70 results about "Iron ore sintering" patented technology

The invention relates to the field of iron ore sintering production process prediction and control, in particular to a multi-model fusion sintering end point temperature prediction method. The method comprises the following steps: firstly, performing Spearman level correlation analysis on currently obtained cleaned data, and extracting strong and weak characteristics of the correlation; secondly, clustering the time series data by using a fuzzy C-means clustering algorithm, and dividing the data into different categories; and for each clustering category, respectively constructing a long-short-term memory network for training, and forming a plurality of prediction models based on different data features. And finally, fusing the prediction results of the plurality of LSTMs in a fuzzy membership weighting mode by using the time sequence data of each air bellow, so as to obtain a final sintering end point temperature prediction value. According to the method, through organic fusion of multiple models, high-accuracy and high-robustness result prediction is realized, managers and workers are helped to accurately grasp the production condition, the sintering result is maintained to be stable, and the production efficiency and economic benefits of enterprises are improved.

An electric hot plate lifting type iron ore sintering zero-carbon ignition heat preservation device comprises a sintering trolley and an ignition device located above the sintering trolley on the upstream of a sintering machine. The ignition device comprises an ignition heat preservation furnace and a lifting type electric heating plate device arranged on the ignition heat preservation furnace. And the ignition holding furnace is arranged above the sintering pallet. The lifting type electric hot plate device comprises a lifter, a power transmission bearing rod, a resistance hot plate and a lifting motor. The lifter is installed on the upper portion of the furnace top of the ignition holding furnace. And the power transmission bearing rod is arranged on the lifter and penetrates through the lifter and the furnace top of the ignition holding furnace. And the resistance hot plate is arranged above the sintering pallet and is connected with the lower end of the power transmission bearing rod. The lifting motor is connected with the lifter and drives the electricity transmission force bearing rod through the lifter to drive the resistance hot plate to move up and down. According to the utility model, electric heating ignition is adopted, clean and green zero-carbon ignition is realized, the carbon emission is obviously reduced compared with the prior art, the ignition is uniform, and the service life of the furnace lining of the ignition furnace is effectively prolonged.

The present application relates to a kind of methods for improving iron ore sinter low temperature reduction pulverization index, belong to iron ore sinter processing technical field.The method includes: collecting finished iron ore sinter as target sample, obtaining the initial sinter low temperature reduction pulverization index of target sample, original chemical composition and its proportion;Hyperbolic space of sinter low temperature reduction pulverization index is constructed, and coarse proportioning matrix is calculated;According to coarse proportioning matrix, multi-dimensional variable solution group is calculated using genetic algorithm;According to preset gradient quantity, the optimal solution under each temperature gradient interval is filtered in multi-dimensional variable solution group, and temperature gradient solution group is generated comprehensively;According to temperature gradient solution group, the optimal sintering material proportioning scheme and the combination of optimal parameters under each temperature gradient interval are calculated, and the optimal sintering material proportioning scheme and the combination of optimal parameters are applied in low temperature reduction pulverization process.The present application improves control precision, and improves the improvement effect of iron ore sinter low temperature reduction pulverization index.

According to the matching method of the coarse-grained flux-type steel slag magnetic separation tailings in iron ore sintering, the flux-type steel slag magnetic separation tailings are innovatively mixed and screened to obtain the coarse-grained flux-type steel slag magnetic separation tailings, and the coarse-grained flux-type steel slag magnetic separation tailings are used for iron ore sintering production, so that the composition fluctuation is reduced, and the production efficiency is improved. The granulating effect of the steel slag raw material is improved. A high-alkalinity sintering raw material is further obtained through burdening calculation, and combined control over the content of MgO, the use amount of solid fuel, the water content of a sintering mixture, the use amount of a sintering grate-layer material, the height of a sintering material layer and the rotating speed of a sintering exhaust fan is matched, so that the problem that the coarse-fraction flux type steel slag magnetic separation tailings are used for iron ore production is successfully solved; and the sintering effect is enhanced, and the sintered ore yield and the drum strength are improved. The granulation effect of the sintering raw material is very good, the sintering effect is improved, the yield reaches 79.80%, the drum strength of the sintered ore reaches 66.53%, and the FeO content reaches 8.77%.

The invention discloses a device and a method for sintering and grinding limonite into pellet fine powder and removing crystal water, the device comprises a vertical mill, tuyere rings are arranged around a millstone of the vertical mill, a powder concentrator is arranged above the millstone, a blanking hopper is arranged on the lower side of the powder concentrator, a blanking pipe is arranged in the center of the blanking hopper, and the vertical mill is provided with a coarse powder outlet and a returned material inlet. The blanking hopper is connected with a coarse powder transfer device through a coarse powder outlet, the coarse powder transfer device is connected with an air inlet of the roasting furnace, an air outlet of the roasting furnace is connected with a flue gas inlet, a discharge port of the roasting furnace is connected with a return material inlet through a roasting return material device, and the return material inlet is connected with a blanking pipe. According to the method, the limonite sintering powder with the large particle size is ground into the pellet fine powder through the vertical grinding machine, free water in the limonite sintering powder is removed while the pellet fine powder is ground, part or even all of crystal water in the limonite can be removed with the high heat utilization rate, and the yield of the pellet fine powder is improved. And the adverse effect caused by crystal water release in the pellet roasting process is reduced.

The invention relates to the field of iron ore sintering production process prediction and control, in particular to a Bayesian neural network-based sintering condition prediction method, which comprises the following steps of: firstly, performing random forest extraction on importance characteristics by using currently obtained cleaned data; then, the sintering condition is divided according to the obtained position of the sintering end point, and the time series data are clustered through a fuzzy C-means clustering algorithm; and finally, training the data of different clusters by using a Bayesian neural network, and weighting the membership degree by using the obtained time sequence data of each air bellow so as to obtain a prediction result of the sintering working condition. According to the method, high-accuracy and high-robustness result prediction can be realized, so that managers and workers can understand the production condition more deeply, the stability of the sintering result is maintained, and the efficiency and income of enterprises are improved.

The invention discloses a moisture control method and device for a sintering mixture, a storage medium and a mixing system, and relates to the technical field of iron ore sintering. The moisture control method for the sintering mixture comprises the steps that in the process that a material belt conveys materials to a mixing machine, the feeding belt is detected through a belt weigher to obtain the material flow; determining a first water adding amount of the water adding pipe according to the material flow; detecting the flow of the water adding pipe to obtain the second water adding amount of the water adding pipe; and controlling the water adding amount of the water adding pipe according to the first water adding amount and the second water adding amount. The water adding accuracy of the mixing system is guaranteed, and then the moisture stability of the mixture output by the mixing system is guaranteed.

The invention relates to a method for improving the low-temperature reduction degradation index of iron ore sinter, and belongs to the technical field of iron ore sinter processing. The method comprises the following steps: collecting finished iron ore sinter as a target sample, and obtaining initial sinter low-temperature reduction degradation indexes, original chemical components and proportions thereof of the target sample; constructing a hyperbolic space of sintering ore low-temperature reduction degradation indexes, and calculating a coarse matching matrix; calculating a multi-dimensional variable solution group by adopting a genetic algorithm according to the rough matching matrix; screening an optimal solution in each temperature gradient interval from the multi-dimensional variable solution group according to a preset gradient number, and comprehensively generating a temperature gradient solution group; and calculating the combination of the optimal sintering material proportioning scheme and the optimal parameters in each temperature gradient interval according to the temperature gradient solution, and applying the combination of the optimal sintering material proportioning scheme and the optimal parameters to the low-temperature reduction degradation process. According to the method, the control precision is improved, and the improvement effect of the low-temperature reduction degradation index of the iron ore sinter is improved.

The application discloses an on-line monitoring method for air leakage rate of an iron ore sintering system, which comprises the following steps: 1) adjusting sintering production parameters so that the sintering production state is stable, and obtaining sintering process working condition parameters in the stable state; 2) calculating working condition flue gas flow of a sintering main exhaust fan; 3) converting the working condition flue gas flow of the sintering main exhaust fan into standard condition flue gas flow; and 4) calculating actual sintering air volume through the sintering main exhaust fan, comparing the actual sintering air volume with theoretical sintering air volume of sintering materials in normal production, and obtaining total air leakage rate of a sintering-dedusting system. The sintering process working condition parameters in the stable production state are obtained in real time by using a sintering central control system, the working condition and standard condition flue gas flow of the sintering main exhaust fan are automatically calculated by deducting water vapor, the total air leakage rate of the sintering system including the sintering and dedusting processes is obtained in real time by comparison with the theoretical sintering air volume of the sintering materials in the normal production, and the purpose of conveniently and quickly monitoring the sintering air leakage rate in real time is achieved.

The device comprises a vertical mill, the vertical mill comprises a millstone, a tuyere ring is arranged around the millstone, the tuyere ring is provided with a flue gas inlet, a powder concentrator is arranged above the millstone, a flue gas outlet is formed in the upper side of the powder concentrator, a blanking hopper is arranged on the lower side of the powder concentrator, and a blanking pipe is arranged in the center of the blanking hopper. The vertical mill is provided with a coarse powder outlet, the material returning inlet and the blanking hopper are connected with the coarse powder outlet, the coarse powder outlet is connected with a feeding port of the suspension heat exchange device through the first reshipment device, and an air inlet of the suspension heat exchange device is connected with the hot blast stove. A discharge port of the suspension heat exchange device is connected with a return inlet of the vertical mill through a second transfer device, an air outlet of the suspension heat exchange device is connected with a flue gas inlet of the tuyere ring, the device can remove free water and crystal water in sintered powder while grinding pellet fine powder, magnetization is achieved in the grinding process, a closed loop of heat utilization is achieved, and the service life of the vertical mill is prolonged. The generation efficiency is improved; and the energy consumption is reduced.

The application discloses an iron ore sintering fuel particle size identification control system, which comprises an image acquisition unit arranged above the end of a belt at a position behind a crusher and used for acquiring image data of finished products after crushing; a server used for acquiring the image data of the image acquisition unit; and an industrial computer used for acquiring transmission data of the server, calculating a prediction result of roller spacing of the crusher, and issuing an instruction for adjusting the roller spacing of the crusher. The application further discloses an iron ore sintering fuel particle size identification control method. The application improves the automatic control level of fuel particle size, achieves the purposes of stabilizing sintering fuel particle size, reducing labor intensity, and improving the automatic and intelligent level, thereby supporting stable and smooth sintering production.

The utility model relates to the technical field of iron ore sintering equipment, and discloses an efficient iron ore sintering blowing carbon reduction device which comprises a heat insulation box, the top end of the outer wall of the heat insulation box is communicated with a heat exchange box, the top end of the inner wall of the heat insulation box is fixedly connected with a heat-resisting hole plate, and the bottom end of the heat-resisting hole plate is communicated with a plurality of natural gas nozzles. The left side of the heat-resisting hole plate penetrates through the heat insulation box and communicates with a connector pipe, hole partition plates are fixedly connected to the upper side and the lower side of the inner wall of the heat exchange box correspondingly, the adjacent sides of the two hole partition plates communicate with a plurality of cylinders, and the right side of the heat exchange box communicates with a steam pipe. According to the utility model, a natural gas pipeline is connected through the connector pipe, smoke generated by combustion passes through the hole partition plate and the cylinder, heat is transferred to purified water, the purified water is converted into water vapor, the water vapor is sprayed out through the steam nozzle, the blower is started to introduce air, and oxygen is increased, so that the replacement rate of solid fuel is improved, and the emission of carbon monoxide is reduced.

The application discloses a method for producing low-metamorphic coal into semi-coke for iron ore sintering, which comprises the following steps: washing low-metamorphic coal to obtain raw materials, and performing coal pyrolysis on the raw materials to obtain semi-coke particles, and screening semi-coke particles with a particle size of 12-15 mm for high sintering. The semi-coke produced by the method has an optimized microstructure and element composition, and its combustion performance and calorific value are closer to those of coke powder for sintering, so that the vertical sintering speed is basically unchanged before and after the process of replacing coke powder with semi-coke in a high proportion, thereby ensuring the performance of sintered ore, and the amount of nitrogen oxides generated is obviously reduced.

The utility model discloses a side suction dust removal device of an iron ore sintering system, which comprises a transverse pipe with two blocked ends, and a gas inlet pipe and a gas outlet pipe which are respectively arranged at the two ends of the transverse pipe, the transverse pipe comprises a pre-dust removal section and a re-dust removal section which are sequentially communicated along the flow direction of flue gas, and a plurality of upper baffles and lower baffles are alternately arranged in the pre-dust removal section along the flow direction of the flue gas. The upper baffle and the lower baffle are located on the upper portion and the lower portion of the pre-dedusting section respectively, a plurality of filter screens are arranged in the re-dedusting section in the smoke flowing direction, a dust collecting box is arranged below the re-dedusting section, a plurality of air cylinders are installed at the bottom of the dust collecting box, and piston rods of the air cylinders extend into the dust collecting box and then are connected with connecting rods. A blanking hole is formed in the bottom of the re-dedusting section below each filter screen, the upper end of a connecting rod penetrates through the blanking hole and then is connected with the corresponding filter screen, and rotary dedusting brushes are symmetrically arranged in the dust collection box on the two sides of the connecting rod. In conclusion, the utility model has the advantages that the filter screen is not easy to block, the dust cleaning effect is good, and long-term normal operation can be realized.

The invention relates to the field of iron ore sintering, and discloses a stepped flue gas waste heat deep recycling system for the iron ore sintering process, which comprises an iron ore sintering system, a first-stage solid particle power generation system, a second-stage plate heat exchanger power generation system, a third-stage organic Rankine cycle power generation system and a fourth-stage plate heat exchanger heat exchange system, the invention further discloses a novel bubbling heat exchange plate structural design. The structure synergistically strengthens turbulence and heat exchange area on microcosmic and macroscopic scales, so that the heat exchanger still keeps extremely high heat transfer efficiency under the working condition of low temperature difference, and waste heat is recycled to the maximum extent.

A large pendulum bob type iron ore sintering zero-carbon ignition heat preservation device comprises a sintering trolley, an ignition heat preservation furnace and a large pendulum bob type electric heating device. And the ignition holding furnace is arranged above the sintering pallet at the upstream of the sintering machine. The large pendulum bob type electric heating device comprises a swinging shaft, a swinging ring, a swinging arm, a self-rotating shaft, a self-rotating body and an electric heating piece. Wherein the swing shaft is arranged on the furnace top of the ignition holding furnace. The swing ring and the swing shaft are coaxially installed. The upper end of the swinging arm is connected with the swinging ring; the rotation shaft and the swing shaft are arranged in parallel, and the rotation body and the rotation shaft are coaxially installed. And the electric heating sheet is arranged on the autorotation body. And the swinging ring drives the swinging arm to perform reciprocating swinging in a vertical plane above the sintering trolley around the swinging shaft. The electric heating piece rotates around the rotation shaft along with the rotation body. The large pendulum bob type electric heating device is used for achieving electric heating ignition of a sintering material surface, carbon emission is obviously reduced compared with the prior art, ignition is even, and the service life of a furnace lining of the ignition furnace is effectively prolonged.

The invention relates to the field of ferrous metallurgy, in particular to a novel low-melting-point additive suitable for high-aluminum iron ore and a sintering method of the novel low-melting-point additive. The low-melting-point additive used in the invention is mature in preparation process, environment-friendly, low in preparation cost, free of extra equipment investment, low in addition proportion in the sintering process, free of increasing the production cost of the sintering procedure, wide in industrialization prospect, capable of being applied to iron ore resources such as high-aluminum iron ore and low-silicon iron ore, and suitable for industrial production. And the sintering temperature in the sintering process is obviously reduced. The method is different from a conventional low-carbon sintering process, high-aluminum iron ore low-carbon sintering can be achieved under the ultrahigh alkalinity, the method conforms to the structure that the high-aluminum iron ore is applied to the blast furnace slag in a full-proportion mode, meanwhile, the high-aluminum iron ore sintering product quality index is remarkably improved, and the carbon emission is greatly reduced.

The present invention relates to a method for preparing sintering fuel from carbon-containing wastes, comprising the following steps: 1) the water content of coking wastewater sludge does not exceed 5%, the water content of tar residue does not exceed 10%, the tar residue is heated to be completely liquefied, and the coke powder is ground to less than 200 meshes; 2) the coke powder is mixed with coking wastewater sludge, the tar residue is sprayed, and then the coke coal, coke powder, coking wastewater sludge, and tar residue are kneaded into a paste, and granular waste resin is added, and the material is extruded into flat agglomerates with a particle size of 10 mm to 20 mm; 3) the agglomerates are dried until the water content does not exceed 2%; 4) the agglomerates are calcined and carbonized in an anaerobic environment, the porosity of the carbonized agglomerates is ≥50%, and the bulk density is 1.0 to 2.5 g / cm 3 , and the compressive strength is ≥10 MPa; 5) the carbonized agglomerates replace part of the iron ore sintering fuel to participate in sintering production, or replace the pulverized coal for blast furnace injection as the injection fuel. The present invention realizes the high-value utilization of carbon-containing wastes in the coking process, reduces the discharge of solid wastes that cannot be treated at the same time, and reduces the CO2 emissions caused by the direct incineration of carbon-containing wastes.

The present invention discloses an evaluation method for iron ore sintering ore blending scheme based on comprehensive sintering bonding index. The evaluation method for iron ore sintering ore blending scheme based on comprehensive sintering bonding index includes the following steps: measuring the particle size composition of single ore, respectively measuring the bonded index and the bonding index of the coarse and fine particle sizes of single ore, calculating the sintering bonding index of the ore blending scheme, and optimizing the ore blending scheme. This method has a simple test process, high reliability of calculation results, can quickly obtain the sintering comprehensive bonding index under different ore blending schemes, and guides the ore blending in sintering production.

The invention discloses a method for preparing stainless steel dust ash sintered ore, and relates to the technical field of iron ore sintering. The method comprises the steps of digestion and wetting, batching, mixing and granulation, sintering and cooling. When wetting, water is added to the stainless steel dust ash in an anti-leakage tank at a ratio of 3:1, and the calcium oxide is digested and mixed until the water content is within 15%. The batching is mainly 80% of the stainless steel dust ash, and the stainless steel dust ash originally treated as waste is transformed into treasure by combining with iron concentrate, sintering return ore, etc., and is re-incorporated into the production circulation system, thereby greatly improving the recycling rate of internal resources of steel enterprises and reducing dependence on external primary resources such as iron concentrate. The stainless steel dust ash sintered ore has significant advantages, and the iron material is taken from the dust ash produced by the steel enterprise itself. Compared with conventional iron concentrate sintering production, the concentrate consumption cost can be reduced by about 360 yuan / t, and the comprehensive cost of sintered ore can be reduced by 280 yuan / t.

The invention discloses an iron ore sintering, ore blending and screening device, which belongs to the technical field of iron ore sintering, and comprises a support frame, a plurality of inclined mine sieves are mounted on the support frame, the plurality of mine sieves are different in height, sieve pores in the mine sieves with different heights are sequentially reduced from high to low, and the mine sieves are obliquely distributed. The screening device further comprises an inclined first material guide plate, the first material guide plate is located below the mining sieves, an inclined second material guide plate is arranged between every two adjacent mining sieves, and the second material guide plates are connected with the supporting frame in a sliding mode. According to the screening device, sliding-in and pulling-out of the second guide plates of all the layers are accurately controlled through the transfer assembly, so that the screening path of the materials is dynamically changed, an operator can select to stop screening of the materials at a certain layer and collect the materials through program control according to actual particle size distribution or process requirements of the materials, and the screening efficiency is improved. By means of the flexibility, the adaptability to raw materials with different formulas and particle size characteristics is greatly enhanced.

The invention discloses an optimized ore blending method based on the consolidation capacity of coarse-particle iron ore, which comprises the following steps of: 1) taking a scheme before adjustment as a reference ore blending scheme, and taking a scheme after adjustment as an ore blending scheme to be adjusted; 2) according to the raw material structure of the reference ore blending scheme, carrying out iron ore consolidation capacity determination on the coarse particle iron ore in the scheme, and respectively measuring the consolidation strength and pulverization rate of each variety of coarse particle iron ore; determining the iron ore consolidation capacity of the coarse particle iron ore in the scheme according to the raw material structure of the to-be-adjusted ore blending scheme, and respectively measuring the consolidation strength and pulverization rate of the coarse particle iron ore of each variety; and 3) calculating the mass fraction Q core of the core ore in the uniformly mixed material in each scheme, and calculating the content Ai of the raw material in the core ore in each scheme. The method is simple in operation process, high in practicability and capable of adapting to diversified raw material structures, a rapid and accurate iron ore sintering performance evaluation and ore blending structure optimization method can be established for enterprises, and reasonable utilization of resources is realized.

This invention belongs to the field of iron ore sintering technology and discloses a method for strengthening the sintering of high-ratio specular hematite. S1. Raw material pretreatment: Returned ore and dried limonite are sieved using a 0.25mm sieve. Returned ore and limonite with a particle size smaller than 0.25mm are mixed with specular hematite powder and then pretreated by high-pressure roller milling. S2. Mixing and granulation: The mixture is mixed with returned ore and limonite larger than 0.25mm, other iron-containing minerals, flux, and fuel, and then granulated. S3. Pre-oxidation: The granulated mixture is distributed, and after distribution, the material layer is pre-oxidized using hot air. S4. Sintering: The mixture undergoes ignition, sintering, crushing, and cooling sequentially to produce the finished sintered ore. This invention effectively improves the proportion of specular hematite, significantly reduces sintering energy consumption, and increases the strength of the sintered ore.

The application discloses a kind of sintered iron ore core particle high-temperature ore-forming characteristics detection method, belong to iron ore sintering technical field.The method is after CaO digestion and mixed with Fe2O3 Form calcium-iron mixed sample, while natural iron ore particles are processed into straight cylinder to obtain iron ore core particle sample and measure its cross-sectional area S1;Iron ore core particle sample is vertically placed in calcium-iron mixed sample inside directly below and is pressed into shape to obtain briquette sample;Sintering is carried out to briquette sample, the obtained sintered briquette is polished with sandpaper until the residual iron ore core particle is exposed and its cross section S2 is measured;According to S1 and S2, the core particle liquid phase transformation fraction (LPTF) is calculated to measure the high-temperature ore-forming performance of iron ore core particle;The method can evaluate the quality and performance of iron ore by detecting the dissolution degree of iron ore core particle in liquid phase during sintering ore-forming process, and can quantify the dissolution characteristics of iron ore core particle, more directly and accurately reflect the dissolution assimilation degree of iron ore core particle in sintering liquid phase.

The invention discloses a low-carbon low-emission solid fuel for iron ore sintering and a preparation method and application thereof, and belongs to the technical field of iron ore sintering fuels. The low-carbon low-emission type solid fuel comprises fine-fraction coal-based fuel, an iron-containing material, high-cellulose biomass powder and auxiliary catalysts (vanadium-titanium minerals and nickel-containing minerals), the fine-fraction coal-based fuel which is difficult to recycle is adopted as a main raw material, other auxiliary raw materials are added, and vacuum extrusion forming is carried out to obtain the modified solid fuel. The combustion performance can be obviously improved, so that the material layer heat distribution state in the sintering process is optimized, the sintered mineral product quality index is improved, meanwhile, generation of NOx is restrained, and low-carbon low-emission sintering clean production is achieved from the source.

The application discloses an electric heating plate lifting type iron ore sintering zero-carbon ignition heat preservation device, which comprises a sintering trolley and an ignition device arranged above the sintering trolley at the upstream of a sintering machine. The ignition device comprises an ignition heat preservation furnace and a lifting type electric heating plate device arranged on the ignition heat preservation furnace. The ignition heat preservation furnace is arranged above the sintering trolley. The lifting type electric heating plate device comprises a lifter, a power transmission load bearing rod, an electric resistance heating plate and a lifting motor. The lifter is installed on the upper portion of the furnace top of the ignition heat preservation furnace. The power transmission load bearing rod is arranged on the lifter and penetrates through the lifter and the furnace top of the ignition heat preservation furnace. The electric resistance heating plate is arranged above the sintering trolley and is connected with the lower end of the power transmission load bearing rod. The lifting motor is connected with the lifter and drives the power transmission load bearing rod to drive the electric resistance heating plate to move up and down through the lifter. The electric heating ignition is adopted, clean and green zero-carbon ignition is realized, carbon emission is obviously reduced compared with the prior art, ignition is uniform, and the service life of the ignition furnace lining is effectively prolonged.

A direct current discharge type iron ore sintering zero-carbon ignition heat preservation device comprises a sintering trolley, an ignition heat preservation furnace arranged above the sintering trolley and a lifting type two-phase direct current discharge electrode. The lifting type two-phase direct-current discharge electrode comprises a power supply bearing plate, a top electrode, a lifting motor and a bottom electrode. Wherein the power supply bearing plate is arranged at the upper part of the furnace top of the ignition holding furnace. The top electrode is arranged on the power supply bearing plate and penetrates through the power supply bearing plate and the furnace top of the ignition holding furnace. The lifting motor is connected with the power supply bearing plate and drives the top electrode to move up and down through the power supply bearing plate. The bottom electrode is arranged on the sintering trolley, and the arrangement position of the bottom electrode in the width direction of the sintering trolley corresponds to the arrangement position of the top electrode on the ignition holding furnace. The lifting type two-phase direct-current discharge electrode is used for achieving electric heating ignition on a sintering material surface, carbon emission is obviously reduced compared with the prior art, ignition is even, and the service life of a furnace lining of the ignition furnace is effectively prolonged.

The iron ore sintering ignition method based on the blast furnace hot air comprises the steps that an air inducing pipe is arranged between a hot blast stove and a sintering machine, high-grade oxygen-enriched hot air obtained after a blast furnace blast heating task is completed in the hot blast stove is induced, and the high-grade oxygen-enriched hot air is conveyed to an ignition section of the sintering machine through the air inducing pipe; the temperature of the hot air is adjusted to the target ignition temperature in an air mixing mode; through segregation material distribution, the proportion of the solid fuel in the thickness range of 30-80 mm on the surface layer of the sintering mixture is increased by 2-3% compared with the average fuel proportion of a material layer; and the hot air after temperature regulation passes through a nozzle on an ignition cover of the sintering machine. The high-temperature oxygen-enriched hot air of the blast furnace hot blast stove is directly utilized, gas combustion is completely abandoned, the Boudol reaction caused by oxygen consumption and high-concentration CO2 generation due to gas combustion is fundamentally eliminated, solid fuel can be sufficiently combusted in the oxygen-enriched atmosphere, and the utilization rate is remarkably increased.

A ferris wheel type iron ore sintering zero-carbon ignition heat preservation device comprises a sintering trolley, an ignition heat preservation furnace and a ferris wheel type electric heating device. And the ignition holding furnace is arranged above the sintering pallet. The sky wheel type electric heating device comprises a revolution shaft, a revolution ring, a rotation arm, a rotation shaft, a rotation body and an electric heating piece. The revolution shaft is arranged on the furnace top of the ignition holding furnace. And the revolution ring and the revolution shaft are coaxially mounted. The revolution ring is connected with a plurality of rotating arms, and the rotating arms are evenly distributed in the circumferential direction of the revolution ring. And the other end of each rotating arm is connected with a self-rotating shaft. The rotation shafts and the revolution shaft are arranged in parallel, and each rotation shaft is coaxially provided with a rotation body. And each autorotation body is provided with an electric heating sheet. And the revolution ring drives the rotating arm to rotate around the revolution shaft above the sintering pallet. The electric heating piece rotates around the rotation shaft along with the rotation body. According to the ferris wheel type electric heating device, uniform electric heating ignition of a sintering material surface is achieved, and compared with the prior art, carbon emission is obviously reduced.

The utility model relates to the field of iron ore sintering, and discloses an iron ore sintering side suction dust removal device which comprises a pipeline, the inner wall of the front end of the pipeline is slidably connected with a first mounting frame, the inner wall of the upper end of the first mounting frame is detachably provided with a filter plate, and the inner wall of the right end of the filter plate is elastically connected with a clamping block through a first spring. A fixing block is fixedly connected to the outer wall of the front end of the first mounting frame, a second mounting frame is rotationally connected to the inner wall of the upper end of the fixing block, and a limiting assembly is arranged on the inner wall of the front end of the pipeline. According to the utility model, the mounting frame I, the mounting frame II, the limiting block and the like are arranged, a new filter plate is mounted in the mounting frame II, and then the limiting block is moved to release the limiting of the mounting frame II, so that the mounting frame II can be rotated to be on the same straight line with the mounting frame II, and then the mounting frame I leaves the pipeline after the mounting frame II is pushed into the pipeline; the filter plate can be replaced without shutdown, and the working efficiency is improved.