries the steel slag ladle 2 to automatically travel from the converter to a tipping station, a certain time is needed, the steel slag and the molten steel are automatically layered during the traveling of the trolley due to the difference of the densities of the molten steel and the steel slag, the molten steel is precipitated at the bottom of the steel slag ladle 2, the steel slag floats on the upper layer of the steel slag ladle 2, the steel slag ladle 2 containing the liquid steel slag is conveyed to the tipping station through the automatic conveying trolley 1, the steel slag ladle is locked by an automatic tipping mechanism on the automatic trolley to automatically tip the steel slag ladle 2, the molten steel slag is tipped into a tundish 3, the liquid steel slag flows out through a water gap 4 under the action of natural gravity due to a certain included angle α between the tundish 3 and a horizontal line, and the liquid steel slag (namely light slag) flowing out of the water gap 4 is cut into particles and is blown out along with a parabolic trajectory due to a small flying distance (relative to the molten steel slag);
2) the upper layer of light slag in the steel slag ladle 2 is equivalent to protective slag (playing a role in heat preservation) for the lower layer of molten steel, and as the steel slag on the upper part of the steel slag ladle 2 is overturned and poured out, the surface of the molten steel is directly exposed in the ambient air, the temperature of the molten steel is gradually reduced, the viscosity is increased, the operation time is saved, the temperature reduction speed of the molten steel is reduced, and after the light slag is blown, the air blowing is carried out on the residual bottom molten steel (including part of the steel slag which cannot flow out, and at this time, the mixture of the residual molten steel and the steel slag is called as heavy slag) in the steel; at the moment, only the blowing parameters are changed without changing the blowing station, the blowing parameters are changed, and a monitoring picture and signals are provided by a high-temperature industrial monitor; the time consumption is shortest, the cooling speed of the molten steel is slowest, and the remaining molten steel is most favorable for keeping the fluidity;
3) when heavy slag is injected, the operation time of light slag injection is already passed, the temperature of a steel ladle and molten steel is reduced at the moment, the phenomenon of accretion can be generated, the scattering machine 6 works at the moment, the shovel arm at the front end performs reciprocating telescopic motion, and the accreted steel blocks are shoveled down (the granularity of the steel blocks is about 60-100 mm) to be prevented from being coagulated into large blocks; the steel blocks shoveled by the scattering machine 6 directly fall into the heavy slag receiver 7-1, and in the process, a part of heavy slag small particles fly out and fall into the slag mixing receiver 7-2;
4) because the density of the molten steel is far higher than that of the steel slag, the blowing distance of the heavy slag is closer than that of the light slag; because the density of the light slag is small, the spraying flying distance is long, the density of the heavy slag is high, and the spraying flying distance is short, the heavy slag falls into the slag receiver 7-1, the light slag falls into the slag receiver 7-3, and the light slag, the heavy slag and the mixture fall into the slag receiver 7-2;
5) a cold slag conveyor 8-1 is arranged below the heavy slag receiver 7-1, and heavy slag (almost pure steel blocks) is directly conveyed to a steel block outward transportation bin; the mixture of heavy slag and light slag collected by the slag mixing and receiving device 7-2 is conveyed to a rod mill 10 (forming secondary processing of steel slag) by a slag mixing conveyor 8-2, and is processed by the rod mill 10 to separate steel slag particles and heavy slag powder, the grade of the steel slag particles is high, the steel slag particles can be directly returned to a furnace for steelmaking, the heavy slag powder can be returned to a sintering pellet, and the full-process processing of smelting steel slag from high-temperature liquid state primary processing to normal-temperature steel slag iron picking and tailing separation is completed;
further, as shown in fig. 3,
the scattering machine 6 includes:
a motor 61 for providing a driving force to the motor,
a speed reducer 62 connected with the output end of the motor,
an eccentric wheel 63 fixed on the output shaft end of the speed reducer 62,
a link mechanism 64 hinged to the eccentric wheel 63 through a rotating shaft and capable of reciprocating up and down at its end, an
A blade 65 fixed to an end of the blade linkage 64.
Further, as shown in fig. 4,
refractory materials are laid in the tundish 3 and the water gap 4, the inner surface of the slag receiver 7 is laid with high-temperature resistant wear-resistant paint and a tortoise shell net.
Further, as shown in fig. 2,
the automatic trolley 1 for transporting the steel slag ladle 2 is provided with a locking mechanism at the bottom and a buckle structure at the upper part, when the steel slag ladle 2 is hung on the automatic trolley 1 to be conveyed to a tipping station, the locking mechanism at the bottom locks when the tipping operation is started, the buckle mechanism at the upper part acts to lock the steel slag ladle 2, the tipping operation of the steel slag ladle 2 is started automatically, and the flowing speed of the steel slag ladle 2 for tipping the steel slag is realized by a variable frequency speed regulating mechanism.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A steel slag dry treatment apparatus, characterized by comprising:
an automatic trolley (1) which is arranged on the conveying track and conveys the steel slag ladle (2) loaded above the automatic trolley along the track;
the tundish (3) is fixedly arranged below the elevation of the automatic trolley (1);
a water gap (4) arranged at the front lower part of the tundish (3);
a high-pressure air nozzle (5) fixed right below the tundish (3);
the scattering machine (6) is fixed on one side of the lower part of the tundish (3), and the scattering part acts on the inner part of the tundish (3);
the slag receiver (7) is arranged at the lower part right in front of the water gap (4) and is used for collecting the water gap (4) and discharging steel; and
the cold slag conveyor (8) is fixed right below the slag receiver (7) and is used for conveying the steel slag discharged by the slag receiver (7);
the included angle between the fixed form of the water gap (4) and the horizontal line is α, and the numerical range of the included angle α is between 5 and 20 degrees;
the included angle between the lower bottom surface of the tundish (3) and the horizontal line is α, the included angle between the high-pressure air nozzle (5) and the horizontal line is β, and the numerical range of the included angle β is between 5 and 20 degrees;
the slag receiver (7) is in a plurality of partition type phase splicing forms, and the heavy slag receiver (7-1), the mixed slag receiver (7-2) and the light slag receiver (7-3) are sequentially arranged from front to back;
the cold slag conveyor (8) is matched with the slag receiver (7) in sequence, and the heavy slag conveyor (8-1), the slag mixing conveyor (8-2) and the light slag conveyor (8-3) are sequentially arranged from front to back;
the lower part of the slag receiver (7) is a cone part, and an air spray pipe (9) is arranged on the inner wall of the bottom part of the cone;
the heavy slag conveyor (8-1) is connected with the steel slag block bin (10);
the slag mixing conveyor (8-2) is connected with the rod mill (11);
the light slag conveyor (8-3) is connected with the light slag bin (12).
2. The method of operating a steel slag dry treatment plant as claimed in claim 1 comprising the steps of:
step one, conveying a steel slag ladle (2),
the liquid steel slag is contained in the steel slag ladle (2), the automatic trolley (1) bears the steel slag ladle (2) and automatically runs from the converter to a tipping station, and the running time of the automatic trolley (1) is more than or equal to the automatic layering time of the steel slag and the molten steel;
step two, the steel slag ladle (2) is tipped over,
the automatic trolley (1) is transported to a tipping station, the bottom of the steel slag ladle (2) is locked by an automatic tipping mechanism on the automatic trolley (1), an upper trunnion buckles the automatic tipping steel slag ladle (2), and the molten steel slag is tipped into the tundish (3);
because the tundish (3) and the horizontal line form a certain included angle α, the liquid steel slag flows out through the water gap (4) under the action of natural gravity, the high-pressure nozzle (5) blows air, and under the action of blowing and cutting of the high-pressure nozzle (5), the liquid steel slag flowing out of the water outlet (4) is cut into particles and flies out along with the blowing air flow in a parabolic track;
at the moment, the light slag on the upper layer in the steel slag ladle (2) playing a role in heat preservation is equivalent to protective slag for the molten steel on the lower layer, the steel slag on the upper part of the steel slag ladle (2) is overturned and poured out, the surface of the molten steel is directly exposed in the ambient air, the temperature of the molten steel is gradually reduced, the viscosity is increased, the operation time is saved, the temperature reduction speed of the molten steel is reduced, and after the light slag is blown, the heavy slag air blowing is carried out on the residual molten steel at the bottom in the steel slag ladle (2) at the same station; at the moment, only the blowing parameters are changed without changing the blowing station, and the blowing parameters are changed by providing a monitoring picture and a signal by a high-temperature industrial monitor (13);
thirdly, blowing the heavy slag with air,
when the heavy slag air is blown, the light slag blowing operation time is already passed, the temperature of the steel ladle and the molten steel is reduced at the moment, the 'nodulation' phenomenon can be generated, the scattering machine (6) works at the moment, the shovel arm at the front end performs reciprocating telescopic motion, and the 'nodulation' steel blocks are shoveled down to prevent the steel blocks from being coagulated into large blocks; the steel blocks shoveled by the scattering machine (6) directly fall into the heavy slag receiving device (7-1), and in the process, a part of heavy slag small particles fly out and fall into the slag mixing and receiving device (7-2);
because the density of the molten steel is far higher than that of the steel slag and the blowing distances of the steel slag are slightly different due to different sizes of the steel slag, heavy slag falls into a heavy slag receiver (7-1), light slag falls into a light slag receiver (7-3), and light slag, heavy slag and a mixture fall into a slag mixing receiver (7-2) according to the physical properties of the steel slag;
step four, conveying and treating the steel slag,
a cold slag conveyor (8-1) is arranged below the heavy slag receiver (7-1) and directly conveys the heavy slag to a steel block outward transport bin;
the mixture of heavy slag and light slag collected by the slag mixing and receiving device (7-2) is conveyed to a rod mill (10) by a slag mixing conveyor (8-2), and is processed by the rod mill (10), slag steel particles and heavy slag powder are separated, the grade of the slag steel particles is high, the slag steel particles can be directly returned to a furnace for steelmaking, the heavy slag powder can be returned to a sintering pellet, and the whole process of processing the smelting steel slag from high-temperature liquid state to normal-temperature steel slag iron picking and tailing separation is completed; the light slag collected by the light slag receiver (7-3) is conveyed to the light slag bin (12) by the light slag conveyor (8-3).
3. The steel slag dry treatment apparatus as claimed in claim 1,
the scattering machine (6) comprises:
a motor (61) for providing a driving force,
a speed reducer (62) connected with the output end of the motor,
an eccentric wheel (63) fixed at the output shaft end of the speed reducer (62),
a link mechanism (64) hinged on the eccentric wheel (63) through a rotating shaft and capable of realizing the up-and-down reciprocating of the end part, an
A shovel head (65) fixed at the end of the shovel head link mechanism (64).
4. The steel slag dry treatment apparatus as claimed in claim 1 or 2,
refractory materials are laid in the tundish (3) and the water gap (4), and high-temperature resistant wear-resistant paint and a tortoise shell net are laid on the inner surface of the slag receiving device (7).
5. The steel slag dry treatment apparatus as claimed in claim 4,
transport automatic trolley (1) of cinder ladle (2), the bottom is equipped with blocked mechanical system, upper portion is equipped with buckle structure, hang when cinder ladle (2) and put in automatic trolley (1) and carry the station of tumbling, when beginning the operation of tumbling, bottom blocked mechanical system shutting, upper portion buckle mechanism moves, pin cinder ladle (2), the operation of tumbling of automatic cinder ladle (2) that begins, cinder ladle (2) are emptyd the speed of flow of slag, rely on frequency conversion speed control mechanism to realize automatic adjustment.
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| CN202010153634.6A CN111254241A (en) | 2020-03-06 | 2020-03-06 | Steel slag dry-type treatment equipment and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010153634.6A CN111254241A (en) | 2020-03-06 | 2020-03-06 | Steel slag dry-type treatment equipment and operation method thereof |
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| CN111254241A true CN111254241A (en) | 2020-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028407A (en) * | 2021-03-19 | 2021-06-25 | 曹金超 | Industrial incineration line feeding device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2714166Y (en) * | 2004-06-07 | 2005-08-03 | 朱里仁 | Drum slag cooling machine with screening function |
| CN102586517A (en) * | 2012-04-05 | 2012-07-18 | 山西太钢不锈钢股份有限公司 | Stainless steel slag treatment method |
| CN103014201A (en) * | 2013-01-18 | 2013-04-03 | 北京科技大学 | Device and method for gas-solid ejection and granulation of molten blast furnace slags |
| CN110643758A (en) * | 2019-11-14 | 2020-01-03 | 南京鹏昆环保科技有限公司 | Resourceful treatment and heat energy recovery method and device for high-temperature liquid steel slag |
-
2020
- 2020-03-06 CN CN202010153634.6A patent/CN111254241A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2714166Y (en) * | 2004-06-07 | 2005-08-03 | 朱里仁 | Drum slag cooling machine with screening function |
| CN102586517A (en) * | 2012-04-05 | 2012-07-18 | 山西太钢不锈钢股份有限公司 | Stainless steel slag treatment method |
| CN103014201A (en) * | 2013-01-18 | 2013-04-03 | 北京科技大学 | Device and method for gas-solid ejection and granulation of molten blast furnace slags |
| CN110643758A (en) * | 2019-11-14 | 2020-01-03 | 南京鹏昆环保科技有限公司 | Resourceful treatment and heat energy recovery method and device for high-temperature liquid steel slag |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028407A (en) * | 2021-03-19 | 2021-06-25 | 曹金超 | Industrial incineration line feeding device |
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Application publication date: 20200609 |