428results about "Cooling devices" patented technology

A system for measuring a thickness of a cooling plate, said system comprises: a probe holder unit (10) designed to fit inside a coolant channel (18) of the cooling plate (12), the probe holder unit comprising a housing (30) extending along a length axis (L), an ultrasonic probe (32) being arranged in said housing to be able to transmit and receive ultrasonic waves from a sensor side; a rear housing part (36) being moveably arranged at the rear side, transversally to the length axis, and elastically biased away from the sensor side, thereby permitting the probe holder unit to adapt to the cooling channel size; a drive chain (14) to assist the progression of said probe holder unit (10) through the length of the coolant channel, said drive chain linked to first connecting means (48) at said first end of said housing. A cable assembly (60) comprising electric wires connects the ultrasound probe. An encoder arrangement (15) is configured to cooperate with the drive chain such as to measure a length of drive chain passing along it, the encoder arrangement comprising a first gear (76) meshing with said drive chain and coupled to an encoder.

The utility model discloses a blast furnace castable cooling wall, which relates to the technical field of blast furnace body cooling equipment and comprises a cooling wall base body, a cooling water pipe is arranged inside one side of the cooling wall base body, and a protective sleeve is sleeved on the side surface of the cooling water pipe extending out of the cooling wall base body; dovetail-shaped grooves are vertically formed in the side face of the other side of the cooling wall base body at intervals, anchoring parts are transversely arranged in the dovetail-shaped grooves at intervals, the anchoring parts in every two adjacent dovetail-shaped grooves are vertically arranged in a staggered mode, and a pouring layer is poured on one side of the dovetail-shaped grooves of the cooling wall base body; the blast furnace cooling wall has the beneficial effects that the part of the cooling water pipe pre-embedded in the cooling wall base body is protected by the protective sleeve, the casting technology of the blast furnace cooling wall hot surface after casting molding can adopt on-site integral casting construction, and the casting material is integrally cast on the hot surface of the cooling wall, so that the problems of falling and damage of refractory bricks, complex construction process and low construction cost in the past can be avoided. And the slag adhering capacity is high, the overall performance is good, and the device can adapt to large blast furnace body cooling working conditions.

The invention relates to a tuyere small sleeve and a blast furnace. The tuyere small sleeve comprises a sleeve main body which comprises an inner sleeve and an outer sleeve, and an annular mounting cavity is defined by the inner sleeve and the outer sleeve; the multiple partition plates are arranged at the front end of the mounting cavity at intervals around the peripheral side of the inner sleeve, all the partition plates extend in the radial direction, cooling channels are defined by the adjacent partition plates, the outer wall of the inner sleeve and the inner wall of the outer sleeve, and all the cooling channels communicate with the mounting cavity; the baffles are arranged between the inner sleeve and the outer sleeve in a sleeving mode and connected with the partition plates, the baffles divide the cooling channels into first flow channels, connecting flow channels and second flow channels which communicate with one another, and cooling liquid flows into the second flow channels from the first flow channels through the connecting flow channels. The partition plates can support the inner sleeve and the outer sleeve in the installation cavity, the structural strength is improved, meanwhile, cooling liquid can make contact with the partition plates, the outer wall of the inner sleeve and the inner wall of the outer sleeve in the cooling channel, the heat exchange effect is improved, abrasion and melting loss of the tuyere small sleeve caused by high temperature are reduced as much as possible, and the service life of the tuyere small sleeve is prolonged.

The utility model discloses a hydrogen-rich gas fuel self-preheating injection blast furnace. The system at least comprises a blast furnace; a blowing pipe is arranged on the blast furnace; a heat exchange cooling wall is arranged on the inner side of the blast furnace above the injection pipe; a cooling water pipe is arranged on the side, close to the blast furnace shell, of the heat exchange cooling wall; a heat exchange coil pipe is arranged on the side, far away from the blast furnace shell, of the heat exchange cooling wall; the air inlet end of the heat exchange coil pipe is led out from the side wall of the blast furnace and is communicated with a hydrogen-rich gas fuel supply pipe; and the gas outlet end of the heat exchange coil pipe is led out from the side wall of the blast furnace and is communicated with a hydrogen-rich gas fuel gas inlet pipe of the injection pipe. The hydrogen-rich fuel gas firstly enters the blast furnace body, is preheated to a certain temperature by utilizing waste heat at the middle upper part of the blast furnace body, and then is uniformly injected into the blast furnace body from the injection pipe, so that the consumption of coke and pulverized coal per ton of iron of the blast furnace can be reduced. Meanwhile, the overall temperature of the cooling wall is reduced, and the service life of the heat exchange cooling wall is prolonged.

The invention provides a protective layer for prolonging the service life of a blast furnace cooling wall and a preparation method, and belongs to the field of blast furnace ironmaking. The protective layer for prolonging the service life of the blast furnace cooling wall comprises a base coat, the surface of the blast furnace cooling wall is covered with the base coat, and coating of the base coat is nickel-based alloy powder; the transition layer covers the surface of the priming layer, and a coating of the transition layer comprises nickel-based alloy powder and blast furnace slag powder; the furnace slag layer covers the surface of the transition layer, and a coating of the furnace slag layer comprises blast furnace slag powder and a reinforcing material. The thermal expansion coefficient of each layer is gradually changed through the multi-layer design, the slag layer is prevented from peeling off, the bonding strength of the slag layer is improved, the protective layer prepared through the method is far thicker than a common coating, the situation that the protective layer is completely abraded is not prone to occurring in the abrasion and corrosion environment, the cooling wall is more effectively protected, and the service life of the cooling wall is prolonged. The service life of the blast furnace cooling wall is prolonged.

The utility model provides a combined type cooling wall structure, which comprises a cooling wall body, a plurality of cooling walls and a plurality of cooling walls, the at least two water pipe groups are located in the cooling wall body, each water pipe group comprises a first water pipe and a second water pipe which are adjacently arranged, the first water pipe extends in the length direction of the cooling wall body, and the second water pipe comprises a longitudinal section extending in the length direction of the cooling wall body and a transition section connected with the longitudinal section; a water outlet in the upper end of the second water pipe and a water outlet in the upper end of the first water pipe are adjacent in the length direction of the cooling wall body and are oppositely arranged up and down; the at least one cooling strip is arranged on the hot surface of the cooling wall body, the length direction of the cooling strip is perpendicular to the length direction of the first water pipe, and the two ends of the cooling strip cover the first water pipe or the second water pipe on the outermost side of the cooling wall body. The combined type cooling wall structure can solve the problem that in the prior art, the cooling effect of a cooling wall is not uniform.

The invention discloses a blast furnace pulverized coal electromagnetic preheating system and process, and relates to the technical field of blast furnace ironmaking. The blast furnace pulverized coal electromagnetic preheating system comprises a pulverized coal bin, an injection tank and a mixer, a radial flow guide device is arranged at the inlet end in a rough preheating pipeline, and the radial flow guide device is used for separating materials according to the diameter and guiding the materials to move on the inner wall of the radial rough preheating pipeline; the intermediate heating device is used for forming a heating channel and heating materials moving along the middle of the coarse preheating pipeline, and a dispersing device is arranged at the outlet end of the coarse preheating pipeline and used for dispersing the materials with different particle sizes to different areas and conveying the materials into the fine preheating pipeline. According to the blast furnace pulverized coal electromagnetic preheating system and process, powder moisture is removed through coarse preheating, powder with different particle sizes is guided to be separated and move towards the inner wall of the coarse preheating pipeline, materials with different particle sizes are dispersed to different areas through fine preheating, and the powder reaches the temperature close to an ignition point.

The invention concerns a process for detecting water leaks in smelting furnaces (2; 4) or in metal or alloy treatment plants, comprising the following steps: (i) providing at least one smelting furnace (2; 4), or at least one metal or alloy treatment plant provided with a water cooling system (5) and being connected to a process fume exhaust system; (ii) mixing in the cooling water a tracer chemical which is volatile in the event of water leakage together with the exhaust gases and which is suitable to be detected by an analysis system of the exhaust gases; and (iii) detecting said tracer chemical contained in the exhaust gases by said analysis system comprised in said process fume exhaust plant, wherein said tracer chemical is deuterated water. The invention further refers to a Plant for the production of metals or alloys.

The double-peak countercurrent double-cavity tuyere comprises a tuyere small sleeve body, a first front cavity water chamber is formed in the right end of the tuyere small sleeve body, and a second front cavity water chamber is formed in the position, located on the outer side of the first front cavity water chamber, of the right end of the tuyere small sleeve body. Through the arrangement of the flow guide partition plate, the interior of the flow guide box can be divided into two groups of different water chambers, the time required for cooling water to flow through the interior of the flow guide box is effectively prolonged, meanwhile, through the arrangement of the flow guide partition plate, the multiple groups of communicated water chambers are formed between the flow guide box and the tuyere small sleeve body due to the spiral shape of the flow guide partition plate, and the cooling effect is improved. And cooling water flowing through the first flow guide holes in the flow guide box can be effectively and spirally guided, the time for cooling the tuyere small sleeve body in the flowing process of the cooling water is further prolonged, and therefore the cooling effect on the tuyere small sleeve body is greatly improved.

The invention relates to a tool for mounting a cooling wall of a blast furnace and a using method of the tool, and belongs to the technical field of blast furnace mounting equipment.The tool comprises a bottom plate fixedly provided with a fixing column extending in the vertical direction; the rotary sleeve is rotationally arranged on the fixed column in a sleeving manner; the locking assembly is mounted between the rotating sleeve and the fixed column, and the locking assembly is used for locking the rotating sleeve to the fixed column; the manual telescopic rod is provided with a fixed end and a telescopic end, the fixed end is hinged to the outer wall of the rotating sleeve, the telescopic end is used for abutting against the cooling wall to be installed, the manual telescopic rod is connected with a rotating driving part, and the rotating driving part is used for driving the manual telescopic rod to rotate in the vertical plane; according to the application method, the tool is used for assisting an operator in mounting the cooling wall on the inner wall of the blast furnace. Through the structure, the tool can assist an operator in quickly mounting the cooling wall on the inner wall of the blast furnace, and is simple in structure, convenient to use, very low in manufacturing cost and use cost and higher in use safety.

To provide a construction method of a cooling stave capable of bringing the cooling stave into close contact with an iron shell, and the cooling stave.SOLUTION: The method of installing the cooling stave includes a stave body provided with a cooling pipe through which a cooling fluid flows, a refractory layer formed of a refractory on one surface of the stave body, and a wall portion formed of a refractory on a peripheral edge portion of the refractory layer, and includes a fixing step (step S4) of fixing the stave to the shell of the blast furnace by pressing the wall portion against the shell in a deformable state of the refractory forming the wall portion.SELECTED DRAWING: Figure 1

The invention relates to a method for detecting a water leak in a metallurgical melting furnace. The invention also relates to a device for carrying out the method. In the process, a water leak is detected in a cooling tube or a water tube of a furnace vessel in that a time-resolved measurement of an exhaust gas characteristic, such as the water quantity, at the exhaust gas outlet and a controlled pressure fluctuation, i.e. a variation of the pressure, of the cooling circuit are combined and correlated together. In the event of a leak, the variation of the water pressure leads to a variation of the discharge quantity of the water into the furnace vessel, said discharge quantity correlating chronologically to the variation of the pressure of the cooling circuit. By determining the correlation of the signals, an analysis device can ascertain a relationship based on a water leak.

The invention discloses an integral pouring method and structure of a blast furnace hearth for replacing a cooling wall. A lining body formed by integrally pouring a high-thermal-conductivity amorphous refractory material is directly arranged on the inner side of a furnace shell; a plurality of hole channels are formed in the furnace shell, cooling elements are arranged in the hole channels, one end of each cooling element is embedded into and penetrates through the lining body and is in close contact with the lining body, a cooling wall is omitted, air gap thermal resistance is avoided, the cooling elements are in direct contact with a high-thermal-conductivity refractory material, heat can be quickly and directly transmitted to a cooling system, and the cooling efficiency is greatly improved; a protective slag iron shell is easily formed on the hot surface of the hearth; the overall pouring structure is free of brick joints, and permeation erosion of molten iron and alkali metal is avoided; the high thermal conductivity ensures that the temperature field of the hearth lining is uniformly distributed, the thermal stress is small, and the ring crack risk of a traditional structure is fundamentally eradicated; if abnormal erosion occurs in a local area, online repair can be performed by adopting a press-in technology, so that the maintenance cost is low, and the service life of the first-generation blast furnace is prolonged.

The utility model relates to the technical field of water temperature monitoring, in particular to a blast furnace cooling wall water temperature monitoring device. According to the technical scheme, the temperature probe comprises a pipe ring, a temperature probe and a ball body, the pipe ring is provided with a positioning seat and a base, the base is provided with a sleeve, the bottom end of the sleeve is provided with a ball sleeve, the ball body is rotatably arranged in the ball sleeve, the ball body is provided with a shaft rod, the shaft rod penetrates through the ball sleeve and is rotatably arranged on the positioning seat, and the shaft rod is provided with a rotating shaft. A positioning assembly is arranged at the end of the shaft rod, the temperature probe is inserted and positioned on the sleeve through a base, and the bottom end of the temperature probe penetrates through the ball body. According to the utility model, through cooperation of the structures, the temperature probe can be dismounted without cutting off all pipelines, and the maintenance convenience of the temperature measurement monitoring device is improved.

A blast furnace blower device includes a body, a flow guidance structure and a cooling module. The body is hollow inside. The body includes an inlet area, an outlet nozzle area, and a fuel nozzle area. The fuel nozzle area is located between the outlet nozzle area and the inlet area, and a channel is formed from the inlet area to the outlet nozzle area. The flow guidance structure is deployed continuously or discontinuously along an inner wall of the body. The flow guidance structure is located between the fuel nozzle area and the outlet nozzle area. The flow guidance structure has a nozzle distance range along an axial direction of the body to the outlet nozzle area. The cooling module is located outside the body.

The invention relates to a method for the reduction of a metal oxide-containing material (2), wherein a reducing gas which is obtained using ammonia NH3 is used. The reducing gas is supplied to a reduction reactor (2) containing the metal oxide-containing material, and a top gas is discharged from the reduction reactor. At least one sub-quantity of the top gas is used as components in the preparation of the reducing gas, optionally after the top gas is prepared. A device (1) for the reduction of the metal oxide-containing material (3) comprises a reduction reactor (2), a top gas discharge line (4) for discharging top gas out of the reduction reactor (2), at least one supply line for an ammonia contribution (7), a preparation system (6) for preparing the reducing gas, at least one supply line for the ammonia contribution (7) leading into the preparation system, and a feed line (8) for feeding the reducing gas and / or a precursor of the reducing gas to the reduction reactor (2), wherein the top gas discharge line (5) leads into the preparation system (6).

The utility model relates to the technical field of ferrous metallurgy, in particular to a blast furnace after-furnace water treatment device. According to the technical scheme, the device comprises a box body, an embedding box and a flow dividing box, a water storage box is fixed to the bottom end in the box body, a standby box is fixed to an opening of the box body, a pump body is fixed to one side of the upper end of the standby box, a liquid outlet of the pump body communicates with the water storage box through a guide pipe, and the flow dividing box is fixed to the lower end in the box body; a two-way valve pipe is arranged in the middle of the flow dividing box, the two ends of the two-way valve pipe are communicated with the interior of the standby box and the interior of the water storage box respectively, the embedded box is installed at the top end of the interior of the box body in an embedded mode, a cooling coil pipe is arranged between the embedded box and the flow dividing box, heat dissipation boxes are fixed to the two sides of the box body, and air outlet boxes are installed on the two sides of the box body in an embedded mode. The cooling device is provided with a standby water supply mechanism, so that normal supply of cooling water and dual-channel heat dissipation are ensured, and the cooling quality of the cooling water is ensured.

The invention relates to the technical field of blast furnace water-cooled walls, in particular to a metallurgical compounded copper-steel bimetal blast furnace water-cooled copper wall, which comprises a cooling wall, a water channel, a water inlet pipe and the like, the cooling wall consists of a hot surface and a cold surface, the hot surface is made of copper material, the cold surface is made of steel material, and the water channel for circulating cooling liquid is arranged in the cooling wall. A water inlet pipe and a water outlet pipe which are communicated with the water channel are arranged on the cold face, the hot face made of copper and the cold face made of steel are composited through metallurgy, and the combination faces are completely composited. According to the method, 100% bonding of the bonding surfaces of the copper plate blank and the steel plate blank is achieved in a metallurgical compounding mode, the bonding strength is high, the bonding surfaces cannot be separated in the using process of a blast furnace, and the service life is prolonged; through the copper-steel double-metal compounding mode, the use amount of copper is reduced, the manufacturing cost is reduced, the overall strength of the product is improved, and the product is not prone to being cracked up and deformed in the transportation, hoisting and using processes.

The utility model discloses a low-temperature waste gas recovery sealing device for a blast furnace airtight box, which relates to the technical field of blast furnace smelting and comprises a cooling water tank, a gas storage tank and an airtight box, an air inlet pipe is arranged on one side of the airtight box; the system further comprises a public waste gas pipeline which is provided with a waste gas recovery pipe. The waste gas recovery pipe sequentially communicates with the cooling water tank, the gas storage tank and the gas inlet pipe; a booster pump is arranged on the waste gas recovery pipe at the bottom of the cooling water tank; an oxygen detector is arranged at the bottom of the booster pump; a first gas stop valve is arranged on the waste gas recovery pipe at the top of the cooling water tank. According to the device, low-temperature waste gas generated by the hot blast stove in the public waste gas pipeline can be recycled, the recycled inert gas is used for carrying out airtight cooling on the airtight box, original nitrogen is replaced, energy consumption is reduced, the energy utilization efficiency is improved, and the nitrogen cost of blast furnace production is saved; and meanwhile, unorganized carbon emission of a blast furnace system is reduced, and bad influences on the environment are avoided.

The invention discloses an efficient and energy-saving furnace front water cooling plate cooling system. The furnace-front water-cooling plate cooling system is characterized by comprising a circulating water tank, a plurality of groups of water-cooling plates, a water return tank and a concentrated brine tank which are connected through pipelines. Through the application of the system, the peripheral temperature of the iron notch can be reduced to 70-90 DEG C from 100-120 DEG C, and the temperature reduction amplitude reaches 30%. The damage to peripheral equipment of the iron notch caused by high temperature can be greatly avoided; meanwhile, the temperature above the iron notch is reduced to about 120 DEG C from 200-300 DEG C, a steel structure above the iron notch can be well protected, deformation caused by high temperature is avoided, and the bearing capacity of the steel structure meets the weight requirement of tuyere equipment for replacing a mechanical forklift and a sleeve replacing machine. By the adoption of the cooling system, water resources can be utilized to the maximum extent, and the effects of energy conservation and emission reduction are achieved.

The utility model relates to the technical field of slag runner water cooling, in particular to a blast furnace casting house slag runner water cooling device which comprises a plurality of water cooling plates used for cooling the two side portions and the bottom of a slag runner in a water cooling mode. The water cooling plate comprises a shell, a cooling channel which is arranged in the shell and enables cooling water to flow back and forth in the shell, a water inlet communicated with one end of the cooling channel, and a water outlet communicated with the other end of the cooling channel. The plurality of water cooling plates are spliced and fixed together through connecting structures; the water-cooling plate has the beneficial effects that in actual use, the shell is attached to the side part and the bottom of the slag runner, namely, the two side parts and the bottom of the slag runner are cooled, so that the cooling effect of the water-cooling plate on the slag runner is ensured; meanwhile, the multiple water cooling plates are spliced together to form a pouring frame, pouring can be directly carried out on the water cooling plates to form the slag runner, the slag runner and the water cooling plates are tightly combined, heat conduction between the slag runner and the water cooling plates is facilitated, and the cooling effect is improved.

The invention relates to the technical field of blast furnace ironmaking, in particular to a leak detection method for rotational flow degassing of a blast furnace soft water cooling system, which comprises the following steps of: 1, testing the concentration of CO gas exhausted by a vertical rotational flow degassing tank in the blast furnace soft water cooling system; 2, when the concentration of CO gas exhausted by the vertical cyclone degassing tank is larger than 11%, a water return valve is closed firstly, then a water inlet valve is closed, and then the pressure in a pipeline between the water return valve and the water inlet valve is monitored; 3, the pipelines with internal leakage or external leakage are changed to be communicated with industrial water, the other pipelines are changed to be spanning pipes, the pipelines with internal leakage or external leakage are spanned, and soft water cooling is recovered; and 4, testing the concentration of the CO gas discharged by the vertical cyclone degassing tank in the blast furnace soft water cooling system again. Cooling water and blast furnace gas in a blast furnace soft water cooling system are separated by using the vertical cyclone degassing tank, so that the separation efficiency of the blast furnace gas is improved; the pipeline with internal leakage or external leakage is changed to be communicated with industrial water, so that the cooling efficiency of other branch pipes without water leakage in the cooling wall is ensured.

The present invention relates to a cooling wall water pipe sealing device and a sealing method, wherein the cooling wall water pipe sealing device includes a sealing ring, a second sealing body and a first sealing body; the rear end of the first sealing body is seal-welded to the pipe mouth of the cooling wall water inlet pipe, and the front end outer wall of the first sealing body is provided with an external thread section; the second sealing body includes a second sealing cylinder coaxially arranged with the first sealing cylinder, and a connecting cylinder sleeved and fixed on the outside of the second sealing cylinder, the sealing ring is located between the first sealing cylinder and the second sealing cylinder, and the two end faces of the sealing ring are in sealing contact with the first sealing cylinder and the second sealing cylinder respectively. The present invention improves the adaptability to the waveform of the corrugated pipe by clamping the sealing ring in the trough of the corrugated pipe, thereby improving the fit between the corrugated pipe and the sealing ring and ensuring the sealing effect; the end of the second sealing cylinder is connected to the cooling water supply pipe, which greatly improves the convenience of connection and ensures that the cooling water flows into the water inlet end of the corrugated pipe through the inner hole of the second sealing cylinder.

The tuyere medium sleeve with the protection enhancing function comprises a cylindrical body, and the front end and the rear end of the body are used for being connected with a small tuyere sleeve and a large tuyere sleeve correspondingly to form a hollow sleeve body used for clamping an air supply channel; a cooling cavity is formed in the body wall of the body, and a side grouting opening penetrating through the body wall is formed in the thickness direction of the body wall. A grouting channel penetrating from the rear end to the front end is formed in the length direction of the body wall, a grouting outlet is formed towards the surface of the outer wall of the tuyere small sleeve, and the grouting channel can be repeatedly drilled and dredged so that slurry can flow through the grouting channel many times and can be repeatedly used. According to the tuyere medium sleeve, the grouting channel from the rear end to the front end is designed, so that the grouting material can form a protection layer on the outer wall of the tuyere small sleeve, the protection effect of the tuyere small sleeve is enhanced, and the wear resistance and erosion resistance are improved. The grouting channel can be dredged by drilling, multiple grouting operations are allowed, the maintainability of the structure is improved, and the service life is prolonged.

The invention provides a blast-furnace tuyere accident water circulation cooling recovery device and a blast-furnace tuyere accident water circulation cooling recovery method. The blast furnace tuyere accident water circulation cooling recovery device comprises a first-stage sedimentation water tank, a second-stage sedimentation water tank and a third-stage sedimentation water tank, at least two water outlets are formed in the first-stage sedimentation water tank in the height direction, and all the water outlets of the first-stage sedimentation water tank are communicated with a main water inlet pipeline in the second-stage sedimentation water tank through branch pipelines; a pressurizing spray head is arranged on a water outlet of the main water inlet pipeline in the secondary sedimentation water tank, an impeller is arranged in the secondary sedimentation water tank and is positioned below the pressurizing spray head, and a precipitant spray head is arranged above the secondary sedimentation water tank; and drain outlets are formed in the bottoms of the first-stage sedimentation water tank, the second-stage sedimentation water tank and the third-stage sedimentation water tank. According to the blast-furnace tuyere accident water circulation cooling recovery device, rapid purification and self-recovery of accident water which is large in flow fluctuation and contains impurities are achieved, and the purposes of saving energy and recycling waste water are achieved.

The invention relates to a microchannel single-cavity tuyere small sleeve and a blast furnace comprising the microchannel single-cavity tuyere small sleeve, the microchannel single-cavity tuyere small sleeve comprises a small sleeve body, the small sleeve body is provided with a heat exchange cavity and a cooling cavity located on the periphery of the heat exchange cavity, and the heat exchange cavity penetrates through the small sleeve body in the length direction; the cooling cavity comprises a first cavity body and a second cavity body which are distributed in the length direction. The partition plate is arranged in the second cavity and surrounds the heat exchange cavity so as to divide the second cavity into a third cavity and a fourth cavity surrounding the radial outer side of the third cavity, and the sides, away from the first cavity, of the third cavity and the fourth cavity communicate with each other; and the at least one first cooling liquid pipe is arranged in the first cavity, the first end of the first cooling liquid pipe communicates with one of the third cavity and the fourth cavity, and the second end of the first cooling liquid pipe penetrates out of the side wall, away from the second cavity, of the first cavity. The temperature of the micro-channel single-cavity tuyere small sleeve is reduced, and damage caused by too high temperature is avoided.

The invention relates to the technical field of blast furnace machining, in particular to a water-cooling fluid director suitable for a blast furnace slag notch, which comprises a water-cooling fluid director body, the water-cooling fluid director body comprises a front end part, a rear end part and a middle inclined part, and a fluid guide cavity is arranged in the water-cooling fluid director body; the rear end section is connected with the discharging end of the slag blocking machine, and a first water cooling structure is arranged on the rear end section; the front end section is connected with a blast furnace slag hole; the two ends of the middle inclined section are connected with the rear end section and the front end section correspondingly, a second water cooling structure is arranged on the middle inclined section, and the first water cooling structure communicates with the second water cooling structure; the water-cooling fluid director structure capable of replacing a mud sleeve at the slag hole of the blast furnace is provided, the service life of the water-cooling fluid director structure is more than 30 days, mud sleeve mud is not consumed any more, the labor cost for manufacturing the mud sleeve per shift is reduced, the labor intensity of workers is reduced, and the personal safety of the workers is improved.

This invention provides an energy-saving blast furnace gas temperature regulation device, applied at the blast furnace gas outlet. It includes a gravity dust collector, a radiator, a dust collection bag, and a turbine. The gravity dust collector is connected at one end to the blast furnace gas outlet and at the other end to the radiator, used for preliminary removal of large particulate impurities from the blast furnace gas. The radiator is connected at one end to the gravity dust collector and at the other end to the dust collection bag, used to control the temperature of the blast furnace gas and prevent damage to the dust collection bag. The dust collection bag is connected at one end to the radiator and at the other end to the turbine, used to remove impurities from the blast furnace gas, completing the purification process. The turbine, connected to the dust collection bag, converts the pressure and thermal energy of the blast furnace gas into rotational mechanical energy to drive a generator. This invention effectively regulates the temperature of the blast furnace gas, simultaneously treating the gas and enabling its recycling.

An embodiment of the present invention discloses an installation and construction method for blast furnace body cooling equipment, comprising the following steps: Step 1: When the blast furnace shell is installed to the lower part of the furnace body, a protective shed is installed at the maximum diameter position of the upper part of the furnace belly belt, and while the furnace shell continues to be installed above the furnace body, the four sections of cooling walls from the hearth to below the tuyere begin to be installed; Step 2: After the furnace shell is installed, all remaining cooling walls and throat steel bricks are installed. The cooling walls installed by the present invention are firmly installed, densely installed inside the furnace shell, can work continuously for a long time, work stably, can continuously cool the furnace shell of the blast furnace, and improve the service life of the blast furnace.

A method for the reduction of a metal oxide-containing material in which a reducing gas that is obtained using ammonia (NH3) is used. The reducing gas is supplied to a reduction reactor containing the metal oxide-containing material, and a top gas is discharged from the reduction reactor. At least one sub-quantity of the top gas is used as components in the preparation of the reducing gas, optionally after the top gas is prepared. A device for the reduction of the metal oxide-containing material that includes a reduction reactor, a top gas discharge line for discharging top gas, a supply line for an ammonia contribution, a preparation system for preparing the reducing gas, a supply line for the ammonia contribution leading into the preparation system, and a feed line for feeding the reducing gas and / or a precursor of the reducing gas to the reduction reactor.