CN107190110A - A kind of high-temperature slag dry colling granulation residual neat recovering system and method - Google Patents
A kind of high-temperature slag dry colling granulation residual neat recovering system and method Download PDFInfo
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- CN107190110A CN107190110A CN201710328471.9A CN201710328471A CN107190110A CN 107190110 A CN107190110 A CN 107190110A CN 201710328471 A CN201710328471 A CN 201710328471A CN 107190110 A CN107190110 A CN 107190110A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The present invention relates to a kind of high-temperature slag dry colling granulation residual neat recovering system and method.Present invention aim to address require high-temperature slag viscosity that the poor technical problem of larger, equipment durability is lost in higher, high-temperature service present in existing high-temperature slag dry colling granulation residual neat recovering system and method.The technical scheme is that：First cold solid impurity particle is laid on the chassis of circulatory motion, high-temperature slag flows to cold slag blanket upper surface by fixed slag bucket, cold slag blanket is with trolley movement, and high-temperature slag forms thin layer on cold slag blanket automatically；Provided with water cooling tube and plough slag device above high temperature melting slag blanket, be conducive to radiation heat transfer and break；Cold wind exchanges heat through cold slag blanket with high temperature melting slag blanket, realizes high-temperature slag cooled and solidified；The solidified slag high temperature sludge operated with chassis, will be shoveled in heat exchanger automatically by the fixed shovel slag device in its top, and carry out secondary heat exchange in heat exchanger, is completed the cooling granulation of high-temperature slag, is easy to cool down the follow-up deep processing of grain slag.
Description
Technical field
The present invention relates to high-temperature slag cooling granulation and waste heat recovery machining field, specially a kind of high-temperature slag is done
Method cooling granulation residual neat recovering system and method.
Background technology
High-temperature slag is the byproduct in pyrolytic semlting and thermal power generation production process, the pact that such as smelting iron and steel is produced
1500-1600 DEG C or so of high temperature converter slag and blast furnace slag.One common feature of these high-temperature slags is exactly to contain to have big
The heat energy and inorganic mineral of amount, can be used as high-grade energy and resource recycling.In addition, the yield of these high temperature sludges is very huge
Greatly, energy-saving and emission-reduction and the solid waste resources effective utilization of industrial enterprise are directly connected to.Normal conditions, often refining 1 ton of steel can produce
100-150kg high-temperature steel slag, slag per ton contains the heat equivalent to 65kg standard coals；300- can be produced by often refining 1 ton of iron
350kg high temperature blast furnace slag, blast furnace slag per ton contains the heat equivalent to 68kg standard coals.According to statistics, China produces height every year
About 4.5 hundred million tons of warm steel slag, how high efficiente callback, using the heat in these high-temperature slags, is that pyrolytic semlting industry energy conservation subtracts
One of important technology developing direction of row.
But, nearly all steel plant fail to realize heat recovery and utilization in high-temperature steel slag both at home and abroad at present, its
Main reason is that the technology and equipment system without this respect.In existing high-temperature metallurgical slag treatment technology, mainly including water quenching
Method, hot application method, vexed slag method, wind quenching method etc., but these methods can not realize that the high efficiente callback of high temperature sludge heat is utilized.
Authorization Notice No. CN200940148Y discloses a kind of centrifugal treatment equipment for steel slag, Authorization Notice No.
CN102643936B discloses a kind of granulating steel slag, modification, Exposure degree integral system and process, Authorization Notice No.
CN1888081B discloses the granulating method and its device of slag in a kind of liquid blast furnace heat recovering process, Authorization Notice No.
CN100424187C discloses a kind of liquid blast furnace slag heat recovering apparatus and method, and Authorization Notice No. CN203559060U is disclosed
A kind of slag pilletizer, the high temperature sludge processing method that above-mentioned patent is proposed belongs to rotating centrifugal shotting, is required to height
Warm slag should possess good fluidity, easily occur blocking for the bad high temperature sludge of mobility, lump, being granulated unequal technology and ask
Topic.
Notification number CN102200267A discloses a kind of physical heat recovery process of high-temperature material, and its slag ladle pours into liquid slag
Formation sheet-shaped molten high temperature sludge in the slag car is imported into slag chute；The heat absorption tube bank for absorbing radiations heat energy is disposed with radiation chamber；
Arrange that the convection current of high-performance heat transfer components the absorption radiations heat energy from the slag car and the hot blast from primary radiation room is changed in heat transfer chamber
Heat, the air after heat exchange is taken away by air-introduced machine from air outlet slit, into conventional convection heating surface, and hot blast is changed with high temperature heat transfer element
After heat air is discharged into through air-introduced machine；The slag car enters after water quenching chamber, and the slag having been cured is burst to form powder by cooling water, will wherein
The heat contained is more discharged.High temperature sludge is paved into sheet by the technique using the method for melting high temperature sludge flow by gravity,
It is difficult to realize so for the high temperature sludge that viscosity is larger, mobility is not good；Slag is burst into shape with water quenching method in the technique
The technological deficiencies such as the quality that moisture contamination, equipment corrosion and reduction energy recovery are utilized easily are produced into powder.In addition, the technique
Gas after heat exchange is directly discharged into air, necessarily causes the dissipation and loss for reclaiming heat, reduces the heat recovery efficiency of system.
Authorization Notice No. CN103966372B discloses a kind of liquid steel slag solidification distributed processing system and a kind of liquid steel
Slag solidifies distributed processing system and method, and it is mixed first with solidification dispersant with high temperature sludge, realizes the cold of high temperature sludge
But solidify and scattered, then carry out further cooling granulation and heat recovery to solidification slag again.The difficult point of the above method exists
During the cooling and solidifying of high temperature sludge, inevitable high temperature mixing apparatus is directly contacted with high temperature sludge, is influenceed to a certain extent
The service life of equipment and the continuous-stable of production.
Notification number CN104988255A discloses the method and apparatus of a kind of liquid slag waste heat recovery and tailings ultra micro efflorescence
System.It is mixed first with solidification dispersant with high temperature sludge, is realized the cooling and solidifying of high temperature sludge and is disperseed, then right again
Solidify slag and carry out further cooling granulation and heat recovery；Recuperated gas is realized and recycled, by the high temperature sludge of recovery
Waste heat is converted to superheated steam, and the superheated steam is used for into the ultramicro grinding of tailings after cooling down, and tailings is prepared into Ultramicro-powder
Material, is advantageously implemented the high efficiente callback and efficiently utilization of heat, while being advantageously implemented the efficient utilization of tailings.But, should
Method still has that " during the cooling and solidifying of high temperature sludge, inevitable hardware is directly contacted with high temperature sludge, to a certain degree
The technical barrier of the service life of upper influence equipment and the continuous-stable of production ".
The content of the invention
High-temperature slag viscosity is required present invention aim to address what existing high temperature slag disposal system and method were present
Higher, high-temperature service is lost the poor technical problem of larger, equipment durability and is granulated waste heat there is provided a kind of high-temperature slag dry colling
Recovery system and method.
The present invention is for the technical scheme that is used of solution above-mentioned technical problem：A kind of high-temperature slag dry colling granulation is remaining
Heat recovery system, including：Maintenance tunnel, slag cooling bucket, high temperature melting slag bucket, water cooling tube, striker plate, plough slag device, shovel slag device, trolley rail
Road, blast pipe, cold air chamber, heat exchanger, deduster, circulating fan, annular chassis, stock chest, cold air chamber's side plate, slag notch, slip
Hopper and pillar；The maintenance tunnel is that, by the arched door loop tunnel of laying fireproof bricks, lower end is fixed and rest on the ground, and protects
Warm tunnel top is arch, and the subjacent on arch top is provided with some water cooling tubes；The slag cooling bucket is located at the top of maintenance tunnel
Portion and adjacent with slag notch, the high temperature melting slag bucket is located at the top of maintenance tunnel and, slag cooling bucket and high temperature adjacent with slag cooling bucket
Slag bucket is connected with the inner chamber of maintenance tunnel；The trolley track is located at the bottom of maintenance tunnel inner chamber, the annular chassis
Located at maintenance tunnel inner chamber bottom and on the trolley track, maintenance tunnel inner chamber both sides are fixed with pillar, the striker plate
It is fixed on the top of pillar, and the bottom surface of striker plate is in contact composition stock chest, the plough slag with the chassis panel of annular chassis
Device is located at the side on striker plate and positioned at high temperature melting slag bucket discharging opening along annular chassis traffic direction, and the shovel slag device is located at gear
On flitch and positioned at the discharge outlet of striker plate, the discharging opening of striker plate is connected with slag notch；The slag notch is located at insulation tunnel
The top of road side, and connected by the charging aperture for slipping hopper and heat exchanger；Cold air chamber's side plate is located at the bottom of pillar simultaneously
Below striker plate, cold air chamber's side plate and chassis panel, ground composition ring-type rectangle cold air chamber, two side lower parts of maintenance tunnel
Connected provided with blast pipe and blast pipe with cold air chamber；The discharging opening of heat exchanger is connected with follow-up slag disposal system；The slag notch
Also connected, the waste heat delivery outlet of heat exchanger is connected with afterheat utilizing system, exchanged heat by the top air inlet of pipeline and heat exchanger
The air outlet of device and the air inlet of deduster are connected, and the air outlet of deduster and the air inlet of circulating fan are connected, circulating fan
Air outlet be connected respectively with the bottom air inlet of heat exchanger with blast pipe.
Further, the annular chassis is made up of chassis panel, chassis support and wheel, and chassis panel is welded on chassis
On support, the lower end of chassis support is provided with wheel, and chassis panel is provided with and is available for the air holes that air-flow is passed through.
Further, the discharging opening of the high temperature melting slag bucket is higher 50-150 millimeters than the discharging opening of slag cooling bucket；High-temperature slag
The discharging opening length of bucket is smaller than the distance between both sides striker plate 50-100 millimeters.
Further, the plough slag device is the composite junction that 1 horizontal triangular pyramidal colter is combined with multiple vertical colters
Structure, and the cone end of horizontal triangular pyramidal colter and the welding of vertical colter afterbody interlude, the length of vertical colter is 50-150
Millimeter, the setting spacing of vertical colter is 100-200 millimeters, and it is 300- to plough the bottom surface of slag device with the distance of chassis panel top surface
600 millimeters.
Further, the shovel slag device is welded by two pieces of wear-resisting high-temperature steel plates, and one of steel plate is fixed on vertically
On the striker plate of both sides, and the side of steel plate and the tangent plane angle of striker plate discharging opening are 30-60 degree, and another block of steel plate is welded on perpendicular
Straight steel plate bottom, and be 135 degree with the angle of vertical steel plate, the distance of shovel slag device bottom surface and chassis panel top surface is 300-600
Millimeter.
Further, the air holes aperture on the chassis panel is 3-5 millimeters, and its percent opening is 20-30%.
A kind of method that high-temperature slag dry colling is granulated waste heat recovery, comprises the following steps：
1) first the cold solid impurity particle of granularity and water satisfied requirement is added in slag cooling bucket, while opening annular chassis and circulation
Blower fan, and it is filled with into water cooling tube cold water；
2) cold solid impurity particle forms the cold slag blanket of 300-600 mm of thickness by being fallen under slag cooling bucket in stock chest；
3) high-temperature slag is flowed into cold slag blanket upper surface by high temperature melting slag bucket, forms the high temperature melting of 50-150 mm of thickness
Slag blanket；
4) annular chassis horizontal annular operating, plough slag device carries out multiple break and upset to high-temperature slag solidification layer, realized
The cooling down of high temperature melting slag blanket, tentatively it is granulated and strengthens ventilative；
5) the high temperature melting slag blanket cooled down after granulation is shoveled out stock chest by shovel slag device, and by slipping in hopper inflow heat exchanger,
The cold wind entered by the lower air inlet of heat exchanger, the cold slag after secondary heat exchange, secondary heat exchange is carried out to the part slag particle and is entered
Follow-up slag disposal system carries out deep processing processing；
6) the cold solid impurity particle in part of walking is shoveled by shovel slag device, the cold solid impurity particle reuse produced by follow-up slag disposal system is supplemented,
Ensure the material balance of the cold solid impurity particle of cooling agent.
Further, the high-temperature slag is the blast furnace cinder, pneumatic steelmaking slag, electric furnace that temperature is more than 1300 degrees Celsius
Any one in steel-smelting clinker or coal furnace slag.
Further, the cold solid impurity particle is steel slag tailings, blast-furnace cinder, iron tailings, limestone tailing or sand particles
In any one；The particle diameter of the cold solid impurity particle is 5-100 millimeters, and moisture is less than 10%.
The beneficial effects of the invention are as follows：
1) present invention utilizes annular maintenance tunnel formula trolley movement shearing force and the deadweight of slag and cold slag in fixed slag bucket
Power, is laid to certain thickness cold slag blanket and high temperature melting slag blanket automatically, and high temperature melting slag blanket is laid on cold slag blanket upper surface, it is to avoid
High-temperature slag is directly contacted with dynamic load hardware, and the equipment durability problem that high-temperature slag cools down granulating technique is solved with this,
The universal adaptability that raising system is granulated to different viscosity high-temperature slag dry collings；
2) the hyperthermia radiation heat exchange of water cooling tube, the heat-exchange integrated method of gaseous exchange of cooling wind, increase heat exchange effect are utilized
Rate, realizes the cooling and solidifying of high temperature melting slag blanket；
3) by set it is fixed under bury the method for plough slag device, it is automatic real during the vehicle-mounted goods of annular table is moved horizontally
The rupture and upset of existing high-temperature slag solidification layer, the granulation for realizing high-temperature slag solidification layer are crushed, reinforcing gaseous exchange heat exchange；
4) exchanged heat by using full-dry method, the closed processing of whole process, heat exchange wind is recycled and the life of full-automatic continuous-stable
The methods such as production, are advantageously implemented the high efficiente callback of high temperature sludge waste heat, flow clean manufacturing and reduce environmental pollution.
Brief description of the drawings
Fig. 1 is the top view that high-temperature slag dry colling of the present invention is granulated residual neat recovering system；
Fig. 2 is Fig. 1 A-A faces sectional view；
Fig. 3 is Fig. 1 B-B faces sectional view.
In figure：1-slag cooling bucket；2-high temperature melting slag bucket；3-maintenance tunnel；4-water cooling tube；5-striker plate；6-plough slag
Device；7-shovel slag device；8-chassis panel；9-chassis support；10-wheel；11-trolley track；12-blast pipe；13-cold
Air compartment；14-heat exchanger；15-deduster；16-circulating fan；17-annular chassis；18-stock chest；19-cold air chamber side
Plate；20-slag notch；21-slip hopper；22-pillar.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As Figure 1-3, a kind of high-temperature slag dry colling granulation residual neat recovering system in the present embodiment, including：Protect
Warm tunnel 3, slag cooling bucket 1, high temperature melting slag bucket 2, water cooling tube 4, striker plate 5, plough slag device 6, shovel slag device 7, trolley track 11, blast pipe
12nd, cold air chamber 13, heat exchanger 14, deduster 15, circulating fan 16, annular chassis 17, stock chest 18, cold air chamber's side plate 19, go out
Cinder notch 20, slip hopper 21 and pillar 22；The maintenance tunnel 3 be internal layer by supporting frame with steel structure, outer layer by laying fireproof bricks and
Into arched door loop tunnel, lower end fixes and rest on the ground, and the top of maintenance tunnel 3 is arch, and the subjacent on arch top is set
There are some water cooling tubes 4, the water inlet of the water cooling tube 4 is connected with feed pump, and delivery port is connected with afterheat utilizing system；It is described cold
Slag bucket 1 is located at the top of maintenance tunnel 3 and adjacent with slag notch 20, the high temperature melting slag bucket 2 be located at the top of maintenance tunnel 3 and
Adjacent with slag cooling bucket 1, the inner chamber of slag cooling bucket 1 and high temperature melting slag bucket 2 with maintenance tunnel 3 is connected；The trolley track 11 is located at
The bottom of the inner chamber of maintenance tunnel 3, trolley track 11 is made up of rail；The annular chassis 17 is located under the inner chamber of maintenance tunnel 3
Portion is simultaneously located on trolley track 11, and annular chassis 17 is made up of chassis panel 8, chassis support 9 and wheel 10, and chassis panel 8 is welded
It is connected on chassis support 9, the lower end of chassis support 9 is provided with wheel 10, and annular chassis 17 can do annular fortune on trolley track 11
Dynamic, the power traction mechanism of annular chassis 17 is made up of motor, reductor, connecting shaft etc., and connecting shaft is connected with chassis support 9,
Motor drive connection axle drives chassis support 9 to move；Chassis panel 8 is provided with and is available for the air holes that air-flow is passed through, the air holes
Aperture is 3-5 millimeters, and percent opening is 20-30%；The inner chamber both sides of maintenance tunnel 3 are fixed with metal mainstay 22, the bottom of pillar 22
Fix on the ground, the striker plate 5 is fixed on the top of pillar 22, the striker plate 5 by inner lining refractory steel construction
Composition, with resistance to elevated temperatures, the bottom surface of striker plate 5 is in contact with the chassis panel 8 of annular chassis 17 and constitutes "U" shaped storing
Groove 18, mainly plays charge；The plough slag device 6 is located on striker plate 5 and positioned at the annular chassis in the discharging opening of high temperature melting slag bucket 2 edge
Side 0.5-1.5 meters of 17 traffic directions, and arranged in rows, often row's plough slag device 6 on the annular traffic direction of chassis 17 apart
0.5-1.5 meters；The shovel slag device 7 is located on striker plate 5 and positioned at the discharge outlet of striker plate 5, and the discharging opening of striker plate 5 is with going out
Cinder notch 20 is connected；The slag notch 20 is located at the top of the side of maintenance tunnel 3, and by slipping the charging of hopper 21 and heat exchanger 14
Mouth connection, the heat exchanger 14 is the elevated temperature vessel of an inner lining refractory, and its epimere is cold water pipe and high-temperature gas heat exchange
Area, its hypomere is high temperature sludge and cold wind heat transfer zone；Cold air chamber's side plate 19 is located at the lower section of bottom 5 of pillar 22, cold air chamber's side plate 19
With chassis panel 8, ground composition ring-type rectangle cold air chamber 13；Two side lower parts of maintenance tunnel 3 are provided with blast pipe 12 and blast pipe
12 connect with cold air chamber 13；The discharging opening of heat exchanger 14 is connected with follow-up slag disposal system；The slag notch 20 also passes through pipeline
It is connected with the upper air inlet of heat exchanger 14, the waste heat delivery outlet of heat exchanger 14 is connected with afterheat utilizing system, heat exchanger 14 goes out
Air port is connected with the air inlet of deduster 15, and the air outlet of deduster 15 is connected with the air inlet of circulating fan 16, circulating fan
16 air outlet is connected with the lower air inlet of heat exchanger 14 with blast pipe 12 respectively.
The liner high-temperature flame-proof insulation brick of high temperature melting slag bucket 2, discharging of the discharging opening than slag cooling bucket 1 of high temperature melting slag bucket 2
Mouth is high 50-150 millimeters；The discharging opening length of high temperature melting slag bucket 2 is smaller than the distance between the both sides striker plate 5 on chassis panel 8
50-100 millimeters, to ensure that high-temperature slag is paved with the 90% of cold slag blanket upper surface width；The width of the discharging opening of high temperature melting slag bucket 2
It is 1/5-1/20 with length ratio, it is ensured that slag smoothly discharges, and does not block, but also should not be too big, in order to avoid cause escape slag, the present embodiment
In, 2 meters of the charging aperture length of high temperature melting slag bucket 2 is wide 1 meter, and 1 meter of discharging opening length is wide 200 millimeters；2 meters of the charging aperture length of slag cooling bucket 1,
Wide 1 meter, 1 meter of discharging opening length is wide 300 millimeters；8 wide 1.5 meters of chassis panel, a diameter of 10 meters of panel inner circle, chassis running speed
For 3 ms/min, high-temperature slag residence time about 12 minutes on chassis, about 45 tons of processing high-temperature liquid state blast furnace slag ability/small
When.
The composite construction that the plough slag device 6 is welded for 1 horizontal triangular pyramidal colter and multiple vertical colters, and water
The cone end of flat triangular pyramidal colter is welded with vertical colter afterbody interlude, and the length of vertical colter is 50-150 millimeters, is erected
It is 100-200 millimeters to the setting spacing of colter, and the vertical colter position on adjacent two row plough slag device 6 is staggered, favorably
In uniformly upset high temperature melting slag blanket；It is 300-600 millimeters that the bottom surface of slag device 6, which is ploughed, with the distance of the top surface of chassis panel 8；Plough slag device 6
It is made up of high temperature resistant, wear-resistant steel, plays rupture high temperature slag blanket, the effect of the ventilative cooling of enhancing.
The shovel slag device 7 is welded by two pieces of wear-resisting high-temperature steel plates, and one of steel plate is fixed on both sides backgauge vertically
On plate 5, and the side of steel plate and the tangent plane angle of the discharging opening of striker plate 5 are 30-60 degree, and another block of steel plate is welded on vertical steel plate
Bottom, and be 135 degree with the angle of vertical steel plate, the distance of the bottom surface of shovel slag device 7 and the top surface of chassis panel 8 is 300-600 millimeters,
The installation site of shovel slag device 7 should meet the requirement shoveled high temperature melting slag blanket from stock chest 18.
The method that a kind of high-temperature slag dry colling in this implementation is granulated waste heat recovery, comprises the following steps：
1) first the cold solid impurity particle of granularity and water satisfied requirement is added in slag cooling bucket 1, while opening the annular He of chassis 17
Circulating fan 16, and it is filled with cold water into water cooling tube 4；
2) cold solid impurity particle forms the cold slag blanket of 300-600 mm of thickness by being fallen under slag cooling bucket 1 in stock chest 18；
3) high-temperature slag is flowed into cold slag blanket upper surface by high temperature melting slag bucket 2, forms the high temperature of 50-150 mm of thickness
Molten slag layer；
4) the annular horizontal annular of chassis 17 operating, the high temperature melting slag blanket of plough slag 6 pairs of solidifications of device carries out multiple break and upset,
Realize cooling down, being tentatively granulated and strengthen ventilative for high temperature melting slag blanket；
5) the high temperature melting slag blanket cooled down after granulation is shoveled out stock chest 18 by shovel slag device 7, and flows into heat exchange by slipping hopper 21
In device 14, the cold wind entered by the lower air inlet of heat exchanger 14 is carried out after secondary heat exchange, secondary heat exchange to the part slag particle
Cold slag enters follow-up slag disposal system and carries out deep processing processing；
6) the cold solid impurity particle in part of walking is shoveled by shovel slag device 7, the cold solid impurity particle reuse produced by follow-up slag disposal system is supplemented,
Ensure the material balance of the cold solid impurity particle of cooling agent.
The high-temperature slag is the blast furnace cinder, pneumatic steelmaking slag, electric furnace steel making slag that temperature is more than 1300 degrees Celsius
Or any one in coal furnace slag.
The cold solid impurity particle is any one in steel slag tailings, blast-furnace cinder, iron tailings, limestone tailing or sand particles
Kind；The particle diameter of the cold solid impurity particle is 5-100 millimeters, and moisture is less than 10%.
The residual neat recovering system and follow-up slag disposal system are " a kind of disclosed in CN104988255A according to notification number
The supporting implementation of liquid slag waste heat recovery and the method for tailings ultra micro efflorescence ", realizes that the collaboration of the waste heat and tailings of high-temperature slag is high
Effect is utilized.
The present invention operation principle be：High temperature melting slag blanket in stock chest 18 carries out radiation heat transfer with the water in water cooling tube 4,
Aqueous medium after heat exchange is recycled into afterheat utilizing system；Meanwhile, cold wind is successively passed through in the presence of circulating fan 16
Blast pipe 12, cold air chamber 13, chassis panel 8, cold slag blanket and high temperature melting slag blanket are converted to hot blast, enter back into cold in heat exchanger 14
But, the cold wind after cooling passes through deduster 15 and circulating fan 16, is partly into blast pipe 12, cold air chamber 13, chassis panel
8th, the quick cooled and solidified of high-temperature slag is completed in cold slag blanket and high temperature melting slag blanket；Another part passes through deduster 15 and circulated air
Machine 16 enters the lower air inlet of heat exchanger 14, is exchanged heat from bottom to up through warm sludge layer, while being changed with the top cold water pipe of heat exchanger 14
Heat, then successively enters deduster 15 and circulating fan 16, realizes recycling for cooling wind；Hot water and heat in heat exchanger 14
Steam enters afterheat utilizing system, realizes the recovery of waste heat.
Claims (9)
1. a kind of high-temperature slag dry colling is granulated residual neat recovering system, it is characterised in that including：Maintenance tunnel (3), slag cooling bucket
(1), high temperature melting slag bucket (2), water cooling tube (4), striker plate (5), plough slag device (6), shovel slag device (7), trolley track (11), blast pipe
(12), cold air chamber (13), heat exchanger (14), deduster (15), circulating fan (16), annular chassis (17), stock chest (18), cold
Air compartment side plate (19), slag notch (20), slip hopper (21) and pillar (22)；The maintenance tunnel (3) be by laying fireproof bricks and
Into arched door loop tunnel, lower end is fixed and rest on the ground, and is arch, the subjacent on arch top at the top of maintenance tunnel (3)
Provided with some water cooling tubes (4)；The slag cooling bucket (1) is located at the top of maintenance tunnel (3) and, the height adjacent with slag notch (20)
Warm slag bucket (2) is located at the top of maintenance tunnel (3) and adjacent with slag cooling bucket (1), and slag cooling bucket (1) and high temperature melting slag bucket (2) are
Connected with the inner chamber of maintenance tunnel (3)；The trolley track (11) is located at the bottom of maintenance tunnel (3) inner chamber, the annular table
Car (17) is located at the bottom of maintenance tunnel (3) inner chamber and on trolley track (11), and maintenance tunnel (3) inner chamber both sides are fixed with
Pillar (22), the striker plate (5) is fixed on the top of pillar (22), and the bottom surface of striker plate (5) and annular chassis (17)
Chassis panel (8), which is in contact, constitutes stock chest (18), and the plough slag device (6) is located on striker plate (5) and positioned at high temperature melting slag bucket
(2) side of the discharging opening along annular chassis (17) traffic direction, the shovel slag device (7) is located on striker plate (5) and positioned at backgauge
The discharge outlet of plate (5), the discharging opening of striker plate (5) is connected with slag notch (20)；The slag notch (20) is located at maintenance tunnel
(3) top of side, and be connected by slipping hopper (21) with the charging aperture of heat exchanger (14)；Cold air chamber's side plate (19) is located at
The bottom of pillar (22) simultaneously constitutes ring-type square positioned at striker plate (5) lower section, cold air chamber's side plate (19) and chassis panel (8), ground
Shape cold air chamber (13), two side lower parts of maintenance tunnel (3) are provided with blast pipe (12) and blast pipe (12) is connected with cold air chamber (13)；
The discharging opening of heat exchanger (14) is connected with follow-up slag disposal system；The slag notch (20) also passes through pipeline and heat exchanger (14)
Top air inlet connection, the waste heat delivery outlet of heat exchanger (14) is connected with afterheat utilizing system, the air outlet of heat exchanger (14) and
The air inlet connection of deduster (15), the air outlet of deduster (15) is connected with the air inlet of circulating fan (16), circulating fan
(16) air outlet is connected with the lower air inlet of heat exchanger (14) with blast pipe (12) respectively.
2. a kind of high-temperature slag dry colling granulation residual neat recovering system according to claim 1, it is characterised in that：It is described
Annular chassis (17) is made up of chassis panel (8), chassis support (9) and wheel (10), and chassis panel (8) is welded on chassis support
(9) on, the lower end of chassis support (9) is provided with wheel (10), and chassis panel (8) is provided with and is available for the air holes that air-flow is passed through.
3. a kind of high-temperature slag dry colling granulation residual neat recovering system according to claim 1, it is characterised in that：It is described
The discharging opening of high temperature melting slag bucket (2) is higher 50-150 millimeters than the discharging opening of slag cooling bucket (1)；The discharging opening of high temperature melting slag bucket (2)
Length is smaller 50-100 millimeters than the distance between both sides striker plate (5).
4. a kind of high-temperature slag dry colling granulation residual neat recovering system according to claim 1, it is characterised in that：It is described
The composite construction that plough slag device (6) is combined for 1 horizontal triangular pyramidal colter with multiple vertical colters, and horizontal triangular pyramidal plough
The cone end of knife is welded with vertical colter afterbody interlude, and the length of vertical colter is 50-150 millimeters, the setting of vertical colter
Spacing is 100-200 millimeters, and the bottom surface of plough slag device (6) is 300-600 millimeters with the distance of chassis panel (8) top surface.
5. a kind of high-temperature slag dry colling granulation residual neat recovering system according to claim 1, it is characterised in that：It is described
Shovel slag device (7) is welded by two pieces of wear-resisting high-temperature steel plates, and one of steel plate is fixed on both sides striker plate (5) vertically, and
The side of steel plate and the tangent plane angle of striker plate (5) discharging opening are 30-60 degree, and another block of steel plate is welded on vertical steel plate bottom,
And be 135 degree with the angle of vertical steel plate, the distance of shovel slag device (7) bottom surface and chassis panel (8) top surface is 300-600 millimeters.
6. a kind of high-temperature slag dry colling granulation residual neat recovering system according to claim 2, it is characterised in that：It is described
Air holes aperture on chassis panel (8) is 3-5 millimeters, and its percent opening is 20-30%.
7. a kind of method that high-temperature slag dry colling is granulated waste heat recovery, it is characterised in that comprise the following steps：
1) first the cold solid impurity particle of granularity and water satisfied requirement is added in slag cooling bucket (1), at the same open annular chassis (17) and
Circulating fan (16), and it is filled with cold water into water cooling tube (4)；
2) cold solid impurity particle forms the cold slag blanket of 300-600 mm of thickness by being fallen under slag cooling bucket (1) in stock chest (18)；
3) high-temperature slag is flowed into cold slag blanket upper surface by high temperature melting slag bucket (2), forms the high temperature melting of 50-150 mm of thickness
Slag blanket；
4) annular chassis (17) horizontal annular operating, plough slag device (6) carries out multiple break and upset to the high temperature melting slag blanket of solidification,
Realize cooling down, being tentatively granulated and strengthen ventilative for high temperature melting slag blanket；
5) the high temperature melting slag blanket cooled down after granulation is shoveled out stock chest (18) by shovel slag device (7), and is changed by slipping hopper (21) inflow
In hot device (14), the cold wind entered by the lower air inlet of heat exchanger (14) carries out secondary heat exchange to the part slag particle, secondary to change
Cold slag after heat enters follow-up slag disposal system and carries out deep processing processing；
6) the cold solid impurity particle in part of walking is shoveled by shovel slag device (7), the cold solid impurity particle reuse produced by follow-up slag disposal system is supplemented, and is protected
Demonstrate,prove the material balance of the cold solid impurity particle of cooling agent.
8. the method that a kind of high-temperature slag dry colling according to claim 7 is granulated waste heat recovery, it is characterised in that institute
State high-temperature slag molten for blast furnace cinder, pneumatic steelmaking slag, electric furnace steel making slag or the coal furnace that temperature is more than 1300 degrees Celsius
Any one in slag.
9. the method that a kind of high-temperature slag dry colling according to claim 7 is granulated waste heat recovery, it is characterised in that institute
It is any one in steel slag tailings, blast-furnace cinder, iron tailings, limestone tailing or sand particles to state cold solid impurity particle；It is described cold
The particle diameter of solid impurity particle is 5-100 millimeters, and moisture is less than 10%.
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