Width amplification method for side blowing smelting furnace coupled with multi-gun top blowing

Abstract

The invention relates to the technical field of non-ferrous metal smelting equipment, and discloses a multi-gun top-blowing coupled side-blowing smelting furnace width amplification method, which comprises the following steps: monitoring the state of a molten pool in a furnace in real time, and obtaining molten pool smelting furnace data; the influence of airflow entrainment on the falling track of the fed particles on the deviation of the middle part of the furnace body is calculated; performing numerical simulation to obtain stirring characteristics of the spray gun in the furnace; based on the influence of airflow entrainment on the falling track of the fed particles on the deviation of the middle part of the furnace body, the staggered arrangement positions of the top-blowing spray guns and the feeding ports are obtained; adjusting parameters of the spray guns according to staggered arrangement positions of the top-blowing spray guns and the feeding ports; and the blowing period, the oxygen lance layout and the molten pool depth are automatically optimized, and optimized data are stored in a spray gun optimization parameter database for storage. The furnace can meet the large-scale, continuous and high-efficiency operation requirements of a modern smelting plant, and the productivity and efficiency in the smelting process are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to non-ferrous smelting equipment technical field, especially to a kind of coupling multiple gun top blowing's side blown smelting furnace width amplification method. BACKGROUND

[0002] The process flow of non-ferrous smelting mainly includes smelting, blowing and refining three links. The traditional reverberatory furnace smelting and electric furnace smelting have poor mass transfer and heat transfer effect, slow melting speed, high energy consumption, low sulfur content in flue gas, serious pollution of unorganized emission and other problems. Modern smelting technology can be mainly divided into flash and bath smelting. Compared with flash smelting, bath smelting has lower grade requirement for mineral material, simple furnace charge preparation and high smelting intensity, and is the first choice for new smelting plant. Bath smelting can be further divided into top blowing, side blowing and bottom blowing bath smelting according to the blowing direction of the lance. However, the bottom blowing bath smelting is prone to clogging of the bottom lance, and usually requires flexible rotation of the furnace structure. The submerged top blowing smelting furnace has only one single lance in the center of the furnace body, and there is a large range of stirring dead zone around the furnace wall, and the lance head is easy to wear and replace frequently. The expansion of the width of the side blown smelting furnace is greatly restricted due to the limited penetration depth of the side blowing jet in the furnace body, so the width of the furnace can be expanded to at most 2.5-2.8m by increasing the gas pressure, and the processing capacity is limited. In view of the above problems that single jet direction will cause stirring dead zone in the bath, complex structure of bottom blowing furnace, discontinuous smelting of submerged top blowing furnace and limited width of side blown furnace, the advantages and disadvantages of various furnace types are considered, and an innovative design is needed to ensure uniform stirring and smelting efficiency while adapting to the background of continuously decreasing mineral grade and the development trend of continuous smelting process and large-scale smelting equipment.

[0003] Prior art one, Chinese patent, patent number: 202411819055.5 relates to the field of smelting process parameter optimization, discloses a data-driven multi-furnace continuous smelting intelligent control system and method, the system comprises: a data acquisition module, a machine learning module and an intelligent control module; the method comprises: collecting temperature, oxygen content and gas composition operating component data in the oxygen-enriched side blown and top blown furnace; constructing a continuous smelting simulation model, inputting real-time operating component data into the continuous smelting simulation model for simulation, adjusting process parameters according to the feedback of simulation results; and adjusting process parameters in real time according to the dynamic change rate in the learning production process; defining a fuzzy rule base to intelligently control multiple-input multiple-output devices, and dynamically adjusting the control strategy through fuzzy reasoning. Although, the fine control of the smelting process is realized, the production efficiency is improved, the smelting time is reduced, the dependence on operators is reduced, the labor intensity and labor cost are reduced; however, single jet direction will cause stirring dead zone in the bath, complex structure of bottom blowing furnace, discontinuous smelting of submerged top blowing furnace and limited width of side blown furnace.

[0004] Prior art two, Chinese patent, patent number: 202411608188.8 relates to non-ferrous metallurgy technical field, especially to a new type of side blowing feeding device and intelligent control system and method. The device includes a compressor, a safety valve, a pressure sensor, a mechanical seal device, an electric control valve, an additive storage tank, a coal powder storage tank and a raw material storage tank; the system includes a data acquisition module, an intelligent prediction module and an operation module; the method includes real-time acquisition of injection into the molten pool of particles and lance gas flow data; based on the collected injection into the molten pool of particles and lance gas flow data, the appropriate feed amount and air amount are given through numerical calculation; according to the calculated data, the compressor and each bin discharge valve are controlled to realize precise air supply and feeding. Although, through the way of pneumatic conveying, particles and air are injected into the molten pool from the side of the side blowing furnace simultaneously, which is used to reduce the waste of material particles, reasonably predict and accurately control the material feeding amount and air flow, and realize the efficient operation of the side blowing smelting furnace; however, the single jet direction will make the molten pool have stirring dead zone, the bottom blowing furnace structure is complex, the submerged top blowing furnace smelting is discontinuous, and the width of the side blowing furnace is limited.

[0005] Prior art three, Chinese patent, patent number: 202411178226.0 discloses a molten pool smelting electric furnace combined with side blowing and bottom blowing, which comprises a furnace body and an oxygen lance device, an electric heating module and a control system arranged on the furnace body. The oxygen lance device comprises a bottom blowing oxygen lance and a side blowing oxygen lance. The control system comprises a side blowing and bottom blowing oxygen lance inclination adjusting module and an oxygen lance depth adjusting module. The side blowing and bottom blowing oxygen lance inclination adjusting module is used for adjusting the blowing inclination of the bottom blowing oxygen lance and the side blowing oxygen lance. The oxygen lance depth adjusting module is used for adjusting the length of the bottom blowing oxygen lance and the side blowing oxygen lance penetrating into the electric furnace. The length of the electrode penetrating into the electric furnace is adjusted by a hydraulic lifting device to ensure that the heat generated by the electrode can be quickly transferred to the melt. The blowing inclination of the bottom blowing oxygen lance and the side blowing oxygen lance is adjusted by the side blowing and bottom blowing oxygen lance inclination adjusting module. Although the length of the bottom blowing oxygen lance and the side blowing oxygen lance penetrating into the electric furnace is adjusted by the oxygen lance depth adjusting module, the flow of the melt in the electric furnace reaches the best, and the smelting efficiency and product quality are improved; however, the single jet direction will make the molten pool have stirring dead zone, the bottom blowing furnace structure is complex, the submerged top blowing furnace smelting is discontinuous, and the width of the side blowing furnace is limited.

[0006] At present, prior art one, prior art two and prior art three have the problem that the single jet direction will make the molten pool have stirring dead zone, the bottom blowing furnace structure is complex, the submerged top blowing furnace smelting is discontinuous, and the width of the side blowing furnace is limited. In order to solve the above problems, the present application provides a method for enlarging the width of a side blowing smelting furnace coupled with multiple top blowing lances. SUMMARY

[0007] The main purpose of the present application is to provide a method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing guns, so as to solve the problems in the prior art that a single jet direction causes a stirring dead zone in the molten pool, the bottom-blown furnace structure is complex, the submerged top-blown furnace smelting is discontinuous, and the width of the side-blown furnace is limited.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0009] A method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing guns, the side-blown smelting furnace control method, comprising the following steps:

[0010] Real-time monitoring of the molten pool state in the furnace to obtain the molten pool smelting furnace data; and calculation of the influence of the airflow wrapping on the middle part of the furnace body offset by the falling trajectory of the feeding particles;

[0011] Numerical simulation is performed to obtain the stirring characteristics of the furnace gun; based on the influence of the airflow wrapping on the middle part of the furnace body offset by the falling trajectory of the feeding particles, the staggered arrangement position of the top-blowing gun and the feeding port is obtained;

[0012] According to the staggered arrangement position of the top-blowing gun and the feeding port, the gun parameters are adjusted; the automatic optimization of the blowing period, the oxygen gun layout and the molten pool depth is performed, and the optimized data is stored in the gun optimization parameter database for storage.

[0013] As a further improvement of the present application, the process of calculating the influence of the airflow wrapping on the middle part of the furnace body offset by the falling trajectory of the feeding particles comprises the following steps:

[0014] Real-time monitoring of the molten pool state in the furnace to obtain the molten pool smelting furnace data; and calculation of the influence of the airflow wrapping on the middle part of the furnace body offset by the falling trajectory of the feeding particles;

[0015] The stirring characteristics of the furnace gun are simulated and obtained by solving the mass conservation equation, the momentum conservation equation and the energy conservation equation, and the interface tracking equation;

[0016] The stirring range of the molten pool smelting liquid by the side-blowing gun and the top-blowing gun is obtained.

[0017] As a further improvement of the present application, the process of obtaining the staggered arrangement position of the top-blowing gun and the feeding port comprises the following steps:

[0018] Based on the influence of the airflow wrapping on the middle part of the furnace body offset by the falling trajectory of the feeding particles, the staggered arrangement position of the top-blowing gun and the feeding port is obtained; the falling trajectory of the feeding particles in the Lagrangian framework is tracked, and the basic equation based on Newton's second law is established;

[0019] When the material particles pass through the viscous flow, the resistance is generated by the flow on the particles, which is related to the velocity difference (Uf -U p ) is related to the flow velocity; if the flow velocity is higher than the particle, then drag force is generated;

[0020] When the feeding particles are accelerated relative to the fluid, secondary flow is caused around the particles, and the virtual mass force is calculated.

[0021] As a further improvement of the present application, the process of causing secondary flow around the particles comprises the following steps:

[0022] When the pressure gradient is generated, the pressure gradient force acts on the particles; at the same time, the gravity is considered in the gravitational field;

[0023] The lift force is composed of the Saffman lift force and the Magnus lift force ;

[0024] The falling trajectory of the feeding particles and the size range of the material column are obtained by iterative solution.

[0025] As a further improvement of the present application, the process of storing the optimized data into the lance optimization parameter database for storage comprises the following steps:

[0026] Determine the key optimization indicators in the blowing process, call the historical smelting database to establish a fuzzy judgment matrix, if the gas holdup has the greatest influence on the comprehensive performance, then give it a higher weight; the average speed and the turbulent kinetic energy are the second;

[0027] Based on the simulation results, generate multiple parameter combinations; normalize the index values under each parameter combination to eliminate the dimensional differences; determine the weight, and calculate the comprehensive score of each parameter combination;

[0028] Select the parameter combination with the highest comprehensive score, automatically adjust the lance layout, optimize the bath depth and blowing period; store the optimized parameters into the lance optimization database for storage; and perform visual display.

[0029] As a further improvement of the present application, the process of calling the historical smelting database to establish a fuzzy judgment matrix comprises the following steps:

[0030] Compare each pair of indicators to determine the importance of one indicator relative to another; quantify the comparison results of each pair of indicators, and organize the quantified comparison results to obtain a fuzzy judgment matrix;

[0031] Calculate the maximum eigenvalue in the fuzzy judgment matrix to obtain the consistency ratio; if the calculation result is less than the preset value, the fuzzy judgment matrix is qualified; if it is greater, the weight is adjusted again to reconstruct the matrix;

[0032] Based on the fuzzy judgment matrix, the weight vector of each index is calculated; by solving the maximum eigenvalue of the fuzzy judgment matrix and the corresponding eigenvector, the weight vector is obtained; according to the calculation result of the fuzzy judgment matrix, the weight of each index in the comprehensive evaluation is determined.

[0033] As a further improvement of the application, the process of calculating the comprehensive score of each parameter combination includes the following steps:

[0034] Based on the upper and lower limits of the parameters set based on historical data, the value range of each key parameter is set; normal distribution is used to generate parameter values, and multiple parameter combinations are generated;

[0035] The index values under each parameter combination are dimensionless, the dimensional difference is eliminated, and the dimensionless index values of each parameter combination are weighted and summed according to the determined weight, to obtain the comprehensive score;

[0036] Based on the comprehensive score, the parameter range is adjusted or the number of parameter combinations is increased, and the iteration is performed in turn until the preset optimization target is met.

[0037] As a further improvement of the application, the process of storing the optimized parameters in the spray gun optimization database includes the following steps:

[0038] Based on the numerical simulation results and experimental results, the oxygen lance structure parameter combination with the greatest influence on the comprehensive index is selected; based on the real-time state of the molten pool, the distance between the oxygen lance and the molten pool surface is adjusted;

[0039] The influence of different molten pool depths on gas content, velocity and turbulent kinetic energy is analyzed, and the depth value with the highest comprehensive score is selected; the oxygen lance oxygen supply capacity and nozzle structure are optimized to increase the impact depth of oxygen flow on the molten pool; the molten pool height and flow state are monitored by sensors, and the oxygen supply intensity is automatically adjusted to maintain the molten pool depth within the target range;

[0040] The blowing period is divided into three stages of initial, middle and late, which correspond to different gun positions and oxygen supply parameters; the optimized spray gun parameters, molten pool depth and blowing period data are stored in the database to form a historical case library.

[0041] To achieve the above purpose, the application also provides the following technical solutions:

[0042] The application discloses a side-blown bath smelting furnace coupled with multiple top-blowing lances, which is applied to a width expansion method of the side-blown bath smelting furnace coupled with multiple top-blowing lances.

[0043] As a further improvement of the application, the submerged top-blowing lance is installed on the furnace body, and the submerged top-blowing lance is arranged through the charging port and the waste heat boiler flue.

[0044] The furnace body expansion design method provided by the application is suitable for various lance structures and can meet the requirements of different mineral materials and smelting reactions. The design requirements of large-scale modern smelting furnaces are fully considered, the advantages of the structure characteristics of the side-blown furnace body are maintained, and the problem of limited furnace body width is effectively solved through innovative blowing methods and furnace design methods. The furnace can meet the requirements of large-scale, continuous and high-efficiency operation of modern smelting plants, and the productivity and efficiency of the smelting process are improved. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 A structural schematic view of one embodiment of the side-blown bath smelting furnace coupled with multiple top-blowing lances is shown in the accompanying drawings.

[0046] Figure 2 A step flow chart of one embodiment of the width expansion method of the side-blown bath smelting furnace coupled with multiple top-blowing lances is shown in the accompanying drawings.

[0047] Figure 3 A step flow chart of one embodiment of the width expansion method of the side-blown bath smelting furnace coupled with multiple top-blowing lances and calculation of the influence of airflow wrapping on the falling track of the charging particles in the middle part of the furnace body is shown in the accompanying drawings.

[0048] Figure 4 A first side view of the side-blown bath smelting furnace coupled with multiple top-blowing lances is shown in the accompanying drawings.

[0049] Figure 5 A top view of the side-blown bath smelting furnace coupled with multiple top-blowing lances is shown in the accompanying drawings.

[0050] Figure 6 A front view of the side-blown bath smelting furnace coupled with multiple top-blowing lances is shown in the accompanying drawings.

[0051] Figure 7A principle flow chart of an embodiment of the method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing lances;

[0052] Figure 8 A step flow chart of obtaining the staggered arrangement position of the top-blowing lances and the charging port in an embodiment of the method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing lances;

[0053] Figure 9 A step flow chart of causing secondary flow around the particles in an embodiment of the method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing lances;

[0054] Figure 10 A step flow chart of storing the optimized data into a lance optimization parameter database in an embodiment of the method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing lances;

[0055] Figure 11 A step flow chart of calling a historical smelting database to establish a fuzzy judgment matrix in an embodiment of the method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing lances;

[0056] Figure 12 A step flow chart of calculating the comprehensive score of each parameter combination in an embodiment of the method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing lances;

[0057] Figure 13 A step flow chart of storing the optimized parameters into a lance optimization database in an embodiment of the method for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing lances;

[0058] Figure 14 A functional module schematic diagram of an embodiment of the system for expanding the width of a side-blown smelting furnace coupled with multiple top-blowing lances;

[0059] Figure 15 A structural schematic diagram of an embodiment of the electronic device;

[0060] Figure 16 A structural schematic diagram of an embodiment of the storage medium. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0062] The terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated. Thus, features defined with "first", "second", "third" can include at least one of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional references (such as upper, lower, left, right, front, back, etc.) in the present application are only used for explanatory purposes in describing the relative location, movement, etc. of the components in a particular position (as shown in the drawings), and if the particular position changes, the directional references will also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0063] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0064] As shown in Figure 1 The present embodiment provides an embodiment of a coupled multi-lance top blown side blown bath smelting furnace, which includes a side blown bath smelting furnace kiln body, a slag chamber 1 and a siphon 2 at both ends of the furnace body, a plurality of side blown lances / primary tuyeres 3 in the bath slag phase area on the side wall surface of the furnace kiln, a plurality of furnace side secondary tuyeres 4 above the bath on the side wall surface of the furnace kiln, a plurality of charging ports 5 in the furnace top area, a waste heat boiler flue 6, one splashing liquid level hole and two observation holes. One end of the furnace body is provided with a slag chamber separated by a partition wall, with a slag discharge port 7 and a slag chamber flue 8, facilitating slag-gold separation and discharge of the slag phase 9; the other end discharges the matte phase 10 through the siphon, flowing into the subsequent converting process furnace; the right side of the slag chamber 1 is provided with a slag retaining plate 11. The submerged top blown lance 12 is installed on the furnace body 13, and the submerged top blown lance 12 is arranged through the charging port 5 and the waste heat boiler flue 6.

[0065] Wherein, the fuel, oxygen-enriched air or gas-solid mixture is directly injected into the molten pool by the combined action of the top blowing lance and the side blowing lance, so that the molten pool is divided into two layers with significant kinetic differences: the upper layer of molten pool will form turbulent motion under the action of gas floating stirring, promote the mixing and stirring of molten bath and charge, strengthen the mass and heat transfer of gas, liquid and solid three phases in the molten pool, and significantly increase the reaction interface and the generation speed of new phase, greatly improve the smelting reaction efficiency; while the lower layer is relatively calm, affecting the settlement and separation of each phase product (slag and metal) in the molten bath.

[0066] As shown in Figure 2 The embodiment provides a real-time example of the coupling multi-lance top blowing side blowing smelting furnace width amplification method, and in the embodiment, the coupling multi-lance top blowing side blowing smelting furnace width amplification method specifically comprises the following steps:

[0067] Step S1: real-time monitoring of the molten pool state in the furnace, obtaining the molten pool smelting furnace data; and calculating the influence of the gas flow wrapping on the falling trajectory of the feeding particles in the middle part of the furnace body;

[0068] Step S2: numerical simulation is carried out to obtain the stirring characteristics of the lance in the furnace; based on the influence of the gas flow wrapping on the falling trajectory of the feeding particles in the middle part of the furnace body, the staggered arrangement position of the top blowing lance and the feeding port is obtained;

[0069] Step S3: adjusting the lance parameters according to the staggered arrangement position of the top blowing lance and the feeding port; automatically optimizing the blowing period, oxygen lance layout and molten pool depth, and storing the optimized data in the lance optimization parameter database for storage.

[0070] Preferably, the present embodiment collects multi-dimensional data such as molten pool temperature, material distribution, and gas flow state in real time through infrared high-temperature cameras, laser scanning, electromagnetic monitoring, etc., and analyzes the offset effect of the trajectory of the feeding particles under the entrainment of the gas flow in combination with numerical simulation; based on the numerical simulation results, the staggered arrangement position of the top blowing lance and the feeding port is determined, and parameters such as the distance between the lances, the inclination angle, and the immersion depth are optimized; a fuzzy judgment matrix is introduced to weigh the weights of different optimization indicators, and multi-objective parameter optimization is realized. According to the deviation of the real-time monitoring data and the preset standard value, the immersion depth of the lance, the oxygen flow, the blowing period and other parameters are automatically adjusted, and the operation is dynamically optimized through the logistic regression model; the optimized lance parameters are stored in the database to support continuous process improvement. By coupling the multi-lance side blowing and multi-lance top blowing technologies, the gas-liquid-solid three-phase stirring effect in the molten pool can be significantly improved. The introduction of the multi-lance blowing system reduces the stirring dead zone in the traditional top blowing and side blowing molten pool system, effectively improves the mixing efficiency of the materials and gas in the molten pool, and significantly improves the smelting energy efficiency and reduces energy consumption. The side blowing molten pool smelting furnace enlargement technology coupled with multi-lance top blowing overcomes the problem that the traditional furnace type is limited by the width of the side blowing molten pool, and can greatly increase the capacity and processing capacity of the furnace body. Through the reasonable arrangement of multiple lances, the width of the furnace body is effectively widened, and higher single-furnace capacity is realized. According to the smelting needs of different non-ferrous metals, the adaptability of the side blowing and top blowing lances can be flexibly adjusted to meet the needs of various smelting scenes. Whether it is a high heat release reaction of sulfidized concentrate or an endothermic reaction of refractory ore, the furnace enlargement design method provided by the present application is suitable for various lance structures and can meet the requirements of different ore materials and smelting reactions. The design requirements of modern smelting furnaces are fully considered, and while maintaining the structural characteristics of the side blowing furnace, the problem of limited furnace width is effectively solved through innovative blowing methods and furnace design methods. The furnace can meet the needs of modern smelting plants for large-scale, continuous, and high-efficiency operation, and the capacity and efficiency of the smelting process are improved.

[0071] Further, as shown in Figure 3 , the process of calculating the influence of the gas flow entrainment on the offset of the falling trajectory of the feeding particles in the middle of the furnace in step S1 specifically includes the following steps:

[0072] Step S11: Real-time monitoring of the molten pool state in the furnace to obtain the molten pool smelting furnace data; and calculating the influence of the gas flow entrainment on the offset of the falling trajectory of the feeding particles in the middle of the furnace;

[0073] Step S12: Simulating and obtaining the lance stirring characteristics in the furnace by solving the mass conservation equation, the momentum conservation equation, the energy conservation equation, and the interface tracking equation;

[0074]

[0075]

[0076] where p is the fluid density, is the velocity vector, t is time, denotes the divergence operator, p is the fluid pressure, μ is the dynamic viscosity, is the surface tension, e is the internal energy per unit mass, k is the thermal conductivity, T is the temperature, φ is the level set function, which indicates the position of the liquid surface;

[0077] Step S13: It is learned that the agitation ranges of the side blowing lance and the top blowing lance on the molten bath are A side and A top respectively.

[0078] The designed width of the molten bath area with a rectangular cross-sectional shape is:

[0079] Y=A top *(n-1)+2A side

[0080] The length is:

[0081] X=2A side *(m+2)

[0082] In the formula, Y represents the total width of the molten bath; X represents the total length of the molten bath; n represents the dimensionless positive integer of the arrangement number of the top blowing lance; and m represents the integer parameter related to the layout of the arrangement expansion coefficient of the side blowing lance.

[0083] Preferably, the present embodiment is based on the different heat absorption and release of different metal ore smelting reaction process, and the smelting of the molten pool can be mainly divided into self-heating smelting of sulfide ore without additional heat source and non-self-heating smelting of refractory or heat-absorbing reaction process requiring additional heat source. Therefore, according to the different smelting materials and smelting requirements, different side blowing, top blowing lance structure and gas source pipeline need to be adopted. In the smelting process of copper sulfide, lead sulfide, nickel sulfide and other sulfide concentrates, the oxidation reaction of sulfide is a strong exothermic reaction, which can generate enough heat to maintain the smelting process. The side blowing lance adopts single channel oxygen-enriched lance blowing. The top blowing lance does not need coal or gas pipeline, and can select immersed cyclone lance or self-consumption top blowing lance. In the treatment of lead-zinc ore, cassiterite, zinc leaching residue and other some refractory or heat-absorbing reaction process, coal, natural gas and other heat sources are needed to supplement the heat to complete the smelting process. At this time, the side blowing lance adopts coal or gas lance, and the top blowing lance adopts multi-channel immersed cyclone lance with coal in the center flow channel to maintain and provide heat. The bottom shape of the hearth is designed as a disc shape, which is beneficial to concentrate heat. The shape of the cross section of the molten pool is rectangular. The design volume of the hearth area of the molten pool smelting furnace, as well as the length and width of the furnace body, is related to the stirring performance of the side blowing lance, the number of top blowing lances, the arrangement of lance position and the stirring performance. Single side blowing lance can stir the molten pool in the single side near wall area, and the range with a time-averaged flow velocity greater than 1m / s is about 0.6m away from the side blowing furnace wall. A single immersed cyclone top blowing lance stirs the upper layer of the molten pool, and the range with a time-averaged flow velocity greater than 1m / s is about 2.5m in diameter. A single self-consumption non-immersed top blowing lance stirs the upper layer of the molten pool, and the range is about 1.2m in diameter. The specific stirring range of the lance is related to the structure of the lance, the blowing operation parameters and the physical properties of the molten pool smelting, which is determined by numerical simulation. The lance stirring characteristics in the furnace are simulated and obtained by solving the mass conservation equation, the momentum conservation equation and the energy conservation equation as well as the interface tracking equation (for specific principles, refer to the attached Figure 4 , attached Figure 5 , attached Figure 6 and attached Figure 7 ).

[0084] Further, as shown in Figure 8 , the process of obtaining the staggered arrangement position of the top blowing lance and the feeding port in step S2 specifically includes the following steps:

[0085] Step S21: obtaining the staggered arrangement position of the top blowing lance and the feeding port based on the influence of the gas flow wrapping and trapping of the falling trajectory of the feeding particles on the middle part of the furnace; tracking the falling trajectory of the feeding particles in the Lagrangian framework, and establishing a basic equation based on Newton's second law;

[0086] The basic equation based on Newton's second law is:

[0087]

[0088] where, and represent the drag force, lift force, gravity force and virtual mass force and pressure gradient force experienced by the feed particles;

[0089] Step S22: When the material particles pass through viscous flow, the resistance is generated by the flow on the particle, which is related to the velocity difference between the flow and the particle; if the flow velocity is higher than the particle, a drag force will be generated; m p represents the mass of the particle; represents the fluid velocity vector solved by the Navier-Stokes equation; represents the particle velocity vector solved by the Newton's second law;

[0090] where, the forced resistance is given by:

[0091]

[0092] τ p represents the particle relaxation time defined as:

[0093]

[0094] where, CD represents the drag coefficient, Rep is the particle Reynolds number; p p represents the particle density; represents the particle diameter measured by experiment or design parameter; μ g represents the dynamic viscosity of the gas fluid property parameter;

[0095] Step S23: When the feed particles accelerate relative to the fluid, secondary flow is induced around the particles, which is called virtual mass force; the calculation formula of the virtual mass force is:

[0096]

[0097] Preferably, the embodiment takes into account the influence of the airflow wrapping of the falling trajectory of the feed particles on the deviation of the middle of the furnace body, and the top blowing lance needs to be staggered with the feed port. The falling trajectory of the feed particles in the Lagrangian framework is tracked, and the basic equation based on Newton's second law is established; when the material particles pass through viscous flow, the resistance is generated by the flow on the particle, which is related to the velocity difference between the flow and the particle. When the feed particles accelerate relative to the fluid, secondary flow is induced around the particles, which is called virtual mass force.

[0098] Further, as Figure 9As shown, the process of causing secondary flow around the particles in step S23 specifically includes the following steps:

[0099] Step S231: When the pressure gradient is generated, the pressure gradient force acts on the particles; at the same time, the gravity is considered in the gravitational field;

[0100] The calculation formula of the pressure gradient force and the gravity is:

[0101]

[0102] Step S232: The lift is composed of the Saffman lift and the Magnus lift , and the formula is:

[0103]

[0104]

[0105] Wherein, K l = 2.594, d ij represents the deformation tensor; C RL and S p represent the Magnus lift coefficient and the spin parameter; A p is the surface area of the feeding particles; K l represents the Saffman lift correction coefficient constant 2.594 dimensionless; v represents the fluid motion viscosity; p f represents the fluid density; d ij represents the fluid deformation rate tensor component; S p represents the particle spin parameter; represents the particle angular velocity vector solved by the rotational dynamics model; represents the relative velocity vector; represents the vorticity vector; d lk d kl represents the strain rate tensor component describing the local shear characteristics of the fluid;

[0106] Step S233: The falling trajectory of the feeding particle material and the size range of the material column are obtained by iterative solution.

[0107] Preferably, when the pressure gradient is generated in the system, the pressure gradient force acts on the particles. At the same time, the gravity is considered in the gravitational field. The lift is composed of the Saffman lift and the Magnus lift , and the falling trajectory of the feeding particle material and the size range of the material column are obtained by iterative solution. By reasonably staggered arrangement of the top blowing lance and the feeding port, the collision and wear between the top blowing lance and the falling ore material are prevented.

[0108] Further, as shown in Figure 10 The process of storing the optimized data into the lance optimization parameter database in step S3 specifically includes the following steps:

[0109] Step S31: Determine the key optimization indicators in the blowing process, retrieve the historical smelting database to establish a fuzzy judgment matrix, and if the gas content rate has the greatest impact on the comprehensive performance, give it a higher weight; the average speed and turbulent energy are next;

[0110] The key optimization indicators include gas content rate, average speed, and average turbulent energy, etc.

[0111] Step S32: Based on the simulation results, generate multiple parameter combinations; perform dimensionless processing on the indicator values under each parameter combination to eliminate dimensional differences; determine the weights and calculate the comprehensive scores of each parameter combination.

[0112] Step S33: Select the parameter combination with the highest comprehensive score, automatically adjust the lance layout, optimize the bath depth and blowing period; store the optimized parameters into the lance optimization database for storage; and perform visual display.

[0113] Preferably, the present embodiment adopts a fuzzy judgment matrix to determine the weights, solves the weight vector through a linear programming model, and introduces consistency checking to ensure the rationality of the weights. Through dimensionless processing, the influence of different dimensions on comprehensive evaluation is eliminated, and multi-index comparability is achieved. Based on numerical simulation, multiple parameter combinations are generated, and multi-factor response analysis is performed combined with the Taguchi method. The parameter effect is verified through the simulation model. An iterative optimization mechanism is adopted to select the optimal parameter combination through multiple simulations, ensuring the scientificity and robustness of the parameter design. Real-time monitoring and feedback control modules are used to dynamically adjust the lance layout, bath depth, and blowing period, forming a "simulation-optimization-execution" closed loop. A lance optimization database is established to store historical parameters and optimization results, supporting data-driven continuous improvement. By giving priority to the gas content rate, the gas-liquid interaction area and reaction rate are improved; at the same time, the average speed and turbulent energy are controlled to enhance the bath stirring effect but avoid excessive spattering; simulation and parameter optimization make the oxygen lance diameter, inclination angle, and other structural parameters and blowing process parameters match the best smelting state; the fuzzy judgment matrix and multi-objective optimization model replace the empirical trial-and-error method to realize quantitative decision-making and reduce subjective bias; real-time monitoring of liquid level and temperature automatically adjusts the lance operating parameters to ensure stable operation of the blowing process.

[0114] Further, as shown in Figure 11 The process of retrieving the historical smelting database to establish a fuzzy judgment matrix in step S31 specifically includes the following steps:

[0115] Step S311: Compare each pair of indicators to determine the importance of one indicator relative to another; quantify the comparison results of each pair of indicators, and organize the quantified comparison results to obtain a fuzzy judgment matrix;

[0116] Step S312: Calculate the largest eigenvalue in the fuzzy judgment matrix to obtain the consistency ratio; if the calculation result is less than the preset value, the fuzzy judgment matrix is ​​qualified; if it is greater than the preset value, readjust the weights and reconstruct the matrix.

[0117] Step S313: Calculate the weight vector of each indicator based on the fuzzy judgment matrix; obtain the weight vector by solving the maximum eigenvalue and corresponding eigenvector of the fuzzy judgment matrix; determine the weight of each indicator in the comprehensive evaluation based on the calculation results of the fuzzy judgment matrix.

[0118] Preferably, this embodiment constructs a fuzzy judgment matrix by comparing the importance of indicators pairwise, quantifying the fuzzy judgments of experts on the relative importance of indicators. The matrix construction incorporates fuzzy mathematics methods, allowing for the processing of both qualitative and quantitative indicators while remaining compatible with the fuzziness of expert judgments. The maximum eigenvalue of the fuzzy matrix is ​​calculated, and the rationality of the judgment logic is verified through the consistency ratio. The consistency check, based on the comparison of eigenvalue decomposition and random consistency indicators, ensures that there are no contradictions in the importance judgments among indicators. By solving for the eigenvector corresponding to the maximum eigenvalue of the fuzzy judgment matrix, an initial weight vector is obtained, and then the comprehensive weight of each indicator is determined through normalization. Fuzzy mathematics methods transform subjective expert judgments into quantitative weights, solving the problem of the difficulty in quantifying qualitative indicators. Eigenvalue decomposition and fuzzy operations simplify weight calculation; the weight vector is mathematically verified, making the results more scientific and interpretable. The fuzzy comprehensive evaluation combines the weight vector and the membership matrix to output quantitative results, providing an intuitive basis for decision-making.

[0119] Furthermore, such as Figure 12 As shown, the process of calculating the comprehensive score of each parameter combination in step S32 specifically includes the following steps:

[0120] Step S321: Set upper and lower limits for parameters based on historical data, and set a range of values ​​for each key parameter; generate parameter values ​​using a normal distribution, and generate multiple sets of parameter combinations;

[0121] Step S322: Perform dimensionless processing on the index values ​​under each parameter combination to eliminate dimensional differences. Based on a certain weight, perform weighted summation on the dimensionless index values ​​of each parameter combination to obtain a comprehensive score.

[0122] Step S323: Adjust the parameter range or increase the number of parameter combinations based on the comprehensive score, and iterate in sequence until the preset optimization target is met.

[0123] Preferably, the embodiment sets upper and lower limits of the parameters based on historical data, generates multiple sets of parameter combinations through normal distribution; adopts dimensionless processing to eliminate the dimensional differences of different indicators, ensuring the comparability of the indicators; weights and sums the dimensionless indicators according to the preset weight to generate a comprehensive score; dynamically adjusts the parameter range or increases the number of combinations based on the comprehensive score, and iteratively approaches the preset optimization target. By constraining the parameter range with historical data, the generation of invalid combinations is avoided; the normal distribution generation strategy balances the relationship between exploration and utilization, improving the representativeness of the parameter combinations; the dimensionless processing eliminates the dimensional differences, ensuring the weighted calculation of different indicators on a unified scale and avoiding evaluation bias caused by different units or magnitudes; the iterative adjustment mechanism gradually narrows the parameter range or increases the local sampling density, reduces invalid calculations, and accelerates convergence to the optimal solution; the weighted comprehensive score integrates multi-dimensional information, reduces the one-sided influence of a single indicator, and improves the adaptability of the model to complex systems.

[0124] Further, as shown in Figure 13 The process of storing the optimized parameters in the lance optimization database in step S33 specifically includes the following steps:

[0125] Step S331: Based on the numerical simulation results and experimental results, select the oxygen lance structure parameter combination that has the greatest impact on the comprehensive index; based on the real-time state of the molten pool, adjust the distance between the oxygen lance and the molten pool surface;

[0126] Step S332: Analyze the influence of different molten pool depths on gas holdup, velocity and turbulent kinetic energy, and select the depth value with the highest comprehensive score; optimize the oxygen lance oxygen supply capacity and nozzle structure to increase the impact depth of oxygen flow on the molten pool; monitor the molten pool height and flow state through sensors, automatically adjust the oxygen supply intensity, and maintain the molten pool depth within the target range;

[0127] Step S333: Divide the blowing period into three stages of initial, middle and late, corresponding to different lance positions and oxygen supply parameters; store the optimized lance parameters, molten pool depth and blowing period data into the database to form a historical case library.

[0128] Preferably, the present embodiment optimizes the structure parameters of the oxygen lance, such as the immersion depth, diameter, inclination angle, and spacing, through numerical simulation combined with experiments, and selects the parameter combination with the highest comprehensive score; the distance between the oxygen lance and the liquid surface and the oxygen supply intensity are dynamically adjusted in combination with the real-time state of the molten pool to realize parameter self-adaptation; the influence of the molten pool depth on the gas content, velocity, and turbulent kinetic energy is analyzed to determine the optimal depth range to balance the reaction efficiency and splashing risk; the molten pool height and flow state are monitored in real time through sensors to automatically adjust the oxygen supply intensity, maintain the molten pool depth within the target range, and reduce manual intervention. The blowing period is divided into three stages, namely, the initial, middle, and late stages, and different lance positions and oxygen supply parameters are matched to adapt to the reaction requirements in different stages; the optimized parameters and blowing period data are stored in a database to form a historical case library, providing data support for subsequent process optimization; the molten pool depth optimization and dynamic adjustment of the oxygen supply intensity can inhibit splashing caused by excessive impact and reduce oxygen waste; the staged blowing strategy adapts to the kinetic requirements in different reaction stages, such as strengthening decarburization in the initial stage and controlling slagging in the later stage to improve the stability of the end composition; the historical case library supports quick retrieval of verified parameter combinations, shortens the process debugging period, and improves production continuity; the oxygen lance nozzle structure and oxygen supply system are optimized to reduce the wear of the jet on the furnace bottom and the oxygen lance.

[0129] As shown in Figure 14 The present embodiment also provides a real-time example of a side-blown smelting furnace width expansion system coupled with multiple top-blowing lances, which, in the present embodiment, applies the side-blown smelting furnace width expansion method coupled with multiple top-blowing lances as in the above-mentioned embodiments, and includes:

[0130] A molten pool data monitoring module 14 is configured to monitor the molten pool state in the furnace in real time, obtain molten pool smelting furnace data, and calculate the influence of the airflow wrapping on the falling trajectory of the feed particles on the middle part of the furnace body.

[0131] A molten pool simulation module 15 is configured to perform numerical simulation and simulation to obtain the stirring characteristics of the lance in the furnace; based on the influence of the airflow wrapping on the falling trajectory of the feed particles on the middle part of the furnace body, the position of the top-blowing lance and the feed port is obtained.

[0132] An oxygen lance adjustment data module 16 is configured to adjust the lance parameters according to the position of the top-blowing lance and the feed port, automatically optimize the blowing period, the oxygen lance layout, and the molten pool depth, and store the optimized data in the lance optimization parameter database.

[0133] Preferably, the present embodiment adopts infrared thermal imaging, pressure sensors and other means to monitor the parameters such as the temperature of the molten pool, pressure, particle trajectory in real time, and calculates the influence of the gas flow on the entrainment of the feeding particles through the fluid mechanics model; the actual furnace type parameters establish the physical model of the molten pool, simulate the stirring characteristics of the lance, analyze the velocity field, turbulent kinetic energy, gas holdup distribution in the molten pool, etc.; combined with the calculation results of the gas flow entrainment effect, the spatial layout of the top blowing lance and the feeding port is optimized to avoid dead zones and strengthen the stirring of the reaction zone; using a closed-loop control architecture, according to the simulation results and real-time monitoring data, the parameters such as the immersion depth of the lance, the inclination angle of the oxygen lance, the gas flow rate, etc. are automatically adjusted to optimize the smelting cycle and the depth of the molten pool; the optimized lance parameters are stored in the database to support subsequent production tuning and historical data backtracking; through the optimization of the lance layout and the dynamic adjustment of the parameters, the mixing effect of the gas-liquid two-phase in the molten pool is enhanced, the reaction dead zone is reduced, and the turbulent kinetic energy and gas holdup distribution of the melt are more uniform, thereby accelerating the metallurgical reaction rate; real-time monitoring and closed-loop control reduce manual intervention, ensure that the parameters such as the temperature of the molten pool, the liquid level, the feeding trajectory, etc. are stable within the set range, and reduce the risk of slag overflow, splashing, etc.; quickly match the best oxygen lance parameter combination for different raw materials, furnace types and production demands, and improve the production flexibility; real-time early warning of abnormal state of the molten pool prevents erosion of the furnace lining and splashing accidents, and prolongs the service life of the equipment.

[0134] As shown in Figure 15 The present embodiment provides an embodiment of an electronic device 17, which includes a processor 171 and a memory 182 coupled to the processor 171.

[0135] The memory 182 stores program instructions for implementing the layout method of the coupling multi-lance top blowing side-blown smelting furnace width amplification method of any of the above embodiments.

[0136] The processor 171 is configured to execute the program instructions stored in the memory 172 to perform the layout of the coupling multi-lance top blowing side-blown smelting furnace width amplification method.

[0137] The processor 171 can also be referred to as a CPU (Central Processing Unit). The processor 171 can be an integrated circuit chip having a processing capability. The processor 171 can also be a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application-Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0138] Further, Figure 16For a structural schematic diagram of the storage medium of an embodiment of the present application, the storage medium 18 of the embodiment of the present application stores program instructions 181 capable of implementing all the methods described above, wherein the program instructions 181 can be stored in the storage medium in the form of a software product, including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media capable of storing program codes, or a terminal device such as a computer, a server, a mobile phone, and a tablet.

[0139] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the above-described device embodiments are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0140] In addition, each function unit in the various embodiments of the present application can be integrated into a processing unit, or each unit can exist alone physically, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware, or in the form of a software function unit. The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent flow transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, is also included in the patent protection scope of the present application.

[0141] The specific embodiments of the application are described in detail above, but they are only examples. The present application is not limited to the specific embodiments described above. Any equivalent modification or substitution made by those skilled in the art to the present application is also within the scope of the present application, and therefore, equivalent transformations, modifications, improvements, etc. made without departing from the spirit and principle range of the present application should be included in the scope of the present application.

Claims

1. A method for widening a multiple lance top blown side blown smelting furnace, characterized in that The side-blown molten bath smelting furnace control method comprises the following steps: Real-time monitoring of the molten bath state in the furnace to obtain molten bath smelting furnace data; and calculation of the influence of the airflow wrapping on the falling trajectory of the feeding particles relative to the middle part of the furnace body; Numerical simulation is performed to obtain the stirring characteristics of the lance in the furnace; based on the influence of the airflow wrapping on the falling trajectory of the feeding particles relative to the middle part of the furnace body, the staggered arrangement position of the top-blowing lance and the feeding port is obtained; According to the staggered arrangement position of the top-blowing lance and the feeding port, the lance parameters are adjusted; the blowing cycle, the oxygen lance layout and the molten bath depth are automatically optimized, and the optimized data are stored in the lance optimization parameter database for storage.

2. The method of claim 1, wherein the method is characterized by: The process of calculating the influence of the airflow wrapping on the falling trajectory of the feeding particles relative to the middle part of the furnace body comprises the following steps: Real-time monitoring of the molten bath state in the furnace to obtain molten bath smelting furnace data; and calculation of the influence of the airflow wrapping on the falling trajectory of the feeding particles relative to the middle part of the furnace body; The stirring characteristics of the lance in the furnace are simulated and obtained by solving the mass conservation equation, the momentum conservation equation and the energy conservation equation and the interface tracking equation; The stirring range of the molten bath smelting liquid by the side-blowing lance and the top-blowing lance is obtained.

3. The method of claim 1, wherein the method is characterized by, The process of obtaining the staggered arrangement position of the top-blowing lance and the feeding port comprises the following steps: Based on the influence of the airflow wrapping on the falling trajectory of the feeding particles relative to the middle part of the furnace body, the staggered arrangement position of the top-blowing lance and the feeding port is obtained; the falling trajectory of the feeding particles in the Lagrangian framework is tracked, and the basic equation based on Newton's second law is established; When a material particle is passing through viscous flow, the resistance is generated by the flow on the particle, which is related to the velocity difference between the flow and the particle; if the flow velocity is higher than the particle, then a drag force is generated; When the feeding particles accelerate relative to the fluid, a secondary flow is caused around the particles, and a virtual mass force is calculated.

4. The method of claim 3, wherein the width of the side-blown smelting furnace is enlarged by coupling a plurality of top-blown smelting furnaces. The process of causing a secondary flow around the particles comprises the following steps: When a pressure gradient is generated, a pressure gradient force acts on the particles; at the same time, the gravity is considered in the gravitational field; The lift consists of the Saffman lift and the Magnus lift ​ By iterative solution, the falling trajectory of the feeding particles and the size range of the material column are obtained.

5. The method of claim 1, wherein the method is characterized by: The process of storing the optimized data in the lance optimization parameter database for storage comprises the following steps: Key optimization indicators in the blowing process are determined, the historical smelting database is called to establish a fuzzy judgment matrix, if the gas content rate has the greatest influence on the comprehensive performance, a higher weight is given; the average speed and the turbulent kinetic energy are the second; Based on the simulation results, a plurality of parameter combinations are generated; the index values under each parameter combination are dimensionless processed to eliminate the dimensional differences; the weights are determined, and the comprehensive scores of each parameter combination are calculated; The parameter combination with the highest comprehensive score is selected, the lance layout is automatically adjusted, the molten bath depth and the blowing cycle are optimized; the optimized parameters are stored in the lance optimization database for storage; and visual display is performed.

6. The method of claim 5, wherein the method further comprises: The process of calling the historical smelting database to establish a fuzzy judgment matrix comprises the following steps: Each pair of indicators is compared to determine the importance of one indicator relative to another indicator; the comparison results of each pair of indicators are quantified, and the quantified comparison results are arranged to obtain a fuzzy judgment matrix; The maximum eigenvalue in the fuzzy judgment matrix is calculated to obtain a consistency ratio; if the calculation result is less than a preset value, the fuzzy judgment matrix is qualified; if it is greater, the weights are adjusted and the matrix is reconstructed again; The weight vector of each index is calculated based on the fuzzy judgment matrix; the weight vector is obtained by solving the maximum eigenvalue and the corresponding eigenvector of the fuzzy judgment matrix; and the weight of each index in the comprehensive evaluation is determined according to the calculation result of the fuzzy judgment matrix.

7. The method of claim 5, wherein the width of the side-blown smelting furnace is enlarged by coupling a plurality of top-blown smelting furnaces. The process of calculating the comprehensive score of each parameter combination includes the following steps: Set the upper and lower limits of the parameters based on historical data, set the value range of each key parameter; generate parameter values using normal distribution, generate multiple parameter combinations; The index values under each parameter combination are dimensionless processed to eliminate dimensional differences, and the dimensionless index values of each parameter combination are weighted and summed according to the determined weight to obtain the comprehensive score; Based on the comprehensive score, adjust the parameter range or increase the number of parameter combinations, and iterate in turn until the preset optimization target is met.

8. The method of claim 5, wherein the method further comprises: The process of storing the optimized parameters in the spray gun optimization database for storage includes the following steps: Based on the numerical simulation results and experimental results, select the oxygen lance structure parameter combination that has the greatest impact on the comprehensive index; adjust the distance between the oxygen lance and the molten pool surface based on the real-time state of the molten pool; Analyze the influence of different molten pool depths on gas content, velocity and turbulent kinetic energy, and select the depth value with the highest comprehensive score; optimize the oxygen lance oxygen supply capacity and nozzle structure to increase the impact depth of the oxygen flow on the molten pool; monitor the molten pool height and flow state through sensors, and automatically adjust the oxygen supply intensity to maintain the molten pool depth within the target range; Divide the blowing period into three stages of initial, middle and late, corresponding to different gun positions and oxygen supply parameters; store the optimized spray gun parameters, molten pool depth and blowing cycle data into the database to form a historical case library.

9. A coupled multi-lance top blown side blown smelting furnace for use in the method of widening a coupled multi-lance top blown side blown smelting furnace according to any one of claims 1 to 8, characterized in that The side-blown bath smelting furnace coupled with multiple top-blowing lances comprises a side-blown bath smelting furnace body, a slag chamber and a siphon at both ends of the furnace body, multiple side-blowing lances and primary tuyeres on the side wall of the furnace body, multiple secondary tuyeres on the side wall of the furnace body above the molten pool, multiple charging ports in the top region of the furnace, a waste heat boiler flue, one splash level hole and one observation hole; one end of the furnace body is provided with a slag chamber separated by a partition wall, with a slag discharge port and a slag chamber flue, for slag-gold separation and slag phase discharge; the other end discharges the matte phase through the siphon and flows into the subsequent blowing process furnace; a slag baffle is arranged on the right side of the slag chamber.

10. A coupled top and side blown smelting vessel according to claim 9, wherein, The submerged top-blowing lance is installed on the furnace body and arranged through the charging port and the waste heat boiler flue.

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