Smelting device

Abstract

The present application relates to a kind of smelting device, including furnace body, mobile platform and heating component, the furnace body includes hearth part and hearth part, the hearth part and the hearth part are disconnectedly connected and have connection state and split state, the mobile platform is equipped with the hearth part or the hearth part, the heating component is equipped with movable heating end, the heating end is disconnectedly installed in the hearth part of the furnace body in split state. Compared with the side-blown furnace in the related art, the smelting device of the present application can realize different use modes to work or work, not only can shorten the start-up time, but also can improve the convenience of observation, data acquisition and refractory replacement for molten pool, shorten the shutdown time between different test periods, improve the reliability and accuracy of experimental data, improve the efficiency of process test.

Description

Technical Field

[0001] This invention relates to the field of metallurgical technology, and more specifically to a metallurgical apparatus. Background Technology

[0002] Based on the advantages of side-blown smelting technology and combined with the actual needs of nickel slag treatment, this technology is used to melt and reduce nickel slag to produce low-nickel matte and recover valuable metals. To verify and implement this process route design, a semi-industrial trial is required. However, while the side-blown furnaces in the relevant technologies can meet the requirements for feeding the molten pool with the necessary process air and materials, starting the furnace requires creating a molten pool, resulting in slow heating, and stopping the furnace requires emptying the molten pool, leading to a slow cooling process, which makes it difficult to meet the requirements for rapid switching in the experimental cycle. Furthermore, traditional side-blown furnaces are all enclosed and fixed furnace bodies, making it difficult to directly observe or sample and analyze the refractory material inside the furnace. Summary of the Invention

[0003] This invention is based on the inventor's discoveries and understanding of the following facts and problems:

[0004] In experimental applications, traditional side-blown furnaces suffer from particularly slow start-up and shutdown processes, severely hindering rapid switching between experimental cycles and failing to meet the demands of frequent start-ups and shutdowns during testing. During the start-up phase, traditional side-blown furnaces require the construction of a molten pool, relying on the combustion of solid fuels such as firewood and coke for heating, a process that is cumbersome and extremely time-consuming. During the shutdown phase, traditional side-blown furnaces require the complete evacuation of the molten pool, and the subsequent cooling process is equally slow, making the entire shutdown process time-consuming and complex.

[0005] Traditional side-blown furnaces employ a closed, fixed furnace body structure. While this structure ensures sealing and thermal stability in industrial production, its disadvantages in experimental applications, particularly regarding observation and sampling analysis, are significant, severely impacting the accuracy and timeliness of experimental data. In terms of observation, the closed furnace body prevents operators from directly observing the furnace's internal conditions, forcing them to rely on indirect process parameters for estimation. This can easily lead to judgment biases and make it difficult to accurately capture critical points of refractory material loss. Regarding sampling analysis, traditional side-blown furnaces only allow sampling at specific ports. Because the distribution of the melt within the furnace cannot be observed, the sampling location and depth are difficult to control precisely, resulting in insufficient sample representativeness. This, in turn, affects the authenticity and reliability of experimental data such as refractory erosion and melt composition.

[0006] The present invention aims to at least partially solve one of the technical problems in the related art.

[0007] Therefore, embodiments of the present invention provide a smelting apparatus, including a furnace body, a movable platform, and a heating assembly. The furnace body includes a furnace cylinder section and a furnace chamber section, which are detachably connected and have a connected state and a separate state. The movable platform is provided with either the furnace cylinder section or the furnace chamber section. The heating assembly is provided with a movable heating end, which is detachably installed inside the furnace cylinder section of the furnace body in the separate state.

[0008] The smelting apparatus of this invention can be used for molten pool smelting process tests of materials, such as nickel slag smelting process tests. In multiple test cycles, the materials can be melted by heating components when the furnace body is in a split state, thereby completing the material temperature rise and shortening the furnace start-up time. The interior of the molten pool can be directly observed and collected by splitting the furnace body, ensuring the reliability and accuracy of experimental data. The refractory material of the furnace hearth can be replaced by splitting the furnace body to meet different test requirements.

[0009] Compared with the side-blown furnace in related technologies, the smelting apparatus of the present invention can operate in different modes, which can not only shorten the start-up time, but also improve the convenience of observation of the molten pool, data collection and refractory material replacement, shorten the downtime between different test cycles, improve the reliability and accuracy of experimental data, and improve the efficiency of process testing.

[0010] In some embodiments, the smelting apparatus includes a flue gas recovery assembly, which includes a drive member and a fume hood. The drive member has a movable end connected to the fume hood, and the fume hood is detachably fastened to the furnace cylinder portion located in the split state of the furnace body.

[0011] In some embodiments, the fume hood is provided with clearance holes that cooperate with the heating assembly.

[0012] In some embodiments, the heating assembly includes a lifting member, a clamping arm, and a conductive device. The output end of the lifting member is connected to the clamping arm, and the clamping arm is connected to the conductive device. The conductive device includes an electrode rod and a wire. The electrode rod forms the heating end, and the wire is used to connect to a power source.

[0013] In some embodiments, the furnace body includes a seal disposed between the furnace cylinder portion and the furnace chamber portion in the connected state.

[0014] In some embodiments, the sealant is a sealing filler layer, which is made of refractory mortar or ramming material.

[0015] In some embodiments, the movable platform is provided with the furnace cylinder section, and the furnace chamber section is provided with a support beam, which is fixedly installed.

[0016] In some embodiments, the furnace hearth portion is provided with a side-blowing assembly; and / or, the furnace chamber portion is provided with a top-blowing assembly.

[0017] In some embodiments, the furnace body includes a liquid cooling assembly, which includes a plurality of liquid cooling elements, and the plurality of liquid cooling elements are detachably disposed on the outer side of the furnace cylinder and / or the furnace chamber.

[0018] In some embodiments, the furnace cylinder portion is cylindrical and the furnace chamber portion is conical. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of a smelting apparatus according to an embodiment of the present invention, wherein the furnace body is in a connected state; Figure 2 This is a second schematic diagram of the smelting apparatus according to an embodiment of the present invention, wherein the furnace body is in a split state.

[0020] Figure label: 100. Smelting equipment, 1. Furnace body; 11. Furnace cylinder section; 111. Discharge port; 12. Furnace chamber section; 13. Seal; 14. Support beam; 15. Side injection assembly; 16. Refractory material; 17. Furnace top cover; 18. Liquid cooling element. 2. Mobile platform 3. Heating component; 31. Lifting component; 32. Clamping arm; 33. Conductive device; 331. Electrode rod; 4. Fume hood. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The smelting apparatus 100 of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown, the smelting apparatus 100 of this embodiment includes a furnace body 1, a movable platform 2, and a heating assembly 3. The furnace body 1 includes a furnace cylinder section 11 and a furnace chamber section 12, which are detachably connected and have both connected and separate states. The movable platform 2 is provided with either the furnace cylinder section 11 or the furnace chamber section 12. The heating assembly 3 is provided with a movable heating end, which is detachably installed within the furnace cylinder section 11 of the separate furnace body 1.

[0024] Specifically, the hearth section 11 is the molten pool part of the furnace body 1, and the hearth section 11 is provided with a discharge port 111. The furnace chamber section 12 is the gas phase part of the furnace body 1, and the furnace chamber section 12 is located above the hearth section 11. The top of the furnace chamber section 12 is provided with a furnace top cover 17, and the furnace top cover is provided with a feeding port. Both the hearth section 11 and the furnace chamber section 12 are provided with refractory material 16.

[0025] The smelting apparatus 100 of this embodiment of the invention has at least the following operating modes: Operating mode 1: The furnace body 1 is in the connected state, the furnace cylinder 11 and the furnace chamber 12 are connected, the material is added through the feeding port of the furnace top cover 17, the furnace body 1 works normally, and after the material reaction is complete, the slag and metal are discharged from their respective discharge ports, completing one test cycle.

[0026] Operating Mode 2: During operation in Operating Mode 1, when it is necessary to observe the internal condition of the furnace hearth section 11, the movable platform 2 moves the furnace hearth section 11 or the furnace chamber section 12 located on it, separating the furnace hearth section 11 and the furnace chamber section 12, exposing the interior of the furnace hearth section 11, and then observing and sampling the interior of the furnace hearth section 11 to complete the acquisition of experimental data inside the molten pool. Afterwards, the movable platform 2 moves the furnace hearth section 11 or the furnace chamber section 12 located on it to reconnect the furnace hearth section 11 and the furnace chamber section 12, restoring the integrity of the furnace body, and the furnace body continues to operate normally.

[0027] Usage Mode 3: After using Mode 1, the furnace cylinder section 11 is emptied, and the moving platform 2 moves the furnace cylinder section 11 or the furnace chamber section 12 located on it, thereby separating the furnace cylinder section 11 and the furnace chamber section 12, exposing the interior of the furnace cylinder section 11, and allowing personnel to enter the furnace cylinder section 11 to perform operations such as inspection and replacement of the refractory material 16.

[0028] Usage Mode 4: After using Mode 3, or when the furnace hearth section 11 and furnace chamber section 12 are in a separate state and the furnace needs to be restarted, the material is directly added through the open furnace hearth section 11. The heating end of the heating component 3 is moved into the furnace hearth section 11, and the material in the furnace hearth is quickly melted by the heating component 3. After the material in the furnace hearth section 11 is heated, the heating end is detached from the furnace hearth section 11. The moving platform 2 drives the furnace hearth section 11 or furnace chamber section 12 located on it to move, so as to realize the connection between the furnace hearth section 11 and the furnace chamber section 12, restore the integrity of the furnace body 1, and the furnace body 1 continues to work normally.

[0029] The smelting apparatus 100 of this invention can be used for molten pool smelting process tests of materials, such as nickel slag smelting process tests. In multiple test cycles, the materials can be melted by the heating component 3 when the furnace body 1 is in the split state, thereby completing the temperature rise of the materials and shortening the furnace start-up time. The interior of the molten pool can be directly observed and collected by splitting the furnace body 1, ensuring the reliability and accuracy of experimental data. The refractory material 16 of the furnace cylinder section 11 can be replaced by splitting the furnace body 1 to meet different test requirements.

[0030] Compared with the side-blown furnace in related technologies, the smelting apparatus 100 of this embodiment can operate in different modes, which can not only shorten the furnace start-up time, but also improve the convenience of observing the molten pool, collecting data and replacing refractory materials, shorten the furnace shutdown time between different test cycles, improve the reliability and accuracy of experimental data, and improve the efficiency of process testing.

[0031] In some embodiments, such as Figure 1 and Figure 2 As shown, the hearth section 11 is cylindrical, and the furnace chamber section 12 is conical. The furnace body 1 eliminates dead zones in the molten pool and enhances stirring through the circular hearth section 11, while the upwardly enlarging furnace chamber section 12 reduces the flue gas velocity to settle dust and alleviate thermal stress deformation of the furnace walls.

[0032] In such Figure 1 and Figure 2 In the illustrated embodiment, both the furnace hearth portion 11 and the furnace chamber portion 12 have circular cross-sections. In other embodiments, the cross-sections of the furnace hearth portion 11 and the furnace chamber portion 12 may be elliptical or rectangular.

[0033] In some embodiments, the furnace hearth section 11 is provided with a side blowing assembly 15. The side blowing assembly 15 completes the side blowing refining mode.

[0034] In other embodiments, the furnace section 12 is provided with a top blowing assembly. The top blowing assembly completes the top blowing mode.

[0035] In some other embodiments, the furnace hearth section 11 is provided with a side blowing assembly 15, and the furnace chamber section 12 is provided with a top blowing assembly. The side blowing and top blowing work together to complete the top and side combined blowing mode of the furnace body.

[0036] In some embodiments, the movable platform 2 is provided with a furnace cylinder section 11, and the furnace chamber section 12 is provided with a support beam 14, which is fixedly installed. The furnace cylinder section 11 is located below the furnace chamber section 12, and the furnace chamber section 12 is fixed by the support beam 14. The movable platform 2 facilitates the movement of the furnace cylinder section 11, which helps to reduce the cost of splitting the furnace body 1.

[0037] In some embodiments, the furnace body 1 includes a seal 13 disposed between the furnace hearth section 11 and the furnace chamber section 12 in the connected state. The seal 13 ensures the sealing of the connection between the furnace hearth section 11 and the furnace chamber section 12, preventing the leakage of flue gas from the furnace body 1 and ensuring the normal operation of the smelting process in the furnace body 1. When it is necessary to separate the furnace hearth section 11 and the furnace chamber section 12, the seal 13 is removed first, and then the furnace hearth section 11 is moved.

[0038] In some embodiments, the sealant 13 is a sealing filler layer, which is made of refractory mortar or ramming mix. The application process of refractory mortar and ramming mix is ​​simple: after the hearth section 11 and the furnace section 12 are connected, the prepared refractory mortar or ramming mix is ​​applied to the gap between the hearth section 11 and the furnace section 12, and after curing, a sealing filler layer is formed. When it is necessary to separate the hearth section 11 and the furnace section 12, the sealant 13 can be removed by breaking the sealing filler layer with a hammer.

[0039] The sealing element 13 forms a sealing filler layer through refractory mortar or ramming material. Its sealing and removal processes are simple and easy to operate, with low cost and good sealing effect.

[0040] In some embodiments, the furnace body 1 includes a liquid cooling assembly, which includes a plurality of liquid cooling elements 18, and the plurality of liquid cooling elements 18 are detachably disposed on the outer side of the furnace cylinder portion 11 and / or the furnace chamber portion 12.

[0041] Specifically, the liquid cooling element 18 employs different materials and manufacturing processes, such as steel plate water jackets, cast copper water jackets, or rolled copper water jackets, to adapt to the cooling requirements of different scenarios. The cooling medium can also be softened water, deionized water, or mineral oil. The liquid cooling element 18 can come in various types, each with a different heat exchange area. Liquid cooling elements of the same type can be assembled and installed on the hearth section 11 and / or the furnace chamber section 12. The liquid cooling element 18 can be removed, added, replaced, and its position adjusted according to experimental requirements and changes in actual smelting conditions. By quickly adjusting the configuration of the liquid cooling element 18, the overall heat dissipation rate and local heat dissipation intensity of the hearth section 11 and furnace chamber section 12 can be precisely changed, flexibly controlling the temperature field distribution in each area of ​​the furnace body 1. It not only meets the high-efficiency heat dissipation and temperature control requirements under high-temperature and high-intensity smelting conditions, but also adapts to the mild heat preservation conditions under low-load and stable production conditions. It effectively balances the heat loss and gain of the furnace body, extends the service life of the refractory lining, and greatly improves the operational stability and adaptability of the entire smelting equipment.

[0042] In some embodiments, the heating assembly 3 includes a lifting member 31, a clamping arm 32, and a conductive device 33. The output end of the lifting member 31 is connected to the clamping arm 32, and the clamping arm 32 is connected to the conductive device 33. The conductive device 33 includes an electrode rod 331 and a wire. The electrode rod 331 forms a heating end, and the wire is used to connect to a power source. The lifting member 31 drives the clamping arm 32 to rise and fall, simultaneously driving the conductive device 33 to rise and fall, thereby driving the electrode rod 331 to rise and fall. In mode 4, the furnace cylinder 11 and the furnace chamber 12 are in a separate state. The moving platform 2 moves the furnace cylinder 11 to the heating component 3, so that the furnace cylinder 11 and the electrode rod 331 are opposite each other in the vertical direction. Then, the lifting component 31 moves the electrode rod 331 downward, so that the electrode rod 331 is inserted into the furnace cylinder 11. The conductive device 33 is turned on, and the material in the furnace cylinder 11 is quickly melted by electric heat. After the heating is completed, the lifting component 31 moves the electrode rod 331 up and separates it from the furnace cylinder 11. The moving platform 2 moves the furnace cylinder 11 to realize the connection between the furnace cylinder 11 and the furnace chamber 12, restore the integrity of the furnace body, and the furnace body continues to work normally.

[0043] In some other embodiments, the heating assembly 3 includes a robotic arm and a conductive device 33. The robotic arm is a six-axis robotic arm that holds the conductive device 33 and moves it, causing the electrode rod 331 to be inserted into and detached from the furnace cylinder 11.

[0044] In some embodiments, the smelting apparatus 100 includes a flue gas recovery assembly, which includes a drive member and a fume hood 4. The drive member has a movable end connected to the fume hood 4, and the fume hood 4 is detachably fastened to the furnace cylinder portion 11 of the furnace body 1 in its split state. When the furnace body 1 is in its split state, the furnace cylinder portion 11 is open, and the drive member moves the fume hood 4 onto the furnace cylinder portion 11, whereby the fume hood 4 fastens to the opening of the furnace cylinder portion 11, thereby constraining and recovering the flue gas escaping at low altitudes.

[0045] In some specific embodiments, the driving component is a lifting device, such as a crane.

[0046] In some embodiments, the fume hood 4 is provided with a clearance hole, which cooperates with the heating assembly 3. Specifically, the clamping arm 32 and the conductive device 33 of the heating assembly 3 cooperate with the clearance hole in the use mode 4. When the heating assembly 3 heats the material in the furnace cylinder 11, the driving member drives the fume hood 4 to be fastened at the opening of the furnace cylinder 11. The fume hood 4 avoids the clamping arm 32 and the conductive device 33 through the clearance hole, thus avoiding interference with the clamping arm 32 and the conductive device 33.

[0047] In some embodiments, the smelting apparatus 100 includes a monitoring component, which includes a temperature sensor and a motion sensor. A first temperature sensor is provided on the cooling medium return pipe of the liquid cooling component to monitor the return temperature of the cooling medium; a second temperature sensor is provided on the surface of both the furnace cylinder 11 and the furnace chamber 12 to monitor the surface temperature of the furnace cylinder 11 and the furnace chamber 12, thereby determining the working environment of the furnace body 1 and predicting the risk of leakage; a first motion sensor is provided at the connection between the furnace cylinder 11 and the furnace chamber 12 to monitor the deformation at the connection position; a second motion sensor is provided on the moving platform 2 to monitor the movement trajectory of the moving platform 2, so as to accurately control the movement of the moving platform 2 and ensure safe and stable operation; a third motion sensor is provided on the clamping arm 32 to detect the movement trajectory of the clamping arm 32, so as to accurately control the movement trajectory of the electrode rod 331 and ensure safe and stable operation.

[0048] The smelting apparatus 100 of the present invention will now be described with specific examples.

[0049] The experimental raw material is nickel smelting slag from a smelter, with a total amount of 400-500 tons. The total experimental period is approximately 90 days. Six experiments are planned to be conducted within the experimental period, each lasting approximately 3 to 12 days. During the intervals between experiments, data collection, furnace lining replacement, and laboratory analysis will be carried out.

[0050] During the smelting test, the mixed nickel slag, lump coal, and limestone required for the test were intermittently added to furnace body 1 through the charging port on the furnace top cover. Simultaneously, oxygen-enriched air (approximately 949.43 Nm³ / h) and natural gas (approximately 100 Nm³ / h) were blown into furnace body 1 for material processing. The gas entered the furnace through a side spray gun and reacted with the materials. The reaction temperature inside the furnace was controlled at 1350-1400℃, yielding high-temperature low-nickel matte and molten slag. The molten slag was discharged every 4 hours, with a discharge volume of 3.4 tons each time. The low-nickel matte was discharged every 3 days, with a discharge volume of approximately 1.71 tons. The flue gas generated during the test was sent to the flue gas treatment system through the flue gas outlet at the top of furnace body 1. During furnace shutdown, the hearth section 11 was separated from the furnace chamber section 12 to complete data collection and furnace lining replacement. The electrode system was then used to complete the material processing and heating, quickly entering the next test cycle. During the shutdown period, the fume hood 4 is placed over the opening of the furnace cylinder section 11 to contain and recover the low-altitude flue gas.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A smelting apparatus (100), characterized in that, include: The furnace body (1) includes a furnace cylinder section (11) and a furnace chamber section (12), which are detachably connected and have a connected state and a separate state; A movable platform (2) is provided with the furnace cylinder section (11) or the furnace chamber section (12). Heating assembly (3) is provided with a movable heating end, which is detachably installed in the furnace cylinder (11) of the furnace body (1) in a split state.

2. The smelting apparatus (100) according to claim 1, characterized in that, The flue gas recovery assembly includes a drive unit and a fume hood (4). The drive unit is provided with a moving end, which is connected to the fume hood (4). The fume hood (4) is detachably fastened to the furnace cylinder (11) of the furnace body (1) in the split state.

3. The smelting apparatus (100) according to claim 2, characterized in that, The fume hood (4) is provided with a clearance hole, which cooperates with the heating component (3).

4. The smelting apparatus (100) according to claim 1, characterized in that, The heating assembly (3) includes a lifting member (31), a clamping arm (32), and a conductive device (33). The output end of the lifting member (31) is connected to the clamping arm (32), and the clamping arm (32) is connected to the conductive device (33). The conductive device (33) includes an electrode rod (331) and a wire. The electrode rod (331) forms the heating end, and the wire is used to connect to a power source.

5. The smelting apparatus (100) according to claim 1, characterized in that, The furnace body (1) includes a seal (13) disposed between the furnace cylinder (11) and the furnace chamber (12) in the connected state.

6. The smelting apparatus (100) according to claim 5, characterized in that, The sealing element (13) is a sealing filler layer, which is made of refractory mortar or ramming material.

7. The smelting apparatus (100) according to claim 1, characterized in that, The movable platform (2) is provided with the furnace cylinder (11), and the furnace chamber (12) is provided with a support beam (14), which is fixedly installed.

8. The smelting apparatus (100) according to claim 1, characterized in that, The furnace cylinder section (11) is provided with a side blowing assembly (15); and / or, the furnace chamber section (12) is provided with a top blowing assembly.

9. The smelting apparatus (100) according to claim 1, characterized in that, The furnace body includes a liquid cooling assembly, which includes a plurality of liquid cooling elements (18). The plurality of liquid cooling elements (18) are detachably disposed on the outer side of the furnace cylinder (11) and / or the furnace chamber (12).

10. The smelting apparatus (100) according to claim 1, characterized in that, The furnace cylinder (11) is cylindrical, and the furnace chamber (12) is conical.

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