CN211526448U - Heat-preservation oxidation cooling fire cabinet and smelting system - Google Patents
Heat-preservation oxidation cooling fire cabinet and smelting system Download PDFInfo
- Publication number
- CN211526448U CN211526448U CN202020048345.5U CN202020048345U CN211526448U CN 211526448 U CN211526448 U CN 211526448U CN 202020048345 U CN202020048345 U CN 202020048345U CN 211526448 U CN211526448 U CN 211526448U
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- cabinet
- cabinet body
- cooling
- flue gas
- flue
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- 238000001816 cooling Methods 0.000 title claims abstract description 61
- 238000003723 Smelting Methods 0.000 title claims abstract description 43
- 238000004321 preservation Methods 0.000 title claims abstract description 27
- 230000003647 oxidation Effects 0.000 title claims abstract description 26
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 47
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000003546 flue gas Substances 0.000 claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 9
- 238000005192 partition Methods 0.000 claims description 26
- 230000001590 oxidative effect Effects 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 13
- 239000011229 interlayer Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000779 smoke Substances 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 8
- 230000002829 reductive effect Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The application provides a heat preservation oxidation cooling fire cabinet and system of smelting, heat preservation oxidation cooling fire cabinet is used for connecting the flue of admitting air of the smelting furnace that volatilizees and the exhaust flue that is used for connecting the sack room of the intercommunication cabinet body including the cabinet body that is hollow structure, the intercommunication cabinet body. The internal separation mechanism that is arranged in reducing the flue gas velocity of flow and makes the material in the flue gas subside in the bottom of the cabinet body and carry out the postcombustion that is equipped with at the top of the cabinet body and carries out refrigerated cooling body to the flue gas. The flue gas is internal from the flue that admits air entering cabinet, and under the effect of separation mechanism, therefore the flue gas velocity of flow reduces and the material subsides on the bottom of the cabinet body, because the distance of cooling body distance bottom is far away, therefore mainly cools off the flue gas among the cooling process, and is less to the influence of the material on the bottom. The materials can still keep higher temperature for secondary combustion, and the materials do not need to be put into a volatilization smelting furnace again for smelting. Thereby saving a large amount of manpower and material resources and reducing the production cost.
Description
Technical Field
The application belongs to the field of metallurgical equipment, and more specifically relates to a heat preservation oxidation cooling fire cabinet and a smelting system.
Background
The smelting system comprises a volatilization smelting furnace, a fire cabinet and a bag distribution chamber. The materials used in the volatilization smelting furnace are generally blocky, and the fuel is coke. The materials are added from the top of the furnace to form a material column. Air is blown in from a lower tuyere, and coke is combusted in a tuyere area of the furnace body to form a high-temperature smelting area. And oxidizing the material in a volatilization smelting furnace to produce metal oxide. However, the materials inevitably contain some powder-like fine particles, and the powder materials are not as long as entering the furnace or being taken away by the flue gas into the fire box due to the light weight and insufficient combustion time in the furnace.
The existing fire cabinet is provided with a plurality of water cooling structures for the whole body to cool the flue gas, so as to avoid the damage of the cloth bag chamber caused by overhigh temperature of the flue gas. The flue gas enters the fire cabinet, is rapidly cooled and solidified, and can not be subjected to secondary combustion of materials. And after cooling flue gas enters the cloth bag chamber, unburned materials are collected by the cloth bag and put into the volatilization smelting furnace again for smelting. However, the re-melting requires a large amount of labor and material resources, which increases the cost.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of this application is to provide a heat preservation oxidation cooling fire cabinet to solve the technical problem that the complete material that does not burn among the prior art need to drop into the smelting furnace that volatilizees again and smelt.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: the utility model provides a heat preservation oxidation cooling fire cabinet, heat preservation oxidation cooling fire cabinet is including the cabinet body that is hollow structure, the intercommunication cabinet body be used for connecting the intake flue of the smelting stove that volatilizees and the exhaust flue that is used for connecting the cloth bag room of the intercommunication cabinet body.
The internal separation mechanism that is arranged in reducing the flue gas velocity of flow and makes the material in the flue gas subside in the bottom of the cabinet body and carry out the postcombustion that is equipped with at the top of the cabinet body and carries out refrigerated cooling body to the flue gas.
Optionally, the blocking mechanism is a middle partition plate arranged in the cabinet body, adjacent middle partition plates are arranged in a staggered manner, and projections of radial sections of the cabinet body are partially overlapped.
Optionally, the intermediate partitions are arranged in the cabinet body in an opposite and staggered manner, and are uniformly distributed along the extending direction of the cabinet body.
Optionally, the wall plate, the middle partition plate and the bottom of the cabinet body are made of temperature-resistant alloy materials.
Optionally, a fire cabinet door for collecting materials after secondary combustion is arranged at the bottom of the wall plate of the cabinet body.
Optionally, the thermal insulation oxidation cooling fire cabinet further comprises a stand column for supporting the cabinet body.
Optionally, the cooling mechanism is an interlayer arranged at the top of the cabinet body and used for containing cooling water, and the height of the interlayer is 245-255 mm.
Optionally, the cabinet body comprises a plurality of sequentially communicated segments, and the segments are in a zigzag shape to form the blocking mechanism.
Optionally, the air inlet flue and the exhaust flue are respectively arranged at two ends of the cabinet body, the air inlet flue and the exhaust flue respectively comprise an inclined section and a vertical section which are sequentially arranged, and the vertical sections are communicated with the cabinet body.
A smelting system comprises a volatilization smelting furnace, the heat-preservation oxidation cooling fire cabinet and a cloth bag chamber, wherein the heat-preservation oxidation cooling fire cabinet is connected with the volatilization smelting furnace through an air inlet flue and is connected with the cloth bag chamber through an exhaust flue.
The application provides a heat preservation oxidation cooling fire cabinet's beneficial effect lies in: compared with the prior art, this application heat preservation oxidation cooling fire cabinet, it is internal that the flue gas gets into the cabinet from the flue that admits air, under the effect of separation mechanism, therefore the flue gas velocity of flow reduces the material and subsides on the bottom of the cabinet body, because the distance of cooling body distance bottom is far away, therefore mainly cools off the flue gas among the cooling process, and the influence to the material on the bottom is less. The materials can still keep higher temperature for secondary combustion, and the materials do not need to be put into a volatilization smelting furnace again for smelting. Thereby saving a large amount of manpower and material resources and reducing the production cost.
The beneficial effect of the smelting system that this application provided lies in: compared with the prior art, the smelting system can reduce the process production cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a heat-preservation oxidation cooling fire cabinet provided in an embodiment of the present application;
FIG. 2 is a top view of the insulated oxidizing cooling fire cabinet of FIG. 1;
FIG. 3 is a side view of the insulated oxidizing cooling fire cabinet of FIG. 1.
Wherein, in the figures, the respective reference numerals:
100-a cabinet body; 200-an air inlet flue; 300-an exhaust flue; 400-intermediate partition board; 500-a cooling mechanism; 110-fire cupboard door; 120-wall plate; 130-column.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Referring to fig. 1 and fig. 3 together, the heat preservation oxidation cooling fire cabinet provided in the embodiment of the present application will be described. The heat-preservation oxidation cooling fire cabinet comprises a cabinet body 100 with a hollow structure, an air inlet flue 200 communicated with the cabinet body 100 and used for connecting a volatilization smelting furnace, and an exhaust flue 300 communicated with the cabinet body 100 and used for connecting a cloth bag chamber. The cabinet body 100 is provided with a separation mechanism for reducing the flow rate of the flue gas to enable the material in the flue gas to settle at the bottom of the cabinet body 100 for secondary combustion, and the top of the cabinet body 100 is provided with a cooling mechanism 500 for cooling the flue gas.
The cabinet 100 has a closed hollow structure except for the intake stack 200 and the exhaust stack 300. The cabinet 100, the air intake flue 200 and the exhaust flue 300 form a flue gas channel. The flue gas is discharged from the volatilization smelting furnace, enters the cabinet 100 through the air inlet flue 200, passes through the exhaust flue 300 in the cabinet 100 and is discharged into the bag distribution chamber. The curve marked a in the figure is a schematic flow diagram of the flue gas. The air intake duct 200 and the air exhaust duct 300 may be respectively and independently disposed on an end surface of the cabinet 100, or a position of the cabinet 100 near the end surface.
The main function of the blocking mechanism is to increase the resistance of the smoke in the cabinet 100 and reduce the flow speed of the smoke. After the flue gas flow rate is reduced, the material carrying capacity is reduced, and the material sinks to the bottom of the cabinet body 100 under the action of gravity. The blocking mechanism may be a partition board disposed inside the cabinet 100, or the hollow structure of the cabinet 100 may be non-linear, such as curved or broken lines. On one hand, the blocking mechanism directly blocks the smoke, so that the flow direction of the smoke is changed and continuously impacts the partition plate or the wall body of the cabinet body 100 in the flowing process of the smoke, and the loss kinetic energy flow rate is reduced in the process. On the other hand, the flow distance of the flue gas is increased, and the flow distance is lengthened, so that the flow speed of the flue gas is reduced to a certain extent.
The cooling mechanism 500 is disposed at the top of the cabinet 100, for example, extending along the smoke flowing section at the top of the cabinet 100, and the smoke goes upward and the material settles at the bottom because the smoke has lower density than the material. Therefore, the cooling mechanism 500 is close to the flue gas and far from the material, mainly cooling the flue gas, and basically not affecting the temperature of the material. The material can still be kept close to the temperature in the volatilization smelting furnace, and secondary combustion is carried out on the bottom. After the combustion is finished, the smelting effect basically the same as that of the volatilization smelting furnace can be achieved, so that the step of collecting materials from the cloth bag chamber and putting the materials into the volatilization smelting furnace again for smelting is omitted, a large amount of manpower and material resources are saved, and the production cost is reduced. And the material deposits on the fire cabinet bottom, and the solid content in the flue gas reduces, and the solid material that the sack chamber was collected also reduces, and the reducible sack chamber pours out the frequency of solid material, also reduces intensity of labour, has saved the human cost.
The application provides a heat preservation oxidation cooling fire cabinet's beneficial effect lies in: compared with the prior art, this application heat preservation oxidation cooling fire cabinet, flue gas from the flue 200 that admits air get into the cabinet body 100 in, under the effect of separation mechanism, therefore the material subsides on the bottom of the cabinet body 100 of flue gas velocity of flow reduction, because the distance of cooling body 500 distance bottom is far away, therefore mainly cool off the flue gas among the cooling process, and the influence to the material on the bottom is less. The materials can still keep higher temperature for secondary combustion, and the materials do not need to be put into a volatilization smelting furnace again for smelting. Thereby saving a large amount of manpower and material resources and reducing the production cost.
Optionally, referring to fig. 1, the blocking mechanism is a middle partition board 400 disposed in the cabinet 100, adjacent middle partition boards 400 are disposed in a staggered manner, and there is a partial overlap in the projection of the radial section of the cabinet 100.
The intermediate partition 400 is provided to form the blocking mechanism, which may not be formed by the cabinet 100 itself in irregular shapes such as a curved line shape and a broken line shape, and thus the cabinet 100 may be formed in a regular shape such as a rectangular parallelepiped structure or a cylindrical structure. The whole external shape of the heat-preservation oxidation cooling fire cabinet is regular, and the installation and maintenance are convenient. Of course, the intermediate partition 400 may be provided when the cabinet 100 itself has an irregular shape such as a curved line or a broken line.
The adjacent middle partitions 400 are staggered, and the cabinet 100 is a rectangular parallelepiped structure. Referring to fig. 1, in this view, for convenience of description, the side adjacent to the paper surface is a front wall plate 120, and the other side is a rear wall plate 120. Two adjacent intermediate partitions 400 are not on the same wall panel 120, and if one of the intermediate partitions 400 is provided with the front wall panel 120, the adjacent intermediate partition 400 may be provided on the rear wall panel 120, on the top or below. The radial direction of the cabinet body 100 is the airflow flowing direction, and the projections of the adjacent middle partition boards 400 on the radial section of the cabinet body 100 are partially overlapped, that is, any middle partition board 400 can cause certain obstruction to the smoke flowing through the adjacent middle partition board 400, so that the smoke cannot flow linearly.
Alternatively, referring to fig. 1, the middle partitions 400 are oppositely and alternately arranged in the cabinet 100 and are uniformly distributed along the extending direction of the cabinet 100.
The adjacent intermediate partitions 400 are disposed oppositely and alternately, i.e., distributed on the opposite wall panels 120 of the cabinet body 100, such as on the top and bottom, respectively, and also distributed on the front wall panel 120 and the rear wall panel 120, respectively, as shown in fig. 1. In the mode, the change of the flow direction of the flue gas is large, and the flue gas flows in an S shape. The middle partition boards 400 are uniformly distributed along the extending direction of the cabinet body 100, that is, all the middle partition boards 400 are uniformly distributed at equal intervals on the whole, which is beneficial to the uniform reduction of the flue gas flow rate.
Optionally, the wall plate 120, the middle partition plate 400 and the bottom of the cabinet 100 are made of a temperature-resistant alloy material.
Antimony, gold and other precious metals are mostly subjected to rough smelting by a volatilization smelting furnace, for example, if a cabinet body 100 made of refractory materials such as refractory bricks is adopted, a plurality of gaps inevitably exist between the refractory bricks, and the precious metals fall into the gaps to cause loss. The cabinet body 100 made of the temperature-resistant alloy material does not have the above gap, which is beneficial to recovering the metal after secondary combustion.
Optionally, referring to fig. 1, a fire door 110 for collecting the post-combustion material is opened at the bottom of the wall plate 120 of the cabinet body 100. The fire door 110 is normally closed, and after the materials are combusted for the second time, the fire door 110 is opened to recover the materials, so that the operation is convenient.
Optionally, referring to fig. 1-3, the thermal insulation oxidation cooling fire cabinet further includes a column 130 for supporting the cabinet body 100. The cabinet body 100 is arranged on the upright post 130, the cabinet body 100 is not directly contacted with the ground, and the problem that the material secondary combustion is insufficient due to the fact that the bottom of the cabinet body 100 is cooled too fast is avoided.
Optionally, referring to fig. 1, the cooling mechanism 500 is an interlayer disposed at the top of the cabinet 100 and containing cooling water, and the height of the interlayer is 245-255 mm.
The cooling mechanism 500 of this design simple structure both can guarantee that the flue gas cooling is not overcooled, causes the material temperature to hang down unable postcombustion excessively, can avoid the flue gas temperature too high again, causes the sack of sack room to damage.
Optionally, the cabinet 100 comprises a plurality of sequentially connected segments, which are in the shape of a broken line to form the blocking mechanism. The whole body is in a zigzag shape, and the direction of the flue gas is changed at each intersection of the sections in the mode, so that the flow speed of the flue gas can be well reduced.
Alternatively, referring to fig. 1, the air intake duct 200 and the air exhaust duct 300 are respectively disposed at two ends of the cabinet 100, and the air intake duct 200 and the air exhaust duct 300 each include an inclined section and a vertical section that are sequentially disposed, and the vertical sections are communicated with the cabinet 100.
According to the heat-preservation oxidation cooling fire cabinet, the air inlet flue 200 and the air outlet flue 300 are respectively arranged at the two ends of the cabinet body 100, so that the length of the cabinet body 100 is fully utilized, and the flowing distance of smoke in the cabinet body 100 is as long as possible. When the flue gas enters, the flue gas enters the vertical section from the inclined section, and the first flow direction change and flow speed reduction occur. The vertical section is vertically communicated with the cabinet body 100, so that the flow direction of the smoke is changed by 90 degrees in a reverse direction, and the flow speed of the smoke can be well reduced. Similarly, when the flue gas is exhausted, the flue gas undergoes a similar process of decreasing flow velocity in the exhaust stack 300.
A smelting system comprises a volatilization smelting furnace, the heat-preservation oxidation cooling fire cabinet and a cloth bag chamber, wherein the heat-preservation oxidation cooling fire cabinet is connected with the volatilization smelting furnace through an air inlet flue 200 and is connected with the cloth bag chamber through an exhaust flue 300.
The beneficial effect of the smelting system that this application provided lies in: compared with the prior art, the smelting system can reduce the process production cost.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A heat preservation oxidation cooling fire cabinet which is characterized in that: the heat-preservation oxidation cooling fire cabinet comprises a cabinet body in a hollow structure, an air inlet flue communicated with the cabinet body and used for connecting a volatilization smelting furnace, and an exhaust flue communicated with the cabinet body and used for connecting a cloth bag chamber;
the internal separation mechanism that is arranged in reducing the flue gas velocity of flow and makes the material in the flue gas subside in the bottom of the cabinet body and carry out the postcombustion that is equipped with of cabinet, the top of the cabinet body is equipped with carries out refrigerated cooling body to the flue gas.
2. A thermal insulating oxidizing cooling fire cabinet according to claim 1, characterized in that: the separation mechanism is arranged on intermediate partitions in the cabinet body, the adjacent intermediate partitions are arranged in a staggered mode, and projections of the radial cross sections of the cabinet body are partially overlapped.
3. A thermal insulating oxidizing cooling fire cabinet according to claim 2, characterized in that: the middle partition plates are oppositely and staggered in the cabinet body and are uniformly distributed along the extending direction of the cabinet body.
4. A thermal insulating oxidizing cooling fire cabinet according to claim 2, characterized in that: the wall plate, the intermediate baffle plate and the bottom of the cabinet body are all made of temperature-resistant alloy materials.
5. A thermal insulating oxidizing cooling fire cabinet according to claim 1, characterized in that: and a fire cabinet door for collecting materials after secondary combustion is arranged at the bottom of the wall plate of the cabinet body.
6. A thermal insulating oxidizing cooling fire cabinet according to claim 1, characterized in that: the heat-preservation oxidation cooling fire cabinet also comprises a stand column for supporting the cabinet body.
7. A thermal insulating oxidizing cooling fire cabinet according to claim 1, characterized in that: the cooling mechanism is arranged on the top of the cabinet body and is provided with an interlayer containing cooling water, and the height of the interlayer is 245-255 mm.
8. A thermal insulating oxidizing cooling fire cabinet according to claim 1, characterized in that: the cabinet body includes a plurality of subsections that communicate in proper order, the subsection is the broken line form and forms separation mechanism.
9. A heat-insulating oxidizing cooling fire cabinet according to any one of claims 1 to 8, characterized in that: the air inlet flue with the exhaust flue set up respectively in the both ends of the cabinet body, the air inlet flue with the exhaust flue all includes the slope section and the vertical section that set gradually, the vertical section with the cabinet body intercommunication.
10. A smelting system, characterized by: the heat-preservation oxidizing and cooling fire cabinet comprises a volatilization smelting furnace, a heat-preservation oxidizing and cooling fire cabinet and a cloth bag chamber, wherein the heat-preservation oxidizing and cooling fire cabinet is connected with the volatilization smelting furnace through an air inlet flue and is connected with the cloth bag chamber through an exhaust flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020048345.5U CN211526448U (en) | 2020-01-09 | 2020-01-09 | Heat-preservation oxidation cooling fire cabinet and smelting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020048345.5U CN211526448U (en) | 2020-01-09 | 2020-01-09 | Heat-preservation oxidation cooling fire cabinet and smelting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211526448U true CN211526448U (en) | 2020-09-18 |
Family
ID=72449396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020048345.5U Expired - Fee Related CN211526448U (en) | 2020-01-09 | 2020-01-09 | Heat-preservation oxidation cooling fire cabinet and smelting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211526448U (en) |
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2020
- 2020-01-09 CN CN202020048345.5U patent/CN211526448U/en not_active Expired - Fee Related
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Granted publication date: 20200918 |