CN112981023A

CN112981023A - Molten iron ladle slag cover treatment device

Info

Publication number: CN112981023A
Application number: CN202110194094.0A
Authority: CN
Inventors: 陈生利; 包锋; 邓晖; 颜伟; 刘立广
Original assignee: SGIS Songshan Co Ltd
Current assignee: SGIS Songshan Co Ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-06-18

Abstract

The invention discloses a molten iron ladle slag cover processing device which comprises a central column, a rotating frame, a driving mechanism, a cutting gun assembly and a pipeline assembly, wherein the cutting gun assembly comprises a plurality of gun nozzles, the gun nozzles are arranged on the rotating frame at intervals, the rotating frame is sleeved on the central column, the driving mechanism is arranged on the rotating frame and can enable the rotating frame to rotate around the axis of the central column, and the pipeline assembly is connected with the cutting gun assembly and supplies air to the cutting gun assembly, so that the gun nozzles spray flames and cut slag covers in a molten iron ladle. The gun nozzle of the molten iron ladle slag cover processing device can rotate along with the rotating frame, and the slag cover on the surface of the molten iron ladle is quickly cut by utilizing the moving flame, so that the slag cover is prevented from being processed by a gun machine, the labor intensity is reduced, the refractory material in the molten iron ladle is prevented from loosening, the maintenance cost of the molten iron ladle is reduced, and the molten iron ladle slag cover processing device is safe and efficient.

Description

Molten iron ladle slag cover treatment device

Technical Field

The invention relates to the technical field of steel manufacturing, in particular to a molten iron ladle slag cover treatment device.

Background

The ladle is a tool for containing molten iron in a blast furnace, the iron content of the molten iron is dozens to hundreds of tons generally, and most steel companies use 100 to 130 tons of ladles to contain high-temperature molten iron produced by the blast furnace according to the requirements of the current steelmaking process. In the prior art, molten iron flows into a dragon channel from a blast furnace main channel through a skimmer and finally enters a ladle. In the process of packaging molten iron in molten iron, when the skimmer is damaged, a large amount of slag is easy to enter a ladle along with the molten iron; or the slag in the main channel flows into the ladle due to manual misoperation; or the refractory materials, impurities and the like in the molten iron ditch area fall off and flow into the ladle in the tapping process. Before the main channel of the blast furnace is stopped and repaired, the residual iron in the main channel is usually discharged, the slag content of the residual iron reaches more than 30 percent, and although a certain pretreatment means is carried out, the phenomenon that slag flows into a foundry ladle cannot be avoided.

In the prior art, when a small amount of slag is in a ladle, the slag and molten iron are poured into a converter for direct steelmaking, so that the consumption cost of steelmaking slag melting is increased, and certain influence is brought to steelmaking. As the slag in the ladle accumulates more and more, the slag is generally poured before the steel making, which wastes time and labor. When the slag in the ladle is more, particularly in rainy days or low air temperature, the slag on the upper layer of the ladle is easy to cover, and the covering thickness is changed along with the slag amount. When the slag on the upper layer of the molten iron ladle is too much and the joint cover is thick, the inverted molten iron for steel making can be seriously influenced, and the slag cover on the upper layer of the molten iron ladle needs to be punched by a blasting machine to break or punch a hole, so that the operation of inverted molten iron is realized. The slag cover is processed by the gun machine, time and labor are consumed, the gun machine is particularly seriously damaged by high-temperature slag, the consumption of a gun head is obviously high when the gun machine is frequently used for striking the slag cover, and the cost is increased. In addition, the slag cover on the ladle is knocked by using the cannon, and the hardness of the slag cover is high, so that refractory bricks and refractory materials in the ladle are easily knocked loose, gaps are generated in the lining of the ladle, molten iron is filled, and leakage is caused, and safety accidents are caused. After the refractory material and the brick lining are loosened, the building needs to be poured again, and the cost is greatly wasted.

Disclosure of Invention

The invention aims to provide a molten iron ladle slag cover processing device, which can be used for rapidly processing a slag cover layer generated by slag bonding on the surface of a molten iron ladle, reducing the maintenance cost of the molten iron ladle, and being safe and efficient.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a molten iron package slag cover processing apparatus, includes center post, revolving frame, actuating mechanism, burning torch subassembly and pipeline subassembly, the burning torch subassembly includes a plurality of rifle mouths, the rifle mouth interval sets up revolving frame is last, the revolving frame cover is established on the center post, actuating mechanism sets up revolving frame is last and can make revolving frame winds the axis of center post is rotatory, the pipeline subassembly with the burning torch subassembly is connected and does burning torch subassembly air feed makes the rifle mouth blowout flame and the cutting slag cover in the ladle.

As a preferred scheme of the invention, the pipeline assembly comprises a distributor, a mounting bracket and a plurality of air supply pipe fittings, the mounting bracket is arranged on the central column and is positioned above the rotating frame, the distributor is connected with an air source, one end of the air supply pipe fitting is connected with the distributor, and the other end of the air supply pipe fitting is connected with the cutting torch assembly.

As a preferable scheme of the invention, the cutting torch assembly further comprises a regulating valve arranged on the torch nozzle, and the regulating valve is connected with the gas supply pipe fitting.

As a preferable mode of the present invention, the air supply pipe member includes a first hose section, a hard pipe section, and a second hose section, one end of the first hose section is connected to the distributor, the other end of the first hose section is connected to the hard pipe section, the hard pipe section is provided on the rotating frame, one end of the second hose section is connected to the hard pipe section, and the other end of the second hose section is connected to the regulating valve.

As a preferable mode of the present invention, the gas supply pipe includes a gas delivery pipe, a first oxygen delivery pipe, and a second oxygen delivery pipe, and a maximum flow rate of the second oxygen delivery pipe is larger than a maximum flow rate of the first oxygen delivery pipe.

In a preferred embodiment of the present invention, the fuel gas delivery line is used for delivering acetylene gas.

As a preferable scheme of the present invention, the ladle slag cover treatment device further includes a heat insulation layer, the heat insulation layer is disposed at the bottom of the rotating frame and connected to one end of the center column, the heat insulation layer and the rotating frame are disposed at an interval, and the gun nozzle is surrounded on a side surface of the heat insulation layer.

As a preferable aspect of the present invention, the ladle slag cover processing apparatus further includes a bearing disposed between the center column and the rotating frame.

As a preferable scheme of the present invention, the driving mechanism includes a cylinder and a rack, a gear ring structure is disposed on a surface of the central column, the rack is engaged with the gear ring structure, and the rack is connected to a piston rod of the cylinder.

In a preferred embodiment of the present invention, the number of the gun nozzles is at least two, and the gun nozzles are distributed on the same circumference.

The invention has the beneficial effects that:

the gun nozzle of the molten iron ladle slag cover processing device can rotate along with the rotating frame, and the slag cover on the surface of the molten iron ladle is quickly cut by utilizing the moving flame, so that the slag cover is prevented from being processed by a gun machine, the labor intensity is reduced, the refractory material in the molten iron ladle is prevented from loosening, the maintenance cost of the molten iron ladle is reduced, and the molten iron ladle slag cover processing device is safe and efficient.

Drawings

FIG. 1 is a schematic top view of a ladle slag cover treatment apparatus according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural diagram of a duct assembly according to an embodiment of the present invention.

In the figure:

1. a central column; 2. a rotating frame; 3. a drive mechanism; 31. a cylinder; 32. a rack; 4. a cutting gun assembly; 41. a gun nozzle; 42. adjusting a valve; 5. a conduit assembly; 51. a dispenser; 52. mounting a bracket; 53. a gas supply pipe fitting; 531. a first hose segment; 532. a hard pipe section; 533. a second hose section; 534. a gas delivery line; 535. a first oxygen delivery line; 536. a second oxygen delivery line; 537. a stop valve; 538. a one-way valve; 6. a thermal insulation layer; 7. a bearing; 100. a gas source; 200. a source of oxygen gas.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the word "over" a first feature or feature in a second feature may include the word "over" or "over" the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 and 2, the slag cover processing apparatus for a ladle according to an embodiment includes a central column 1, a rotating frame 2, a driving mechanism 3, a cutting torch assembly 4 and a pipeline assembly 5, wherein the cutting torch assembly 4 includes a plurality of torch tips 41, the torch tips 41 are disposed on the rotating frame 2 at intervals, the rotating frame 2 is sleeved on the central column 1, the driving mechanism 3 is disposed on the rotating frame 2 and can rotate the rotating frame 2 around an axis of the central column 1, and the pipeline assembly 5 is connected with the cutting torch assembly 4 and supplies air to the cutting torch assembly 4, so that the torch tips 41 spray flames and cut slag covers in the ladle.

In this embodiment, the number of the nozzles 41 is four, and the four nozzles 41 are distributed on the same circumference at equal intervals, so that the flame sprayed from the four nozzles 41 can draw a complete circle by rotating the rotating frame 2 by 90 degrees, thereby effectively cutting the slag cover. When the number of the gun nozzles 41 is larger, the angle of the rotating frame 2 to be rotated is smaller, and the number of the gun nozzles 41 is not less than two in order to have higher cutting efficiency.

The top of the central column 1 may be provided with a suspension structure so that the ladle slag cover treatment apparatus is transferred using other equipment.

The muzzle 41 of the ladle slag cover processing device of the embodiment can rotate along with the rotating frame 2, the slag cover on the surface of the ladle is quickly cut by utilizing the moving flame, the gun machine is prevented from being used for processing the slag cover, the labor intensity is reduced, the loosening of the refractory material in the ladle is avoided, and the maintenance cost, safety and high efficiency of the ladle are reduced.

Further, the pipeline assembly 5 comprises a distributor 51, a mounting bracket 52 and a plurality of air supply pipe fittings 53, wherein the mounting bracket 52 is arranged on the center column 1 and is positioned above the rotating frame 2, the distributor 51 is connected with an air source, one end of each air supply pipe fitting 53 is connected with the distributor 51, and the other end of each air supply pipe fitting 53 is connected with the cutting torch assembly 4. Each cutting torch assembly 4 requires a pipeline for supplying gas, the supplied gas comprises combustible gas and combustion-supporting gas, a distributor 51 is required to be arranged for distribution, and a mounting bracket 52 enables the distributor 51 to be fixed on the central column 1.

In this embodiment, the cutting torch assembly 4 further comprises a regulating valve 42 disposed on the torch tip 41, and the regulating valve 42 is connected to the air supply pipe 53. The regulating valve 42 regulates the flame sprayed from the gun nozzle 41 by regulating the flow of the gas, so as to reasonably regulate the flame size and temperature according to different operation processes, thereby ensuring good cutting effect.

Further, the air supply pipe 53 includes a first hose section 531, a hard pipe section 532, and a second hose section 533, one end of the first hose section 531 is connected to the distributor 51, the other end of the first hose section 531 is connected to the hard pipe section 532, the hard pipe section 532 is disposed on the rotating frame 2, one end of the second hose section 533 is connected to the hard pipe section 532, and the other end of the second hose section 533 is connected to the regulating valve 42. Since the rotating frame 2 rotates around the central column 1 by a certain angle, the first flexible pipe section 531 is deformed during the rotation of the rotating frame 2, so that the gas can be normally supplied. However, if the air supply pipe 53 is made of a hose, it is inconvenient to arrange the lines, and thus a form of a hose with a hard pipe is adopted.

As shown in fig. 3, the gas supply pipe 53 includes a gas delivery pipe 534, a first oxygen delivery pipe 535, and a second oxygen delivery pipe 536, and the maximum flow rate of the second oxygen delivery pipe 536 is greater than the maximum flow rate of the first oxygen delivery pipe 535. When the slag cover needs to be cut, the gas conveying pipeline 534 supplies gas to the gun nozzle 41, the first oxygen conveying pipeline 535 supplies oxygen to the gun nozzle 41 at a low flow rate for preheating, the mixed gas meets the glowing slag cover surface and is ignited, then the oxygen flow in the first oxygen conveying pipeline 535 is gradually increased by the adjusting valve 42 until the flame becomes neutral flame, then the second oxygen conveying pipeline 536 supplies oxygen to the gun nozzle 41, the oxygen flow in the second oxygen conveying pipeline 536 is gradually increased, meanwhile, the oxygen flow of the first oxygen conveying pipeline 535 is reduced to zero, finally, the rotating frame 2 is rotated after the flame is adjusted to a preset state, and the cutting of the slag cover is completed.

A stop valve 537 and a check valve 538 are arranged on the fuel gas conveying pipeline 534, the first oxygen conveying pipeline 535 and the second oxygen conveying pipeline 536, the stop valve 537 is used for cutting off the gas supply, and the check valve 538 is used for preventing the gas from flowing back. Gas feed line 534 is connected to gas source 100 and first oxygen feed line 535 and second oxygen feed line 536 are connected to oxygen source 200.

Preferably, the gas delivery line 534 is used for delivering acetylene gas, and the acetylene flame has a high temperature, so that the cutting operation of the slag cover has high efficiency.

Preferably, the ladle slag cover treatment device further comprises a heat insulation layer 6, the heat insulation layer 6 is arranged at the bottom of the rotating frame 2 and connected with one end of the central column 1, the heat insulation layer 6 and the rotating frame 2 are arranged at intervals, and the gun nozzle 41 surrounds the side face of the heat insulation layer 6. The heat insulation layer 6 can be formed by pouring refractory materials, has a protection effect on the rotating frame 2, and prolongs the service life of the rotating frame 2.

In the present embodiment, the ladle slag cover treatment apparatus further includes a bearing 7, and the bearing 7 is disposed between the center pillar 1 and the rotating frame 2 to reduce resistance when the rotating frame 2 moves.

As shown in fig. 1, the driving mechanism 3 in the present embodiment comprises a cylinder 31 and a rack 32, wherein the surface of the central column 1 is provided with a gear structure (not shown in the figure), the rack 32 is engaged with the gear structure, and the rack 32 is connected with a piston rod of the cylinder 31. The piston rod of the cylinder 31 drives the rack 32 to reciprocate, so that the rotating frame 2 returns to the original position after rotating for a certain angle around the central column 1.

In other embodiments, the driving mechanism 3 may be in the form of a motor with gears engaging with the surface of the central column 1, the motor driving the gears to rotate, and also enabling the rotating frame 2 to rotate around the central column 1.

Reference throughout this specification to the description of the terms "preferred," "further," or the like, as used in describing preferred embodiments of the present invention, means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above examples are only intended to illustrate the details of the invention, which is not limited to the above details, i.e. it is not intended that the invention must be implemented in such detail. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims

1. The utility model provides a molten iron ladle slag lid processing apparatus, its characterized in that includes center post, revolving frame, actuating mechanism, burning torch subassembly and pipeline subassembly, the burning torch subassembly includes a plurality of rifle mouths, the rifle mouth interval sets up on the revolving frame, the revolving frame cover is established on the center post, actuating mechanism sets up on the revolving frame and can make revolving frame winds the axis of center post is rotatory, the pipeline subassembly with the burning torch subassembly is connected and does the burning torch subassembly air feed makes the rifle mouth blowout flame and the cutting slag lid in the ladle.

2. The device of claim 1, wherein the conduit assembly comprises a distributor, a mounting bracket, and a plurality of gas supply pipe fittings, the mounting bracket is disposed on the center post and positioned above the rotating frame, the distributor is connected to a gas source, one end of the gas supply pipe fittings is connected to the distributor, and the other end of the gas supply pipe fittings is connected to the cutting torch assembly.

3. The apparatus of claim 2, wherein the cutting torch assembly further comprises a regulating valve disposed on the torch tip, the regulating valve being connected to the gas supply pipe.

4. The apparatus according to claim 3, wherein the gas supply pipe member includes a first hose section, a hard pipe section, and a second hose section, one end of the first hose section being connected to the distributor, the other end of the first hose section being connected to the hard pipe section, the hard pipe section being provided on the rotating frame, one end of the second hose section being connected to the hard pipe section, and the other end of the second hose section being connected to the regulating valve.

5. The ladle slag cover treatment device according to claim 3, wherein the gas supply pipe member comprises a gas delivery pipe, a first oxygen delivery pipe and a second oxygen delivery pipe, and the maximum flow rate of the second oxygen delivery pipe is greater than the maximum flow rate of the first oxygen delivery pipe.

6. The ladle slag cover treatment device according to claim 5, wherein the gas delivery line is used for delivering acetylene gas.

7. The device as claimed in any one of claims 1 to 6, further comprising a thermal insulation layer disposed at the bottom of the rotating frame and connected to one end of the center column, the thermal insulation layer being spaced apart from the rotating frame, and the muzzle being surrounded on a side of the thermal insulation layer.

8. The apparatus according to any one of claims 1 to 6, further comprising a bearing disposed between the center column and the rotating frame.

9. The device as claimed in any one of claims 1 to 6, wherein the driving mechanism comprises a cylinder and a rack, a gear ring structure is provided on the surface of the central column, the rack is engaged with the gear ring structure, and the rack is connected with a piston rod of the cylinder.

10. The apparatus according to any one of claims 1 to 6, wherein the number of the lances is at least two, and the lances are distributed on the same circumference.