Automatic control system for deslagging of vertical tank reduction furnace

Abstract

The utility model discloses a vertical tank reduction furnace deslagging automatic control system which comprises at least one vertical tank reduction furnace zone group, a guide rail, slag conveying trolleys, a high-temperature conveying chain, a magnesium slag waste heat boiler and a slag cooler, one slag conveying trolley is arranged below each vertical tank reduction furnace zone group, each slag conveying trolley is arranged on the guide rail in a sliding mode, and the high-temperature conveying chain is connected with the magnesium slag waste heat boiler. A high-temperature conveying chain is arranged below one end of the guide rail, a magnesium slag waste heat boiler is arranged below the output end of the high-temperature conveying chain, and the output end of the magnesium slag waste heat boiler is connected with a slag cooler. Each vertical tank reduction furnace area group comprises at least two groups of reduction tanks, each group of reduction tanks comprises two parallel reduction tanks, an indicator lamp is arranged at each group of reduction tanks, and a first sensing device is arranged below each reduction tank. The automatic deslagging control system for the vertical tank reduction furnace and the deslagging method have the advantages of high production efficiency, high automation degree and capability of reducing labor intensity.

Description

Technical Field

[0001] The utility model belongs to the technical field of reduction furnaces, and in particular relates to an automatic slag discharge control system for a vertical pot reduction furnace. Background Art

[0002] Vertical reduction tank process flow: The pellets are conveyed to the buffer bin via a belt conveyor, and the control valve under the buffer bin controls the conveying volume of the pellets through PID. The pellets are sent to the top of the closed material ball feeding cart in each reduction workshop via a conveyor and a belt scale, and flow into the closed material ball feeding cart along the inclined spiral slideway. The pellets are respectively put into two feeding buckets through the lower plug valve and control valve. When the set volume (or weight) is reached, the valve is automatically closed. The two feeding buckets are grouped together and moved to the waiting position as a whole. When it is detected that a certain station needs to be supplemented with pellets, the push device pushes the feeding bucket filled with pellets onto the transport trolley and transports it to the replenishment station. The empty barrel is exchanged with the full barrel, and the transport trolley sends the empty barrel back to the conversion bin to receive the material. After receiving the material, it returns to the waiting position again. When feeding, the central tube is first inserted, the full barrel is transported to the reduction tank, and the material is lowered. The empty barrel is hoisted and converted to the set position, the fire baffle and the reduction tank cover are installed, the bottom crystallizer and the fire baffle are placed in place, and the bottom cover of the reduction tank is installed in place. After all the processes are ready, the vacuum is drawn and the heating reduction state is carried out. After 16 hours of thermal reduction reaction, the process setting time is reached, and the crystallizer hydraulic trolley returns to the required furnace position and raises the tray to the point where the crystallizer cover at the bottom of the reduction tank can be lifted, and the vacuum is released in turn. Open the bottom cover of the reduction tank, take out the crystallizer and send it to the designated position, lift out the upper cover and fire baffle, lift the central tube to discharge the slag, and the waste slag automatically falls into the slag discharge vehicle and is sent out of the reduction workshop by a forklift.

[0003] Most manufacturers in this field do not have environmental protection facilities. The reason is that the forklift operator forks the slag pot into the reduction workshop and places it under the reduction pot that needs to be discharged. The slag falls into the slag pot by manually aligning it with the slag outlet. First, the temperature of the reduced slag is high and personnel cannot get close. Second, the slag pot is too long, resulting in insufficient space on site and poor operator vision. The disadvantage is that the exhaust gas and dust cannot be collected when the slag is discharged, and the environmental protection problem cannot be solved. The slag discharge time is long, the utilization of the residual heat of the reduced slag is low, the slag discharge time is long and the reduction time is short, the labor intensity of the workers is high, the efficiency is low, and the production cost is high. Summary of the invention

[0004] The purpose of the utility model is to provide an automatic slag discharge control system for a vertical tank reduction furnace to solve the above-mentioned problems existing in the prior art, solve the industry pain points such as difficult environmental control, high energy consumption, and low production efficiency, while greatly reducing labor intensity and improving product quality.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vertical pot reduction furnace slag discharge automatic control system, comprising at least one vertical pot reduction furnace block group, a guide rail, a slag transport trolley, a high-temperature conveying chain, a magnesium slag waste heat boiler and a slag cooler, a slag transport trolley is arranged below each vertical pot reduction furnace block group, each slag transport trolley is slidably arranged on the guide rail, a high-temperature conveying chain is arranged below one end of the guide rail, a magnesium slag waste heat boiler is arranged below the output end of the high-temperature conveying chain, and the output end of the magnesium slag waste heat boiler is connected to the slag cooler;

[0007] Each of the vertical reduction furnace zones includes at least two groups of reduction tanks, each group of reduction tanks includes two reduction tanks arranged side by side, an indicator light is provided at each group of reduction tanks, and a first sensing device is provided under each reduction tank.

[0008] The working process and principle of the above structure are as follows:

[0009] When the reduction tank of a certain vertical tank reduction furnace group needs to discharge slag, the slag transport trolley returns from the waiting position to the bottom of the reduction tank that needs to discharge slag through the guide rail; when the first sensing device receives an instruction so that the two indicator lights of the reduction tank of the vertical tank reduction furnace group receive an instruction to flash, the slag discharger prepares to discharge the reduction slag; when the slag transport trolley safely enters the monitoring area of ​​the sensing device, the two indicator lights of the reduction tank that needs to discharge slag receive an instruction to turn green and the slag discharger starts to discharge the reduction slag; when the reduction slag is discharged, the two indicator lights turn from bright to dark, and then when they turn bright again, the slag discharge is completed; the slag transport trolley filled with reduction slag is transported to the high-temperature conveyor chain through the guide rail; the reduction slag is sent to the magnesium slag waste heat boiler and the slag cooler through the high-temperature conveyor chain to complete the waste heat utilization, and the empty bucket slag transport trolley returns to the waiting area to prepare for the next cycle, which solves the industry pain points such as difficult environmental control, high energy consumption, and low production efficiency, while greatly reducing labor intensity and improving product quality.

[0010] Furthermore, six vertical pot reduction furnace groupings are provided, and the six vertical pot reduction furnace groupings are arranged adjacent to each other. Two guide rails are provided below each vertical pot reduction furnace group, and the corresponding slag transport trolley is provided on two adjacent guide rails.

[0011] The setting of six vertical drum reduction furnace blocks enables higher reduction efficiency and greater production volume.

[0012] Furthermore, the slag transport car includes a car body, rollers are rotatably arranged on both sides of the car body, two rollers are respectively rollingly arranged on two guide rails, a slag storage bin is respectively arranged on the car body corresponding to the position of each group of two reduction tanks, and a discharge control valve is respectively arranged at the bottom of each slag storage bin of the car body.

[0013] The slag transport trolley runs to the bottom of the reduction tank, and the top of the slag storage bin arranged in the car body receives the reduced slag discharged from the reduction tank. When it reaches above the high-temperature conveyor chain, the discharge control valve at the bottom of the slag transport trolley opens, so that the reduced slag in the slag storage bin automatically falls onto the high-temperature conveyor chain by gravity.

[0014] Furthermore, the guide rail is an I-beam, one end of which is located below the vertical tank reduction furnace group, and the other end is arranged above the high-temperature conveying chain, and the middle part of the guide rail is a waiting area section.

[0015] The waiting area section is mainly for the slag transport vehicles to wait and stay when not working.

[0016] Furthermore, a second induction device is provided above the input end of the high-temperature conveying chain.

[0017] When the slag transport trolley enters the sensing area of ​​the second sensing device, the discharge control valve at the bottom of the slag transport trolley opens, allowing the reduced slag to automatically fall onto the high-temperature conveyor chain by gravity.

[0018] Beneficial effect: The utility model uses the following method: when the reduction tank of a certain vertical tank reduction furnace group needs to discharge slag, the slag transport trolley returns from the waiting position to the bottom of the reduction tank that needs to discharge slag through the guide rail; when the first sensing device receives an instruction so that the two indicator lights of the reduction tank of the vertical tank reduction furnace group receive an instruction to flash, the slag discharger prepares to discharge the reduced slag; when the slag transport trolley safely enters the monitoring area of ​​the sensing device, the two indicator lights of the reduction tank that needs to discharge slag receive an instruction to turn green and the slag discharger starts to discharge the reduced slag; when the reduced slag is discharged, the two indicator lights change from bright to dark, and then when they become bright again, the slag discharge is completed; the slag transport trolley filled with reduced slag is transported to the high-temperature conveyor chain through the guide rail; the reduced slag is sent to the magnesium slag waste heat boiler and the slag cooler through the high-temperature conveyor chain to complete the waste heat utilization, and the empty bucket slag transport trolley returns to the waiting area to prepare for the next cycle, which solves the industry pain points such as difficult environmental control, high energy consumption, and low production efficiency, while greatly reducing labor intensity and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the overall structure of the utility model;

[0020] Figure 2 This is the overall structural front view of the utility model;

[0021] Figure 3 It is a top view of the vertical tank reduction furnace group in the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the reduction tank discharge in the utility model;

[0023] Figure 5 It is a schematic diagram of the front and rear end components of the medium and high temperature conveyor chain of the utility model.

[0024] Figure numerals: 1. vertical tank reduction furnace zone group; 101. reduction tank; 102. indicator light; 103. first sensing device; 2. guide rail; 3. slag transport trolley; 301. vehicle body; 302. roller; 303. slag storage bin; 304. discharge control valve; 4. high-temperature conveying chain; 5. magnesium slag waste heat boiler; 6. slag cooler; 7. second sensing device. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model. Example

[0026] like Figure 1-Figure 5 As shown, this embodiment provides a vertical pot reduction furnace slag discharge automatic control system, comprising at least one vertical pot reduction furnace block group 1, a guide rail 2, a slag transport trolley 3, a high-temperature conveying chain 4, a magnesium slag waste heat boiler 5 and a slag cooler 6, a slag transport trolley 3 is arranged below each vertical pot reduction furnace block group 1, each slag transport trolley 3 is slidably arranged on the guide rail 2, a high-temperature conveying chain 4 is arranged below one end of the guide rail 2, a magnesium slag waste heat boiler 5 is arranged below the output end of the high-temperature conveying chain 4, and the output end of the magnesium slag waste heat boiler 5 is connected to the slag cooler 6;

[0027] Each vertical reduction furnace zone group 1 includes at least two groups of reduction tanks 101 , each group of reduction tanks 101 includes two reduction tanks 101 arranged side by side, an indicator light 102 is provided at each group of reduction tanks 101 , and a first sensing device 103 is provided under each reduction tank 101 .

[0028] The working process and principle of the above structure are as follows:

[0029] When the reduction tank 101 of a certain vertical tank reduction furnace group 1 needs to discharge slag, the slag transport trolley 3 returns from the waiting position to the bottom of the reduction tank 101 that needs to discharge slag through the guide rail 2; when the first sensing device 103 receives an instruction so that the two indicator lights 102 of the reduction tank 101 of the vertical tank reduction furnace group 1 receive an instruction to flash, the slag discharger prepares to discharge the reduced slag; when the slag transport trolley 3 safely enters the monitoring area of ​​the sensing device, the two indicator lights 102 of the reduction tank 101 that needs to discharge slag receive an instruction to turn green, and the slag discharger starts to discharge the reduced slag; when discharging the reduced slag, the two indicator lights 102 change from bright to dark, and then when they become bright again, the slag discharge is completed; the slag transport trolley 3 filled with reduced slag is transported to the high-temperature conveyor chain 4 through the guide rail 2; the reduced slag is sent to the magnesium slag waste heat boiler 5 and the slag cooler 6 through the high-temperature conveyor chain 4 to complete the waste heat utilization, and the empty bucket slag transport trolley 3 returns to the waiting area to prepare for the next cycle, which solves the industry pain points such as difficult environmental control, high energy consumption, and low production efficiency, while greatly reducing labor intensity and improving product quality.

[0030] In another embodiment of the present invention, Figure 1-Figure 5 As shown, there are six vertical pot reduction furnace block groups 1 , and the six vertical pot reduction furnace block groups 1 are arranged closely together. Two guide rails 2 are arranged under each vertical pot reduction furnace block group 1 , and the corresponding slag transport trolley 3 is arranged on two adjacent guide rails 2 .

[0031] The arrangement of six vertical drum reduction furnace block groups 1 enables higher reduction efficiency and greater production volume.

[0032] In another embodiment of the present invention, Figure 1-Figure 5 As shown, the slag transport vehicle 3 includes a vehicle body 301, rollers 302 are rotatably arranged on both sides of the vehicle body 301, and the two rollers 302 are respectively rollingly arranged on two guide rails 2, and a slag storage bin 303 is respectively arranged at the position corresponding to each group of two reduction tanks 101 on the vehicle body 301, and a discharge control valve 304 is respectively arranged at the lower part of each slag storage bin 303 of the vehicle body 301.

[0033] The slag transport trolley 3 runs to the bottom of the reduction tank 101, and the top of the slag storage bin 303 arranged in the car body 301 receives the reduced slag discharged from the reduction tank 101. When it reaches above the high-temperature conveying chain 4, the discharge control valve 304 at the bottom of the slag transport trolley 3 opens, so that the reduced slag in the slag storage bin 303 automatically falls onto the high-temperature conveying chain 4 by gravity.

[0034] In another embodiment of the present invention, Figure 1-Figure 5 As shown, the guide rail 2 is an I-beam, one end of the guide rail 2 is located below the vertical tank reduction furnace group 1, and the other end is arranged above the high-temperature conveying chain 4, and the middle part of the guide rail 2 is a waiting area section.

[0035] The waiting area section is mainly for the slag transport vehicle 3 to wait and stay when not working.

[0036] In another embodiment of the present invention, Figure 1-Figure 5 As shown, a second induction device 7 is arranged above the input end of the high-temperature conveying chain 4 .

[0037] When the slag transport trolley 3 enters the sensing area of ​​the second sensing device 7, the discharge control valve 304 at the bottom of the slag transport trolley 3 opens, so that the reduced slag automatically falls onto the high-temperature conveying chain 4 by gravity;

[0038] A slag discharging method of a slag discharging automatic control system for a vertical tank reduction furnace comprises the following steps:

[0039] Each vertical reduction furnace group 1 is equipped with a slag transport trolley 3, and each vertical reduction furnace group 1 only allows one group of reduction tanks 101 to discharge slag at any time;

[0040] After a reduction cycle, the qualified ball material from the raw material workshop is reduced to form crystalline magnesium. The furnace worker opens the tank cover, takes out the magnesium crystallization barrel and crystallizer, lifts the central tube to remove the slag, and the waste slag automatically falls into the slag transport trolley 3 for external treatment.

[0041] When the reduction tank 101 of a vertical reduction furnace block group 1 needs to be slag-discharged, the furnace worker opens the lower cover plate to take out the crystallizer and the fire baffle, and the slag transport trolley 3 returns from the waiting position to the bottom of the reduction tank 101 that needs to be slag-discharged via the guide rail 2;

[0042] When the first sensing device 103 receives an instruction to make the two indicator lights 102 of the reduction tank 101 of the vertical tank reduction furnace block group 1 flash, the slag discharger is ready to discharge the reduction slag;

[0043] When the slag transport trolley 3 safely enters the monitoring area of ​​the induction device, the two indicator lights 102 of the reduction tank 101 that needs to release the slag receive instructions and turn green, the slag release worker starts to release the reduction slag;

[0044] When the reducing slag is discharged, the two indicator lights 102 change from bright to dark, and then turn bright again when the slag discharge is completed;

[0045] The slag transport trolley 3 filled with reduced slag is transported to the high-temperature conveyor chain 4 through the guide rail 2;

[0046] When the slag transport trolley 3 enters the sensing area of ​​the second sensing device 7, the discharge control valve 304 at the bottom of the slag transport trolley 3 opens, so that the reduced slag automatically falls onto the high-temperature conveying chain 4 by gravity;

[0047] The reduced slag is sent to the magnesium slag waste heat boiler 5 and the slag cooler 6 through the high-temperature conveyor chain 4 to complete the waste heat utilization, and the empty bucket slag transport trolley 3 returns to the waiting area to prepare for the next cycle.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertical tank reduction furnace slag discharge automatic control system, characterized in that: It includes at least one vertical pot reduction furnace group, a guide rail, a slag transport trolley, a high-temperature conveying chain, a magnesium slag waste heat boiler and a slag cooler. A slag transport trolley is arranged below each vertical pot reduction furnace group. Each slag transport trolley is slidably arranged on the guide rail. A high-temperature conveying chain is arranged below one end of the guide rail. A magnesium slag waste heat boiler is arranged below the output end of the high-temperature conveying chain. The output end of the magnesium slag waste heat boiler is connected to the slag cooler. Each of the vertical reduction furnace zones includes at least two groups of reduction tanks, each group of reduction tanks includes two reduction tanks arranged side by side, an indicator light is provided at each group of reduction tanks, and a first sensing device is provided under each reduction tank.

2. The vertical tank reduction furnace slag discharge automatic control system according to claim 1, characterized in that: There are six vertical pot reduction furnace groupings, and the six vertical pot reduction furnace groupings are arranged closely together. Two guide rails are arranged under each vertical pot reduction furnace group, and the corresponding slag transport trolley is arranged on two adjacent guide rails.

3. The vertical pot reduction furnace slag discharge automatic control system according to claim 2, characterized in that: The slag transport car includes a car body, rollers are rotatably arranged on both sides of the car body, two rollers are respectively rollingly arranged on two guide rails, a slag storage bin is respectively arranged on the car body corresponding to the position of each group of two reduction tanks, and a discharge control valve is respectively arranged at the bottom of each slag storage bin of the car body.

4. The vertical tank reduction furnace slag discharge automatic control system according to claim 1, characterized in that: The guide rail is an I-beam, one end of which is located below the vertical tank reduction furnace group, and the other end is arranged above the high-temperature conveying chain, and the middle part of the guide rail is a waiting area section.

5. The vertical pot reduction furnace slag discharge automatic control system according to claim 1, characterized in that: A second induction device is arranged above the input end of the high-temperature conveying chain.

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