282 results about "Steel mill" patented technology

The invention discloses an industrial park micro-grid optimization scheduling method based on electric furnace load active adjustment. The method comprises the following steps: constructing an economical operation objective function for generating power by using a thermal power generating unit to share blast furnace gas of a steel mill; dynamically adjusting the maximum exchange power between the micro-grid and the public grid by iterating the shrinkage constraint, and calculating a minimum feasible value to reduce basic electricity price expenditure; taking the gear of the electric furnace transformer as an adjusting variable, and constructing a load adjusting constraint model containing a fixed load and an adjustable load; the micro-grid adopts a double-bus topology, power mutual assistance is realized through a back-to-back converter, and a distributed power supply, an energy storage system and a new energy power generation set are configured. The method can efficiently utilize energy and reduce the operation cost; the public network expenditure is reduced by dynamically optimizing power exchange; the system flexibility is improved by flexibly regulating and controlling the load; new energy fluctuation is stabilized, and stability is enhanced; the double-bus structure realizes grid-connected and off-grid switching, improves reliability, and is suitable for iron and steel enterprises to improve the utilization rate of renewable energy sources and reduce operation cost.

The invention discloses an intelligent measurement and control method based on big data, and the method comprises the following steps: 1, collecting flue gas and dust in the whole production process of a refining workshop of a steel mill by combining a differential exhaust fume collecting hood with a furnace front flow guide hood, and conveying the collected flue gas and dust to a dust removal measurement and control equipment terminal through a dust removal pipeline; 2, diffusing and expanding the flue gas along with the completion of each engineering sequence in the refining process of the steel mill, and analyzing key influence factors in a dust trapping stage; 3, dust removal parameter management of different dust removal measurement and control equipment terminals is carried out based on the flue gas dust concentration value; 4, analyzing the influence of working conditions on the dust concentration of the dust removal measurement and control equipment terminal by changing atomization conditions including water pressure and air pressure, and determining the optimal working condition of the whole dust removal measurement and control equipment terminal; the problem of measurement and control data errors caused by gradual reduction of the measurement and control precision of the dust removal measurement and control equipment is solved, and the method has the characteristic of improving the reliability and the precision of the measurement and control equipment in the dust removal environment.

The present invention discloses a zero-emission process for the coordinated treatment of multi-source wastewater in a steel mill. This process features zero-emission selective separation of desalted water and coal gas condensate from a softening station, recovery of natronasite from cold-rolling rinsing wastewater using high-pressure nanofiltration concentrate, coordinated treatment of high-pressure reverse osmosis concentrate with desulfurization wastewater and high-salt solid waste ash, and low-cost treatment of ammonia and nitrogen. The coordinated treatment of multi-source wastewater and high-salt solid waste ash significantly reduces the pollutant content in ash washing water, thereby reducing subsequent wastewater treatment costs and wastewater usage, significantly lowering the disposal costs of solid waste and wastewater, and achieving internal consumption and zero-emission of multi-source wastewater.

The invention relates to the field of industrial anti-interference, in particular to an industrial network working condition coupling frequency spectrum avoiding method and system. The method comprises the following steps: constructing a main / sub-network spectrum interference coupling matrix, fusing multi-node spectrum data to generate a global map, and establishing a conflict probability model to screen a high-risk frequency band; and generating an optimal frequency band matching pair and a reconfiguration instruction set based on the cost matrix and a Hungary algorithm, and finally optimizing an avoidance strategy by taking throughput improvement and interference suppression as rewards by using a Q learning model. According to the invention, the problem that the network coupling relationship is not considered in the traditional spectrum management is solved, the dynamic refined management of spectrum resources in industrial scenes such as iron and steel plants is realized, the interference influence is obviously reduced, and the network communication quality and reliability are improved.

The invention relates to the technical field of ceramics, and particularly discloses green special refractory ceramic slurry as well as a preparation method and application thereof. The green special refractory ceramic slurry is prepared from aluminum oxide, methyltrimethoxysilane-phosphoric acid modified polysiloxane, fluorocarbon emulsion, expanded vermiculite powder, silane coupling agent modified feldspar tailing powder, a dispersing agent, an organic silicon defoaming agent, a polyurethane curing agent and deionized water. After being sintered, the green special refractory ceramic slurry provided by the invention has excellent high-temperature stability, corrosion resistance, thermal shock resistance and mechanical strength, and solves the problems of low high-temperature-resistant upper limit and poor corrosion resistance of the traditional slurry, so that the sintered ceramic adapts to severe high-temperature working conditions such as steel plant converter liners and chemical high-temperature reaction kettle inner walls; and long-term protection requirements of industrial equipment are met.

The utility model relates to the technical field of conveyors, in particular to a belt conveyor for a steel mill, which comprises a frame, a mounting frame, a separating mechanism and a collecting mechanism, an electric drum, a carrier roller and a permanent magnetic drum are arranged on the frame, a conveying belt is sleeved on the electric drum, the carrier roller and the permanent magnetic drum, and the separating mechanism comprises a lifting rod, a lifting plate, a knocking rod, a motor, a turntable and a connecting rod; the collecting mechanism comprises a waste box, an iron slag box and a scraping assembly; the scraping assembly comprises a mounting plate and a scraping plate; the motor drives the lifting rod to move up and down through the rotary disc and the connecting rod, the lifting rod drives the knocking rod to move up and down through the lifting plate to knock the conveying belt, waste and iron slag shake on the conveying belt, and the iron slag is attracted and attached to the surface of the conveying belt through cooperation with the permanent magnet roller. The situation that part of waste materials are pressed on the conveying belt under the adsorption of the permanent magnet roller and fall into the iron slag box along with the iron slag is avoided; therefore, the waste materials and the iron slag are better collected into the waste material box and the iron slag box respectively.

The utility model discloses a chemical looping reaction system for co-processing sintering flue gas and coal gas, which comprises a sintering flue gas reactor, the upper part of the sintering flue gas reactor is connected with a first gas-solid separator, the lower part of the first gas-solid separator is connected with a first material return valve, the first material return valve is connected with a coal gas reactor, and the middle lower part of the coal gas reactor is provided with an overflow port; the overflow port is connected with the sintering flue gas reactor through an overflow pipe, and the sintering flue gas reactor and the coal gas reactor are filled with oxygen carriers. The device has the beneficial effects that the sintering flue gas and various coal gases of the steel mill can be cooperatively treated; heat and oxygen of the sintering flue gas are recycled; pollutants such as NOx, SO2, CO and dioxin in the sintering flue gas are treated; high-quality steam is produced for heat supply or power generation; and CO2 generated by coal gas combustion is enriched.

The invention discloses a method for refining HRB500E molten steel in an LF (ladle furnace) by adopting a slag steel particle slagging process. According to the method, the total slag amount needed by LF refining temperature rise is increased by adding a proper amount of slag steel particles into the LF furnace, the total slag amount needed by LF refining temperature rise is guaranteed by adding a large amount of active lime for slagging in LF refining of HRB500E molten steel, and 2.0-3.0 kg of active lime added for slagging in the LF furnace is effectively reduced for each ton of steel. The method solves the problems that slag steel particles obtained after magnetic separation of slag steel in a steel plant return to the sintering process, the number of treatment processes is large, the recycling economic benefit is poor, and the converter smelting metal Fe recovery rate is low, solves the problem that the submerged arc temperature rising effect is poor in the early stage of HRB500E refining, shortens the power supply time of LF refining lower electrode temperature rising, and improves the production efficiency. And the quantity of active lime and pre-melted refining slag added for LF furnace slagging is effectively reduced.

This utility model discloses a baking device for steelmaking plants, including a baking furnace body, a combustion nozzle assembly, and a slag collection trough. The baking furnace body has a feed inlet at the top and a discharge outlet at the bottom. The combustion nozzle assembly is vertically positioned above the interior of the baking furnace body. The slag collection trough is located below the baking furnace body, with an open top connecting to the discharge outlet. The bottom wall of the slag collection trough is inclined, and a spiral slag discharger rotates within it, with its axis parallel to the bottom wall. This utility model adjusts the height of the injection pipe and nozzle by extending and retracting the first cylinder of the combustion nozzle assembly, thus optimizing baking uniformity for materials of different thicknesses. After baking, the slag falls into the slag collection trough through the discharge outlet and slides along the inclined bottom wall towards the spiral slag discharger. The rotating spiral blades, with a variable pitch structure, push the slag towards the outlet, improving slag discharge efficiency.

An electric arc furnace (10) usable for melting a metal charge (M), the electric arc furnace (10) comprising a vessel (11) having at least one peripheral wall (20) with a top opening (21), a side slag discharge opening (22) and a side input opening (43). A selectively openable roof (15) can be placed over the top opening (21) of the vessel (11), the roof (15) having a central portion (30) with one or more through holes (31) through which electrodes (32) for melting the metal charge (M) can be inserted to provide clearance.

The invention discloses a system and method for treating metallurgical dust and sludge and ferric sulfate slag through a rotary kiln, and the system comprises the rotary kiln which is used for carrying out pelletizing forming, pre-reduction desulfurization and deep reduction on the metallurgical dust and sludge and sulfuric acid slag of an iron and steel plant; the rotary kiln is sequentially provided with a pelletizing section, a pre-reduction desulfurization section, a deep reduction section and a discharging section from the kiln tail to the kiln head, and an inclined check ring is arranged in the pelletizing section; the kiln head of the rotary kiln is provided with an air nozzle, and the kiln tail is provided with a smoke outlet. The surface cooler is used for cooling the rotary kiln flue gas from the rotary kiln to obtain low-temperature flue gas; the zinc sulfate preparation module is used for treating the low-temperature flue gas and preparing a zinc sulfate product. According to the method, resource utilization and high-value utilization of the metallurgical dust sludge and the sulfuric-acid slag of the iron and steel plant can be achieved, low-sulfur and high-iron metallized pellets and zinc sulfate products are produced, and comprehensive utilization of iron, zinc and sulfur in the metallurgical dust sludge and the sulfuric-acid slag is achieved.

The utility model discloses a vertical dust removal pipe with an automatic dust removal function, and relates to the technical field of dust removal devices. The dust removal device comprises a dust removal header pipe, a dust removal branch pipe which is perpendicular to the dust removal header pipe and internally communicated with the dust removal header pipe is arranged below the dust removal header pipe, and a dust removal valve is arranged on the dust removal branch pipe; inclined flow guide pipes are respectively arranged above the dust removal valve and on the two sides of the dust removal branch pipe, the upper ports of the flow guide pipes are connected to the dust removal main pipe, the lower ports of the flow guide pipes are connected to the dust removal branch pipe, and the interiors of the flow guide pipes are communicated with the interiors of the dust removal main pipe and the dust removal branch pipe. The utility model provides the vertical dust removal pipe with the automatic dust removal function, and the vertical dust removal pipe can automatically clean accumulated dust in front of a dust removal valve under the condition of not consuming extra electric energy, so that the problem of dust accumulation in front of the dust removal valve caused by original design errors of a dust removal pipeline of a steel plant is solved.

The invention discloses an ironmaking group production optimization method based on the relation between the iron ore general index and the lump ore premium price, and belongs to the technical field of blast furnace ironmaking in the iron and steel industry. The price comparison relation between the standard fine ore and the Australian lump ore is measured and calculated according to the general index of iron ore and by combining the sintering production process cost of an iron making plant of an iron and steel enterprise and the coal coke price for a blast furnace, reasonable ore use for iron making is guided, and the iron making cost is reduced. Meanwhile, on the basis of the price comparison relation between the fine ore for sintering and the lump ore for the blast furnace under the enterprise production condition, the relation between the market iron ore general index and the lump ore premium price is compared, the purchase plan of the fine ore and the lump ore is quickly decided, iron ore resource changes are responded, and market opportunities are grasped. According to the method, the relation model of the lump ore premium price and the general index is established, the ironmaking raw material structure and the production organization are dynamically optimized, and the problem that cost optimization is difficult to achieve in raw material purchasing and production organization of enterprises is solved.

1. A direct iron ore reduction process, in which an NH3-containing gas feed (24a) is fed to a gas reformer (25) where it is reformed to obtain a hydrogen-containing reducing gas (25a, 25b), at least a portion of which is fed to a direct reduction reactor (1) where iron ore (2) is subjected to direct reduction with the reducing gas (25a, 25b) to obtain directly reduced iron (30), and during reforming of the hydrogen-containing reducing gas (25a), NH3 in the gas feed (24a) is subjected to the dissociation reaction 2NH3 → N2 + 3H2.

The utility model discloses a steel plant air feeder which comprises an air feeder body, the air feeder body comprises an air inlet pipe and an air outlet pipe, and a filter frame is arranged in the air inlet pipe. According to the air feeder, the check block is pushed until the insertion block enters the fixing table, then the positioning block on the insertion block on the bottom surface of the air feeder body is connected with the positioning groove in the upper surface of the bottom end of the fixing table in an inserted mode, when the check block enters the through hole, the insertion block can be limited, and therefore the air feeder body can be installed and fixed, and after installation and fixation, the air feeder body can be fixed. When the air feeder body breaks down and needs to be disassembled and overhauled, a push block at one end of a push rod is pushed, the push block can push a stop block to move, when the stop block is far away from a through hole, an insertion block is moved upwards, and when a positioning block on the bottom surface of the insertion block is far away from a positioning groove in a fixing table, the insertion block is moved upwards. And therefore, the air feeder body can be conveniently disassembled and overhauled, and the practicability of the air feeder body can be improved.

The invention provides a steel mill material taking behavior recognition method and system based on target detection, and relates to the technical field of computer vision, and the method comprises the steps: collecting a historical steelmaking site video; processing the historical steelmaking site video through a mask algorithm to generate an interest image; yOLOv5 is used as a framework, a target detection model is established, the target detection model comprises a backbone network module, a neck module and a detection head module, and the backbone network module and the neck module each comprise a CBAM attention unit; inputting the interest image into a target detection model for training until the loss function value of the target detection model is smaller than a preset loss function value; obtaining a to-be-identified steelmaking site video; inputting a to-be-identified steelmaking site video into the trained target detection model, and outputting a detection result; and outputting a steel mill material taking behavior identification result according to a detection result. Safety accidents in a working place can be effectively prevented and reduced, and the life safety of workers is protected.

The invention discloses a converter smelting determination method and device, electronic equipment and a storage medium, and belongs to the technical field of converter smelting. The method comprises the following steps: matching a first gas content in an evaporative cooler before a converter to be detected is loaded with a first preset gas content standard, and determining a matching result; based on a matching result, determining whether to start blowing of the to-be-detected converter or not; after it is determined that blowing of the to-be-detected converter is started, whether a blowing permission instruction for blowing the to-be-detected converter is generated or not is determined on the basis of the second gas content at the outlet of the electrostatic dust collector before blowing and a second preset gas content standard; and after it is determined that the blowing permission instruction for blowing the converter to be detected is generated, the oxygen lance is controlled to descend in response to the blowing permission instruction, and the blowing process is started based on the preset oxygen lance control parameters corresponding to the oxygen lance. According to the invention, standardization of blowing of converters of different steel plant equipment can be realized. And the production efficiency and the yield of steel are further improved.

The invention discloses a steel plant management statistics intelligent data processing system and method. Comprising a converter original report module, a refining furnace original report module, a refining furnace production report module, a steelmaking production report module and a steelmaking three-shift report module. And each module is respectively provided with functions of data display, query, export and report updating. According to the invention, by integrating the related data in the production process of the steel plant and intensively displaying various types of data in different pages, unified management of the data is realized. Meanwhile, convenient data entry, modification and deletion operation and efficient query and export functions are achieved, the time and labor cost of data management are greatly saved, and the data management efficiency is improved.

The application discloses a steel mill converter management and statistics system and method. The system comprises a production process monitoring module, a converter operation performance module, a production history tracing module, a converter stock material module and a data processing updating module. The production process monitoring module is used for monitoring and filling important data in the converter production process. The converter operation performance module is used for collecting various signal data and manually filling data in the converter production process. The production history tracing module is used for automatically and regularly counting the converter operation performance according to a set statistical method. The converter stock material module is used for setting the identification logic of part signals. The data processing updating module is used for regularly updating the data by combining the signal identification algorithm and the manual field calibration, supporting the query and screening based on the user selection, and providing the data export and backup functions. The application automatically collects, manually fills and automatically counts the related data in the converter production process of the steel mill, greatly saves the time and labor cost of data management, and improves the data management efficiency.

METHODS FOR TREATING WATER WITH ACTIVATED CARBON POWDER TO REDUCE ORGANIC MATTER CONTENT. The present methods described reduce the amount of organic matter in water, including reducing the total amount of organic carbon in the water. The method includes adding activated carbon powder to the water; mixing the activated carbon powder in the water; and separating the activated carbon powder from the water. In addition, a method for reducing the glycol content in water containing glycols, and a method for reducing the glycol content in a wastewater stream in a steel mill containing glycols are described.

The invention relates to the technical field of converter units of steel works, in particular to a converter waste heat recovery circulating system and oxygen lance intelligent collaborative energy-saving system and method. A feed pump motor; a PLC control end; oxygen blowing equipment; the HMI display unit, the transformer and the frequency converter are electrically connected through a high-voltage isolating switch, the other end of the frequency converter is electrically connected with a water feeding pump motor, one end of the frequency converter is electrically connected with the PLC control end, and one end of the PLC control end is connected with the local control box, the HMI display unit and the oxygen blowing equipment. The monitoring picture also displays the running state of the water feed pump, the rotating speed and current of the motor, the power-on feedback and fault of the frequency converter and various state signals, the alarm picture can provide the alarm function for the fault of the water feed pump, the fault of the frequency converter and the like, and a recording curve is designed for key data. Frequency conversion adjustment of a newly-added frequency converter of a water feeding pump in a converter waste heat recovery circulating system is interlocked with oxygen lance operation.

The utility model discloses a fan-shaped section roller with a built-in annular flow guide cooling structure, which relates to the technical field of fan-shaped section rollers and comprises a fan-shaped section roller component, bearing seat components are arranged on two sides of the fan-shaped section roller component, oil passing components are arranged at the upper ends of the two groups of bearing seat components, and a mounting cavity box is arranged on one side of each bearing seat component. A sealing through pipe is arranged on one side of the mounting cavity box, the sealing through pipe penetrates through the mounting cavity box and the bearing seat assembly to extend to the outer side of the bearing seat assembly, and two sets of first bearings are arranged on one side of the mounting cavity box; the fan-shaped section roller assembly comprises a fan-shaped roller body, and the two ends of the fan-shaped roller body pass through two sets of adjacent first bearings respectively, so that cooling of the bearing seat assembly and the fan-shaped section roller assembly can be achieved at the same time, the temperature of the fan-shaped section roller assembly during working is reduced, the roller can operate normally, the working stability of a rolling mill of a steel plant is improved, and the service life of the rolling mill is prolonged. And the service life of the device is prolonged.

The invention belongs to the technical field of metallurgical slag resource utilization, and particularly relates to a nickel smelting slag recycling process. Comprising the following steps: mixing and drying stainless steel pickling sludge, Bayer process red mud and coke powder to prepare iron-containing coke powder; setting a slag pot position and a spray gun position; when the molten nickel smelting slag falls down, iron-containing coke powder is sprayed out at a constant speed through argon by using a spray gun, the molten nickel smelting slag is blown away, and then a reduction reaction is carried out; a fluxing agent is added into the reduced molten nickel smelting slag, then vacuumizing is conducted, magnesium is reduced and evaporated, magnesium steam is collected and cooled, and elementary substance magnesium and magnesium-removed molten nickel smelting slag are obtained; coke powder and metal carbide powder are added into the magnesium-removed molten nickel smelting slag, cooling is conducted after reaction, reaction materials are taken to be crushed, ground and magnetically separated, Fe-Ni-Cr enriched alloy is obtained and used for a steel plant, remaining materials are used as aggregate in a cement plant, the production process is simple, the recovery process is short, energy consumption of equipment can be greatly reduced, and the metal recovery rate is increased.

The utility model belongs to the technical field of filter pressing, and particularly relates to a steel mill sewage treatment diaphragm filter press which comprises a filter press body, the left side of the filter press body is communicated with the first liquid inlet pipe; the filtering mechanism is located on the left side of the first liquid inlet pipe, and the filtering mechanism is used for filtering oil dirt; the installation mechanism is located at the top of the filtering mechanism, the installation mechanism is used for facilitating workers to quickly maintain a filtering plate, the filtering mechanism comprises a filtering box, a second liquid inlet pipe, an oil stain filtering plate, a sealing plate and an installation plate, and the left side of the first liquid inlet pipe is communicated with the filtering box. According to the filter press provided by the invention, oil dirt can be filtered and is prevented from blocking filter cloth to influence normal operation of the filter press, and the oil dirt filter plate can be quickly detached through matched use of the mounting mechanism, so that the oil dirt filter plate is convenient to replace and maintain.

The invention relates to an ESP inlet airflow distribution assembly which is characterized in that three layers of airflow distribution plates are distributed on the section of an inlet machine shell (1) from small to large, an upper group of rapping devices (6) and a lower group of rapping devices (7) are arranged on the first layer of airflow distribution plate (2), and a group of rapping devices (8) and a group of rapping devices (9) are respectively arranged at the upper parts of the second layer of airflow distribution plate (3) and the third layer of airflow distribution plate (4); a horizontal support (5) used for overhauling the forward beating device is arranged on the first layer of airflow distribution plate and the second layer of airflow distribution plate, laying of temporary platform overhauling is facilitated, and the overhauling requirements of first, second and third layers of airflow distribution plate rapping devices and distribution plates are met. According to the scheme, the airflow distribution plate and the rapping device at the inlet are optimally designed, so that the production goals of high efficiency, energy conservation and environmental protection are achieved, references are provided for dry dust removers of various steel mills, and the practical application value is very high.

The application discloses a control method of a pusher, relates to a steel production device, and comprises the following steps: acquiring the actual number of a group of billets, setting the action times of the pusher according to the actual number, when the group of billets is conveyed to a steel mill batching area in front of the pusher, making the pusher push the group of billets to move to a steel preparation position, detecting whether there is a billet in a steel storage groove, if there is no billet in the steel storage groove, triggering the pusher to perform a push action, and reducing the action times by one until the action times are zero. The application realizes automatic push control of the group of billets, improves the overall equipment automation degree and production efficiency of the area.

The utility model relates to a replacing system for a crane beam in a limited space of a steel plant. The replacing system comprises a converter platform and a replacing device, the replacing device is located on the converter platform and can move on the converter platform, the new crane beam is placed on the converter platform, and the replacing device is used for dismantling the old crane beam and installing the new crane beam; by arranging the replacing device, the converter platform does not need to be reinforced, the construction period is shortened, the construction cost is saved, and the crane beam is convenient to install and replace; meanwhile, the rapid recovery capacity of the production line is guaranteed, the construction period is guaranteed, and potential safety hazards caused by the complex environment are avoided.

The invention discloses a steel mill sludge solid waste resource utilization method, which comprises the following steps: collecting converter primary dedusting ash and converter secondary dedusting ash, arranging a cofferdam in a material yard by using the converter secondary dedusting ash, pouring sludge into the cofferdam, adding the converter secondary dedusting ash in the sludge pouring process for mixing, and pouring the sludge into the cofferdam. Obtaining a waste tail mud semi-finished product; and adding primary fly ash of the converter into the semi-finished product of the waste tail mud, and mixing and stirring to obtain a finished product of the waste tail mud. The method has the beneficial effects that in a cold rolling plant and a power plant, the primary dust removal system and the secondary dust removal system are common equipment, so that raw materials can be directly obtained from the original equipment, a new production line does not need to be established, new equipment does not need to be purchased for processing, and the production cost is saved; the method does not need high energy consumption caused by drying in a traditional process, the treatment process is simple and effective, and the advantages of being simple in process, low in energy consumption and low in equipment investment are achieved.

The negative pressure dust collection device for sintering workshops in steel plants provided by this invention includes a filtration and purification system and a vacuum pump unit connected to the filtration and purification system. The filtration and purification system includes a support frame, a first processing chamber, and a second processing chamber. The first processing chamber is mounted on the support frame and contains a filtration unit. The second processing chamber is mounted on the support frame and connected to the first processing chamber, and contains a purification unit. The filtration and purification units can effectively remove dust from the flue gas discharged from the sintering workshop, effectively remove dust cakes adhering to the filter cartridges, reduce filter material wear, improve energy utilization, thereby reducing compressed air consumption, which is beneficial for reducing production costs and extending the service life of the dust collection equipment.

This invention relates to the field of plant structure technology and discloses a large-scale double-span steelmaking plant structure and construction method, including a base and a roof. Multiple bases are sequentially arranged from front to back on both sides of the lower part of the roof, with adjacent bases abutting against each other. Support plates are fixedly installed on both sides of each base. Mounting holes are fixedly installed on the lower surfaces of both sides of the roof, corresponding to the positions of the support plates. Support rods are inserted into the inner sides of each mounting hole, and the lower ends of each support rod are fixedly connected to the corresponding support plate. First mounting plates are fixedly installed on the lower surfaces of both ends of the roof, and second mounting plates are fixedly installed on the upper surfaces of the bases. Wall panels are abutting between the first mounting plates and the second mounting plates. This large-scale double-span steelmaking plant structure and construction method allows for rapid disassembly and replacement of damaged wall panels, greatly improving the efficiency of wall panel replacement.