44 results about "Flash smelting" patented technology

A zero-carbon flash reduction ironmaking device comprises a reaction tower, the reaction tower is arranged upside down, a flash reduction area, an iron powder waste heat boiler and a green oxygen preheater are sequentially arranged in an inner cavity of the tower from top to bottom, oxyhydrogen powder entering the tower is subjected to oxyhydrogen combustion, mineral powder green hydrogen absorbs heat and is heated to the high temperature, and all hydrogen reduction reaction is completed before the mineral powder flows out of the flash reduction area. Iron powder is cooled through an iron powder waste heat boiler and a green oxygen preheater, hydrogen steam is cooled through a hydrogen steam waste heat boiler and a mineral powder preheater, and hydrogen water is separated through a cyclone dehydrator and a drying filter. The iron ore concentrate powder with the particle size smaller than 200 meshes falls into a powder bin, the reduction temperature ranges from 1100 DEG C to 1200 DEG C, the time for the ore powder to flow through a flash reduction area ranges from 2 s to 3 s, and the temperature for the ore powder to leave an iron powder waste heat boiler and the temperature for hydrogen steam to leave a hydrogen steam waste heat boiler range from 125 DEG C to 175 DEG C. The invention can be used for flash smelting of iron ore concentrate powder. The invention has the advantages of high waste heat recovery rate, long service life of the furnace lining, low energy consumption and zero carbon emission, and can avoid using the key management object coke ironmaking blast furnace device of the national two-high project.

The invention relates to the technical field of non-ferrous metal smelting, in particular to a method for predicting the iron content in copper flash smelting copper slag on line and model construction, starting from the actual incidence relation of copper slag and production input, model training-verification-testing is carried out through input data and output data of historical copper slag production, and the iron content in the copper flash smelting copper slag is predicted. And the input data of the copper flash smelting copper slag in a certain time period are obtained in real time and serve as model input to be substituted into the prediction model for on-line operation, the predicted value of the iron content in the copper slag discharged at the corresponding time point is obtained in real time, the problem that input data and output data of the prediction model constructed in the prior art are not matched is solved, and the prediction accuracy is improved. And online accurate prediction of the iron content in the copper flash smelting copper slag is realized.

The invention discloses an anode furnace flue gas treatment method and a treatment system thereof.The treatment method comprises the steps that copper concentrate is added into a flash smelting furnace to be smelted, and smelting furnace flue gas generated in the flash smelting furnace is sent to a waste heat boiler to be treated; the crude copper is added into an anode furnace to be subjected to oxidation reduction operation, oxidation process flue gas generated in the oxidation process is partially or completely conveyed to a salinization air pipeline of a waste heat boiler, and the rest of the oxidation process flue gas is conveyed to a flue gas desulfurization system to be treated; the flue gas in the oxidation process is conveyed to an inlet of a waste heat boiler through a salinization air pipeline and is uniformly mixed with the flue gas of the smelting furnace to obtain mixed flue gas, and then the mixed flue gas enters the waste heat boiler to be treated; and flue gas generated in the non-oxidation period in the anode furnace is conveyed to a flue gas desulfurization system to be treated. The flue gas generated by the anode furnace is introduced into the smelting boiler salinization air pipeline to be used as salinization air, recycling of the sulfur-containing flue gas is achieved, and the anode furnace flue gas treatment cost and the flue gas discharge amount of a desulfurization system are reduced.

In this flash furnace operation method, a bulk material containing sulfur and having an average particle diameter of 5 mm or more is introduced into a flash furnace.　

The application discloses a pyrite suspension flash smelting device and method. The device is a three-furnace structure smelting device, the middle part of which is a suspension oxidation smelting furnace, the left side of which is an SO2 flue and an SO2 flue gas gravity settling chamber, and the right side of which is a reduction smelting bath and a reduction flue gas gravity settling chamber above the reduction smelting bath; the device combines the suspension oxidation smelting and the bath reduction smelting, is connected by a channel between the two smelting baths, and has the characteristics of high energy utilization efficiency of a reactor and non-interference of oxidation and reduction of two reactors. The pyrite suspension flash oxidation smelting is carried out by using pure oxygen and preheated pyrite powder, the smelting efficiency of the pyrite powder is improved, no special fuel is needed, carbon dioxide emission is reduced, one-step pyrite iron smelting is realized, the utilization rate of iron resources is improved, and environmental pollution is reduced.

The utility model discloses a membrane type water-cooled wall flash ironmaking device, and belongs to the technical field of green low-carbon environment-friendly metallurgy. The device is a coal gasification flash ironmaking device, the lower part of the device is an elliptical or rectangular molten pool, the left upper part of the molten pool is a flash smelting furnace, the right upper part of the molten pool is a gravity settling chamber, and the flash smelting furnace, the molten pool and the gravity settling chamber are all provided with membrane water-cooled wall structures. According to the device provided by the utility model, the refractory material can be effectively protected, and the service life of the flash smelting furnace is prolonged; natural circulation of cooling water of the water-cooled wall of the iron-making furnace is realized, and power consumption is reduced; the membrane type water cooling wall structure protects the refractory material and produces steam at the same time, waste heat recovery of cooling water is achieved, and the dust content in ironmaking tail gas is greatly reduced.

The invention discloses a sulfonium making and gold catching method based on a flash smelting furnace, a system comprises a material taking machine, a quantitative feeding scale, a belt conveyor, a drying machine, a weightlessness scale, a scraper conveyor and the flash smelting furnace, and the method comprises the steps that the material taking machine conveys copper concentrate at the speed of 260-305 t / h, and meanwhile the quantitative feeding scale adds gold and silver ore at the speed of 6-30 t / h for mixing; drying the mixture to obtain mixed powder; and then the powder is metered and then enters a flash smelting furnace through a pneumatic chute for reaction, and generated copper matte is discharged from a discharge chute. The system realizes efficient recovery of gold and silver, and is simple in process flow and convenient to operate. According to the method, the gold and silver-containing ore is used as a cold material to be added into the flash smelting furnace, excessive heat in the furnace is absorbed to optimize heat balance, and a quartz flux is replaced to improve slag type control; the raw material adaptability is expanded; the precious metal recovery value is improved; the process creates a new profit growth point for a smelting enterprise while stabilizing the furnace condition, and has remarkable economic benefits and process advantages.

This invention relates to the field of smelting furnace technology, specifically to an online temperature monitoring device for the reaction tower of a flash smelting furnace in copper smelting. The device includes a reaction tower body composed of multiple layers of cylindrical shell and a copper water jacket. A nozzle is installed at the top of the reaction tower body. It also includes thermocouples arranged in a circumferential array on the cylindrical shell; a mounting frame installed on the cylindrical shell; a positioning component installed within the mounting frame; and a self-locking mechanism installed on one side of the positioning component. This invention utilizes multiple sets of thermocouples arranged in a circumferential array on the reaction tower, with a temperature monitoring point set every 45°. Temperature data is uploaded to a DCS system and collected by a process internet platform intelligent scheduling and optimization system. This allows for real-time observation of the temperature and trends within the flash smelting furnace reaction tower. Based on these temperature changes, the reaction status within the furnace is determined. The intelligent scheduling and optimization system, combined with current production parameters, provides feedback and suggestions for adjusting operating parameters to prevent material segregation.

The invention provides a method and device for synchronously recovering lead and zinc from lead-zinc oxide, and belongs to the field of metal production or refining, and the method comprises the following steps: providing a lead-zinc oxide powdery material; the lead-zinc oxide powdery material is fed into a reaction zone in a flash smelting furnace, CO plasma jet is applied to the lead-zinc oxide powdery material in the falling process of the lead-zinc oxide powdery material, and lead-zinc steam and lead-containing molten slag are obtained; obtaining a crude lead-zinc alloy; and the lead-containing molten slag falling into a molten pool area in the flash smelting furnace is smelted in the molten pool area in the flash smelting furnace, and liquid lead is obtained. According to the method, the lead-zinc oxide is treated through a flash smelting furnace smelting treatment + CO plasma jet technology, and efficient and synchronous recovery of lead and zinc in the lead-zinc oxide is achieved; wherein the lead recovery rate is gt; 96%; the zinc recovery rate is gt; 94%. And the method has the characteristics of short process flow, short time required by the whole process, cleanness and low consumption. The corresponding device is simple in structure, easy and convenient to operate and wide in application range.

The application discloses a method for comprehensively treating red mud and integrating with an alumina production process to realize step-by-step energy utilization, and belongs to the technical field of metallurgy and resource recycling. The method specifically comprises the following steps: oxygen, water vapor, coal powder and red mud powder are sprayed into a flash smelting furnace from a burner at the top of a coal gasification flash smelting furnace, high-temperature heat and high-reducing gas generated by coal gasification are utilized to directly smelt and reduce Fe2O3 in the red mud to produce molten iron, and after the red mud and the coal powder liquid slag are tempered, rock wool or other fiberized materials are directly produced, sodium oxide in the red mud is converted into sodium hydroxide for recycling and reuse; after smelting is completed, high-temperature coal gas waste heat is recovered to produce steam for use in an evaporation section of an alumina production process, coal gas is used in a roasting section of the alumina production process, and roasting tail gas is used for red mud drying. The application realizes integration of red mud treatment and the alumina production process and process reengineering, meets the energy needs of two process courses through clean and efficient step-by-step utilization of coal, realizes energy saving and emission reduction, and has no secondary pollution.

The invention relates to the field of lead flash smelting in pyrometallurgy, and discloses a flash lead smelting process matched with treatment of copper concentrate, which comprises the following steps: mixing copper concentrate and lead concentrate for flash smelting, and forming a lead-copper mixed melt after oxidation and reduction reaction; adding a vulcanizing agent to liquate and remove copper by utilizing the principle that the solubility of copper in the lead liquid is reduced along with the reduction of the temperature, so as to generate co-melt lead matte mainly comprising sulfides such as lead sulfide and copper sulfide; according to the process method, the mixed furnace charge containing 20-50% of lead and 0.5-5% of copper can be treated, a high-benefit lead matte product is directly produced in the flash lead smelting process, and a new benefit growth point is created for lead smelting enterprises.

The present application provides a kind of suspension side-blown electric heat smelting furnace and iron-based mineral smelting method.The suspension side-blown electric heat smelting furnace includes integrated suspension reaction tower and sedimentation tank, the top of suspension reaction tower has the entrance of to-be-smelted mineral material, and the top and / or side are also provided with a plurality of first spray guns, the first spray gun is independently connected with at least one of reducing agent supply unit, fuel supply unit or oxygen-containing gas supply unit, and suspension reaction tower is used for making to-be-smelted mineral material to carry out suspension smelting reaction;Sedimentation tank has horizontal structure, along the length direction of sedimentation tank, sedimentation tank includes side-blown area and electric heating area which are communicated, the top of side-blown area is directly communicated with the bottom of suspension reaction tower;Side wall of side-blown area is provided with a plurality of second spray guns, and electric heating area is provided with heating electrode.The present application solves the problems of energy quality imbalance, high iron content in slag and low reaction efficiency in the current flash smelting process.

The present invention relates to a furnace having an inner surface (2) comprising copper. The inner surface (2) comprises at least one steel insert (1), the at least one steel insert (1) creating a protrusion extending from the inner surface (2). The present invention also relates to a cooling element (17) for a furnace comprising at least one steel insert (1) creating a protrusion extending from the cooling element (17). The present invention also relates to a method for generating an autogenous protective layer on the inner surface (2) of a furnace and to the use of the furnace in a direct iron reduction process, electric smelting process, electric reduction process, flash smelting process, flash converting process, bath smelting process or bath converting process.

The application discloses a reverse and direct coupling flash smelting furnace and method, and belongs to the technical field of metallurgy. The furnace body comprises a direct flow reaction zone, a reverse flow reaction zone and a molten pool zone. Larger particle size furnace charges enter the reaction from the reverse flow reaction zone, and smaller particle size furnace charges enter the reaction from the direct flow reaction zone. Reducing gas is introduced from the upper part of the direct flow reaction zone, and after the gas reacts with fine particles in the direct flow downward, the gas enters the reverse flow reaction zone to exchange heat with coarse particles in the reverse flow, and finally tail gas is discharged from the upper part of the reverse flow reaction zone. Molten materials are separated into molten iron and slag layers in the bottom molten pool and discharged respectively. The method couples the reverse flow and the direct flow, integrates the advantages of the two smelting modes, avoids the shortcomings of the two smelting modes, effectively improves the metal yield and the overall energy efficiency, and reduces the raw material grinding cost and the tail gas heat loss.

The invention provides an enhanced coupling smelting and slag electromagnetic depletion method for a nickel-copper-containing multi-metal material, which comprises the following steps: pretreating a nickel-copper-based material, a flux, a reducing agent and an additive, and controlling the granularity and moisture; spraying the pretreated material into the furnace to carry out enhanced oxidation smelting of an alkaline slag system, so as to realize rapid melting, decomposition and slagging; the melt is subjected to deep strengthening oxygen-enriched smelting through a side blowing spray gun, and multi-metal nickel matte containing 5-10% of iron is obtained; and the molten slag is subjected to electromagnetic strengthening dilution, and valuable metals such as nickel and copper in the molten slag are recycled. By combining the enhanced oxidation smelting, the side-blown deep smelting and the electromagnetic depletion method, the problems that existing flash smelting raw materials are poor in adaptability, the side-blown smelting capacity scale is small, slag depletion is not thorough and the like can be solved, and the method has the advantages of being high in raw material adaptability, low in energy consumption, high in valuable metal recovery rate and the like; and efficient, green and low-carbon comprehensive utilization of complex low-grade nickel-copper-based resources can be realized.

The invention discloses a multi-flame monitoring system of a flash smelting furnace for processing metal sulfide concentrate and minerals, the system at least comprises a set of photoelectric probe, and the photoelectric probe comprises a visible light sensor, an infrared light sensor and a lens for capturing RGB (Red, Green, Blue) images; the S-shaped thermocouple is used for monitoring the furnace temperature; the gas analyzer is used for reading an oxygen signal; a protection and cooling system of the probe; the processing system and the control module are matched with distributed control, and the photoelectric probe, the S-shaped thermocouple for monitoring the furnace temperature, the gas analyzer for reading oxygen signals and the probe protecting and cooling system are all connected with the processing system and the control module. On-line and real-time production operation data are generated through RGB image and spectral analysis, S-type thermocouple temperature measurement, oxygen content analysis and collected furnace condition information for software processing, quality indexes of metallurgical reaction in the furnace are provided in combination with a comparison metallurgical model, the oxygen-material ratio and the oxygen-enriched concentration are suggested to be adjusted, and the production process is optimized and stabilized.

The present invention relates to a furnace comprising a wall having an inner surface (2) comprising a plurality of bricks (102) and / or compressible ramming mass (103) and a plurality of first steel inserts (104). The first steel inserts (104) are arranged between the bricks (102) and / or compressible ramming mass (103). The present invention also relates to a cooling element comprising a plurality of bricks (102) and / or compressible ramming mass (103), a plurality of first steel inserts (104), a method for generating an autogenous protective layer on an inner surface (2) of the furnace and to the use of the furnace in a direct iron reduction process, electric smelting process, electric reduction process, flash smelting process, flash converting process, bath smelting process or bath converting process is provided.

The present invention relates to the technical field of copper flash smelting matte grade prediction, and in particular to a method and model construction for online copper flash smelting matte grade prediction. Starting from the actual correlation between matte products and production inputs, the model is trained, verified and tested using input data and output data of historical matte production. Then, the copper flash smelting matte input data within a certain time period is acquired in real time and substituted into a prediction model as a model input for online calculation. The predicted value of the matte grade released at the corresponding time point is obtained in real time. This solves the problem of mismatch between input data and output data in the prediction model constructed in the prior art, and realizes accurate online prediction of the copper flash smelting matte grade.

The utility model discloses a flash smelting concentrate screening and crushing treatment device which comprises an obliquely-arranged material vibrating screen, a feeding belt is erected at the upper end of the material vibrating screen, a material bin is erected at the lower end of the material vibrating screen, a discharging belt is arranged below a discharging opening in the bottom end of the material bin, and the discharging belt is arranged below a discharging opening in the bottom end of the material bin. A material receiving and conveying unit is arranged at the discharging end of the material vibrating screen and comprises a temporary storage barrel used for receiving materials on the material vibrating screen, a bidirectional spiral conveyor transversely penetrates through the bottom end of the temporary storage barrel, crushers are arranged below discharging ports in the two ends of the spiral conveyor respectively, and the two crushers are connected with the temporary storage barrel. And a discharge port of the crusher is positioned above the blanking belt. The system is reasonable in structural design and compact in arrangement, quantitative conveying can be guaranteed, the failure rate of the crusher can be effectively reduced, secondary reshipment is not needed, the production efficiency is improved, meanwhile, the recovery effect of the system is improved, and the post operation environment is improved.

The invention provides a flash smelting device and a flash smelting method. The flash smelting device comprises a flash converting furnace, the flash converting furnace comprises a converting furnace body, a converting reaction tower and a converting flue, and the converting reaction tower and the converting flue are arranged on the converting furnace body; the flash smelting furnace comprises a smelting furnace body, a smelting reaction tower and a smelting flue, and the smelting reaction tower and the smelting flue are arranged on the smelting furnace body; the upper end part of the launder is communicated with the converting furnace body, the lower end part of the launder is communicated with the smelting furnace body, and converting slag in the converting furnace body can be introduced into the smelting furnace body through the launder. Therefore, the flash smelting device has the advantages that energy is saved, and the smelting efficiency can be improved.

The invention provides an intelligent prediction-based concentrate distribution control method in a flash furnace, which comprises the following steps of: acquiring the temperature and smoke concentration data of a reaction area in real time through a temperature sensor and a smoke online detector, and synchronously acquiring the supply flow of mineral aggregate, oxygen-enriched gas and air by a distributed control system. And the intelligent prediction module performs three-dimensional grid division and mathematical model iterative calculation based on the data, and outputs multi-physical quantity prediction results of a velocity field, a temperature field, a turbulence field and a particle distribution field. And the distributed control system comprehensively adjusts the flow parameters of the feeding controller and the gas controller according to the predicted data. And the display module displays prediction data in real time in a color grading form, and the data storage module records the corresponding relation between historical prediction and operation parameters, so that dynamic optimization control of the smelting process is realized. The control precision and the energy utilization efficiency of the flash smelting process can be improved, and dust emission and equipment loss are reduced.

This operating method for copper smelting is characterized in that it comprises: adding an S source to a matte generated by the reaction of a smelting feed containing a copper concentrate and a metal Cu-containing feedstock with a reaction gas in a reaction shaft of a flash smelting furnace when a metal phase of metal Cu is formed in the matte.

The invention belongs to the technical field of copper smelting, and particularly relates to a copper flash smelting control method, which comprises the following steps of: calculating process indexes in a burdening list adjustment stage, ensuring that each burdening meets key process indexes such as heat balance and flue gas balance, finely adjusting the process indexes according to the components of dry concentrate in a furnace during actual production, and controlling the smelting speed of the copper. And furnace condition fluctuation can be effectively reduced, and smelting stability is guaranteed. Material storage information is accessed in the production stage, and batching list calculation can be performed in advance according to the stock of materials, so that continuous production is ensured. The material storage information is accessed in the batching list adjustment stage, material execution can be guaranteed while reasonable batching is performed, storage management and batching list adjustment are combined, and the reliability of decision making is improved.

The application provides a double-flash copper smelting intermediate material processing system and process, which comprises a coarse crushing device for coarsely crushing the intermediate material generated by double-flash copper smelting and a fine crushing device for finely crushing the coarsely crushed intermediate material, the fine crushing device is connected with the discharge end of the coarse crushing device, and the intermediate material processing system further comprises at least two transmission devices, the two transmission devices are connected with each other, and the two transmission devices are respectively connected with the discharge end of the fine crushing device and the settling tank of a flash smelting furnace. The coarse crushing device and the fine crushing device are combined, the step of grinding the intermediate material in the prior art is reduced under the premise of reducing the equipment cost and the maintenance cost, and the cost of the overall process is further reduced.

The application discloses a method for realizing iron circulation and copper reinforced recovery in a one-step copper smelting process of low-iron copper concentrate, which comprises the following steps: directly pouring smelting slag produced by mixing low-iron copper concentrate with iron ore powder and smelting by a one-step copper smelting method into a reduction smelting furnace, adding appropriate amount of reducing agent blocks and slagging agents, forming copper-iron alloy after reduction and purification, and naturally separating and settling the copper-iron alloy in the furnace, returning the obtained copper-containing molten iron at the lower layer to a flash smelting furnace for reuse, and directly selling the upper layer molten slag after water quenching as tailing slag. The application returns the copper-containing molten iron at the lower layer to the furnace, solves the problem that the copper-iron alloy is difficult to apply, replaces part of iron-containing raw materials for slagging, realizes iron circulation, returns the molten liquid directly, avoids heat loss as much as possible, indirectly saves energy consumption, and makes the melts more easily contact, which is beneficial to smelting and slagging reactions.

The utility model discloses a radiation chamber inlet portion water cooling wall structure of a flash smelting waste heat boiler, which comprises a radiation chamber inlet portion water cooling wall composed of a tube plate type water cooling wall, and the tube plate type water cooling wall is composed of a steel plate and a plurality of heat exchange tubes laid on the outer side face of the steel plate. An anti-abrasion plate blocked in front of the first heat exchange tube at an inlet is arranged at the inlet of the radiation chamber inlet water cooling wall, the inner side face of a steel plate of the tube plate type water cooling wall forms a counter-fire face of the inner side of the radiation chamber inlet water cooling wall, and the counter-fire face of the radiation chamber inlet water cooling wall is a smooth surface. A nichrome film layer and a refractory material layer are sequentially arranged on the counter-fire surface of the water-cooled wall at the inlet part of the radiation chamber in the direction in the boiler, and a refractory material layer is also arranged on the outer side surface of the water-cooled wall at the inlet part of the radiation chamber in the waste heat boiler inlet expansion joint. The utility model has the advantage of long service life.

The invention discloses a method for comprehensive treatment of red mud and gradient utilization of energy by fusing with an aluminum oxide production process, and belongs to the technical field of metallurgy and resource recycling. The method specifically comprises the following steps: spraying oxygen and water vapor, pulverized coal and red mud powder into a flash furnace from a burner at the top of a coal gasification flash smelting furnace, directly smelting and reducing Fe2O3 in the red mud to produce molten iron by utilizing high-temperature heat and high-reducing gas generated by gasification of the pulverized coal, and directly producing rock wool or other fibrous materials after tempering the red mud and pulverized coal liquid slag, sodium oxide in the red mud is converted into sodium hydroxide to be recycled; after smelting is completed, waste heat of high-temperature coal gas is recycled to produce steam which is used for an aluminum oxide production evaporation section, coal gas is used for an aluminum oxide production roasting section, and roasting tail gas is used for drying red mud. Red mud treatment and aluminum oxide production process fusion and process reconstruction are realized, energy requirements of the two processes are met through clean and efficient gradient utilization of coal, and energy conservation, emission reduction and no secondary pollution are realized.

The article of the present design is a position measuring device for an auxiliary burner. The position measuring device is used to adjust the position of an auxiliary burner installed in a concentrate burner of a flash smelting furnace. As shown in Reference Figure 1 of the usage state, the position measuring device 10 is inserted through the inspection hatch 21 of the concentrate burner 20, and the auxiliary burner 22 is fitted into the U-shaped part at the tip. The auxiliary burner 22 is positioned so that the position measuring device 10 is aligned with the reference groove 23 formed on the underside of the inspection hatch 21. Furthermore, as shown in Reference Figure 2 of the usage state, the scale on the position measuring device 10 is read using the edge of the opening of the inspection hatch 21 as a reference, and the position of the auxiliary burner 22 is adjusted based on the measurement result.

To mitigate the risk of increasing the proportion of recycled raw materials in the main metal component. In a flash smelting furnace in which the high-temperature melt generated by reacting raw materials with oxygen in the reaction tower (2) is separated on the hearth of the settling tank (3) into a matte layer (3a) containing a sulfide of a given metal, i.e., matte, and a slag layer (3b) existing on the matte layer, the furnace is equipped with: a given ramp region (S2) provided on the hearth (S) to guide the molten metal of the given metal, which remains in the lower part of the matte layer without sulfidation, toward one side of the furnace wall (3W) of the settling tank; and metal discharge ports (Hc, Hc) formed on the furnace wall to extract the molten metal accumulated at the bottom of the ramp region out of the furnace.

A magnetic control green hydrogen flash reduction magnetite smelting device comprises a magnetic controller, a powder bin is arranged outside an inner cavity of a reaction tower, a round pipe at the bottom of the powder bin penetrates through a round hole in the center of a ball bearing neck bush of the magnetic controller, the magnetic controller comprises a plurality of sector-ring-shaped permanent magnets, the permanent magnets are distributed on a supporting disc in an annular array mode, and the intervals between every two adjacent permanent magnets are the same. The speed reduction motor drives the permanent magnet to rotate at a constant speed, magnetite concentrate powder falling into the powder bin and with the particle size smaller than 200 meshes is driven to rotate at a constant speed around the central axis of a round pipe at the bottom of the powder bin, the space stroke of the ore powder 1.0 m away from the bottom face of the permanent magnet in an inner cavity of the tower is prolonged, and the smelting temperature ranges from 1100 DEG C to 1200 DEG C. The invention can be used for flash smelting of magnetite concentrate powder. High-strength smelting is achieved, the green hydrogen utilization rate exceeds 90%, the energy efficiency and carbon efficiency index is advanced, and a coke smelting blast furnace device which is a key management object of a national two-high project can be avoided.