CN107806769A - A kind of heat energy recycle method and device of fusion metallurgy slag - Google Patents
A kind of heat energy recycle method and device of fusion metallurgy slag Download PDFInfo
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- CN107806769A CN107806769A CN201710791717.6A CN201710791717A CN107806769A CN 107806769 A CN107806769 A CN 107806769A CN 201710791717 A CN201710791717 A CN 201710791717A CN 107806769 A CN107806769 A CN 107806769A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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
- Y02P10/25—Process efficiency
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to a kind of heat energy recycle method and device of fusion metallurgy slag；At least it is made up of the fusion metallurgy slag energy recovery process from fusion metallurgy slag recovery heat energy generation high-temperature gas and heat energy utilization process；The granulated particles cooling procedure that fusion metallurgy slag energy recovery is at least further cooled down by the fusion metallurgy slag metallurgical slag granulated particles that quickly cooling obtains the fusion metallurgy slag granulation of its generation metallurgical slag granulated particles and metallurgical slag granulation flowed out from metallurgical furnace forms；Fusion metallurgy slag is dispelled by granulation air-flow, is flown out in particle and is divided into bulky grain on direction and little particle region is landed and collected respectively；Little particle is directly entered granulated particles cooling or other heat exchanging process, bulky grain enter secondary granulation process, and secondary granulation is by the way of air or water or water directly contact with the mixture of air with bulky grain.The material resource of fusion metallurgy slag and the high-value-use of heat energy are realized, is Metallurgy Energy Saving emission reduction, consumption reduction synergy provides method.
Description
Technical field
The present invention relates to a kind of fusion metallurgy slag high-grade, the energy recovery of low cost and its high value Application way and dress
Put, particularly the granulation of fusion metallurgy slag, granulated particles produce high-temperature gas and are used to improve Blast Temperature, save fuel
Or used as other thermals source, belong to energy supply for metallurgy and energy recovery utilizes and field of Environment Protection.
Background technology
In the ironmaking of metallurgical industry, steel-making and pyrogenic process Nonferrous Metallurgical Process, the fusion metallurgy slag of a large amount of high temperature can be produced,
Such as caused blast furnace slag, slag in iron-smelting furnace, non-ferrous metal metallurgy produces copper ashes, lead skim, cadmia etc., and its tapping temperature generally exists
1400~1600 DEG C or so, 350~480kg metallurgical slags can be produced by often producing 1 ton of metal, therefore recycle the waste heat of metallurgical slag
To metallurgy industry energy-saving and emission-reduction, energy efficiency is improved, there is highly important meaning.But metallurgical slag thermal conductivity factor is low, heat exchange speed
Degree is slow, the development for hindering afterheat of slags recovery technology such as discontinuous of slagging tap.Existing metallurgical furnace is all handled using water quenching substantially
Slag caused by smelting process, grain slag ratio consume substantial amounts of water resource, also have lost a large amount of heat energy 8~15.
On the other hand, scientific worker explores the dry type heat recovery technology of a variety of recovery dross sensible heats, such as wind quenching method, roller
Method, centrifugal granulation method etc..Wind quenching method is to flow into granulation region from the liquid slag of blast furnace discharge, is dispelled by high velocity air and is able to particulate
Change.Most of slag particle is discharged after being cooled to 800 DEG C by the cooling air being blown into from bottom during the whereabouts, and is sieved through heat sieve
After going out bulky grain clinker, into multistage thermopnore in by air carry out secondary cooling to 150 DEG C or so.Wind quenching method recovery heat is empty
Gas can be used for generating electricity, but power consumption is big, it is necessary to which equipment is also big in granulation；The grain slag that wind quenching obtains is often accompanied by
Bulky grain, it is unfavorable for subsequent treatment.
Drum process be slag flow on the roller continuously rotated drive slag formed flake adhesion thereon, be passed through by inside
Cooling fluid cooling obtains the very high solid slag of glass rate rapidly, scraped by scraper plate, the heat energy of recovery is used for generating electricity.The method
It is able to ensure that liquid slag fast cooling obtains vitreum, but disposal ability is not high, equipment operation rate is low, metallurgical solid impurity particle is big, breaks
Broken power consumption is high, and the heat quality of recovery is low.
Centrifugal granulation method is the rotating disk center of turntable that liquid slag flow to variable-ratio, and liquid slag is in rotating disk under the action of the centrifugal force
Edge be granulated and dish out, and be cooled in flight is fallen, and obtain hot blast.But high-speed rotation is set rotating disk in high temperature environments
Standby easily to break down, maintenance is difficult, it is difficult to realizes long-term stable operation.
For the cooling of fusion metallurgy slag, in order to ensure that the slag particle after cooling has vitreous structure, cement life can be used for
Production, the granulation of fusion metallurgy slag and cooling must quickly complete in a short time, so quenching dry type granulation technique is prominent difficult
Point is that the cooldown rate and waste heat recovery effect of grain slag to be taken into account.
In addition, the heat energy utilization of fusion metallurgy slag recovery also there are various ways, such as it is used for boiler, generating, hot-blast stove heat production
Wind etc..It is an effective approach for generating electricity, but the efficiency of utilization for generating electricity is relatively low, and need in many cases
More huge generating equipment, cause that the economic benefit of heat energy recycle receives very big influences.And in metallurgical production process,
Often need to provide heat with more than 1000 DEG C of hot blast, and the raising of hot blast temperature can reduce metallurgical furnace fuel ratio, improve metallurgical
The utilization ratio of stove improves yield, reduces cost.Therefore energy of the temperature for the whole steel nonferrous industry of reduction of hot blast is improved
Consume significant.But because the preheating temperature of blast furnace gas and combustion air is by the exhaust gas temperature and heat pipe work of hot-blast stove
Make the limitation of temperature, generally existing wind pushing temperature is not high at present and energy consumption issues.Therefore if using high-temperature molten slag as preheating
Thermal source using then being played an important role to the energy-saving of metallurgical process.But want simultaneously so that the heat reclaimed obtains Gao Pin
The utilization of matter is it is necessary to making recovering medium have higher temperature.Two links of energy recovery and heat energy utilization of metallurgical slag combine
Reach whole process and system high value, high efficiency and low cost can just be widely used.Therefore, from fusion metallurgy slag
Can the high value of reclaim heat energy, low cost be related to metallurgical slag heat energy recycle and be used widely using being one
Another important sport technique segment.
The purpose of the present invention is, is granulated rapidly in guarantee metallurgical slag and forms vitreum, does not influence subsequently to make cement raw
Under conditions of material, method and apparatus of the effective metallurgical slag waste heat recovery with applying are developed, high-quality is realized, reclaims at low cost
The waste heat of metallurgical slag, granulation speed and effect are improved, lift waste heat recovery rate and its later use rate, reduce equipment manufacturing cost and fortune
The target of row cost.
The content of the invention
Fusion metallurgy slag is quickly cooled down into granulation it is an object of the invention to provide one kind and Gao Pin is carried out to granulated particles
The heat recovery of position, produce high-temperature gas and be used to improve Blast Temperature and save fuel or used as other thermals source such as generatings
Method and apparatus.The present invention carries out secondary granulation, granulation gas to bulky grain again using high velocity air granulation fusion metallurgy slag
Preheating etc. produces high temperature hot gas body while realizing the quick granulation of fusion metallurgy slag, ensure that the vitreous structure of clinker,
Laid the foundation for metallurgical slag later use, obtained hot gas will be reclaimed and be used for hot-blast stove production high temperature sky as combustion air is made
Gas, improve metallurgy by warm air mode in full dose and component high temperature air-preposition burning matching way respectively and enter stove wind-warm syndrome
Coke ratio is reduced, saves combustion gas, or the heat utilization for other approach.The present invention is realized under the conditions of ensuring the metallurgical slag utilization of resources
High efficiency, low cost energy recovery and high value utilize, there is significant economic benefit, for solution this area Technological Economy
Problem provides technological means.This method and device have that fusion metallurgy slag particle effect is good, hot grade is high, equipment is simple, operation
Conveniently, the features such as investment operating cost is low.
The present invention adopts the following technical scheme that realization：
The heat energy recycle method of fusion metallurgy slag, it is characterised in that fusion metallurgy slag heat energy recycle process is at least
It is made up of the fusion metallurgy slag energy recovery process from fusion metallurgy slag recovery heat energy generation high-temperature gas and heat energy utilization process；
Fusion metallurgy slag energy recovery process is at least quickly cooled down by the fusion metallurgy slag flowed out from metallurgical furnace makes its generate metallurgical slag particle
Change the metallurgical slag granulated particles that the fusion metallurgy slag granulation of particle and the metallurgical slag granulation obtain further to cool down
Granulated particles cooling procedure composition；Fusion metallurgy slag granulation is dispelled by granulation air-flow to fusion metallurgy slag, is formed
Metallurgical slag granulated particles, and flown out in the particle and be divided into bulky grain on direction and little particle region is landed and collected respectively；Small
Grain is directly entered granulated particles cooling procedure or other heat exchanging process, and bulky grain enters secondary granulation process, secondary granulation mistake
Cheng Caiyong air or water or water are realized with the mixture of air with the mode that bulky grain directly contacts.
The heat energy recycle method of the fusion metallurgy slag, it is characterised in that the granulation air-flow is entering to melting smelting
Preheated before the dispelling of golden slag, preheating use indirect mode, is secondary granulation generation to the preheating thermal source for being granulated air-flow
Hot gas or produced to hot gas caused by the cooling of pelletizer outer wall during the fusion metallurgy slag particle or in hot blast stove system
Raw thermal source or other thermals source, or the mode that granulation air-flow is preheated before entering to the dispelling of fusion metallurgy slag is to melting
The granulation air-flow that metallurgical slag is granulated is mixed by air and hot gas, and the hot gas is hot gas caused by secondary granulation
Or to hot gas caused by the cooling of pelletizer outer wall during fusion metallurgy slag particle or in thermal source caused by hot blast stove system
Or other thermals source.
The heat energy recycle method of the fusion metallurgy slag, it is characterised in that the little particle is cold into granulated particles
But before process or other heat transfer process, being blown into cooling medium to the little particle makes it quickly cool down, and the little particle is carried out fast
Quickly cooling enters reheating operation after caused hot gas mixes with hot gas caused by liquid slag granulation or is sent to use
Family uses, and cooling medium used in quick cooling is that other processes have been heated to the hot gas of certain temperature or directly from big aspiration
The fresh air or water and the mixture of air entered.
The device of the heat energy recycle method for realizing fusion metallurgy slag, it is characterised in that the fusion metallurgy slag particle
The device of change process is at least exported by pelletizer shell, fusion metallurgy slag introducing port, granulation air-flow mouth blown, bulky grain, small
Grain outlet, hot gas export mouth and the particle separation baffles composition for separating size particles；Particle separation baffles are arranged on air-flow stream
The particle crossed on direction sinks region；The particle entrance of secondary granulation device of the bulky grain outlet with realizing secondary granulation process is connected
Connect, little particle outlet with granulated particles cooling granulated particles cooling device particle entrance side is connected, hot gas export mouth and
Thermal source user or reheating operation are connected.
The device of the heat energy recycle method for realizing fusion metallurgy slag, it is characterized in that after fusion metallurgy slag particle
Granulated particles cooling procedure is directly to contact realization with granulated particles by cooling gas in moving bed heat exchange columns；The shifting
Dynamic bed heat exchange columns are at least by moving bed heat exchange shell, the high temperature granulated particles entrance positioned at tower top, positioned at tower bottom
Grain outlet, the gas vent positioned at tower top, are formed positioned at the gas access of tower bottom；It is provided with moving bed and is put down with horizontal line
Row or the hole-opening bed laminate less than 15 ° of angles, hole-opening bed laminate are provided with particles fall mouth, the particle entrance side of hole-opening bed laminate with
Particles fall mouth side is located at the end positions of bed plate respectively, and particle entrance side is connected with moving bed heat exchange columns tower wall, along tower
High direction multilayer sets hole-opening bed laminate, and the particle entrance side and particles fall mouth side of adjacent hole-opening bed laminate are in heat exchange columns
Different sides are alternately arranged, and metallurgical slag granulated particles flow channel is left between the hole-opening bed laminate of adjacent layer.
The device of the heat energy recycle method of the fusion metallurgy slag, it is characterized in that the granulation after fusion metallurgy slag particle
Particle cooling procedure is directly to contact realization with granulated particles by cooling gas in rotary type heat exchanger；The swinging
Heat exchanger is at least by rotary type heat exchanger shell, the high temperature granulated particles entrance positioned at heat exchanger top, positioned at heat exchanger bottom
Particle outlet, the gas vent positioned at heat exchanger top, positioned at heat exchanger bottom gas access form；In the swinging
The radial direction of revolving drum is provided with particle decentralized institution in heat exchanger, and particle decentralized institution is divided into cylinder peripheral granule and disperseed
Mechanism and circle endoparticle decentralized institution, or particle decentralized institution are the different dispersion plate of the arrangement radial direction length on cylinder inner wall.
The heat energy recycle method of the fusion metallurgy slag, it is characterised in that the granulated particles cooling procedure is any
The granulation air-flow warm of the hot gas feeding fusion metallurgy slag granulation of temperature section does thermal source use or little particle is quick
Cooling procedure does cooling medium use, or caused by the cooling medium cooling of the granulating device outer wall of fusion metallurgy slag granulation
Granulated particles cooling procedure relevant temperature section of hot gas being sent into continues to be granulated particle heating.
The method of the heat energy recycle of the fusion metallurgy slag, it is characterized in that being at least made up of following process：
(1) fusion metallurgy slag energy recovery process：The fusion metallurgy of high temperature air is produced from fusion metallurgy slag recovery heat energy
Slag energy recovery process；Fusion metallurgy slag heat reclaiming system and high temperature are sent into the combustion-supporting air quantity required for hot blast stove heat
Metallurgical slag heat exchange produces high temperature air；
(2) the metallurgical furnace hot blast of high temperature air utilizes process：The height that the fusion metallurgy slag energy recovery process is obtained
The metallurgical furnace hot blast that warm air is used for the high temperature air that metallurgical furnace hot blast utilizes utilizes process；High temperature air is passed through hot blast stove system
Combustion gas mixing with being preheated by exhaust gas of hot-blast stove is burnt, and thermal source is provided to produce to the hot blast of metallurgical furnace force feed；
Exhaust gas of hot-blast stove full dose or be mostly used in preheats to combustion gas.
The method of the heat energy recycle of the fusion metallurgy slag, it is characterized in that being at least made up of following process：
(1) fusion metallurgy slag energy recovery process：The fusion metallurgy of high temperature air is produced from fusion metallurgy slag recovery heat energy
Slag energy recovery process is to produce 700 DEG C of high temperature above air as quantitative by target to fusion metallurgy slag heat reclaiming system feeding
Air, the air of the feeding produces more than 700 DEG C of high temperature air with high-temperature metallurgical slag heat exchange；
(2) the metallurgical furnace hot blast of high temperature air utilizes process：The height that the fusion metallurgy slag energy recovery process is obtained
The metallurgical furnace hot blast that warm air is used for the high temperature air that metallurgical furnace hot blast utilizes utilizes process；The high temperature air is preposition with passing through
Hot blast stove system is passed through after preposition combustion high-temperature air mixing caused by combustion heat-exchange and by exhaust gas of hot-blast stove preheating
Combustion gas mixing is burnt, and thermal source is provided to produce to the hot blast of metallurgical furnace force feed.
The heat energy recycle method of the fusion metallurgy slag, it is characterized in that the fusion metallurgy slag flowed out from metallurgical furnace is fast
Quickly cooling but generate granulated particles or/and granulated particles cooling caused by hot-air can be used for following purposes：Or for metallurgical air blast
Preheating, be specifically located to metallurgical furnace blow blower export and hot blast furnace bottom cold air inlet between or in the air blower
Between outlet and hot-blast stove relevant temperature section cold air inlet, or it is used as generating thermal source to use, or is used as other thermals source.
It is described as follows：
The heat energy recycle method of fusion metallurgy slag of the present invention mainly includes two processes：Fusion metallurgy slag returns
Receive heat energy and produce high-temperature gas process and the heat energy utilization process reclaimed；Fusion metallurgy slag recovery heat energy produces high-temperature gas mistake
Journey is mainly completed by granulating device and granulated particles cooling device.
The fusion metallurgy slag that the fusion metallurgy slag of 1400 DEG C flowed out from metallurgical furnace~1600 DEG C flows into granulating device is led
Entrance, dispelled into granulating device by the granulation gas by preheating, be divided into the direction of the air flow by set separation baffles
Bulky grain and short grained two settling zones.In order to realize that granulated particles can cool rapidly in a short period of time, ensure
The vitreous structure of metallurgical slag from bottom to little particle accumulation regions as cement raw material, little particle can be blown into air or water
With air mixture, it is cooled to less than 900 DEG C rapidly, be re-fed into the device of granulated particles cooling heat producing gas process afterwards
Carry out heat exchange cooling；And the liquid slag that bulky grain is not solidified completely due to the presence of particle inside, and cooling velocity is slow, so big
Grain is imported in secondary granulation device, is blown into air-flow or water or water thereto and is carried out secondary granulation to it with air mixture.Secondary grain
Bulky grain can be granulated into little particle completely by change process in a short time, and it is cold to be sent to granulated particles after being cooled to less than 900 DEG C
But device carries out heat exchange cooling.The secondary granulation of bulky grain both ensure that the complete granulation and vitreum ratio of fusion metallurgy slag,
Again to realize the granulation and vitreum of fusion metallurgy slag with less amount of granulation gas, and obtain high-temperature gas.Carry out
Hot gas caused by the cooling of the outer wall of hot gas caused by secondary granulation or granulating device is used for the preheating for being granulated air-flow, Ke Yiti
The inlet temperature of high granulation gas, 600~700 DEG C of high-temperature gas is produced after with fusion metallurgy slag quickly exchange heat, is carried
High value when being used as the combustion air of hot blast stove system or other thermals source.
Meanwhile in order to ensure long-term operating that granulating device can be at high temperature, it is necessary to be set in whole granulating device surrounding
Cooling jacket is put, inside is passed through air or water and wall is constantly cooled down with air mixture, ensures wall surface temperature suitable
In the range of, the hot gas that granulating device cools down to obtain can improve the heat of granulating device as short grained quick cooling gas
Gas temperature, it can also be used to be granulated the preheating of air-flow, it can also be used to secondary granulation.
When flow perturbation is smaller, little particle crosses the remote areas that separation baffles blow to granulating device, and particle diameter is larger
Particle it is smaller by gas rolling action, fall into the nearby region of granulating device.When disorderly air-flow is when having a great influence, particle diameter compared with
The kinetic energy that big bulky grain obtains is larger, and being weakened air-flow by diffusion is influenceed smaller, can be crossed separation baffles and be blowed to granulating device
Remote areas, and the less little particle of particle diameter is easily influenceed because kinetic energy is smaller by disorderly air-flow, falls into granulating device
Nearby region.
Less than 900 DEG C of high temperature granulated particles after granulation realize granulation by moving bed heat exchange columns or rotary type heat exchanger
The cooling of particle simultaneously produces hot gas.With passing through hole-opening bed on the hole-opening bed laminate that granulated particles are set in moving bed heat exchange columns
After the gas contact heat-exchanging of laminate, next layer of hole-opening bed laminate is fallen through into from the particles fall mouth of hole-opening bed laminate, then with gas
Body contact heat-exchanging, successively heat exchange is fallen successively is cooled to 150 DEG C or so of slag particle and discharged from the particle outlet of bottom of towe, after cooling
Granulated particles supply raw material of the cement plant as production cement.Cooling medium is blown upward in tower from tower bottom, through each bed
The hole of laminate carries out heat exchange with metallurgical slag granulated particles, and the gas flow temperature for completing heat exchange is up to 600~800 DEG C, can
Directly as the combustion air of hot blast stove system or it preheats thermal source or other thermals source use.In actual applications, hot gas enters
Enter cyclone dust collectors to remove the big dust particle in gas, the dust of collection is mixed as life with the cryogenic pelletization particle discharged
Produce the raw material of cement.
When using rotary type heat exchanger cooling granulated particles, high temperature granulated particles enter in heat exchanger with heat exchanger
Revolution is descending in heat exchanger internal rotation, and from the particle outlet discharge in rotary type heat exchanger low level, cooling medium is from heat exchanger
The gas access of low level enters, and granulated particles counter-current flow contact heat-exchanging, in the particle that the radial direction of revolving drum is set
Decentralized institution effect under granulated particles are dished out, be dispersed in inside heat exchanger, increase with the heat transfer area of hot-air and
Efficiency, granulated particles is increased heat transfer distance and dispersion effect during being rotationally advancing, heat transfer effect greatly improved.By
The slag particle that heat exchange is cooled to 150 DEG C or so is discharged from particle outlet, and supply cement plant uses as the raw material of production cement.Complete
The gas flow temperature of heat exchange is up to 600~800 DEG C, and hot sky is sent to after removing the big dust particle in gas into cyclone dust collectors
Gas user.
Granulation and the cooling procedure of granulated particles are being returned there is the thermal source of a variety of heat qualities in the inventive method
The cascade utilization of science can effectively improve heat energy utilization effect during receipts heat energy.The wherein thermal medium of granulation output
Heat can be used as by including high temperature granulation air-flow, outer wall chuck cooling hot gas stream, secondary granulation hot gas or hot steam etc. respectively
Source re-uses during returning again to high-temperature metallurgical slag recovery heat energy.For example, the granulation air-flow into granulating device needs to carry out
Preheating, and this preheating thermal source can use secondary granulation hot gas or hot steam, outer wall interlayer cooling hot gas, granulated particles
High temperature hot gas body caused by cooling heat transferring or other thermals source.For another example to short grained quick cooling procedure, air blower bulging
It is that equally outer wall interlayer cooling hot gas, granulated particles can be used to cool down by preheating, preheating thermal source that cooling medium, which is preferably also,
High temperature hot gas body caused by heat exchange or other thermals source.On the other hand, the temperature that outer wall interlayer cooling hot gas is finally discharged according to it
The difference of degree, corresponding temperature section in granulated particles heat exchanger can also be sent into, continue to be granulated particle heating, can effectively carry
High final temperature.
600~800 DEG C of high temperature hot gas body caused by granulated particles heat exchange is as thermal source, available for smelting hot-blast stove heat production
Air can also be applied to boiler, generating or other heat energy applications.Generally, due to hot-blast stove and metallurgical slag recuperation of heat facility
Relative close, and belong to normal match system in metallurgical industry, so hot-air is directly used in into smelting hot-blast stove, it can both improve heat
Energy utilization rate can save equipment investment again.It is neighbouring to have what selection in the case of power generating equipment generated electricity again remote from a distance from hot-blast stove
Heat energy utilization mode can be more economical.
Heat energy utilization for providing thermal source for hot-blast stove, which is mainly focused on the temperature for improving smelting hot blast and saved, to be fired
Two aspects of gas.In the case that metallurgical slag cooling uses air, by being granulated and exchanging heat, caused hot-air can directly be made
Enter hot blast stove system for combustion air.High temperature air caused by clinker heat exchange is divided into full dose for the application mode of hot-blast stove
Warm air Land use systems and component high temperature air-preposition burning two kinds of Land use systems of matching.Warm air utilization side in full dose
Formula be use with hot-blast stove needed for whole combustion air equivalent or combustion-supporting air quantity more than this air quantity fusion metallurgy slag is entered
Row granulation and heat exchange cooling, by institute's required airflow is larger, therefore be in medium temperature horizontal for wind-warm syndrome caused by exchanging heat, about 300~
400 DEG C or so, warm air in this is sent into hot-blast stove after dedusting directly as warm-up combustion-supporting air.Meanwhile combustion gas passes through
200~300 DEG C of low-temperature flue gas caused by flue gas heat-exchange unit and another Combustion of Hot Air Furnace in parallel carries out heat exchange and is heated, and send
Enter combustion chamber of hot-blast stove and burning is completed in combustion chamber with hot-air caused by the cooling of fusion metallurgy slag, to the checker brick of regenerator
Heat storage is carried out, thermal source is provided to be sent to the heating of the air of metallurgical furnace, obtains more than 1200 DEG C of high-temperature hot air and be sent into smelting
Golden stove participates in smelting.
Component high temperature air-preposition burning matching Land use systems are that fusion metallurgy slag is granulated using certain air quantity
Cooled down with heat exchange so that caused air themperature is more than 700 DEG C.Meanwhile front combustion burns a small amount of combustion gas by separately
A part of cold air is preheated to 600 DEG C or so, with clinker heat exchange caused by hot-air mix, self-heating wind furnace combustion air inlet enters
Enter in stove, so that intake reaches the combustion-supporting air quantity needed for hot-blast stove；Due to the orderly control to air quantity, mixed air
Temperature is up to 600~700 DEG C, and this part of high temperature air is blasted into hot-blast stove as warm-up combustion-supporting air.Meanwhile combustion gas passes through
200~300 DEG C of low-temperature flue gas caused by flue gas heat-exchange unit and another Combustion of Hot Air Furnace in parallel carries out heat exchange and is heated, and send
Enter combustion chamber of hot-blast stove and burning is completed in combustion chamber with hot-air caused by the cooling of fusion metallurgy slag, to the checker brick of regenerator
Heat storage is carried out, thermal source is provided to be sent to the heating of the air of metallurgical furnace, obtains more than 1200 DEG C of high-temperature hot air and be sent into smelting
Golden stove participates in smelting.
When high-temperature metallurgical slag cooling use other media in the case of, such as water or add water air-flow when, it is caused
Hot gas can carry out indirect heat exchange with combustion air makes it improve temperature, is being fired afterwards with the combustion gas after being preheated by low-temperature flue gas
Burn indoor completion burning, it is possibility to have improve final metallurgical blast temperature in effect ground.
Hot gas caused by fusion metallurgy slag granulation and granulated particles heat exchange cooling procedure can be also used for preheating smelting
Gold drum wind.With clinker heat exchange caused by high temperature hot gas body metallurgical air blast can be carried out by mediate contact or regenerative heat exchange mode
Heating.Can heat up metallurgical air blast 200~500 DEG C of discharges, and hot gas is cooled to 150~200 DEG C of emptyings or for other waste heats
Utilize.Metallurgical air blast by preheating enters in the hot-blast stove in air supply pattern, can be directly from hot blast furnace bottom cold air inlet
Into, also can self-heating wind furnace relevant temperature section will preheat air blast introduce, exchanged heat with the high temperature checker brick of chamber of hot-blast stove
Produce more than 1200 DEG C of high temperature air and be sent into metallurgical furnace participation smelting.
High temperature air caused by metallurgical slag heat exchange can also be sent directly into the boiler part of electricity generation system, participate in power system
Heat energy supplies, and can also be used as the thermal source of the other application technology such as boiler.
The medium cooled down for fusion metallurgy slag particle and granulated particles can use air or water and air mixture.
In the case of cooling down using air and be applied to hot-blast stove, atmospheric humidity low season can according to ironmaking to air blast in moisture
It is required that the addition of regulation water, can be according to the addition of the optimization decision water of granulation if for generating electricity.
The beneficial effects of the invention are as follows provide it is a kind of by fusion metallurgy slag rapidly and efficiently cooling granulation and to granulation
Grain carry out heat exchange recovery heat, produce high-temperature gas be used for improve Blast Temperature and save fuel or as generate electricity etc. other heat
The method and apparatus that source uses, it is ensured that the vitreous structure of metallurgical slag, laid a good foundation for metallurgical solid impurity particle later use.
By granulated particles subregion, bulky grain secondary granulation realizes the substantially stabilized granulation of a small amount of air, both ensure that metallurgical slag
Vitreum rate and can enough produce high-temperature hot air, improve heat quality be follow-up metallurgical slag recycling and follow-up heat energy profit
With laying a good foundation；The heat quality of high-temperature hot air is follow-up heat energy utilization produced by preheating by being granulated air-flow improves
Lay a good foundation；Accomplish efficiently fully to reclaim the heat energy of metallurgical slag at low cost by alternating porous plate moving bed；Pass through full dose
The metallurgical hot-blast stove heat energy profit of the recovery hot gas of middle warm air mode and component high temperature air-preposition burning matching way
With the utilization ratio and value of heat energy greatly improved；Pass through time of the high temperature hot gas body of the high efficiency, low cost of fusion metallurgy slag
Receive and the metallurgical furnace of heat energy efficiently utilizes, realize the material resource of fusion metallurgy slag and the high-value-use of heat energy, for metallurgy
Industrial energy saving emission reduction, consumption reduction synergy provide an effective technological means.This method and device have that equipment is simple, operation side
Just the features such as operating cost is low, stable, is invested.
Brief description of the drawings
Fig. 1：Granulation and moving bed heat-exchanger rig and flow chart；
Fig. 2：Warm air utilizes flow chart in full dose；
Fig. 3：Component high temperature air-preposition burning matching utilizes flow chart；
Fig. 4：Granulation and swinging heat-exchanger rig and flow chart；
Fig. 5：Heat transferring medium preheats metallurgical air blast flow chart.
Wherein, 1- granulating devices；2- is granulated room distant place settling zone；3- is granulated room nearby settling zone；4- secondary granulations
Device；5- separation baffles；6- secondary granulation device particle entrances；7- hole-opening bed laminates；8- bulky grains export；9- little particles export；10-
It is granulated hot gas export mouth；11- is granulated air-flow preheater；12- fusion metallurgy slags；13- is granulated air-flow entrance；Bis- grains of 14-
Change hot gas outlet；15- little particle fast cooling mediums；16- secondary granulation cooling mediums；17- is granulated air-flow；Bis- grains of 18-
Change hot gas；19- is granulated hot gas；20- bulky grain granulated particles；21- little particle granulated particles；22- mixing high temperature granulation
Grain；23- moving bed heat exchange columns；24- high temperature granulated particles entrances；25- heat exchange hot gas export mouths；26- cryogenic metallurgies slag exports；
27- heat exchange hole-opening bed laminates；28- particles fall mouths；29- cooling gas；30- heat exchange hot gas；31- cryogenic metallurgy slags；32- heat
Wind furnace；33- combustion chambers；34- regenerator；35- gas heat-exchangers；36- hot-blast stove combustion airs；37- combustion gas；38- low-temperature flue gas；
39- smelting air；40- smelting hot-airs；41- front combustions；42- high-temperature flue gas；The preposition burning preheated airs of 43-；
44- high-temperature flue gas heat exchangers；45- metallurgy air blast heat exchangers；46- rotary type heat exchangers；47- recuperated gas exports；48- swingings
Heat exchanger rotates；49- cylinder peripheral granule decentralized institutions；50- cylinder endoparticle decentralized institutions.
Embodiment
Embodiment 1：
The present embodiment is the heat energy recycle scheme of deoxy iron-smelting clinker, including two parts flow：Fusion metallurgy slag particle
Change and moving bed heat exchange cooling production high temperature air part is used for hot blast stove system part with warm air Land use systems in full dose.Such as
Shown in Fig. 1,1500 DEG C of fusion metallurgy slag 12 flows into granulating device 1 by charging aperture, is sprayed into from granulation air-flow entrance 13
Granulation air-flow 17 dispel, parabolically settle.Because flow perturbation is smaller, its small particles granulated particles 21 crosses separation gear
Plate 5 blows to distant place settling zone 2, and little particle fast cooling medium 15 is blasted by bottom, promotes little particle granulated particles 21 rapid
Less than 900 DEG C are cooled to, the discharge of little particle outlet 9 is dropped down onto along under hole-opening bed laminate 7；Little particle fast cooling medium 15 uses grain
1 outer wall chuck (not indicated in figure) and hot-air, caused rapid cooling thermal gas caused by high-temperature wall surface heat exchange are put in makeup
Body is discharged after being mixed with hot gas caused by granulation from granulation hot gas export mouth 10.Granulation air-flow dispels caused big
Grain granulated particles 20 do not cross separation baffles 5, are entered after being settled down to nearby settling zone 3 by secondary granulation device particle entrance 6
Secondary granulation device 4, contacted with secondary granulation cooling medium 16 and carry out secondary granulation, be cooled to less than 900 DEG C arrogant particle outlets 8
Discharge；Secondary granulation cooling medium 16 is used air as, caused secondary granulation hot gas 18 goes out from secondary granulation hot gas
Mouth 14 is discharged, and the preheating thermal source as granulation air-flow 17 is sent into granulation air-flow preheater 11 to being granulated air-flow preheating.Pass through granulation
Particle subregion, bulky grain secondary granulation is realized makes metallurgical solid impurity particle substantially stably be granulated with minimal amount of cooling medium, protects
Vitreous structure is demonstrate,proved, and granulation steam usage is greatly decreased.Bulky grain granulated particles 20 are mixed into little particle granulated particles 21
Mixing high temperature granulated particles 22 are sent into moving bed heat exchange columns 23 and carry out heat exchange cooling.
Granulation air-flow 17 in granulation is sent into granulating device 1 after granulation air-flow preheater 11 preheats, and effectively carries
The temperature of high final granulation hot gas 19, its temperature is up to 400~500 DEG C, into the combustion air supply system of hot-blast stove 32
Use.
Mix high temperature granulated particles 22 and moving bed heat exchange columns 23 are entered by high temperature granulated particles entrance 24, in heat exchange perforate
Exchange heat cooling and movement on bed plate 27 (being in 10 ° of angles with horizontal line) with the cooling gas 29 blasted from bottom, under particle
Fall mouth 28 and be discharged into lower floor's heat exchange hole-opening bed laminate, carry out heat exchange cooling successively, be cooled to 150 DEG C or so of cryogenic metallurgy slag
31 discharge from the cryogenic metallurgy slag outlet 26 of bottom of towe, are used for raw material of the cement plant as production cement.Exchange heat hole-opening bed laminate
Particle entrance side is connected with the tower wall of moving bed heat exchange columns 23, the particle entrance side of adjacent heat exchange hole-opening bed laminate 27 and particle
The side of whereabouts mouth 28 different sides in tower are alternately arranged, and mixing granulated particles flow downward successively, and heat-exchange time is thus significantly increased
And efficiency, the temperature of heat exchange hot gas 30 can reach 600~800 DEG C, from exchanging heat, hot gas export mouth 25 is discharged, into hot-blast stove
32 combustion air supply system uses.
As shown in Fig. 2 heat exchange hot gas caused by granulation hot gas 19 caused by granulating device 1 and moving bed heat exchange columns 23
Turn into hot-blast stove combustion air 36 of the temperature at 500~600 DEG C or so after 30 mixing, be passed directly into the combustion air of hot-blast stove 32
Entrance；Combustion gas 37 is by 200~300 DEG C caused by gas heat-exchanger 35 and another Combustion of Hot Air Furnace in parallel being used alternatingly
Low-temperature flue gas 38 exchanges heat, and is preheated to 250 DEG C or so, and fuel gas inlet and the hot-blast stove combustion air 36 for being passed through hot-blast stove 32 are mixed
Close, burnt in combustion chamber 33, heat storage is carried out to the checker brick of regenerator 34, low-temperature flue gas 38 is discharged, for heat in parallel
The preheating of the combustion gas 37 of wind furnace.After the completion of heat-accumulating process, smelting enters the dative of regenerator 34 in stove with air 39 from cold air inlet
Sub- brick completes heat exchange, and more than 1200 DEG C of smelting hot-air 40 is discharged in Self-air-heating outlet, is sent into metallurgical furnace and participates in smelting.
Hot-air caused by deoxy iron-smelting slag recuperation of heat significantly improves directly as combustion air into hot blast stove system
Combustion air preheating temperature, and heat conversion links are simple, heat loss is few.Meanwhile using granulating heat-transfer air directly combustion-supporting, cigarette
The scheme of gas preheated fuel gas, it can also enable the waste heat of clinker to have effectively simultaneously using clinker and the waste heat of hot-blast stove
It is added in hot-air system to effect, realizes energy distribution and the maximization utilized, realizes the material resource of fusion metallurgy slag
With the high-value-use of heat energy, and equipment is simple and convenient to operate, to invest operating cost low, stable.
Embodiment 2：
The present embodiment is the heat energy recycle scheme of melting steelmaking slag, including two parts flow：Fusion metallurgy slag particle
And swinging heat exchange cooling production high temperature air part and component high temperature air-preposition burning matching Land use systems are used for hot-blast stove system
System part.As shown in figure 4,1500 DEG C of fusion metallurgy slag 12 flows into granulating device 1 by charging aperture, sprayed into from granulation air-flow
The granulation air-flows 17 that mouth 6 sprays into dispel, and parabolically settle.Due to having a great influence for disorderly air-flow, wherein bulky grain granulation
Grain 20 crosses separation baffles 5 and blows to distant place settling zone 2, into secondary granulation device 4, is contacted with secondary granulation cooling medium 16
Secondary granulation is carried out, less than 900 DEG C arrogant particle outlets 8 is cooled to and discharges；Using water as secondary granulation cooling medium 16, production
Raw secondary granulation hot gas 18 is discharged from secondary granulation hot gas outlet 14.Granulation air-flow 17 dispels caused little particle granulation
Particle 21 does not cross separation baffles 5, is settled down to nearby settling zone 3, blasts little particle fast cooling medium 15 by bottom, promotes
Little particle granulated particles 21 are cooled to less than 900 DEG C rapidly, and the discharge of little particle outlet 9 is dropped down onto along under hole-opening bed laminate 7；Little particle
Fast cooling medium 15 is using water and the mixture of air.Bulky grain granulated particles 20 are mixed into mixed with little particle granulated particles 21
Close the feeding rotary type heat exchanger 47 of high temperature granulated particles 22 and carry out heat exchange cooling.
Granulation air-flow 17 in granulation is sent into granulating device 1 after granulation air-flow preheater 11 preheats, and effectively carries
The high temperature of final granulation hot gas 19, its temperature are up to 700~800 DEG C, and the combustion air into hot-blast stove 32 supplies system
System, preheating thermal source use in outer wall chuck with high-temperature wall surface heat exchange caused by high-temperature vapor caused by hot-air and secondary granulation
Mixed gas.
Mixing high temperature granulated particles 22 enter from the high temperature granulated particles entrance 24 of rotary type heat exchanger 47, are revolved in heat exchanger
Throwing is dispersed in rotary type heat exchanger in the presence of turning 48 and cylinder peripheral granule decentralized institution 49 and cylinder endoparticle decentralized institution 50
Inside 47, exchanged heat with the counter current contacting of cooling gas 29 entered from low level.150 DEG C or so of cryogenic metallurgy slag 31 is cooled to from low
The warm discharge of metallurgical slag outlet 26, used for raw material of the cement plant as production cement.Particle decentralized institution is in the radial direction side of cylinder
Upward disposed at equal distance, including cylinder peripheral granule decentralized institution and cylinder endoparticle decentralized institution are added significantly to particle and disperseed
Degree, heat exchange area and effect.The temperature of heat exchange hot gas 30 can reach 700~800 DEG C, be discharged from recuperated gas outlet 48,
Into the combustion air supply system of hot-blast stove 32.
As shown in figure 3, the flow by controlling granulation system gas so that caused granulation hot gas 19 and heat exchange hot gas
The temperature of body 30 maintains more than 700 DEG C.Meanwhile front combustion 41 burn caused by 1000 DEG C or so high-temperature flue gas 42 it is logical
Cross high temperature flue gas heat-exchange unit 44 and heat exchange is carried out to normal temperature air, produce 700 DEG C or so of preposition burning preheated air 43, lead to
Enter the combustion air supply system of hot-blast stove 32, to supplement the air capacity of the deficiency of hot-blast stove combustion air 36 needed for hot-blast stove 32.
Preposition burning preheated air 43, granulation hot gas 19 and the hot gas 30 that exchanges heat are mixed into more than 700 DEG C of hot-blast stove
Combustion air 36, it is passed directly into the combustion air inlet of hot-blast stove 32；Combustion gas 37 by gas heat-exchanger 35 with it is in parallel another
200~300 DEG C of low-temperature flue gas 38 is exchanged heat caused by seat Combustion of Hot Air Furnace, is preheated to 250 DEG C or so, is passed through hot-blast stove
32 fuel gas inlet mixes with hot-blast stove combustion air 36, is burnt in combustion chamber 33, the checker brick of regenerator 34 are added
Thermal regenerator, low-temperature flue gas 38 are discharged, and the combustion gas 37 for hot-blast stove in parallel preheats.After the completion of accumulation of heat, smelt self cooling with air 39
Wind entrance enters regenerator 34 in stove to be completed to exchange heat with checker brick, and Self-air-heating is exported more than 1200 DEG C of smelting hot-air 40
Discharge, it is sent into metallurgical furnace and participates in smelting.
Hot-air caused by deoxy iron-smelting slag recuperation of heat mixes to enter directly as combustion air with preposition burning preheated air
Entering hot blast stove system realizes making full use of for clinker high-grade waste heat, significantly improves combustion air preheating temperature, and heat
Conversion links are simple, and heat loss is few.Meanwhile combustion-supporting, smoke pre-heating combustion is mixed with front preheating process air using granulating heat-transfer air
The scheme of gas, clinker and hot-blast stove waste heat effectively can be utilized simultaneously, also enable the waste heat of clinker to be effectively added to
In hot-air system, energy distribution and the maximization utilized are realized, realizes the material resource of fusion metallurgy slag and the height of heat energy
Value is utilized, and equipment is simple and convenient to operate, to invest operating cost low, it is stable the features such as.
Embodiment 3
The present embodiment is the energy recovery scheme of the fusion metallurgy slag of nonferrous metallurgy, fusion metallurgy slag particle and energy recovery
Part is same as Example 1, except that high temperature air is used to preheat the hot blast to smelting furnace force feed, as shown in Figure 5.Smelt
The mixed airflow that hot gas 19 and the hot gas 30 that exchanges heat are granulated through metallurgical air blast heat exchanger 45 with air 39 heats, and is warming up to
400~500 DEG C or so, the cold air inlet of hot-blast stove 32 is passed through, further heat exchange, Self-air-heating are completed with the checker brick of regenerator 34
More than 1200 DEG C of smelting hot-air 40 is discharged in outlet, is sent into metallurgical furnace and is participated in smelting.
The preheating that hot-air caused by deoxy iron-smelting slag recuperation of heat is directly used in metallurgical air blast can effectively utilize clinker
Waste heat, coordinate the preheating of combustion air and combustion gas can significantly improve final hot blast temperature, realize energy distribution and utilization
Maximization, realize the material resource of fusion metallurgy slag and the high-value-use of heat energy.
Embodiment 4
The part heat substantially the same manner as Example 1, and reclaiming of heat energy is reclaimed in the present embodiment from fusion metallurgy slag
It can utilize and be used for hot blast stove system part (as shown in Figure 3) using component high temperature air-preposition burning matching Land use systems, utilize
Mode such as embodiment 2.In addition, in granulation, the preheating thermal source to granulation air-flow 17 uses the low of hot blast stove system discharge
Warm flue gas.Use air as secondary granulation cooling medium 16 and secondary granulation is carried out to bulky grain；Little particle fast cooling medium
15 using the outer wall chuck (not indicated in figure) of granulating device 1 and hot-air caused by high-temperature wall surface heat exchange, caused quick
Cooling hot gas is discharged after being mixed with hot gas caused by granulation from granulation hot gas export mouth 10.By being granulated air-flow 17
Preheating, the heat absorption heating of little particle fast cooling medium 15, it is final caused by the mixed gas temperature of the two up to 700~
800℃。
Embodiment 5
The present embodiment is substantially the same manner as Example 1, except that in granulation, granulation air-flow 17 is by air and two
Hot-air caused by secondary granulation hot gas 18 and outer wall jacket for heat exchange mixes.Because granulation throughput is big, to metallurgical slag
Little particle cooling effect is big, can be cooled to less than 900 DEG C, so eliminating short grained quick cooling procedure.Granulating device 1
Outer wall interlayer in after hot-air discharge, the inside respective air temperature section of moving bed heat exchange columns 23 is sent into according to its temperature level,
Heat exchange is participated in, continues mixed metallurgical slag 22 and heats.Smelting air 39 is granulated hot gas 19 through metallurgical air blast heat exchanger 45
400~500 DEG C or so are warming up to after the mixed airflow heating of heat exchange hot gas 30, is passed through the shaft relevant temperature section of hot-blast stove 32
Cold air inlet, complete further heat exchange with the checker brick of regenerator 34.Thus, preheated smelting air 39 can be reduced
Measure and improve preheating temperature, while remaining required smelting enters supplement with the cold air inlet of the bottom of air capacity self-heating wind furnace 32.From
Hot-blast outlet discharges more than 1200 DEG C of smelting hot-air 40, is sent into metallurgical furnace and participates in smelting.Used by secondary granulation
Cooling medium 3 is the multimedium that water sprays into respectively with air.
Embodiment 6
The present embodiment is substantially the same manner as Example 2, except that granulation air-flow 17 is by air and the portion of hot-blast stove output
Hot blast is divided to mix, little particle fast cooling medium 15 is air.In addition, swinging used by granulated particles heat transfer process
The particle decentralized institution of heat exchanger is the different dispersion plate of the radial direction length of disposed at equal distance on cylinder inner wall, in the rotation of cylinder
Transfer to and be dispersed in cylinder interior space with lower uniformly throw mixing high temperature granulated particles 22, effectively promote gas-solid contact and change
Heat.
Embodiment 7
The present embodiment is substantially the same manner as Example 1, except that granulation air-flow 17 is the mixture of water and air, produces
Granulation hot gas 19 and heat exchange hot gas 30 enter electricity generation system, the heat energy source as electricity generation system is generated electricity, according to
The optimization of granulation determines the addition of water.Cooling medium 3 is water used by secondary granulation.Air-flow is granulated without pre-
Heat.
Embodiment 8
The present embodiment is substantially the same manner as Example 1, except that cooling medium 3 is water and sky used by secondary granulation
The mixture of gas is directly entered granulation hot gas 19, and granulation air-flow is without preheating.Granulation hot gas 19 caused by granulating device 1
The drying operation of unclassified stores is participated in as the thermal source of drying materials with heat exchange hot gas 30.
Claims (10)
- A kind of 1. heat energy recycle method of fusion metallurgy slag, it is characterised in that fusion metallurgy slag heat energy recycle process is extremely Few fusion metallurgy slag energy recovery process and heat energy utilization process group by producing high-temperature gas from fusion metallurgy slag recovery heat energy Into；The fusion metallurgy slag energy recovery process is at least quickly cooled down by the fusion metallurgy slag flowed out from metallurgical furnace makes its generate smelting The metallurgical slag granulated particles that the fusion metallurgy slag granulation of golden slag granulated particles and the metallurgical slag granulation obtain enter one The granulated particles cooling procedure composition of step cooling；The fusion metallurgy slag granulation is carried out by granulation air-flow to fusion metallurgy slag Dispel, form metallurgical slag granulated particles, and flown out in the particle and be divided into bulky grain on direction and little particle region is landed and distinguished Collect；Little particle is directly entered granulated particles cooling procedure or other heat exchanging process, and bulky grain enters secondary granulation process, and two Secondary granulation is realized by the way of air or water or water directly contact with the mixture of air with bulky grain.
- 2. method as claimed in claim 1, it is characterised in that the granulation air-flow dispels advance in entrance to fusion metallurgy slag Go and preheat, preheating uses indirect mode, and the preheating thermal source of granulation air-flow for hot gas caused by the secondary granulation or is being melted Melt in metallurgical slag granulation to pelletizer outer wall cooling caused by hot gas or thermal source caused by hot blast stove system or other Thermal source, or the mode that granulation air-flow is preheated before entering to the dispelling of fusion metallurgy slag is that fusion metallurgy slag is granulated Granulation air-flow mixed by air and hot gas, the hot gas is hot gas caused by secondary granulation or in fusion metallurgy slag To hot gas caused by the cooling of pelletizer outer wall or in thermal source caused by hot blast stove system or other thermals source in granulation.
- 3. method as claimed in claim 1, it is characterised in that the little particle enter granulated particles cooling procedure or other change Before thermal process, being blown into cooling medium to the little particle makes it quickly cool down, and the little particle is carried out caused by quickly cooling Hot gas enters reheating operation after being mixed with hot gas caused by liquid slag granulation or is sent to user's use, quick cooling Cooling medium used be other processes be heated to certain temperature hot gas or directly from air suction fresh air or The mixture of water and air.
- 4. realize the device of the heat energy recycle method of fusion metallurgy slag described in claim 1, it is characterised in that the melting The device of metallurgical slag granulation is at least gone out by pelletizer shell, fusion metallurgy slag introducing port, granulation air-flow mouth blown, bulky grain Mouthful, little particle outlet, hot gas export mouth and the particle separation baffles composition for separating size particles；Particle separation baffles are arranged on The particle that air-flow is flowed through on direction sinks region；The particle of secondary granulation device of the bulky grain outlet with realizing secondary granulation process enters Mouth is connected, and little particle outlet is connected with the granulated particles cooling device particle entrance side of granulated particles cooling, and hot gas is led Outlet is connected with thermal source user or reheating operation.
- 5. the device of the heat energy recycle method of fusion metallurgy slag described in claim 1 is realized, it is characterized in that fusion metallurgy slag Granulated particles cooling procedure after granulation is that realization is directly contacted with granulated particles by cooling gas in moving bed heat exchange columns 's；The moving bed heat exchange columns are at least by moving bed heat exchange shell, the high temperature granulated particles entrance positioned at tower top, positioned at tower The particle outlet of bottom, the gas vent positioned at tower top, formed positioned at the gas access of tower bottom；Be provided with moving bed with Horizontal line is parallel or hole-opening bed laminate less than 15 ° of angles, hole-opening bed laminate are provided with particles fall mouth, the particle of hole-opening bed laminate Entrance side and particles fall mouth side are located at the end positions of bed plate respectively, and particle entrance side is connected with moving bed heat exchange columns tower wall Connect, hole-opening bed laminate is set along tower height direction multilayer, particle entrance side and the particles fall mouth side of adjacent hole-opening bed laminate exist Different sides are alternately arranged in heat exchange columns, and metallurgical slag granulated particles flow channel is left between the hole-opening bed laminate of adjacent layer.
- 6. the device of the heat energy recycle method of fusion metallurgy slag described in claim 1 is realized, it is characterized in that fusion metallurgy slag Granulated particles cooling procedure after granulation is that realization is directly contacted with granulated particles by cooling gas in rotary type heat exchanger 's；The rotary type heat exchanger is at least by rotary type heat exchanger shell, the high temperature granulated particles entrance positioned at heat exchanger top, position Particle outlet in heat exchanger bottom, the gas vent positioned at heat exchanger top, formed positioned at the gas access of heat exchanger bottom； The radial direction of revolving drum is provided with particle decentralized institution in the rotary type heat exchanger, and particle decentralized institution is divided into cylinder Peripheral granule decentralized institution and circle endoparticle decentralized institution, or particle decentralized institution are to arrange radial direction length not on cylinder inner wall Same dispersion plate.
- 7. such as claim 1,2 or 3 methods describeds, it is characterised in that heat of the granulated particles cooling procedure in any temperature section The granulation air-flow warm of gas feeding fusion metallurgy slag granulation does thermal source use or the quick cooling procedure of little particle is done Cooling medium is used, or hot gas caused by the cooling medium cooling of the granulating device outer wall of fusion metallurgy slag granulation is sent into Granulated particles cooling procedure relevant temperature section continues to be granulated particle heating.
- 8. method as claimed in claim 1, it is characterized in that being at least made up of following process：(1) fusion metallurgy slag energy recovery process：The fusion metallurgy slag heat of high temperature air is produced from fusion metallurgy slag recovery heat energy Can removal process；Fusion metallurgy slag heat reclaiming system and pyrometallurgy are sent into the combustion-supporting air quantity required for hot blast stove heat Slag heat exchange produces high temperature air；(2) the metallurgical furnace hot blast of high temperature air utilizes process：The high temperature that the fusion metallurgy slag energy recovery process is obtained is empty The metallurgical furnace hot blast that gas is used for the high temperature air that metallurgical furnace hot blast utilizes utilizes process；High temperature air be passed through hot blast stove system with Combustion gas mixing through being preheated by exhaust gas of hot-blast stove is burnt, and thermal source is provided to produce to the hot blast of metallurgical furnace force feed；Hot blast Furnace exhaust full dose or be mostly used in preheats to combustion gas.
- 9. method as claimed in claim 1, it is characterized in that being at least made up of following process：(1) fusion metallurgy slag energy recovery process：The fusion metallurgy slag heat of high temperature air is produced from fusion metallurgy slag recovery heat energy Energy removal process is sent into quantitative sky to fusion metallurgy slag heat reclaiming system to produce 700 DEG C of high temperature above air as target Gas, the air of the feeding produce more than 700 DEG C of high temperature air with high-temperature metallurgical slag heat exchange；(2) the metallurgical furnace hot blast of high temperature air utilizes process：The high temperature that the fusion metallurgy slag energy recovery process is obtained is empty The metallurgical furnace hot blast that gas is used for the high temperature air that metallurgical furnace hot blast utilizes utilizes process；The high temperature air is with passing through preposition burning Hot blast stove system and the combustion gas preheated by exhaust gas of hot-blast stove are passed through after preposition combustion high-temperature air mixing caused by heat exchange Mixing is burnt, and thermal source is provided to produce to the hot blast of metallurgical furnace force feed.
- 10. method as claimed in claim 1, it is characterized in that the fusion metallurgy slag flowed out from metallurgical furnace quickly to be cooled down to generation granulation Hot-air caused by particle or/and granulated particles cooling can be used for following purposes：Or the preheating for metallurgical air blast, it is specific to set Between the blower export blown to metallurgical furnace and hot blast furnace bottom cold air inlet or in the blower export and hot-blast stove phase Between answering temperature section cold air inlet, or it is used as generating thermal source to use, or is used as other thermals source.
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| CN109180029A (en) * | 2018-09-13 | 2019-01-11 | 南京有荣节能科技有限公司 | A kind of liquid slag comminution granulation |
| CN110819746A (en) * | 2019-09-25 | 2020-02-21 | 内蒙古科技大学 | Method and device for recycling heat energy of molten metallurgical slag |
| CN115052998A (en) * | 2020-02-03 | 2022-09-13 | Sms集团有限公司 | Method for granulating metallurgical residues |
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| CN115052998A (en) * | 2020-02-03 | 2022-09-13 | Sms集团有限公司 | Method for granulating metallurgical residues |
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