69results about "Discharge devices" patented technology

The utility model belongs to the technical field of ironmaking, and particularly discloses a protective device suitable for a molten iron trough of a blast furnace casting house, which comprises a cover head, a cover body and a cover tail, the cover body is formed by connecting a plurality of main frames end to end, each main frame comprises a frame top, frame waists and frame legs, the frame waists are welded on two sides of the frame top, and the frame waists are welded on two sides of the frame top. Frame legs are welded to the frame waists, a clamping groove is fixedly connected to the head end of the main frame, the head ends of the frame top, the frame waists and the frame legs are welded to the clamping groove, a clamping plate is fixedly connected to the tail end of the main frame, and the tail ends of the frame top, the frame waists and the frame legs are welded to the clamping plate. Modularized installation of the molten iron trough protective cover is achieved through the clamping groove and the clamping plate, the molten iron trough protective cover is higher than the ground, the observation window is formed, workers can conveniently observe the flowing condition of the main trough, the dust removal cover is connected to the tail end of the protective cover, and dust removal is more thorough.

This invention relates to a control system for preventing molten iron overflow during ladle discharge. The system includes a furnace platform with a molten iron trough and two sets of rails passing beneath the furnace platform. A swing chute is located below the outlet of the molten iron trough. Ladle cars are mounted on the two sets of rails, each carrying a molten iron ladle. Each set of rails has a molten iron discharge station located below the swing chute. A ladle car position sensor is installed beside each discharge station on the rails to detect whether the ladle car is in position. A rail weighing scale is installed at each discharge station, and a radar level gauge is installed above the discharge station to detect the liquid level in the molten iron ladle. This invention provides a control system for preventing molten iron overflow during ladle discharge, achieving accurate control of the discharge amount. It can remind workers to switch discharge lines in a timely manner and can automatically switch lines if workers do not make adjustments, reducing the risk of excessive molten iron overflow damaging the ladle and ladle car, and ensuring safe production.

A geothermally powered iron production subsystem includes using heat transfer fluid heated by a geothermal system with a wellbore extending from a surface into an underground magma reservoir. A hopper receives iron ore that is crushed and provided to a blast furnace, along with limestone and coke. The blast furnace is heated by a heat exchanger configured to receive the heat transfer fluid heated by the geothermal system to generate the heat provided to the blast furnace. One or more components of the iron production subsystem may also be powered by the heated heat transfer fluid.

The present application relates to a kind of blast furnace residual iron furnace residual iron mouth position determination method, comprising: the determination of furnace residual iron mouth elevation position and the determination of furnace residual iron mouth circumferential position and the like steps.The blast furnace residual iron furnace residual iron mouth position determination method provided by the present application, by the erosion rate of furnace refractory, blast furnace refractory thermal conductivity coefficient and blast furnace running time model, determine the thinnest part of refractory, i.e.elevation (i.e.latitude), by circumferential position model, again in combination with the convenience of residual iron and furnace cooling wall temperature detection, determine specific cooling wall (i.e.latitude), compared with prior art, it is a more scientific method.

The present application discloses a kind of blast furnace casthouse platform, including the platform body for supporting ditch system, platform body includes platform frame column and is arranged in ditch system below beam of platform frame column, frame body and ditch system below beam are all provided with pier, pier is used to carry ditch system, platform plate is arranged on platform frame column, platform plate is used to limit lateral displacement of ditch system, pier and platform plate form three-side support to ditch system, by adopting the platform structure of embedding in casthouse after ditch system self-bearing, it solves the problem that the gap between horizontal load generated by molten iron that ditch system itself bears and the platform displacement of casthouse is too large, also solves the problem that the expansion of molten iron high temperature generated in production process that ditch system itself bears and the expansion gap of casthouse structure itself is too large, also solves the problem that the damage to ditch system itself structure caused by large mechanical equipment in the process of regularly replacing internal material of ditch system due to process requirement does not affect the overall stability and durability of platform structure itself of casthouse.

A blast furnace slag runner with a slag quenching and tempering treatment function comprises a slag runner body of a broken-line-shaped structure; the chemical feeding pipe is arranged at the inlet end of the deslagging trough body; the electric heating pipe is buried at the bottom of the slag discharge channel body; the mixer is arranged at the outlet end of the deslagging trough body; and the storage tank is arranged at the outlet end of the lower part of the mixer. According to the utility model, the slag in a molten state is directly mixed with the conditioning agent in the slag discharge channel, so that the slag is quenched and tempered in the slag discharge channel, the subsequent processing process can be reduced, and the energy consumption is saved.

The invention discloses a method suitable for discharging residual iron during blowing out of a large blast furnace, which comprises the following steps: furnace washing operation before blowing out: physical furnace washing and chemical furnace washing are adopted for improving the flowability of the residual iron and reducing the residual quantity of condensed iron in a hearth; operation and furnace temperature control in the furnace shutdown process of the drop stock line: controlling the smelting process before the furnace shutdown so as to ensure the temperature of molten iron during the furnace shutdown; and discharging the residual iron after the furnace is shut down: promoting the discharge of the residual iron by supplying air and increasing the pressure in the furnace. According to the method, through furnace washing operation before blowing out and operation and furnace temperature control in the stockline drop blowing out process, the liquidity of residual iron is improved, the residual quantity of solidified iron in a hearth is reduced, and the temperature of molten iron during blowing out is ensured; and after the furnace is shut down, discharging of the residual iron is promoted by supplying air and increasing the pressure in the furnace.

This utility model proposes a blast furnace tapping area and a platform for leveling the top of its iron trough. The platform comprises multiple pre-cast modules connected in sequence. Adjacent pre-cast modules are secured with tongue-and-groove fasteners, and the gaps between adjacent modules are filled with fiber blankets. Each pre-cast module includes a steel structural support frame and a refractory castable layer cast on top of the steel structural support frame. This platform replaces the traditional on-site fabrication method for leveling with offline modular customization, shortening the on-site construction period and reducing costs, while also facilitating subsequent maintenance and repair of the tapping area platform.

The utility model discloses a blast furnace deslagging structure, which belongs to the technical field of steelmaking blast furnaces and comprises a workshop, a molten iron diversion trench, a blast furnace, a high-temperature-resistant gate, a slag outlet A, a slag outlet B and a chain plate conveying belt, the blast furnace is arranged at the top of the workshop in a matched manner, the slag outlet A is mounted on the other side of the blast furnace through the high-temperature-resistant gate, and the slag outlet B is arranged at one end of the slag outlet A; a chain plate conveying belt and a molten iron flow guide groove are installed on the two sides of the interior of the workshop correspondingly, and the slag outlet A extends into the molten iron flow guide groove. According to the utility model, the material guide mechanism is arranged, and the anti-splashing cover, the flow guide screen plate, the movable cavity, the baffle plate and the winch are matched for use, so that blockage in the iron slag discharging process can be prevented through the inclined flow guide screen plate, and each component is matched with the slag outlet A and the slag outlet B for use; molten iron and iron slag can be separated and conveyed and guided through an independent channel, and therefore the iron slag can be further prevented from blocking the slag outlet A.

The invention discloses a modularized platform for building a blast furnace in a narrow space and a building method, an upper furnace body and a lower furnace body of the platform are composed of a plurality of furnace body modules and a plurality of furnace seat modules, the furnace body modules are connected with the furnace seat modules through connecting nails, the furnace seat modules are mounted above a base station, and the furnace seat modules are connected with the base station through connecting nails. And the furnace body module is arranged on the upper layer of the furnace seat module. The modular platform and the construction method have the beneficial effects that a worker can construct the blast furnace in a narrow space through the modular platform and the construction method, the blast furnace can be constructed only through construction of the furnace body module and the furnace base module, and the same strength and safety can be achieved after construction is completed; as the furnace body module and the furnace seat module can be industrially produced and manufactured, the construction cost and time of the blast furnace can be effectively reduced.

The utility model relates to a fixed high-temperature slag discharging device with a monitor, which comprises a slag runner with a U-shaped section and a concrete layer and a refractory material layer which are sequentially arranged from outside to inside; the slag tank is arranged at the outlet end of the slag runner and is connected with the outlet end of the slag runner through a flow guide device; a heat compensation insulating layer is arranged in the wall of the slag tank; the monitoring device is arranged on the inner side wall and / or the bottom of the slag trough and comprises a temperature sensor and / or a flow detection device; and the temperature sensor, the flow detection device and the heat compensation insulating layer are electrically connected with the controller. The utility model solves the problems in the prior art that the temperature and the quality are not measured in the deslagging process, the slag cooling is large and the like.

The invention discloses a heat preservation device and method for a main iron runner of a blast furnace, and belongs to the technical field of main iron runners of blast furnaces. The heat preservation device comprises a first heat preservation cover and a second heat preservation cover which are arranged above the main iron runner of the blast furnace, and a travelling crane is arranged above the first heat preservation cover and the second heat preservation cover; two lifting devices connected to the first lifting lug and the second lifting lug respectively are arranged on the travelling crane, the lifting devices are connected with a control module, and the stemming machine and the tapping machine are both connected to the control module; through cooperative cooperation of the first heat preservation cover and the second heat preservation cover, full-coverage heat preservation of the blast furnace main iron runner in the whole process is achieved, the sealing effect of the sealing plate, the first sealing strip and the second sealing strip is matched, various gaps are effectively filled, the heat preservation coverage rate is greatly increased, and the heat preservation effect is improved by combining dual protection of the refractory material layer and the efficient heat insulation layer. The slag iron radiation heat loss can be blocked to the maximum extent, the temperature drop in the molten iron conveying process is reduced, and various production problems caused by too large temperature drop are avoided.

The utility model relates to a kind of split type swing ditch, the kind of split type swing ditch includes blast furnace, the one side of blast furnace is fixedly provided with hearth, hearth is provided with first installation groove and second installation groove, one end of the first installation groove is close to the blast furnace setting, the other end of the first installation groove is communicated with installation groove, molten iron ditch is provided in the first installation groove, the end of the molten iron ditch is inserted into the second installation groove, the bottom of the second installation groove is provided with turnover beam, swing ditch bracket is detachably installed on the turnover beam, swing ditch shell is detachably installed on swing ditch bracket, the side of second installation groove away from molten iron ditch is fixedly installed with swing mechanism, swing driving mechanism, further include swing pull rod, one end of swing pull rod and swing mechanism fixed connection, the other end of swing pull rod and swing ditch bracket rotation connection, with simple structure, reduce swing ditch replacement process, shorten swing ditch replacement time, prevent work injury event occurrence and so on.

Treating cooling water in industrial production facilities and associated systems, devices, and methods are disclosed herein. The system can comprise a cooling tower with a first and second cell, each having a housing to receive return water and a sump below to maintain supply water configured to directly contact molten metal. The system includes an inlet and an inlet line to provide return water to the cooling tower and an outlet and an outlet line to direct supply water back to the industrial production facility. The inlet, outlet, and cooling tower form a closed-loop network. Additionally, a blowdown line is fluidically coupled to the outlet to divert a portion of the supply water away from the closed-loop network.

The invention discloses a composite refractory material blast furnace skimmer and a preparation method thereof. The blast furnace skimmer is prepared from sintered corundum, brown corundum, white corundum, chromic oxide or activated aluminum oxide, zirconium oxide or boron carbide, metal chromium powder or metal aluminum powder, squamous graphite, silicon carbide, silicon carbide, aluminum oxide fibers, polypropylene explosion-proof fibers, high-temperature asphalt powder and a polyphosphate dispersing agent in different specifications. The preparation method comprises the following steps: respectively preparing a powdery raw material and a liquid raw material according to the raw material ratio; and mixing the powdery raw material and the liquid raw material, pouring and molding, and then air-drying, drying and sintering to obtain the product. The blast furnace skimmer provided by the invention has relatively high strength, slag corrosion resistance, scouring resistance, oxidation resistance and thermal shock resistance, and the service life of the blast furnace skimmer is greatly prolonged.

The utility model discloses a four-vortex molten iron sliding nozzle device for a pig-casting machine, and belongs to the technical field of pig-casting machine production and manufacturing. A four-vortex molten iron sliding nozzle device for a pig casting machine comprises a bottom plate, a connecting plate is installed at one end of the bottom plate, first side plates are arranged on the two sides of the bottom plate respectively, second side plates are arranged on the periphery of the connecting plate, a plurality of sliding nozzles are arranged on the surface of the connecting plate, fireproof plates are arranged between the first side plates and the bottom plate respectively, and the fireproof plates are connected with the bottom plate. A circulation channel is arranged between the pair of refractory plates, flow guide plate strips are installed on the surface of the connecting plate, and a plurality of flow dividing channels are arranged between the flow guide plate strips. According to the device, through the design of the spiral runner, the molten iron generates a vortex effect, the flow speed of the molten iron is remarkably increased, the conveying process of the molten iron is accelerated, the problems that the flow speed of the molten iron is low and the molten iron is easy to condense in a traditional device are solved, and the phenomena of narrowing of the runner and splashing of the molten iron caused by condensation of the molten iron are effectively prevented; and the occurrence risks of iron loss and safety accidents are reduced.

This invention discloses an online cleaning device for blast furnace slag caking, comprising a cooling channel, a water pipe installed on one side of the cooling channel, a first valve installed on the water pipe, and a sealing assembly connected to the end of the water pipe via a first pipe. A detection rod is slidably installed inside the sealing assembly, with one end of the detection rod passing through the water pipe and entering the cooling channel. Compared with the prior art, the cooling water in the cooling channel of this invention is always flowing, allowing operation to be carried out without stopping the machine. By reciprocating the movement of the detection rod, the operator can determine the degree of slag caking in the cooling channel based on the change in resistance it encounters, and can also directly break up the caking slag using the reciprocating motion of the detection rod. The broken slag is carried away by the continuously flowing cooling water, without affecting the production process of the Impala granulation system.

The utility model belongs to blast furnace smelt iron technical field especially for a blast furnace iron notch, including the shell, the top of shell is provided with the molten iron flow channel, is fixedly connected with the inner lining layer in the molten iron flow channel, can use the cooperation of heat exchange block and heat exchange pipe, through setting up both sides fixed block and setting up support block on fixed block, can make support block support the structure of above, guarantee the normal use of iron notch, and through this design can make the bottom of support block form the air passage, thereby improve the heat dissipation effect of iron notch, and through setting up heat exchange block and heat exchange pipe, can connect the cooling circulating water on heat exchange pipe, make heat exchange block absorb the heat in iron notch constantly and transmit to heat exchange pipe, the circulating water in heat exchange pipe will take away the heat on heat exchange pipe constantly, thereby realize the effect of efficient heat dissipation cooling, prevent the iron notch from overheating when long time use, improved the service life of iron notch.

The present application relates to the technical field of metallurgical site mine water detection, and specifically discloses an industrial mine water tank automatic slag breaking device and method; the device comprises an industrial camera, the industrial camera is arranged above an industrial mine water tank, the industrial camera is connected with a controller through a signal conversion line, the controller is connected with a motor through a signal conversion line, the motor is connected with a winding device, one end of a cable is wound on the winding device, the other end of the cable is connected with a slag removal hammer, and the slag removal hammer is located above the industrial mine water tank. The device is used for automatically detecting the mine water crust condition of a detection point, timely cleaning, avoiding the influence on the detection of online detection equipment, improving the operation efficiency of the entire detection equipment, and reducing the amount of manpower used.

The invention relates to a novel molten iron main runner lining structure forming method which comprises the following steps: step 1, arranging a permanent layer in a steel shell as a magnesium-silicon plate, step 2, spraying a coating material on a main runner shell, step 3, embedding an electromagnetic restraint system between the permanent layer and a working layer, step 4, pouring the working layer, after pouring of the castable, making contact with the molten iron part, on the lower portion of the molten iron main runner is completed, pouring of the iron slag part is conducted; 5, the slag line part of the iron runner is cleaned up; the method comprises the following steps of 1, installing a casting template of a blast furnace main iron runner iron slag part, 2, preparing casting slurry, 3, carrying out curing for about 18-24 h, carrying out demolding, and 4, carrying out baking according to an existing main runner baking system. According to the technical scheme, the technical problem that the temperature of the main iron runner shell is too high can be solved, and the temperature of the main iron runner shell is reduced to 300 DEG C or below from original 400 DEG C or above.

This utility model relates to an integrated oxygen lance, belonging to the technical field of blast furnace production equipment. It includes an integrated oxygen lance body, with a main valve installed internally in the middle. A voltmeter and an air inlet are also installed on the integrated oxygen lance body. A viewing hole is located at the center of the end of the integrated oxygen lance body, and a first viewing mirror is installed in the viewing hole. An oxygen lance periscope is also installed at the end of the integrated oxygen lance body, located around the first viewing mirror. The oxygen lance periscope is equipped with a camera and two adjustment knobs, which are threaded to the top and rear sides of the oxygen lance periscope, respectively, and both adjustment knobs are connected to the lens of the oxygen lance periscope. A second viewing mirror is installed at the end of the oxygen lance periscope. This utility model significantly improves the safety factor, enabling both on-site observation of the combustion status at the oxygen lance tip and remote observation, ensuring timely response based on the combustion status at the oxygen lance tip.

The application discloses a mud sleeve castable for a blast furnace tapping hole, which comprises the following steps: a) adding a certain amount of alumina micro powder, metal silicon powder, metal aluminum powder, nano elemental silicon powder, carbon-containing resin and a binder into a mixing device, uniformly mixing and stirring to obtain mixed material A, wherein the alumina micro powder is 6-8 parts, the metal silicon powder is 2-4 parts, the metal aluminum powder is 2-4 parts, the nano elemental silicon powder is 3-6 parts, the carbon-containing resin is 10-15 parts and the binder is 1-3 parts; b) adding a certain amount of composite corundum and silicon carbide powder into the mixing device, uniformly mixing and stirring to obtain mixed material B, wherein the composite corundum is 50-60 parts and the silicon carbide powder is 20-30 parts; compared with the prior art, the mud sleeve castable can avoid on-site construction problems, avoid the iron hole area air leakage phenomenon caused by the non-dense filling of the filler, has good mixing uniformity and improves the product performance stability.

The application provides a blast furnace swing chute automatic iron discharging method, and belongs to the technical field of blast furnace metallurgy, which comprises the following steps: obtaining real-time liquid level information of molten iron inside a blast furnace and real-time weight information of the blast furnace as a whole; preprocessing the real-time liquid level information and the real-time weight information to obtain preprocessed real-time liquid level information and real-time weight information; calculating a real-time iron discharging amount according to the preprocessed real-time liquid level information and the real-time weight information; and adjusting the opening degree of an iron discharging port of the blast furnace and the included angle between the swing chute and the vertical direction according to the real-time iron discharging amount. The blast furnace swing chute automatic iron discharging method provided by the application can collect relevant data of iron discharging of the blast furnace in two different dimensions by obtaining the real-time liquid level information of the molten iron and the real-time weight information of the blast furnace as a whole, so that the calculation of the iron discharging amount is supported by accurate and comprehensive real-time data, and the accuracy of the judgment of the iron discharging amount is improved.

This invention relates to the field of comprehensive resource utilization, specifically to an apparatus and method for increasing the amount of graphite precipitation in molten iron. The apparatus includes a blast furnace molten iron trough, with multiple injection pipes at the bottom. The other end of each injection pipe is connected to a pulverized coal feeding system via a conveying pipe. The method involves injecting pulverized coal into the molten iron trough through the injection pipes to increase the carbon content of the molten iron. As the molten iron cools, it becomes supersaturated with carbon, leading to graphite precipitation. This invention injects pulverized coal into the molten iron trough, utilizing the higher temperature of the molten iron and the stirring kinetic energy generated by the iron flow to promote rapid and efficient dissolution of the pulverized coal, increasing the carbon content. Furthermore, by employing a suitable blast furnace molten iron cooling rate, it significantly improves the subsequent graphite precipitation ratio under the same conditions. The carbon injected into the molten iron in the form of pulverized coal ultimately precipitates as graphite, greatly enhancing the added value of iron and steel metallurgy and resulting in significant economic benefits. It also has a significant impact on the development of emerging graphite resources.

The utility model relates to an arc-shaped lacing wire device for a blast furnace swing groove sliding nozzle, and belongs to the technical field of blast furnace stokehole swing grooves in the metallurgical industry. According to the technical scheme, the device comprises a blast furnace swing chute nozzle (1), a pull rod (3), adjusting nuts (4) and (8) and an arc-shaped lacing wire (6), the arc-shaped lacing wire (6) is a semicircle matched with the blast furnace swing chute nozzle (1), the arc-shaped lacing wire (6) is fixed to the blast furnace swing chute nozzle (1), the pull rod (3) is arranged on the arc-shaped lacing wire (6) in the radial direction, and the two ends of the pull rod (3) are in threaded connection with the adjusting nuts (4) and (8); a horizontal ruler (2) and a pointer (7) matched with the horizontal ruler (2) are arranged on the blast furnace swing chute nozzle (1); and a lifting lug (5) is fixed on the arc-shaped lacing wire (6). The utility model has the beneficial effects that 1) the cracking of the blast furnace swing groove sliding nozzle can be reduced or even avoided, the service life of the swing groove is prolonged, the repair cost is reduced, and 2) the iron flow is not dispersed any more, the safety of a transportation railway is ensured, and the smooth operation of the furnace condition is ensured.

The utility model belongs to sintered ore technical field discloses a blast furnace molten iron slag stopping equipment, first slag stopping frame sets up above main ditch, vibration slag discharge structure, vibration slag discharge structure sets up first slag stopping frame one side, first slag stopping frame's one side is provided with the second slag stopping frame that can stop iron slag, the top surface of second slag stopping frame is provided with detachable flow rod, the middle part of first slag stopping frame is fixed with two fixed blocks, the centre rod that drives second slag stopping frame left and right swing is provided between two fixed blocks, iron slag reaches second slag stopping frame through first slag stopping frame, small piece iron slag can continue to flow through the gap, big iron slag is intercepted and melts, the end of L frame rotation and contact transmission rod, transmission rod drives second slag stopping frame to swing in the removal groove left and right, the iron slag that stops slag stopping frame vibration and adheres in the one side of stopping slag stopping frame, the iron slag that has been melted smaller is vibrated and passes through the stopping slag stopping frame from the gap, the iron slag that is bigger and is melting is vibrated and melts the speed to accelerate.

The invention relates to the technical field of blast furnace ironmaking safety production, in particular to a liquid high-temperature slag iron out-of-control control method based on emergency diversion. Comprising the following steps that flow guiding devices are arranged at the connecting position of a blast furnace main runner and an iron runner and the connecting position of a slag runner and a dry slag pit in advance respectively, and the flow guiding devices are kept normally open in the normal iron tapping state, so that liquid slag iron can flow along a normal path. And when the liquid iron slag flows out of control, the flow guide devices at the two positions are triggered to be closed at the same time. And through the closed flow guide device, the liquid slag iron is blocked from flowing to the original path of the flow guide device, and is guided into the dry slag pit. And the flow direction of the liquid slag iron can be quickly, safely and effectively controlled, so that loss caused by out-of-control accidents is fundamentally avoided or reduced.

A blast furnace slag runner with a heat preservation function comprises a slag runner body which is of a U-shaped structure and is sequentially provided with a permanent layer and a working layer from outside to inside; wherein the permanent layer comprises a concrete layer and a refractory castable layer; the working layer comprises a phase change heat storage medium layer with a heat storage function and a refractory castable layer; and the runner cover is arranged at the opening end of the slag runner body. The blast furnace slag sensible heat recovery device can effectively utilize the heat storage function of the phase change heat storage material and the characteristic that the temperature is not changed in the phase change process, effectively recover blast furnace slag sensible heat, and avoid damage to materials on the surface of the slag runner in the slag tapping process and crystallization of molten slag on the surface after slag tapping is finished.

The utility model discloses a blast furnace granulation tower which comprises a granulation tower body, the granulation tower body is communicated with a slag runner, a slag flushing water gap and a water slag runner, the slag runner and the water slag runner are located in two different directions of the non-opposite sides of the granulation tower body, a crescent slope is arranged on the inner bottom surface of the granulation tower body, and the crescent slope is arranged along the direction from a concave edge to a convex edge. The height of the crescent slope is gradually increased; the crescent slope is located on the central extension line of the slag runner and the central extension line of the water slag runner at the same time, and the concave edge of the crescent slope faces the middle position of the slag runner and the middle position of the water slag runner; and the bottom of the granulation tower body is also communicated with a bottom flushing water pipe. According to the granulating tower disclosed by the utility model, the granulating slag in the granulating tower body can be accurately steered through the crescent slope, so that the granulating slag can smoothly flow towards one side where the granulating slag channel is positioned, and meanwhile, the crescent slope is utilized for exciting water waves, and the bottom flushing water pipe is used for spraying water flow to drive and impact the slag to be discharged, so that the slag is prevented from being stacked in the granulating tower.