52results about How to "Realize comprehensive utilization" patented technology

The application relates to the technical field of animal breeding environment control, and discloses a ventilation control method and system for an animal breeding site. The method collects animal behavior data and environmental factor data in the breeding site in real time, constructs an animal group behavior network based on the animal behavior data, and identifies a group behavior mode by using a graph neural network. The environmental factor data and the group behavior mode are coupled by a nonlinear weighted fusion algorithm, a multi-factor linkage prediction model is constructed to obtain a group stress response, historical stress data is further combined, a space-time graph neural network is used to establish a group stress response propagation model in the group to obtain a stress propagation path, and the control parameters of at least one environmental control device in a ventilation system and a temperature and humidity control system are adjusted based on the stress propagation path. The application can realize ventilation control based on linkage of group behavior and environmental factors and is suitable for complex breeding scenes.

The utility model relates to a cooking machine technical field, concretely discloses a sandwich machine. The sandwich machine, including the upper machine group and the lower machine group, all are provided with cooking assembly in the upper machine group and the lower machine group respectively, and the cooking assembly includes the heating body, the energy -conserving reflection board and the cooking surface, and the heating body is carbon fiber heating tube, through such structural design mode, carbon fiber heating body directly carries out the heating to the cooking surface, and through the energy -conserving reflection board mirror surface reflection of relative setting, the thermal energy of heating body is further reflected to the cooking surface, and the heating efficiency can be greatly improved through the heat radiation, the rapid heating can be realized, and the maximum degree heat energy utilization is realized. Meanwhile adopt detachable heating body, can be convenient to maintain after the heating tube damage or glass damage, save the maintenance cost and reduce the maintenance difficulty.

This invention discloses a method, apparatus, terminal, and medium for scheduling video analysis tasks in a heterogeneous application system. The method includes: acquiring the computing power parameters and video decoding parameters required for the video analysis task; determining the scheduling strategy and corresponding computing modules for the video analysis task based on the required computing power parameters, video decoding parameters, and the computing power parameters and video encoding / decoding parameters of each computing module; and scheduling the video decoding and computing tasks within the video analysis task to the corresponding computing modules according to the scheduling strategy to execute the corresponding tasks. This invention utilizes video data communication transmission between multiple computing modules in a heterogeneous application system to schedule multiple computing modules to complete video analysis tasks, maximizing the utilization of the computing power and video encoding / decoding capabilities of the heterogeneous application system, increasing the number of video analysis task processing paths supported by the system, and improving the efficiency of video analysis.

This application provides a rainwater harvesting and utilization system for vertical greening buildings, relating to the field of green building. It includes a downpipe and a water storage tank embedded in the base of the building. One end of the downpipe connects to the top of the building, and the other end of the downpipe has a first branch pipe and a second branch pipe. One end of the first branch pipe connects to the downpipe, and the other end has a detachable sealing cap. One end of the second branch pipe connects to the downpipe, and the other end supplies rainwater to the water storage tank. The second branch pipe is equipped with a filter mechanism for filtering rainwater. The water storage tank contains a water pump and a sprinkler pipe. The water pump pumps the rainwater from the storage tank through the sprinkler pipe for watering the plants. This application has the effect of collecting and reusing rainwater without causing silt accumulation and clogging.

The utility model discloses a kind of cyclic treatment systems of silane gas decomposition tail gas in polysilicon production, including at least one group by adsorption tower and analysis tower composition pressure swing adsorption device, the gas inlet end of pressure swing adsorption device is equipped with tail gas compressor, tail gas compressor connects the tail gas outlet of silane gas decomposition device, the product gas outlet end of pressure swing adsorption device is equipped with adsorption product gas tank, adsorption product gas tank is connected to silane gas decomposition device by circulating hydrogen pipe, the pressure relief end of pressure swing adsorption device is connected to cold hydrogenation device.The utility model utilizes the principle of pressure swing adsorption to separate and impurity removal hydrogen in silane gas decomposition tail gas, obtained product hydrogen and pressure relief gas can be used as circulating hydrogen and cold hydrogenation device respectively, without material waste, the setting of tail gas compressor and adsorption product gas tank can guarantee the stability of system control and circulating hydrogen recovery.

The utility model relates to the technical field of waste heat recovery, and disclose an energy -conserving and environment -friendly coffee baking waste heat recovery device, including base, the base top is provided with recovery mechanism, the recovery mechanism top is provided with the equalizing mechanism. The device sets up recovery mechanism, can effectively recycle the waste heat produced in the coffee baking process. The air inlet pipe is connected with the exhaust pipe of coffee baking machine, and the high-temperature waste gas produced in the baking process is introduced into the first box body, and the heat in the waste gas is transmitted to the water in the second box body through the circulating pipeline, realizing the effective recovery and utilization of heat, improving the energy utilization efficiency, meeting the concept of energy saving and environmental protection, the filter plate design in the recovery mechanism can filter the impurities in the waste gas, prevent the impurities from entering the subsequent circulating system, and ensure the stable operation of the system. The filter plate is fixed through the rotating plate and the bolt, and is convenient to disassemble, convenient for regular cleaning or replacement, reduces the maintenance cost, and prolongs the service life of the equipment.

This invention discloses a method for solidifying arsenic using copper slag. The method involves adding arsenic-containing substances to copper slag, mixing it thoroughly, adding a sulfuric acid solution with a mass concentration of 10-25%, stirring evenly at room temperature, molding, demolding, and curing to achieve the purpose of solidifying arsenic. This invention utilizes the chemical reaction between copper slag and sulfuric acid solution to harden the material, thereby generating strength. When used as a casting material, it not only has the characteristics of fast setting time, good stability, and good durability, but also has excellent adhesion, realizing the comprehensive utilization of industrial waste.

The application discloses a method and system for comprehensively utilizing high-magnesium nickel sulfide ore by a low-temperature oxygen-rich method. The method comprises the following steps: obtaining pre-leaching residue by pre-leaching and magnesium removal with high-magnesium nickel sulfide ore as raw material; obtaining activated ore slurry by mechanically activating the pre-leaching residue; and obtaining a nickel-containing leaching solution by low-temperature oxygen-rich leaching of the activated ore slurry. The application has wide application range, is simple and reliable, easy to control, and low in investment cost, and can convert metals into corresponding products, so that high-magnesium nickel sulfide concentrate can be treated at low cost and high efficiency.

This invention discloses a high-speed centrifugal water injection purification and dewatering method for marine silica sand. This invention relates to the field of silica sand purification technology and includes the following steps: activating the silica sand; sieving the activated silica sand to remove impurities; mechanically grinding the sieved silica sand; treating the ground silica sand with centrifugal water injection, using centrifugal force combined with water injection to remove chloride ions and harmful substances from the silica sand; and dewatering the treated silica sand to obtain finished silica sand. By combining activation treatment, mechanical grinding, and centrifugal water injection purification, chloride ions and impurities such as shells and mud can be effectively removed from the silica sand. This process adopts a step-by-step treatment method: first, activation loosens the colloids on the surface of the silica sand; then, mechanical grinding breaks down the colloidal layer structure; and finally, centrifugal force combined with water injection separates the soluble salts from the silica sand, achieving deep purification of the silica sand.

This invention discloses a method for the comprehensive utilization of calcium and magnesium solution and CO2, comprising the following steps: S11: using high-salt calcium and magnesium wastewater and CO2 tail gas as raw materials, the high-salt calcium and magnesium wastewater contains CaCl2 and MgCl2, water-soluble amine is added to the high-salt calcium and magnesium wastewater and mixed, and CO2 tail gas is introduced to carry out a mineralization reaction, generating calcium carbonate precipitate, water-soluble amine hydrochloride and magnesium bicarbonate; S12: solid phase calcium carbonate is obtained by solid-liquid separation, oil-soluble amine is added to the separated liquid phase, HCl in the water-soluble amine hydrochloride is extracted, the water-soluble amine is regenerated, and oil-soluble amine hydrochloride and magnesium carbonate trihydrate precipitate are generated; S13: after phase separation, the aqueous phase is separated by solid-liquid separation to obtain liquid phase water-soluble amine and solid phase magnesium carbonate trihydrate, and the oil-soluble amine hydrochloride in the oil phase is pyrolyzed to obtain regenerated oil-soluble amine and HCl gas. This invention utilizes a water / oil dual-phase amine-enhanced calcium-magnesium solution mineralization CO2 and an extraction-pyrolysis synergistic regeneration cycle process to achieve harmless treatment and resource utilization of both calcium-magnesium-containing high-salt wastewater and CO2 tail gas.

This specification provides a training method, text processing method, and system for a large language model, comprising: obtaining a sample set, the sample set including multiple sample texts; obtaining a first large language model to be trained, the first large language model employing a linear attention mechanism; reusing at least some model parameters of the first large language model from pre-trained model parameters of a second large language model; the second large language model employing a non-linear attention mechanism; training the first large language model using the sample set; and obtaining a trained target large language model. This method can accelerate the training process, reduce computational and time costs, and improve the performance of the target large language model. Furthermore, it can optimize the computational complexity of attention to linear levels and optimize storage space.

The utility model relates to kitchen garbage treatment technical field, concretely discloses a kitchen garbage cleaning and impurity removing device, include: box, the top fixedly connected with feed port at the back of box, the top fixedly connected with extruding bin of one side of box inboard wall near feed port, the inside fixedly connected with first hydraulic telescopic link of fixed pipe, the inside bottom wall fixedly connected with first filter screen of extruding bin, the output fixedly connected with first baffle of second hydraulic telescopic link, the bottom of one side of extruding bin is provided with discharge gate, the inside bottom wall fixedly connected with second filter screen of buffer bin, the utility model discloses through the collocation use of first filter screen, extruding bin, cleaning bin, crushing chamber, bubble tube, vibrating motor and second crushing roller, makes kitchen garbage to be able to experience extruding deoiling, washing and crushing collection's process, makes kitchen garbage be cleaned more perfect, and oil water can be collected to the greatest extent when extruding, avoids the spatter of the oil stain in the inside of box, causes the condition of peculiar smell.

The utility model discloses a kind of sodium sulfate wastewater refining device, including pretreatment component, primary evaporation crystallization component, waste heat recovery component, secondary evaporation crystallization component, solid-liquid separation component, liquid storage tank and control component, the utility model is guided slurry to form cyclone by multiple evaporation crystallization component's vertical evaporation tower inner spiral guide vane, cooperate the closed loop circulation structure of forced circulation heater, strengthen heat exchange uniformity;Waste heat recovery component is compressed after evaporator top secondary steam and is transported by gas pipeline, realizes heat source utilization to reduce energy consumption;The three-stage filtration mechanism of solid-liquid separation component is classified by stepped screen group and intercepts crystal, fine separation is carried out to slurry in combination with horizontal centrifuge, ensure the efficient separation of sodium sulfate crystal and liquid;Each component is connected in series by modularization layout to reduce fluid conveying resistance, the real-time coordination pump valve and sensor operation of the PLC controller of control component, guarantee system continuous stable operation.

The utility model discloses an electrode sheet winding drum structure, including winding drum, winding assembly and base tape, winding drum inside is provided with winding assembly, and winding drum is set up winding through -hole along its axial direction, and the one end of base tape is wound on winding assembly, and the other end is through winding through -hole and extends winding drum. The utility model discloses still a kind of including the unwinding device of electrode sheet winding drum structure. The utility model has the advantages that, through winding drum inside is provided with the winding assembly of winding base tape, not only make after electrode sheet completely separates from winding drum, base tape will continue to follow electrode sheet and unwind, through base tape replaces the residual electrode sheet on winding drum, can maximum degree realize the utilization of electrode sheet, also due to the fixation of winding assembly to base tape, make base tape not scatter under the high -speed rotation state of winding drum, can be applied to automatic cutting volume change volume and artificial cutting volume change volume equipment, and applicability is wider.

This invention relates to the field of motor control, and more particularly to a positioning and calibration method for a gantry mechanism of a bonding machine based on solder joint alignment. The method includes: monitoring the speed difference and real-time displacement deviation of two independently controlled servo motors on both sides of the gantry mechanism; calculating the predicted displacement deviation on both sides of the gantry mechanism based on the speed difference and real-time displacement deviation; calculating the deflection angle of the gantry mechanism's crossbeam relative to the guide rail length direction based on the predicted displacement deviation; determining the target speed of the two servo motors based on the deflection angle; and determining the change process of the current speed towards the target speed. This invention utilizes the length of the crossbeam to ensure that the generated corrective torque is physically matched with the required angular deviation; it can automatically plan a smoother speed change rate under high-risk conditions with relatively large deflection angles; and it employs a relatively fast speed change process under normal fine-tuning conditions with relatively small deflection angles, thereby ensuring the system's rapid response capability to minor disturbances.

This invention provides a mechanical waist structure applicable to the field of artificial intelligence. The mechanical waist structure includes a support section, a joint section, a linkage section, and a limiting section. The support section forms a centrally located accommodating space, serving as overall motion support and enabling rotational freedom of the mechanical waist structure. The joint section is movably connected to the support section and disposed within the accommodating space, enabling the mechanical waist structure to move in both forward / backward and left / right directions. The linkage section is connected to the joint section via the support section, and when driven by an external force, it drives the joint section to move, enabling two degrees of freedom for the joint section. The limiting section is disposed on the support section; when the mechanical waist structure returns to its zero position, the limiting pin of the limiting section aligns with the limiting hole of the output plate structure of the linkage section. This invention also provides a control method for the mechanical waist structure and a robot.

This utility model discloses a slag resource recovery system. The key technical features include a pretreatment device, a crushing device, a magnetic separation device, a jig separation device, a shaking table separation device, and an eddy current separation device. The pretreatment device is used to screen the slag. The crushing device is connected to the pretreatment device and is used to crush large pieces of material. The magnetic separation device is connected to the crushing device and is used to screen iron impurities in the slag. The jig separation device is connected to the magnetic separation device and is used to separate slag particles smaller than 15mm after pretreatment, crushing, and iron removal. The shaking table separation device is connected to the jig separation device and is used to separate the bottom material. The eddy current separation device is connected to the jig separation device and is used to separate the jig overflow. This slag resource recovery system can effectively separate slag and recover metals from it to the maximum extent.

The utility model relates to the technical field of sewage treatment, and disclose a coal mine wharf sewage treatment is with multilayer filtration's clean water pool, including clean water pool body, clean water pool body includes the aeration tank for treating coal mine wharf sewage, is located the collecting piece for collecting gas in aeration tank top, is used for treating the gas after collection's purification device and gas recycling device, and purification device includes dust removal dehydration unit, desulfurization deodorization unit and oxygen enrichment unit, and dust removal dehydration unit, desulfurization deodorization unit and oxygen enrichment unit are sequentially connected and set up. The clean water pool of the application has realized the whole process collaborative treatment of sewage pretreatment, aeration reaction, gas recovery purification and recycling, can effectively remove coal dust, water vapor, hydrogen sulfide, volatile organic compounds and other pollutants in gas, and improve oxygen concentration, both avoid secondary pollution, and realize the resource recovery of coal dust.

The utility model belongs to photovoltaic panel installation component technical field, specifically point to a kind of self waterproof photovoltaic carport, including base, support frame is equipped on the base, support frame is equipped on the support frame, the upper end of support frame body is equipped with fixed longitudinal pipe, the side of support frame body is equipped with edge pipe, one end of fixed longitudinal pipe is equipped on the outer side wall, the other end of fixed horizontal pipe is connected on the side wall of edge pipe, the upper end of support frame body one side is equipped with limit piece, solar photovoltaic panel can be detachably installed on fixed longitudinal pipe;The setting of fixed longitudinal pipe and fixed horizontal pipe, ensure that rainwater can quickly gather and smoothly discharge, avoid the problem of fixed longitudinal pipe and fixed horizontal pipe waterlogging, to enhance the waterproof performance of carport whole, prolong service life.

This invention provides a wellbore nitrogen atomization acidizing system and method, belonging to the field of reservoir stimulation technology. The system includes: an atomization unit with an atomization outlet located inside the wellbore for generating initial acid in an atomized state; an acid recovery unit equipped with an acid recovery pump for recovering acid and obtaining a mixed acid solution; a separation unit for separating the mixed acid solution to obtain the initial acid solution and injecting it into the atomization unit; a control unit for determining an acid distribution scheme based on real-time acidizing status information, generating a corresponding acid supply command based on the scheme, and distributing the command to the acid supply unit; and an acid supply unit connected to the inlet of the atomization unit for supplying the initial acid solution to the atomization unit based on the acid supply command. This invention effectively improves acidizing performance, reduces acid loss, and is adaptable to complex wellbore environments.

The application discloses a method for calcining cement raw materials in a methane atmosphere and co-producing carbon materials. The method comprises the following steps: mixing cement raw materials with solid waste in a reactor under a methane atmosphere, and calcining to obtain cement clinker, carbon monoxide, hydrogen and solid carbon materials; the solid waste is selected from at least one of the following: blast furnace slag, high-iron fly ash, steel slag, stainless steel slag, iron oxide scale and red mud. The method effectively reduces carbon emissions in the cement production process, and simultaneously produces synthesis gas and carbon materials, greatly improving the economic efficiency and environmental benefits of the process. In addition, the catalyst can come from by-products of the steel and aluminum smelting industry, realizing waste resource utilization. The technology provides a new way for the green and low-carbon transformation of the cement industry.

The novel low-carbon recycled aggregate surface strengthening micro-powder carbon mineralization integrated equipment disclosed by the application comprises a rack, a carbonization cylinder one and a carbonization cylinder two, the carbonization cylinder one is horizontally installed on the rack through vibration, the top surface of the carbonization cylinder one is provided with a lower hopper, the top surface of the carbonization cylinder one is provided with an inlet, the lower hopper is provided with a buffer sealing structure, the bottom surface of the carbonization cylinder one is provided with a first discharge port and a second discharge port, the first discharge port is provided with a filter screen, the lower portion of the carbonization cylinder one is provided with the two carbonization cylinder two, the upper ends of the two carbonization cylinder two are in one-to-one correspondence with the first discharge port and the second discharge port and are communicated with the first discharge port and the second discharge port, the carbonization cylinder two is provided with a stirring rod, the lower ends of the two carbonization cylinder two are provided with lower outlets, the top surfaces of the two carbonization cylinder two are respectively provided with an air inlet and a liquid inlet, the carbonization cylinder one is provided with a rod body and a spiral blade, the rod body is provided with a rubbing part, and the surface of the rubbing part is provided with a stripping surface. Compared with the prior art, the carbonization effect of the aggregate is better.

The utility model belongs to the technical field of sorting procedure, especially relates to a sorting procedure green environmental protection water balance system, including the pit water storage area, the ore dressing operation main factory building, the roller grinding operation area, the high -placed water pool, the floating boat pump station, the concentration tank, the ring water pump house, the buffer pool, the floating boat pump station is located in the pit water storage area, the floating boat pump station connects the high -placed water pool, the high -placed water pool connects the ore dressing operation main factory building, the roller grinding operation area and the ring water pump house, the ring water pump house and the concentration tank are provided with near the ore dressing operation main factory building, the drainage of ore dressing operation main factory building passes through the tailing way and leads to the concentration tank, the concentration tank connects the ring water pump house, the ring water pump house connects the water inlet of ore dressing operation main factory building, the buffer pool is provided near the ring water pump house, the buffer pool connects the pit water storage area, the automatic liquid level device is equipped in the buffer pool, the roller grinding operation area connects the ore dressing operation main factory building. The utility model will effectively control production wastewater storage water level, effectively reduce enterprise new water unit consumption, effectively control production water and so on and discharge.

This invention belongs to the technical field of comprehensive utilization of phosphorus iron slag and lepidolite, specifically disclosing a rubidium- and cesium-doped lithium iron phosphate material, its preparation method, and its application. The rubidium- and cesium-doped lithium iron phosphate cathode material provided by this invention has a Li, Rb, and Cs mass ratio of 4:(0.3~0.9):(0~0.6). Specifically, lepidolite powder is roasted with concentrated sulfuric acid to obtain roasted slag, which is then treated with water to obtain a lithium-containing solution. Finally, the lithium-containing solution is mixed with phosphorus iron slag and subjected to a hydrothermal reaction to prepare the lithium iron phosphate material. This invention innovatively demonstrates that under hydrothermal reaction conditions, the lithium extraction solution from lepidolite can react with phosphorus iron slag in situ to generate rubidium- and cesium-doped lithium iron phosphate, improving the recycling performance of lithium iron phosphate and achieving high-value utilization of waste residue.

The application discloses an energy-saving process for activating biochar by wood vinegar steam through a thermo-chemical-physical coupling method, wherein wood vinegar steam is used as an activating agent instead of water vapor, and wood vinegar liquid is recycled in the process, serving as a heat carrier and participating in a thermo-chemical reaction to release heat, so that energy is saved and emission is reduced, and the process is a green new process, energy saving over 60%, wood vinegar liquid utilization rate 100%, and no waste liquid discharged. Due to the ionization of acetic acid, a characteristic component, the process also meets the swelling action principle of acid activation, so that biochar is more easily activated, and has double effects, and is a thermo-chemical-physical coupling method. The wood vinegar liquid generated in the biochar process is used as an activating agent, so that the problems of high energy consumption of a single water vapor activation method and chemical pollution of a single phosphoric acid activation method are avoided. The process overcomes the shortcomings of traditional methods, saves energy and reduces emission, reduces production cost, and effectively realizes comprehensive utilization of wood vinegar liquid.

This invention belongs to the field of environmentally friendly functional new materials, and relates to a method for the targeted application of polymerized artificial soil in solid waste treatment facilities. It also includes a geopolymerizing agent comprising the following components: a compound coupling agent and an auxiliary matrix; the weight ratio of the compound coupling agent to the auxiliary matrix is ​​10-40:20-90; wherein the compound coupling agent comprises the following components: a geopolymerizing liquid and a compound coupling agent; the weight ratio of the geopolymerizing liquid to the compound coupling agent is 50-90:10-50. This invention optimizes and integrates geopolymerization solidification technology, coupling technology, and synergistic technology. By establishing a geopolymerization-coupling-synergistic treatment technology, it promotes the synergistic treatment of multi-source waste, compensates for the shortcomings of geopolymerization solidification technology, and realizes the resource utilization and zero emission of multi-source waste in various scenarios, both inside and outside landfills, and in municipal industrial parks.

The application relates to a preparation method of a defluorination agent prepared from eggshells and defatted bone powder, comprising the following steps: step one: waste animal bone pretreatment: removing meat and fat on the animal bone, drying and crushing to obtain powder F1, ready for use; step two: eggshell pretreatment: drying and crushing the eggshell to obtain powder F2, ready for use; step three: preparation of modified mixed powder: uniformly mixing the powder F1 and the powder F2 in a ratio of 1:(2.5-3), high-temperature calcining, adding a solvent to the high-temperature calcined solid mixture for hydrothermal treatment, filtering the hydrothermal treated product, washing, drying to obtain the modified mixed powder; and step four: preparation of a homogeneous emulsion type defluorination agent: dissolving the modified mixed powder in water to obtain the homogeneous emulsion type defluorination agent. The homogeneous emulsion defluorination agent prepared in the application does not add any organic matter, and has excellent defluorination effect and stability.

This invention discloses a method for producing high-quality nano-calcium carbonate from desulfurization ash, comprising the following steps: magnetic separation of the desulfurization ash; mixing the magnetically separated desulfurization ash with water to obtain a first desulfurization ash slurry; adding a mixed solution of sodium acetate and hydrochloric acid to the first desulfurization ash slurry, reacting to obtain a second desulfurization ash slurry with an acidic pH, and collecting the CO2 generated during the reaction; performing solid-liquid separation on the second desulfurization ash slurry to obtain the byproduct calcium sulfite and a mixed solution of calcium acetate and sodium chloride; adding sodium hydroxide to the mixed solution of calcium acetate and sodium chloride to adjust the pH to alkaline, and then performing solid-liquid separation to obtain metal hydroxide slag and a mixed solution of calcium acetate and sodium chloride; statically mixing the mixed solution of calcium acetate and sodium chloride with a sodium carbonate solution containing sodium tripolyphosphate using a peristaltic pump, and separating to obtain solid nano-calcium carbonate. This invention achieves the resource utilization of desulfurization ash and also prepares high-quality nano-calcium carbonate.

A device and method for selective reduction and stepwise smelting of limonite laterite nickel ore to produce nickel-cobalt alloy and molten iron belong to the field of mineral processing and metallurgical technology. The device includes a silo, a screw feeder, a multi-stage cyclone preheating and drying system, a flue gas dust removal system, a fluidized bed roasting main furnace heating system, a first cyclone separator, a fluidized bed reduction reactor, a second cyclone separator, a first electric furnace smelting reactor, and a second electric furnace smelting reactor. The method steps are as follows: limonite laterite nickel ore is placed in the silo; it is fed into the multi-stage cyclone preheating and drying system, preheated, and then enters the roasting main furnace for heating, dehydration, and decomposition to form dried material; after gas-solid separation, the solid material enters the reduction reactor, and the high-temperature flue gas is returned to the system for preheating and drying; nitrogen and reducing gas are introduced into the inlet of the reduction reactor respectively, forming reduced material that flows out from the outlet; the solid material after gas-solid separation enters the smelting reactor, and excess gas is burned for heating; the iron-rich slag is melted and reduced, and then discharged after smelting.