CN107109519A - Agglomerating plant and sintering method - Google Patents
Agglomerating plant and sintering method Download PDFInfo
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- CN107109519A CN107109519A CN201580062386.1A CN201580062386A CN107109519A CN 107109519 A CN107109519 A CN 107109519A CN 201580062386 A CN201580062386 A CN 201580062386A CN 107109519 A CN107109519 A CN 107109519A
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- raw material
- pallet
- cooling gas
- air
- bellows
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Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/22—Sintering; Agglomerating in other sintering apparatus
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
- C22B1/205—Sintering; Agglomerating in sintering machines with movable grates regulation of the sintering process
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/26—Cooling of roasted, sintered, or agglomerated ores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
- F27B21/06—Endless-strand sintering machines
-
- 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
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention includes：Plural platform pallet, the plural platform pallet is set in the way of it can move along path movement, and is loaded into raw material in the plural platform pallet；Ignition furnace, the ignition furnace is arranged on the top of pallet and to the upper surface jet flames of raw material；A plurality of bellows, a plurality of bellows move along path on the bottom of the pallet and set to be sintered raw material by sucking air along the direction towards the bottom of pallet；Cooler, the cooler is arranged on the side of mobile route to supply cooling gas to the sintering deposit discharged from pallet；And first circulation portion, the first circulation portion is connected to cooler to supply at least a portion for the cooling gas for being provided to raw material to the top of pallet.Therefore, the present invention can control the combustion process of raw material, improve efficiency of combustion and can improve the quality and productivity ratio of raw material.
Description
Technical field
This disclosure relates to agglomerating plant and sintering method, relate more specifically to can by control raw material combustion process or
Efficiency of combustion is improved to improve the quality of raw material and the agglomerating plant of productivity ratio, and sintering method.
Background technology
In general, in sintering process, Iron Ore Powder, auxiliary material and fuel (breeze, anthracite) are put into drum-type
In mixer, it is mixed with each other and soaks, is then encased in predetermined altitude in pallet.Next, by using igniting
Stove lights the surface of mixed material, and the mixed material to be sintered is burnt while suction air is forced from downside
Knot.Next, the sintering deposit produced by sintering is distributed to pass through disintegrating machine, then cooled down in cooler.Hereafter, can be with
The sintering deposit of particle diameter for being easy to react and being easily incorporated in blast furnace that has in sintering deposit is delivered to blast furnace, and can be by
It is classified as back powder (return fine) and therefore as agglomerated material as the thin ore deposit of the sintering deposit with relatively small size
Reuse.
Such sintering process from being arranged on the bellows generation negative pressure below pallet to pallet by being applied
Suction force is carried out.When main blower is driven, negative pressure is produced in bellows.The negative pressure by bellows from mixed material
While lighting surface and aspirate air downwards, the mixed material being loaded on pallet can be sintered.It is fully sintered
The cooling gas that can be sprayed by disintegrating machine and by cooler of raw material cool down.
However, when the mixing material in pallet is sintered, due to because being pumped to bottom from the top of pallet
Air burning and the heat localization that produces in the bottom of pallet, thus the lower floor of mixing material temperature higher than mixing
The temperature on the upper strata of material.Therefore, because it is not sintered reaction in the upper strata of material fully, thus the product of the material produced
Matter and productivity ratio may be deteriorated.
Usually as the air being drawn into by bellows or the sintered discharge gas for the cooling gas for cooling down sintering deposit by original state
It is externally discharged.These gases may be containing the composition that can pollute environment and when by having the sintering deposit of higher temperature
There can be substantial amounts of heat energy.Therefore, if these gases are externally discharged by original state, environmental pollution, and meeting may be caused
Lose substantial amounts of energy.
The content of the invention
Technical problem
Present disclose provides a kind of agglomerating plant and sintering method of the combustion process that can control raw material.
The disclosure additionally provides a kind of agglomerating plant and sintering method of the gas circulation that can make to produce in sintering process.
The disclosure additionally provides the agglomerating plant and sintering method of a kind of quality that can improve raw material and productivity ratio.
The solution of problem
According to exemplary, agglomerating plant includes：Plural platform pallet, the plural platform pallet is with energy
The mode for enough moving along path movement is set, and raw material is loaded into the plural platform pallet；Ignition furnace, the igniting
Stove is arranged on above pallet with to the top surface jet flames of raw material；Bellows, the bellows move along path with a plurality of
It is arranged on below the pallet to aspirate air downwards from pallet, so as to be sintered to raw material；Cooler, this is cold
But device is arranged on the side of mobile route to cool down gas to from the sintering deposit supply of every pallet discharge in pallet
Body；And first circulation portion, the first circulation portion is connected to cooler to be provided to raw material to the supply of the top of pallet
Cooling gas at least a portion.
Agglomerating plant can also include gaseous fuel supply department, the gaseous fuel supply department be connected to first circulation portion with to
First circulation portion supplies gaseous fuel.
First circulation portion can include：First cover, this first covers on above pallet and is arranged along mobile route and prolongs
Stretch；First connecting pipeline, first connecting pipeline has an end for being connected to cooler and is connected to the another of the first cover
End；And first air blower, first air blower is arranged in the first connecting pipeline.
Agglomerating plant can also include second circulation portion, and the second circulation portion is connected to a part for bellows to be drawn into
Air supply in the part of bellows to the top of pallet, wherein, mobile route can include：Feed section, at this
Feed in section, raw material is loaded into pallet；Igniting section, in the igniting section, the ignited stove of raw material is lighted；With
And sintering section, in the sintering section, raw material is sintered, wherein, first circulation portion and second circulation portion will can be drawn into
Air or cooling gas supplied to sintering section.
Second circulation portion can include：Suction tube, the suction tube is connected to a part for bellows, and suction tube limits air quilt
It is placed in space therein；Second cover, this second covers on above pallet and is arranged along mobile route extension；Second connection
Pipeline, second connecting pipeline, which has, to be connected to an end of suction tube and is connected to the other end of the second cover；And the
Two air blowers, second air blower is arranged in the second connecting pipeline.
The first cover being arranged in first circulation portion can be arranged between ignition furnace and the second cover, and the first cover can be with
The top for the bellows being arranged on before 1/2 position for being arranged in mobile route.
Second cover, which can have to be arranged on, to be arranged in after the position that raw material burns completely to the last position on mobile route
An end between the upside for the bellows put.
Second cover extension length can than number × mono- bellows for the bellows for being connected to suction tube length
Value it is big.
Suction tube, which can be connected to 1/2 position for being arranged on mobile route and the air being drawn into, has the position of maximum temperature
Bellows between putting.
Mobile route can include：Fed section, and in the charging section, raw material is loaded into pallet；Igniting
Section, in the igniting section, raw material is ignited；And sintering section, in the sintering section, raw material is sintered, wherein, the
Cooling gas and gaseous fuel are supplied to sintering section by one circulation portions and gaseous fuel supply department.
Gaseous fuel supply department can include connection supply line, and the connection supply line limits gaseous fuel and moved wherein
The first connecting pipeline being arranged in first circulation portion can be connected to by moving the path passed through, and connecting supply line.
Gaseous fuel supply department can include：Fuel supply lines, the fuel supply lines limit gaseous fuel wherein
The path moved through, fuel supply lines have an end of the first cover for being connected to first circulation portion；And injection is single
Member, the injection unit is arranged on an end of fuel supply lines with to the top gas injection fuel of pallet.
Gaseous fuel can be diluted to the concentration less than the minimum burning concentration limit.
According to another exemplary embodiment, the sintering method of manufacture sintering deposit includes：Raw material is encased in and moved along
In the pallet of path movement；Raw material is lighted；Air is aspirated downwards from raw material；Sintering deposit is discharged to supply to sintering deposit
Cooling gas；And the raw material supply into pallet is provided at least a portion of the cooling gas of sintering deposit.
Wherein, when to raw material supply cooling gas, by cooling gas be supplied to be arranged on mobile route 1/2 position it
The upside of preceding bellows.
Raw material supply cooling gas into pallet can include：Measure the temperature of cooling gas；And when cooling
To raw material supply cooling gas when the temperature of gas is higher than predetermined temperature.
The sintering method can also include：After the raw material supply cooling gas into pallet, make gaseous fuel
Mixed with cooling gas with to raw material supply mixed gas.
The sintering method can also include：After air is aspirated downwards from raw material, the raw material supply into pallet
A part for the air being drawn into.
During a part for the air being drawn into the raw material supply into pallet, mobile road can be drawn air into
1/2 position in footpath and the air being drawn into have in the region between the position of maximum temperature.
When mixing gaseous fuel, can supply cooling gas before, supply cooling gas while or
Gaseous fuel is supplied after supply cooling gas.
When making gaseous fuel be mixed with cooling gas to supply mixed gas, cooling gas and gaseous fuel can be supplied
Should be to the top of the pallet moved after the position that raw material is ignited between 1/2 position of mobile route.
The effect of invention
According to the present embodiment, cooling gas and gaseous fuel with higher temperature can be supplied to the upper of raw material
Portion is to control the combustion process of raw material.Gaseous fuel can increase the time of material combusting.Therefore, the temperature of raw material can be held
Change places rise, and raw material is kept for the time in higher temperature can increase.Therefore, the quality of raw material can be improved, and
Relative to used raw material, the amount of the raw material effectively produced can increase, so as to improve productivity ratio.
In addition, the cooled flue gas produced in sintering process or the cooling gas produced when sintering deposit is cooled can be followed
Ring is to the top of pallet and participates in sintering.When during the process for being sintered to raw material to these cigarettes of raw material supply
During gas, efficiency of combustion can be improved, and can be restricted or prevented that the top of sinter layer is cooled due to extraneous air to be showed
As.Accordingly, with respect to used raw material, the amount of the sintering deposit effectively produced can increase, so as to improve productivity ratio.
Although in addition, the air capacity in pallet is reduced during being sintered, can subtract in air capacity
Few part increases the amount of air to improve the quality of sintering deposit.
Brief description of the drawings
Fig. 1 is the figure of the agglomerating plant according to an embodiment；
Fig. 2 is to show the cross sectional shape and cigarette of sinter layer during the sintering process of raw material according to an embodiment
The figure of the characteristic of gas；
Fig. 3 is the figure of the agglomerating plant according to another embodiment；
Fig. 4 is the figure of the agglomerating plant according to another embodiment；
Fig. 5 is the flow chart for showing the sintering method according to an embodiment；
Fig. 6 is the figure of the tank experimental provision (pot experimental device) according to an embodiment；And
Fig. 7 is the curve map for the temperature change for showing the sinter layer according to an embodiment.
Embodiment
Hereinafter, specific embodiment is described in detail with reference to the accompanying drawings.However, the present invention can be with different shapes
Formula is implemented and is not understood as limited to embodiment specifically described herein.On the contrary, thesing embodiments are provided so as to obtain this
Open will be thoroughly and complete, and will comprehensively pass on the scope of the present invention to those skilled in the art.In figure, it is
Diagram it is clear, expand the size in layer and region.Identical reference refers to identical element all the time.
Fig. 1 is the figure of the agglomerating plant according to an embodiment, and Fig. 2 is shown according to embodiment in original
The figure of the characteristic of the cross sectional shape of sinter layer and flue gas during the sintering process of material.
Reference picture 1, includes according to the agglomerating plant 100 of an embodiment：Plural platform pallet 130, the plural number
Platform pallet 130 is set in the way of it can move along path movement, and raw material is loaded into the plural platform sintering platform
In car 130；Ignition furnace 110, the ignition furnace 110 is arranged on the top of pallet 130 with to the top surface jet flames of raw material；It is multiple
Several bellows 140, a plurality of bellows 140 move along path and are arranged on the lower section of pallet 130, a plurality of bellows
Air is aspirated downwards in the upside of each bellows from every pallet in pallet 130 in 140, so as to be carried out to raw material
Sintering；Cooler 172, the cooler 172 is used to supply cooling gas to the sintering deposit discharged from pallet 130；And the
One circulation portions 180, the first circulation portion 180 is connected to cooler 172 to be provided to original to the supply of the top of pallet 130
At least a portion of the cooling gas of material.In addition, agglomerating plant can also include charging portion 120, portion 171, discharge portion 190 are crushed
With second circulation portion 150.Here, with the cooling gas for cooling down sintering deposit can be cooled flue gas supplied to sintering deposit.
Here, pallet 130 is arranged to rotate with caterpillar manner.The formation of pallet 130 close ring is located at limiting
The mobile route of the upside of close ring and the rotary path positioned at the downside of close ring.In mobile route, raw material is encased in burning
Tie in chassis 140 and be sintered.In rotary path, empty pallet 130 (thus fully sintered sintering deposit is allocated)
Movement is so as to the mobile route gone on the upside of close ring, for sintering process.
Mobile route is extendable in the longitudinal direction.Pallet 130 can be from the front side of mobile route towards mobile route
Rear side is moved.In addition, mobile route can include：Fed section, and the charging section is arranged at the most front side of mobile route, and
And charging portion is arranged in the charging section；Igniting section, the igniting section is arranged at the rear side in charging portion, and ignition furnace
110 are arranged in the igniting section；And sintering section, the sintering section is arranged at the rear side of igniting section, and raw material
It is sintered in the sintering section.It is loaded into or supplied to the area in pallet 130 that is, charging section is raw material
Section, and section of lighting a fire is the section that raw material is ignited.In addition, sintering section is that the flame lighted on the top surface of raw material is downward
The mobile section to be sintered to raw material.
Every pallet in pallet 130 can limit the space of accommodating raw material.The plural platform sintering platform
Car 130 can be arranged along mobile route and rotary path movement on crawler belt.Therefore, pallet 130 can allow original
Material is encased in pallet 130 to be sintered to raw material, so that while path and rotary path movement is moved along
Discharge sintering deposit is allocated to sintering deposit.
Charging portion 120 is arranged in the charging section of mobile route.That is, charging section can include length and dress
The length in material portion 120 identical region in a longitudinal direction.Charging portion 120 can be arranged on the top of pallet 130 and wrap
Hopper and charge chute are included, wherein, hopper limits the space of the storage of raw materials, and charge chute limits the mobile route of raw material and had
Inclined surface.Therefore, when raw material is discharged downwards from hopper, raw material can be drawn by being arranged on the charge chute below hopper
Lead in pallet 130.
Ignition furnace 110 is arranged in the igniting section of mobile route.That is, igniting section can include length and point
The length of stove 110 identical region in longitudinal length.Ignition furnace 110 is arranged on the top of pallet 130 and set
Put at the rear side in charging portion 120 to light raw material to the top surface of the raw material of pallet 130 supply flame.
A plurality of bellows 140 move along path and are arranged on the lower section of pallet 130.More specifically, in bellows 140
Each bellows can be arranged between the section that ignition furnace 110 and raw material are discharged from pallet 130.Bellows 140 are from sintering
Air is aspirated downwards in the upside of chassis 130.Therefore, the original that the air at the upside of pallet 130 passes through in pallet 130
Expect and be sucked up to the bellows 140 at the downside of pallet 130.Therefore, the top table of the raw material in pallet 130
The flame lighted on face can be by being moved to the basal surface of raw material by the air that bellows 140 are aspirated, so as to be carried out to raw material
Sintering.However, the section for being provided with bellows 140 can be with unrestricted and can set in a variety of ways.
Discharge portion 190 is connected to a plurality of bellows 140 to provide suction force and by the air being drawn into bellows 140
It is externally discharged.Discharge portion 190 is connected to the bottom of each bellows in a plurality of bellows 140.Discharge portion 190 includes taking out
Suction-chamber 191, dust arrester 192, main blower 193 and chimney 194, wherein, suction room 191 limits accommodating air so that air is at this
The space moved in space, dust arrester 192 is arranged in suction room 191, and main blower 193 is relative to the road that air is moved through
Footpath is arranged at the rear side of dust arrester 192, and chimney 194 is arranged at the rear side of main blower 193.Therefore, when main blower 193
When producing suction force, air is drawn through downwards bellows 140 from the upside of bellows 140.The air being drawn into is along suction
Dust arrester 192 is passed through in room 191 while movement towards main blower 193, and main blower 193 is then passed through by filtering and is arranged
It is put into chimney 194.That is, main blower 193 is produced in bellows 140 in top of the negative pressure to aspirate pallet 130
Air.Here, air from preceding side can be moved to rear side in the suction room 191.
Broken portion 171 can be arranged at the side of mobile route, i.e. be arranged on and be spaced apart with the most rear side of mobile route
Part at.Therefore, when sintering deposit is provided to broken portion 171 in the scattered agglomerate after fully sintered, the group of sintering deposit
Block is crushed.
Cooler 172 is arranged to be spaced apart with broken portion 171.Cooler 172 has the sky of accommodating raw material (that is, sintering deposit)
Between.Therefore, when the sintering deposit crushed in broken portion 171 is provided to cooler 172, it can spray single by cooling gas
Member such as nozzle supplies cooling gas to the inner space of cooler 172.Therefore, cooling gas can be through subcooler 172
The heat energy of sintering deposit is absorbed while inner space in the state of cooling gas contacts sintering deposit.Pass through these processes, sintering
Ore deposit can be selected to appropriate size and be loaded into blast furnace (not shown), and the sintering deposit with relative small size
Back powder can be classified as and reused as agglomerated material.
However, can have heat energy when by sinter layer as the sintering flue gas for the air being drawn into by bellows 140.This
Outside, simultaneously may therefore contain containing dust by the cooling gas of sintering deposit can pollute the composition of environment.Cooling gas is in warp
There can be substantial amounts of heat energy when crossing the raw material with higher temperature.Therefore, ring may be caused when these gases are externally discharged
Border is polluted, and can lose substantial amounts of energy.It therefore, it can to set according to the first circulation portion 150 of embodiment and the
Air or cooling gas to be supplied to and be recycled to sintering section by two circulation portions 180.
First circulation portion 180 is connected to cooler 172 to aspirate at least one of the cooling gas produced by cooler 172
Point, so as to supply cooling gas to the top of pallet 130.First circulation portion 180 includes first the 183, first connecting tube of cover
181 and first air blower 182, wherein, the first cover 183 is arranged along mobile route extension, first in the top of pallet 130
Connecting tube 181, which has, to be connected to an end of cooler 172 and is connected to the other end of the first cover 183, the first air blower
182 are arranged in the first connecting tube 181.In addition, first circulation portion 180 can include temperature measurement unit (not shown) and control
Unit (not shown).
First cover 183 is arranged on the top of pallet 130.First cover 183 can be arranged on 1/2 relative to mobile route
At position before putting.That is, the first cover 183 can be arranged on ignition furnace 110 with later by the second of description the cover 154 it
Between.In addition, the first cover 183 can portion gradually increases to its underpart from it with extendable in the longitudinal direction and width.Therefore, cool down
Gas and gaseous fuel can be provided to the pallet for 1/2 position that mobile route is moved to from the starting point of sintering section
130 top.
Because the cooling gas from cooler 172 to raw material supply absorbs the heat energy of the raw material with higher temperature, thus
The temperature of cooling gas is raised and containing the dust produced by raw material.Reference picture 2, between the position of ignition furnace 110 and 1/2
Combustion zone is disposed with the sinter layer of raw material in section.Therefore, when the High-temperature cooling gas that heat energy is absorbed by cooling down raw material
By the first cover 183 during the top section supplied to the raw material in the section between the position of ignition furnace 110 and 1/2, gas is cooled down
Body is when by raw material to raw material supply heat energy so that raw material easily burns and prevented when High-temperature cooling gas is supplied
Or the temperature reduction of limitation raw material.
In addition, the cooling gas for absorbing heat energy may be reused to reduce the utilization of energy.It must carry out being used to remove
The work of dust in cooling gas is with externally discharged by cooling gas.However, because the cooling gas containing dust is supplied
Should be to the raw material in pallet 130, thus dust can reuse as raw material, and need not carry out being used to remove cooling
The single work of dust in gas, therefore equipment can be simplified and operability can be improved.
First connecting tube 181, which has, to be connected to an end of cooler 172 and is connected to the other end of the first cover 183
Portion.In addition, the first connecting tube 181 limits the path that cooling gas is moved through.Therefore, from cooler 172 to raw material supply
At least a portion of cooling gas can be sucked from one end of the first connecting tube 181, and the first connecting tube 181 can
So that cooling gas to be discharged cooling gas towards the raw material of the lower section of the first cover 183 supplied to the first cover 183.
First air blower 182 is arranged in the first connecting tube 181, i.e. be arranged on the mobile route of cooling gas.First
Air blower 182 can provide suction force for one end of the first connecting tube 181.Therefore, when cooler 172 provides cooling
When gas and the first air blower 182 are that the first connecting tube 181 provides suction force, such phenomenon can be prevented：From cooling
The cooling gas that device 172 is supplied is absorbed when by raw material after heat energy, and cooling gas is sucked into the institute of the first connecting tube 181
State in an end and be discharged into the outside of cooler 172.
Temperature measurement unit is arranged on the cooling gas for being moved through the first connecting tube 181 in the first connecting tube 181 with measurement
The temperature of body.The various sensors for being capable of measurement temperature can be used as temperature measurement unit.
Control unit is connected to temperature measurement unit and the first air blower 182 to control the operation of the first air blower 182.From
The reason for cooling gas that cooler 172 is aspirated is provided to the raw material between the position of ignition furnace 110 and 1/2 is to contribute to original
Burning in material.In order to contribute to the burning in raw material, cooling gas must have higher temperature.When the temperature mistake of cooling gas
When low, cooling gas can take away the heat energy of raw material and burning is interfered.
Therefore, temperature measurement unit can measure the temperature of the cooling gas by the first connecting tube 181 to control first
The operation of air blower 182.For example, when the temperature of the cooling gas measured in temperature measurement unit is below about 100 DEG C, control
Unit can stop the operation of the first air blower 182 to prevent to supply cooling gas to the first cover 183.When in temperature survey list
When the temperature of the cooling gas measured in member is greater than about 100 DEG C, control unit can operate the first air blower 182 to allow cooling
Gas covers 183 supplied to first.Therefore, only the cooling gas with higher temperature can be provided to combustion zone and be arranged in burning
The raw material on layer is tied to contribute to the burning in raw material.
Second circulation portion 150 can also be included according to the agglomerating plant of an embodiment.Second circulation portion 150 is connected to
A part for a plurality of bellows 140 is with by the air supply being drawn into the top of pallet 130.Second circulation portion
150, which include suction tube 151, second, covers the 154, second connecting pipeline 153 and the second air blower 152, wherein, suction tube 151 is connected
The space of air is accommodated to bellows 140 and limiting, the second cover 154 is arranged along mobile route in the top of pallet 130 and prolonged
Stretch, the second connecting pipeline 153, which has, to be connected to an end of suction tube 151 and be connected to the other end of the second cover 154, the
Two air blowers 152 are arranged in the second connecting pipeline 153.Here, the air being drawn into can be by pallet 130
The air (hereinafter, being referred to as " air being drawn into ") of sinter layer.
Suction tube 151 limits air and is placed in space therein.Suction tube 151 is connected to a plurality of bellows 140
A part.Have most for example, suction tube 151 can be connected to 1/2 position for being arranged on mobile route and the air being drawn into
Bellows 140 between the position (hereinafter, being referred to as " BTP ") of high-temperature.That is, suction tube 151 can make to be drawn into
Air circulation in the region.Due to being both provided with each bellows 140 in bellows 140 for measuring the air being drawn into
The sensor of temperature, thus the temperature for the air being drawn into a plurality of bellows 140 can be monitored to confirm BTP position
Put.Although BTP position changes according to sintering condition, worker can adjust sintering condition so that BPT position with
Predetermined bellows 140 match.
Reference picture 2, air capacity may be influenceed by the aeration resistance of sinter layer, and aeration resistance can be according to sintering
Layer, the thickness of combustion zone and un-sintered layer and change.When the thickness increase of the of a relatively high combustion zone of aeration resistance, air capacity
Minimum value is gradually lowered between 1/2 position of mobile route and BTP, is then increased again.
Due to can be reduced by bellows 140 by the amount of the air of raw material at the higher part of aeration resistance, thus burn
Knot can not be carried out successfully.Therefore, when 1/2 position (hereinafter, being referred to as " 1/2 position ") and BTP that are arranged on mobile route
Between bellows 140 when being connected to suction tube 151, then by a part that the second air blower 152 of description is whole bellows 140
Suction force is provided, and is therefore that can be provided compared with whole bellows 140 provide the situation of suction force with a main blower 193
Relatively large suction force.That is, the number for being connected to the bellows 140 of the second air blower 152 is relatively fewer, and therefore
Suction force is less separated.Therefore, the suction force for each bellows being connected in the bellows of the second air blower 152 can increase
Greatly.
Therefore, the aeration resistance in the combustion zone between 1/2 position and BTP is higher, is carried by the second air blower 152
The suction force of confession is still of a relatively high, therefore, and the air capacity of reduction between 1/2 position and BTP in pallet 130 can be by most
Smallization.That is, although the motion of air may be interfered due to the aeration resistance of the raw material in pallet 130,
But the suction force for aspirating air from the downside of pallet 130 can increase to increase the air of the reduction due to aeration resistance
Amount.Therefore, raw material can be sintered successfully, so as to improve raw materials for sintering --- i.e., sintering deposit --- productivity ratio and product
Matter.
When the bellows being arranged between 1/2 position and BTP are connected to suction tube 151, except between 1/2 position and BTP
Remaining bellows outside bellows are connected to suction room 191.However, the scope for being connected to the bellows 140 of suction tube 151 can not be by
Limit and can set in a variety of ways.
Second cover 154 is arranged to the air supply that will be drawn into from suction tube 151 in the top of pallet 130 to raw material.
Compared with being connected to the bellows of suction tube 151, the second cover 154 can be arranged on the rear side of mobile route.That is, the second cover
154 end can be arranged on be arranged in burning rising point (burn rising point, BRP) (raw material burns completely
Position) after to rearmost position bellows top.Second cover 154 can with extendable in the longitudinal direction and width from it portion to
Its underpart gradually increases.
For example, second cover 154 extension length can than the bellows 140 for being connected to suction tube 151 number ×
The value of the length of one bellows 140 in a longitudinal direction is big.Because the air aspirated by suction tube 151 is because absorbing thermosphere
Heat energy and with higher temperature, thus the volume ratio of these air has the volume of the air of generic outer temperature big.Here, by
It is restricted in the volume of the air aspirated by bellows 140, thus when the second cover 154 supplies the region of air or by the second cover
When the number of the bellows 140 of 154 coverings is reduced, can not all it be drawn under the second cover 154 from the air of the discharge of the second cover 154
The bellows of side, and a part of of these air may leak into outside, so as to cause environmental pollution.
In the length increase of the extension of the second cover 154, due to being arranged on the bellows 140 of the lower section of the second cover 154
Number increases, thus the bellows 140 being arranged on below the second cover 154 can fully aspirate the air from the discharge of the second cover 154, from
And prevent the air from the discharge of the second cover 154 from leaking into outside.Therefore, the extension of the second cover 154 can have and can cover
The length covered on the bellows 140 more than the number of bellows 140 of the number than being connected to suction tube 151.That is, being arranged on wind
Second cover 154 of the top of case 140, which can have, is used to cover the bellows wherein fully aspirated from the air of the discharge of the second cover 154
The length of 140 numbers.However, the position of the extension of the second cover 154 and length can be with not limited to this and can be with various
Mode is set.For example, what the region that the other end of the second cover 154 is set can be set with being connected to the bellows of suction tube 151
The part in region is overlapped.That is, the bellows for being connected to suction tube 151 can be with being arranged on the wind of the lower section of the second cover 154
A part for case is overlapped.
Second cover 154 can supply air to the bellows being arranged on relative to mobile route after BRP to rearmost position.
That is, reference picture 2, because the air that the bellows 140 by being arranged between 1/2 position and BTP are aspirated contains moisture and oxygen
The oxygen concentration of concentration ratio extraneous air is low, thus when these air are provided to the raw material in progress burning block, burning can
It can be interfered.Therefore, the air aspirated between 1/2 position and BTP can be provided to the combustion at the rear side of mobile route
Burn the raw material that is nearly completed or is fully finished, for example supplied to be arranged on after BRP to rearmost position the top of bellows 140 original
Material.However, the position of the second cover 154 or can be with not limited to this and can be with various sides for the region and shape for supplying air
Formula is set.
Second connecting pipeline, which has, to be connected to an end of suction tube 151 and is connected to the other end of the second cover 154.
In addition, the second connecting pipeline 153, which is defined, is incorporated into the path that the air of suction tube 151 is flowed through.Therefore, it is incorporated into suction tube
Air in 151 can be then exhausted to the lower section of the second cover 154 by the second connecting pipeline 153 supplied to the second cover 154
Raw material.
Second air blower 152 is arranged in the second connecting pipeline 153 to be used to draw air into be connected to suction to provide
The suction force of the bellows 140 of pipe 151.Compared with main blower 193, receive the bellows of the suction force from the second air blower 152
140 number is relatively small.Therefore, even if the second air blower 152 and main blower 193 provide identical suction force, from second
Air blower 152, which receives the bellows of suction force, can still have the taking out from being further divided of receiving of main blower 193 than bellows
The big suction force of suction.Therefore, it is saturating in the pallet 130 of the top of bellows 140 of the second air blower 152 even in being connected to
Gas is relatively low, compared with being connected to the bellows of main blower 183, is connected to the bellows of the second air blower 152 and can provide relatively
Larger suction force, so as to increase the air capacity being connected in the pallet 130 of the second air blower 152.
That is, due to aspirating air from the relatively low part of gas permeability with relatively large suction force, thus it is empty
Tolerance can increase, so as to improve the quality of produced sintering deposit.However, improving the side of the suction force of the second air blower 152
Method can be set with not limited to this and in a variety of ways.
It is similar, due to the air produced during sintering process --- that is, sinter flue gas --- or in cooling sintering
The cooling gas produced during ore deposit --- i.e., cooled flue gas --- it is recycled to the top of pallet 130 and participates in sintering, thus
Flue gas will not be externally discharged, so as to prevent environmental pollution.In addition, these flue gases by raw material when can have it is substantial amounts of
Heat energy, when raw material is sintered in the case of raw material supply flue gas, efficiency of combustion can be improved.Accordingly, with respect to being used
Raw material amount, the amount of the sintering deposit effectively produced can with and increase, so as to improve productivity ratio.
Fig. 3 is the figure of the agglomerating plant according to another embodiment.Hereinafter, by the burning according to the another embodiment
Knot equipment is described.
When the raw material in pallet 130 is sintered, because the upper strata contact of raw material is outside and passes through extraneous air
Its heat energy is lost, thus compared with the lower floor of raw material, the temperature rise in upper strata is probably difficult, even if in addition, upper strata
Temperature is raised, and is kept for the time at high operating temperatures also can be shorter.Therefore, because not being sufficiently carried out in the top of raw material
Sintering reaction, thus the quality and productivity ratio of the raw material produced can reduce.Therefore, set according to the sintering of the another embodiment
It is standby can also include gaseous fuel supply department 160 except including first circulation portion 180 in addition to, with to being moved in section is sintered
Cooling gas and gaseous fuel of the top supply of pallet 130 with higher temperature.Here, according to another embodiment party
The agglomerating plant of case can also include the second circulation portion 150 according to foregoing embodiments.
Reference picture 3, gaseous fuel supply department 160 is connected to first circulation portion 180 to supply fuel gas, so that fuel
Gas is mixed with cooling gas, mixed gas is supplied to the top of pallet 130.Gaseous fuel supply department 160 can
To limit the path that gaseous fuel is moved through.Gaseous fuel supply department 160 can include the combustion for being connected to the first connecting tube 181
Expect supply line 161 and control valve 162.
Fuel supply lines 161 limit the path that moves through of gaseous fuel and with being connected with the first connecting tube 181
An end.Therefore, be moved through the gaseous fuel of fuel supply lines 161 be introduced in the first connecting tube 181 and
Mixed with the cooling gas for being moved through the first connecting tube 181.In addition, the gaseous fuel and cooling gas that are mixed with each other can be moved
It is dynamic to pass through the first connecting tube 181, then by the first cover 183 supplied to the top of pallet 130.
Control valve 162 can be arranged in fuel supply lines 161 to control the motion of gaseous fuel.Therefore, control is worked as
When controlling the operation of control valve 162, the amount or regulation that can adjust the gaseous fuel of the top supply to pallet 130 are supplied
Answer the time of gaseous fuel.
Here, LNG, LPG, coke-stove gas (COG), blast furnace gas (BFG), carbon monoxide (CO) and hydrogen can be used
(H2) at least one of be used as gaseous fuel.These gaseous fuels can be controlled supplied to the raw material in pallet 130
The combustion process of raw material.That is, the time of material combusting can be increased by the gaseous fuel supplied to the top of raw material
Plus.Therefore, the temperature of raw material can easily be raised due to the increase of burning time.In addition, raw material keeps being in higher temperature
Time can also increase.However, gaseous fuel not limited to this, and the combustion with flammable various gas types can be used
Material.
In addition, gaseous fuel can be diluted to the concentration less than the minimum burning concentration limit, then it is supplied.Namely
Say, gaseous fuel must be provided to the top of pallet 130 and burn to allow raw material easily to sinter.If however,
Gaseous fuel is provided to sintering after combining combustion is mixed with the cooling gas with higher temperature in the first connecting tube 181
The top of chassis 130, then gaseous fuel do not contribute to the sintering of raw material.Therefore, in order to prevent gaseous fuel being provided to
Combining combustion is mixed with cooling gas before the top of pallet 130, gaseous fuel can be diluted to less than minimum burning concentration
The concentration of the limit.Therefore, even if gaseous fuel is mixed with the cooling gas with higher temperature in the first connecting tube 181, gas
Fluid fuel can also in the case of unburned be supplied to pallet 130 top, then by the flame ignition in raw material with
Raw material is set easily to sinter.
The minimum burning concentration limit of gaseous fuel can change according to temperature.That is, with gaseous fuel
Temperature is raised, and the minimum burning concentration limit can be gradually reduced.In addition, being reduced with the temperature of gaseous fuel, minimum burning concentration
The limit can gradually increase.For example, when LNG is used as gaseous fuel, the temperature of the LNG minimum burning concentration limit at about 200 DEG C
Under be about 4.2%.In addition, LNG minimum burning concentration limit value is about 3.6% at a temperature of about 400 DEG C.In addition, LNG combustion
It is about 2.9% at a temperature of about 600 DEG C to burn least concentration limit value.
It is similar, because the minimum burning concentration limit of gaseous fuel changes according to temperature conditionss, thus gas combustion
The minimum burning concentration limit of material must dilute according to temperature conditionss.Therefore, it is necessary to measure by being mixed with gaseous fuel and
The farthest temperature of the cooling gas of the temperature of influence gaseous fuel, and must being adjusted according to the temperature of cooling gas
The minimum burning concentration limit of gaseous fuel.That is, when cooling gas has higher temperature, even if supply relatively small amount
Gaseous fuel, burning can also carry out easily.In addition, when cooling gas has lower temperature, burning is only in supply
It could be carried out in the case of relatively great amount of gaseous fuel.Therefore, it is necessary to examine gaseous fuel with cooling gas temperature phase
The least concentration limit of the corresponding minimum burning concentration limit, then necessary diluent gas fuel, and must be by the gas of dilution
Fluid fuel is supplied to raw material.Here, the temperature of cooling gas can be about 100 DEG C to about 300 DEG C.However, the temperature of cooling gas
Degree can be with unrestricted and set in a variety of ways.
It is similar, due to gaseous fuel and the cooling gas with higher temperature is provided to raw material, thus in raw material
When being sintered, burning can easily proceed to bottom from the top of raw material, and raw material can keep being in for a long time it is higher
Temperature.Therefore, the quality of raw material can be improved, and the amount of the raw material effectively produced can be relative to used raw material
Increase, so as to improve productivity ratio.
Fig. 4 is the figure of the agglomerating plant according to another embodiment.Hereinafter, by the burning according to the another embodiment
The gaseous fuel supply department of knot equipment is described.
Reference picture 4, according to the gaseous fuel supply department 160 of the another embodiment can include fuel supply lines 161,
Injection unit 163 and control valve 162, wherein, fuel supply lines 161 limit the path that moves through of gaseous fuel and had
It is connected to an end of the first cover 183, injection unit 163 is arranged on an end of fuel supply lines 161 with by gas
Fuel injection is to the top of pallet.
Fuel supply lines 161 can be directly connected to the first cover 183.Worn for example, fuel supply lines 161 can have
Cross an end of the first cover 183 and therefore be connected to the first cover 183.Therefore, the gas supplied to fuel supply lines 161 fires
Material can be mixed with the cooling gas supplied by the first connecting tube 181 in the first cover 183, then be provided to pallet
130.In addition, control valve 162 is arranged in fuel supply lines 161 to control the motion of gaseous fuel.Therefore, when control control
During the operation of valve 162, can adjust to pallet 130 supply gaseous fuel amount or regulation supply gaseous fuel when
Between.
If fuel supply lines 161 are through the first cover 183 and are therefore supported by, injection unit 163 can be arranged on
In first cover 183 and it is connected to one end.For example, injection unit 163 can include moving along many of path setting
Individual nozzle.Or, injection unit 163 can include the body with following space, and gas is introduced into the space.Here, this
Multiple spray-holes are defined in the bottom in body portion with gas injection fuel.That is, injection unit 163 can be sprayed
The spray nozzle type injection unit of gaseous fuel.Therefore, the gaseous fuel of injection unit 163 is moved to by fuel supply lines 161
Nozzle discharge to the top of pallet 130 can be passed through.However, the structure of injection unit 163 and to pallet 130
The method of top supply gaseous fuel can be provided with not limited to this and in a variety of ways.
Gaseous fuel can extend the burning time of raw material, and the cooling gas with higher temperature can be raw material
Heat energy is provided.Therefore, because gaseous fuel and the cooling gas with higher temperature are provided to raw material, thus burnt in raw material
During knot, burning can be easily carried out from the top of raw material to bottom, and raw material can keep being in higher temperature for a long time.
Therefore, the quality of raw material can be improved, and the amount of the raw material effectively produced can increase relative to used raw material,
So as to improve productivity ratio.
Fig. 5 is the flow chart for showing the sintering method according to an embodiment.Hereinafter, will be to according to an implementation
The sintering method of scheme is described.
Reference picture 5, is the method for manufacturing sintering deposit according to the sintering method of an embodiment.The sintering method includes：
For the process (S100) being encased in raw material in the pallet for moving along path movement, the process for lighting raw material
(S200), for aspirating the process (S300) of air downwards from raw material, for discharging sintering deposit and to sintering deposit supply cooling gas
The process (S400) of body, and be provided to for the raw material supply into pallet sintering deposit cooling gas at least one
Partial process.Here, during for raw material supply cooling gas, cooling gas can be supplied to and be arranged on shifting
The top of bellows before 1/2 position in dynamic path.In addition, mobile route can be with the phase described in agglomerating plant 100
Together.
First, the plural platform pallet 130 can one after the other pass through the downside in charging portion 120.Pass through charging portion 120
To form raw material layer in every pallet that raw material is encased in the plural platform pallet 130.When the plural platform
When pallet 130 one after the other passes through the downside of ignition furnace 110, flame is lighted on the top of raw material layer by ignition furnace 110,
And every pallet in pallet 130 makes raw material be sintered by sintering section.That is, when sintering
Chassis 130 in sintering section when moving, and the flame on the top of raw material layer can be by sintering taking out for the bellows 140 in section
Suction and move down so that material combusting, so as to manufacture sintering deposit.Fully sintered raw material --- i.e., sintering deposit --- can be with
Discharged from pallet 130 and be delivered to cooler 172, then cooled down by the cooling gas supplied from cooler 172.
Here, the raw material that a part for the air that be drawn into can be supplied in pallet 130.Specifically, these
Air, which can be sucked into 1/2 position of the mobile route positioned at pallet 130 and the air in suction bellows 140, to be had most
In region between the BTP of high-temperature.
Due to the aeration resistance in raw material on the region between 1/2 position of mobile route and BPT it is of a relatively high, thus
Air capacity is reduced at least, is then increased again.Air capacity by bellows 140 through raw material can be relative in aeration resistance
Reduced on higher region, therefore sintering process may not be smoothed out.Therefore, when 1/2 position for being arranged on mobile route
When bellows between BTP are connected to the suction tube 151 in second circulation portion 150, it is connected to and is taken out by the suction of the second air blower 152
Air above the bellows of suction pipe 151, compared with main blower 193 provides the situation of suction force for whole bellows, can be provided
Relatively large suction force.
Therefore, even if the combustion zone between 1/2 position and BTP has higher aeration resistance, carried by the second air blower 152
The suction force of confession is still of a relatively high, therefore the phenomenon of reduction can between 1/2 position and BTP for the air capacity in pallet 130
To minimize.Therefore, raw material can be sintered successfully, so as to improve the quality of sintering deposit.
The air being incorporated into by bellows 140 in suction tube 151 is covered by being arranged on the second of the top of pallet 130
154 are discharged into the raw material of the lower section of the second cover 154.Second cover 154 can be arranged on after BRP to last to relative to mobile route
The bellows supply air of position.Because the air that the bellows 140 between 1/2 position and BTP are aspirated contains moisture and oxygen is dense
Degree is less than the oxygen concentration of extraneous air, thus when the raw material supply air into the section burnt, burning may be done
Disturb.It therefore, it can air being supplied to the rear side of mobile route after the BRP that burning is nearly completed or is fully finished.Also
It is to say, is completed due to burning after BRP, even if thus will exists containing moisture and with the air of relatively low oxygen concentration
Pallet 130 is supplied to after BRP, sintering process is not interfered with yet.
Here, the air that number must be set to compare from the discharge of the second cover 154 in the lower section of the second cover 154 is fully taken out
Bellows 140 more than the number of the bellows of suction.For example, not being drawn into second fully from the air 154 of the discharge of the second cover 154
In the case of in the bellows of the lower section of cover 154, the air not being sucked may leak into outside, so as to pollute environment.Therefore, it is necessary to
Adjusted in view of the air capacity aspirated by being connected to suction tube 151 second cover 154 length in a longitudinal direction or by
The number of the bellows 140 of the covering of second cover 154.
The cooling gas produced after fully sintered raw material is cooled down can be circulated by first circulation portion 180, so that
It is reused.In addition, gaseous fuel supply department 160 can be connected to cooling gas circulation portions 180 so that cooling gas and gas
Fluid fuel is mixed, so that the raw material that mixed gas is supplied in pallet 130.Specifically, cooling gas and gaseous fuel
The pallet of 1/2 position of mobile route is moved to after the position that the raw material that can be provided in mobile route is ignited
130 top.
In the section, combustion zone is arranged on the sinter layer of raw material.Therefore, when absorbing heat energy by cooling down raw material
Cooling gas with higher temperature by first circulation portion 180 first cover 183 supplied to the position of ignition furnace 110 and 1/2 it
Between section in raw material top when, cooling gas can by raw material while to raw material supply heat energy so that former
Material easily burns.Therefore, efficiency of combustion can be improved, so that productivity ratio is improved, and the amount of the raw material effectively produced can
Increased with the amount relative to used raw material.In addition, the cooling gas for absorbing heat energy may be reused to reduce energy
Consumption.
Here, the temperature to cooling gas is measured, and when the temperature of cooling gas is higher than design temperature, first circulation
Portion 180 can be to raw material supply cooling gas.For example, predetermined temperature can be about 100 DEG C.That is, when cooling gas
When temperature is too low, cooling gas from raw material can take away heat when by raw material, so as to disturb the burning of raw material.Therefore, in order that
The burning of raw material is easily carried out, can by the cooling gas with enough heat energy, for example only have can make the water in raw material
The cooling gas of about 100 DEG C of temperature of evaporation is divided to be supplied to raw material.
Therefore, when the temperature of the cooling gas to being drawn into first circulation portion 180 is measured and by cooled flue gas
When temperature is compared with predetermined temperature, if the temperature of cooled flue gas is higher than predetermined temperature, the operation of the first air blower 182
Control into and cover 183 to raw material supply cooling gas by first.If the temperature of cooled flue gas is less than predetermined temperature, the first drum
The operation of blower fan 182 may be controlled to stop to supply cooling gas to prevent to raw material supply cooling gas to the first cover 183.So
And, predetermined temperature can be set with not limited to this and in a variety of ways.
Cooled down in addition, gaseous fuel supply department 160 can be connected to first circulation portion 180 with being supplied to pallet 130
Gas and gaseous fuel.Gaseous fuel supply department 160 is connected to first connecting tube in the first cover 183 or first circulation portion 180
181.Therefore, when gaseous fuel supply department 160 supplies gaseous fuel, gaseous fuel is connected supplied to the first cover 183 or first
Pipe 181 and mixed with the cooling air for being moved through the first cover 183 or the first connecting tube 181.Furthermore, it is possible to by the cold of mixing
But the raw material that gas and gaseous fuel are supplied in pallet 130 is to allow raw material easily to burn.
, can be before supply cooling gas, in the same of supply cooling gas when gaseous fuel is mixed with cooling gas
When or supply cooling gas after supply gaseous fuel.That is, the first connecting tube 181 or the can be being passed through first
One cover 183 supplies cooling gas in the case of supplying gaseous fuel to pallet 130, or can supply gaseous fuel simultaneously
And cooling gas.Or, gaseous fuel can be supplied in the case of supply cooling gas first.However, supply gaseous fuel
It can be provided with the order of cooling gas with not limited to this and in a variety of ways.
Gaseous fuel can extend the burning time of raw material, and the cooling gas with higher temperature can be raw material
Heat energy is provided.That is, when the top surface for the raw material that gaseous fuel is supplied in pallet 130, gaseous fuel meeting
Run into the flame produced due to ignition part 110 and the burning in raw material.Because the burning of gaseous fuel improves the temperature of raw material
Degree, thus the temperature on the top outside the contact of raw material can raise easily.In addition, the gas supplied downwards from the top of raw material
Fluid fuel can be supplied to middle body or the bottom of raw material, be burnt when then flame in the feed is moved down, so as to carry
Efficiency of combustion in high raw material.In addition, during the process, being supplied due to supplying the cooling gas with higher temperature to raw material
Heat energy is answered, thus cooling gas can aid in the burning of raw material and prevent temperature from reducing.
Therefore, because gaseous fuel and the cooling gas with higher temperature are provided to raw material, thus burnt in raw material
During knot, burning can easily carry out bottom from the top of raw material, and raw material can keep being in higher temperature for a long time.Cause
This, the quality of raw material can be improved, and the amount of the raw material effectively produced can increase relative to used raw material, from
And improve productivity ratio.
Fig. 6 is the figure of the tank experimental provision according to an embodiment, and Fig. 7 is to show the burning according to an embodiment
Tie the curve map of the temperature change in layer.
Hereinafter, the disclosure will be described in detail with reference to experiment embodiment.
In order to examine for cooling down the effect in the case that the cooling gas of sintering deposit is provided to the top of sinter layer,
Cooling gas is provided to the situation (the present embodiment) on upper strata of sinter layer by using Fig. 6 tank 500 with not supplying
The situation (comparative example) of cooling gas is compared.
That is, in comparative example, raw material 1 is put into tank 500 and lighted to measure the temperature change of sinter layer.
In the present embodiment, raw material 1 is put into tank 500 and lighted, there will be the higher temperatures of about 250 DEG C (temperature of cooling gas)
The air of degree is blown into tank 500 to measure the temperature change of sinter layer.
According to the experiment condition of comparative example, raw material 1 is encased in tank 500 with about 900mm height.Raw material 1 has
About 1888kg/m3Loading density and about 1700mmAq negative pressure.The duration of ignition is about 90 seconds, and firing temperature is about 1050 DEG C.
In addition, being surveyed in order at A, B, C, D point arranged in the way of the distance at a distance of about 255mm from the upper strata of raw material 1 to lower floor
The temperature of content of starting materials 1.
According to the experiment condition of the present embodiment, raw material 1 is encased in tank 500 with about 900mm height.Raw material 1 has
About 1888kg kg/m3Loading density and about 1700mmAq negative pressure.The duration of ignition is about 90 seconds, and firing temperature is about 1050
℃.In addition, the upper strata of the air (or gas with higher temperature) with higher temperature supplied to raw material 1 is continued into 4 minutes
To 11 minutes.Here, the temperature for the air supplied is about 250 DEG C (temperature of cooling gas), the amount for the air being blown into is about
322L/min(2,382Nm3/min).In addition, from the upper strata of raw material 1 to lower floor in order with a distance of about 255mm distance
The temperature of raw material 1 is measured at A, B, C, D point that mode is arranged.
Reference picture 7, when supplying the air with higher temperature to the upper strata of raw material, with the high-temperature area in comparative example
Scope is compared, the high-temperature area scope increase at the A points in the present embodiment, and the maximum temperature in the present embodiment also increases
Greatly.
In addition, in the present embodiment, although raw material A points sintering velocity (or sintering time) than in comparative example
Greatly, but the sintering velocity of raw material increases the sintering velocity (or sintering time) of raw material after pointb.Because：Due to being blown into
There is the air of higher temperature, thus the removal speed increase of wet area, therefore the aeration resistance reduction of sinter layer.Or
Person, due to the raising of the sintering quality on the upper strata of raw material, gas permeability is improved, thus can be lowered sintering velocity and be drawn into increasing
Air flow.In addition, in the present embodiment, compared with comparative example, high-temperature area scope is at A to D whole points
All increase.Therefore, compared with comparative example, the time that BTP is eventually arrived in the present embodiment is reduced, therefore raw material is further
It is effectively burned.Therefore, the quality of sintering deposit layer to its lower floor can be improved from it.
In addition, the temperature of the flue gas in the present embodiment is higher than the temperature of the flue gas in comparative example.When the temperature of flue gas
When decreasing below about 130 DEG C of temperature, moisture may condense, so that the pipe of suction flue gas is corroded.Therefore, flue gas is necessary
Keep in greater than about 130 DEG C of temperature.Here, because the flue gas in the present embodiment has of a relatively high temperature, thus
Flue gas can be easily kept in more than about 130 DEG C of temperature.Accordingly it is possible to prevent the corrosion of the pipe of suction flue gas.
The BTP arrival times, BTP temperature and sintering velocity of comparative example and the present embodiment are shown in following table 1.
[table 1]
| Comparative example | The present embodiment | |
| BTP arrival times | 35 points 27 seconds | 34 points 31 seconds |
| BTP temperature | 457.5℃ | 480.1℃ |
| Sintering velocity | 25.4mm/ minutes | 26.1mm/ minutes |
Therefore, reference picture 7 and table 1, when the cooling with higher temperature that cooling sintering deposit is supplied to the top of sinter layer
During gas, it can be seen that：Sintering is carried out with fast speed at a higher temperature.Therefore, have when to the supply of the top of raw material
During the cooling gas of higher temperature, the quality of sintering deposit can be improved, and can ensure energy-saving effect.Further, since cooling
Dust in gas is voluntarily removed in combustion, therefore can prevent the environmental pollution as caused by dust.
Although agglomerating plant and sintering method are described with reference to specific embodiment, agglomerating plant and
Sintering method is not limited thereto.Therefore, those skilled in the art will readily appreciate that, without departing substantially from by appended claims
Various remodeling and modification can be made in the case of the spirit and scope of the present invention limited to the present invention.
Claims (20)
1. a kind of agglomerating plant, including：
Plural platform pallet, the plural platform pallet is set in the way of it can move along path movement, Yi Jiyuan
Material is loaded into the plural platform pallet；
Ignition furnace, the ignition furnace is arranged on above the pallet with to the top surface jet flames of the raw material；
Bellows, the bellows are arranged on below the pallet with from the sintering platform with a plurality of along the mobile route
Car aspirates downwards air, so as to sinter the raw material；
Cooler, the cooler is arranged on the side of the mobile route with to from every sintering platform in the pallet
The sintering deposit supply cooling gas of car discharge；And
First circulation portion, the first circulation portion is connected to the cooler to be supplied to the supply of the top of the pallet
To at least a portion of the cooling gas of the raw material.
2. agglomerating plant according to claim 1, in addition to gaseous fuel supply department, the gaseous fuel supply department connection
To the first circulation portion with to the first circulation portion supply gaseous fuel.
3. agglomerating plant according to claim 1, wherein, the first circulation portion includes：
First cover, first cover is arranged on above the pallet to extend along the mobile route；
First connecting pipeline, first connecting pipeline has an end for being connected to the cooler and is connected to described the
The other end of one cover；And
First air blower, first air blower is arranged in first connecting pipeline.
4. agglomerating plant according to claim 1 or 2, in addition to second circulation portion, the second circulation portion are connected to institute
The air supply that a part for bellows is stated that will be drawn into the part of the bellows to the pallet it is described on
Portion,
Wherein, the mobile route includes：
Fed section, and in the charging section, the raw material is loaded into the pallet；
Igniting section, in the igniting section, the raw material is lighted by the ignition furnace；And
Section is sintered, in the sintering section, the raw material is sintered,
Wherein, the air being drawn into or cooling gas are supplied to the sintering by the first circulation portion and the second circulation portion
Section.
5. agglomerating plant according to claim 4, wherein, the second circulation portion includes：
Suction tube, the suction tube is connected to a part for the bellows, and the suction tube restriction air is placed in therein
Space；
Second cover, second cover is arranged on above the pallet to extend along the mobile route；
Second connecting pipeline, second connecting pipeline has an end for being connected to the suction tube and is connected to described the
The other end of two covers；And
Second air blower, second air blower is arranged in second connecting pipeline.
6. agglomerating plant according to claim 5, wherein, the first cover being arranged in the first circulation portion is arranged on institute
State between ignition furnace and second cover, and
Described first covers the top of the bellows before being arranged on 1/2 position for being arranged in the mobile route.
7. agglomerating plant according to claim 5, wherein, second cover, which has, is arranged on that to be arranged in the raw material complete
To an end between the upside of the bellows of the rearmost position on the mobile route after the position of burning.
8. agglomerating plant according to claim 5, wherein, the length of the extension of second cover, which is more than, is connected to institute
The number for stating the bellows of suction tube is multiplied by value obtained by the length of a bellows.
9. agglomerating plant according to claim 5, wherein, the suction tube, which is connected to, is arranged on the 1/ of the mobile route
2 positions and the air being drawn into have the bellows between the position of maximum temperature.
10. agglomerating plant according to claim 2, wherein, the mobile route includes：
Fed section, and in the charging section, the raw material is loaded into the pallet；
Igniting section, in the igniting section, the raw material is ignited；And
Section is sintered, in the sintering section, the raw material is sintered,
Wherein, cooling gas and gaseous fuel are supplied to the sintering by the first circulation portion and the gaseous fuel supply department
Section.
11. agglomerating plant according to claim 10, wherein, the gaseous fuel supply department includes connection supply line,
The connection supply line limits the path of gaseous fuel process movable within, and
The connection supply line is connected to the first connecting pipeline being arranged in the first circulation portion.
12. agglomerating plant according to claim 10, wherein, the gaseous fuel supply department includes：
Fuel supply lines, the fuel supply lines limit the path of gaseous fuel process movable within, and the fuel is supplied
Answer pipeline that there is an end of the first cover for being connected to the first circulation portion；And
Injection unit, the injection unit is arranged on an end of the fuel supply lines with to the pallet
Top gas injection fuel.
13. agglomerating plant according to claim 10, wherein, the gaseous fuel is diluted to less than minimum burning concentration
The concentration of the limit.
14. a kind of sintering method for manufacturing sintering deposit, the sintering method includes：
Raw material is encased in the pallet for moving along path movement；
The raw material is lighted；
Air is aspirated downwards from the raw material；
The sintering deposit is discharged to supply cooling gas to the sintering deposit；And
The raw material supply into the pallet is provided at least one of the cooling gas of the sintering deposit
Point,
Wherein, when to the raw material supply cooling gas, cooling gas is supplied to be arranged on the mobile route 1/2
The upside of bellows before putting.
15. sintering method according to claim 14, wherein, it is cold described in the raw material supply into the pallet
But gas includes：
Measure the temperature of cooling gas；And
When the temperature of the cooling gas is higher than predetermined temperature, to cooling gas described in the raw material supply.
16. sintering method according to claim 14, in addition to：Gaseous fuel is set to be mixed with cooling gas, with to institute
State the backward raw material supply mixed gas of the raw material supply cooling gas in pallet.
17. the sintering method according to claim 14 or 16, in addition to：After air is aspirated downwards from the raw material,
A part for the air that the raw material supply into the pallet is drawn into.
18. sintering method according to claim 17, wherein, in the raw material supply suction into the pallet
During a part for the air arrived, 1/2 position and the air being drawn into for drawing air into the mobile route have most
In region between the position of high-temperature.
19. sintering method according to claim 16, wherein, when mixing the gaseous fuel, gas is cooled down in supply
The gaseous fuel is supplied before body, while cooling gas is supplied or after supply cooling gas.
20. sintering method according to claim 16, wherein, the gaseous fuel is mixed with the cooling gas with
When supplying the mixed gas, the cooling gas and the gaseous fuel are supplied to the position that is ignited in the raw material it
The top of the pallet moved afterwards between 1/2 position of the mobile route.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0161024 | 2014-11-18 | ||
| KR1020140161024A KR101719518B1 (en) | 2014-11-18 | 2014-11-18 | Apparatus and Method for Manufacturing Sintered Ore |
| KR10-2014-0164467 | 2014-11-24 | ||
| KR1020140164467A KR101665066B1 (en) | 2014-11-24 | 2014-11-24 | Apparatus and Method for Manufacturing Sintered Ore |
| PCT/KR2015/009979 WO2016080650A1 (en) | 2014-11-18 | 2015-09-23 | Sintering apparatus and sintering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107109519A true CN107109519A (en) | 2017-08-29 |
| CN107109519B CN107109519B (en) | 2019-03-19 |
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|---|---|---|---|
| CN201580062386.1A Active CN107109519B (en) | 2014-11-18 | 2015-09-23 | Agglomerating plant and sintering method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3222953B1 (en) |
| JP (1) | JP6415714B2 (en) |
| CN (1) | CN107109519B (en) |
| TW (1) | TWI639805B (en) |
| WO (1) | WO2016080650A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410543A (en) * | 2020-12-07 | 2021-02-26 | 许玉蕊 | Sintering oxygen enrichment device |
| CN113227695A (en) * | 2018-12-11 | 2021-08-06 | 保尔伍斯股份有限公司 | Sintering machine |
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| CN107270730B (en) * | 2017-07-28 | 2023-08-11 | 中冶华天工程技术有限公司 | Internal circulation smoke emission reduction system of sintering machine |
| KR101962381B1 (en) * | 2017-08-02 | 2019-03-26 | 주식회사 포스코 | Sintering apparatus and sintering method using the same |
| WO2020112083A1 (en) | 2018-11-26 | 2020-06-04 | Hewlett-Packard Development Company, L.P. | Sintering furnace |
| SE545164C2 (en) * | 2021-06-10 | 2023-04-25 | Luossavaara Kiirunavaara Ab | A metal agglomerate production configuration |
| CN114425619B (en) * | 2021-12-08 | 2023-09-08 | 株洲晴川硬质合金有限公司 | Cooling treatment equipment for sintered powder metallurgy |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2016080650A1 (en) | 2016-05-26 |
| EP3222953A4 (en) | 2018-01-17 |
| EP3222953B1 (en) | 2021-04-07 |
| CN107109519B (en) | 2019-03-19 |
| TWI639805B (en) | 2018-11-01 |
| EP3222953A1 (en) | 2017-09-27 |
| JP6415714B2 (en) | 2018-10-31 |
| TW201621248A (en) | 2016-06-16 |
| JP2017537290A (en) | 2017-12-14 |
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