System for utilizing alloy liquid ingot mould pouring radiant heat

Abstract

The utility model provides an alloy liquid ingot mould pouring radiant heat utilization system, which belongs to the technical field of recycling of alloy liquid pouring heat of submerged arc furnace smelting and comprises a pouring flue gas recovery device and a pouring radiant heat recovery device. A channel is formed in the bottom of the pouring flue gas recovery device, and the lower portion of the channel is used for containing a movable ingot mold so that flue gas generated when alloy liquid is poured into the movable ingot mold can be recovered by the pouring flue gas recovery device. The pouring radiant heat recovery device is arranged in the pouring smoke recovery device and located above the channel, and the pouring radiant heat recovery device is used for recovering radiant heat of the movable ingot mold after alloy liquid is poured in a heat exchange mode. Therefore, radiant heat released by the high-temperature alloy liquid on the movable ingot mold is effectively recycled, and the recovery rate of heat energy and the utilization rate of heat energy resources are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery and utilization of alloy liquid pouring in smelting of an ore-heat furnace, and in particular to a system for utilizing radiation heat from pouring alloy liquid ingot molds. Background Art

[0002] Ferrosilicon is an iron alloy made by smelting in an electric furnace with coke, steel scraps, and quartz (or silica) as raw materials. Ferrosilicon can be used as an alloying element additive and is widely used in low-alloy structural steel, spring steel, bearing steel, heat-resistant steel, and electrical silicon steel. Ferrosilicon is often used as a reducing agent in ferroalloy production and the chemical industry. Ferrosilicon produces a large amount of flue gas during the pouring process, and the flue gas contains carbon particles and a large amount of carbon dust, etc. These flue gases pose a safety hazard to the working environment and human health of the production site, and if they are directly discharged outdoors, they are likely to cause environmental pollution.

[0003] In the prior art, a Chinese invention with application number CN202211170208.9 specifically discloses a device and method for collecting dust from a ferroalloy ore furnace for fixed-point ladle pouring. The patent is provided with a smoke dust collection hood, and a gap is arranged below the smoke dust collection hood for placing a mobile ingot mold car. After the iron is tapped, the ladle is transported to the casting span by the ladle transport car and the hoist in front of the furnace. The overhead crane lifts the ladle to the crossing trolley. After the crossing trolley pulls the ladle to the ladle turning mechanism, the hydraulic system is started, and the mechanism slowly tilts the ladle, and guides the flow through the guide flow trough to pour the high-temperature alloy liquid in the ladle into the ingot mold of the mobile ingot mold car. During the pouring process, the smoke is captured and collected by the smoke collection hood into the matching bag dust collector to achieve standard discharge of the casting smoke. The radiant heat released by the high-temperature alloy liquid on the mobile ingot mold cannot be recycled, which causes heat energy loss. Summary of the invention

[0004] In view of this, the utility model provides a system for utilizing radiation heat during casting of alloy liquid ingot mold to solve the technical problem of heat energy waste in the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A system for utilizing radiant heat from pouring alloy liquid ingot molds, comprising a pouring fume recovery device and a pouring radiant heat recovery device; a channel is provided at the bottom of the pouring fume recovery device, a mobile ingot mold is placed below the channel, so that the fume generated when pouring alloy liquid into the mobile ingot mold can be recovered by the pouring fume recovery device; the pouring radiant heat recovery device is arranged inside the pouring fume recovery device and located above the channel, and the pouring radiant heat recovery device is used to recover the radiant heat of the mobile ingot mold after pouring alloy liquid by heat exchange.

[0007] Preferably, the pouring radiation heat recovery device includes a plurality of heat recovery walls, which are connected in sequence and have water flowing inside the plurality of heat recovery walls so as to exchange the radiation heat of the movable ingot mold after pouring the alloy liquid through the water; the plurality of heat recovery walls are arranged in parallel and staggered above the channel, and the areas of the plurality of heat recovery walls decrease in sequence from top to bottom.

[0008] Preferably, the casting radiation heat recovery device also includes a heat reflecting plate, which is obliquely arranged above the movable ingot mold to reflect the radiant heat of the movable ingot mold after pouring the alloy liquid to the casting radiation heat recovery device to be recovered by the casting radiation heat recovery device.

[0009] Preferably, the pouring fume recovery device includes a ladle pouring fume collection hood and a mobile ingot mold pouring fume collection hood, the ladle pouring fume collection hood is connected to the mobile ingot mold pouring fume collection hood, the mobile ingot mold pouring fume collection hood is suspended in the air, and the suspended height is higher than the height of the mobile ingot mold, so as to place the mobile ingot mold and recover the fume generated when the mobile ingot mold pours molten alloy, a channel is provided at the bottom of the ladle pouring fume collection hood, and the top of the channel is flush with the bottom of the mobile ingot mold pouring fume collection hood, so that a part of the mobile ingot mold is located in the channel, for the ladle to pour the molten alloy into the mobile ingot mold; openings are provided on the top and front side of the ladle pouring fume collection hood for the ladle to enter the ladle pouring fume collection hood.

[0010] Preferably, the alloy liquid ingot mold casting radiation heat utilization system also includes a casting fume waste heat recovery device; the casting fume waste heat recovery device is respectively arranged on the side walls of the ladle casting fume collection hood and the side walls of the movable ingot mold casting fume collection hood; the casting radiation heat recovery device is arranged inside the movable ingot mold casting fume collection hood, and the casting fume waste heat recovery device is connected to the casting radiation heat recovery device.

[0011] Preferably, the alloy liquid ingot mold casting radiation heat utilization system also includes a casting fume treatment device; the casting fume treatment device includes a casting fume recovery pipe, a fume induced draft fan and a dust collector, the fume inlet of the casting fume recovery pipe is connected to the fume outlet of the casting fume recovery device, and the fume outlet of the casting fume recovery pipe is connected to the fume induced draft fan and the dust collector in sequence to transport the fume generated by the casting to the fume induced draft fan, and then discharge it into the atmosphere after dust removal by the dust collector.

[0012] Preferably, the alloy liquid ingot mold pouring radiation heat utilization system also includes a softening water tank, water treatment equipment, a waste heat boiler, a smoke tube evaporator and a mineral arc furnace. The softening water tank, water treatment equipment and waste heat boiler are connected in sequence. The water outlet of the waste heat boiler is connected to the water inlet of the pouring radiation heat recovery device, the water outlet of the pouring radiation heat recovery device is connected to the water inlet of the smoke tube evaporator, and the water outlet of the smoke tube evaporator is connected to the water inlet of the mineral arc furnace.

[0013] Preferably, the pouring fume recovery device also includes an induced draft fan, a heating pipe is arranged on the inner wall of the electric arc furnace, the air inlet of the heating pipe is used for air entry, the air outlet of the heating pipe is connected to the air inlet of the induced draft fan, the air outlet of the induced draft fan is connected to the air inlet of the pouring fume recovery device, so that the air entering the heating pipe is heated and blown into the pouring fume recovery device at a predetermined angle, so that the radiant heat of the movable ingot mold after pouring the alloy liquid can be directed to reach the pouring radiant heat recovery device under the guidance of the high-temperature air.

[0014] Preferably, the submerged arc furnace further comprises an oil guide pipe, which is arranged on the inner side wall of the submerged arc furnace; the outer surface of the pouring fume recovery device is covered with a layer of insulation pipe, and the oil guide pipe is connected to the insulation pipe to heat the heat transfer oil in the oil guide pipe through the temperature in the submerged arc furnace, and the heated heat transfer oil is transported to the insulation pipe to insulate the interior of the pouring fume recovery device.

[0015] Preferably, the alloy liquid ingot mold pouring radiation heat utilization system also includes a waste heat boiler, the waste heat boiler includes a steam drum, and the pouring radiation heat recovery device includes an air collecting box, the water outlet of the steam drum is connected to the water inlet of the air collecting box, and the air inlet of the steam drum is connected to the air supply end of the air collecting box, so as to utilize the water of the waste heat boiler to perform heat exchange on the radiation heat generated during pouring, and transport the steam generated by the heat exchange back to the waste heat boiler.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] After the iron is tapped from the ore-fired furnace, the ladle is moved to the pouring fume recovery device, and the mobile ingot mold is moved to the channel at the bottom of the pouring fume recovery device; at this time, the ladle is poured into the pouring fume recovery device, and the alloy liquid is poured into the mobile ingot mold. The fume generated by the ladle and the mobile ingot mold during pouring is recovered by the pouring fume recovery device; the pouring radiation heat recovery device is arranged inside the pouring fume recovery device and located above the channel. The pouring radiation heat recovery device recovers the radiation heat generated by the mobile ingot mold after pouring the alloy liquid through heat exchange. In this way, the radiation heat released by the high-temperature alloy liquid on the mobile ingot mold is effectively recovered and utilized, and the heat recovery rate and the utilization rate of heat energy resources are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic diagram of the alloy liquid ingot mold pouring radiation heat utilization system of the utility model.

[0019] Figure 2 The utility model is a structural schematic diagram of a system for utilizing radiation heat for pouring alloy liquid ingot mold.

[0020] Figure 3 It is another structural schematic diagram of the alloy liquid ingot mold pouring radiation heat utilization system of the utility model.

[0021] Figure 4 This is a schematic diagram of the application of the overhead crane and the ladle.

[0022] Figure 5 It is another structural schematic diagram of the alloy liquid ingot mold pouring radiation heat utilization system of the present utility model.

[0023] Figure 6 It is a schematic diagram of heat energy application of the ore-fired furnace of the utility model.

[0024] Figure 7 It is another structural schematic diagram of the alloy liquid ingot mold pouring radiation heat utilization system of the present utility model.

[0025] Figure 8 It is a schematic diagram of heat energy treatment of the alloy liquid ingot mold pouring radiation heat utilization system of the utility model.

[0026] Fig. 9 It is another structural schematic diagram of the alloy liquid ingot mold pouring radiation heat utilization system of the utility model.

[0027] In the figure: a casting flue gas recovery device 100, a casting radiation heat recovery device 210, a casting flue gas treatment device 300, a waste heat boiler 400, a mobile mold 500, a ladle casting flue gas collection hood 110, a mobile mold casting flue gas collection hood 120, a high-pressure fan 130, an induced draft fan 140, a heat recovery wall 211, a heat reflecting plate 212, a flue gas waste heat recovery device 220, a gas collecting box 230, a casting flue gas recovery pipeline 310, a flue gas induced draft fan 320, a dust collector 330, a steam drum 410, a track 510, an overhead crane 600, a ladle 610, a softening water tank 700, a water treatment equipment 800, a smoke tube evaporator 900, an electric arc furnace 1000, a heating pipeline 1010, and an air pipeline 1020. DETAILED DESCRIPTION

[0028] The technical scheme and technical effects of the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0029] Please also see Figures 1 to 3A system for utilizing radiant heat from pouring alloy liquid ingot mold, comprising a pouring fume recovery device 100 and a pouring radiant heat recovery device 210; a channel is provided at the bottom of the pouring fume recovery device 100, and a mobile ingot mold 500 is placed under the channel, so that the fume generated when pouring alloy liquid into the mobile ingot mold 500 can be recovered by the pouring fume recovery device 100; the pouring radiant heat recovery device 210 is arranged inside the pouring fume recovery device 100 and located above the channel, and the pouring radiant heat recovery device 210 is used to recover the radiant heat of the mobile ingot mold 500 after pouring the alloy liquid by heat exchange.

[0030] When the ladle is poured into the mobile ingot mold, both the ladle and the mobile ingot mold will generate a large amount of pouring fume, and the mobile ingot mold will release radiant heat outward. In the present invention, the ladle is moved into the pouring fume recovery device 100, and the mobile ingot mold 500 is moved to the channel at the bottom of the pouring fume recovery device 100. At this time, the ladle is poured into the pouring fume recovery device 100 to pour the alloy liquid into the mobile ingot mold 500, so that the fume generated by the ladle and the mobile ingot mold during pouring will be collected in the pouring fume recovery device 100 and recovered by the pouring fume recovery device 100; the pouring radiant heat recovery device 210 is arranged inside the pouring fume recovery device 100 and located above the channel, so the radiant heat generated by the mobile ingot mold 500 after pouring the alloy liquid is recovered by the pouring radiant heat recovery device 210 through heat exchange. Thereby, the radiant heat released by the high-temperature alloy liquid on the mobile ingot mold is effectively recovered and utilized, and the recovery rate of heat energy and the utilization rate of heat energy resources are improved. The water inlet of the pouring radiation heat recovery device 210 is connected to the water outlet of the external water supply device, so as to exchange heat with the radiation heat generated by the mobile ingot mold 500 after pouring the alloy liquid through water, so as to realize the recovery and utilization of the radiation heat generated by the mobile ingot mold 500 after pouring the alloy liquid, thereby eliminating the need to transport the radiation heat to the external water supply device for heat exchange, preventing the loss of heat energy during transportation, and improving the recovery rate of flue gas waste heat and radiation heat. The external water supply device can be a water tank or a waste heat boiler, which is not limited here.

[0031] For further information, see Figure 2The pouring radiation heat recovery device 210 includes a plurality of heat recovery walls 211, which are connected in sequence, and water flows inside the plurality of heat recovery walls to exchange the radiation heat of the mobile ingot mold 500 after pouring the alloy liquid through water; the plurality of heat recovery walls 211 are arranged in parallel and staggered inside the pouring fume recovery device 100 above the channel, and the area of ​​the plurality of heat recovery walls 211 decreases from top to bottom. Thus, the upper heat recovery wall will not be completely blocked by the lower heat recovery wall, so that the radiation heat generated by the mobile ingot mold after pouring the alloy liquid can be radiated to each layer of the heat recovery wall and fully recovered by the plurality of heat recovery walls. In some embodiments, the plurality of heat recovery walls can also be arranged at different angles and staggered inside the pouring fume recovery device 100 above the channel, so that the radiation heat is reflected to each heat recovery wall at different angles, thereby increasing the recovery rate of the radiation heat. In some embodiments, the side wall of the heat recovery wall disposed on the uppermost layer facing the casting fume recovery device 100 may be provided with an insulation shell to prevent the radiant heat recovered by the heat recovery wall from being radiated again from the side wall.

[0032] Further, please refer again to Figure 2 , the pouring radiation heat recovery device 210 also includes a heat reflecting plate 212, which is tiltedly arranged above the movable ingot mold 500 to reflect the radiation heat of the movable ingot mold 500 after pouring the alloy liquid to the pouring radiation heat recovery device 210, and is recovered by the pouring radiation heat recovery device 210. Specifically, two heat reflecting plates can be symmetrically arranged above the movable ingot mold 500, wherein both heat reflecting plates form a certain angle with the movable ingot mold 500, and the distance between the two heat reflecting plates is greater than the width of the movable ingot mold 500, so as to reduce the intensity of the radiation heat generated by the movable ingot mold after pouring the alloy liquid, and the radiation heat is reflected to the pouring radiation heat recovery device 210 through the heat reflecting plate, and is fully recovered by the multiple heat recovery walls 211.

[0033] For further information, see Figure 3The pouring fume recovery device 100 includes a ladle pouring fume collection hood 110 and a mobile ingot mold pouring fume collection hood 120. The ladle pouring fume collection hood 110 is connected to the mobile ingot mold pouring fume collection hood 120. The mobile ingot mold pouring fume collection hood 120 is suspended in the air, and the suspended height is higher than the height of the mobile ingot mold 500 to place the mobile ingot mold 500 and recover the fume generated when the mobile ingot mold 500 pours the alloy liquid. The bottom of the ladle pouring fume collection hood 110 is provided with a vent. The top of the channel is flush with the bottom of the mobile ingot mold pouring fume collection hood 120, so that a part of the mobile ingot mold 500 is located in the channel, and the ladle 610 is used to pour the alloy liquid into the mobile ingot mold 500; the top and front side of the ladle pouring fume collection hood 110 are provided with openings for the ladle 610 to enter the ladle pouring fume collection hood 110, so that the ladle 610 can enter the ladle pouring fume collection hood 110 conveniently, and the fume generated during the ladle pouring is effectively recovered. During the pouring, the fume generated by the ladle 610 rises and is recovered through the ladle pouring fume collection hood 110, and the fume generated by the mobile ingot mold 500 rises and is recovered through the mobile ingot mold pouring fume collection hood 120, thereby improving the recovery efficiency of the fume generated during the pouring of the ladle and the mobile ingot mold, and preventing the fume from leaking and causing safety hazards.

[0034] Further, please refer again to Figure 3 The alloy liquid ingot mold casting radiation heat utilization system also includes a casting fume waste heat recovery device 220, which is respectively arranged on the side wall of the ladle casting fume collection hood 110 and the side wall of the mobile ingot mold casting fume collection hood 120; the casting radiation heat recovery device 210 is arranged inside the mobile ingot mold casting fume collection hood 120, and the casting fume waste heat recovery device 220 is connected to the casting radiation heat recovery device 210. The water inlet of the casting radiation heat recovery device 210 is connected to the water outlet of the casting fume waste heat recovery device 220, and the water inlet of the casting fume waste heat recovery device 220 is connected to the water outlet of the external water supply device, so that the casting radiation heat recovery device performs heat exchange with the radiation heat generated by the mobile ingot mold after casting the alloy liquid through water, and the casting fume waste heat recovery device performs heat exchange with the flue gas waste heat generated by casting through water.

[0035] Among them, because flue gas is generated during the pouring process, the flue gas will also release heat, that is, flue gas waste heat; at the same time, the mobile ingot mold and the ladle contain too high a temperature of the alloy liquid, so during the pouring process, the mobile ingot mold will release radiant heat in the form of electromagnetic waves. The flue gas waste heat moves with the flue gas, so a pouring flue gas waste heat recovery device is set on the rising route of the flue gas to recover the flue gas waste heat, that is, a pouring flue gas waste heat recovery device 220 is set on the side wall of the ladle pouring flue gas collection hood 110 and the side wall of the mobile ingot mold pouring flue gas collection hood 120. The flue gas waste heat generated by the ladle during pouring can be recovered by the pouring flue gas waste heat recovery device set on the side wall of the ladle pouring flue gas collection hood 110, and the flue gas waste heat generated by the mobile ingot mold can be recovered by the pouring flue gas waste heat recovery device set on the side wall of the mobile ingot mold smoke collection hood 120. Since most of the pouring smoke is emitted from above the movable ingot mold during the pouring process, a pouring smoke waste heat recovery device can be set on the side wall of the ladle pouring smoke collection hood 110 connected to the movable ingot mold smoke collection hood 120, so as to fully recover the smoke waste heat generated during the pouring of the movable ingot mold.

[0036] In addition, the energy released by radiant heat is related to the distance. The more radiant heat is radiated outward, the lower the heat is. Therefore, a radiant heat recovery device should be set at a position closer to the radiator, that is, the casting radiant heat recovery device 210 is set in the mobile ingot mold casting fume collection hood 120 to prevent the radiant heat from being lost and not fully recovered. In addition, radiant heat is also related to temperature. When the casting is completed, the temperature will slowly drop, so the intensity of the radiant heat will also decay. The casting radiant heat recovery device 210 is set in the mobile ingot mold casting fume collection hood 120, and the radiant heat with lower intensity can still be recovered, thereby improving the recovery rate of radiant heat. In some embodiments, the casting radiant heat recovery device 210 and the casting fume waste heat recovery device 220 can use heat absorbing pipes and membrane walls to recover the flue gas waste heat generated during casting and the radiant heat generated by the mobile ingot mold after pouring the alloy liquid through heat exchange.

[0037] For further information, see Figure 4The alloy liquid ingot mold casting radiation heat utilization system also includes a crane 600 and a ladle 610. The crane 600 is connected to the ladle 610 through a steel wire rope to move the ladle 610 into a ladle casting fume collection hood 110 to collect the fume generated during the casting of the ladle 610 through the ladle casting fume collection hood 110. After the iron is tapped from the ore-blast furnace, the ladle 610 is fixedly connected to the steel wire rope on the overhead crane 600, and the overhead crane 600 drives the ladle 610 to move into the ladle pouring fume collecting hood 110 through the steel wire rope, wherein an opening for the steel wire rope to enter is provided on the top of the ladle pouring fume collecting hood 110, and the opening provided on the upper front half of the ladle pouring fume collecting hood 110 can only be entered by the steel wire rope, and the opening provided on the lower front half is larger than the size of the ladle, so that the ladle can enter the ladle pouring fume collecting hood 110, thereby facilitating the ladle 610 to enter the ladle pouring fume collecting hood 110 and effectively recovering the fume generated during the ladle pouring.

[0038] For further information, see Figure 5 The alloy liquid ingot mold casting radiation heat utilization system also includes a casting fume treatment device 300; the casting fume treatment device 300 includes a casting fume recovery pipeline 310, a fume induced draft fan 320 and a dust collector 330, the fume inlet of the casting fume recovery pipeline 100 is connected to the fume outlet of the casting fume recovery device 310, and the fume outlet of the casting fume recovery pipeline 310 is connected to the fume induced draft fan 320 and the dust collector 330 in sequence to transport the fume generated by the casting to the fume induced draft fan, and then discharge it into the atmosphere after dust removal by the dust collector. Specifically, the flue gas generated during the pouring of the ladle 610 enters the ladle pouring flue gas collecting hood 110 after the waste heat of the flue gas is recovered by the pouring flue gas waste heat recovery device 220. The flue gas generated during the pouring of the mobile ingot mold enters the mobile ingot mold pouring flue gas collecting hood 120 after the waste heat of the flue gas is recovered by the pouring flue gas waste heat recovery device 220. Then, it merges with the low-temperature flue gas in the ladle pouring flue gas collecting hood 110 and enters the pouring flue gas recovery pipe 310. The pouring flue gas recovery pipe 310 transports the low-temperature flue gas to the flue gas induced draft fan 320, and the flue gas induced draft fan 320 transports the low-temperature flue gas to the dust collector 330, and is discharged into the atmosphere after dust removal.

[0039] Further, please refer again to Figure 5The alloy liquid ingot mold casting radiation heat utilization system also includes a high-pressure fan 130, which is connected to the casting fume recovery device 100 through a compressed air duct to blow the casting fume rising to the top of the casting fume recovery device 100 into the casting fume recovery pipeline 310. Specifically, a high-pressure fan 130 is arranged on the top of the casting fume recovery device 100, and a compressed air duct is arranged to connect the casting fume recovery device 100 with the high-pressure fan 130. When the fume generated during ladle casting rises to the top, the high-pressure fan 130 can be used to pressurize the fume into the ladle casting fume collection hood 110, and the fume merges with the fume generated by the mobile mold casting and enters the casting fume recovery pipeline 310, and the casting fume recovery pipeline 310 transports the fume to the fume induced draft fan 320, and finally passes through the dust collector 330 to remove dust and then is discharged and transported to the atmosphere. Thus, the high-pressure fan 130 prevents the pouring smoke from leaking out from the gaps in the wire ropes of the overhead traveling crane that suspends the ladle 610 .

[0040] For further information, see Figure 6 The alloy liquid ingot mold pouring radiation heat utilization system also includes a softening water tank 700, a water treatment device 800, a smoke tube evaporator 900 and a mineral arc furnace 1000. The softening water tank 700, the water treatment device 800 and the waste heat boiler 400 are connected in sequence. The water outlet of the waste heat boiler 400 is connected to the water outlet of the pouring radiation heat recovery device 210, the water outlet of the pouring radiation heat recovery device 210 is connected to the water inlet of the smoke tube evaporator 900, and the water outlet of the smoke tube evaporator 900 is connected to the water inlet of the mineral arc furnace 1000. In some embodiments, the softened water tank 700 can be provided with a heating and deoxygenating water heater. Water is softened by the softened water tank 700 and the water treatment equipment 800 to obtain softened water. The softened water is heat exchanged through the exhaust gas temperature of 160°C of the waste heat boiler to heat the softened water to above 100°C. The softened water is then transported to the pouring radiation heat recovery device 210 to continue heating the softened water through the flue gas waste heat and radiation heat generated by pouring. The heated water is transported to the smoke tube evaporator 900 and the submersible arc furnace 1000, and the heated water is converted into steam through the smoke tube evaporator 900 and the submersible arc furnace 1000, and transported to the steam turbine for power generation.

[0041] In some embodiments, see Figure 7 , since one ladle can be used to pour multiple mobile ingot molds during ladle pouring, after pouring the molten alloy into the mobile ingot mold, the mobile ingot mold enters the pouring radiation heat recovery device for radiation heat recovery. At this time, it is necessary to wait for the radiation heat recovery of the mobile ingot mold to be completed before pouring the molten alloy into the next mobile ingot mold. This operation will cause the ladle to cool and solidify while waiting for the radiation heat of the mobile ingot mold to be recovered, affecting the pouring efficiency of the molten alloy. Therefore, multiple mobile ingot molds are placed in the ladle pouring fume collection hood 110 and the pouring radiation heat recovery device 210. Specifically, as Figure 6 As shown, two movable ingot molds 500 sequentially enter the ladle pouring fume collection hood, and the ladle sequentially pours molten alloy into the movable ingot molds. When the pouring of the first movable ingot mold is completed, the first movable ingot mold moves toward the pouring radiation heat recovery device 210 to recycle the radiant heat of the first movable ingot mold; at the same time, the ladle pours the molten alloy into the second movable ingot mold, and after the pouring is completed, the second movable ingot mold moves toward the pouring radiation heat recovery device 210 to recover the radiant heat; at the same time, the ladle starts to pour the molten alloy into the third movable ingot mold; when the radiant heat recovery of the first movable ingot mold is completed, the first movable ingot mold is pushed out of the pouring radiation heat recovery device 210, and the following movable ingot molds also move accordingly, so that the ladle will not be idle during the process of radiant heat recovery of the movable ingot mold, thereby improving the pouring efficiency of the ladle and realizing continuous pouring of the ladle; at the same time, when the pouring of one ladle is completed, the next ladle is continued to be poured, thereby realizing continuous production of the electric arc furnace. Among them, the temperature of the mobile ingot mold during pouring can reach 1200 degrees. The time for pouring a mobile ingot mold is four minutes. During this period, the temperature of the mobile ingot mold will be recovered by the pouring flue gas waste heat recovery device as the flue gas dissipates. The temperature of the mobile ingot mold will drop to 800 degrees and enter the pouring radiation heat recovery device 210 to recover the radiation heat of the mobile ingot mold 500. Finally, the temperature of the mobile ingot mold coming out of the pouring radiation heat recovery device reaches 200-300 degrees, so that the heat of the mobile ingot mold can be effectively recovered and utilized.

[0042] In some embodiments, please continue to see Figure 7 The submerged arc furnace includes an air duct 1020, and the high-temperature flue gas in the submerged arc furnace 1000 is blown toward the inside of the ladle pouring fume collecting hood 110 through the air duct 1020, thereby playing a role in heat preservation for the ladle pouring fume collecting hood when the ladle has not started pouring, so that the internal space of the ladle pouring fume collecting hood is in a high-temperature state; and when the ladle starts to pour the movable ingot mold, the high-temperature flue gas in the submerged arc furnace is blown toward the movable ingot mold in the pouring radiation heat recovery device 210 at a predetermined angle through the air duct 1020. Since the movable ingot mold radiates heat outward, by blowing the high-temperature flue gas onto the movable ingot mold, the air flow velocity of the high-temperature flue gas drives the radiant heat of the movable ingot mold to move toward the pouring radiation heat recovery device 210 in a directional manner, thereby accelerating the radiation speed of the radiant heat, improving the recovery efficiency of the radiant heat, and further reducing the temperature of the movable ingot mold in a short time.

[0043] In some embodiments, please continue to see Figure 7The pouring fume recovery device also includes a waterproof plate 620, wherein the waterproof plate 620 is tightly connected to the ladle pouring fume collection hood 110, and a ladle can be arranged under the waterproof plate 620. Since there is a risk of water leakage in the furnace tube, when water falls into the ladle, it may cause the ladle to splash out alloy liquid, thereby affecting production and the safety of the staff. Therefore, by arranging a waterproof plate 620 above the ladle, water is prevented from falling into the ladle when the furnace tube leaks, and the water is guided to the drainage pipe for discharge.

[0044] For further information, see Figure 8 The casting fume recovery device 100 also includes an induced draft fan 140. A heating pipe 1010 is arranged on the inner wall of the electric arc furnace 1000. The air inlet of the heating pipe 1010 is used for air to enter. The air outlet of the heating pipe 1010 is connected to the air inlet of the induced draft fan 140. The air outlet of the induced draft fan 140 is connected to the air inlet of the casting fume recovery device 100, so that the air entering the heating pipe 1010 is heated and blown into the casting fume recovery device 100 at a predetermined angle, so that the radiant heat of the moving ingot mold 500 after pouring the alloy liquid is directed to reach the casting radiant heat recovery device 210 under the guidance of the high-temperature air. After smelting, the ore furnace 1000 pours the alloy liquid into the ladle 610, which generates 2000m³ of 160°C air per hour. The air enters the heating pipe 1010 and is heated to 500°C. The air then passes through the induced draft fan 140 to directly blow the 500°C high-temperature air into the casting fume recovery device 100 at a predetermined angle, so that the radiant heat of the mobile ingot mold 500 after pouring the alloy liquid is directed to the casting radiant heat recovery device 210 under the guidance of the high-temperature air, thereby accelerating the radiation efficiency of the radiant heat and thus accelerating the recovery efficiency of the radiant heat, so that the temperature of the mobile ingot mold is reduced in a short time and pushed out of the casting radiant heat recovery device 210, thereby accelerating the continuous casting speed of the ladle and improving production efficiency.

[0045] In some embodiments, the pouring fume recovery device 100 can be covered with an insulation pipe on the surface, and high-temperature air is blown into the insulation pipe through the induced draft fan 140 to insulate the pouring fume recovery device 100 and the pouring radiant heat recovery device 210 when the pouring work is not performed, so as to avoid the influence of the radiant heat recovery effect due to the excessive temperature difference during pouring. In some embodiments, an oil guide pipe is also provided on the inner wall of the submerged arc furnace 1000, and the oil guide pipe is used to transfer the heat in the submerged arc furnace to the place where heating is required. The heat transfer oil in the oil guide pipe can be heated by the temperature in the submerged arc furnace to increase the temperature of the heat transfer oil. The oil guide pipe is connected to the insulation pipe of the pouring fume recovery device 100, and the heated heat transfer oil is transported to the insulation pipe under the action of the oil pump. The heat transfer oil transfers heat to the inside of the pouring fume recovery device through the insulation pipe, so that when the pouring work is not performed, the temperature inside the pouring fume recovery device is maintained, and the inside of the pouring fume recovery device is in a high temperature state.

[0046] For further information, see Fig. 9 The casting radiation heat recovery device 200 includes an air collecting box 230, and the alloy liquid ingot mold casting radiation heat utilization system also includes a waste heat boiler 400. The waste heat boiler 400 includes a steam drum 410. The water outlet of the steam drum 410 is connected to the water inlet of the air collecting box 230, and the air inlet of the steam drum 410 is connected to the air supply end of the air collecting box 320, so as to utilize the water of the waste heat boiler 400 to perform heat exchange on the heat energy generated during casting, and transport the steam generated by the heat exchange back to the waste heat boiler 400. In some embodiments, the original waste heat boiler is used, and two pipelines, one inlet and one outlet, are separated from the waste heat boiler drum 410. The water outlet pipeline is connected to the water inlet of the gas collecting box 230 of the pouring radiation heat recovery device, and the air inlet of the waste heat boiler drum 410 is connected to the air supply end of the steam collecting box 320 of the pouring radiation heat recovery device. A check valve and a corresponding valve are added to the pipeline. The pouring radiation heat recovery device exchanges heat between water and the flue gas waste heat and radiation heat generated by pouring, and then introduces the steam generated by the heat exchange into the waste heat boiler drum through the insulation pipeline, and is transported to the steam turbine generator set through the low-temperature superheater, the high-temperature superheater, and the high-temperature steam pipeline for power generation. In this way, the recovered flue gas waste heat and radiation heat are utilized, the evaporation capacity of the waste heat boiler is increased, and the power generation is increased.

[0047] Further, please refer again to Figure 1 The alloy liquid ingot mold casting radiation heat utilization system also includes a track 510, which is arranged along the length direction of the channel and is used to move the mobile mold 500. Specifically, a channel is arranged at the bottom of the casting fume recovery device 100, and a track 510 is arranged along the length direction of the channel, and the length of the track 510 is longer than the length of the casting fume recovery device 100. The track 510 is used to place the mobile mold 500, and the mobile mold 500 can move back and forth on the track 510. Since the alloy liquid in the ladle can generally satisfy multiple mobile molds, multiple mobile molds can be connected together and placed on the track 510. There is no need to move the casting fume recovery device, the casting radiation heat recovery device and the casting fume treatment device back and forth. It is only necessary to move the mobile mold 500 to realize the casting of multiple mobile molds, thereby reducing the workload of the staff and improving the efficiency of casting.

[0048] The above disclosure is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. A system for utilizing radiation heat for pouring alloy liquid ingot mold, characterized in that: It includes a pouring fume recovery device and a pouring radiation heat recovery device; a channel is opened at the bottom of the pouring fume recovery device, and a mobile ingot mold is placed below the channel, so that the fume generated when the alloy liquid is poured into the mobile ingot mold can be recovered by the pouring fume recovery device; the pouring radiation heat recovery device is arranged inside the pouring fume recovery device and is located above the channel, and the pouring radiation heat recovery device is used to recover the radiation heat of the mobile ingot mold after pouring the alloy liquid by heat exchange.

2. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 1, characterized in that: The pouring radiation heat recovery device includes a plurality of heat recovery walls, which are connected in sequence and have water flowing inside the plurality of heat recovery walls so as to exchange the radiation heat of the movable ingot mold after pouring the alloy liquid through the water; the plurality of heat recovery walls are arranged in parallel and staggered above the channel, and the areas of the plurality of heat recovery walls decrease in sequence from top to bottom.

3. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 2, characterized in that: The pouring radiation heat recovery device also includes a heat reflecting plate, which is obliquely arranged above the movable ingot mold to reflect the radiant heat of the movable ingot mold after pouring the alloy liquid to the pouring radiation heat recovery device to be recovered by the pouring radiation heat recovery device.

4. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 1, characterized in that: The pouring fume recovery device comprises a ladle pouring fume collection hood and a movable ingot mold pouring fume collection hood, the ladle pouring fume collection hood being connected to the movable ingot mold pouring fume collection hood, the movable ingot mold pouring fume collection hood being suspended in the air, the suspended height being higher than the height of the movable ingot mold so as to place the movable ingot mold and recover the fume generated when the movable ingot mold is pouring molten alloy, a channel is provided at the bottom of the ladle pouring fume collection hood, the top of the channel is flush with the bottom of the movable ingot mold pouring fume collection hood so that a part of the movable ingot mold is located in the channel for the ladle to pour the molten alloy into the movable ingot mold; openings are provided at the top and front side of the ladle pouring fume collection hood for the ladle to enter the ladle pouring fume collection hood.

5. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 4, characterized in that: The alloy liquid ingot mold casting radiation heat utilization system also includes a casting fume waste heat recovery device; the casting fume waste heat recovery device is respectively arranged on the side wall of the ladle casting fume collection hood and the side wall of the movable ingot mold casting fume collection hood; the casting radiation heat recovery device is arranged inside the movable ingot mold casting fume collection hood, and the casting fume waste heat recovery device is connected to the casting radiation heat recovery device.

6. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 1, characterized in that: The alloy liquid ingot mold casting radiation heat utilization system also includes a casting fume treatment device; the casting fume treatment device includes a casting fume recovery pipeline, a fume induced draft fan and a dust collector, the fume inlet of the casting fume recovery pipeline is connected to the fume outlet of the casting fume recovery device, and the fume outlet of the casting fume recovery pipeline is connected to the fume induced draft fan and the dust collector in sequence to transport the fume generated by the casting to the fume induced draft fan, and then discharge it into the atmosphere after dust removal by the dust collector.

7. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 1, characterized in that: The alloy liquid ingot mold pouring radiation heat utilization system also includes a softening water tank, water treatment equipment, a waste heat boiler, a smoke tube evaporator and a mineral arc furnace. The softening water tank, water treatment equipment and waste heat boiler are connected in sequence. The water outlet of the waste heat boiler is connected to the water inlet of the pouring radiation heat recovery device, the water outlet of the pouring radiation heat recovery device is connected to the water inlet of the smoke tube evaporator, and the water outlet of the smoke tube evaporator is connected to the water inlet of the mineral arc furnace.

8. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 7, characterized in that: The pouring fume recovery device also includes an induced draft fan. A heating pipe is arranged on the inner wall of the blast furnace. The air inlet of the heating pipe is used for air entry. The air outlet of the heating pipe is connected to the air inlet of the induced draft fan. The air outlet of the induced draft fan is connected to the air inlet of the pouring fume recovery device, so that the air entering the heating pipe is heated and blown into the pouring fume recovery device at a predetermined angle, so that the radiant heat of the movable ingot mold after pouring the alloy liquid can be directed to reach the pouring radiant heat recovery device under the guidance of the high-temperature air.

9. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 7, characterized in that: The submerged arc furnace also includes an oil guide pipe, which is arranged on the inner wall of the submerged arc furnace; the outer surface of the pouring fume recovery device is covered with a layer of insulation pipe, and the oil guide pipe is connected to the insulation pipe to heat the heat transfer oil in the oil guide pipe through the temperature in the submerged arc furnace, and the heated heat transfer oil is transported to the insulation pipe to insulate the inside of the pouring fume recovery device.

10. The alloy liquid ingot mold pouring radiation heat utilization system according to claim 1, characterized in that: The alloy liquid ingot mold casting radiation heat utilization system also includes a waste heat boiler, which includes a steam drum. The casting radiation heat recovery device includes an air collecting box. The water outlet of the steam drum is connected to the water inlet of the air collecting box, and the air inlet of the steam drum is connected to the air supply end of the air collecting box, so as to utilize the water of the waste heat boiler to exchange the radiation heat generated during casting, and transport the steam generated by the heat exchange back to the waste heat boiler.

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