CN102212627A - Device for crushing steel slag and recovering heat - Google Patents
Device for crushing steel slag and recovering heat Download PDFInfo
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- CN102212627A CN102212627A CN2011101065457A CN201110106545A CN102212627A CN 102212627 A CN102212627 A CN 102212627A CN 2011101065457 A CN2011101065457 A CN 2011101065457A CN 201110106545 A CN201110106545 A CN 201110106545A CN 102212627 A CN102212627 A CN 102212627A
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- slag
- interchanger
- water
- heat
- ball milling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/052—Apparatus features including rotating parts
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/052—Apparatus features including rotating parts
- C21B2400/056—Drums whereby slag is poured on or in between
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/064—Thermally-conductive removable bodies, e.g. balls
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/072—Tanks to collect the slag, e.g. water tank
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/074—Tower structures for cooling, being confined but not sealed
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides a device for crushing steel slag and recovering heat. The device is characterized in that the device comprises an integration tank (48), wherein a feed port (34) and an exhaust port (33) are arranged at the top of the integration tank (48); a tail end slag outlet (18) is arranged at the bottom of the integration tank (48); water spray nozzles (2) are installed in the integration tank (48); and a primary slag outlet (7), ball milling rollers (9), a secondary slag outlet (14), a tertiary slag outlet (47), a primary sensible heat exchange chamber (46), a secondary sensible heat exchange chamber (23) and a tertiary sensible heat exchange chamber (41) are arranged in the integration tank (48); four water channels are arranged: the first channel is used for spray water circulation; the second channel is used for high temperature water circulation to generate power; the third channel is used for a refrigerating unit or floor heating unit; and the fourth channel is connected with a pipe network of domestic water for the users; a material distribution board A (13) is arranged below the secondary slag outlet (14); and a material distribution board B (40) is arranged below the tertiary slag outlet (47).
Description
Technical field
The present invention relates to a kind of slag fragmentation and heat reclamation device.
Background technology
Steel-making always produces a large amount of slags, and 1 ton of steel of every production will produce 0.13 ton of slag.Scorching hot slag has abundant heat energy, and its temperature reaches 1400-1600 ℃, contains 2.4 * 10 in the slag per ton
8The sensible heat of KJ is equivalent to the energy of 30-40Kg heavy oil.And contain the steel scrap about 10% in the slag, and a large amount of useful chemical elements, make full use of the useful component in the slag, help improving the recovery benefit of slag.At present, domestic and international most of steel-making enterprise all is that hot steel slag is carried out processing after the various cooling process, is used behind the extraction metal wherein again.From the treatment process analysis of domestic and international slag, most of iron and steel enterprise carries out hot steel slag to carry out fragmentation (fragmentation), screening, magnetic separation processing after the various cooling process, is used behind the extraction metal wherein again.But the enrich heat contained for slag but also do not have and can be fully utilized, and this part energy is slatterning in vain not only, and cause a large amount of wastes of water resources, and environment has also been caused serious pollution.In recent years, the research of slag sensible heat recovery technology has started new tide abroad, and domestic in this respect research also is in experimental stage.
In the fragmentation and heat recycle process of slag, through fragmentation and cool, and make slag become tiny solid particulate in liquid slag, so that from slag, magneticly elect steel scrap.In the fragmentation and process of cooling of slag, the heat of slag is reclaimed and utilizes, the high-temperature steam of producing respectively more than 350 ℃ is used for generating electricity, 75-100 ℃ middle high-temperature water is used for summer refrigeration or heating in winter, middle water at low temperature about 60 ℃ is used as shower or other daily life water, with the comprehensive recovery that reaches steel scrap and heat and the purpose of utilization.The Chinese invention patent application discloses a kind of slag heat recovery technology that utilizes liquid tin as thermal barrier for No. 94107284.3.This technology directly contacts liquid tin with slag, absorbs behind the heat of slag and carries out indirect heat exchange through the saturation steam after the preheating repeatedly, and the superheated vapour of generation is used for generating.This technology has been considered the heat transfer property of thermal barrier and has been carried out recovery of heat, can improve the comprehensive utilization and the continual non-stop run of the energy.But this technology has only been considered the utilization of high-temperature steam; Though the heat conductivity of tin is high, but its heat storage performance is very low, its used heat utilization ratio less than 40%; Simultaneously, tin is unfavorable for the fragmentation of slag attached to the slag surface, causes the recovery difficulty of steel scrap.The Chinese invention patent application discloses a kind of slag heat recovery technology of wind crush method for No. 98123555.7.This technology utilizes air as thermal barrier, the slag heating that air is come out by drum apparatus, and the temperature of air reaches 350-400 ℃, and high temperature air is transported to waste heat boiler, and water vapour in the heating boiler, to reach the purpose of recovery of heat.But this technology has also only been utilized high-temperature part wherein, and the range of temperature of air is very little, only differs about 170 ℃, the heat storage capacity that adds air is very little, the heat of absorption of air slag is limited, and the utilization ratio of recovery of heat is very low, has caused a large amount of wastes of heat.The Chinese invention patent application discloses a kind of recovery of heat that utilizes water cooled slag in containing slag ladle, the technology that the superheated vapour of generation is used to generate electricity for No. 200710158330.3.Can play certain used heat on this technical know-how and utilize effect, but very inconvenience in actually operating, and this technology belongs to interruption work.
Summary of the invention
Problem and shortage at existing slag fragmentation and recovery of heat existence; the purpose of this invention is to provide a kind of spraying water with high pressure slag is carried out preliminary fragmentation and cooling; the steel ball that place ball milling cylinder the inside is done irregularly and is freely collided; to the further granulation of slag; slag notch is provided with the sub-material orifice plate is scattered in above the heat exchangers at different levels slag comparatively equably; heat exchanger is realized the step of slag used heat is reclaimed and utilization; when improving the steel scrap rate of recovery, improve a kind of slag fragmentation and the heat reclamation device of slag waste heat recovery rate significantly.
Basic ideas of the present invention are: the liquid steel slag of coming out of the stove is at first sprayed by water jets under high pressure in spray chamber, injection water behind the absorption heat becomes hyperthermia and superheating steam, hyperthermia and superheating steam is used to heat other water vapour or liquid water, liquid steel slag is cooled and is solidified as steel slag particle, and steel slag particle enters the ball milling cylinder because of the acting in conjunction of gravity and vibration.The steel ball that freely collides is made to the further granulation of steel slag particle in ball milling cylinder the inside.Slag after the granulation enters one-level sensible heat switch room, secondary sensible heat switch room and three grades of sensible heat switch rooms one by one by the sub-material orifice plate; temperature range difference according to the steel slag particle after the granulation; in each sensible heat switch room corresponding interchanger is set respectively; mobile water is vaporized or is heated to different temperature grade in the different exchanger pipes; be respectively applied for generating, air conditioner refrigerating or floor heating, domestic water etc.; simultaneously, slag progressively is cooled to normal temperature, and transports to the slag field by the slag car.
The technical solution used in the present invention is: a kind of slag fragmentation and heat reclamation device is characterized in that this device comprises: an integrated filling, and integrated abhiseca portion is provided with opening for feed, venting port, and integrated filling 48 bottoms are provided with terminal slag notch;
In the integrated filling, top is separated into spray chamber by the collection slag plate 5 that is obliquely installed, and one or more water jets are housed in the spray chamber, and collection slag plate lowest part is provided with the one-level slag notch, and the one-level slag notch is communicated with a slag trapping box after passing integrated filling;
In the integrated filling, also be provided with secondary slag notch and three grades of slag notches from top to bottom successively;
The collection slag plate be positioned at the secondary slag notch of collection below the slag plate and surround one-level sensible heat switch room;
In the one-level sensible heat switch room, the ball milling cylinder is equipped with on top, ball milling cylinder one end is connected with motor shaft, the ball milling cylinder the other end is connected with tubular shaft, and slag trapping box bottom is provided with discharge port, and discharge port is communicated with the crusher chamber of ball milling cylinder after passing the cavity of tubular shaft, wherein, have the sidewall sieve aperture on the sidewall of one side of ball milling cylinder, sidewall is connected by bolt with the ball milling cylinder, and sidewall is connected by keyway with motor shaft;
In the one-level sensible heat switch room, below the ball milling cylinder, be provided with sieve plate, be provided with slag-high-temperature heat-exchanging below the sieve plate;
Secondary slag notch and three grades of slag notches surround secondary sensible heat switch room, are provided with slag-middle high-temperature heat-exchanging in the secondary sensible heat switch room;
Three grades of slag notches and terminal slag notch surround three grades of sensible heat switch rooms, are provided with slag-middle cryogenic heat exchanger in three grades of sensible heat switch rooms;
Venting port is connected by the inlet end of pipeline with a suction pump, and the suction pump exhaust side is communicated with interchanger C after by pipeline connection interchanger D again, is communicated to the moisturizing pond at last, is provided with water pump C, and water pump C feed-water end is arranged in the moisturizing pond, and the water side connects water jet;
Slag-high-temperature heat-exchanging one end is connected with generator after passing interchanger D by pipeline, and then is communicated with interchanger E, and interchanger E is by pipeline connection interchanger A, and interchanger A is communicated with slag-high-temperature heat-exchanging the other end by water pump D and constitutes circulation line;
Slag-middle high-temperature heat-exchanging one end passes interchanger E connection unit cooler or floor heating unit after passing interchanger C by pipeline again, and unit cooler or floor heating unit are communicated with slag-middle high-temperature heat-exchanging the other end by water pump B and constitute circulation line;
Slag-middle cryogenic heat exchanger one end passes by pipeline and passes interchanger A again behind the moisturizing pond and meet the user, another termination city planting ductwork of slag-middle cryogenic heat exchanger.
Further scheme is: be provided with material distributing plate A below the secondary slag notch, have sieve aperture on the material distributing plate A, be provided with material distributing plate B below three grades of slag notches, have sieve aperture on the material distributing plate B.
Advantage of the present invention is:
The present invention has taken into account the fragmentation and the waste heat recovery of slag simultaneously.Fragmentation to slag is carried out stage by stage, utilize water jet inject high pressure water to tear liquid steel slag so that slag is carried out preliminary fragmentation, slag after the preliminary fragmentation enters in the ball milling cylinder, and further is broken into less steel slag particle, and the organic efficiency of steel scrap is reached more than 90%; The waste heat recovery of slag is carried out stage treatment according to slag in the temperature conditions in each stage, wherein oven-fresh high temperature slag is produced high-temperature steam and is used for engine power generation, high-temperature water is used for air conditioner refrigerating or floor heating in the slag production after temperature reduces, water at low temperature domestic water in the slag production after temperature reduces once more, as be used for shower or other domestic water etc., make full use of the heat of recovery, its waste heat recovery rate reaches about 90%.
Description of drawings
Fig. 1 is a system flowchart of the present invention.
Fig. 2 is an A-A sectional drawing of the present invention.
Fig. 3 is a material distributing plate vertical view of the present invention.
Among the figure: 1, spray chamber, 2, water jet, 3, water-in, 4, variable valve A, 5, the collection slag plate, 6, motor shaft, 7, the one-level slag notch, 8, steel ball, 9, the ball milling cylinder, 10, variable valve B, 11, slag-high-temperature heat-exchanging, 12, sieve plate, 13, material distributing plate A, 14, the secondary slag notch, 15, variable valve C, 16, variable valve D, 17, the slag car, 18, terminal slag notch, 19, water pump A, 20, water pump B, 21, slag-middle cryogenic heat exchanger, 22, slag-middle high-temperature heat-exchanging, 23, secondary sensible heat switch room, 24, the moisturizing pond, 25, water pump C, 26, water pump D, 27, interchanger A, 28, interchanger B, 29, interchanger C, 30, interchanger D, 31, vacuum breaker, 32, suction pump, 33, venting port, 34, opening for feed, 35, generator, 36, interchanger E, 37, unit cooler or floor heating unit, 38, slag trapping box, 39, safety valve, 40, material distributing plate B, 41, three grades of sensible heat switch rooms, 42, liner plate, 43, the sidewall sieve aperture, 44, sidewall, 45, sieve aperture, 46, one-level sensible heat switch room, 47, three grades of slag notches, 48, integrated filling.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
As Fig. 1, a kind of slag fragmentation and heat reclamation device is characterized in that this device comprises: an integrated filling 48, and integrated filling 48 tops are provided with opening for feed 34, venting port 33, and integrated filling 48 bottoms are provided with terminal slag notch 18;
In the integrated filling 48, top is separated into spray chamber 1 by the collection slag plate 5 that is obliquely installed, and water jet 2 is housed in the spray chamber 1, and collection slag plate 5 lowest parts are provided with one-level slag notch 7, and one-level slag notch 7 passes integrated filling 48 backs and is communicated with a slag trapping box 38;
In the integrated filling 48, also be provided with secondary slag notch 14 and three grades of slag notches 47 from top to bottom successively;
In the one-level sensible heat switch room 46, ball milling cylinder 9 is equipped with on top, ball milling cylinder 9 one ends are connected with motor shaft 6, ball milling cylinder 9 the other ends are connected with tubular shaft, and slag trapping box 38 bottoms are provided with discharge port, and discharge port is communicated with the crusher chamber of ball milling cylinder 9 after passing the cavity of tubular shaft, wherein, have sidewall sieve aperture 43 on the sidewall 44 of one side of ball milling cylinder 9, sidewall 44 and ball milling cylinder 9 are connected by bolt, and sidewall 44 and motor shaft 6 are connected by keyway;
In the one-level sensible heat switch room 46, below ball milling cylinder 9, be provided with sieve plate 12, be provided with slag-high-temperature heat-exchanging 11 below the sieve plate 12;
Three grades of slag notches 47 surround with terminal slag notch 18 and are provided with slag-middle cryogenic heat exchanger 21 in 41, three grades of sensible heat switch rooms 41, three grades of sensible heat switch rooms;
Slag-high-temperature heat-exchanging 11 1 ends are connected with generator 35 after passing interchanger D30 by pipeline, and then connection interchanger E36, interchanger E36 is by pipeline connection interchanger A27, and interchanger A27 is communicated with slag-high-temperature heat-exchanging 11 the other ends by water pump D26 and constitutes circulation line;
Slag-middle high-temperature heat-exchanging 22 1 ends pass interchanger E36 connection unit cooler or floor heating unit 37 after passing interchanger C29 by pipeline again, and unit cooler or floor heating unit 37 are communicated with slag-middle high-temperature heat-exchanging 22 the other ends by water pump B20 and constitute circulation line;
Slag-middle cryogenic heat exchanger 21 1 ends pass by pipeline and pass interchanger A27 again behind the moisturizing pond 24 and meet the user, slag-middle cryogenic heat exchanger 21 another termination city planting ductworks.
Be provided with material distributing plate A13 below the secondary slag notch 14, have on the material distributing plate A13 and be provided with material distributing plate B40 below 45, three grades of slag notches 47 of sieve aperture, have sieve aperture 45 on the material distributing plate B40.
In the present invention, a side on top has the integrated filling 48 of slag trapping box 38, and integrated filling 48 sets gradually spray chamber 1, one-level sensible heat switch room 46, secondary sensible heat switch room 23 and three grades of sensible heat switch rooms 41 from top to down.Bottom one side of spray chamber 1 has water jet 2, water jet 2 is 30 degree or 45 degree are installed, and top is provided with slag inlet 34 and safety valve 39, and the bottom of spray chamber 1 is provided with the collection slag plate 5 with certain slope, the upper end is provided with venting port 33, and the same side of lower end is provided with one-level slag notch 7 and slag trapping box 38.One-level sensible heat switch room 46 is set below the spray chamber 1.The top of one-level sensible heat switch room 46 is provided with ball milling cylinder 9, sieve plate 12 is set below the ball milling cylinder 9, one-level slag notch 7 communicates with slag trapping box 38, slag trapping box 38 communicates with the inside of ball milling cylinder 9, slag-high-temperature heat-exchanging 11 is set below the sieve plate 12,46 lower ends, one-level sensible heat switch room are provided with secondary slag notch 14, and secondary slag notch 14 is fixed with material distributing plate A13, and material distributing plate A13 communicates with secondary sensible heat switch room 23.Be provided with slag-middle high-temperature heat-exchanging 22 in the secondary sensible heat switch room 23, the lower end is provided with 47, three grades of slag notches 47 of three grades of slag notches and is fixed with material distributing plate B40, and material distributing plate B40 communicates with three grades of sensible heat switch rooms 41.Be provided with slag-middle cryogenic heat exchanger 21 in three grades of sensible heat switch rooms 41, the bottom is provided with terminal slag notch 18, is furnished with the slag car 17 under the terminal slag notch 18 at any time.Be provided with moisturizing pond 24, water at low temperature interchanger B28 in having in the moisturizing pond 24; Be provided with suction pump 32, be used to aspirate the hyperthermia and superheating steam that spray chamber 1 produces; Be provided with generator 35, be used for the high-temperature steam generating; Be provided with interchanger D30, be used for carrying out between superheated vapour and the high-temperature steam heat exchange; Be provided with interchanger C29, be used for carrying out between superheated vapour and the high-temperature water heat exchange; Be provided with interchanger E36, be used for generator backwater and high-temperature water and carry out heat exchange; Be provided with interchanger A27, be used for carrying out between generator backwater and the water at low temperature heat exchange; Be provided with water pump C25, be used for providing power to the spray water of spray chamber 1; Be provided with water pump D26, the water cycle that water pump D26 carries out heat exchange for one-level sensible heat switch room 46 provides power; Be provided with water pump B20, the water cycle that water pump B20 carries out heat exchange for secondary sensible heat switch room 23 provides power; Be provided with water pump A19, the water cycle that water pump A19 carries out heat exchange for three grades of sensible heat switch rooms 41 provides power;
Wherein:
The one-level slag notch 7 of A, spray chamber 1 communicates with ball milling cylinder 9 by slag trapping box 38, one end of ball milling cylinder 9 has sidewall 44, sidewall 44 is provided with sidewall sieve aperture 43, sidewall sieve aperture 43 communicates with one-level sensible heat switch room 46, the secondary slag notch 14 of one-level sensible heat switch room 46 is communicated with secondary sensible heat switch room 23 by material distributing plate A13, three grades of slag notches 47 of secondary sensible heat switch room 23 communicate with three grades of sensible heat switch rooms 41 by material distributing plate B40, and three grades of sensible heat switch rooms 41 communicate with the slag car 17 by terminal slag notch 18;
B, be provided with 4 tunnel water routes (steam) pipeline: first water route (steam) pipeline is by behind the venting port 33 of spray chamber 1, by entering water jet 2 behind suction pump 32, vacuum breaker 31, superheated vapour-high-temperature steam interchanger D30, superheated vapour-middle high-temperature water interchanger C29, moisturizing pond 24, water pump C25, variable valve A4, the water-in 3, water jets under high pressure is sprayed successively by water jet 2; Second water route (steam) pipeline is by behind the slag-high-temperature heat-exchanging 11 of one-level sensible heat switch room 46, pass through hot steam-high-temperature steam interchanger D30, generator 35, generator backwater-middle high-temperature heat-exchanging E36, generator backwater-middle cryogenic heat exchanger A27, water pump D26, variable valve B10 successively, and then get back to the slag-high-temperature heat-exchanging 11 of one-level sensible heat switch room 46; The 3rd waterway pipe is by behind the slag-middle high-temperature heat-exchanging 22 of secondary sensible heat switch room 23, pass through hot steam-middle high-temperature water interchanger C29, generator backwater-middle high-temperature heat-exchanging E36, air conditioning unit (floor heating unit) 37, water pump B20, variable valve C15 successively, and then get back to the slag-middle high-temperature heat-exchanging 22 of secondary sensible heat switch room 23; The 4th waterway pipe is by the slag-middle cryogenic heat exchanger 21 of water pump A19 conveying by entering three grades of sensible heat switch rooms 41 behind the variable valve D16, successively by middle water at low temperature interchanger B28, generator backwater-middle cryogenic heat exchanger A27 in the moisturizing pond 24, connect user's domestic water pipe network then then;
One end of C, spray chamber 1 is provided with slag inlet 34, venting port 33 and safety valve 39, and the other end is provided with one-level slag notch 7, and the bottom is provided with the collection slag plate 5 of certain slope, and collection slag plate 5 connects slag trapping box 38.
One end of ball milling cylinder 9 is fixing by screw and sidewall 44, and the sieve aperture 43 that is evenly distributed is arranged on the sidewall, and sidewall 44 joins by keyway and motor shaft 6, and motor shaft 6 is direct-connected with motor; The other end of ball milling cylinder 9 communicates with slag trapping box 38.
Slag-high-temperature heat-exchanging 11, slag-middle high-temperature heat-exchanging 22, slag-middle cryogenic heat exchanger 21 are sensible heat exchanger.
The steel ball 8 that can freely collide is placed in ball milling cylinder 9 the insides.
In conjunction with Fig. 1, Fig. 2 and Fig. 3, ball milling cylinder 9 has liner plate 42; One end of ball milling cylinder 9 is fixed with sidewall 44, and sidewall 44 is provided with sidewall sieve aperture 43, and ball milling cylinder 9 joins by keyway and motor shaft 6 at the sidewall 44 of this end, and the rotation of motor drives 9 rotations of ball milling cylinders by motor shaft 6; Slag after the granulation can enter sieve plate 12 from sidewall sieve aperture 43, and slag is unrestrained comparatively equably to one-level sensible heat switch room 46 by the perforate of sieve plate 12; The other end of ball milling cylinder 9 is a tubular shaft, and the slag notch of slag trapping box 38 stretches into ball milling cylinder 9 inside by tubular shaft.Entered slag trapping box 38 by the slag of preliminary granulation by collection slag plate 5 and one-level slag notch 7, the slag of slag trapping box 38 the insides can directly enter ball milling cylinder 9; Ball milling cylinder 9 and liner plate 42 are fixed together, and when ball milling cylinder 9 rolled, liner plate 42 was done synchronous rolling with ball milling cylinder 9, and steel ball 8 is placed in liner plate 42 the insides, and the rolling of ball milling cylinder 9 impels steel ball 8 freely to collide.
Material distributing plate A13 and material distributing plate B40 are identical, and A13 is described with material distributing plate.Material distributing plate A13 upper surface is made circular-arc, just as at the bottom of the mouth down up the pot, the surface of material distributing plate A13 is provided with sieve aperture 45, the pore size of sieve aperture 45 differs, the aperture of material distributing plate A13 intermediary sieve aperture 45 is little, the aperture of periphery is big, and slag is unrestrained comparatively equably in secondary sensible heat switch room 23 from the sieve aperture of material distributing plate A13, and carries out heat exchange with heat exchanger 11.Material distributing plate A13 and material distributing plate B40 are separately fixed at secondary slag notch 14 and three grades of slag notch 47 places.
Workflow of the present invention is:
The working process of ball milling cylinder 9: an end of ball milling cylinder 9 is provided with sidewall 44, sidewall 44 is provided with the sidewall sieve aperture 43 that is evenly distributed, and sidewall 44 is direct-connected by keyway and motor shaft 6, the rotation of motor drives ball milling cylinder 9 and rolls, that is to say that ball milling cylinder 9 and liner plate 42 will do synchronous continuous rotation along axis, steel ball 8 is placed in liner plate 42 the insides; The other end of ball milling cylinder 9 is a tubular shaft, and the slag notch of slag trapping box 38 stretches into the inside of ball milling cylinder 9 by tubular shaft.In the time of ball milling cylinder 9 high speed rotating, steel ball 8 just can randomly in ball milling cylinder 9 freely collide.
The flow process of slag: liquid steel slag is dumped into spray chamber 1 from slag inlet 34 more than 1400 ℃, the high speed water jet impact more than the 10m/s that the liquid steel slag that enters spray chamber 1 is sprayed by water jet 2.In this process, liquid steel slag is torn and lowers the temperature, be cooled to the steel slag particle about 800 ℃, steel slag particle is scattering under action of gravity on the collection slag plate 5 with certain obliquity, enter in the slag trapping box 38 by slag notch 7 then, slag in the slag trapping box 38 enters in the liner plate 42 of ball milling cylinder 9, and by steel ball 8 random collisions, so slag is further crashed and refinement slag in liner plate 42; Simultaneously, because the collision of steel ball 8 can cause the vibrations of collection slag plate 5 to a certain extent, this is equivalent to be provided with a vibrator to collection slag plate 5, so just can make slag enter into slag trapping box 38 from collection slag plate 5 better, and the slag in the slag trapping box 38 also enters the liner plate 42 of ball milling cylinder 9 easily.Further the slag after the refinement is fallen on the sieve plate 12 by the sidewall sieve aperture 43 of sidewall 44, sieve plate 12 is the certain slope setting, and even perforate is arranged above the sieve plate 12, slag is unrestrained comparatively equably to the slag-high-temperature heat-exchanging 11 of one-level sensible heat switch room 46 by sieve plate 12, the heat of slag is absorbed by mobile water in the pipeline of slag-high-temperature heat-exchanging 11, the temperature of steel slag particle is reduced to about 300 ℃, discharge from the secondary slag notch 14 of one-level sensible heat switch room 46 then, the slag that comes out from one-level sensible heat switch room 46 enters into secondary sensible heat switch room 23 by material distributing plate A13, the heat of slag also continues to be absorbed by flowing water in the pipeline of the slag in the secondary sensible heat switch room 23-middle high-temperature heat-exchanging 22, the temperature of slag is reduced to about 150 ℃, discharge from three grades of slag notches 47 then, and enter three grades of sensible heat switch rooms 41 through material distributing plate B40.The slag that comes out from secondary sensible heat switch room 23 continue by slag-cryogenic heat exchanger 21 absorb heats, the temperature of slag becomes normal temperature, and discharges from terminal slag notch 18, by the slag car 17 steel slag particle of normal temperature is transported to pit then.
The workflow in first water route (steam): by the high speed water column of water jet 2 ejection at spray chamber 1 and liquid steel slag thorough mixing, current are being vaporized rapidly behind the heat that has absorbed liquid steel slag and are being become superheated vapour more than 600 ℃, superheated vapour is discharged by venting port 33, and enter interchanger D30 by pipeline and (be provided with suction pump 32 and vacuum breaker 31 between venting port 33 and the interchanger D30, the superheated vapour that spray chamber 1 produces is aspirated in suction pump 32 on the one hand, the mobile transmission ﹠ distribution power that provides of steam is provided on the other hand, vacuum breaker 31 prevents opposing steam flow), in interchanger D30, the heat of superheated vapour is absorbed, and temperature is reduced to about 350 ℃.Enter into interchanger C29 then, interchanger C29 continues to absorb the heat of superheated vapour, and superheated vapour becomes the high-temperature water about 100 ℃.High-temperature water continues to enter moisturizing pond 24 and is continued to absorb heat, and temperature is reduced to normal temperature.The water in first water route in moisturizing pond 24 by after sediment and the moisturizing, be transported to water-in 3 (between be provided with variable valve A4 regulate flow) by water pump C25 supercharging, enter water jet 2 then, continue to the liquid steel slag jet water course, finish first water route (steam) circulation, so recirculation.
The workflow in second water route (steam): enter in the slag-high-temperature heat-exchanging 11 of one-level sensible heat switch room 46 after the water yield adjusting through variable valve B10, vaporization rapidly behind the heat of absorption steel slag particle, become the hyperthermia and superheating steam about 300 ℃, enter into the heat that interchanger D30 absorbs the first water route steam by pipeline then, temperature enters generator for electricity generation after being elevated to about 450 ℃, backwater after the generating (steam) at first enters interchanger E36, the heat of backwater is absorbed in interchanger E36, the generator return water temperature continues to enter interchanger A27 after reducing to about 100 ℃, in interchanger A27, the heat of backwater is absorbed once more, temperature is reduced to after the normal-temperature water about 50 ℃ by water pump D26 supercharging transmission ﹠ distribution to variable valve B10, and enter slag-high-temperature heat-exchanging 11 once more and carry out heat exchange, finish the circulation of second water route, so recirculation.
The workflow in the 3rd water route: enter in the slag-middle high-temperature heat-exchanging 22 of secondary sensible heat switch room 23 after the water yield adjusting through variable valve C15, the temperature rising is about 60 ℃ behind the heat of absorption steel slag particle, enter the heat that interchanger C29 continues to absorb the first water route recirculated water then, temperature is upgraded to about 75 ℃, water after the intensification continues to enter the heat that interchanger E36 absorbs the generator backwater, and temperature is elevated to about 85 ℃ and is transported in the unit cooler (or floor heating unit) 37.In unit cooler (or floor heating unit) 37, after being reduced for about 35 ℃, heat in the water is transported to the heat that absorbs slag in the interchanger 22 by water pump B20, variable valve C15 carries out water yield adjusting before entering interchanger 22, finishes the circulation of the 3rd water route, so recirculation.
The workflow in the 4th water route: be delivered to variable valve D16 after the tap water process water pump A19 supercharging, enter in the slag-middle cryogenic heat exchanger 21 of three grades of sensible heat switch rooms 41 after the water yield adjusting by variable valve D16, the temperature rising is about 35 ℃ behind the heat of absorption steel slag particle, enter the heat that interchanger B28 continues to absorb the first water route recirculated water then, temperature is upgraded to about 45 ℃, warm water after the intensification continues to enter the heat that absorbs the generator backwater among the interchanger A27, temperature is elevated between 55 ℃-60 ℃, and be transported to the user for shower or other domestic water etc., the water single of the 4th water-flow chart uses, and this process is not working cycle.
Claims (2)
1. slag fragmentation and heat reclamation device is characterized in that this device comprises: an integrated filling (48), and integrated filling (48) top is provided with opening for feed (34), venting port (33), and integrated filling (48) bottom is provided with terminal slag notch (18);
In the integrated filling (48), top is separated into spray chamber (1) by the collection slag plate (5) that is obliquely installed, one or more water jets (2) are housed in the spray chamber (1), collection slag plate (5) lowest part is provided with one-level slag notch (7), and one-level slag notch (7) passes integrated filling (48) back and is communicated with a slag trapping box (38);
In the integrated filling (48), also be provided with secondary slag notch (14) and three grades of slag notches (47) from top to bottom successively;
Collection slag plate (5) the secondary slag notch (14) following with being positioned at collection slag plate (5) surrounds one-level sensible heat switch room (46);
In the one-level sensible heat switch room (46), ball milling cylinder (9) is equipped with on top, ball milling cylinder (9) one ends are connected with motor shaft (6), ball milling cylinder (9) the other end is connected with tubular shaft, slag trapping box (38) bottom is provided with discharge port, discharge port is communicated with the crusher chamber of ball milling cylinder (9) after passing the cavity of tubular shaft, wherein, have sidewall sieve aperture (43) on the sidewall (44) of one side of ball milling cylinder (9), sidewall (44) is connected by bolt with ball milling cylinder (9), and sidewall (44) is connected by keyway with motor shaft (6);
In the one-level sensible heat switch room (46), below ball milling cylinder (9), be provided with sieve plate (12), be provided with slag-high-temperature heat-exchanging (11) below the sieve plate (12);
Secondary slag notch (14) surrounds secondary sensible heat switch room (23) with three grades of slag notches (47), is provided with slag-middle high-temperature heat-exchanging (22) in the secondary sensible heat switch room (23);
Three grades of slag notches (47) surround three grades of sensible heat switch rooms (41) with terminal slag notch (18), are provided with slag-middle cryogenic heat exchanger (21) in three grades of sensible heat switch rooms (41);
Venting port (33) is connected by the inlet end of pipeline with a suction pump (32), suction pump (32) exhaust side is communicated with interchanger C (29) after by pipeline connection interchanger D (30) again, be communicated to moisturizing pond (24) at last, be provided with water pump C (25), water pump C (25) feed-water end is arranged in moisturizing pond (24), and the water side connects water jet (2);
Slag-high-temperature heat-exchanging (11) one ends pass interchanger D (30) back by pipeline and are connected with generator (35), and then connection interchanger E (36), interchanger E (36) is by pipeline connection interchanger A (27), and interchanger A (27) is communicated with slag-high-temperature heat-exchanging (11) the other end by water pump D (26) and constitutes circulation line;
Slag-middle high-temperature heat-exchanging (22) one ends pass interchanger E (36) connection unit cooler or floor heating unit (37) after passing interchanger C (29) by pipeline again, and unit cooler or floor heating unit (37) are communicated with slag-middle high-temperature heat-exchanging (22) the other end by water pump B (20) and constitute circulation line;
Slag-middle cryogenic heat exchanger (21) one ends pass by pipeline and pass interchanger A (27) again behind the moisturizing pond (24) and meet the user, slag-another termination city planting ductwork of middle cryogenic heat exchanger (21).
2. slag fragmentation according to claim 1 and heat reclamation device, it is characterized in that being provided with material distributing plate A (13) below the secondary slag notch (14), have sieve aperture (45) on the material distributing plate A (13), be provided with material distributing plate B (40) below three grades of slag notches (47), have sieve aperture (45) on the material distributing plate B (40).
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| CN102628586A (en) * | 2012-04-18 | 2012-08-08 | 长沙凯瑞重工机械有限公司 | System for generating power by means of waste heat of steel slag |
| CN102864252A (en) * | 2012-09-13 | 2013-01-09 | 清华大学 | Slag granulation and sensible heat recovery method and system |
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| CN110205416A (en) * | 2019-05-17 | 2019-09-06 | 昆明理工大学 | A kind of compound granulation milling method of high-temperature slag multiple-phase jet |
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| CN108165686A (en) * | 2018-01-13 | 2018-06-15 | 秦皇岛点知汇科技有限公司 | A kind of drum-type slag granulation and residual neat recovering system |
| CN109365090A (en) * | 2018-11-30 | 2019-02-22 | 航天金洲（北京）能源科技有限公司 | Steel slag hot crushing device |
| CN109365090B (en) * | 2018-11-30 | 2023-12-29 | 中冶节能环保有限责任公司 | Steel slag thermal crushing device |
| CN110205416A (en) * | 2019-05-17 | 2019-09-06 | 昆明理工大学 | A kind of compound granulation milling method of high-temperature slag multiple-phase jet |
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