288 results about "Bloomery" patented technology

The invention relates to the technical field of metallurgical furnace charge conveying and control, and discloses a top-blown furnace multi-channel supersonic jet type feeding control method and system.The method comprises the steps that flow distribution in a nozzle is achieved through a piezoelectric ceramic high-speed valve installed at a pipeline inlet, and a nozzle servo motor is controlled at the top of a spray gun to adjust the spray angle of the spray gun; the feeding speed, pressure and temperature are monitored in real time through a pressure sensor and a flow sensor arranged in an inlet area of the pipeline and an infrared thermometer mounted at the top of the furnace; the carrier gas flow, the nozzle opening degree and the spraying angle are dynamically adjusted through control of the PLC executing mechanism, and collaborative optimization of the material flow vector, the flow field in the hearth and the heat and mass transfer process is achieved. The system comprises a spray gun, a piezoelectric ceramic high-speed valve, a flow sensor, an infrared thermometer, a nozzle control servo motor, a temperature measurement control small servo motor and a control room. The comprehensive operation efficiency of energy density distribution optimization, reaction efficiency improvement and energy consumption index reduction of the molten pool reactor is finally realized.

The invention discloses an energy-saving and emission-reducing production method and device for a blast furnace, a medium and electronic equipment.The method comprises the steps that furnace charge information of original furnace charge to be fed into the furnace is obtained, and the furnace charge information is used for indicating furnace charge components of the original furnace charge; target production operation meeting the production requirements of the blast furnace is predicted based on the furnace charge information through the trained prediction model, and the production requirements comprise the steps of controlling the energy consumption of the blast furnace to be minimized and controlling the carbon emission of the blast furnace to be minimized. The prediction model constructs a quantitative relation between energy consumption and production operation and a quantitative relation between carbon emission and production operation; and controlling the blast furnace to execute the target production operation. According to the technical scheme, energy conservation and emission reduction in the blast furnace production process can be achieved.

The invention provides high-phosphorus wear-resistant gray cast iron and a production method thereof, and belongs to the technical field of high-phosphorus wear-resistant gray cast irons.The production method comprises the following steps that raw materials are inspected; smelting is conducted, specifically, waste steel, gray iron foundry returns, pig iron, a carburant and ferrophosphorus are sequentially put into an electric furnace to be melted; nickel, chromium and copper are sequentially added into the electric furnace, and the molten iron is quenched and tempered, so that the final components of the molten iron meet the requirements; molding: preparing a casting mold; a casting ladle is preheated, meanwhile, an inoculant is placed at the bottom of the casting ladle, then molten iron is poured into the casting ladle, and the inoculant is added along with flow in the process that the casting ladle conducts casting into the mold; box opening: the box is opened after the temperature is reduced, and the formed high-phosphorus wear-resistant gray cast iron is obtained; and performing heat treatment: performing high-temperature annealing on the high-phosphorus wear-resistant gray cast iron, and inspecting the casting to obtain a final finished product. According to the technical scheme, the purpose of improving the abrasion resistance and the mechanical performance of the gray cast iron is achieved.

The utility model discloses a kind of refractory furnace burden grinding equipment, belong to refractory furnace burden processing technical field, including grinding box, the support column is equipped in grinding box bottom, the feed hopper is installed in grinding box top, buffering cavity and grinding cavity are equipped in grinding box interior, buffering cavity is located in grinding cavity upside, feed hopper is connected with buffering cavity interior, buffering cavity interior is equipped with buffer inclined plate;Buffering cavity is communicated with grinding cavity by feed channel;Grinding cavity interior is equipped with grinding roller, support plate, support slide rail;By setting buffering cavity, buffering effect can be played, prevent a large number of caking refractory furnace burden from impacting to grinding roller, cause damage to grinding roller;Refractory furnace burden is passed to grinding roller surface by feed channel downwards, two driving motors make two grinding rollers rotate oppositely, refractory furnace burden is ground, and by setting connecting plate in the moving part of pneumatic cylinder, connecting plate can be continuously resisted on grinding roller surface, refractory furnace burden adhered to grinding roller surface is cleaned.

The utility model discloses a blast furnace charging bucket gas recovery device which comprises a charging bucket, one side of the charging bucket is connected with a dust remover used for filtering gas through a pipeline, one side of the dust remover is connected with a high-pressure clean gas pipe network through a pressure equalizing pipe, and the surface of the high-pressure clean gas pipe network is connected with a low-pressure clean gas outer net through a first connecting pipe. The bottom of the high-pressure clean gas pipe network is connected with a first water tank, the bottom of the low-pressure clean gas outer network is connected with a second water tank, through connection between the multiple water tanks and the pipe network, it is ensured that gas can flow smoothly in the system, the problem of gas leakage is reduced, gas leakage is effectively prevented through the liquid seal principle of a U-shaped pipe, and the service life of the system is prolonged. And the joint of the bleeder and the second water tank is communicated with a low-pressure clean gas outer net through a third connecting pipe, and multiple pipelines work cooperatively, so that the gas can be fully collected and conveyed to a corresponding pipe network, and the gas recovery efficiency is remarkably improved.

The invention provides an application and a device of recycled silicon powder in polycrystalline silicon production in ferrosilicon smelting. High-purity fine silicon powder generated in the polycrystalline silicon production process is recycled and used for ferrosilicon smelting, resource utilization of industrial solid waste is achieved, and remarkable environmental protection and economic value is embodied. The high-purity silicon powder can be directly subjected to a solid-phase reduction reaction with iron oxide in furnace charge, so that the consumption of coke or other carbon sources is reduced, the emission of carbon dioxide is reduced, and the energy consumption required for reducing silica into silicon is also reduced. According to the scheme, complex impurity removal treatment is not needed, the silicon powder can participate in the reduction reaction through segmented blowing of the blast furnace tuyere, operation is easy and convenient, the source is stable, the quality uniformity of raw materials is guaranteed, and therefore the chemical component controllability and the smelting efficiency of silicon iron products are improved. The recycled silicon powder is small in particle size, large in specific surface area and high in reaction rate, the smelting time can be further shortened, and the overall production efficiency is improved.

The invention discloses high-strength wear-resistant wind power ductile iron and a processing technology thereof, and belongs to the technical field of casting. The processing technology of the high-strength wear-resistant wind power ductile iron comprises the following steps: A1, sequentially adding waste steel, a carburant, pig iron, foundry returns and ferroniobium into an intermediate frequency furnace, standing after all furnace charges are molten, and removing slag; a2, a spheroidizing agent, a nucleating agent, metal antimony, titanium carbide and a covering agent are sequentially added to the bottom of a steel ladle, and then molten iron in the step A1 is poured into the steel ladle for spheroidizing and inoculation; a3, the molten iron obtained after spheroidizing and inoculation is subjected to slagging-off and then poured into a casting mold, and a stream inoculant is added in the pouring process; a4, after pouring is finished, slowly cooling in the sand mold to below 400 DEG C, and removing a casting from the casting mold; and A5, the casting is subjected to pulse current quenching treatment and then subjected to pulse current normalizing treatment, and the high-strength wear-resistant wind power ductile iron is obtained. The prepared high-strength wear-resistant wind power ductile iron is high in strength and good in wear resistance, and the low-temperature impact performance meets the requirement of QT500-14AL.

The utility model relates to the technical field of submerged arc furnaces, in particular to an industrial silicon double-rotation submerged arc furnace body structure which comprises a submerged arc furnace shell, a feeding opening is formed in the outer portion of the submerged arc furnace shell, a stacking mechanism used for stacking furnace charge is arranged on the face, corresponding to the feeding opening, of the submerged arc furnace shell, and the stacking mechanism comprises a stacking frame, a push plate, a through hole and a push rod. The stacking frame is arranged outside a submerged arc furnace shell and used for storing furnace charge, the push plate is slidably connected to the inner side of the stacking frame and used for pushing the furnace charge, the through hole is formed in the outer side of the stacking frame, the furnace charge is poured into the stacking frame, the stacking frame can serve as a temporary storage point, and scattering of the furnace charge is avoided; the furnace charge is pushed from the inner side of the stacking frame to the inside of the submerged arc furnace to move, the corresponding amount of furnace charge can be pushed into the submerged arc furnace according to needs, meanwhile, the push rod and the push plate are used in cooperation, the furnace charge can be rapidly pushed into the submerged arc furnace, the time for manually arranging the furnace charge is shortened, and the charging efficiency is improved.

A method for smelting high-titanium vanadium-titanium magnetite by means of a hydrogen-enriched carbon-recycling oxygen blast furnace. The method comprises: S1, determining a furnace charge structure; S2, determining a furnace charge distribution regime; S3, determining a blast regime; S4, determining a thermal regime; S5, determining a slagging regime; and S6, smelting high-titanium vanadium-titanium magnetite on the basis of the relevant parameters in steps S1 to S5, wherein the furnace charge structure comprises ores, the ores comprise vanadium-titanium sinter and vanadium-titanium pellets, the vanadium-titanium sinter accounts for 10-70% by mass, the vanadium-titanium pellets account for 90-30% by mass, and the in-furnace mass percentage of vanadium-titanium magnetite contained in the vanadium-titanium sinter and the vanadium-titanium pellets is greater than 65%. The present invention can further improve the smelting intensity on the basis of reducing carbon emissions, thereby achieving efficient comprehensive utilization of the high-titanium vanadium-titanium magnetite, and further achieving efficient smelting of schreyerite.

The present application relates to a kind of blast furnace distribution chute minimum distribution circle number quantification method and application.Firstly, the maximum material passing area is calculated by using the collision point of the material falling from the center throat pipe to the chute receiving bottom, the maximum material flow volume flow allowed by the initial velocity and the maximum material passing area after material flow collision is calculated, and then the shortest distribution time of ore group and coke group is calculated, finally, the minimum distribution circle number of each group is calculated according to the chute rotating speed.When the original distribution circle number is greater than or equal to the minimum distribution circle number, there is no risk of material overflow, and the distribution matrix does not need to be adjusted;When the original distribution circle number is less than the minimum distribution circle number, there is a risk of material overflow, and the distribution matrix needs to be adjusted to make the total distribution circle number exceed the minimum distribution circle number.The present application can accurately grasp the material flow velocity and distribution law, realize the precise control of distribution parameters, ensure the stable material falling point, uniform material surface and reasonable airflow distribution, and support the efficient and stable operation of blast furnace.

The invention discloses a blast furnace burden porosity calculation method based on a Monte Carlo algorithm, and belongs to the technical field of blast furnace ironmaking. The method comprises the steps that firstly, according to a particle size distribution probability density function, Monte Carlo random sampling is adopted to generate and initialize the particle size of furnace charge particles; then, in a three-dimensional Cartesian coordinate system, a three-ball contact geometric constraint equation set is established and solved, and spatial positions of newly-added particles in an existing accumulation system are searched; meanwhile, the search radius of the supporting particles is dynamically adjusted, and collision detection is executed; and finally, after the total number of the particles reaches a preset threshold value, calculating the total volume and the particle volume in a set spherical calculation domain, and determining the porosity by adopting a moving average and moving variance statistical method. According to the method, the limitation of a traditional experimental method and an existing numerical model is overcome, high-precision and high-efficiency calculation of the blast furnace burden porosity is realized, and a reliable theoretical tool is provided for optimizing a blast furnace burden distribution system and analyzing air permeability.

The application provides a preparation method of iron-carbon composite furnace charge and the iron-carbon composite furnace charge and belongs to the technical field of metallurgical processes. The iron-carbon composite furnace charge provided by the application comprises the following raw materials in parts by weight: non-coking coal powder 61-84 parts; iron oxide 10-30 parts; high-temperature accelerator 6-9 parts; hot water 8-12 parts; the preparation method comprises the following steps: after the raw materials are uniformly mixed, the mixed materials are pelletized to obtain pellet materials; the pellet materials are subjected to segmented carbonization at 650 DEG C-1050 DEG C; the pellet materials after carbonization are directly sprayed and cooled to obtain the iron-carbon composite furnace charge. The non-coking coal is not as good as the coking coal in terms of cohesiveness, and the high-temperature strength is low, so it is difficult to be applied in blast furnaces. In the application, the iron oxide is added in the non-coking coal, the particle size of the furnace charge is changed, and the carbonization treatment is carried out in a non-direct roasting furnace to form the iron-carbon composite furnace charge which can replace the coking coal. The application meets the national conditions that the non-coking coal reserves are rich in China, solves the technical problem of insufficient energy storage of the coking coal, reduces the cost, and the carbon emission reduction reaches more than 10%.

This invention discloses a neutral refractory material for medium-frequency induction furnace linings. The raw materials include: 78-83 parts by weight of quartz sand, 5-7 parts by weight of fire clay, 5-7 parts by weight of fluorite, 0.8-1.2 parts by weight of alumina, 1.2-1.8 parts by weight of silicon carbide, and 0.3-0.7 parts by weight of calcium oxide. The preparation method is also disclosed. The method of this invention is simple, with the main components being quartz sand, fire clay, and fluorite, with quartz sand comprising the largest proportion. In addition, some additives such as alumina, silicon carbide, and calcium oxide are added to improve the refractory properties and chemical reactivity of the furnace charge. This results in a material with certain slag resistance and a good service life, exhibiting good overall performance and suitable for melting various metals. The furnace lining mixture is non-toxic, harmless, environmentally friendly, and pollution-free.

The invention discloses a method for directly preparing ferrovanadium by taking ammonium vanadate as a raw material. The method comprises the steps of raw material pretreatment, vacuum heating decomposition, furnace charge mixing and aluminothermic reduction smelting. In the step of vacuum heating decomposition, the pretreated ammonium vanadate is loaded into a double-cone rotary vacuum dryer to be subjected to vacuum heating, so that the pretreated ammonium vanadate is decomposed, ammonia gas and water vapor are released, and a decomposition product with V2O4 and V2O5 as main components is obtained; the step of mixing the furnace charge comprises the following steps: uniformly mixing a decomposition product with aluminum powder, lime, iron powder and a cold charge according to the mass ratio of (60-120): (30-65): (6-10): (6-10): (6-15) based on the mass of V2O5; in the aluminothermic reduction smelting, a magnesium rod is used for igniting furnace charge to carry out aluminothermic reaction; and after the reaction is finished, cooling to room temperature to obtain the ferrovanadium alloy. The method can effectively simplify the process flow, reduce the production cost, improve the product quality, and solve the technical problems of tedious steps and high cost of the traditional process.

This invention discloses a method and apparatus for correcting coefficients in blast furnace charge tank weighing calculations. By dividing the material into different weight groups and defining different furnace top pressure ranges based on the number of weight groups, the method of corresponding different furnace top pressures to different weight ranges is used to calibrate the charge tank weighing system online, correcting relevant parameters in the blast furnace charge tank weighing system. This solves the problems of drift, nonlinearity, and abrupt changes in the charge tank weighing system caused by various factors during the charging process in the prior art, enabling the charge tank weighing system to be dynamically calibrated online, thus achieving the technical effect of improving the accuracy of charge tank weighing data.

The invention relates to the technical field of blast furnace ironmaking, and particularly discloses a method for cleaning a dead coke pile in a large blast furnace, a cleaning agent is added into the blast furnace, the cleaning agent adopts hot-melt briquettes or crushed iron particles, and the adding batch weight of the cleaning agent is controlled; controlling the material distribution angle and the material distribution turn number of the cleaning agent; an independent cleaning agent material is added after five batches of normal material distribution, and circulation is carried out; controlling the temperature of the molten iron and the mass percentage of Si element in the molten iron during cleaning of the dead coke pile; the dead coke stockpile cleaning is continuously carried out; according to the method, high-grade hot-melt briquettes or small-particle-size crushed iron particles are adopted as a cleaning agent to clean coke powder shells on the outer layer of the dead coke pile, so that the air permeability and liquid permeability of the dead coke pile are improved; on the basis that an existing material distribution mode is not changed, a group of special cleaning agents entering the blast furnace from special positions are periodically added and used for cleaning coke powder on the outer edge of a central dead coke pile; the furnace charge structure during normal production is not changed, and the furnace condition fluctuation of the blast furnace is avoided to the greatest extent.

The utility model provides a waste calcium carbide remelting and upgrading conveying device, which belongs to the technical field of conveying devices, and comprises a crushing chamber, a rotator arranged in the crushing chamber, two first rotating shafts rotationally connected in the rotator, two crushers fixedly connected to the lower ends of the two first rotating shafts, and two second rotating shafts rotationally connected in the two crushers. The two first gears are fixedly connected to the circumferential surfaces of the two first rotating shafts, the gear ring is fixedly connected to the interior of the crushing chamber, and the first gears are meshed with the gear ring. Meanwhile, powder calcium carbide directly reaches the furnace bottom through the inside of the electrode and does not make contact with a furnace charge layer, current shunting is eradicated, waste products are directly added to the furnace bottom after being powdered and can be rapidly reacted and fused with semi-finished product calcium carbide, and electric energy consumption is greatly reduced.

The invention belongs to the technical field of blast furnace burdens, and particularly relates to pellets and a preparation method thereof. The pellet consists of the following raw materials: 75-82 wt% of fine iron powder; 17 to 22 wt% of modified phosphogypsum; 1-3 wt% of a composite binder; the modified ardealite is prepared by the following preparation processes: drying and crushing ardealite, adding the crushed ardealite into water, stirring, filtering, and drying to obtain pretreated ardealite; and mixing the pretreated ardealite with blast furnace ash and sodium hydroxide, and calcining to obtain the modified ardealite. The prepared pellets are high in iron grade and excellent in strength.

The invention discloses a blast furnace burden surface segmentation method and device based on dynamic radius and multi-modal characteristics. The method comprises the following steps: initializing center point coordinates and radius of a blast furnace burden surface infrared image; dividing the blast furnace burden surface into a core high-temperature area, a relative high-temperature area and a low-temperature area based on the double temperature thresholds; establishing a radius double-constraint condition, and performing radius optimization under the condition that the condition is met; fusing the temperature feature and the texture gradient feature, calculating a multi-modal feature weight, and updating a centroid coordinate based on weighted average; executing a closed-loop feedback process of radius-centroid alternating optimization, and iterating until the central point and the radius converge; segmenting the image into a high-temperature central area and a low-temperature peripheral area based on the converged optimal parameter; differentiated processing algorithms are adopted for different areas, and Gaussian weighted fusion is adopted to obtain a globally consistent final result. According to the method, robust and self-adaptive region segmentation of the blast furnace burden surface is realized, a basis is provided for subsequent regional three-dimensional reconstruction, and the method has certain applicability and reliability.

The invention discloses a nodular cast iron material with a thick and large section and a preparation method thereof. The nodular cast iron material is mainly prepared from the following raw materials: 35-50% of pig iron, 30-50% of scrap steel and 0-30% of foundry returns. And the carburant accounts for 0.45%-0.9% of the total amount of the pig iron, the scrap steel and the foundry returns. According to the technical scheme, on one hand, the silicon content is increased, and on the other hand, all alloy elements in the molten iron are subjected to specific proportion regulation and control, such as carbon (C), manganese (Mn) and other main elements and magnesium (Mg) auxiliary elements; through the adjustment, the nodular cast iron material with the thick and large section has good basic mechanical properties, the prepared as-cast nodular cast iron with the thick and large section is ferrite nodular cast iron, the tensile strength Rm of the as-cast nodular cast iron is larger than or equal to 650 MPa, the Rp yield strength is larger than or equal to 500 MPa, and the elongation A is larger than or equal to 7%.

The invention relates to the technical field of magnesium oxide manufacturing, in particular to a smelting method of magnesium oxide for synthesizing mica. The smelting method comprises the steps that at least two magnesium-containing raw materials are selected and mixed, and the chemical components of the magnesium-containing raw materials are controlled to meet the preset standards that Fe2O3 is smaller than or equal to 0.16%, MgO is larger than or equal to 47.5%, CaO is smaller than or equal to 0.5%, and ignition loss is larger than or equal to 51%; the mixed raw materials are subjected to crushing, screening, washing, drying and magnetic separation iron removal pretreatment; putting the charging material into smelting equipment, and carrying out open-type high-temperature smelting; after smelting is finished, the smelting equipment is sealed and subjected to heat preservation, the smelting equipment is slowly cooled, the cooled magnesium oxide molten lumps are crushed and sorted, and a finished product is obtained; the detection result shows that the finished product magnesium oxide meets the requirements of raw materials for synthesizing mica. Through multi-component compatibility of magnesite and seawater magnesium oxide, dependence on single high-grade ore is broken through, pretreatment purification, high-temperature long-time smelting and controllable slow cooling processes are combined, and stable production of low-cost and high-quality magnesium oxide for synthetic mica is realized.

The application provides a protection device and conveying device for stockpiling of a blast furnace stockhouse, which is installed on the stockhouse and comprises a pull rod, one end of the pull rod being rotatably connected to one end of the stockhouse, the other end of the pull rod being rotatably connected to the other end of the stockhouse and extending outside the stockhouse; a material blocking plate assembly, which is arranged on the outer wall of the middle part of the pull rod and used for triggering the rotation of the pull rod when stockpiling; a limiting baffle assembly, which is arranged on the end part of the pull rod extending outside the stockhouse; and a limiting switch assembly, which is arranged on the outer wall of the end part of one end of the stockhouse and used for sensing the triggering of the limiting baffle assembly; when the stockpiling of the furnace stock rises, the material blocking plate assembly contacts the stock surface and rotates to drive the pull rod to rotate, the limiting baffle assembly is driven by the pull rod to rotate, and the limiting switch assembly is contacted by the limiting baffle assembly to output a triggering signal. The application truly reflects the stockpiling condition in the stockhouse, so that the staff can timely judge the worsening trend of the stockpiling in the stockhouse outside the stockhouse and make a response, thereby avoiding stockpiling accidents.

The present application relates to a kind of coal temperature control quantitative modular precise control w ([Si]) blast furnace smelting method, belong to blast furnace smelting technical field.The method includes benchmark burden, burden calculation, parameter, index check analysis, input injection coal powder adjustment amount precise control w ([Si]) And slag iron composition, smelting and parameter control etc.Steps.The present application is based on blast furnace basic theory, blast furnace material balance and heat balance principle, solves blast furnace routine smelting time material speed-coal ratio-basicity-theoretical fuel ratio, and each smelting parameter coordination balance, w ([Si]) And slag iron composition control, smelting period and index prediction control etc.Related data influence each other processing, by 0~3 times coal adjustment can reach specified molten iron w ([Si]) Value, more is to ensure w ([Si]) It is smelted in the specified range, not only improve the degree of furnace condition smooth, also significantly reduce fuel ratio and smelting cost.The method is simple, control is fast and accurate in characteristics.Meanwhile, the method is applicable to different volume, different burden structure, with strong adaptability.

The invention relates to a green energy-driven circulating blast furnace partition reduction melting separation process which comprises the following steps: reducing and heating first furnace top gas by taking green electric power as a main energy source to obtain high-temperature circulating gas; high-temperature circulating coal gas is sprayed into the furnace through a blast furnace tuyere and ascends to the upper part of the blast furnace through a melting zone at the lower part of the blast furnace to form an indirect reduction zone, and the furnace charge is reduced by the high-temperature circulating coal gas in the indirect reduction zone to obtain metallized furnace charge and second furnace top coal gas; the second furnace top gas returns to the step S1 for reduction and heating; and the metallized furnace burden moves downwards to the melting zone in the blast furnace, and slag and iron are discharged after melting separation. Coal gas is driven to be recycled and regenerated through green electric power, reduction and heating of coal gas CO2 at the top of the blast furnace are achieved, dependence of a traditional blast furnace on fossil fuel combustion is greatly reduced, the coal gas utilization rate is effectively increased, and carbon emission is reduced.

This utility model relates to the technical field of calcium carbide furnace equipment and discloses a novel anti-clogging feeding device for calcium carbide furnace hoppers. It includes a support frame, a feeding hopper on the inner side of the support frame, and an anti-clogging mechanism at the bottom of the feeding hopper. The anti-clogging mechanism actively pushes away blocked raw materials. A vibration mechanism is installed inside the feeding hopper to loosen the blocked raw materials. The anti-clogging mechanism includes a discharge channel, the top of which is fixedly connected to the bottom of the feeding hopper, and a fixed base is fixedly connected to the top of the outer side of the discharge channel. In this utility model, an infrared sensor detects material flow. When a blockage is detected, a hydraulic rod extends and retracts, causing a lifting block to move, which in turn moves a push rod within the discharge channel. After clearing the blockage, the hydraulic rod resets, achieving real-time monitoring and active clearing of blockages in the discharge channel. This effectively prevents and resolves blockage problems, avoiding calcium carbide furnace shutdowns due to material shortages.

The application relates to a burden structure, which comprises: 3.94-37.07% of full-secret fine powder sinter, 2.63-55.89% of common sinter, and 40-60% of acid pellet; the full-secret fine powder sinter comprises: 54-55% of TFe, 16.11-17.11% of CaO, 2.95-3.35% of SiO2, 1.0-1.5% of Al2O3, and 1.07-2.07% of MgO; the full-secret fine powder sinter has a reduction disintegration index, and the proportion of the particle size greater than 6.3 mm is 94-95%; when the burden structure is used for smelting, the proportion of the acid pellet can be greater than 40%, and the furnace-in grade can be greater than 60%; the burden structure has good low-temperature disintegration, reduction degree and molten drop performance when smelting; and the burden structure breaks the limitation that alkali pellet must be used for developing high-proportion pellet blast furnace smelting technology.

The invention relates to a method for regulating and controlling blast furnace tapping based on balance of blast furnace slag and iron. The method comprises the following steps: S1, acquiring a blast furnace burden and tapping data set according to a manually preset data acquisition period; s2, the actual tapping amount and the actual slag amount in each tapping time period are calculated; s3, according to the added raw materials and fuel, calculating the theoretical tapping amount and the theoretical slag tapping amount corresponding to each time of tapping; s4, calculating the difference value between the theoretical tapping amount and the actual tapping amount and the difference value between the theoretical deslagging amount and the actual tapping amount of each time of tapping so as to obtain the slag-iron amount difference; and S5, calculating a slag-iron balance judgment coefficient, comparing the slag-iron balance judgment coefficient with a manually preset judgment threshold value, and then executing a corresponding control strategy according to a comparison result. According to the method, the timeliness and accuracy of calculation are improved, and meanwhile interference of human factors is reduced; the operation level of the blast furnace is improved, the blast furnace stably and smoothly operates, and the operation cost is reduced.

The application provides a glass electric furnace material pile form control system, the glass electric furnace has a material stacking area, a first feeding port and a second feeding port located at the end of the material stacking area, and a discharge port located at the end of the other end of the material stacking area; the material pile form control system comprises a first feeding mechanism for feeding through the first feeding port, a second feeding mechanism for feeding through the second feeding port, a monitoring unit and a control unit; the monitoring unit is used for monitoring the voltage on both sides of the material stacking area; the control unit controls the feeding rate of the first feeding mechanism and the second feeding mechanism according to the monitoring data of the monitoring unit, so that the feeding rate of the first feeding mechanism or the second feeding mechanism located on the side with lower voltage is greater than the feeding rate on the side with higher voltage. The application adjusts the feeding amount on both sides of the material pushing area to make the voltage on both sides of the material stacking area consistent, so as to guarantee the stability and continuity of the material pile form, and avoid the situation that the material is broken or unevenly stacked.

The present application relates to a kind of blast furnace material speed calculation system, belong to intelligent metallurgy field, comprising: data acquisition module, for obtaining the material line depth when loading material, corresponding time and the weight data of material;Data preprocessing module is used to judge the validity of single or multiple measurement data, and the average value of the material line depth effective value of the current material to be laid is calculated, and the data is saved;Material descending speed calculation module is used to process and calculate according to the collected data, obtain the latest material descending speed;Storage module is used to store the collected data and calculated data.The present application also provides a kind of blast furnace material speed calculation method, equipment and computer readable storage medium.

The invention discloses a method for inhibiting elemental sulfur in top blowing smelting tail gas of a copper smelting Ausmelt furnace. The method comprises the following steps: (1) ensuring sulfur-oxygen balance in the Ausmelt furnace: strictly controlling the mass fraction of S in copper concentrate fed into the furnace to be stabilized at 25-35%; (2) reduction reaction of a molten pool is reduced, wherein furnace burden moisture is increased to replace SO2 to be reduced, and meanwhile the use amount of lump coal is reduced; (3) strengthening a molten pool sulfur oxidation reaction: increasing the total amount of air and oxygen of a spray gun, optimizing spray gun parameters and a material drop point position, and enhancing molten pool stirring and sulfur reaction efficiency; (4) intensifying secondary oxidation of elemental sulfur in the flue gas: maintaining micro-negative pressure of a hearth of the Australian furnace to delay the flow rate of the flue gas, and increasing blast at the upper part of the hearth to improve the oxidation atmosphere; according to the method, the content of elemental sulfur in the flue gas of the Australian furnace can be remarkably reduced, stable operation of rear-end equipment is guaranteed, equipment does not need to be newly added, low-cost inhibition of elemental sulfur in the top blowing smelting tail gas of the Australian furnace can be achieved through process optimization, and stable operation of a copper smelting system is effectively guaranteed.