CN208748180U - A kind of Iron Ore Powder efficiently preheats prereduction device - Google Patents
A kind of Iron Ore Powder efficiently preheats prereduction device Download PDFInfo
- Publication number
- CN208748180U CN208748180U CN201821098154.9U CN201821098154U CN208748180U CN 208748180 U CN208748180 U CN 208748180U CN 201821098154 U CN201821098154 U CN 201821098154U CN 208748180 U CN208748180 U CN 208748180U
- Authority
- CN
- China
- Prior art keywords
- port
- level
- heat exchange
- iron ore
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of Iron Ore Powder efficiently preheats prereduction device, belongs to technical field of smelting.It include: fusion reducing furnace, vaporization gas hood, coal gas of high temperature processing system, Iron Ore Powder pre-heating system, raw ore elevator, crude ore bin, pulverized coal preparation injection system, deduster, conditioning Tower, chimney, air-introduced machine, hot mine elevator, hot mine injection system, hot mine batcher, hot mine blowing pipeline.The coal gas of high temperature that fusion reducing furnace generates is after vaporization gas hood and the processing of coal gas of high temperature processing system cooling, purifying, clean coal pneumatic transmission is to Iron Ore Powder pre-heating system and coal dust co-fire, the high-temperature flue gas of generation carries out simultaneously with the reverse and in the same direction heat exchange of the original ore powder that eminence falls, Iron Ore Powder temperature reaches 400~850 DEG C after multistage preheating, enter fusion reducing furnace through the blowing of high temperature feed-line to be smelted, the hot fume after heat exchange enters chimney after dedusting.The advantage is that coal gas obtains reuse, occupied area is small, and equipment is simple, realizes the efficient preheating prereduction of Iron Ore Powder.
Description
Technical field
The utility model belongs to technical field of smelting, in particular to a kind of Iron Ore Powder efficiently preheats prereduction device, is applicable in
In the processing of superfine powder.
Background technique
Currently, having realized that the preheating method of industrialized Iron Ore Powder is mainly fluidized bed in ironmaking technique of fusion and reduction
Prereduction and preheating in rotary kiln prereduction are preheated, by the preheating and prereduction of Iron Ore Powder, ultimate reacting furnace will mention significantly
High reaction rate and the raising thermal efficiency are to propose production synergy to mitigate the maximally efficient approach of ultimate reactor load.
Fluid bed preheat prereduction technology be used on HIsmelt first generation iron-smelting process using recirculating fluidized bed and
Miberal powder, can be preheating to 700 DEG C or more, reaction gas is temperature by the Circoheat fluidization of annular fluidized bed combination
1000 DEG C of melting furnace coal gas of high temperature, only fluidizes bed prereduction through primary cycle, and system 3 years ' operation is not implemented preset 25% also
Former degree and equipment failure rate is high.
FINEX ironmaking technology can handle the Iron Ore Powder that granularity is less than 8mm, using molten using multistage turbulent fluidized-bed process
Melt the high heating value heating gas (7000kJ/m of gasification furnace3Left and right) it is used as reducing agent to carry out preheating prereduction, this coal gas system pressure
High (4Mpa), system and equipment are complex, to prevent cohering for fluidized bed from need to control lower prereduction degree and preheating temperature
Degree.
Using segmentation preheating in rotary kiln technical treatment Iron Ore Powder, heat exchange efficiency is low, preheating temperature is low, is easy to happen and coheres simultaneously
And backward in technique, the quantity of return mines superelevation when iron ore Powder Particle Size is lower, it is extremely uneconomic processing mode.
The suspension preheating technology that early 1970s occur because it have that two phase gas-solid distribution is uniform, heat exchange efficiency is high and
The technical characterstic efficiently separated, odd-numbered day can heat ten thousand tons or more raw material, and the control of raw material granularity is 80 μm hereinafter, suspending in D30
Under state heat the easier progress of the thinner warm of raw material granularity, the raw material of this technical treatment be generally lime stone, clay and
A small amount of iron powder etc..Using the ultra-fine Iron Ore Powder of suspension preheating technical treatment, because iron ore powder density is big, the decline of cyclone cylinder separative efficiency and
There are larger differences for powder gas solid transfer diabatic process difference, and this technology is not used on ironmaking technique of fusion and reduction, with work
The connection of skill other systems and material stream, energy stream, information flow unanimously will all have biggish change, and the defect of this technology also will
It is transplanted in new process and makes a variation and protrude.
Summary of the invention
The purpose of this utility model is to provide a kind of Iron Ore Powders efficiently to preheat prereduction device, has simple process, sets
For reliable and good pre-heat effect feature, it can be achieved that the especially ultra-fine Iron Ore Powder of Iron Ore Powder is in the condition using melting and reducing coal gas
Lower efficiently preheating prereduction, reaches 800 DEG C or more of preheating temperature, by control reaction atmosphere, Iron Ore Powder available 10~
35% prereduction rate.
The device of the utility model includes: fusion reducing furnace 1, and vaporization gas hood 2, coal gas of high temperature processing system 3, Iron Ore Powder is pre-
Hot systems 4, raw ore elevator 5, crude ore bin 6, pulverized coal preparation injection system 7, deduster 8, conditioning Tower 9, chimney 10, air-introduced machine
11, hot mine elevator 12, hot mine injection system 13, hot mine batcher 14, hot mine blowing pipeline 15.
The port for each components that utility model device includes is illustrated, is classified as first with a port
Port, tool are first port there are two the wherein left side port of port or upper port, and there are three its middle port of port is suitable for tool
Sequence is to rotate clockwise using the top as first port, tool there are four with the wherein port order of upper port be rotate clockwise with
It is topmost first port.
The first port of fusion reducing furnace 1 is connected to the first port of vaporization gas hood 2；The second port of vaporization gas hood 2 with
The first port of coal gas of high temperature processing system 3 is connected to；The second port and Iron Ore Powder pre-heating system 4 of coal gas of high temperature processing system 3
The 6th port connection；The second port of Iron Ore Powder pre-heating system 4 is connected to the first port of raw ore elevator 5, and Iron Ore Powder is pre-
The of the first ports of hot systems 4 and the first port of deduster 8, the first port of conditioning Tower 9 and pulverized coal preparation injection system 7
Two-port netwerk connection, the 4th port of Iron Ore Powder pre-heating system 4 are connected to the second port of hot mine elevator 12, Iron Ore Powder preheating system
The fifth port of system 4 is connected to air-introduced machine 11；The first port of crude ore bin 6 connects miberal powder supplied materials, and the second port of crude ore bin 6 connects
The second port of deduster 8 and the second port of conditioning Tower 9 are connect, the third port of crude ore bin 6 connects the second of raw ore elevator
Port；The first port of pulverized coal preparation injection system 7 connects coal dust supplied materials, the third port and iron of pulverized coal preparation injection system 7
The third port of miberal powder pre-heating system 4 connects；The first port of the first port of hot mine elevator 12 and hot mine injection system 13
It is connected；The second port of hot mine injection system 13 is connected with the second port of hot mine batcher 14；Hot mine batcher 14
First port connects the second port of hot mine blowing pipeline 15, and the first port of hot mine blowing pipeline 15 is connected to melting and reducing
The second port of furnace 1.
The structure of the utility model is further illustrated, 4 single series of Iron Ore Powder pre-heating system further include: raw ore coming expects pipe
16, one cyclonic cylinder 17, level-one heat exchange pipeline 18, level-one feeder pipe 19, second level cyclone cylinder 20, secondary heat exchange pipeline 21, second level
Feeder pipe 22, three-level cyclone cylinder 23, three-level heat exchange pipeline 24, three-level feeder pipe 25, heating device 26, level Four heat exchange pipeline 27,
Category Four cyclone cylinder 28, hot mine feeder pipe 29, breeze blowing pipeline 30, combustion-supporting gas carry out pipe 31, coal gas comes pipe 32, smoke outlet tube
Line 33.
Wherein, each components have the first port that is classified as of a port, and there are two the wherein left side ports of port for tool
Or upper port is first port, tool is to rotate clockwise using the top as first end there are three the wherein port order of port
Mouthful, there are four be to rotate clockwise using the top as first port using the wherein port order of upper port for tool.
The first port of one cyclonic cylinder 17 connects exhanst gas outlet pipeline 33, the second port connection one of one cyclonic cylinder 17
The third port of the first port of grade heat exchange pipeline 18, one cyclonic cylinder 17 connects level-one feeder pipe 19；Second level cyclone cylinder 20
First port connects the second port of level-one heat exchange pipeline 18, the second port connection second level feeder pipe 22 of second level cyclone cylinder 20
The third port of first port, second level cyclone cylinder 20 connects secondary heat exchange pipeline 21；The first port of three-level cyclone cylinder 23 connects
The second port of secondary heat exchange pipeline 21, three-level cyclone cylinder 23 connects three-level heat exchange pipeline 24, the third end of three-level cyclone cylinder 23
Mouth connection three-level feeder pipe 25；The first port of heating device 26 connects level Four heat exchange pipeline 27, the second end of heating device 26
Mouth connection three-level feeder pipe 25, the third port of heating device 26 connect breeze blowing pipeline 30, the 4th end of heating device 26
Mouth connection combustion air carrys out pipe 31, and the fifth port connection coal gas of heating device 26 carrys out pipe 32；The first end of Category Four cyclone cylinder 28
Mouthful connection three-level heat exchange pipeline 24, the second port of Category Four cyclone cylinder 28 connect hot mine feeder pipe 29, and the of Category Four cyclone cylinder 28
Three ports connect level Four heat exchange pipeline.
Wherein, raw ore coming expects pipe 16 is connected on level-one heat exchange pipeline 18, and level-one feeder pipe 19 is connected to secondary heat exchange pipe
On road 24, second level feeder pipe 22 is connected on three-level heat exchange pipeline 24.
Specifically, Iron Ore Powder pre-heating system 4 included preheating classification can for second level, three-level, level Four, Pyatyi or multistage,
It can be simultaneously single series, bi serie or multi-series.
The technology path of the utility model be fusion reducing furnace generate coal gas of high temperature through vaporization gas hood and coal gas of high temperature at
After the processing of reason system cooling, purifying, gas temperature is down to 20~80 DEG C, and dustiness is down to 5mg/Nm3Hereinafter, clean coal pneumatic transmission is to iron
Miberal powder pre-heating system and coal dust co-fire, the reverse and in the same direction heat exchange of the original ore powder that the high-temperature flue gas and eminence of generation fall is simultaneously
Carry out, through multistage preheating after Iron Ore Powder temperature reach 400~850 DEG C, through high temperature feed-line blowing enter fusion reducing furnace into
Row is smelted, and the hot fume after heat exchange enters chimney after dedusting.Compared to existing two-stage rotary kiln Iron Ore Powder preheating technology, melting is also
Former producer gas obtains reuse, and pre-heating system occupied area is small, and pre-heating device is simple, and the efficient preheating for realizing Iron Ore Powder is pre- also
It is former.
The utility model Iron Ore Powder efficiently preheat pre-reduction treatment specific steps and control parameter it is as follows:
1. 1400~1650 DEG C of coal gas of high temperature come out from fusion reducing furnace 1,750 are cooled to by vaporization gas hood 2~
1100 DEG C, dust content of gas is by 20~100g/Nm3It is down to 20~40g/Nm3；
2. coal gas of high temperature, through coal gas of high temperature processing system 3, coal gas is cooled to 20~80 DEG C, and dust content of gas is down to 5mg/
Nm3Below；
3. purified gas enters the preheating prereduction that Iron Ore Powder pre-heating system 4 participates in Iron Ore Powder；
4. Iron Ore Powder supplied materials enters crude ore bin 6, original ore powder is promoted to Iron Ore Powder pre-heating system 4 through raw ore elevator 5 and is pushed up
Portion；
5. raw coal is prepared as thermal coal of the moisture content less than 2% through pulverized coal preparation injection system 7, it is blown pre- to Iron Ore Powder
Hot systems 4；
6. the exhanst gas outlet pipeline 33 of Iron Ore Powder pre-heating system 4 leads to deduster 8 or conditioning Tower 9, dedusting ash is delivered to original
Ore storage bin 6, neat stress are sent to discharging in chimney 10；
7. Iron Ore Powder is after the preheating of Iron Ore Powder pre-heating system 4, temperature reaches 400~850 DEG C, by hot mine feed-line and
Hot mine elevator 12 is promoted to hot mine injection system 13.
8. hot miberal powder is delivered to fusion reducing furnace 1 through hot mine blowing pipeline 15 with hot mine batcher 14 and is blown into furnace, participate in
Reaction in furnace melting is molten iron.
The work step of Iron Ore Powder pre-heating system is as follows in step 3:
1. original ore powder supplied materials is promoted to raw ore coming expects pipe 16 by raw ore elevator 5, blanking is to level-one heat exchange pipeline 18, in pipe
Heat exchange occurs with the hot fume for carrying out self-heating apparatus 26 in road, original ore powder enters one cyclonic with hot fume after level-one heats
Cylinder 17, in cyclonic separation blanking to level-one feeder pipe 19, the hot fume after heat exchange leaves one cyclonic cylinder 17 into exhanst gas outlet
Pipeline 33, hot fume temperature is less than 300 DEG C at this time；
2. the hot miberal powder blanking in level-one feeder pipe 19 in pipeline and carrys out self-heating apparatus 26 to secondary heat exchange pipeline 21
Hot fume occur heat exchange, hot miberal powder enters in second level cyclone cylinder 20 with hot fume, through cyclonic separation blanking to second level blanking
In pipe 22, hot fume leaves second level cyclone cylinder 20 and enters level-one heat exchange pipeline；
3. the hot miberal powder blanking in second level feeder pipe 22 in pipeline and carrys out self-heating apparatus 26 to three-level heat exchange pipeline 24
Hot fume occur heat exchange, hot miberal powder enters in three-level cyclone cylinder 23 with hot fume, through cyclonic separation blanking to three-level blanking
In pipe 25, hot fume leaves three-level cyclone cylinder 23 and enters secondary heat exchange pipeline 21；
4. the hot miberal powder in three-level feeder pipe 25 drops down onto heating device 26, exchanges heat with hot fume and enter level Four therewith and revolve
Air duct 28；
5. hot miberal powder is through in cyclonic separation blanking to hot mine feeder pipe 29, hot fume leaves Category Four cyclone cylinder 28 into three-level
In heat exchange pipeline 24；
Hot fume in step 4 in heating device 26 by from breeze blowing pipeline 30 thermal coal, combustion-supporting gas is come pipe
31 combustion air, coal gas carry out the generation of the gas combustion reaction in pipe 32, and 1300~1500 DEG C of hot fume temperature.Work as melting and reducing
Furnace during normal production, stablize by gas supply, and heating device 26 can use coal gas completely, and pulverized coal preparation injection system 7 can be used as out
Furnace use or spare.
Heating device 26 can get 10~35% prereduction rate by control reaction atmosphere, Iron Ore Powder in step 4.
Be reduced pressure atmosphere in one cyclonic cylinder~Category Four cyclone cylinder in step 1~5, pressure limit be in -200Pa~-
Between 1500Pa.
Utility model has the advantages that
1. Iron Ore Powder pre-heating system is made of multistage preheating unit, Iron Ore Powder can get 10~35% prereduction rate, temperature
Degree reaches 400~850 DEG C, and preheating is high-efficient, equipment is simple, occupied area is small, investment is low, solves existing two-stage rotary kiln and sets
Standby heat transfer efficiency is low, occupation area of equipment is big, cannot preheat the shortcomings that super finely ground slag；
It is used 2. being transported to after a large amount of high temperature coal gas purification of fusion reducing furnace in Iron Ore Powder pre-heating system, the energy is effectively sharp
It is got a promotion with rate, the decline of factory's entirety energy consumption；
3. the dust recycled in Iron Ore Powder pre-heating system flue gas is delivered to crude ore bin, the recycling of dedusting ash is simply realized
It utilizes；
4. effectively utilizing hot fume heat, system thermal efficiency by control Iron Ore Powder pre-heating system exit gas temperature
It is high.
Detailed description of the invention
Fig. 1 is that a kind of Iron Ore Powder provided by the utility model efficiently preheats prereduction process flow diagram.Wherein, it melts
Reduction furnace 1, vaporization gas hood 2, coal gas of high temperature processing system 3, Iron Ore Powder pre-heating system 4, raw ore elevator 5, crude ore bin 6, coal dust
Prepare injection system 7, deduster 8, conditioning Tower 9, chimney 10, air-introduced machine 11, hot mine elevator 12, hot mine injection system 13, heat
Mine batcher 14, hot mine are blown pipeline 15.
Fig. 2 is Iron Ore Powder pre-heating system flow diagram.Wherein, raw ore coming expects pipe 16, one cyclonic cylinder 17, level-one heat exchange
Pipeline 18, level-one feeder pipe 19, second level cyclone cylinder 20, secondary heat exchange pipeline 21, second level feeder pipe 22, three-level cyclone cylinder 23, three
Grade heat exchange pipeline 24, three-level feeder pipe 25, heating device 26, level Four heat exchange pipeline 27, Category Four cyclone cylinder 28, hot mine feeder pipe
29, breeze blowing pipeline 30, combustion-supporting gas carrys out pipe 31, and coal gas comes pipe 32, exhanst gas outlet pipeline 33.
Specific embodiment
The utility model includes: fusion reducing furnace 1, vaporization gas hood 2, coal gas of high temperature processing system 3, Iron Ore Powder pre-heating system
4, raw ore elevator 5, crude ore bin 6, pulverized coal preparation injection system 7, deduster 8, conditioning Tower 9, chimney 10, air-introduced machine 11, hot mine
Elevator 12, hot mine injection system 13, hot mine batcher 14, hot mine are blown pipeline 15.
The port for each components that utility model device includes is illustrated, is classified as first with a port
Port, tool are first port there are two the wherein left side port of port or upper port, and there are three its middle port of port is suitable for tool
Sequence is to rotate clockwise using the top as first port, tool there are four with the wherein port order of upper port be rotate clockwise with
It is topmost first port.
The first port of fusion reducing furnace 1 is connected to the first port of vaporization gas hood 2；The second port of vaporization gas hood 2 with
The first port of coal gas of high temperature processing system 3 is connected to；The second port and Iron Ore Powder pre-heating system 4 of coal gas of high temperature processing system 3
The 6th port connection；The second port of Iron Ore Powder pre-heating system 4 is connected to the first port of raw ore elevator 5, and Iron Ore Powder is pre-
The of the first ports of hot systems 4 and the first port of deduster 8, the first port of conditioning Tower 9 and pulverized coal preparation injection system 7
Two-port netwerk connection, the 4th port of Iron Ore Powder pre-heating system 4 are connected to the second port of hot mine elevator 12, Iron Ore Powder preheating system
The fifth port of system 4 is connected to air-introduced machine 11；The first port of crude ore bin 6 connects miberal powder supplied materials, and the second port of crude ore bin 6 connects
The second port of deduster 8 and the second port of conditioning Tower 9 are connect, the third port of crude ore bin 6 connects the second of raw ore elevator
Port；The first port of pulverized coal preparation injection system 7 connects coal dust supplied materials, the third port and iron of pulverized coal preparation injection system 7
The third port of miberal powder pre-heating system 4 connects；The first port of the first port of hot mine elevator 12 and hot mine injection system 13
It is connected；The second port of hot mine injection system 13 is connected with the second port of hot mine batcher 14；Hot mine batcher 14
First port connects the second port of hot mine blowing pipeline 15, and the first port of hot mine blowing pipeline 15 is connected to melting and reducing
The second port of furnace 1.
The structure of the utility model is further illustrated, 4 single series of Iron Ore Powder pre-heating system further include: raw ore coming expects pipe
16, one cyclonic cylinder 17, level-one heat exchange pipeline 18, level-one feeder pipe 19, second level cyclone cylinder 20, secondary heat exchange pipeline 21, second level
Feeder pipe 22, three-level cyclone cylinder 23, three-level heat exchange pipeline 24, three-level feeder pipe 25, heating device 26, level Four heat exchange pipeline 27,
Category Four cyclone cylinder 28, hot mine feeder pipe 29, breeze blowing pipeline 30, combustion-supporting gas carry out pipe 31, and coal gas comes pipe 32, smoke outlet tube
Line 33.
The first port of one cyclonic cylinder 17 connects exhanst gas outlet pipeline 33, the second port connection one of one cyclonic cylinder 17
The third port of the first port of grade heat exchange pipeline 18, one cyclonic cylinder 17 connects level-one feeder pipe 19；Second level cyclone cylinder 20
First port connects the second port of level-one heat exchange pipeline 18, the second port connection second level feeder pipe 22 of second level cyclone cylinder 20
The third port of first port, second level cyclone cylinder 20 connects secondary heat exchange pipeline 21；The first port of three-level cyclone cylinder 23 connects
The second port of secondary heat exchange pipeline 21, three-level cyclone cylinder 23 connects three-level heat exchange pipeline 24, the third end of three-level cyclone cylinder 23
Mouth connection three-level feeder pipe 25；The first port of heating device 26 connects level Four heat exchange pipeline 27, the second end of heating device 26
Mouth connection three-level feeder pipe 25, the third port of heating device 26 connect breeze blowing pipeline 30, the 4th end of heating device 26
Mouth connection combustion air carrys out pipe 31, and the fifth port connection coal gas of heating device 26 carrys out pipe 32；The first end of Category Four cyclone cylinder 28
Mouthful connection three-level heat exchange pipeline 24, the second port of Category Four cyclone cylinder 28 connect hot mine feeder pipe 29, and the of Category Four cyclone cylinder 28
Three ports connect level Four heat exchange pipeline.
The technology path of the utility model be fusion reducing furnace generate coal gas of high temperature through vaporization gas hood and coal gas of high temperature at
After the processing of reason system cooling, purifying, gas temperature is down to 20~80 DEG C, and dustiness is down to 5mg/Nm3Hereinafter, clean coal pneumatic transmission is to iron
Miberal powder pre-heating system and coal dust co-fire, the reverse and in the same direction heat exchange of the original ore powder that the high-temperature flue gas and eminence of generation fall is simultaneously
Carry out, through multistage preheating after Iron Ore Powder temperature reach 400~850 DEG C, through high temperature feed-line blowing enter fusion reducing furnace into
Row is smelted, and the hot fume after heat exchange enters chimney after dedusting.Compared to existing two-stage rotary kiln Iron Ore Powder preheating technology, melting is also
Former producer gas obtains reuse, and pre-heating system occupied area is small, and pre-heating device is simple, and the efficient preheating for realizing Iron Ore Powder is pre- also
It is former.
Above-mentioned technical proposal in order to better understand, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
1400~1650 DEG C of coal gas of high temperature come out from fusion reducing furnace 1, are cooled to 750~1100 by vaporization gas hood 2
DEG C, dust content of gas is by 20~100g/Nm3It is down to 20~40g/Nm3；Coal gas of high temperature is through coal gas of high temperature processing system 3, coal gas drop
For temperature to 20~80 DEG C, dust content of gas is down to 5mg/Nm3Below；Purified gas enters Iron Ore Powder pre-heating system 4 and participates in Iron Ore Powder
Preheat prereduction；Iron Ore Powder supplied materials enters crude ore bin 6, and original ore powder is promoted to Iron Ore Powder pre-heating system 4 through raw ore elevator 5 and is pushed up
Portion；Raw coal is prepared as thermal coal of the moisture content less than 2%, blowing to Iron Ore Powder pre-heating system through pulverized coal preparation injection system 7
4；The exhanst gas outlet pipeline 33 of Iron Ore Powder pre-heating system 4 leads to deduster 8 or conditioning Tower 9, and dedusting ash is delivered to crude ore bin 6, only
Flue gas is sent to discharging in chimney 10；For Iron Ore Powder after the preheating of Iron Ore Powder pre-heating system 4, temperature reaches 400~850 DEG C, passes through heat
Mine feed-line and hot mine elevator 12 are promoted to hot mine injection system 13.Hot miberal powder is with hot mine batcher 14 through hot mine injection tube
Line 15 is delivered to fusion reducing furnace 1 and is blown into furnace, and participation reaction in furnace melting is molten iron.
Wherein the working principle of Iron Ore Powder pre-heating system is that original ore powder supplied materials is promoted to raw ore supplied materials by raw ore elevator 5
With the hot fume for carrying out self-heating apparatus 26 heat exchange, original ore powder occur for pipe 16, blanking to level-one heat exchange pipeline 18 in pipeline
Enter one cyclonic cylinder 17 with hot fume after level-one heats, in cyclonic separation blanking to level-one feeder pipe 19, the heat after heat exchange
Flue gas leaves one cyclonic cylinder 17 and enters exhanst gas outlet pipeline 33, and hot fume temperature is less than 300 DEG C at this time；In level-one feeder pipe 19
Hot miberal powder blanking to secondary heat exchange pipeline 21, heat exchange, hot mine occurs with the hot fume for carrying out self-heating apparatus 26 in pipeline
Powder enters in second level cyclone cylinder 20 with hot fume, through in cyclonic separation blanking to second level feeder pipe 22, hot fume leaves second level rotation
Air duct 20 enters level-one heat exchange pipeline；Hot miberal powder blanking in second level feeder pipe 22 to three-level heat exchange pipeline 24, in pipeline with
Heat exchange occurs for the hot fume for carrying out self-heating apparatus 26, and hot miberal powder enters in three-level cyclone cylinder 23 with hot fume, through cyclonic separation
In blanking to three-level feeder pipe 25, hot fume leaves three-level cyclone cylinder 23 and enters secondary heat exchange pipeline 21；In three-level feeder pipe 25
Hot miberal powder drop down onto heating device 26, exchange heat with hot fume and therewith into Category Four cyclone cylinder 28；Hot miberal powder is through cyclonic separation
In blanking to hot mine feeder pipe 29, hot fume is left Category Four cyclone cylinder 28 and is entered in three-level heat exchange pipeline 24；In heating device 26
Hot fume come in pipe 32 by thermal coal, combustion-supporting gas from breeze blowing pipeline 30 come the combustion air of pipe 31, coal gas
Gas combustion reaction generates, and 1300~1500 DEG C of hot fume temperature.When fusion reducing furnace during normal production, gas supply stablize,
Heating device 26 can use coal gas completely, and pulverized coal preparation injection system 7 can be used as blow-on use or spare.Heating device 26 is logical
Control reaction atmosphere is crossed, Iron Ore Powder can get 10~35% prereduction rate.It is negative pressure in one cyclonic cylinder~Category Four cyclone cylinder
Atmosphere, pressure limit are between -200Pa~-1500Pa.
Technical effect
1. carrying out multistage preheating to mineral fine especially super finely ground slag by Iron Ore Powder pre-heating system, preheating is high-efficient, sets
For simple, occupied area is small, investment is low, Iron Ore Powder preheating temperature is up to 400~850 DEG C, by adjusting atmosphere in heating device,
The prereduction rate that Iron Ore Powder 10~35% can be achieved, solves that existing two-stage rotary kiln device heat transfer efficiency is low, equipment land occupation face
Product is big, cannot preheat the shortcomings that super finely ground slag；
It is used 2. being transported to after a large amount of high temperature coal gas purification of fusion reducing furnace in Iron Ore Powder pre-heating system, the energy is effectively sharp
It is got a promotion with rate, the decline of factory's entirety energy consumption；
3. the dust recycled in Iron Ore Powder pre-heating system flue gas is delivered to crude ore bin, the recycling of dedusting ash is simply realized
It utilizes；
4. effectively utilizing hot fume heat, system thermal efficiency by control Iron Ore Powder pre-heating system exit gas temperature
It is high.
Claims (4)
1. a kind of Iron Ore Powder efficiently preheats prereduction device characterized by comprising fusion reducing furnace (1), vaporization gas hood (2),
Coal gas of high temperature processing system (3), Iron Ore Powder pre-heating system (4), raw ore elevator (5), crude ore bin (6), pulverized coal preparation blowing system
System (7), deduster (8), conditioning Tower (9), chimney (10), air-introduced machine (11), hot mine elevator (12), hot mine injection system
(13), hot mine batcher (14), hot mine blowing pipeline (15)；
The first port of fusion reducing furnace (1) is connected to the first port of vaporization gas hood (2)；The second port of vaporization gas hood (2)
It is connected to the first port of coal gas of high temperature processing system (3)；The second port and Iron Ore Powder of coal gas of high temperature processing system (3) preheat
6th port of system (4) is connected to；The second port of Iron Ore Powder pre-heating system (4) and the first port of raw ore elevator (5) connect
It is logical, the first port of Iron Ore Powder pre-heating system (4) and first port, the first port and coal dust of conditioning Tower (9) of deduster (8)
Prepare the second port connection of injection system (7), the of the 4th port of Iron Ore Powder pre-heating system (4) and hot mine elevator (12)
Two-port netwerk connection, the fifth port of Iron Ore Powder pre-heating system (4) are connected to air-introduced machine (11)；The first port of crude ore bin (6) connects
Miberal powder supplied materials, the second port of second port connection deduster (8) of crude ore bin (6) and the second port of conditioning Tower (9) are connect, it is former
The second port of the third port connection raw ore elevator of ore storage bin (6)；The first port of pulverized coal preparation injection system (7) connects coal
The third port of powder supplied materials, pulverized coal preparation injection system (7) is connect with the third port of Iron Ore Powder pre-heating system (4)；Hot mine mentions
The first port for rising machine (12) is connected with the first port of hot mine injection system (13)；The second end of hot mine injection system (13)
Mouth is connected with the second port of hot mine batcher (14)；The first port of hot mine batcher (14) connects hot mine and is blown pipeline
(15) first port of second port, hot mine blowing pipeline (15) is connected to the second port of fusion reducing furnace (1).
2. miberal powder according to claim 1 efficiently preheats prereduction device, which is characterized in that further include: raw ore coming expects pipe
(16), one cyclonic cylinder (17), level-one heat exchange pipeline (18), level-one feeder pipe (19), second level cyclone cylinder (20), secondary heat exchange pipe
Road (21), second level feeder pipe (22), three-level cyclone cylinder (23), three-level heat exchange pipeline (24), three-level feeder pipe (25), heating device
(26), level Four heat exchange pipeline (27), Category Four cyclone cylinder (28), hot mine feeder pipe (29), combustion-supporting gas carry out pipe (31), coal gas carrys out pipe
(32), exhanst gas outlet pipeline (33)；
The first port of one cyclonic cylinder (17) connects exhanst gas outlet pipeline (33), the second port connection of one cyclonic cylinder (17)
The third port of the first port of level-one heat exchange pipeline (18), one cyclonic cylinder (17) connects level-one feeder pipe (19)；Second level rotation
The second port of first port connection level-one heat exchange pipeline (18) of air duct (20), the second port connection of second level cyclone cylinder (20)
The third port of the first port of second level feeder pipe (22), second level cyclone cylinder (20) connects secondary heat exchange pipeline (21)；Three-level rotation
The first port of air duct (23) connects secondary heat exchange pipeline (21), and the second port of three-level cyclone cylinder (23) connects three-level heat exchanger tube
The third port in road (24), three-level cyclone cylinder (23) connects three-level feeder pipe (25)；The first port of heating device (26) connects
The second port of level Four heat exchange pipeline (27), heating device (26) connects three-level feeder pipe (25), the third of heating device (26)
Port connects breeze blowing pipeline (30), and the 4th port connection combustion air of heating device (26) comes pipe (31), heating device
(26) fifth port connection coal gas comes pipe (32)；The first port of Category Four cyclone cylinder (28) connects three-level heat exchange pipeline (24),
The second port of Category Four cyclone cylinder (28) connects hot mine feeder pipe (29), and the third port connection level Four of Category Four cyclone cylinder (28) is changed
Heat pipeline.
3. miberal powder according to claim 2 efficiently preheats prereduction device, which is characterized in that raw ore connects expects pipe (16) connection
On level-one heat exchange pipeline (18), level-one feeder pipe (19) is connected on secondary heat exchange pipeline (24), and second level feeder pipe (22) is even
It connects on three-level heat exchange pipeline (24).
4. miberal powder according to claim 1 efficiently preheats prereduction device, which is characterized in that Iron Ore Powder pre-heating system (4)
The preheating for being included is classified as second level, three-level, level Four, Pyatyi or multistage, while being single series, bi serie or multi-series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821098154.9U CN208748180U (en) | 2018-07-11 | 2018-07-11 | A kind of Iron Ore Powder efficiently preheats prereduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821098154.9U CN208748180U (en) | 2018-07-11 | 2018-07-11 | A kind of Iron Ore Powder efficiently preheats prereduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208748180U true CN208748180U (en) | 2019-04-16 |
Family
ID=66057194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821098154.9U Active CN208748180U (en) | 2018-07-11 | 2018-07-11 | A kind of Iron Ore Powder efficiently preheats prereduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208748180U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660310A (en) * | 2018-07-11 | 2018-10-16 | 北京首钢国际工程技术有限公司 | A kind of Iron Ore Powder efficiently preheats prereduction device and technique |
| CN110803526A (en) * | 2019-11-26 | 2020-02-18 | 内蒙古赛思普科技有限公司 | Feeding and conveying system and method for smelting reduction furnace |
-
2018
- 2018-07-11 CN CN201821098154.9U patent/CN208748180U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660310A (en) * | 2018-07-11 | 2018-10-16 | 北京首钢国际工程技术有限公司 | A kind of Iron Ore Powder efficiently preheats prereduction device and technique |
| CN110803526A (en) * | 2019-11-26 | 2020-02-18 | 内蒙古赛思普科技有限公司 | Feeding and conveying system and method for smelting reduction furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103667571B (en) | System and method of fluidized direct reduction of iron ore concentrate powder | |
| CN103031433B (en) | Fluidized oxidation roasting-fluidized reduction roasting system and roasting process for titaniferous iron concentrate | |
| CN103031432A (en) | System for fluidized oxidizing/reducing roasting modification of titaniferous iron concentrate and roasting process | |
| CN105112577B (en) | Dry granulating blast furnace slag waste heat recovery device and blast furnace slag waste heat recovery method | |
| CN106868245B (en) | A kind of molten iron making processes of two-step method | |
| CN106011457B (en) | A kind of refractory iron ore mountain flour magnetizing roast system and technique | |
| CN108374067A (en) | A kind of device and method of reduction direct steelmaking at full speed | |
| JP2009521605A (en) | Molten iron manufacturing method with improved charging and discharging of fine iron ore and molten iron manufacturing apparatus using the same | |
| CN108660310A (en) | A kind of Iron Ore Powder efficiently preheats prereduction device and technique | |
| CN102409124A (en) | Continued ironmaking device based on melting reduction | |
| CN208748180U (en) | A kind of Iron Ore Powder efficiently preheats prereduction device | |
| CN112981027A (en) | Direct smelting process device for iron-containing zinc-containing solid waste in iron and steel plant | |
| CN101445850A (en) | Suspended secondary fast reduction process for iron-containing materials and device therefor | |
| CN214694260U (en) | Direct smelting process device for iron-containing zinc-containing solid waste in iron and steel plant | |
| CN109680114B (en) | System and method for gasifying pulverized coal and reducing iron ore in cooperation | |
| CN103966380A (en) | Method for recycling dedusted powder in shaft furnace top gas | |
| CN105463140B (en) | A kind of high-temperature slag handles recovery system | |
| WO2018014148A1 (en) | Multistage roasting-smelting method and equipment for reduction ironmaking | |
| CN102002546B (en) | Iron-containing material suspending and reducing device and process | |
| JP4279785B2 (en) | Hot metal production apparatus for dry-air feeding iron ore and auxiliary materials and hot metal production method | |
| CN101792840B (en) | Ferrous material injection reduction furnace and ferrous material injection reduction process | |
| CN201381333Y (en) | Iron-bearing material suspension two-stage fast reducing furnace | |
| CN101307372A (en) | Device for manufacturing and reducing crust pellet and production process | |
| CN207452218U (en) | A kind of suspension preheating melting and reducing ferronickel production equipment | |
| CN207552397U (en) | A kind of iron ore fluidization suspension preheating prereduction device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |