Cinder ladle insertion type cooling device

Abstract

The invention discloses a cinder ladle plug-in type cooling device, and relates to the technical field of copper slag slow cooling, the cinder ladle plug-in type cooling device comprises a mounting module, an air supply module and an air guide module, the mounting module can be detachably mounted on a cinder ladle, an air outlet of the air supply module is communicated with an air inlet of the air guide module, and an air outlet of the air guide module extends into the cinder ladle; and the air guide module is mounted on the mounting module, is used for supplying air into the cinder ladle and is mounted on the mounting module. The cooling efficiency and the cooling effect can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of copper slag slow cooling, in particular to a slag ladle insertion type cooling device. Background Art

[0002] At present, the copper smelting industry mainly uses the copper slag slow cooling process for copper metal recovery. This process uses the slag bag as a container and adopts a combination of air cooling and water cooling. Among them, the air cooling stage often takes 6h-16h. During this process, the temperature drop rate of the copper slag is controlled in an appropriate range, which is conducive to the aggregation of copper grains and is conducive to the subsequent flotation recovery of copper.

[0003] The prior art mainly accelerates the cooling rate of the water cooling process and the slow cooling process and shortens the cooling time by adding a cooling device to the outer wall of the slag bag. However, in the above cooling method, since the cooling water only exists on the periphery of the slag bag, the middle part of the slag bag cannot be effectively cooled, which leads to low cooling efficiency and uneven temperature inside the slag bag, affecting the cooling effect. Summary of the invention

[0004] The object of the present invention is to provide a slag ladle insert cooling device to solve the problems existing in the above-mentioned prior art and improve the cooling efficiency and cooling effect.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a slag bag insert cooling device, comprising an installation module, an air supply module and an air guide module. The installation module can be detachably installed on the slag bag, the air outlet of the air supply module is connected to the air inlet of the air guide module, the air outlet of the air guide module extends into the interior of the slag bag and is used to supply air into the slag bag, and the air guide module is installed on the installation module.

[0007] Preferably, the installation module includes a cover plate, and a plurality of positioning pins are provided on the outer edge of the cover plate. The cover plate can be snapped into the upper opening of the slag bag, and the positioning pins can be snapped onto the side wall of the slag bag, and the air guide module is installed on the cover plate.

[0008] Preferably, a reinforcing rib is further provided on the upper end of the cover plate, and the reinforcing rib is a cross structure.

[0009] Preferably, the air supply module includes a blower, a bellows and an air supply pipe, the air outlet of the blower is connected to the air inlet of the bellows, and the blower is used to deliver air into the air supply pipe through the bellows, the air outlet of the air supply pipe is connected to the air inlet of the air guide module, and the blower is also equipped with a variable frequency motor.

[0010] Preferably, the bellows is funnel-shaped, and the diameter of the bellows gradually increases from the blower toward the air supply pipe.

[0011] Preferably, a plurality of guide vanes are installed in the wind box.

[0012] Preferably, the mounting module is connected to a support, and the blower is mounted on the support.

[0013] Preferably, the air guide module includes a plurality of air blast sleeves, and the number of air supply pipes is multiple, and the plurality of air blast sleeves corresponds to the plurality of air supply pipes one-to-one, and the air outlet of the air supply pipe is connected to the air inlet of the air blast sleeve.

[0014] Preferably, the blast sleeve includes a ventilation straight pipe and an outer sleeve, the outer sleeve is sleeved on the outer circumference of the ventilation straight pipe, and there is a ventilation gap between the inner wall of the outer sleeve and the outer wall of the ventilation straight pipe, and the upper end of the ventilation straight pipe is connected to the lower end of the air supply pipe, and the lower end of the ventilation straight pipe extends toward the bottom surface of the slag bag.

[0015] Preferably, the outer sleeve is in the shape of an inverted frustum, and the outer wall of the outer sleeve is welded to the mounting module, and the upper end of the inner wall of the outer sleeve is connected to the upper end of the outer wall of the ventilation straight pipe via a connecting piece.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The slag bag insertion cooling device provided by the present invention has a mounting module that can be detachably mounted on the slag bag, an air outlet of the air supply module is connected to an air inlet of the air guide module, the air outlet of the air guide module extends into the interior of the slag bag and is used to supply air into the slag bag, and the air guide module is directly inserted into the liquid slag bag, which increases the cooling depth, is beneficial to the overall cooling of the copper slag, solves the problem of uneven cooling caused by local cooling, and at the same time, avoids adding a power device for drilling holes in the slag shell; the arrangement of the variable frequency fan in the air supply module can control the cooling rate by adjusting the air supply volume in the air cooling stage, accelerate heat dissipation, shorten the air cooling stage while ensuring the copper flotation recovery rate, and the air guide module is installed on the mounting module to improve the stability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a front view of the slag ladle insertion cooling device of the present invention;

[0020] Figure 2 A top view of the slag ladle insertion cooling device of the present invention;

[0021] Figure 3 It is a right side view of the slag ladle insertion cooling device of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the blast sleeve in the present invention;

[0023] In the figure: 100-cover plate, 110-positioning foot, 120-reinforcement rib, 200-air blast sleeve, 210-ventilation straight pipe, 220-outer sleeve, 230-connecting piece, 300-blower, 310-air supply pipe, 320-support, 330-bellows box, 340-guide vane, 400-slag bag. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The object of the present invention is to provide a slag ladle insert cooling device to solve the problems existing in the prior art and improve the cooling efficiency and cooling effect.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1-Figure 4 As shown, the present embodiment provides a slag bag insert cooling device, comprising a mounting module, an air supply module and an air guide module. The mounting module can be detachably mounted on the slag bag 400, the air outlet of the air supply module is connected to the air inlet of the air guide module, the air outlet of the air guide module extends into the interior of the slag bag 400, and is used to supply air into the slag bag 400. The air guide module is directly inserted into the liquid slag bag 400, which increases the cooling depth, is beneficial to the overall cooling of the copper slag, and solves the problem of uneven cooling caused by local cooling. At the same time, it also avoids adding a power device for drilling holes in the slag shell, simplifies the structure, and the air guide module is installed on the mounting module to improve the stability of the overall structure.

[0028] Specifically, the installation module includes a cover plate 100, and a plurality of positioning pins 110 are provided on the outer edge of the cover plate 100, and the positioning pins 110 are preferably four. The cover plate 100 can be snapped into the upper opening of the slag bag 400, and the positioning pins 110 can be snapped onto the side wall of the slag bag 400, thereby achieving stable fixation of the cover plate 100 at the opening of the slag bag 400. At the same time, the snap-on connection method can facilitate installation and disassembly, and realize the reuse of the device. The air guide module is installed on the cover plate 100 to achieve fixation of the air guide module.

[0029] A reinforcing rib 120 is also provided at the upper end of the cover plate 100. The reinforcing rib 120 is a cross structure to improve the strength of the cover plate 100 and prevent deformation of the cover plate 100. The cover plate 100 is preferably a circular slag bag 400 cover plate 100, made of heat-resistant alloy steel with a thickness of 5mm-20mm.

[0030] The air supply module includes a blower 300, a bellows 330 and an air supply pipe 310. The air outlet of the blower 300 is connected to the air inlet of the bellows 330, and the air outlet of the blower 300 is guided by the bellows 330 and sent into the air supply pipe 310. The air outlet of the air supply pipe 310 is connected to the air inlet of the air guide module. The blower 300 is also equipped with a variable frequency motor. The variable frequency fan can control the cooling rate by adjusting the air volume blown by the blower 300 during the air cooling stage, accelerate the heat dissipation, and shorten the air cooling stage while ensuring the copper flotation recovery rate.

[0031] The bellows 330 is funnel-shaped, and the diameter of the bellows 330 gradually increases from the blower 300 to the air supply pipe 310 , so that the wind can enter the air supply pipe 310 after being guided by the bellows 330 .

[0032] A plurality of guide vanes 340 are installed in the wind box 330 to divide the wind, and the divided wind enters each air supply pipe 310 respectively.

[0033] The mounting module is connected to a support 320, and the blower 300 is mounted on the support 320 to improve the stability of the blower 300 during operation. The blower 300 uses a variable frequency fan and is placed on the support 320. At the same time, the air volume is distributed through the guide vane 340 in the air box 330. The support 320 is 2000mm-3000mm long and is made of heat-resistant alloy steel.

[0034] The air guide module includes a plurality of blast sleeves 200, a plurality of air supply pipes 310, and the plurality of blast sleeves 200 correspond to the plurality of air supply pipes 310 one by one, and the air outlet of the air supply pipe 310 is connected to the air inlet of the blast sleeve 200, and then by setting a plurality of blast sleeves 200 and evenly distributing the blast sleeves 200, there are more heat exchange positions in the slag bag 400, and the overall heat exchange inside the slag bag 400 is strengthened, thereby improving the cooling efficiency and cooling uniformity. The number of blast sleeves 200 can be adaptively changed according to the size of the designed slag bag 400.

[0035] The blast sleeve 200 includes a ventilation straight pipe 210 and an outer sleeve 220. The outer sleeve 220 is sleeved on the outer periphery of the ventilation straight pipe 210, and there is a ventilation gap between the inner wall of the outer sleeve 220 and the outer wall of the ventilation straight pipe 210. When ventilating, the wind first enters the outer sleeve 220 through the inside of the ventilation straight pipe 210, and then is discharged through the ventilation gap, thereby strengthening the cooling inside the copper molten slag. At the same time, the blown hot air can be used for waste heat recovery. The upper end of the ventilation straight pipe 210 is connected to the lower end of the air supply pipe 310, and the lower end of the ventilation straight pipe 210 extends to the bottom surface of the slag bag 400 to achieve cooling inside the slag bag 400. As a preferred embodiment, the ventilation straight pipe 210 and the outer sleeve 220 located in the center are longer, and the lower end can extend to the lower center position in the slag bag 400, which can enhance the heat exchange intensity at the slag core.

[0036] The number of outer sleeves 220 is preferably 1-13, including 1 in the center of the cover plate 100, or 1 in the center of the cover plate 100 and 2 to 12 in the outer circle.

[0037] The ventilation straight pipe 210 is made of heat-resistant alloy steel, has openings at both ends, an outer diameter of 40mm-80mm, an inner diameter of 34mm-74mm, and a length of 2000mm-3800mm.

[0038] The outer sleeve 220 is made of heat-resistant alloy steel. The upper end of the outer sleeve 220 is open and the lower end is closed. The outer diameter of the upper end is 100mm-200mm, the inner diameter is 92mm-192mm, the outer diameter of the lower end is 60mm-100mm, the inner diameter is 52mm-92mm, and the length is 2000mm-3500mm.

[0039] The inverted truncated cone shape of the outer sleeve 220 facilitates the connection between the outer sleeve 220 and the ventilation straight pipe 210, and is also convenient for installation and disassembly. The outer wall of the outer sleeve 220 is welded to the installation module to fix the outer sleeve 220. The upper end of the inner wall of the outer sleeve 220 and the upper end of the outer wall of the ventilation straight pipe 210 are connected by a connector 230 to fix the two. The connector 230 is preferably a rib-type two-tube connection structure, and the connector 230 is welded between the outer sleeve 220 and the ventilation straight pipe 210.

[0040] When in use, the slag ladle insert cooling device of this embodiment is immediately inserted after the slag ladle 400 is connected with the slag, and the four positioning pins 110 on the cover plate 100 are used to realize the positioning of the cover plate 100, and the outer sleeve 220 and the ventilation straight pipe 210 are inserted into the corresponding positions in the copper slag of the slag ladle 400. After the installation is completed, the blower 300 is turned on and the air supply volume is adjusted to enhance the slow cooling inside the copper molten slag. Subsequently, the slag ladle 400 and the insert cooling device are transported to the corresponding slow cooling site by the slag transport vehicle.

[0041] During the slow cooling process, the cold air blown by the blower 300 is distributed through the guide plate 340 in the wind box 330, enters the internal ventilation straight pipe 210, and enters the outer sleeve 220 from the lower end of the ventilation straight pipe 210. The heat inside the slag bag 400 is transferred to the inner wall surface through the outer wall surface of the outer sleeve 220, and performs convection heat exchange with the internal cold air. The cold air absorbs heat and becomes hot air and blows out from the upper end of the outer sleeve 220, thereby accelerating the heat exchange inside the copper molten slag. The air supply of the blower 300 is adjusted at different slow cooling stages to ensure the subsequent copper slag flotation recovery rate while achieving the purpose of accelerating the air cooling slow cooling time and improving production efficiency.

[0042] Through the above design, the present embodiment does not need to perform dynamic drilling on the crust on the upper surface of the slag bag 400. When the copper slag is in liquid state, each blast sleeve 200 is directly inserted from the top. Then, under the action of the blower 300, the temperature drop rate of the copper molten slag in the air cooling stage is controlled. While ensuring the flotation recovery rate of the copper slag, the air cooling slow cooling time is greatly shortened, the actual production efficiency is improved, and the problems of long slow cooling time of the copper slag and large differences in temperature drop rates in different areas of the copper slag are solved.

[0043] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A slag ladle insertion cooling device, characterized in that: It includes an installation module, an air supply module and an air guide module. The installation module can be detachably installed on the slag bag. The air outlet of the air supply module is connected to the air inlet of the air guide module. The air outlet of the air guide module extends into the slag bag and is used to supply air to the slag bag. The air guide module is installed on the installation module.

2. The slag ladle insertion cooling device according to claim 1 is characterized in that: The installation module includes a cover plate, and a plurality of positioning pins are provided on the outer edge of the cover plate. The cover plate can be buckled on the upper opening of the slag bag, and the positioning pins can be clamped on the side wall of the slag bag. The air guide module is installed on the cover plate.

3. The slag ladle insertion cooling device according to claim 2 is characterized in that: The upper end of the cover plate is also provided with a reinforcing rib plate, and the reinforcing rib plate is a cross structure.

4. The slag ladle insertion cooling device according to claim 1 is characterized in that: The air supply module includes a blower, a bellows and an air supply pipe. The air outlet of the blower is connected to the air inlet of the bellows, and the blower is used to deliver air into the air supply pipe through the bellows. The air outlet of the air supply pipe is connected to the air inlet of the air guide module. The blower is also equipped with a variable frequency motor.

5. The slag ladle insertion cooling device according to claim 4 is characterized in that: The bellows is funnel-shaped, and the diameter of the bellows gradually increases from the blower toward the air supply pipe.

6. The slag ladle insertion cooling device according to claim 5, characterized in that: A plurality of guide vanes are installed in the wind box.

7. The slag ladle insertion cooling device according to claim 4, characterized in that: The mounting module is connected to a support, and the blower is mounted on the support.

8. The slag ladle insertion cooling device according to claim 4, characterized in that: The air guide module includes a plurality of air blast sleeves, and there are a plurality of air supply pipes, and the plurality of air blast sleeves correspond to the plurality of air supply pipes one by one, and the air outlet of the air supply pipe is connected to the air inlet of the air blast sleeve.

9. The slag ladle insertion cooling device according to claim 8, characterized in that: The blast sleeve includes a ventilation straight pipe and an outer sleeve, the outer sleeve is sleeved on the outer circumference of the ventilation straight pipe, and there is a ventilation gap between the inner wall of the outer sleeve and the outer wall of the ventilation straight pipe, the upper end of the ventilation straight pipe is connected to the lower end of the air supply pipe, and the lower end of the ventilation straight pipe extends toward the bottom surface of the slag bag.

10. The slag ladle insertion cooling device according to claim 9, characterized in that: The outer sleeve is in an inverted frustum shape, and the outer wall of the outer sleeve is welded to the mounting module. The upper end of the inner wall of the outer sleeve is connected to the upper end of the outer wall of the ventilation straight pipe via a connecting piece.

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