CN106521145A - Method and device for improving burning efficiency of sintering fuel - Google Patents
Method and device for improving burning efficiency of sintering fuel Download PDFInfo
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- CN106521145A CN106521145A CN201610982185.XA CN201610982185A CN106521145A CN 106521145 A CN106521145 A CN 106521145A CN 201610982185 A CN201610982185 A CN 201610982185A CN 106521145 A CN106521145 A CN 106521145A
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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
- 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
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Abstract
The invention provides a method and device for improving the burning efficiency of a sintering fuel. The method comprises the steps of: preparing a material for sintering in a proportioning room; primarily mixing the material; secondarily mixing the material, wherein the water content of the secondarily mixed material is 6.0-8.0% by mass; distributing the secondarily mixed material to a sintering machine to form a sintered material surface; controlling the ignition temperature of the sintering machine at 1000-1200 DEG C, wherein slaked lime in the material is powdery; and when the material is prepared, adding 40-80% by mass of a fuel based on the total mass into the material in the proportioning room, and adding 20-60% by mass of the fuel based on the total mass into the material within the last 1 min of secondary mixing. In this way, lime is processed into powdery slaked lime by using a slaker; in the secondary mixing granulating process, the slaked lime does not encounter water to swell to prevent damage of the adhesion effect of the fuel which is added in secondary mixing, so that the fuel is prevented from being separated from other particles and being moved downward and brought by an exhaust fan; and finally, the using effect of the fuel is ensured, and the burning rate is improved.
Description
Technical field
The invention belongs to iron making and sintering material technical field, more particularly to a kind of device for improving sintering fuel efficiency of combustion.
Background technology
Sintering deposit provides heat mainly by fuel combustion in mineralizing process, works of the C in fuel in blower fan exhausting
Burn and transmit heat with from top to bottom successively, melt the breeze and flux of surrounding, so that sintering feed is bonded to ore deposit.Sintering
During fuel ratio normally only in 3-5%, after dispensing, mixing and pelletizing, most fuel is covered by breeze and flux,
Cause the combustion rate that fuel burns in sintering process not good.
In prior art, the later stage usually by part of fuel in secondary mixture material adds so that part of fuel is being burnt
Have with oxygen during knot and preferably contact.However, in actual sintered production, this method is difficult to and which after fuel point is added
He sticks together at material particles, causes fuel to come off so that the fuel divided after adding often is drawn onto the bed of material under sintering draft effect
Bottom, or even waste of fuel is caused during unburned is just drawn into sintering bellows.
Based on this, the present invention provides the method and device that a kind of sintering fuel point adds, of the prior art above-mentioned to solve
Problem.
The content of the invention
For the problem that prior art is present, method and dress that a kind of sintering fuel point adds are embodiments provided
Put, to solve in prior art, in sintering process, after sintering fuel point adds, it is difficult to be bonded together with unclassified stores particle,
The technical problem for causing sintering fuel combustion utilization efficiency low.
The present invention provides a kind of method for improving sintering fuel efficiency of combustion, and methods described includes：
Sintering material used is equipped with proportioning room；
Mixed once is carried out to the material；
Secondary mixing is carried out to the material, the mass percent of the water distribution quantity of the material is 6.0- after secondary mixing
8.0%；
The secondary mixed material is laid on sintering machine and forms sintering charge level；
The firing temperature for controlling the sintering machine is 1000～1200 DEG C, and the sintering charge level is sintered；Wherein, institute
It is powder to state the calcium hydroxide in material；Be equipped with the material when, by the 40-80% of fuel gross mass proportioning room add to
In the material, the 20-60% of the fuel gross mass is added into the material in the last 1min of secondary mixing.
In such scheme, the component of the material includes：
Iron Ore Powder, its mass percent are 50～80%；
Return mine, its mass percent is 10～30%；
Calcium hydroxide, its mass percent are 0～10%；
Dolomite, its mass percent are 0～10%；
Lime stone, its mass percent are 0～10%；
Fuel, its mass percent are 3～8%.
In such scheme, the firing temperature of the sintering machine is controlled for, after 1000～1200 DEG C, methods described also includes：
It is 7000～20000Pa to control to sinter negative pressure；
Control to light a fire negative pressure for 3000～15000Pa.
In such scheme, when being sintered to the sintering charge level, methods described also includes：In default sintering region
It is interior, using on the sintering charge level that damping device is sprayed at the remaining water yield on the sintering machine in vapour form.
In such scheme, the temperature of the steam is not less than 130 DEG C.
The present invention also provides a kind of device for improving sintering fuel efficiency of combustion, and described device includes：
Unit is equipped with, the outfit unit sinters material used for being equipped with proportioning room；
First mixed cell, first mixed cell is for carrying out mixed once to the material；
Second mixed cell, second mixed cell for secondary mixing is carried out to the material, institute after secondary mixing
The mass percent for stating the water distribution quantity of material is 6.0-8.0%；
Unit is laid, the laying unit forms sintering for the secondary mixed material is laid on sintering machine
Charge level；
First control unit, it is 1000～1200 that first control unit is used to control the firing temperature of the sintering machine
DEG C, the sintering charge level is sintered；Wherein, the calcium hydroxide in the material is powder；
When the material is equipped with, the outfit unit is additionally operable to add the 40-80% of fuel gross mass in proportioning room
Into the material, second mixed cell is additionally operable to the 20-60% of the fuel gross mass in the last of secondary mixing
Add in 1min into the material.
In such scheme, the component of the material includes：
Iron Ore Powder, its mass percent are 50～80%；
Return mine, its mass percent is 10～30%；
Calcium hydroxide, its mass percent are 0～10%；
Dolomite, its mass percent are 0～10%；
Lime stone, its mass percent are 0～10%；
Fuel, its mass percent are 3～8%.
In such scheme, described device also includes：Second control unit, wherein,
When being sintered to the sintering charge level, second control unit is additionally operable in default sintering region, control
On the sintering charge level that damping device processed is sprayed at the remaining water yield on the sintering machine in vapour form.
In such scheme, first control unit is additionally operable to：
It is 7000～20000Pa to control to sinter negative pressure；
Control to light a fire negative pressure for 3000～15000Pa.
In such scheme, the temperature of the steam is not less than 130 DEG C.
The invention provides a kind of method and device for improving sintering fuel efficiency of combustion, methods described includes：In dispensing
Room is equipped with sintering material used；Mixed once is carried out to the material；Secondary mixing is carried out to the material, after secondary mixing
The mass percent of the water distribution quantity of the material is 6.0-8.0%；The secondary mixed material is laid on sintering machine
Form sintering charge level；The firing temperature for controlling the sintering machine is 1000～1200 DEG C, and the sintering charge level is sintered；Its
In, the calcium hydroxide in the material is powder；When the material is equipped with, by the 40-80% of fuel gross mass in proportioning room
Add into the material, the 20-60% of the fuel gross mass is added to the thing in the last 1min of secondary mixing
In material.Thus, lime is processed into Powdered calcium hydroxide using digester, and in the pelletization of secondary mixing, calcium hydroxide
Will not water-swellable, it is to avoid the adhesion effect of the fuel that destruction is added in secondary mixing, and then avoid fuel and other particles
Separate, moved down by exhausting, taken away；The using effect of fuel is being ensure that finally, combustion rate is being improve.
Description of the drawings
Fig. 1 is the method flow schematic diagram of the raising sintering fuel efficiency of combustion that the embodiment of the present invention one is provided；
Fig. 2 is the overall structure diagram of the damping device that the embodiment of the present invention one is provided；
Fig. 3 is the apparatus structure schematic diagram of the raising sintering fuel efficiency of combustion that the embodiment of the present invention two is provided.
Specific embodiment
In order in sintering process, improve the using effect that fuel point adds, and then fuel economy is improved, the present invention is carried
A kind of method and device for improving sintering fuel efficiency of combustion, methods described has been supplied to include：It is equipped with used by sintering in proportioning room
Material；Mixed once is carried out to the material；Secondary mixing is carried out to the material, the water distribution quantity of the material after secondary mixing
Mass percent be 6.0-8.0%；The secondary mixed material is laid on sintering machine and forms sintering charge level；Control
The firing temperature of the sintering machine is 1000～1200 DEG C, and the sintering charge level is sintered；Wherein, disappearing in the material
Lime is powder；When the material is equipped with, the 40-80% of fuel gross mass is added into the material in proportioning room,
The 20-60% of the fuel gross mass is added into the material in the last 1min of secondary mixing.
Technical scheme is described in further detail below by drawings and the specific embodiments.
Embodiment one
The present embodiment provide it is a kind of improve sintering fuel efficiency of combustion method, as shown in figure 1, methods described include it is following
Step：
Step 110, is equipped with sintering material used in proportioning room.
In this step, before sintering, need to be equipped with the material needed for sintering；Before material is equipped with, will using digester
Lime is configured to calcium hydroxide, powder of the calcium hydroxide for stable components with water.When being equipped with material, by fuel gross mass
40-80% adds into the material in proportioning room.
The component of the material includes：Iron Ore Powder, its mass percent are 50～80%；Preferably 60～70%；Return
Ore deposit, its mass percent are 10～30%, it is therefore preferable to 15～25%；Quick lime, its mass percent are 0～10%, preferably
Ground, is 4～8%；Dolomite, its mass percent are 0～10%, preferably 5～9%；Lime stone, its mass percent are 0
～10%, preferably 4～7%；Fuel, its mass percent are 3～8%；Wherein, the fuel is generally coke powder.
Step 111, carries out mixed once to the material.
In this step, when material is with after getting ready, needs carry out mixed once, and the time of mixed once to the material
For 2～4min, it is therefore preferable to 2.5～3.5min.
Step 112, carries out secondary mixing to the material.
In this step, material is carried out after mixed once, also needs to carry out the material secondary mixing with by material pelletization,
Secondary incorporation time is 2～4min；And the water distribution quantity of the material is the 6.0-8.0% of total water distribution quantity after secondary mixing.Its
In, the 20-60% of the fuel gross mass is added into the material in the last 1min of secondary mixing.
Step 113, the secondary mixed material is laid on sintering machine and forms sintering charge level.
In this step, after material is mixed, the secondary mixed material is uniformly laid on sintering machine, cloth
If thickness is 400～1000mm, it is preferable that for 600～900mm.
Step 114, the firing temperature for controlling the sintering machine are 1000～1200 DEG C, and the sintering charge level is burnt
Knot.
In this step, after the material is uniformly laid on sintering machine, the firing temperature for controlling the sintering machine is
1000～1200 DEG C；Control to light a fire negative pressure for 3000～15000Pa；It is 7000～20000Pa to control to sinter negative pressure.
After firing temperature, igniting negative pressure and sintering negative pressure when sintering machine all sets, in default sintering region,
Using on the sintering charge level that damping device is sprayed at the remaining water yield on the sintering machine in vapour form.Wherein, it is default
Sintering region can include：20～40m at ignition of sintering process position, or 30 at ignition of sintering process position～
70m。
Specifically, referring to Fig. 2, damping device includes：Main pipeline 1, arm 2, injection device 3；Wherein,
The main pipeline 1 is arranged on the side of sintering machine, for providing water source or vapor source to arm 2.Wherein, described
There is a default distance between 4 at pipe 2 and the ignition of sintering process；The distance can not be too small, to prevent newly formed sintering
Height temperate zone is extinguished by water or steam；Can not be excessive, spray effect is not otherwise had, therefore can be by apart from the sintering machine
At arm 2 nearest at igniting and the ignition of sintering process, the distance between 4 are set to 10～15m.Preferably 12m.
One end of each arm 2 is connected with the main pipeline 1 respectively, and the arm 2 includes multiple, is specifically as follows：8～40
Root；And the distance between each arm 2 is 1～8m.
Each injection device 3 is connected with the other end of each arm 2 respectively, and the injection device 3 is located at the burning
The top in ramming material face, for sintering charge level spray water or steam；Wherein, 4～10 sprays are laid with every arm 2 respectively
Emitter part 3；The injection device 3 is specifically as follows shower nozzle or nozzle.Here, in order to ensure spray effect, on adjacent arm 2
Injection device 3 is arranged for staggered form.
Further, in sintering machine running, sintering fabric can shrink, and its height on sintering machine gradually can subtract
Little, in order to ensure spray effect, the injection device 3 remains at 5～30cm with described the distance between the fabric that sinters；It is excellent
Selection of land, is 20cm.Also, during sprinkling, the temperature of the sprinkling steam is not less than 130 DEG C.
In sintering process, the spray water or steam total amount can be 1-6t/h, and sinter before corresponding reduction igniting
Water distribution quantity in compound, to ensure that total Water is certain.
In actual production, after ignition of sintering process 5 minutes or so, the valve controlled on each arm 2 is opened, each injection device
3 start uniformly to be sprayed to sintering fabric, and before the discarded temperature of sintering is raised stop sprinkling.
After the completion of sintering, the temperature of sintering deposit is down to into no more than 200 DEG C using central cooler.Sieve aperture is adopted for 5.0mm
Vibratory sieve the sintering deposit particle after cooling treatment is sieved, screenings is sinter return fine, and oversize is finished product sintering deposit.
And the conventional index of sintering deposit is detected using detecting instrument, sintered discharge gas are detected using flue gas analyzer.Its
In, the conventional index includes：Tumbler index, yield rate, solid burnup and the rate of fuel utilization.
Lime is processed powdered using digester by the method for the raising sintering fuel efficiency of combustion that the present embodiment is provided
Calcium hydroxide, site environment will not be polluted, and in the pelletization of secondary mixing, calcium hydroxide will not water-swellable, it is to avoid broken
The adhesion effect of the bad fuel added in secondary mixing, and then avoid fuel from being separated with other particles, is moved down by exhausting, band
Walk；The using effect of fuel is being ensure that finally, combustion rate is being improve.Also, after ignition of sintering process, using injection device pair
Sintering fabric sprinkling steam, due to H2The appearance of O so that the effect of sintering fuel burning more preferably, improves bed permeability, promotes
The burning completely of fuel.
Embodiment two
Corresponding to embodiment one, the present embodiment also provides a kind of device for improving sintering fuel efficiency of combustion, such as Fig. 3 institutes
Show, described device includes：It is equipped with unit 31, the first mixed cell 32, the second mixed cell 33, laying unit 34, first to control
Unit 35 and the second control unit 36；Wherein,
It is described to be equipped with unit 31 for being equipped with sintering material used in proportioning room；Specifically, before sintering, the outfit
Unit 31 needs to be equipped with the material needed for sintering；Be equipped with material before, it is described outfit unit 31 using digester by lime with
Water is configured to calcium hydroxide, powder of the calcium hydroxide for stable components.When being equipped with material, the outfit unit 31 is total by fuel
The 40-80% of quality adds into the material in proportioning room.
The component of the material includes：Iron Ore Powder, its mass percent are 50～80%；Preferably 60～70%；Return
Ore deposit, its mass percent are 10～30%, it is therefore preferable to 15～25%；Quick lime, its mass percent are 0～10%, preferably
Ground, is 4～8%；Dolomite, its mass percent are 0～10%, preferably 5～9%；Lime stone, its mass percent are 0
～10%, preferably 4～7%；Fuel, its mass percent are 3～8%；Wherein, the fuel is generally coke powder.
After material is equipped with to be terminated, first mixed cell 32 is once mixed for carrying out mixed once to the material
The conjunction time is 2～4min；Preferably 2.5～3.5min.
After first mixed cell 32 carries out mixed once to material, second mixed cell 33 is for described
Material carries out secondary mixing, and secondary incorporation time is 2～4min, the mass percent of the water distribution quantity of the material after secondary mixing
For 6.0-8.0%；Wherein, in the last 1min of secondary mixing, second mixed cell 33 is additionally operable to will be the fuel total
The 20-60% of quality is added into the material.
After material is mixed, the unit 34 of laying is for being laid in sintering machine by the secondary mixed material
It is upper to form sintering charge level；Laying thickness is 400～1000mm；Preferably, it is 600～900mm.
After material has been laid, it is 1000 that first control unit 35 is used to control the firing temperature of the sintering machine
～1200 DEG C, control to light a fire negative pressure for 3000～15000Pa；It is 7000～20000Pa to control to sinter negative pressure, to the sintering feed
Face is sintered.
After firing temperature, igniting negative pressure and sintering negative pressure when sintering machine all sets, the second control unit 36 is used for
The default sintering on sintering charge level that control damping device is sprayed at the remaining water yield on the sintering machine in vapour form
In region, wherein, default sintering region can include：20～40m at ignition of sintering process position, or distance sintering
30～70m at machine ignition location.
Specifically, referring to Fig. 2, damping device includes：Main pipeline 1, arm 2, injection device 3；Wherein,
The main pipeline 1 is arranged on the side of sintering machine, for providing water source or vapor source to arm 2.Wherein, described
There is a default distance between 4 at pipe 2 and the ignition of sintering process；The distance can not be too small, to prevent newly formed sintering
Height temperate zone is extinguished by water or steam；Can not be excessive, spray effect is not otherwise had, therefore can be by apart from the sintering machine
At arm 2 nearest at igniting and the ignition of sintering process, the distance between 4 are set to 10～15m.Preferably 12m.
One end of each arm 2 is connected with the main pipeline 1 respectively, and the arm 2 includes multiple, is specifically as follows：8～40
Root；And the distance between each arm 2 is 1～8m.
Each injection device 3 is connected with the other end of each arm 2 respectively, and the injection device 3 is located at the burning
The top in ramming material face, for sintering charge level sprinkling steam；Wherein, 4～10 injectors are laid with every arm 2 respectively
Part 3；The injection device 3 is specifically as follows shower nozzle or nozzle.Here, in order to ensure spray effect, the injection on adjacent arm 2
Device 3 is arranged for staggered form.
Further, in sintering machine running, sintering fabric can shrink, and its height on sintering machine gradually can subtract
Little, in order to ensure spray effect, the injection device 3 remains at 5～30cm with described the distance between the fabric that sinters；It is excellent
Selection of land, is 20cm.Also, during sprinkling, the temperature of the sprinkling steam is not less than 130 DEG C.
In sintering process, the spray water or steam total amount can be 1-6t/h, and sinter before corresponding reduction igniting
Water distribution quantity in compound, to ensure that total Water is certain.
In actual production, after ignition of sintering process 5 minutes or so, the second control unit control is default to be sintered in region
Each arm 2 on valve open, each injection device 3 starts uniformly to be sprayed to sintering fabric, and in the discarded temperature of sintering
Stop sprinkling before raising.
After the completion of sintering, the temperature of sintering deposit is down to into no more than 200 DEG C using central cooler.Sieve aperture is adopted for 5.0mm
Vibratory sieve the sintering deposit particle after cooling treatment is sieved, screenings is sinter return fine, and oversize is finished product sintering deposit.
And the conventional index of sintering deposit is detected using detecting instrument, sintered discharge gas are detected using flue gas analyzer.
In practical application, the outfit unit 31, the first mixed cell 32, the second mixed cell 33, lay unit 34, the
One control unit 35 and the second control unit 36 can be by (CPU, the Central Processing of the central processing unit in the device
Unit), digital signal processor (DSP, Digtal Signal Processor), programmable logic array (FPGA, Field
Programmable Gate Array), micro-control unit (MCU, Micro Controller Unit) realize.
Lime is processed powdered using digester by the device of the raising sintering fuel efficiency of combustion that the present embodiment is provided
Calcium hydroxide, in the pelletization of secondary mixing, calcium hydroxide will not water-swellable, it is to avoid what destruction was added in secondary mixing
The adhesion effect of fuel, and then avoid fuel from separating with other particles, moved down by exhausting, taken away；Fuel is being ensure that finally
Using effect, improves combustion rate.Also, after ignition of sintering process, using injection device to sintering fabric sprinkling steam, due to
H2The appearance of O so that the effect of sintering fuel burning more preferably, improves bed permeability, promotes the burning completely of fuel.
Embodiment three
In practical application, when the method and embodiment two of the raising sintering fuel efficiency of combustion provided using embodiment one are carried
For raising sintering fuel efficiency of combustion device production sintering deposit when, it is specific as follows：
Before sintering, need to be equipped with the material needed for sintering；Before material is equipped with, lime is matched somebody with somebody with water using digester
Make calcium hydroxide, powder of the calcium hydroxide for stable components.In order to preferably contrast the effect of this programme, the present embodiment
Contrast with conventional sintering process in the method that embodiment one is provided, wherein, the dispensing component used by the present embodiment and conventional method
As shown in table 1：
Table 1
In table 1, in conventional method, the mass percent of lime used is 3.3%, because needing in the present embodiment with an equal basis
The lime of quality adds water and makes calcium hydroxide, and the mass percent of calcium hydroxide is 4.36%, and gross weight therefore also can be more than 100.And
And in proportioning room, the fuel that mass percent is 2.24% only being added, the fuel is coke powder.
When material is with after getting ready, needs carry out mixed once to the material, and the time of mixed once is 3min.
Material is carried out after mixed once, also need to carry out the material secondary mixing with by material pelletization, secondary mixing
Time is 2～4min；And the water distribution quantity of the material is the 6.0-8.0% of total water distribution quantity after secondary mixing.Wherein, by quality
Percentage is that 0.96% fuel is added into the material in the last 1min of secondary mixing.
In this step, after material is mixed, the secondary mixed material is uniformly laid on sintering machine, cloth
If thickness is 880mm.
After the material is uniformly laid on sintering machine, the firing temperature for controlling the sintering machine is 1000～1200
℃；Control to light a fire negative pressure for 3000～15000Pa；It is 7000～20000Pa to control to sinter negative pressure.
After firing temperature, igniting negative pressure and sintering negative pressure when sintering machine all sets, in default sintering region,
Using on the sintering charge level that damping device is sprayed at the remaining water yield on the sintering machine in vapour form.Wherein, it is default
Sintering region can include：20～40m at ignition of sintering process position, or 30 at ignition of sintering process position～
70m。
Specifically, referring to Fig. 2, damping device includes：Main pipeline 1, arm 2, injection device 3；Wherein,
The main pipeline 1 is arranged on the side of sintering machine, for providing water source or vapor source to arm 2.Wherein, described
There is a default distance between 4 at pipe 2 and the ignition of sintering process；The distance can not be too small, to prevent newly formed sintering
Height temperate zone is extinguished by water or steam；Can not be excessive, spray effect is not otherwise had, therefore can be by apart from the sintering machine
At arm 2 nearest at igniting and the ignition of sintering process, the distance between 4 are set to 10～15m.Preferably 12m.
One end of each arm 2 is connected with the main pipeline 1 respectively, and the arm 2 includes multiple, is specifically as follows：8～40
Root；And the distance between each arm 2 is 1～8m.
Each injection device 3 is connected with the other end of each arm 2 respectively, and the injection device 3 is located at the burning
The top in ramming material face, for sintering charge level spray water or steam；Wherein, 4～10 sprays are laid with every arm 2 respectively
Emitter part 3；The injection device 3 is specifically as follows shower nozzle or nozzle.Here, in order to ensure spray effect, on adjacent arm 2
Injection device 3 is arranged for staggered form.
Further, in sintering machine running, sintering fabric can shrink, and its height on sintering machine gradually can subtract
Little, in order to ensure spray effect, the injection device 3 remains at 250cm with described the distance between the fabric that sinters.And
And, during sprinkling, the temperature of the sprinkling steam is 140 DEG C.
In sintering process, the spray water or steam total amount can be 2t/h, and sintering is mixed before corresponding reduction igniting
The water distribution quantity in material is closed, to ensure that total Water is certain.
In actual production, after ignition of sintering process 5 minutes or so, the valve controlled on each arm 2 is opened, each injection device
3 start uniformly to be sprayed to sintering fabric, and before the discarded temperature of sintering is raised stop sprinkling.
After the completion of sintering, the temperature of sintering deposit is down to into no more than 200 DEG C using central cooler.Sieve aperture is adopted for 5.0mm
Vibratory sieve the sintering deposit particle after cooling treatment is sieved, screenings is sinter return fine, and oversize is finished product sintering deposit.
And the conventional index of sintering deposit is detected using detecting instrument, sintered discharge gas are detected using flue gas analyzer.Its
In, the conventional index includes：Hang down and burn speed, tumbler index, the rate of return mine, yield rate (ore deposit ball yield rate of the particle diameter for 5-10mm
It is more low better), solid burnup and the rate of fuel utilization.
Wherein, the present embodiment and conventional method sinter quality index are as shown in table 2：
Table 2
As can be seen from Table 2, the rate of fuel utilization in the present embodiment is 1.06, and the usage factor in conventional method is
1.00, therefore, the utilization ratio of fuel is improve in the present embodiment.
The above, only presently preferred embodiments of the present invention is not intended to limit protection scope of the present invention, it is all
Any modification, equivalent and improvement for being made within the spirit and principles in the present invention etc., should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. it is a kind of improve sintering fuel efficiency of combustion method, it is characterised in that methods described includes：
Sintering material used is equipped with proportioning room；
Mixed once is carried out to the material；
Secondary mixing is carried out to the material, the mass percent of the water distribution quantity of the material is 6.0-8.0% after secondary mixing；
The secondary mixed material is laid on sintering machine and forms sintering charge level；
The firing temperature for controlling the sintering machine is 1000～1200 DEG C, and the sintering charge level is sintered；Wherein, the thing
Calcium hydroxide in material is powder；When the material is equipped with, the 40-80% of fuel gross mass is added to described in proportioning room
In material, the 20-60% of the fuel gross mass is added into the material in the last 1min of secondary mixing.
2. the method for claim 1, it is characterised in that the component of the material includes：
Iron Ore Powder, its mass percent are 50～80%；
Return mine, its mass percent is 10～30%；
Calcium hydroxide, its mass percent are 0～10%；
Dolomite, its mass percent are 0～10%；
Lime stone, its mass percent are 0～10%；
Fuel, its mass percent are 3～8%.
3. the method for claim 1, it is characterised in that the firing temperature for controlling the sintering machine is 1000～1200 DEG C
Afterwards, methods described also includes：
It is 7000～20000Pa to control to sinter negative pressure；
Control to light a fire negative pressure for 3000～15000Pa.
4. the method for claim 1, it is characterised in that when being sintered to the sintering charge level, methods described is also wrapped
Include：In default sintering region, the remaining water yield is sprayed on the sintering machine in vapour form using damping device
On sintering charge level.
5. method as claimed in claim 4, it is characterised in that the temperature of the steam is not less than 130 DEG C.
6. it is a kind of improve sintering fuel efficiency of combustion device, it is characterised in that described device includes：
Unit is equipped with, the outfit unit sinters material used for being equipped with proportioning room；
First mixed cell, first mixed cell is for carrying out mixed once to the material；
Second mixed cell, second mixed cell for secondary mixing is carried out to the material, the thing after secondary mixing
The mass percent of the water distribution quantity of material is 6.0-8.0%；
Unit is laid, the laying unit forms sintering feed for the secondary mixed material is laid on sintering machine
Face；
First control unit, it is 1000～1200 DEG C that first control unit is used to control the firing temperature of the sintering machine,
The sintering charge level is sintered；Wherein, the calcium hydroxide in the material is powder；
When the material is equipped with, the outfit unit is additionally operable to add to institute the 40-80% of fuel gross mass in proportioning room
State in material, second mixed cell be additionally operable to by the 20-60% of the fuel gross mass secondary mixing last 1min
Inside add into the material.
7. device as claimed in claim 6, it is characterised in that the component of the material includes：
Iron Ore Powder, its mass percent are 50～80%；
Return mine, its mass percent is 10～30%；
Calcium hydroxide, its mass percent are 0～10%；
Dolomite, its mass percent are 0～10%；
Lime stone, its mass percent are 0～10%；
Fuel, its mass percent are 3～8%.
8. device as claimed in claim 6, it is characterised in that described device also includes：Second control unit, wherein,
When being sintered to the sintering charge level, second control unit is additionally operable in default sintering region, and control adds
On the sintering charge level that wet device is sprayed at the remaining water yield on the sintering machine in vapour form.
9. device as claimed in claim 6, it is characterised in that first control unit is additionally operable to：
It is 7000～20000Pa to control to sinter negative pressure；
Control to light a fire negative pressure for 3000～15000Pa.
10. device as claimed in claim 9, it is characterised in that the temperature of the steam is not less than 130 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610982185.XA CN106521145A (en) | 2016-11-08 | 2016-11-08 | Method and device for improving burning efficiency of sintering fuel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610982185.XA CN106521145A (en) | 2016-11-08 | 2016-11-08 | Method and device for improving burning efficiency of sintering fuel |
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| CN106521145A true CN106521145A (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610982185.XA Pending CN106521145A (en) | 2016-11-08 | 2016-11-08 | Method and device for improving burning efficiency of sintering fuel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111455167A (en) * | 2020-05-23 | 2020-07-28 | 山东泰山钢铁集团有限公司 | Sintering method for promoting combustion by water spraying for sintering machine |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant before: Capital Iron & Steel General Company |
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