257 results about "Molten bath" patented technology

The invention discloses a heat-resistant aluminum alloy material and a preparation method and application thereof, and belongs to the technical field of additive manufacturing aluminum alloy materials. The heat-resistant aluminum alloy material comprises the following components in percentage by mass: 0.5-6% of Fe, 0.5-6% of Cr, 0.5-3% of Ti, less than or equal to 2% but not equal to 0 of Mn, less than or equal to 2% but not equal to 0 of Sc, less than or equal to 2% but not equal to 0 of Zr and the balance of Al and inevitable impurities. By optimizing the component proportion, the preparation method and the like, in the microstructure of the heat-resistant aluminum alloy material, the interior of the heat-resistant aluminum alloy material is of a bimodal grain structure, the boundary of a molten pool is mainly isometric crystals, the center of the molten pool is columnar crystals, and an icosahedron nanometer quasi-crystal phase and an intermetallic compound strengthening phase are further distributed on the boundary of the molten pool and the center of the molten pool in a dispersed mode; the problems that when a traditional aluminum alloy material is used for additive manufacturing forming, hot cracks or macroscopic cracks occur, and the mechanical property of a formed product is poor are fundamentally solved.

The invention relates to the technical field of metal composite materials, in particular to a metal composite material production process dynamic simulation method based on digital twinning. Comprising the following steps: constructing a digital twin model comprising a physical entity layer, a virtual model layer and a connection layer, and establishing a Fourier neural operator model embedded with a Navier Stokes equation and a heat conduction equation constraint; real-time molten pool monitoring data are mapped into model input through a connecting layer, and advanced time step deduction is executed by using a deep learning model to predict the state of a molten pool; based on the differentiable characteristic of a physical information neural operator, calculating the gradient of a prediction state and an ideal target by using an automatic differential algorithm, generating a process parameter field through reverse iteration updating, and discretizing the process parameter field into a galvanometer control instruction; and when the risk of aggregation of the reinforced phase particles is predicted to exist, automatically generating a swing scanning strategy to realize active suppression. The method gives consideration to simulation precision and real-time performance.

The invention provides a nickel-based rare earth composite powder material for high-speed laser cladding and a preparation method of a nickel-based rare earth composite coating, and relates to the technical field of laser cladding and metal surface modification. The nickel-based rare earth composite coating takes Inconel 625 nickel-based alloy as a matrix phase material; a trace amount of rare earth oxide Y2O3 is introduced into a powder system to serve as a second phase enhancing component, and the material is prepared and formed at a time under the condition of a high-speed laser cladding process; in the high-speed laser cladding process, due to high scanning speed, low heat input per unit length and high cooling rate, metal liquid in a molten pool has the characteristic of rapid solidification; the rare earth oxide Y2O3 can stably exist in a molten pool, the particle surface of the rare earth oxide Y2O3 provides a large number of heterogeneous nucleation cores for the alloy solidification process, meanwhile, grain growth is restrained through the grain boundary pinning effect, and therefore the solidification structure form of the nickel-based cladding coating is remarkably improved.

The invention relates to a metal additive manufacturing three-dimensional temperature field Gaussian process prediction method, belongs to the technical field of material science, and particularly relates to a metal additive manufacturing three-dimensional temperature field prediction method. Logarithmic transformation is adopted to preprocess a temperature field, and prediction difficulty caused by extreme gradient near a molten pool is avoided; dividing the overall computational domain into a plurality of sub-domains by adopting a domain decomposition strategy to reduce the problem dimension; for each sub-domain, further combining singular value decomposition to extract a temperature field reduced-order base; establishing a local Gaussian process regression model based on a Maren kernel function and carrying out parallel training so as to establish rapid mapping from process parameters to reduced-order output; during online prediction, efficient and accurate prediction of a complete temperature field is realized through parallel calculation and full-field assembly of each local model.

The invention belongs to the technical field of metal additive manufacturing, and particularly relates to a metal additive manufacturing multi-field coupling problem numerical simulation method which is suitable for powder scale heat-fluid-solid coupling simulation in the metal additive manufacturing powder melting, flowing, solidification and deformation processes. The method is based on a superposition refinement thought, and a computational domain of a separation material is a dynamic superposition region of a basic region. The basic area is used for solving a macroscopic thermal-solid coupling process, the dynamic superposition area is used for solving a mesoscopic thermal-fluid-solid coupling process, and interfaces of the two areas are dynamically and fixedly connected, contacted and coupled. According to the method, the computing resources can be effectively distributed to the molten pool and important areas nearby the molten pool, and the computing efficiency is greatly improved.

A slag barrier plate for a side-blown melting furnace with a melting bath, characterized in that it comprises: a slag barrier unit (1) with a plate body (11) for holding back molten slag; a heat dissipation unit (2) comprising: a cooling water jacket (21) extending through the interior of the plate body (11) to continuously introduce cooling medium into the plate body (11) to lower its temperature; a distributor arrangement (22) arranged at the end of the cooling water jacket (21) to introduce the cooling medium into the cooling water jacket (21).

The utility model provides a vacuum induction furnace, which belongs to the technical field of metallurgy and comprises a vacuum induction furnace body and a siphon deslagging device arranged on the vacuum induction furnace body. The siphon deslagging device comprises a slag collecting and separating device and a deslagging channel; the slag collecting and separating device is arranged at the upper part of a molten pool of the vacuum induction furnace body; the deslagging channel comprises an inner channel vertically arranged in the side wall of a heating crucible of the vacuum induction furnace body, a transition channel communicated with the lower part of the inner channel and an outer channel connected with an outer port of the transition channel; the lower part of the outer channel is communicated with the outer port of the transition channel; and the pressure at the slag inlet at the upper part of the inner channel is greater than that at the slag outlet at the upper part of the outer channel. According to the utility model, the problems that in the metal smelting process of the vacuum induction furnace in the prior art, the slag is difficult to discharge, the slag and the gold are mixed out and the slag is difficult to continuously discharge under the vacuum condition due to poor fluidity of the slag and difficult separation of the slag and the gold can be solved.

A system and method for starting an electrolytic cell are disclosed. The system and method are particularly suitable for preheating an electrolytic cell or kettle having a cathode prior to installing a preheated anode in the cell for the production of metal (e.g., aluminum). The system includes one or more electric heaters installed in the cell in place of the anode assembly, and the system can be used with a dry bath or a liquid molten bath (e.g., cryolite). Preferably, the cell is preheated by as many cell preheaters as anode assemblies. Preferably, the cell preheaters are powered by the current available in the busbar of the kettle. The present invention is environmentally friendly as it is preferably suitable for preheating cells that work with inert anodes or oxygen evolving anodes. In addition, the startup method allows for optimizing / reducing the time required to start the electrolytic cell while ensuring that the material is located within the cell.

The invention relates to the technical field of heavy non-ferrous metal pyrometallurgy and process equipment, and discloses a large heavy non-ferrous metal bath smelting furnace heat flow accurate matching method and system, and the method comprises the steps: generating key state parameters, and completing the evaluation of the real-time heat state in the furnace; cooling water flow, heat source distribution and the like are used as control variables, comprehensive optimization of heat flow uniformity, structural safety and operation energy efficiency is used as a target for solving, and an optimal control instruction set is output; the optimal control instruction set is decomposed and issued to different execution layers, so that the heat dissipation intensity of each partition is adjusted; heat production-heat dissipation balance in the furnace is reconstructed, and matching of peak clipping and valley filling of heat flow distribution is achieved; after the new control action is executed, sensor data are collected. The system comprises a pump station, a variable frequency pump, a heat exchanger, a smelting furnace, a heat flow control unit, a temperature sensor, a flowmeter, a regulating valve and a control center. The smelting strength and the heat efficiency are improved on the premise of guaranteeing the service life of the furnace lining and the structural safety.

The invention provides a furnace body heat energy recovery device which is arranged on a furnace body with a smelting cavity, the smelting cavity is formed by dividing a molten pool and a furnace shell covering the molten pool, and the furnace body heat energy recovery device comprises a heat absorption mechanism located in the smelting cavity; the heat release mechanism is arranged on the outer side of the furnace body, the heat release mechanism communicates with the heat absorption mechanism, and the heat release mechanism is provided with a heat release structure for releasing heat energy; and the feeding mechanism is provided with a feeding structure and a preheating cavity for containing smelting materials, the feeding structure communicates with the preheating cavity and the smelting cavity, the heat release structure is arranged in the preheating cavity, and the problem that the waste heat recovery efficiency of the steel smelting furnace is low is solved.

Source: FR2832733 A1 Video sensors are used for controlling melting of aluminum in a furnace by producing images of the bath surface or the inner surface of the furnace walls. Melting of aluminum in a furnace comprises: (a) introducing solid aluminum into the furnace; (b) melting the aluminum to form a molten bath; (c) production of images of the bath surface or of the inner surface of the furnace (2) walls; (d) treating these images to identify the presence of solids or the formation of oxides on the bath surface or for identifying the presence of hot spots or hot zones or zones having a certain minimal temperature on the fumace walls; and (e) modifying at least one fumace operating condition as a function of this treatment of the images. Independent claims are also included for the following: (a) a device for detecting the surface state of a bath of aluminum or the state of the furnace walls in an aluminum melting furnace; and (b) an aluminum melting furnace incorporating this detection device.

The invention relates to the technical field of electric arc melting furnace control, and discloses a water-cooled furnace wall electric arc melting furnace system and method. The method comprises the steps of collecting a smelting furnace operation parameter set in real time; performing multi-region thermal load analysis on the water-cooled wall temperature gradient data to generate a thermal load distribution matrix, and performing harmonic characteristic decomposition on the arc current waveform data to generate a current harmonic characteristic set; performing space-time alignment matching processing on the two to form a smelting process coupling characteristic pattern; performing joint feature extraction on the molten pool liquid level fluctuation data and the raw material component spectral data to generate a melt state vector; inputting the coupling characteristic pattern and the melt state vector into a dynamic regulation and control decision network, and generating a multi-parameter cooperative control strategy comprising a water-cooling flow rate regulation instruction, an arc power regulation instruction and a feeding rate correction instruction; and according to the strategy, synchronous execution operation of water cooling system pump valve linkage control, arc generator impedance matching adjustment and raw material conveying belt frequency conversion speed regulation is triggered.

Described are steel production systems and methods, and a furnace and methods of using such furnace to produce steel. In some embodiments, the furnace may include a shell having a top portion and a bottom portion. There may be a roof connected to the top portion that can have feed ports for the introduction of a metal oxide into the furnace. The shell may include injectors that can inject a fluid into the furnace. The bottom portion may be connected to a hearth. The furnace can melt the metal oxide to form a molten bath in the hearth. The molten bath may have a slag layer and a metal layer. The fluid can reduce the metal oxide in the slag layer to form molten metal.

The invention relates to a method and a device (100) for producing a component (102) by means of an additive manufacturing method using an energy beam (114). The method comprises the steps of (a) providing a powder, (b) applying at least one first powder layer (110a) of the powder (110) to a construction platform (106) of a process chamber (104), (c) defining a target contour (120) of the component (102), wherein the target contour comprises a plurality of solid layers of the component (102), (d) melting at least one first predetermined region (116a) of the applied first powder layer (110a) by means of an energy beam (114) in such a way that the first predetermined region (116a) is transferred into a first solid layer (118a), (e) melting at least one second predetermined region (116b) of the applied first power layer (110a) by means of the energy beam (114) in such a way that a melt bath (122) of the melted powder (110) is produced, (f) calculating at least one transport vector (123) of the energy beam (114) depending on the target contour (120) of the component (102), and (g) moving the energy beam (114) according to a scanning vector (124) in such a way that melted material from the melt bath is guided, according to the calculated transport vector (123), from an actual position (125) to a target position (126) on or at the first solid layer (118a) in accordance with the target contour (120) and / or the second predetermined region is transferred into a solid layer region (133a) of the first solid layer (118a) in accordance with the target contour (120).

The application discloses an alloy vacuum separation furnace, which comprises a runner, a separation chamber and a mold system; the separation chamber comprises an isolation box, and an upper molten pool, an inclined part and a lower molten pool are arranged in the isolation box from top to bottom. The number of the inclined part is more than one, and the inclined part has an inclined surface. Alloy melt to be separated is poured into the upper molten pool through the runner; the upper molten pool and the lower molten pool are provided with plug parts; the melt in the upper molten pool can flow into the inclined part downstream of the upper molten pool by opening the plug part of the upper molten pool, and then flow into the lower molten pool through the inclined part. The mold system comprises a preparation chamber, a second isolation valve, a pouring chamber, a third isolation valve and a discharge chamber which are sequentially connected, and the pouring chamber is connected with the separation chamber. The melt in the lower molten pool can be quantitatively poured into a mold in the pouring chamber. The alloy vacuum separation furnace is continuously worked through the inclined part, the production efficiency is improved, and the alloy vacuum separation furnace is suitable for large-batch continuous production. The application further discloses an alloy separation method implemented by using the alloy vacuum separation furnace and a copper and zinc material.

The utility model discloses a natural gas melting furnace for melting aluminum ingots, and belongs to the technical field of metal melting equipment. The melting furnace comprises a box body and a furnace body, a liquid oxygen storage tank, a VPSA oxygen generator and a waste gas treatment box are integrated in the box body, and the liquid oxygen storage tank is connected with an oxygen supply pipeline through a vaporizer; the furnace body shell adopts a gradient refractory layer structure; the oxygen supply pipeline is of a Y-shaped parallel structure, a flame arrester and a dynamic pressure balance valve are arranged in the oxygen supply pipeline, and the oxygen flow is adjusted through linkage of a pressure sensor and a controller. A water-cooling observation window is arranged on the inner wall of the furnace body, and a thermal infrared imager is installed on the outer side to monitor the temperature of a molten pool and feed back and control combustion power. According to the utility model, efficient melting, safe oxygen supply and accurate temperature control are realized through structure optimization, and the device is suitable for continuous melting scenes of aluminum ingots.

The invention relates to the technical field of glass melting furnaces, in particular to an immersed combustion glass pre-melting system and a glass melting furnace feeding method.The immersed combustion glass pre-melting system comprises a plurality of pre-melting units separately arranged at an inlet of a main melting furnace; the melting temperatures of the plurality of pre-melting units are different, so that the glass liquid entering the main melting furnace generates a transverse temperature gradient for convection homogenization. Aiming at the problem that a pre-melting system in the prior art easily generates a flowing dead zone at a corner position, a molten pool is divided into a plurality of discrete pre-melting units, the volume of a single molten pool is reduced, so that the problem of non-uniform temperature conduction in the molten pool is avoided, and meanwhile, the pre-melting temperature of each pre-melting unit is controlled to have a certain difference, so that the pre-melting efficiency is improved. Therefore, when feeding is carried out on the main melting furnace, a specific temperature gradient is generated in the main melting furnace to enhance convection homogenization of molten glass among the pre-melting units, and the temperature and the distribution uniformity of raw materials are improved.

The invention relates to a method for producing a weld seam, which extends along a closed trajectory (54), by means of a laser welding machine (10) for connecting a first workpiece (12) and a second workpiece (14) together in a fluid-tight manner, comprising: providing the first workpiece (12) and the second workpiece (14), wherein at least one of the two workpieces (12, 14) is formed from a die-cast aluminium material or from a wrought aluminium alloy; directing a first laser beam (22) of the laser welding machine (10) and a second laser beam (24) of the laser welding machine (10) simultaneously onto the two workpieces (12, 14) such that two separate molten baths (58) are formed, in particular are formed simultaneously; and successively traversing at least one section (62) of the trajectory (54) with the first laser beam (22) and the second laser beam (24) such that the section (62) is traversed a first time by the first laser beam (22) and a second time by the second laser beam (24).

The invention relates to the field of metallurgy, and discloses a large-size maraging stainless steel bar and a preparation method thereof, the diameter of the bar is larger than or equal to 300 mm, and the method comprises a vacuum induction melting stage, a vacuum consumable remelting stage, a fast forging cogging stage and a precision forging forming stage; wherein the vacuum consumable remelting stage comprises an arcing stage, a stable smelting stage and a filling smelting stage; in the arc starting stage, a molten pool is formed by adopting a current of 8-12 kA; in the stable smelting stage, the smelting speed is 4.2-4.8 kg / min, the molten drop is 3-5 s <-1 >, the molten drop short-circuit time is 0.6-0.8 s, and inert gas is started to be filled for cooling after smelting is conducted by the preset weight; and in the filling smelting stage, inert gas filling is stopped, and the current and the melting speed are controlled to descend in a stepped mode. According to the method, the uniformity of components and structures can be improved, so that the mechanical property of the large-size maraging stainless steel bar is improved.

The present application relates to the technical field of steel metallurgy, and discloses a 5+1 converter oxygen lance system with efficient molten pool stirring and deep dephosphorization function, which comprises an oxygen lance body, a nozzle body and a group of spray holes arranged on the nozzle body, the group of spray holes comprises one central main spray hole and five peripheral spray holes, the five peripheral spray holes are uniformly distributed on the same circle with the central axis of the nozzle as the center, and the five peripheral spray holes and the central main spray hole form a 5+1 layout; the axis of the central main spray hole coincides with the central axis of the oxygen lance body or forms an angle of 0-3 degrees; the angle between the axes of the five peripheral spray holes and the central axis of the oxygen lance body is 10-18 degrees; the oxygen lance system further comprises an independent gas path control system, and the central main spray hole and the peripheral spray holes are respectively connected with independent gas supply pipelines; the present application adopts a composite flow field reconstruction principle to improve the stirring rate, enhances slag-gold emulsification, improves the dephosphorization reaction rate, realizes the collaborative optimization of slagging and dephosphorization through the synergy of zoned slagging and temperature control.

The invention is in the field of pyrometallurgy and describes a process for the recovery of lithium by fuming. The process comprises smelting Li-ion batteries or their waste in a furnace with slag formers, resulting in a molten bath with distinct alloy and slag phases, and flue dust. Notably, at least 30% of the lithium is transferred to the flue dust under the chosen conditions without adding alkali or earth alkali halides. Li can then be recovered from the flue dust, valuable metals, such as Co and / or Ni, can be recovered from the alloy, and the remaining slag can be used in new smelting or Li- fuming operations.

This invention belongs to the field of steel deoxidation technology, specifically a method for steel deoxidation, comprising the following steps: during the tapping process of a converter, when the molten steel reaches a preset position on the ladle, a carbonaceous deoxidizer is added to the surface of the molten steel in multiple batches for deoxidation; wherein the carbonaceous deoxidizer is calcined coal, and the particle size of the calcined coal is 2-5 mm. This invention, by selecting a specific carbon source with a specific particle size and adopting a strategy of adding it dynamically in batches, effectively avoids a surge in local carbon and oxygen concentration, fundamentally eliminating the rapid rise of the molten pool surface and steel splashing, thus ensuring production safety; by using calcined coal with specific purity and strength, its anti-pulverization ability and low impurity characteristics reduce the reaction runaway and oxide inclusion residues caused by secondary pulverization, significantly reducing smelting costs while ensuring high cleanliness and deoxidation efficiency.

The application discloses a low copper loss double-side blown bath smelting method and belongs to the technical field of copper pyrogenic smelting. The method constructs a vertical oxygen potential gradient in the same smelting furnace: 70%-85% of oxygen-rich air is blown into the tuyere at the lower part of the furnace body to form a strong oxidation smelting zone; and a reducing medium such as natural gas or pulverized coal is sprayed into the slag layer at the upper part of the furnace body to form a weak reduction clarification zone. The amount of the reducing medium sprayed is dynamically adjusted by on-line monitoring of the CO content in the flue gas or the Fe3O4 content in the slag, and the Fe3O4 content in the slag is controlled to be 3%-6%. The method efficiently reduces Fe3O4 in the slag into FeO, significantly reduces the viscosity of the molten slag, and improves the slag-ice-copper separation condition, so that the copper content in the discarded slag is stably reduced from more than 1.8% in the conventional method to less than 1.3%, and the metal recovery rate is improved. Meanwhile, the method realizes integration of smelting and tempering, simplifies the process, reduces energy consumption, and enhances the adaptability to complex raw materials.

The utility model discloses a kind of feeding structure of plasma melting furnace, and plasma melting furnace includes hearth, graphite cathode and molten pool liquid level of setting in hearth, the feeding structure includes feeding channel, feeding channel is obliquely arranged in the side wall of hearth, the inclination angle of feeding channel is set as 40 °±A, A is angle allowance, the plasma melting furnace of the utility model can greatly improve the distribution characteristics and movement process of ash slag particles by improving the height and angle of feeding port, improve ash slag melting reaction process and the solidification effect of molten slag on heavy metal, improve material melting rate so that it is fully utilized.

The invention provides a steel pipe electric arc welding device, which belongs to the technical field of steel pipe welding, and comprises a welding table, two groups of steel pipe clamping assemblies, a first driving assembly, a second driving assembly, a welding rod clamping assembly and a third driving assembly, the two steel pipe clamping assemblies are rotationally installed on the upper portion of the welding table and distributed oppositely, the two steel pipe clamping assemblies are used for clamping two steel pipes correspondingly, and the first driving assembly is arranged on the upper portion of the welding table and used for driving the two steel pipe clamping assemblies to rotate synchronously. The welding rod clamping assembly is arranged between the two steel pipe clamping assemblies. Compared with the prior art, automatic electric arc welding of the two steel pipes can be achieved, after the welding rods rotate by one circle around the two steel pipes, the remaining welding rods can be driven to be automatically and rapidly separated from a molten pool, and therefore the adhesion phenomenon of the welding rods is avoided, and the welding quality is improved.

The embodiment of the invention relates to the field of electrolytic production, recovery or refining of metal through a molten liquid electrolytic method, in particular to a feeding and discharging device of an anode assembly suitable for molten salt electrolytic refining equipment, and the feeding and discharging device is used for taking out residual materials after electrolysis of anode materials. The anode assembly comprises an anode basket, an anode supporting part used for supporting the anode basket and capable of moving downwards relative to the anode basket, and a hoisting matching part arranged at the top of the anode basket. The feeding and discharging device comprises a receiving container used for receiving residual materials; the hoisting part is used for enabling the anode assembly to be suspended right above the receiving container and enabling the anode supporting part to move downwards to a material pushing position relative to the anode basket under the action of pressure; and the material pushing part is used for pushing residual materials on the anode supporting part into the receiving container when the anode supporting part of the anode assembly moves to the material pushing position. According to the feeding and discharging device provided by the embodiment of the utility model, residual materials after electrolysis of anode materials contained in the anode assembly can be conveniently taken out.

The utility model discloses a combined type anti-splashing evaporation boat component which comprises a ceramic crucible and an evaporation boat, an evaporation groove is formed in the surface of the evaporation boat, the ceramic crucible is placed in the middle of the evaporation groove of the evaporation boat, a molten pool is arranged in the middle of the ceramic crucible, and flow guide openings are formed in the two sides of the molten pool respectively. According to the utility model, the ceramic crucible and the evaporation boat are additionally arranged, so that the temperature difference exists between the ceramic crucible and the evaporation boat, and the metal wires are converted from solid state to liquid state to gas state in a stepped manner and are transited stably, so that the splashing phenomenon is effectively inhibited, the film coating is more uniform, the film forming quality can be guaranteed, and the ceramic crucible and the evaporation boat are mutually independent, low in manufacturing difficulty and capable of being replaced independently; the mode of the assembly can protect a wire feeding area of the evaporation boat, prevent the wire feeding area from being corroded by molten metal liquid and influence the use and endurance life of the evaporation boat, the molten pool is arranged in the middle of the ceramic crucible, prevent the metal liquid from overflowing, prevent all the metal liquid from flowing into the evaporation tank from diversion ports on two sides, and improve the material utilization rate.

A Device for applying a layer to a flat steel product includes a zinc alloy melt bath with an input side, an exit side, a stripping nozzle device which comprises at least one nozzle lip gap and which is arranged in the area of the exit side in such a way that the still liquid layer at the flat steel product is blowable off with gas which emerges through the nozzle lip gap. The device is configured to make at least one of increasing the bath temperature of the alloy melt bath if the current absolute local air humidity is reduced and vice versa, and / or reducing the thickness of the nozzle lip gap if the current absolute local air humidity is reduced and vice versa, and / or reducing the distance between the nozzle lip gap and the side of the flat steel product.

The invention relates to the technical field of nano-metal production, and particularly discloses an efficient nano-metal production device and a nano-metal production method.The efficient nano-metal production device comprises an evaporation cavity, a heat preservation layer and a molten pool are arranged in the evaporation cavity, and the interval between the molten pool and the heat preservation layer is 50-100 mm; a molten pool ventilation opening and a protection air ventilation opening are formed in the evaporation cavity, the protection air ventilation opening is located above the molten pool ventilation opening, a first ventilation pipe and air outlet pipelines are arranged at the top of the evaporation cavity, the air outlet pipelines are located on the two sides of the first ventilation pipe, and a second ventilation pipe is arranged in the first ventilation pipe; a main process tuyere is formed between the first ventilation pipe and the second ventilation pipe, an air outlet is formed in the bottom of the first ventilation pipe and communicates with the main process tuyere, the side, close to the axis of the first ventilation pipe, of the air outlet is vertically formed, and the other side of the air outlet inclines towards the outer wall of the molten pool. An arc surrounding air opening is formed between the arc generator and the second ventilation pipe.

This invention discloses a visual recognition-based furnace condition detection system and method, relating to the field of smelting furnace detection. The method includes: obtaining registered brightness-normalized visual data; combining the components into a multi-basic wavelet decomposition feature tensor; inputting the multi-basic wavelet decomposition feature tensor into a dual-path Vision-KAN coding network to obtain latent space feature representations of the molten pool structure and dust disturbance; constructing a non-uniform dust density estimation model based on the dust disturbance latent space feature representations to obtain latent space feature representations of the molten pool structure and dust disturbance after gating; generating a three-phase interface enhancement feature tensor; combining inverse wavelet transform to output a reconstructed image of the pure molten pool, a segmented image of the molten pool boundary, a liquid level line, and an abnormal splash risk map; and generating a smelting condition assessment result based on the abnormal splash risk map. This invention improves the accuracy and robustness of molten pool structure recovery under complex operating conditions.