Pig mold of pig machine

The invention discloses a pig mold of a pig machine. The material of the pig mold is characterized in that 0.02-0.2 weight percent of La and 0.02-0.1 weight percent of Ce are added to cast steel ZG270-500, and rare-earth elements are added to further improve the mechanical property of the cast steel, and meanwhile, the corrosion resisting property and the heat resistance are also improved; a large arc molding cavity structure is adopted as a pig mold structure, wherein the wall thickness of the molding cavity of the pig mold is 30-45mm, the radius R of the large arc of the longitudinal outer wall of the molding cavity is 135-165mm, and the radius r of the large arc of the longitudinal inner wall is 90-115mm. The offset of the wall thickness of the molding cavity of the pig mold is +/-3mm (not including the edge and the position of partition ribs of the pig mold), and the molding cavity smoothly transits, which can avoid thermal stress concentration to high limit and relieve thermal fatigue ...

High-efficiency long-life safety rolling-wheel fixed casting machine

The invention discloses a high-efficiency long-life safety rolling-wheel fixed casting machine, comprising a transmission device, a molten iron trough, a spray cooling device, a fixed chute, an iron ore removing device, a slurry spraying device, an iron mould drying device and a residual iron collecting device. A complete machine is arranged between a molten iron tank and an iron stacked field. The high-efficiency long-life safety rolling-wheel fixed casting machine is characterized in that: a dovetailed molten iron trough is adopted, so as to lead the molten iron to uniformly flow in an iron cast mold which moves slowly, and molten iron splashing is reduced; the iron cast mold is made of special cast-steel material, and the structure is optimally designed, the life of the iron cast mold is increased by 3-5 times compared with the traditional iron cast mold; the quick-change slurry spraying device is adopted, the problem that the blocked spraying head is difficult to maintain is solved, ...

Real-time baking temperature monitoring device of sand mold

The invention discloses a real-time baking temperature monitoring device of sand mold. The device comprises a thermocouple wire (3) and a temperature measuring probe (4), wherein the temperature measuring probe (4) is arranged in the sand mold, one end of the thermocouple wire (3) is electrically connected with the temperature measuring probe (4), and the other end of the thermocouple wire (3) is connected with a control module (6) via a metal lead (7). The control module (6) converts and transmits data and supplies power, and is electrically connected with a data emission antenna (5). The real-time baking temperature monitoring device can monitor the temperature of the sand mold in real time, and can timely and accurately obtain the temperature of the sand mold in the baking process.

Adjustable expanded slag bead chute

The invention relates to an adjustable expanded slag bead chute, in particular to processing equipment for dry granulation of blast furnace slag. The invention aims to provide the adjustable expanded slag bead chute which has simple structure, is convenient to operate and can avoid slag wool and control the volume weight and grain size of the slag beads. The chute comprises an upper expansion chute and a lower expansion chute, wherein the upper expansion chute is fixedly installed below a blast furnace slag channel in a downward inclining manner; the width of the upper expansion chute is more than that of the blast furnace slag channel; the lower expansion chute is arranged below the outlet of the upper expansion chute in a downward inclining manner and is installed on a movable trolley by a tilt angle adjusting device; and expansion chute cooling systems are arranged in the bodies of the upper expansion chute and the lower expansion chute.

Method for district cooling of blast furnace during blast furnace dissection

The invention provides a method for district cooling of a blast furnace during blast furnace dissection, belonging to the technical field of ironmaking. The method comprises the following steps: calibrating a district cooling datum line; drilling a cooling medium filling opening on the datum line; estimating the heat produced in unit time after the blast furnace blows out as well as cooling waterflow required in cooling the blast furnace; carrying out district cooling; and finishing district cooling. Compared with the background technology, the method combines a blast furnace smelting technology with the need of blast furnace dissection to formulate a special blast furnace cooling method during blast furnace dissection, thus the method can truly keep information in the blast furnace smelting process, and is favourable for knowing the furnace burden distribution state, the furnace burden granularity variation, the furnace burden reducing process, the slag and molten iron distribution state ...

Dissection method of longitudinal section of salamander of blast furnace hearth

The invention relates to a dissection method of the longitudinal section of a salamander of a blast furnace hearth, belonging to the technical field of iron making and comprising the following steps of: calibrating the measuring center of the circle of the upper surface of the salamander and the longitudinal section of the salamander; drilling a hole on the contour line of the longitudinal section of the salamander; manufacturing a closed-angle groove on the hole; expanding the closed-angle groove by using a wedge-shaped tooth rake; and dissecting the longitudinal section of the salamander, wherein the wedge-shaped tooth rake comprises a base plate and rake teeth. The invention is characterized in that the base plate is in a strip shape; one surface of the base plate is evenly fixed with the rake teeth; and the rake teeth are in wedge shapes. The invention has the advantages that the salamander of a blast furnace is dissected by a physical mode, thereby avoiding the problems brought by ...

High-efficiency long-life safety rolling-wheel fixed casting machine

The invention discloses a high-efficiency long-life safety rolling-wheel fixed casting machine, comprising a transmission device, a molten iron trough, a spray cooling device, a fixed chute, an iron ore removing device, a slurry spraying device, an iron mould drying device and a residual iron collecting device. A complete machine is arranged between a molten iron tank and an iron stacked field. The high-efficiency long-life safety rolling-wheel fixed casting machine is characterized in that: a dovetailed molten iron trough is adopted, so as to lead the molten iron to uniformly flow in an ironcast mold which moves slowly, and molten iron splashing is reduced; the iron cast mold is made of special cast-steel material, and the structure is optimally designed, the life of the iron cast mold is increased by 3-5 times compared with the traditional iron cast mold; the quick-change slurry spraying device is adopted, the problem that the blocked spraying head is difficult to maintain is solved, ...

Waste heat recovery device for expanded slag balls

The invention provides a waste heat recovery device for expanded slag balls, and relates to blast-furnace slag disposal equipment for dry granulation and waste heat recovery technology of blast-furnace slag, which has simple structure and high heat exchange efficiency. The waste heat recovery device for the expanded slag balls comprises a channel structure and a heat exchange system, wherein, the channel structure is composed of an upper wall, a front side wall, a rear side wall and a lower wall; the upper wall is arranged above the lower wall; the front side wall and the rear side wall are longitudinally arranged at the front side and the rear side of the lower wall respectively; a vibration device is arranged at the bottom of the lower wall; the vibration device drives the lower wall to vibrate up and down; and the heat exchange system at least comprises a heat exchange coil arranged in the lower wall.

Casting method of steel brick of cast steel furnace throat with water cooling

The invention relates to a casting method of a steel brick of a cast steel furnace throat with water cooling, which adopts a cast steel material to cast a steel brick base body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel; putting the cooling water pipe into a casting model and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the steel brick base body, and casting the middle part of the cooling water pipe into the steel brick base body; leading the casting model to be horizontal, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as to form sequential solidification; and cooling and disassembling ...

Casting method of cast steel rotary furnace flue

The invention relates to a casting method of a cast steel rotary furnace flue, which adopts a cast steel to cast a base body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel for casting steel; putting the cooling water pipe into a casting model and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the base body; leading the casting model to be horizontal in the modeling process, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as to form sequential solidification; and cooling and disassembling the model. The casting method can effectively avoid the cooling water pipe from being penetrated in a ...

Method for simulation test of influence of alkali metal on coke degradation

A method for a simulation test of the influence of alkali metal on coke degradation belongs to the field of blast furnace ironmaking technology. Aactive carbon powder and alkali carbonate powder are mixed and added into a corundum crucible; the crucible is placed on the upper part of a high-alumina ball at the bottom of a high temperature reaction vessel; a porous permeable corundum gasket is placed on the corundum crucible; three high temperature resistant corundum branch pipes with a height of 30-60 mm are placed on the gasket; a permeable gasket is placed above the corundum branch pipes; acoke sample is placed on the permeable gasket; after the sample is in place, the sample is heated and argon is pumped in to discharge air in the reaction vessel; when the temperature in the reaction vessel reaches 1200 DEG C, alkali metal vapor is generated; the sample is cooled to room temperature with the protection of argon, and the coke adsorbed with alkali vapor is inspected and analyzed. The advantages ...

Casting method of cast steel cooling wall

The invention relates to a casting method of a cast steel cooling wall, which adopts a cast steel material to cast a steel brick body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel; putting the cooling water pipe into a casting model and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the steel brick body, and casting the middle part of the cooling water pipe into the steel brick body; leading the casting model to be horizontal in the process of casting, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as to form sequential solidification; and cooling and disassembling the model. The casting ...

High-temperature low-oxygen internal-combustion-type air heating furnace

The invention relates to a high-temperature low-oxygen internal-combustion-type air heating furnace belonging to the technical field of air heating furnaces and comprising a cold air inlet, a furnace grate, columns, grid blocks, a regenerative chamber, a furnace liner, a furnace shell, a combustion chamber, an arc top, a hot air outlet, a flue gas outlet and a high-temperature low-oxygen combustor. The high-temperature low-oxygen internal-combustion-type air heating furnace is characterized in that the high-temperature low-oxygen combustor is arranged at the bottom of the air heating furnace and comprises an air gas pre-combustion chamber, two gas inlets, circular tracks, nozzles and two air inlets, and each inlet, circular track and nozzle comprise 1-20 layers. Combustion-supporting air over 800 DEG C is preheated by adopting a high-temperature preheating technology, combustion products are sucked by fractional combustion and high-temperature airflows in the high-temperature low-oxygen ...

Waste heat recovery device for expanded slag balls

Casting method of cast steel cooling plate

The invention relates to a casting method of a cast steel cooling plate, which adopts a cast steel material to cast a cooling plate base body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel for casting steel; putting the cooling water pipe into a casting model, sheathing a pipe sleeve on the coolingwater pipe and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the cooling plate base body, and casting the middle part of the cooling water pipe into the cooling plate base body; leading the casting model to be horizontal in the modeling process, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as ...

Cross-shaped temperature measuring device capable of being replaced online and having early warning function

The invention discloses a cross-shaped temperature measuring device capable of being replaced online and having an early warning function. The cross-shaped temperature measuring device comprises a shell body, the interior of the shell body is fixedly parallelly provided with a plurality of mutual-independence sealable thermocouple channels, and the interior of each thermocouple channel is provided with a wireless thermocouple; each wireless thermocouple comprises a temperature measuring probe, a thermocouple wire, an A/D conversion chip and a data transmitting antenna which are connected with one another successively, wherein the A/D conversion chip and the data transmitting antenna are arranged in a nonmetal protective outer shell, and the A/D conversion chip and the thermocouple wire are in signal connection through a metal guide wire; the tail end of the interior of each thermocouple channel is provided with a thermocouple sealing protective sleeve for sealing; each temperature measuring ...

Bi-metal reinforcement cooling plate production method of internally installing copper pipe in copper matrix

The invention discloses a bi-metal reinforcement cooling plate production method of internally installing a copper pipe in a copper matrix. The method comprises the following steps that firstly, oxygen-free copper is used as a matrix, and a rolled copper pipe is cast in the matrix; secondly, an external cast steel plate part of the copper matrix is processed. According to the method, the cooling capacity of a cooling plate can be improved, the usage amount of cooling water is thus reduced, the production efficiency is improved, and the production cost is also reduced.

Pig mold of pig machine

The invention discloses a pig mold of a pig machine. The material of the pig mold is characterized in that 0.02-0.2 weight percent of La and 0.02-0.1 weight percent of Ce are added to cast steel ZG270-500, and rare-earth elements are added to further improve the mechanical property of the cast steel, and meanwhile, the corrosion resisting property and the heat resistance are also improved; a large arc molding cavity structure is adopted as a pig mold structure, wherein the wall thickness of the molding cavity of the pig mold is 30-45mm, the radius R of the large arc of the longitudinal outer wall of the molding cavity is 135-165mm, and the radius r of the large arc of the longitudinal inner wall is 90-115mm. The offset of the wall thickness of the molding cavity of the pig mold is +/-3mm (not including the edge and the position of partition ribs of the pig mold), and the molding cavity smoothly transits, which can avoid thermal stress concentration to high limit and relieve thermal fatigue ...

Casting method of steel brick of cast steel furnace throat with water cooling

The invention relates to a casting method of a steel brick of a cast steel furnace throat with water cooling, which adopts a cast steel material to cast a steel brick base body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel; putting the cooling water pipe into a casting model and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the steel brick base body, and casting the middle part of the cooling water pipe into the steel brick base body; leading the casting model to be horizontal, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as to form sequential solidification; and cooling and disassembling ...

Casting method of cast steel cooling wall

The invention relates to a casting method of a cast steel cooling wall, which adopts a cast steel material to cast a steel brick body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel; putting the cooling water pipe into a casting model and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the steel brick body, and casting the middle part of the cooling water pipe into the steel brick body; leadingthe casting model to be horizontal in the process of casting, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as to form sequential solidification; and cooling and disassembling the model. The casting ...

Multifunctional continuous casting water model test device

The invention discloses a multifunctional continuous casting water model test device which comprises a bracket and a water tank arranged on the bracket, wherein the water tank consists of a water tank A, a water tank B and a water tank C; the water tank A, the water tank B and the water C are communicated with each other through a tee joint; the tee joint is provided with a control valve of the water tanks A and C and a control valve of the water tanks B and C; the water tank C is communicated with a simulation container arranged at a lower end through a bottom water outlet; the bottom of thesimulation container is provided with a water outlet which is connected with a collecting pipe through a pipeline; the collecting pipe is connected with a water pump; the water pump is connected withthe water tank A and the water tank B through a water inlet pipe respectively; and the water pipe is provided with a water inlet control valve of the water tank A and a water inlet control valve of the water ...

Three-dimensional unstable state monitoring and abnormity diagnosis and maintenance system of blast furnace hearth

The invention relates to a three-dimensional unstable state monitoring and abnormity diagnosis and maintenance system of a blast furnace hearth, belonging to the technical field of online monitoring, diagnosis, prewarning and maintenance of the blast furnace. The three-dimensional unstable state monitoring and abnormity diagnosis and maintenance system of the blast furnace hearth comprises a data acquisition module, a data filtering module, a hearth and furnace bottom corrosion and accretion calculation module, an abnormality diagnosis module, a prewarning displaying module and a hearth-guiding and maintaining module. Water temperature of a cooling wall of the hearth and galvanic couple temperature of a furnace body can be collected and filtered in real time; by combining the two data together and using pro and con questions of the heat transmission science in combination with the standard of abnormity diagnosis, the influence of the abnormity possibly occurring in the production of the ...

High-temperature low-oxygen external combustion stove

The invention relates to a high-temperature low-oxygen external combustion stove, belonging to the technical field of hot-blast stoves. The high-temperature low-oxygen external combustion stove comprises a cold air inlet, a grate, a supporting column, checker bricks, a heat accumulation chamber, a stove lining, a stove shell, a high-temperature low-oxygen combustor, a combustion chamber, an arch crown, a hot air outlet and a smoke outlet, wherein the combustion chamber and the heat accumulation chamber of the external combustion stove are respectively positioned in two independent cylindrical shells; the combustion chamber is connected with the heat accumulation chamber through a cylindrical channel in the space of the arch crown; the high-temperature low-oxygen combustor for fractional combustion is arranged at the bottom of the combustion chamber; the high-temperature low-oxygen combustor comprises two groups of gas inlets, loops and spouts, two groups of air inlets, loops and spouts, ...

Casting method of electric furnace water cooling cast steel furnace cover

The invention relates to a casting method of electric furnace water cooling cast steel furnace cover, which adopts a cast steel material to cast a base body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel for casting steel; putting the cooling water pipe into a casting model and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the base body, casting the middle part of the cooling water pipe into the base body and leading the two ends thereof to extend from the base body; leading the casting model to be horizontal when in modeling, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as to form sequential ...

Dry granulation and afterheat recovery system of blast-furnace slag

The invention discloses a dry granulation and afterheat recovery system of blast-furnace slag and relates to a blast-furnace slag treatment system, aiming to provide a dry granulation and afterheat recovery system of blast-furnace slag, which has the advantages of low energy consumption, low water consumption, low harmful gas emission, high afterheat recovery rate and stable running. The dry granulation and afterheat recovery system of the blast-furnace slag comprises a tunable swelling slag bead chute, a swelling slag bead throwing roller and a swelling slag bead afterheat recovery device, wherein the tunable swelling slag bead chute comprises an upper swelling slot and a lower swelling slot; the swelling slag bead throwing roller comprises a roller body with a power device; the swelling slag bead afterheat recovery device comprises a channel structure and a heat exchange system, and the channel structure comprises a top wall, a front side wall, a rear side wall and a bottom wall; the ...

Casting method of cast steel cooling plate

The invention relates to a casting method of a cast steel cooling plate, which adopts a cast steel material to cast a cooling plate base body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel for casting steel; putting the cooling water pipe into a casting model, sheathing a pipe sleeve on the cooling water pipe and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the cooling plate base body, and casting the middle part of the cooling water pipe into the cooling plate base body; leading the casting model to be horizontal in the modeling process, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so ...

Composite solid cooling medium and preparation method thereof

The invention relates to a composite solid cooling medium and a preparation method thereof. The composite solid cooling medium comprises 45 to 47 percent of Cr2O3, 1 to 2 percent of SiO2, 0.5 to 1 percent of CaO, 20 to 30 percent of FeO, 10 to 15 percent of MgO, 10 to 20 percent of AL2O3, and the balance being carbon powder with the particle size between 70 and 100 meshes. The medium has the advantages of effectively preventing a cooling water pipe from being melted through in the casting process, preventing air gaps from being produced between a matrix and the cooling water pipe, preventing the cooling water pipe from being remelted and recrystallized in the casting process to avoid destroying the prior rolling performance of the cooling water pipe, accurately realizing the slight melting of the outer surface of the cooling water pipe, solving the problems of melting the cooling water pipe through and oxidizing the inner surface of the cooling water pipe in the casting process, saving ...

High-temperature low-oxygen top-combustion-type air heating furnace

The invention relates to a high-temperature low-oxygen top-combustion-type air heating furnace belonging to the technical field of air heating furnaces and comprising a cold air inlet, a furnace grate, columns, grid blocks, a regenerative chamber, a furnace liner, a furnace shell, a high-temperature low-oxygen combustor, a combustion chamber, an arc top, a hot air outlet and a flue gas outlet. The high-temperature low-oxygen top-combustion-type air heating furnace is characterized in that the high-temperature low-oxygen combustor is arranged at the upper part of the air heating furnace and comprises two gas inlets, circular tracks, nozzles, two air inlets and hollow gas pre-combustion chambers, each inlet, circular track and nozzle comprise 1-20 layers, combustion-supporting air over 800 DEG C sucks combustion products by fractional combustion and high-temperature airflows in the high-temperature low-oxygen combustor, and the oxygen volume density of a reaction area is diluted to realize ...

Casting method of cast steel rotary furnace flue

The invention relates to a casting method of a cast steel rotary furnace flue, which adopts a cast steel to cast a base body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel for casting steel; putting the cooling water pipe into a casting model and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the base body; leading the casting model to be horizontal in the modeling process, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as to form sequential solidification; and cooling and disassembling the model. The casting method can effectively avoid the cooling water pipe from being penetrated in a ...

Dry method granulating and waste heat recovering process of blast-furnace slag

The invention discloses a dry method granulating and waste heat recovering process of blast-furnace slag, relating to a treatment process of the blast-furnace slag and aiming at providing the dry method granulating and waste heat recovering process of the blast-furnace slag, which has low energy consumption, low water consumption, low emission of harmful gas and high waste heat recovery rate. The dry method granulating and waste heat recovering process of the blast-furnace slag comprises the following steps of: (1) discharging the blast-furnace slag from a blast furnace, reducing the thickness of a slag layer and introducing less amount of water so as to allow high-temperature furnace slag to fully contact with the air to quickly expand, cool and form irregular slag beads; (2) quickly throwing the irregular slag beads in a cast way so as to be cooled in the air and form solid granules containing gas; (3) allowing the solid granules to fully contact with a heat exchanger and reducing the ...

Method for district cooling of blast furnace during blast furnace dissection

The invention provides a method for district cooling of a blast furnace during blast furnace dissection, belonging to the technical field of ironmaking. The method comprises the following steps: calibrating a district cooling datum line; drilling a cooling medium filling opening on the datum line; estimating the heat produced in unit time after the blast furnace blows out as well as cooling water flow required in cooling the blast furnace; carrying out district cooling; and finishing district cooling. Compared with the background technology, the method combines a blast furnace smelting technology with the need of blast furnace dissection to formulate a special blast furnace cooling method during blast furnace dissection, thus the method can truly keep information in the blast furnace smelting process, and is favourable for knowing the furnace burden distribution state, the furnace burden granularity variation, the furnace burden reducing process, the slag and molten iron distribution state ...

Buffering splash-protection dovetail molten iron trough of pig machine

The invention discloses a buffering splash-protection dovetail molten iron trough of a pig machine. The trough is designed into two sections of lap joint type dovetail structures and comprises a head buffering molten iron holding slot, a middle transition molten iron trough and a tail dovetail molten iron nozzle. The buffering splash-protection dovetail molten iron trough is integrally arranged between a molten iron tank of the pig machine and the upper chain belt of a driven wheel. Molten iron is cast to the head buffering molten iron holding slot through the molten iron tank and forms a molten bath, thereby relieving the impact of the molten iron. The middle transition molten iron trough buffers the flow of the molten iron twice, and the molten iron and the chain belt forms a 6-10 degree angle of inclination, and the even flow distribution of the molten iron enables the molten iron to evenly flow into a pig mold in a thin and wide waterfall shape. Compared with conventional integral molten ...

Dissection method of longitudinal section of salamander of blast furnace hearth

The invention relates to a dissection method of the longitudinal section of a salamander of a blast furnace hearth, belonging to the technical field of iron making and comprising the following steps of: calibrating the measuring center of the circle of the upper surface of the salamander and the longitudinal section of the salamander; drilling a hole on the contour line of the longitudinal section of the salamander; manufacturing a closed-angle groove on the hole; expanding the closed-angle groove by using a wedge-shaped tooth rake; and dissecting the longitudinal section of the salamander, wherein the wedge-shaped tooth rake comprises a base plate and rake teeth. The invention is characterized in that the base plate is in a strip shape; one surface of the base plate is evenly fixed with the rake teeth; and the rake teeth are in wedge shapes. The invention has the advantages that the salamander of a blast furnace is dissected by a physical mode, thereby avoiding the problems brought by ...

Production method of slag runner cooler

The invention discloses a production method of a slag runner cooler. The production method includes the following steps that a rolled steel tube cooling water tube is cast in a cooling plate base body, a cast steel plate is cast, the external cast steel plate is arranged on a combination of the cooling plate base body and the cooling water tube, slagging agents and ferrosilicon blocks are added to liquid copper, the cooling water tube is placed in a pouring model, liquid cold state media and composite solid cooling media pass the cooling water tube, the liquid copper is poured onto the cooling plate base body, and the middle of the cooling water tube is poured in the base body. According to the production method, deformation or local melting of the cooling water tube in the casting process can be effectively avoided, an air gap is prevented from forming between the cooling plate base body and the cooling water tube, perfect remelting and perfect recrystallization are avoided, slight melting ...

Method for producing double-metal reinforced cooling wall of copper base body with steel pipe internally arranged

The invention discloses a method for producing a double-metal reinforced cooling wall of a copper base body with a steel pipe internally arranged. The method comprises the following steps that firstly, oxygen-free copper serves as the base body, and the rolled steel pipe is cast in the base body; secondly, a cast steel plate portion arranged outside the copper base body is machined; and thirdly, the copper base with the steel pipe cast in and the cast steel plate portion arranged outside the copper base body are assembled. According to the method, the cooling capacity of the cooling wall can be improved, and then, the use amount of cooling water can be reduced; and the production cost can be reduced while the production efficiency is improved.

High-temperature low-oxygen top-combustion-type air heating furnace

The invention relates to a high-temperature low-oxygen top-combustion-type air heating furnace belonging to the technical field of air heating furnaces and comprising a cold air inlet, a furnace grate, columns, grid blocks, a regenerative chamber, a furnace liner, a furnace shell, a high-temperature low-oxygen combustor, a combustion chamber, an arc top, a hot air outlet and a flue gas outlet. The high-temperature low-oxygen top-combustion-type air heating furnace is characterized in that the high-temperature low-oxygen combustor is arranged at the upper part of the air heating furnace and comprises two gas inlets, circular tracks, nozzles, two air inlets and hollow gas pre-combustion chambers, each inlet, circular track and nozzle comprise 1-20 layers, combustion-supporting air over 800 DEG C sucks combustion products by fractional combustion and high-temperature airflows in the high-temperature low-oxygen combustor, and the oxygen volume density of a reaction area is diluted to realize ...

Slag gasifier hot mold experimental system

The utility model provides a slag gasifier hot mold experimental system, includes air pump, coal bunker, furnace body, the air pump respectively the nozzle through buffer tank, heat exchanger and furnace body couple, gas on the furnace body exports through heat exchanger and sprays the scrubber hookup, be provided with transition bin between coal bunker and the furnace body, transition bin is provided with electronic push -pull valve with the kneck of coal bunker, electronic push -pull valve aperture be 250mm, transition bin's structure for trapezoidal. The utility model has the advantages of reasonable design, it is convenient to maintain, can pass through the repetition test, has improved the development efficiency of slag gasifier greatly.

Composite solid cooling medium and preparation method thereof

The present invention relates to a composite solid cooling medium and a preparation method thereof. The composite solid cooling medium comprises 45 to 47 percent of Cr2O3, 1 to 2 percent of SiO2, 0.5 to 1 percent of CaO, 20 to 30 percent of FeO, 10 to 15 percent of MgO, 10 to 20 percent of Al2O3, and the balance being carbon powder with the particle size between 70 and 100 meshes. The medium has the advantages of effectively preventing a cooling water pipe from being melted through in the casting process, preventing air gaps from being produced between a matrix and the cooling water pipe, preventing the cooling water pipe from being remelted and recrystallized in the casting process to avoid destroying the prior rolling performance of the cooling water pipe, accurately realizing the slight melting of the outer surface of the cooling water pipe, solving the problems of melting the cooling water pipe through and oxidizing the inner surface of the cooling water pipe in the casting process, ...

Expansion slag bead casting drum

The invention discloses an expansion slag bead casting drum, relating to treatment equipment used for a blast-furnace slag dry method pelletization process. The invention aims to provide the expansion slag bead casting drum which has simple structure and convenient, easy and stable operation and can cast high-temperature slag beads. The expansion slag bead casting drum comprises a barrel. The barrel is horizontally arranged on a workbench face through a supporting device, wherein one end of the barrel is provided with a power device; the power device drives the barrel to rotate along the axis; the outer surface of the barrel is outwards provided with a plurality of blades along the radial direction; and a cooling device for cooling the barrel and the blades is also arranged inside the barrel.

Dry method granulating and waste heat recovering process of blast-furnace slag

High-temperature low-oxygen external combustion stove

The invention relates to a high-temperature low-oxygen external combustion stove, belonging to the technical field of hot-blast stoves. The high-temperature low-oxygen external combustion stove comprises a cold air inlet, a grate, a supporting column, checker bricks, a heat accumulation chamber, a stove lining, a stove shell, a high-temperature low-oxygen combustor, a combustion chamber, an arch crown, a hot air outlet and a smoke outlet, wherein the combustion chamber and the heat accumulation chamber of the external combustion stove are respectively positioned in two independent cylindricalshells; the combustion chamber is connected with the heat accumulation chamber through a cylindrical channel in the space of the arch crown; the high-temperature low-oxygen combustor for fractional combustion is arranged at the bottom of the combustion chamber; the high-temperature low-oxygen combustor comprises two groups of gas inlets, loops and spouts, two groups of air inlets, loops and spouts, ...

High-temperature low-oxygen internal-combustion-type air heating furnace

The invention relates to a high-temperature low-oxygen internal-combustion-type air heating furnace belonging to the technical field of air heating furnaces and comprising a cold air inlet, a furnace grate, columns, grid blocks, a regenerative chamber, a furnace liner, a furnace shell, a combustion chamber, an arc top, a hot air outlet, a flue gas outlet and a high-temperature low-oxygen combustor. The high-temperature low-oxygen internal-combustion-type air heating furnace is characterized in that the high-temperature low-oxygen combustor is arranged at the bottom of the air heating furnace and comprises an air gas pre-combustion chamber, two gas inlets, circular tracks, nozzles and two air inlets, and each inlet, circular track and nozzle comprise 1-20 layers. Combustion-supporting air over 800 DEG C is preheated by adopting a high-temperature preheating technology, combustion products are sucked by fractional combustion and high-temperature airflows in the high-temperature low-oxygen ...

Casting method of electric furnace water cooling cast steel furnace cover

The invention relates to a casting method of electric furnace water cooling cast steel furnace cover, which adopts a cast steel material to cast a base body and a cooling water pipe. The casting method comprises the following steps: adding a slagging agent and a silicon iron alloy block in molten steel for casting steel; putting the cooling water pipe into a casting model and leading a liquid cold medium and a composite solid cooling medium to pass through the cooling water pipe; using molten steel for casting steel to cast the base body, casting the middle part of the cooling water pipe intothe base body and leading the two ends thereof to extend from the base body; leading the casting model to be horizontal when in modeling, leading a feeder head to be modeled lopsidedly toward one side and heightening one side of the feeder head of the model after the model is boxed; adopting an upper layer of inner sprue and a lower layer of lower sprue to carry out stepped casting so as to form sequential ...