CN115161421A - Device capable of processing liquid steel slag forming of electric arc furnace on line - Google Patents
Device capable of processing liquid steel slag forming of electric arc furnace on line Download PDFInfo
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- CN115161421A CN115161421A CN202210765517.4A CN202210765517A CN115161421A CN 115161421 A CN115161421 A CN 115161421A CN 202210765517 A CN202210765517 A CN 202210765517A CN 115161421 A CN115161421 A CN 115161421A
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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
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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
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
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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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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/07—Receptacle features where the slag is treated open to atmosphere
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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
- 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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Abstract
The invention discloses a device capable of processing the liquid steel slag forming of an electric arc furnace on line, which belongs to the technical field of electric arc furnace smelting and steel slag processing, and comprises a buffer slope, a guide slope and a bearing plate, wherein the buffer slope, the guide slope and the bearing plate are all steel blank plates which are arranged in a stacking manner and welded to form a liquid steel slag processing basic device; the upper end of the whole system structure is hermetically covered by a water mist collection warehouse, and steam water mist generated by flushing and blowing steel slag is pumped out and discharged through an air suction pipeline of the collection warehouse.
Description
Technical Field
The invention relates to the technical field of steel smelting, in particular to a device capable of processing the forming of liquid steel slag of an electric arc furnace on line.
Background
In the conventional steel-making process and steel slag treatment technology, in the traditional electric arc furnace steel-making production process flow, when scrap steel is firstly added into a furnace to be smelted to form molten steel, part of high-temperature liquid steel slag in the furnace is required to be discharged into a slag discharging pit. The conventional method for treating the liquid steel slag is to use a slag receiving pot to enter a slag discharging pit for carrying or use a digging machine and a forklift to load high-temperature steel slag on site, and then transfer the steel slag to a steel slag treatment workshop through hoisting for rolling hot braising or hot splashing conversion treatment, so that irregular solid steel slag is preliminarily formed. Finally, the solid steel slag can reach slag particles smaller than 2cm only through the complicated procedures of processing treatment such as rod grinding and the like, and the product can be sold.
The steel slag processing and treating mode can cause that high temperature and dust are generated in a body region when the electric arc furnace discharges liquid steel slag and digs and shovels the steel slag on the spot in the smelting process, the generated high-temperature radiation and the generated dust can pollute the surrounding environment of a workshop, liquid red slag also needs to be transported, and finished steel slag can be manufactured through multi-channel deep processing.
Based on the above, the invention designs a device capable of processing the liquid steel slag forming of the electric arc furnace on line so as to solve the above problems.
Disclosure of Invention
The invention aims to provide a device capable of processing the formation of liquid steel slag of an electric furnace on line, which is used for smelting waste steel into molten steel by an electric arc furnace, and the device needs to discharge high-temperature liquid steel slag on a buffer slope arranged in a slag discharging pit to form double-layer impact diversion spreading, so that after the liquid steel slag is not piled up into a cluster, the liquid steel slag which does not fall to the ground can be rapidly cooled by a diversion impact and impact blowing method through the online processing function of high-pressure impact slag water and high-pressure air impact blowing, the sellable finished product water slag particles can be directly formed, the subsequent multiple processing links of the liquid steel slag can be omitted, equipment for crushing and transferring the steel slag by using a rod mill is omitted, the technological process for processing the steel slag is reduced, and the investment cost and the operation cost are reduced. With a simpler process, the effect of higher economic benefit is achieved.
The invention is realized by the following steps: an apparatus capable of processing liquid steel slag forming of an electric arc furnace on line, comprising:
the device comprises a buffering slope, a guide slope, a bearing plate, a high-pressure air blowing pipe, an upper-layer high-pressure slag flushing water pipe, a side-edge slag flushing water pipe, a lower-layer high-pressure air blowing pipe and a water mist collecting reservoir;
the water mist collection warehouse is a closed warehouse, a strip-shaped opening is formed in the rear side of the roof of the water mist collection warehouse, the opening is located right below a steel slag discharge port and covers the flowing range of steel slag, the buffering slope, the guiding slope and the bearing plate completely cover the bottom of the water mist collection warehouse, and a gate is arranged on the front side wall of the water mist collection warehouse;
the buffer slope, the guide slope and the bearing plate are flat plates which are low in front and high in back and inclined downwards, the buffer slope, the guide slope and the bearing plate sequentially form a sectional guide channel from top to bottom, the buffer slope is supported under a steel slag discharge port, and the bases of the buffer slope, the guide slope and the bearing plate are all concrete structures;
the rear side of the top of the buffering slope is also provided with a plurality of high-pressure air blowing pipes, and the air blowing direction of the high-pressure air blowing pipes is over against the flowing part of the steel slag above the buffering slope;
the front end of the buffering slope is not in contact with and is positioned right above the rear end of the guide slope, a lower-layer high-pressure air blowing pipe and an upper-layer high-pressure slag flushing water pipe are arranged at the interval between the buffering slope and the guide slope, the outlet directions of the lower-layer high-pressure air blowing pipe and the upper-layer high-pressure slag flushing water pipe are right opposite to the slag discharge passing position, the lower-layer high-pressure air blowing pipe and the upper-layer high-pressure slag flushing water pipe are horizontally arranged, and the lower-layer high-pressure air blowing pipe is positioned right below the upper-layer high-pressure slag flushing water pipe; a plurality of spray pipes are arranged right below the buffer slope;
the side slag flushing water pipes are arranged on the walls of the left side wall and the right side wall of the water mist collection warehouse, and the water spraying direction of the side slag flushing water pipes is opposite to the steel slag.
Furthermore, an air suction opening is further formed in the front end of the top of the water mist collection warehouse and the upper end of a main beam of the gate frame, the outer end of the air suction opening is in butt joint with an air suction pipeline, and an external high-pressure exhaust fan is arranged on a connecting pipeline.
Further, buffer slope, guide slope and the subaerial high escape canal in low back before having seted up of board left and right sides, the escape canal sets up along the fore-and-aft direction slope, the height in escape canal is less than and leans on the basis horizon height of leaning on department buffer slope, guide slope and accepting the board.
Further, the high-pressure gas blow pipe is connected with an external high-pressure fan air outlet, the high-pressure gas blow pipe air outlet is provided with a flat nozzle, the front end of the high-pressure gas blow pipe is arranged in a downward inclined mode, the high-pressure gas blow pipe is evenly distributed at the top rear end of the buffering slope, and the high-pressure gas blow pipe is not located in a steel slag discharge range.
Furthermore, the high-pressure air pipe is connected with an external high-pressure fan air supply main pipeline, the upper-layer high-pressure slag flushing water pipe is connected with a slag flushing water return pool water pump water supply main pipeline, flat high-pressure nozzles are arranged at outlets of the lower-layer high-pressure air blowing pipe and the upper-layer high-pressure slag flushing water pipe, the lower-layer high-pressure air blowing pipe and the upper-layer high-pressure slag flushing water pipe are vertically overlapped into a uniformly distributed rectangular array, and the blowing direction of the lower-layer high-pressure air blowing pipe and the upper-layer high-pressure slag flushing water pipe covers the flowing range of the steel slag;
the front end of the buffering slope extends out of the position right above the guiding slope, and the lower-layer high-pressure air blowing pipe and the upper-layer high-pressure slag flushing water pipe do not extend out of the coverage range of the buffering slope.
Furtherly, the side of the storehouse left and right sides is collected to water smoke is washed the sediment water pipe and is all even set up a plurality ofly, every the side is washed the sediment water pipe and is all vertical setting, every all even a plurality of shower nozzles of having laid on the sediment water pipe is washed to the side, just the side is washed the sediment water pipe and is connected with external working shaft owner.
The invention has the beneficial effects that: 1. the device combines the functional structures of the upper-layer high-pressure slag flushing water pipe, the lower-layer high-pressure air blowing pipe and the side slag flushing water pipe to blow and spread the liquid steel slag which does not fall to the ground to form slag particles by combining the functional structures of the buffer slope and the guide slope, so that the steel slag is finer and more uniform, a saleable steel slag finished product is directly formed, subsequent processing links are omitted, the process is very simple, the efficiency of production and operation is improved, subsequent transfer and rod mill processing equipment of the liquid steel slag are omitted, a subsequent processing field is not needed, the complicated procedures of deep processing such as hot charging, transfer, rolling hot braising or turnover hot splashing, rod mill and the like are not needed, and the investment cost and the operation maintenance cost of the steel slag processing equipment are reduced.
2. And the subsequent blowing and cooling by flushing slag water and high-pressure air makes the steel slag quickly cooled, plays a role in cooling, cooling and dust fall on a slag discharging operation area, and eliminates the environmental pollution effect caused by heat radiation and dust emission in a liquid steel slag processing operation area.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a schematic side view of the entire structure of the present invention;
FIG. 2 is a top view of the structure of the present invention;
FIG. 3 is a front elevational view of the present invention;
FIG. 4 is a top view of the internal structure of the water mist collection chamber of the present invention with the water mist collection chamber removed.
In the drawings, the components represented by the respective reference numerals are listed below:
1-buffer slope, 11-guide slope, 12-bearing plate, 13-drainage ditch, 2-high pressure gas blowing pipe, 21-upper-layer slag flushing water pipe, 22-side-edge slag flushing water pipe, 23-lower-layer high pressure gas blowing pipe, 3-water mist collection warehouse, 31-suction opening and 32-gate.
Detailed Description
Referring to fig. 1 to 4, the present invention provides a technical solution: an apparatus capable of processing liquid steel slag forming of an electric arc furnace on line, comprising:
the device comprises a buffering slope 1, a guide slope 11, a bearing plate 12, a high-pressure air blowing pipe 2, an upper-layer slag flushing water pipe 21, a side slag flushing water pipe 22, a lower-layer high-pressure air blowing pipe 23 and a water mist collecting reservoir 3;
the water mist collection warehouse 3 is a closed warehouse, a strip-shaped opening is formed in the rear side of the roof of the water mist collection warehouse, the opening is located right below a steel slag discharge port and covers the flowing range of steel slag, the buffering slope 1, the guiding slope 11 and the bearing plate 12 completely cover the bottom of the water mist collection warehouse 3, and a gate 32 is arranged on the front side wall of the water mist collection warehouse 3;
the buffer slope 1, the guide slope 11 and the bearing plate 12 are flat plates with the front lower part and the rear higher part inclined downwards, the buffer slope 1, the guide slope 11 and the bearing plate 12 sequentially form a sectional guide channel from top to bottom, the buffer slope 1 is borne under a steel slag discharge port, the bases of the buffer slope 1, the guide slope 11 and the bearing plate 12 are all concrete structures, and a plurality of steel blank plates are sequentially arranged among the buffer slope 1, the guide slope 11, the bearing plate 12 and a bottom foundation concrete structure in a stacking mode to form a stronger foundation structure;
the rear side of the top of the buffering slope 1 is also provided with a plurality of high-pressure air blowing pipes 2, and the air blowing direction of the high-pressure air blowing pipes 2 is over against the flowing part of the steel slag above the buffering slope 1;
the front end of the buffering slope 1 is not in contact with and is positioned right above the rear end of the guide slope 11, a lower-layer high-pressure air blowing pipe 23 and an upper-layer slag flushing water pipe 21 are arranged at the interval between the buffering slope 1 and the guide slope 11, the outlet directions of the high-pressure air pipe 23 and the bottom slag flushing water pipe 21 are right opposite to the slag discharge passing position, the lower-layer high-pressure air blowing pipe 23 and the upper-layer slag flushing water pipe 21 are horizontally arranged, and the lower-layer high-pressure air blowing pipe 23 is positioned right below the upper-layer slag flushing water pipe 21;
the side is washed sediment water pipe 22 and is set up on the wall of the 3 left and right sides in storehouse is collected to water smoke, the water spray direction that the sediment water pipe 22 was washed to the side is just to the slag, and high-pressure water smoke can break up the slag that has not solidified completely, and jet-propelled once more hits the bits of broken glass, and the water smoke can fully contact with the slag, takes away a large amount of heat, causes the slag to cool off rapidly and concentrates on accepting the board.
The top structure of the water mist collection storehouse 3 is formed by additionally arranging a layer of anti-corrosion heat insulation layer at the bottom of an electric furnace platform at the upper end of a slag discharge pit, and the surrounding walls are formed by erecting three side concrete retaining walls of an electric arc furnace slag discharge pit and a double-opening door 32 framework of a steel slag conveying channel at the front side. An inclined connecting plate is formed at the front end of the top of the water mist collection bin 3 and the upper end of a main beam of a frame of the double-opening door 32, an air suction opening 31 is further formed in the center, an exhaust pipeline 33 is connected to the outer end of the air suction opening 31, an external high-pressure exhaust fan is arranged on the connecting pipeline 33, high-temperature water vapor in the water mist collection bin 3 can be conveniently and timely drawn out, the room temperature in the water mist collection bin 3 can be quickly reduced, the dryness of air can be facilitated, and water can be quickly gasified to take away heat;
the high-pressure air blowing pipes 2 are connected with an external high-pressure fan air outlet main pipeline, flat nozzles are arranged at air outlets of the high-pressure air blowing pipes 2, the front ends of the high-pressure air blowing pipes 2 are arranged in a downward inclined mode, a plurality of high-pressure air blowing pipes 2 are uniformly distributed at the rear end of the top of the buffering slope 1, the high-pressure air blowing pipes 2 are not located in a steel slag discharging range, the high-pressure air blowing pipes 2 are located at the rear end of the buffering slope 1, the falling range of the steel slag is avoided, and the high-pressure air blowing pipes 2 are prevented from being damaged by impact;
the lower-layer high-pressure air blowing pipe 23 is connected with an external high-pressure fan air supply main pipeline, the upper-layer slag flushing water pipe 21 is connected with a slag flushing water return pool water pump water supply main pipeline, flat high-pressure nozzles are arranged at outlets of the lower-layer high-pressure air blowing pipe 23 and the bottom-layer slag flushing water pipe 21, the lower-layer high-pressure air blowing pipe 23 and the upper-layer slag flushing water pipe 21 are uniformly distributed in a rectangular array on a vertical plane, and the blowing directions of the lower-layer high-pressure air blowing pipe 23 and the upper-layer slag flushing water pipe 21 cover the flowing range of the steel slag;
the front end of the buffering slope 1 extends out of the guide slope 11, the high-pressure air pipe 2 does not extend out of the coverage range of the buffering slope 1, the lower-layer high-pressure air blowing pipe 23 and the bottom slag flushing water pipe 21 are located in the shielding protection range of the buffering slope 1, and water mist spraying is not influenced;
the side of 3 left and right sides in storehouse is collected to water smoke washes sediment water pipe 22 all even sets up a plurality ofly, every the side washes sediment water pipe 22 all vertical setting, every on the side dashes sediment water pipe 22 all even a plurality of shower nozzles of having laid, just the side dashes sediment water pipe 22 and is connected with external water pump water supply trunk line, is convenient for to the further cooling of slag.
In one embodiment of the invention:
the embodiment of the invention provides a device capable of processing the forming of liquid steel slag of an electric arc furnace on line,
the technical problems encountered by the invention are as follows: after the electric arc furnace smelts the steel scrap into liquid molten steel, the liquid steel slag that can produce need to be carried or dig shovel processing and transportation on the spot with connecing the sediment basin jar after, turns into solid-state slag after hot splashing or roll-in hot smoldering cooling again, and solid-state steel slag still needs to produce many processing and processing processes such as rod mill is smashed at last, can produce raise dust and pollute workshop environment. And when the electric arc furnace discharges liquid steel slag and converts the liquid steel slag into solid irregular steel slag through on-site treatment, high-temperature heat radiation can be generated near the electric arc furnace, so that the working environment of an electric furnace workshop area is poor. The technical problem solved by the invention is as follows: the forming function of online processing of the electric furnace steel slag can be realized through a simpler device system device. The process flow of conventional steel slag treatment is thoroughly improved, the production mode of small-particle steel slag and the quality of finished products are improved, the efficiency is improved, the environment is optimized, heavy steel slag treatment equipment is reduced, and more post-processing steps are omitted.
The realized technical effects are as follows: 1. when scrap steel is smelted into molten steel through an electric arc furnace, high-temperature liquid steel slag needs to be discharged on a buffer slope inclined plane to form up-and-down diversion impact spreading, so that the liquid steel slag is not accumulated into clusters. The on-line treatment process combining the slag flushing water and the high-pressure air flushing and blowing is adopted, so that the steel slag is more fine and uniform, the liquid steel slag can be directly and rapidly cooled, the sold finished water slag particles can be thoroughly formed, the subsequent processing link is omitted, the treatment process flow is simple, the production and operation efficiency is improved, the equipment for subsequent transfer and rod mill processing of the liquid steel slag is eliminated, and the effects of equipment investment cost and operation and maintenance cost are reduced.
2. After the liquid steel slag is blown by the high-pressure blowing pipe erected at the rear end of the top of the buffering slope, the steel slag can be spread to the front end and fall when the steel slag is spread to the front end, the high-pressure blowing and high-pressure flushing pipe erected between the bottom of the front end of the buffering slope and the rear end of the top of the guiding slope, and water and steam such as slag flushing water arranged on two sides of retaining walls on the left side and the right side of the collecting bin are mixed and blown to form slag flushing air and cover the flowing direction of the steel slag in the full range of the upper part, the lower part, the left part and the right part of the water, the steel slag is cooled rapidly, the steel slag is enabled to be finer and more uniform, the cooling and dust falling effects are also achieved on a slag discharging operation area, the pollution of high-temperature heat radiation and dust emission is eliminated, and the environment optimizing effect is achieved.
3. For the technical function of the system is more perfect, the guide slope bottom is connected with the bearing plate to form an obtuse-angle slope angle, so that a forklift can conveniently enter and load the steel slag, the steel slag bearing and flow guiding effects are realized, and the steel slag is prevented from being accumulated backwards when the forklift enters and loads the steel slag. And an air draft channel is arranged at the top of the water mist collection reservoir, drainage ditches are arranged on the two side retaining wall foundations, and when water gas blows high-temperature steel slag, a large amount of water, steam and smoke can be generated, so that the effect of a pumping and draining function is realized through the air draft channel and the drainage ditches.
In order to solve the above problems, the technical solution in the embodiments of the present invention has the following general idea:
for better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.
When the invention is manufactured, a conventional electric arc furnace is taken to be arranged in a steelmaking process flow, steel slag is discharged downwards from a furnace door opening into a slag discharging pit, when liquid steel slag is used for flushing from high to low, a buffer guide plate is paved in the slag discharging pit and aims at the center of the lower end of a slag discharging opening of the electric arc furnace, the liquid steel slag is received, the steel slag is impacted to be scattered and fall downwards, and after the flushing of high-pressure air and flushing water is combined, the steel slag is rapidly cooled and refined to form water slag particles;
the front, rear, left and right of the device are described as the steel slag flowing direction, the steel slag flowing direction is the front end, the steel slag flowing direction is the rear end, namely the electric arc furnace is the rear end, and the side of the gate 32 entering and exiting the transfer forklift is the front end.
The method is characterized in that a buffering slope 1, a guiding slope 11 and a bearing plate 12 are arranged below a slag discharging port of an electric arc furnace, the buffering slope 1, the guiding slope 11 and the bearing plate 12 are all inclined downwards from the front, so that the diversion of steel slag is facilitated, the buffering slope 1 for bearing the steel slag discharged by the electric arc furnace is arranged in sequence from high to low, the position of the buffering slope 1 for bearing the steel slag discharged by the electric arc furnace is the highest, the buffering slope 1 is full of the slag discharging range of the electric arc furnace, a row of high-pressure air blowing pipes 2 are arranged at the positions where the steel slag cannot impact, the air blowing direction of the high-pressure air blowing pipes 2 is slightly downwards, the front side of the rear side of the steel slag is along the flowing direction of the steel slag, a row of the high-pressure air blowing pipes 2 is provided with a plurality of high-pressure air blowing pipes 2, the air inlets of the high-pressure air blowing pipes 2 are regularly arranged at the same height position in a downward inclined angle in the same direction, the air inlets of the high-pressure air blowing pipes 2 are connected with a main pipeline at the air outlet of a high-pressure fan, flat blowing pipe 2 is arranged at the air outlet, the air outlet of the high-pressure air blowing pipe, the flat blowing pipe is used for blowing pipe for blowing liquid steel slag to blow away, so that the liquid steel slag falls on the buffering slope 1 in a scattered manner, and the liquid steel slag falls on the buffering slope 1, and the high-blowing pipe 2 is located at the rear end of the buffering slope 1;
the rear end of the guide slope 11 is supported at the front end of the buffer slope 1 at a high position and is spaced at a certain height, the front end of the buffer slope 1 extends out of the coverage range of the guide slope 11, a lower-layer high-pressure air blowing pipe 23 and an upper-layer slag flushing water pipe 21 are installed at the rear end of the guide slope 11, the lower-layer high-pressure air blowing pipe 23 and the upper-layer slag flushing water pipe 21 are installed on a vertical wall, and pipe orifices of the lower-layer high-pressure air blowing pipe 23 and the upper-layer slag flushing water pipe 21 are exposed out of the vertical wall and are used for shielding steel slag and avoiding equipment from being damaged by splashing; the pipeline installation mode belongs to pipeline installation known by technicians in the field, and the embodiment only needs to blow out high-pressure mixed water mist of gas and liquid, so that scattered steel slag can be conveniently dispersed again, the effect of quickly cooling is achieved, and more steel slag at high temperature can be broken when being cooled;
at least two side slag flushing water pipes 22 are vertically arranged on the walls of the left side and the right side of the guide slope 11, the side slag flushing water pipes 22 are vertically arranged, a plurality of spray heads are arranged on each side slag flushing water pipe 22, each spray head is a spray head of a high-pressure water gun, the plurality of spray heads on the side slag flushing water pipes 22 are connected with a water pump to form a plurality of spray heads on one pipe, and the spray heads are spray heads of the high-pressure water guns and can spray high-pressure water mist; the water can be scattered and sprayed out at high pressure, the heat in the steel slag can be carried, the steel slag is reduced to the normal temperature, the receiving plate 12 is connected to the front end of the guide plate 11 continuously and is used for accumulating the steel slag, and the steel slag can be transported by a forklift and can also be continuously reduced in temperature;
the buffer slope 1, the guide slope 11 and the bearing plate 12 are all positioned in a slag discharging pit and are all covered by a water mist collection reservoir 3 erected on a concrete retaining wall of the slag discharging pit, the left side and the right side of the ground slag pit retaining wall in the water mist collection reservoir 3 are respectively provided with a drainage ditch 13, the drainage direction is along, the drainage ditches 13 are arranged along the direction of the bottom of the foundation of the buffer slope 1, the guide slope 11 and the bearing plate 12 and are attached to the left side and the right side of the foundation, the drainage ditches 13 are also inclined downwards in a mode that the rear part is higher than the front part, the front part is lower than the front part, the drainage ditches are always lower than the buffer slope 1, the guide slope 11 and the bearing plate 12 at the positions, the heights are always different by 50cm, the heights are optimal, and the drainage ditches 13 are continuous slopes;
the peripheral walls of the water mist collection warehouse 3 are erected into walls with the periphery closed by utilizing three side concrete retaining walls of an electric arc fire grate slag pit and a double-opening gate 32 frame of a front side steel slag transportation channel, the top of the rear end of the water mist collection warehouse 3 is provided with an opening for avoiding a path for steel slag to fall on the buffering slope 1, the opening at the top of the water mist collection warehouse 3 is larger than the coverage range of the path for the steel slag to flow out, a gate 32 is arranged on the front side wall of the water mist collection warehouse 3, the gate 32 is a double-opening gate, the opening at the center of the inclined plane at the upper end of the gate is provided with an air suction port 31, is externally connected with an air suction pipeline 33 and is provided with an external high-pressure exhaust fan for connection, so that an air mist water vapor channel in the pumping water mist collection warehouse is formed;
the water mist collection bin 3 is a wall body with the periphery closed, the top of the rear end of the water mist collection bin 3 is provided with an opening and is used for avoiding a path for steel slag to fall on the buffering slope 1, the top opening of the water mist collection bin 3 is larger than the coverage range of the path for the steel slag to flow out, and the coverage area of the buffering slope 1 is larger than the projection area of the top opening of the water mist collection bin 3 on the horizontal plane;
a steel structure door frame of a gate 32 is arranged on the front side wall of the water mist collection warehouse 3, and the gate 32 is a double-door;
the central position of 3 front side tops in storehouse and the frame girder upper end at two open doors are collected to water smoke still needs to set up suction opening 31 for discharge vapor, and the one end of suction opening 31 is connected at 3 inner chamber tops in storehouse are collected to water smoke, the outer end of suction opening 31 connect externally can, and set up the fan and outwards take out steam.
The energy-saving system structure device is controlled in a semi-automatic mode, and the system structure needs manual cooperation to be operated. The high-pressure exhaust fan, the high-pressure fan, the water supply pump, the high-pressure air blowing pipe 2, the side slag flushing water pipe 22 and the double-opening door 32 in the system device are controlled by manpower to be opened and closed or opened and stopped, and the main reason is that the high-power motor cannot be automatically started and stopped by adopting a PLC. And the pipeline gate valves for supplying air and water of the lower-layer high-pressure air blowing pipe 23 and the upper-layer slag flushing water pipe 21 are connected with the slag discharging port system of the electric arc furnace by the same PLC controller to automatically control the closing and opening actions.
The buffering slope 1, the guiding slope 11 and the bearing plate 12 are all steel blank plates which not only have high temperature and simple structure, but also can be added with a layer of high-temperature resistant cast steel plate or hollow water cooling plate on the central slag flushing position of the buffering slope 1. All assist and establish on the concrete spandrel girder in arranging the slag hole or erect the basis of steel construction spandrel girder to wherein assist and mix earth, form the escape canal, make it be overall structure, have strong holding power again, can not damaged by the long-term impact of slag.
When the invention is used, the structural device of the integral operation system for online processing the liquid steel slag of the electric furnace is required to be checked in advance when the electric arc furnace is prepared for starting production, and the structural points of the system of each device are ensured to be in a normal state. When the electric arc furnace starts to be electrified for production and operation, the high-pressure gas blowing pipe 2 and the gate valve of the side slag flushing water pipe 22, the air exhaust port 31 of the water mist collection warehouse, the air exhaust pipeline 33 and other equipment systems are kept in a normally open state through manual management and control operation. And then starting the high-pressure fan and the water supply pump, and closing the water mist collecting warehouse door 32 after ensuring that the water vapor flushing and blowing equipment at the water vapor flushing and blowing point which is normally opened in the system is normal. The purpose of opening the high-altitude flushing pipe 2 and the side flushing slag water pipe 22 in advance to discharge, flush, blow and discharge is to protect the normal operation of a high-power water supply pump, a high-pressure exhaust fan and an axial flow machine.
And then, starting the high-pressure exhaust fan to wait for slag discharge of the electric furnace, and automatically opening a gate valve for flushing and blowing the steel slag by the PLC control system, such as an upper slag flushing water pipe 21 and a lower high-pressure air blowing pipe 23, when the liquid steel slag of the electric furnace is discharged from a slag discharge port. At this time, the liquid steel slag flowing down from the slag discharge port of the electric arc furnace is firstly blown by the high-pressure air blowing pipe 2 which is arranged at the rear upper end of the buffering slope and is close to the retaining wall of the slag discharge pit and is impacted by the buffering slope, and then spread and dispersed to the front end of the buffering slope panel, so that when the liquid steel slag is blown and impacted and then is downwards guided, spread and dispersed again and falls, the liquid steel slag is blown by the side slag flushing water pipes 22 arranged on the left retaining wall and the right retaining wall of the slag discharge pit, the lower high-pressure air blowing pipe 23 and the upper slag flushing water pipe 21 in the interlayer of the buffering slope 1 and the guiding slope 11, and then the liquid steel slag can thoroughly form tiny finished product slag granules which can be sold and can be concentrated on the bearing plate 12 to be accumulated. At this time, the cooling water generated by slag flushing on the bearing plate flows to the water supply tank from the drainage ditches 13 at the two sides for sedimentation and recycling, and the high-temperature steam and the smoke generated in the water mist collection reservoir 3 are rapidly pumped to the outside of the workshop from the external high-power high-pressure exhaust fan connected with the exhaust port 31 and the exhaust pipeline 33 for discharge. The temperature in the collection warehouse is also reduced, and finally, finished water slag particles are loaded through whole-process management and control according to production operation conditions by forklift drivers and furnace bench duty managers.
The steel slag falls along the slope direction on the guide slope 11, because of the water flow impact of the side slag flushing water pipe 22, the steel slag is relatively concentrated at the middle position and then stacked on the bearing plate 12, water drops and water mist can be continuously poured on the steel slag, the steel slag is continuously cooled, the effects of cooling and dedusting are achieved, the water flow can flow away along the drainage ditches 13 on the two sides, after the cooling is completed, the gate 32 is opened, the forklift enters the water mist collecting and heat insulating cover 3, and the cooled and formed steel slag is shoveled out and transported.
In addition, in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Although specific embodiments of the present invention have been described herein, it will be understood by those skilled in the art that the specific embodiments herein described are illustrative only and are not limiting to the scope of the invention, and that equivalent modifications and variations including the ability to process liquid steel slag discharged from an electric arc furnace on-line or off-line from a swing receiving vessel, which are within the spirit of the invention, are intended to be covered by the appended claims.
Claims (6)
1. The utility model provides a can handle fashioned device of electric arc furnace liquid steel slag on line which characterized in that includes: the device comprises a buffering slope (1), a guide slope (11), a bearing plate (12), a high-pressure air blowing pipe (2), an upper-layer high-pressure slag flushing water pipe (21), a side slag flushing water pipe (22), a lower-layer high-pressure air blowing pipe (23) and a water mist collecting warehouse (3);
the water mist collection warehouse (3) is a closed warehouse, a strip-shaped opening is formed in the rear side of the roof of the water mist collection warehouse, the opening is located right below a steel slag discharge port and covers the flowing range of steel slag, the bottom of the water mist collection warehouse (3) is completely covered by the buffer slope (1), the guide slope (11) and the bearing plate (12), and a gate (32) is arranged on the front side wall of the water mist collection warehouse (3);
the buffer slope (1), the guide slope (11) and the bearing plate (12) are flat plates with the front lower part and the rear higher part inclined downwards, the buffer slope (1), the guide slope (11) and the bearing plate (12) sequentially form a sectional guide channel from top to bottom, the buffer slope (1) is borne under a steel slag discharge port, and the bases of the buffer slope (1), the guide slope (11) and the bearing plate (12) are all concrete structures;
the rear side of the top of the buffering slope (1) is also provided with a plurality of high-pressure air blowing pipes (2), and the air blowing direction of the high-pressure air blowing pipes (2) is over against the flowing part of the steel slag above the buffering slope (1);
the front end of the buffering slope (1) is not in contact with the rear end of the guide slope (11) directly above, a lower-layer high-pressure air blowing pipe (23) and an upper-layer high-pressure slag flushing water pipe (21) are arranged at the interval between the buffering slope (1) and the guide slope (11), the outlet directions of the lower-layer high-pressure air blowing pipe (23) and the upper-layer high-pressure slag flushing water pipe (21) are opposite to the slag discharge passing position, the lower-layer high-pressure air blowing pipe (23) and the upper-layer high-pressure slag flushing water pipe (21) are horizontally arranged, and the lower-layer high-pressure air blowing pipe (23) is located directly below the upper-layer high-pressure slag flushing water pipe (21); a plurality of spray pipes are arranged right below the buffering slope (1);
the side slag flushing water pipes (22) are arranged on the walls of the left side wall and the right side wall of the water mist collection warehouse (3), and the water spraying direction of the side slag flushing water pipes (22) is opposite to the steel slag.
2. The apparatus of claim 1, wherein the apparatus is capable of processing the formation of liquid steel slag in the electric arc furnace on-line, and comprises: the water mist collecting warehouse is characterized in that the front end of the top of the water mist collecting warehouse (3) and the upper end of a main beam of a frame of a gate (32) form an inclined plane for erecting a heat insulation plate, an air suction opening (31) is further arranged at the center position, an exhaust pipeline (33) is connected to the outer end of the air suction opening (31), and an external high-pressure exhaust fan is arranged on the connecting pipeline (33).
3. The apparatus of claim 1, wherein the apparatus is capable of processing the formation of liquid steel slag in the electric arc furnace on-line, and comprises: cushion slope (1), direction slope (11) and accept board (12) left and right sides subaerial low back high escape canal (13) of having seted up in the front, escape canal (13) set up along the fore-and-aft direction slope, the height in escape canal (13) is less than the basis horizon height of pasting and leaning on a cushion slope (1), direction slope (11) and accepting board (12).
4. The apparatus of claim 2, wherein the apparatus is capable of processing the formation of liquid steel slag in the electric arc furnace on-line, and comprises: high-pressure gas blow pipe (2) are connected with external high pressure positive blower air outlet, high-pressure gas blow pipe (2) air outlet has set up flat nozzle in shoulder, just the air outlet front end of high-pressure gas blow pipe (2) sets up the slope down a little, and is a plurality of high-pressure gas blow pipe (2) even distribution is in the top rear end of buffering slope (1), high-pressure gas blow pipe (2) are not in slag discharge range.
5. The device of claim 1, which is capable of processing the formation of the liquid steel slag of the electric furnace on line, and is characterized in that: the lower-layer high-pressure air blowing pipe (23) is connected with an external high-pressure fan, the upper-layer high-pressure slag flushing water pipe (21) is connected with a water supply main pipeline of a water pump of a slag flushing water return pool, flat high-pressure nozzles are arranged at outlets of the lower-layer high-pressure air blowing pipe (23) and the upper-layer high-pressure slag flushing water pipe (21), the lower-layer high-pressure air blowing pipe (23) and the upper-layer high-pressure slag flushing water pipe (21) are vertically overlapped into a uniformly distributed rectangular array, and the flushing and blowing directions of the lower-layer high-pressure air blowing pipe (23) and the upper-layer high-pressure slag flushing water pipe (21) cover the flowing range of the steel slag;
the front end of the buffering slope (1) extends out of the guide slope (11), and the upper-layer high-pressure slag flushing water pipe (21) and the lower-layer high-pressure air blowing pipe (23) do not extend out of the coverage range of the buffering slope (1).
6. The apparatus of claim 1, wherein the apparatus is capable of processing the formation of liquid steel slag in the electric arc furnace on-line, and comprises: the side towards sediment water pipe (22) of storehouse (3) left and right sides is collected to water smoke all even sets up a plurality ofly, every the side towards sediment water pipe (22) is vertical setting all, every all even a plurality of shower nozzles have been laid on the side towards sediment water pipe (22), just side towards sediment water pipe (22) is connected with external feed pump.
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| CN202210765517.4A CN115161421B (en) | 2022-07-01 | 2022-07-01 | Device capable of online processing electric arc furnace liquid steel slag forming |
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| CN202210765517.4A CN115161421B (en) | 2022-07-01 | 2022-07-01 | Device capable of online processing electric arc furnace liquid steel slag forming |
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| CN111363869A (en) * | 2020-04-17 | 2020-07-03 | 一重集团大连工程技术有限公司 | Steel slag dry processing equipment |
| CN216378272U (en) * | 2021-12-06 | 2022-04-26 | 江苏华闰环保科技有限公司 | Vortex wind and high-pressure water intelligent cooperation steel slag treatment system |
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| JP2003328015A (en) * | 2002-05-09 | 2003-11-19 | Nippon Steel Corp | Method for treating slag in refining |
| CN2771216Y (en) * | 2005-03-18 | 2006-04-12 | 李志成 | Slag granulating device |
| US20080115624A1 (en) * | 2006-07-27 | 2008-05-22 | Jean Brodeur | Method of handling, conditioning and processing steel slags |
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| CN115161421B (en) | 2023-08-25 |
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