CN107177735A - The system and method for producing ferrochrome - Google Patents
The system and method for producing ferrochrome Download PDFInfo
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- CN107177735A CN107177735A CN201710516412.4A CN201710516412A CN107177735A CN 107177735 A CN107177735 A CN 107177735A CN 201710516412 A CN201710516412 A CN 201710516412A CN 107177735 A CN107177735 A CN 107177735A
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- 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
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/06—Alloys
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- 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
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
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Abstract
The invention discloses a kind of system for producing ferrochrome and the method for production ferrochrome, the system of production ferrochrome includes：Pre-reducing furnace, mineral hot furnace, reduction feed bin and hot sending system, pre-reducing furnace are used for pre-reduced pellet, and pre-reducing furnace has discharging opening；Mineral hot furnace has charge door；Reducing has reducing agent in feed bin, reduction feed bin is exported provided with reducing agent, and reducing material position in storehouse is between pre-reducing furnace and mineral hot furnace；Hot sending system includes batch can, waggon and lifting device, batch can is detachably arranged on waggon, waggon is configured to transport batch can between pre-reducing furnace, mineral hot furnace and reduction feed bin, batch can is suitable to discharging opening and reducing agent outlet receive pre-reducing furnace respectively and reduce the material in feed bin, lifting device is configured to batch being transported to the charge door of mineral hot furnace, and the material in batch can is poured into mineral hot furnace.The system of production ferrochrome according to embodiments of the present invention, helps to reduce the melting electric consumption of ferrochrome.
Description
Technical field
The present invention relates to metal smelt technical field, more particularly, to a kind of system and method for producing ferrochrome.
Background technology
In correlation technique, the smelting process of ferrochrome is mainly mineral hot furnace technique, main to use block stock or block
It is distributed under shape sintering deposit material, cold conditions in mineral hot furnace, then carries out pyrolytic semlting and obtains ferrochrome.Because cold conditions material enters stove,
Need material to be first increased to 1500 DEG C or so in stove to be reduced, 1800 DEG C or so fusing separation are then warming up to again, plus
The hot substantial amounts of electric energy that heated up with Reducing and absorption, causes the melting electric consumption of ferrochrome per ton to reach 3300Kwh, energy consumption is higher.
In addition, in rotary kiln or rotary hearth furnace smelt ferrochrome new technology, chromite pelletizing first passes through in rotary kiln or turns bottom
In stove at 1200 DEG C~1400 DEG C certain time prereduction, then discharge and deliver to mine heat furnace smelting again.The pelletizing of high temperature discharging
With substantial amounts of waste heat, this partial heat is used can as far as possible, it will significantly reduced in follow-up mine heat furnace smelting
The melting electric consumption of alloy product, but limited by device and material, this part high-temperature residual heat that to be used also exists certain
Difficulty, or without highly effective method.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes a kind of life
The system for producing ferrochrome, the system can make full use of the waste heat of material, help to reduce the energy consumption needed for ferrochrome smelting.
It is another object of the present invention to propose a kind of method for producing ferrochrome.
According to a first aspect of the present invention embodiment production ferrochrome system, including：Pre-reducing furnace, the prereduction
Stove is used for pre-reduced pellet, and the pre-reducing furnace has discharging opening；Mineral hot furnace, the mineral hot furnace has charge door；Reduce feed bin,
There is reducing agent, the reduction feed bin is exported provided with reducing agent, and the reducing material position in storehouse is in described pre- in the reduction feed bin
Between reduction furnace and the mineral hot furnace；Hot sending system, the hot sending system includes batch can, waggon and lifting device, the material
Tank is detachably arranged on the waggon, and the waggon is configured in the pre-reducing furnace, the reduction feed bin and institute
State and the batch can is transported between mineral hot furnace, the batch can is suitable to the discharging opening and the reducing agent outlet connect respectively
Receive the material in the pre-reducing furnace and the reduction feed bin, the lifting device is configured to the batch being transported to described
The charge door of mineral hot furnace by the material in the batch can to pour into the mineral hot furnace.
The system of production ferrochrome according to embodiments of the present invention, by being heat-fed system by the high temperature pelletizing after prereduction
Mineral hot furnace is delivered to, the waste heat of pelletizing after prereduction is sufficiently used, so as to rapidly add material in mineral hot furnace
Heat significantly reduces energy consumption of the pelletizing in mine heat furnace smelting to more than 1300 DEG C of high temperature, accelerates the progress of deep reduction.
Meanwhile, batch can first receives reducing agent, then receives the high temperature pelletizing after prereduction, can reduce reducing agent and air exclusion also
The loss of former agent.
According to some embodiments of the present invention, the system of described production ferrochrome further comprises：Auxiliary material storehouse, it is described
There is auxiliary material, the auxiliary material storehouse is provided with auxiliary feed outlet, and the auxiliary feed outlet is suitable to connect with the batch can, described in auxiliary material storehouse
Auxiliary material position in storehouse is between the pre-reducing furnace and the mineral hot furnace.Thus, it is possible to which auxiliary material to be covered in the high temperature ball after prereduction
In group, pelletizing waste-heat auxiliary material on the one hand can be utilized, on the other hand air can be completely cut off by auxiliary material, reduce pelletizing and air
The chance of contact, it is to avoid the generation of secondary oxidation reaction.
According to some specific embodiments of the present invention, the pre-reducing furnace, the auxiliary material storehouse, the reduction feed bin and described
Mineral hot furnace is in rods arranged in horizontal line.The displacement of waggon is shortened, so that the shipping time is shortened, while also reducing production
The overall floor space of the system of chromite so that the layout of the system of production chromite is compacter, reasonable.
Further, the hot sending system also includes：Transmission track, the waggon is movably arranged at the transmission rail
On road, the transmission track is located between the pre-reducing furnace and the mineral hot furnace.Thus, it is possible to which so that waggon is in transmission rail
Moved on road, be easy to control the moving direction of waggon, efficiently avoid waggon sideslip, improve the reliable of hot sending system
Property.
According to some embodiments of the present invention, the hot sending system to be multiple, the discharging opening, reducing agent outlet and
Be respectively equipped with tremie pipe at the auxiliary feed outlet, the tremie pipe includes many sub- tremie pipes, multiple sub- tremie pipes with it is many
The individual hot sending system is corresponded, one end of multiple sub- tremie pipes of each tremie pipe respectively with it is corresponding described
Discharging opening, the reducing agent outlet be connected with the auxiliary feed outlet, the other end is respectively facing the corresponding hot sending system
Extension.Thus, it is possible to convey material into mineral hot furnace by multiple hot sending systems, formation efficiency is effectively improved, is reduced
Manufacturing cost.
Alternatively, each tremie pipe includes two sub- tremie pipes, two sub- tremie pipes switchably with
The corresponding discharging opening, reducing agent outlet are connected with the auxiliary feed outlet.
Specifically, the angle between the two neighboring sub- tremie pipe of each tremie pipe is α, and the α is met：
45°≤α≤60°.Thus, will not because the angle between two sub- tremie pipes is excessive and when causing load big discharging it is not smooth,
Putty is caused, also will not be because the angle between two sub- tremie pipes is too small and influences discharging efficiency.
Further, it is provided with cover at the top of the batch can.Cover can play a part of sealing and be incubated, and reduce batch can
The loss of interior temperature of charge, while material can also be made to completely cut off air, reduce the chance of pelletizing and air contact, it is to avoid material
Aoxidize.
The method of the production ferrochrome of embodiment, including according to above-mentioned first party of the invention according to a second aspect of the present invention
The device of the production ferrochrome of face embodiment, the method for the production ferrochrome comprises the following steps：
The pelletizing processed feeding pre-reducing furnace is subjected to prereduction；
Batch can is transported at reduction feed bin, the reduction of certain mass is added into the batch can by the reduction feed bin
Agent；
Batch can is transported at pre-reducing furnace, adding the pre- of certain mass into the batch can by the pre-reducing furnace goes back
Pelletizing after original；
Batch can is transported at mineral hot furnace, batch can is transported to by batch can by the charge door of mineral hot furnace by lifting device
Material pour into mineral hot furnace.
The method of production ferrochrome according to embodiments of the present invention, by being heat-fed system by the high temperature pelletizing after prereduction
Mineral hot furnace is delivered to, the waste heat of pelletizing after prereduction is sufficiently used, so as to rapidly add material in mineral hot furnace
Heat significantly reduces energy consumption of the pelletizing in mine heat furnace smelting to more than 1300 DEG C of high temperature, accelerates the progress of deep reduction.
Meanwhile, batch can is received before the high temperature pelletizing after prereduction, is first received reducing agent, can be made reducing agent and air exclusion, it is to avoid also
Oxidation reaction occurs for former agent, reduces the loss of reducing agent.
According to some further embodiments of the present invention, batch can is transported at pre-reducing furnace, receives pre- in pre-reducing furnace
It is further comprising the steps of after pelletizing after reduction：Batch can is transported to auxiliary material Cang Chu, added by auxiliary material storehouse into the batch can
The auxiliary material of certain mass.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram of the system of production ferrochrome according to embodiments of the present invention；
Fig. 2 is the schematic diagram of pre-reducing furnace according to embodiments of the present invention；
Fig. 3 is the schematic diagram of reduction feed bin according to embodiments of the present invention；
Fig. 4 is the schematic diagram in auxiliary material storehouse according to embodiments of the present invention.
Reference：
The system 100 of ferrochrome is produced,
Pre-reducing furnace 1, discharging opening 11, the first tremie pipe 12, the first sub- tremie pipe 121a, the first sub- tremie pipe 121b,
First baffle 122, pelletizing 13,
Mineral hot furnace 2,
Feed bin 3 is reduced, reducing agent exports 31,
Second tremie pipe 32, the second sub- tremie pipe 321a, the second sub- tremie pipe 321b, second baffle 322,
Reducing agent 33,
Auxiliary material storehouse 4, auxiliary feed outlet 41,
3rd tremie pipe 42, the 3rd sub- tremie pipe 421a, the 3rd sub- tremie pipe 421b, third baffle 422,
Auxiliary material 43,
First hot sending system 51, the first batch can 511, the first waggon 512, the first transmission track 513,
First lifting device 514,
Second hot sending system 52, the second batch can 521, the second waggon 522, the second transmission track 523,
Second lifting device 524.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are based on orientation shown in the drawings or position
Relation, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must have
There is specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, defining
One or more this feature can be expressed or be implicitly included to the feature of " first ", " second ".
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The system 100 of production ferrochrome according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 4.
As shown in figure 1, the system 100 of production ferrochrome according to an embodiment of the invention, including：Pre-reducing furnace 1,
Mineral hot furnace 2, reduction feed bin 3 and hot sending system.
Wherein, pre-reducing furnace 1 is used for pre-reduced pellet 13, and pre-reducing furnace 1 has discharging opening 11, and discharging opening 11 can be located at
The bottom of pre-reducing furnace 1.Mineral hot furnace 2 has charge door, and charge door can be located at the top of mineral hot furnace 2.Specifically, pre-reducing furnace
1 can be rotary hearth furnace or rotary kiln etc., and pelletizing 13 can be chromite carbonaceous pelletizing 13.Chromite carbonaceous pelletizing 13 can be
Prereduction certain time under conditions of 1200 DEG C~1400 DEG C in pre-reducing furnace 1, mineral hot furnace 2 is then delivered to again and is smelted.Need
It is noted that the pelletizing process of chromite carbonaceous pelletizing 13 and operation are all known for those of ordinary skills
, it is not detailed herein.
Reducing has reducing agent 33 in feed bin 3, reduction feed bin 3 is provided with reducing agent outlet 31, and reduction feed bin 3 is located at pre- go back
Between former stove 1 and mineral hot furnace 2.Hot sending system includes batch can, waggon and lifting device, and batch can is detachably arranged in waggon
On, waggon is configured to transport batch can between pre-reducing furnace 1, reduction feed bin 3 and mineral hot furnace 2, and batch can is suitable to and discharging opening
11 are connected with reducing agent outlet 31, and to receive the material in pre-reducing furnace 1 and reduction feed bin 3 respectively, lifting device is configured to
Batch can is transported to the charge door of mineral hot furnace 2 material in batch can is poured into mineral hot furnace 2.
Alternatively, reducing agent 33 can be coke, and reduction feed bin 3 is coke feed bin.Waggon can include sweep and car
Wheel, wheel, which is located on the lower section of sweep, sweep, can set deck, thus, be easy to waggon to move and will easily can expect
Tank is engaging on sweep so that the position of batch can is stable.
Batch can be high temperature resistant batch can, and the top of batch can be provided with charging aperture.Waggon can be as needed by material
Tank is transported at reduction feed bin 3, pre-reducing furnace 1 and mineral hot furnace 2.Specifically, waggon can be configured to first transport batch can
Deliver to and reducing agent 33 is received at reduction feed bin 3, then batch can is transported to the pelletizing 13 received in pre-reducing furnace 1 after prereduction.
For example, during material is received, waggon can be first moved at reduction feed bin 3 so that reduce going back for feed bin 3
Former agent outlet 31 is connected with batch can, is added the reducing agent 33 of certain mass into batch can by reducing feed bin 3, is then moved to again
At pre-reducing furnace 1 so that the discharging opening 11 of pre-reducing furnace 1 is connected with batch can, and certain matter is added into feed bin by pre-reducing furnace 1
Pelletizing 13 after the prereduction of amount, then be moved at mineral hot furnace 2, batch can is lifted from the sweep of waggon by lifting device
And the charge door of mineral hot furnace 2 is transported to, the material (pelletizing 13 i.e. after reducing agent 33 and prereduction) in batch can is poured into ore deposit heat
In stove 2, then batch can is placed on waggon by lifting device again, above procedure is repeated.
Thus, it is possible to which the high temperature pelletizing 13 after prereduction is delivered into mineral hot furnace 2 by hot sending system, it is sufficiently used
The waste heat of pelletizing 13 after prereduction, so as to which material to be rapidly heated to more than 1300 DEG C of high temperature in mineral hot furnace 2, shows
Reduce energy consumption of the pelletizing 13 when mineral hot furnace 2 is smelted with writing, accelerate the progress of deep reduction.Meanwhile, receiving the mistake of material
Cheng Zhong, batch can first receives reducing agent 33, then receives the high temperature pelletizing 13 after prereduction, can by reducing agent 33 and air exclusion,
Avoid reducing agent 33 from occurring oxidation reaction with air, reduce the loss of reducing agent 33.
The system 100 of production ferrochrome according to embodiments of the present invention, by being heat-fed system by the high temperature after prereduction
Pelletizing 13 is delivered to mineral hot furnace 2, is sufficiently used the waste heat of pelletizing 13 after prereduction, so as to quick in mineral hot furnace 2
Material is heated to more than 1300 DEG C of high temperature by ground, significantly reduces energy consumption of the pelletizing 13 when mineral hot furnace 2 is smelted, accelerates
The progress of deep reduction.Meanwhile, during material is received, batch can first receives reducing agent 33, then receives the high temperature after prereduction
Pelletizing 13, by reducing agent 33 and air exclusion, can reduce the loss of reducing agent 33.
According to some embodiments of the present invention, the system 100 of production ferrochrome further comprises：Auxiliary material storehouse 4, auxiliary material storehouse
There is auxiliary material 43, auxiliary material storehouse 4 is provided with auxiliary feed outlet 41, and auxiliary feed outlet 41 is suitable to connect with batch can, and auxiliary material storehouse 4 is located at pre- in 4
Between reduction furnace 1 and mineral hot furnace 2.Wherein, auxiliary material 43 can be silica, and auxiliary material storehouse 4 is silica feed bin.Auxiliary feed outlet 41 can be set
Lower section in auxiliary material storehouse 4.Batch can is received after the pelletizing 13 after prereduction, auxiliary material Cang4Chu can be transported to by waggon so that auxiliary
Material outlet 41 is connected with batch can, and auxiliary material 43 is added into batch can.Thus, it is possible to which auxiliary material 43 to be covered in the high temperature ball after prereduction
In group 13, the waste-heat auxiliary material 43 of pelletizing 13 on the one hand can be utilized, on the other hand air can be completely cut off by auxiliary material 43, reduce ball
Group 13 and the chance of air contact, it is to avoid the generation of secondary oxidation reaction.
According to some specific embodiments of the present invention, pre-reducing furnace 1, auxiliary material storehouse 4, reduction feed bin 3 and mineral hot furnace 2 can be in
Rods arranged in horizontal line.That is, pre-reducing furnace 1, auxiliary material storehouse 4, reduction feed bin 3 and mineral hot furnace 2 can be arranged with generally straight shape.
Here, it is necessary to illustrate it is that " in-line " in the application should broadly understood, i.e., without proper word row.Wherein,
The particular location of auxiliary material storehouse 4 and reduction feed bin 3 is not construed as limiting.That is, auxiliary material storehouse 4 can be set adjacent to pre-reducing furnace 1,
It can be set adjacent to mineral hot furnace 2.For example, pre-reducing furnace 1, reduction feed bin 3, auxiliary material storehouse 4 and mineral hot furnace 2 can be in a first direction
It is arranged at intervals.Wherein first direction can be the left and right directions in Fig. 1.
Thus, during waggon is moved from mineral hot furnace 2 to pre-reducing furnace 1, by reducing during feed bin 3, it can pass through
Reduction feed bin 3 adds the reducing agent 33 of certain mass into batch can, and after the completion of charging, waggon carries batch can and is moved to prereduction
Stove 1, receives the high temperature pelletizing 13 after the prereduction of certain mass, and then waggon carries the process that batch can is moved to mineral hot furnace 2
In, during by auxiliary material storehouse 4, the auxiliary material 43 of certain mass is added into batch can by auxiliary material storehouse 4, mineral hot furnace 2 is finally moved to attached
Closely, the displacement of waggon is shortened, so that the shipping time is shortened, while also reducing the whole of the system of production chromite
Body floor space so that the layout of the system of production chromite is compacter, reasonable.In addition, may be such that waggon is entirely being transported
Moved along a straight line during sending, the moving direction of convenient control waggon, it is to avoid waggon is because of turn run-off the straight or deviates biography
Send the phenomenons such as track.
Further, hot sending system also includes：Transmission track, waggon is movably arranged on transmission track, transmits rail
Road is located between pre-reducing furnace 1 and mineral hot furnace 2.Alternatively, transmission track can be formed as the track of linear.Thus, it is possible to
So that waggon is moved on transmission track, it is easy to control the moving direction of waggon, efficiently avoid waggon sideslip, carry
The high reliability of hot sending system.
According to some embodiments of the present invention, hot sending system is multiple, discharging opening 11, reducing agent outlet 31 and auxiliary feed outlet
Tremie pipe is respectively equipped with 41, tremie pipe includes many sub- tremie pipes, and many sub- tremie pipes are corresponded with multiple hot sending systems,
One end of many sub- tremie pipes of each tremie pipe exports 31 and the phase of auxiliary feed outlet 41 with corresponding discharging opening 11, reducing agent respectively
Even, the other end of many sub- tremie pipes is respectively facing corresponding hot sending system extension.Specifically, sub- tremie pipe is above-mentioned another
One end can extend towards the transmission track of corresponding hot sending system.Here, it is necessary to illustrate, in description of the invention
In, unless otherwise indicated, " multiple " are meant that two or more.Thus, it is easy to pre-reducing furnace by sub- tremie pipe
1st, the material in reduction feed bin 3, auxiliary material storehouse 4 and mineral hot furnace 2 is delivered in batch can, while can be by multiple hot sending systems to ore deposit
Conveying material, is effectively improved formation efficiency, reduces manufacturing cost in hot stove 2.
Alternatively, sub- tremie pipe can be formed as rectangular tube, but not limited to this.For example, sub- tremie pipe may be formed as
Cylindrical tube etc..
For example, referring to Fig. 1-Fig. 4, in one particular embodiment of the present invention, each tremie pipe includes two sub- blankings
Pipe, hot sending system is two, and two sub- tremie pipes switchably export 31 and auxiliary feed outlet with corresponding discharging opening 11, reducing agent
41 connections.Specifically, the first sub- sub- tremie pipe 121b of tremie pipe 121a and first are switchably connected with discharging opening 11, and second
The sub- sub- tremie pipe 321b of tremie pipe 321a and second switchably 31 are connected with reducing agent outlet, the 3rd sub- tremie pipe 421a and the
Three sub- tremie pipe 421b are switchably connected with auxiliary feed outlet 41.
For convenience of describing, in the following description, the tremie pipe at discharging opening 11 is referred to as " the first tremie pipe 12 ", first
Two sub- tremie pipes of tremie pipe 12 are referred to as " the first sub- tremie pipe 121a " and " the first sub- tremie pipe 121b ", reducing agent goes out
Tremie pipe at mouthfuls 31 is referred to as that " the second tremie pipe 32 ", two sub- tremie pipes of the second tremie pipe 32 are referred to as " under the second son
Expects pipe 321a " and " tremie pipe at the second sub- tremie pipe 321b ", auxiliary feed outlet 41 is referred to as " the 3rd tremie pipe 42 ", the 3rd blanking
Two sub- tremie pipes of pipe 42 are referred to as " the 3rd sub- tremie pipe 421a " and " the 3rd sub- tremie pipe 421b ".
Two hot sending systems are referred to as " the first hot sending system 51 " and " the second hot sending system 52 ".First hot sending system
Batch can, waggon, transmission track and lifting device in 51 are referred to as the first batch can 511, the first waggon 512, first and passed
Send the lifting device 514 of track 513 and first；Correspondingly, in the second hot sending system 52 batch can, waggon, transmission track and carry
Rise device and be referred to as the second batch can 521, the second waggon 522, the second transmission track 523 and the second lifting device 524.Its
In, the first sub- tremie pipe 121a, the second sub- sub- tremie pipe 421a of tremie pipe 321a and the 3rd are suitable to and the first hot sending system 51
First batch can 511 connects to feed into the first batch can 511；First sub- tremie pipe 121b, the second sub- tremie pipe 321b and the 3rd
Sub- tremie pipe 421b is suitable to connect with the second batch can 521 of the second hot sending system 52 to feed into the second batch can 521.
Reference picture 1, the first hot sending hot sending of system 51 and second system 52 can be spaced apart setting in a second direction, and the
One transmission track 513 and the second transmission track 523 are extended in a first direction and are parallel to each other.Second direction can be with first direction
Vertically.
For example, the first tremie pipe 12, the second tremie pipe 32 and the 3rd tremie pipe 42 can generally form inverted V-shaped.Under first
One end of the neighbouring discharging opening 11 of expects pipe 12 is provided with first baffle 122, and first baffle 122 is blocking the first sub- tremie pipe 121a's
It may be reversed between first position and the second place for blocking the first sub- tremie pipe 121b.When first baffle 122 is located at first position
When, first baffle 122 is overturn between the first sub- tremie pipe 121a and discharging opening 11, the first sub- tremie pipe 121a and discharging opening 11
Do not connect, the first sub- tremie pipe 121b is connected with discharging opening 11, now can be by the first sub- tremie pipe 121b to corresponding material
Fed in tank；When first baffle 122 overturns the second place, first baffle 122 is overturn to the first sub- tremie pipe 121b and discharging
Between mouth 11, the first sub- tremie pipe 121b is not connected with discharging opening 11, and the first sub- tremie pipe 121a is connected with discharging opening 11, now
It can be fed by the first sub- tremie pipe 121a into corresponding batch can.Thus, it is possible to easily switch the first tremie pipe 12
Discharge direction.
Correspondingly, one end of the neighbouring reducing agent outlet 31 of the second tremie pipe 32 can be set under second baffle 322, the 3rd
One end of the neighbouring auxiliary feed outlet 41 of expects pipe 42 can set third baffle 422, second baffle 322, the structure of third baffle 422
Can be identical with first baffle 122 with position, it will not be repeated here.
Alternatively, the first tremie pipe 12 can be integrally formed with pre-reducing furnace 1, and the second tremie pipe 32 can be with reduction feed bin
3 are integrally formed, and the 3rd tremie pipe 42 can be integrally formed with auxiliary material storehouse 4.
Specifically, the angle between the two neighboring sub- tremie pipe of each tremie pipe is α, and α is met：45°≤α≤60°.Its
Concrete numerical value can be according to practical condition adjusted design.Thus, will not be excessive because of the angle between two sub- tremie pipes
And discharging is not smooth when causing load big, putty is caused, also will not be because the angle between two sub- tremie pipes is too small and influences
Discharge efficiency.
For example, the angle α between the two neighboring sub- tremie pipe of each tremie pipe can further be met：α=45 °, α=
50 °, α=60 ° etc..
Specifically, waggon is provided with weighing device to weigh to the material in batch can.Thus, it is possible to easily right
The material that batch can is received is weighed, and is easy to receive different materials in proportion.
Further, cover is provided with the top of batch can.Cover can be arranged on the charging aperture of batch can.Cover can play close
Envelope and the effect of insulation, reduce the loss of temperature of charge in batch can, while material can also be made to completely cut off air, reduce pelletizing 13
With the chance of air contact, it is to avoid material is aoxidized.
One specific embodiment of the system 100 of production ferrochrome according to embodiments of the present invention is described below.
As shown in figure 1, the system 100 of production ferrochrome includes：Pre-reducing furnace 1, mineral hot furnace 2, reduction feed bin 3, auxiliary material
The hot sending of the storehouse 4 and first hot sending system 52 of system 51 and second.
Reduce feed bin 3 and auxiliary material storehouse 4 is located between pre-reducing furnace 1 and mineral hot furnace 2, pre-reducing furnace 1, reduction feed bin 3, auxiliary material
Storehouse 4 and mineral hot furnace 2 are arranged at intervals in a first direction, between the first hot sending system 51 and second is heat-fed system 52 in a second direction
Every setting, the first transmission track 513 of the first hot sending system 51 and the second transmission track 523 of the second hot sending system 52 are mutually flat
OK.
The bottom of pre-reducing furnace 1, which is provided with discharging opening 11, discharging opening 11, is provided with the first tremie pipe 12, and the first tremie pipe 12 is wrapped
Include the first sub- sub- tremie pipe 121b of tremie pipe 121a and first, the first sub- sub- tremie pipe 121b of tremie pipe 121a and first upper end
It is connected respectively with discharging opening 11, the first sub- sub- tremie pipe 121b of tremie pipe 121a and first lower end is respectively facing away from each other
Direction extends.One end (i.e. lower end in Fig. 2) of the neighbouring discharging opening 11 of first tremie pipe 12 is provided with first baffle 122, first
Baffle plate 122 can between the first sub- tremie pipe 121b of the first sub- tremie pipe 121a first position and closure second place is blocked
Upset, so that the first sub- sub- tremie pipe 121b of tremie pipe 121a and first are switchably connected with discharging opening 11.First sub- blanking
Angle between the sub- tremie pipe 121b of pipe 121a and first is 45 °.
Reducing has reducing agent 33 in feed bin 3, the bottom of reduction feed bin 3 is provided with reducing agent outlet 31, reducing agent outlet 31
Place, which is provided with the second tremie pipe 32, auxiliary material storehouse 4, has auxiliary material 43, and the bottom in auxiliary material storehouse 4 is provided with auxiliary feed outlet 41, auxiliary feed outlet 41
Place is provided with the 3rd tremie pipe 42.Wherein, the structure of the second tremie pipe 32 and the 3rd tremie pipe 42 and the structure of the first tremie pipe 32
It is substantially the same, will not be repeated here.
The transport process of material in the system 100 of production ferrochrome according to embodiments of the present invention is described below：
First batch can 511 is placed on the first waggon 512 being placed on the first transmission track 513, the second batch can 521
It is placed on the second waggon 522 being placed on the second transmission track 523, the first batch can 511 and the second batch can 521 connect pre- go back
Before high temperature pelletizing 13 in former stove 1 discharges, reduction feed bin 3 is first transported to by corresponding waggon and adds going back for specified wt
Former agent 33.First batch can 511 and the alternating splicing of the second batch can 521.
Specifically, the second tremie pipe 32 can first add the reducing agent 33 of specified wt into the first batch can 511, then cut
The position of second baffle 322 is changed, is fed by the second tremie pipe 32 for the second batch can 521 in the second hot sending system 52, second
Tremie pipe 32 is that the first batch can 511 is transported to going out for pre-reducing furnace 1 by the first waggon 512 during the second batch can 521 feeds
Material mouth 11, prepares splicing.High temperature pelletizing 13 after prereduction is put into the first batch can 511 from the discharging opening 11 of pre-reducing furnace 1, is gone out
When doses reaches the weight specified, stop splicing, and switch the position of first baffle 122, be second by the first tremie pipe 12
The second batch can 521 in hot sending system 52 feeds.
Corresponding batch can is delivered to before mineral hot furnace 2 by waggon, and corresponding batch can first is transported into auxiliary material Cang4Chu additions refers to
Determine the auxiliary material 43 of weight.Specifically, the auxiliary material 43 of specified wt can be first added into the first batch can 511, then switches the 3rd
The position of baffle plate 422, is that the second batch can 521 feeds by the 3rd tremie pipe 42.Then by the first lifting device 514 by the first material
Tank 511 is promoted to mineral hot furnace 2, and the material in the first batch can 511 is poured into mineral hot furnace 2, added into mineral hot furnace 2 after material, by
First batch can 511 is positioned on the first waggon 512 by the first lifting device 514, and the first waggon 512 is in the first transmission track
The first batch can 511 return reduction feed bin 3 is carried on 513 to feed, and repeats said process.
Other of the system 100 of production ferrochrome according to embodiments of the present invention are constituted and operated general for this area
All it is known for logical technical staff, is not detailed herein.
The method of the production ferrochrome of embodiment, including according to the above embodiment of the present invention according to a second aspect of the present invention
Production ferrochrome device, production ferrochrome method comprise the following steps：
The pelletizing 13 processed is sent into pre-reducing furnace 1 and carries out prereduction；
Batch can is transported at reduction feed bin 3, the reducing agent 33 of certain mass is added into batch can by reducing feed bin 3；
Batch can is transported at pre-reducing furnace 1, added by pre-reducing furnace 1 into batch can after the prereduction of certain mass
Pelletizing 13；
Batch can is transported at mineral hot furnace 2, batch can is transported to by batch can by the charge door of mineral hot furnace 2 by lifting device
Interior material pours into mineral hot furnace 2.
Thus, it is possible to which the high temperature pelletizing 13 after prereduction is delivered into mineral hot furnace 2 by hot sending system, it is sufficiently used
The waste heat of pelletizing 13 after prereduction, so as to which material to be rapidly heated to more than 1300 DEG C of high temperature in mineral hot furnace 2, shows
Reduce energy consumption of the pelletizing 13 when mineral hot furnace 2 is smelted with writing, accelerate the progress of deep reduction.Meanwhile, batch can receives prereduction
Before high temperature pelletizing 13 afterwards, reducing agent 33 is first received, reducing agent 33 and air exclusion can be made, it is to avoid reducing agent 33 is aoxidized
Reaction, reduces the loss of reducing agent 33.
According to some further embodiments of the present invention, batch can is transported at pre-reducing furnace 1, received in pre-reducing furnace 1
It is further comprising the steps of after pelletizing 13 after prereduction：Batch can is transported to auxiliary material Cang4Chu, added by auxiliary material storehouse 4 into batch can
Enter the auxiliary material 43 of certain mass.Thus, it is possible to auxiliary material 43 is covered on the high temperature pelletizing 13 after prereduction, it is on the one hand available
The waste heat of pelletizing 13 carries out heating auxiliary material 43, on the other hand can completely cut off air by auxiliary material 43, reduce pelletizing 13 and air contact
Chance, it is to avoid secondary oxidation reaction generation.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner be combined in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of system for producing ferrochrome, it is characterised in that including：
Pre-reducing furnace, the pre-reducing furnace is used for pre-reduced pellet, and the pre-reducing furnace has discharging opening；
Mineral hot furnace, the mineral hot furnace has charge door；
Reducing has reducing agent in feed bin, the reduction feed bin, the reduction feed bin is exported provided with reducing agent, the reducing material
Position in storehouse is between the pre-reducing furnace and the mineral hot furnace；
Hot sending system, the hot sending system includes batch can, waggon and lifting device, and the batch can is detachably arranged in described defeated
Send on car, the waggon is configured to transport described between the pre-reducing furnace, the reduction feed bin and the mineral hot furnace
Batch can, the batch can is suitable to the discharging opening and the reducing agent outlet receive the pre-reducing furnace respectively and described
Reduce feed bin in material, the lifting device be configured to by the batch can be transported to the charge door of the mineral hot furnace with
Material in the batch can is poured into the mineral hot furnace.
2. the system of production ferrochrome according to claim 1, it is characterised in that further comprise：
There is auxiliary material, the auxiliary material storehouse is provided with auxiliary feed outlet, and the auxiliary feed outlet is suitable to and institute in auxiliary material storehouse, the auxiliary material storehouse
Batch can connection is stated, the auxiliary material position in storehouse is between the pre-reducing furnace and the mineral hot furnace.
3. the system of production ferrochrome according to claim 2, it is characterised in that the pre-reducing furnace, the auxiliary material
Storehouse, the reduction feed bin and the mineral hot furnace are in rods arranged in horizontal line.
4. the system of production ferrochrome according to claim 2, it is characterised in that the hot sending system also includes：
Transmission track, the waggon is movably arranged on the transmission track, and the transmission track is located at the prereduction
Between stove and the mineral hot furnace.
5. the system of the production ferrochrome according to any one of claim 2-4, it is characterised in that the hot sending system
To be multiple, tremie pipe is respectively equipped with the discharging opening, reducing agent outlet and the auxiliary feed outlet, the tremie pipe includes
Many sub- tremie pipes, multiple sub- tremie pipes are corresponded with multiple hot sending systems, and each the tremie pipe is multiple
One end of the sub- tremie pipe is connected, separately with the corresponding discharging opening, reducing agent outlet and the auxiliary feed outlet respectively
One end is respectively facing corresponding hot sending system extension.
6. the system of production ferrochrome according to claim 5, it is characterised in that each tremie pipe includes two
The sub- tremie pipe, two sub- tremie pipes are switchably exported and described with the corresponding discharging opening, the reducing agent
Auxiliary feed outlet is connected.
7. the system of production ferrochrome according to claim 5, it is characterised in that adjacent the two of each tremie pipe
Angle between the individual sub- tremie pipe is α, and the α is met：45°≤α≤60°.
8. the system of production ferrochrome according to claim 1, it is characterised in that cover is provided with the top of the batch can.
9. a kind of method for producing ferrochrome, it is characterised in that including the production according to any one of claim 1-8
The device of ferrochrome, the method for the production ferrochrome comprises the following steps：
The pelletizing processed feeding pre-reducing furnace is subjected to prereduction；
Batch can is transported at reduction feed bin, the reducing agent of certain mass is added into the batch can by the reduction feed bin；
Batch can is transported at pre-reducing furnace, added by the pre-reducing furnace into the batch can after the prereduction of certain mass
Pelletizing；
Batch can is transported at mineral hot furnace, batch can is transported to by the thing in batch can by the charge door of mineral hot furnace by lifting device
Material pours into mineral hot furnace.
10. the method for production ferrochrome according to claim 9, it is characterised in that batch can is transported to pre-reducing furnace
It is further comprising the steps of after pelletizing in place, reception pre-reducing furnace after prereduction：
Batch can is transported to auxiliary material Cang Chu, the auxiliary material of certain mass is added into the batch can by auxiliary material storehouse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710516412.4A CN107177735A (en) | 2017-06-29 | 2017-06-29 | The system and method for producing ferrochrome |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710516412.4A CN107177735A (en) | 2017-06-29 | 2017-06-29 | The system and method for producing ferrochrome |
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