CN107502736A - A kind of sinter mixture and its sintering method of Baima iron ore concentrate - Google Patents
A kind of sinter mixture and its sintering method of Baima iron ore concentrate Download PDFInfo
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- CN107502736A CN107502736A CN201710722200.1A CN201710722200A CN107502736A CN 107502736 A CN107502736 A CN 107502736A CN 201710722200 A CN201710722200 A CN 201710722200A CN 107502736 A CN107502736 A CN 107502736A
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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
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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
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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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
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
- C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
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Abstract
The invention discloses a kind of sinter mixture and its sintering method of Baima iron ore concentrate, it is related to technical field of mineral processing.The sinter mixture of Baima iron ore concentrate includes Baima iron ore concentrate, flux, fuel, return mine miberal powder and recycle stock, and Baima iron ore concentrate, flux, fuel, the mass ratio of return mine miberal powder and recycle stock are 80:5‑11:4‑6:20‑40：0‑8.Sinter basicity can be effectively improved using the sinter mixture of aforementioned proportion, and control SiO2And TiO2Content, the iron ore concentrate sintered feasibility in full Baima and the stability of sinter quality are ensure that, stopped using expensive import resources and domestic high powder, reduce sintering ton ore deposit cost.Present invention also offers a kind of sintering method of Baima iron ore concentrate, and it uses the sinter mixture of above-mentioned Baima iron ore concentrate to be sintered, expands the utilization of resources of dialogue malleable iron concentrate, and running cost is low.
Description
Technical field
The present invention relates to a kind of technical field of mineral processing, and the sinter mixture of more particularly to a kind of Baima iron ore concentrate and
Its sintering method
Background technology
Baima iron ore concentrate belongs to more high-quality v-ti magnetite concentrate, and its TFe content is higher (54~57%), TiO2Content
Higher (9~10.5%), SiO2Content is relatively low (3~5%), but due to the mineral structure of ferrotitanium symbiosis, cause its hydrophily and
Balling-up is poor, adds sintering difficulty, while the crisp perovskite of generating property in sintering process, also reduces sintering deposit
Intensity, it is degrading sinter quality.And Panxi Diqu is based on vanadium titano-magnetite, other concentrate reserves are low, are transported into from other places
Then cost is higher.
The content of the invention
It is an object of the invention to provide a kind of sinter mixture of Baima iron ore concentrate, it is intended to improves full Baima iron ore concentrate and burns
The problem of difficulty is big is tied, effectively reduces sintering cost.
Another object of the present invention is to provide a kind of sintering method of full Baima iron ore concentrate, it can effectively lift sintering
Ore deposit basicity, and control SiO2And TiO2Content, it ensure that the iron ore concentrate sintered feasibility in full Baima and the stabilization of sinter quality
Property.
The present invention is solved its technical problem and realized using following technical scheme.
The present invention proposes a kind of sinter mixture of Baima iron ore concentrate, and it comprises the following steps：
A kind of sinter mixture of Baima iron ore concentrate, including Baima iron ore concentrate, flux, fuel, return mine miberal powder and recycle
Material, Baima iron ore concentrate, flux, fuel, the mass ratio of return mine miberal powder and recycle stock are 80:5-11:4-6:20-40:0-8.
The present invention also proposes a kind of sintering method of full Baima iron ore concentrate, comprises the following steps：
After sinter mixture is mixed with water, then cloth and sintering are carried out successively；Wherein, sinter mixture is above-mentioned Baima
The sinter mixture of iron ore concentrate.
The embodiment of the present invention provides a kind of beneficial effect of the sinter mixture of Baima iron ore concentrate：It is provided by the invention white
In the sinter mixture of malleable iron concentrate, sintering ferrous material all using Baima iron ore concentrate, then with scale bar provided by the invention
With flux, fuel, return mine miberal powder and recycle stock composition sinter mixture under part, sinter basicity is effectively increased, and control
SiO2And TiO2Content, it ensure that the iron ore concentrate sintered feasibility in full Baima and the stability of sinter quality.Matched somebody with somebody using the present invention
Sinter mixture than under is sintered, and has stopped using expensive import resources and domestic high powder, reduces sintering ton ore deposit
Cost, huge economic benefit is brought to enterprise.Present invention also offers a kind of sintering method of Baima iron ore concentrate, it is used
The sinter mixture of above-mentioned Baima iron ore concentrate is sintered, and expands the utilization of resources of dialogue malleable iron concentrate, and running cost is low.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, it is the conventional production that can be obtained by commercially available purchase
Product.
The sinter mixture to Baima iron ore concentrate provided in an embodiment of the present invention and its sintering method are carried out specifically below
It is bright.
A kind of sinter mixture of Baima iron ore concentrate provided in an embodiment of the present invention, including Baima iron ore concentrate, flux, combustion
Expect, return mine miberal powder and recycle stock, Baima iron ore concentrate, flux, fuel, the mass ratio of return mine miberal powder and recycle stock are 80:5-
11:4-6:20-40:0-8。
Preferably, Baima iron ore concentrate, flux, fuel, the mass ratio of return mine miberal powder and recycle stock are 80:6-10:4.5-
5.5:20-40:2-6.It is highly preferred that Baima iron ore concentrate, flux, fuel, the mass ratio of return mine miberal powder and recycle stock are 80:6-
10:4.5-5.5:25-35:2-4。
It should be noted that sintering ferrous material in the embodiment of the present invention all using Baima iron ore concentrate, coordinate above-mentioned ratio
Flux, fuel, return mine miberal powder and the recycle stock of example, each raw material is mixed, can improve sintering deposit in this proportion
Basicity, and effectively control SiO2And TiO2Content, it may finally reach using full Baima iron ore concentrate as the feasible of sintering ferrous material
Property, and the sintering deposit of steady quality is obtained, Ti content is in 9% or so (sintering deposit that existing process process obtains in sintering deposit
Ti content is probably in 6.5-7.5%).What is more important, using the sinter mixture provided in the embodiment of the present invention, stop making
With expensive import resources and domestic high powder, the country is also effectively utilized while dramatically reducing sintering cost
The more Baima iron ore concentrate of content.
Specifically, flux, fuel, return mine miberal powder and recycle stock can be determined according to concrete technology situation, can be with
For raw materials for sintering commonly used in the art, recycle stock is such as determined according to secondary resource situation in factory.
According to some embodiments, flux is selected from active ash, lime stone, quick lime, logical river are grey and dolomite at least
It is a kind of；Fuel is selected from least one of coke powder or anthracite；Recycle stock be selected from gas ash, dedusting ash, slag, head ash and
At least one of converter mud.
Flux, fuel and recycle stock, it is determined that according to circumstances to be adjusted after specific species in the range of aforementioned proportion
Whole, it is that fuel is more relative to the dosage outline of use coke powder such as to use anthracite.
Preferably, flux includes activity ash, lime stone；Recycle stock includes gas ash, dedusting ash.Flux is using activity ash
The basicity of sinter mixture can be effectively adjusted with lime stone, so as to ensure using full Baima iron ore concentrate as sintering ferrous material can
Row, and obtain the sintering deposit of steady quality.The iron-holder of gas ash and dedusting ash is more, the quality for lifting sintered products
There is certain influence.FeO content is controlled by controlling the dosage of fuel, FeO content can be controlled by aforementioned proportion
In 7%-10%.
Present invention also offers a kind of sintering method of full Baima iron ore concentrate, comprise the following steps：
After sinter mixture is mixed with water, then cloth and sintering are carried out successively；Wherein, sinter mixture is above-mentioned Baima
The sinter mixture of iron ore concentrate.
It should be noted that the sinter mixture of Baima iron ore concentrate provided in an embodiment of the present invention is used as raw materials for sintering,
Cloth and sintering are carried out by the way of conventional can obtain the sintering deposit of steady quality.Due to the TiO in sinter mixture2Contain
Amount is higher, and TiO2Fusing point it is higher, therefore need and compared with juicy mix, to ensure the sintering velocity of product.Preferably, sinter
Compound and water be mixed to get the total material of sintering during, the dosage of water is 8-8.5 with the mass ratio for sintering total material:
100, incorporation time 8-10min.
Further, the process of cloth and sintering is that bed material is first laid in sintered cup, re-lays sinter mixture and water
The mixture of composition, down draft sintering of then lighting a fire again.Cloth and sintering process are carried out in sintered cup, first in sintered cup
Finished product ore deposit is laid on bottom, is then sintered the laying of the mixture of compound and water composition again, cloth is completed to carry out again
Igniting sintering.
Specifically, the bed of material gross thickness during cloth is 650-700mm, and bed material thickness is 15-25mm, and bed material granularity is
10-16mm.During cloth, thickness of feed layer is too high to slow down sintering rate, and easily produces flame-out phenomenon, and the bed of material is thick
Spend low, the yield of technique can be prevented not meet the requirement of economy from meeting to require.It can be reduced using deep-bed sintering
Vertical sintering speed, extend high temperature hold time, ensure mineral sufficient crystallising, there is weight to improving sinter strength and yield rate
Act on, compensate for the iron ore concentrate sintered deficiency in full Baima.
According to some embodiments, the firing temperature in sintering process is 1000-1200 DEG C, duration of ignition 2-3.5min,
Igniter pressure is 5-6KPa.Preferably, firing temperature is 1100-1150 DEG C, duration of ignition 2.5-3min, and igniter pressure is
5.5-6.0KPa.Firing temperature, which exceedes above range, easily causes compound to burn to the state of superfusion, influences to sinter gas permeability.Point
Pressure ignition mainly influences sintering rate, and it is too fast and influence sintering deposit product that igniter pressure more than above range easily produces sintering rate
The phenomenon of matter.Igniter pressure and firing temperature control can be ensured into sintering while sintering quality is ensured within the above range
The yield of product.
Further, the vertical sintering speed in sintering process is 10-25mm/min, preferably 15-20mm/min.Using
The suction pressure of sintering process and the mode of exhausting flow is controlled to control sintering rate.Coordinate thickness of feed layer, this ensure that burning
Atmosphere hyperoxia position is tied, while suppresses vanadium haplotypite and hardness height, the perovskite of intensity difference is generated in sintering process.
According to some embodiments, in sintering process, suction pressure 11-13KPa, exhausting flow is 5-15m3/min。
Suction pressure and the control of exhausting flow can effectively be adjusted to the vertical sintering speed in sintering process within the above range, with more
Add suitable sintering rate to be sintered and obtain the sintering finished of high-quality.
Preferably, in sinter mixture, the granularity of fuel is less than 5mm, and the granularity of flux is less than 3mm, miberal powder of returning mine
Granularity is less than 5mm.The granularity of each component is controlled before dispensing, is advantageous to each component and is well mixed and lifts sintering
The uniformity, it is also to ensure the quality of sintered products.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of sinter mixture of Baima iron ore concentrate, and it includes Baima iron ore concentrate, quick lime, anthracite
With miberal powder of returning mine, wherein, Baima iron ore concentrate, quick lime, mass ratio=80 of anthracite and miberal powder of returning mine:5:4:20.
The present embodiment also provides a kind of sintering method of Baima iron ore concentrate, and it comprises the following steps：
Sinter mixture is mixed with water, wherein, sinter mixture includes Baima iron ore concentrate, quick lime, anthracite and returned
Ore deposit miberal powder, and Baima iron ore concentrate, quick lime, mass ratio=80 of anthracite and miberal powder of returning mine:5:4:20；Sinter mixture and water
Be mixed to get the total material of sintering during, the dosage of water is 8 with the mass ratio for sintering total material:100, incorporation time is
8min。
First laying depth 15mm, granularity 10mm bed material in sintered cup, re-lay sinter mixture and mixed with what water formed
Compound forms the thick sinter beds of 650mm, down draft sintering of then lighting a fire again.Wherein, firing temperature is 1000 DEG C, and the duration of ignition is
2min, igniter pressure 5KPa；Suction pressure is 11KPa, and exhausting flow is 5m3/min。
Embodiment 2
The present embodiment provides a kind of sinter mixture of Baima iron ore concentrate, it include Baima iron ore concentrate, activity ash, coke powder,
Return mine miberal powder and head ash, wherein, Baima iron ore concentrate, active ash, coke powder, return mine miberal powder and grey mass ratio=80 of head:11:
6:40:8。
The present embodiment also provides a kind of sintering method of Baima iron ore concentrate, and it comprises the following steps：
Sinter mixture is mixed with water, wherein, sinter mixture includes Baima iron ore concentrate, active ash, coke powder, ore deposit of returning mine
Powder and head ash, and Baima iron ore concentrate, active ash, coke powder, mass ratio=80 of return mine miberal powder and head ash:11:6:40:8；Burn
Knot compound and water be mixed to get the total material of sintering during, the dosage of water is 8.5 with the mass ratio for sintering total material:
100, incorporation time 10min.
First laying depth 25mm, granularity 16mm bed material in sintered cup, re-lay sinter mixture and mixed with what water formed
Compound forms the thick sinter beds of 700mm, down draft sintering of then lighting a fire again.Wherein, firing temperature is 1200 DEG C, and the duration of ignition is
3.5min, igniter pressure 6KPa；Suction pressure is 13KPa, and exhausting flow is 15m3/min。
Embodiment 3
The present embodiment provides a kind of sinter mixture of Baima iron ore concentrate, it include Baima iron ore concentrate, dolomite, coke powder,
Return mine miberal powder and slag, wherein, Baima iron ore concentrate, dolomite, coke powder, mass ratio=80 of return mine miberal powder and slag:6:4.5:
25:2。
The present embodiment also provides a kind of sintering method of Baima iron ore concentrate, and it comprises the following steps：
Sinter mixture is mixed with water, wherein, sinter mixture includes Baima iron ore concentrate, dolomite, coke powder, ore deposit of returning mine
Powder and slag, and Baima iron ore concentrate, dolomite, coke powder, mass ratio=80 of return mine miberal powder and slag:6:4.5:25:2；Sintering
Compound and water be mixed to get the total material of sintering during, the dosage of water is 8 with the mass ratio for sintering total material:100, mix
The conjunction time is 10min.
First laying depth 25mm, granularity 16mm bed material in sintered cup, re-lay sinter mixture and mixed with what water formed
Compound forms the thick sinter beds of 700mm, down draft sintering of then lighting a fire again.Wherein, firing temperature is 1100 DEG C, and the duration of ignition is
2.5min, igniter pressure 5.5KPa；Suction pressure is 13KPa, and exhausting flow is 15m3/min。
Embodiment 4
The present embodiment provides a kind of sinter mixture of Baima iron ore concentrate, and it includes Baima iron ore concentrate, activity ash, lime
Stone, coke powder, miberal powder of returning mine, gas ash, dedusting ash, wherein, Baima iron ore concentrate, active ash, lime stone, coke powder, miberal powder of returning mine, watt
This ash, mass ratio=80 of dedusting ash:5:5:5.5:35:2:2.
The present embodiment also provides a kind of sintering method of Baima iron ore concentrate, and it comprises the following steps：
Baima iron ore concentrate, active ash, lime stone, coke powder, miberal powder of returning mine, gas ash, dedusting ash are crushed, wherein, activity
The granularity of ash and lime stone is less than 5mm, and the granularity of coke powder is less than 5mm, and the granularity for miberal powder of returning mine is less than 5mm.
Sinter mixture is mixed with water, wherein, Baima iron ore concentrate in sinter mixture, active ash, lime stone, coke powder,
Return mine miberal powder, gas ash, mass ratio=80 of dedusting ash:5:5:5.5:35:2:2；Sinter mixture and water are mixed to get burning
During tying total material, the dosage of water is 8.5 with the mass ratio for sintering total material:100, incorporation time 10min.
First laying depth 25mm, granularity 16mm bed material in sintered cup, re-lay sinter mixture and mixed with what water formed
Compound forms the thick sinter beds of 700mm, down draft sintering of then lighting a fire again.Wherein, firing temperature is 1150 DEG C, and the duration of ignition is
3min, igniter pressure 5.5KPa；Suction pressure is 13KPa, and exhausting flow is 15m3/min。
Embodiment 5
The present embodiment provides a kind of sinter mixture of Baima iron ore concentrate, and it includes Baima iron ore concentrate, activity ash, lime
Stone, coke powder, miberal powder of returning mine, gas ash, dedusting ash, wherein, Baima iron ore concentrate, active ash, lime stone, coke powder, miberal powder of returning mine, watt
This ash, mass ratio=80 of dedusting ash:4:5:5:30:4:2.
The present embodiment also provides a kind of sintering method of Baima iron ore concentrate, and it comprises the following steps：
Baima iron ore concentrate, active ash, lime stone, coke powder, miberal powder of returning mine, gas ash, dedusting ash are crushed, wherein, activity
The granularity of ash and lime stone is less than 5mm, and the granularity of coke powder is less than 5mm, and the granularity for miberal powder of returning mine is less than 5mm.
Sinter mixture is mixed with water, wherein, Baima iron ore concentrate in sinter mixture, active ash, lime stone, coke powder,
Return mine miberal powder, gas ash, mass ratio=80 of dedusting ash:4:5:5:30:4:2；Sinter mixture and water are mixed to get sintering
During total material, the dosage of water is 8.3 with the mass ratio for sintering total material:100, incorporation time 10min.
First laying depth 25mm, granularity 16mm bed material in sintered cup, re-lay sinter mixture and mixed with what water formed
Compound forms the thick sinter beds of 700mm, down draft sintering of then lighting a fire again.Wherein, firing temperature is 1150 DEG C, and the duration of ignition is
3min, igniter pressure 5.5KPa；Suction pressure is 13KPa, and exhausting flow is 15m3/min。
Embodiment 6
The proportioning of each component in sinter mixture in embodiment 5 is changed to：Baima iron ore concentrate, active ash, lime stone, Jiao
Powder, miberal powder of returning mine, gas ash, mass ratio=80 of dedusting ash:4.5:5:5:30:4:1.5.
Embodiment 7
The proportioning of each component in sinter mixture in embodiment 5 is changed to：Baima iron ore concentrate, active ash, lime stone, Jiao
Powder, miberal powder of returning mine, gas ash, mass ratio=80 of dedusting ash:5:5:5:30:4:1.
Embodiment 8
The proportioning of each component in sinter mixture in embodiment 5 is changed to：Baima iron ore concentrate, active ash, lime stone, Jiao
Powder, miberal powder of returning mine, gas ash, mass ratio=80 of dedusting ash:5.5:5:5:30:4:0.5.
It should be noted that the physical and chemical indexes of each component in above-described embodiment are as follows：
Baima iron ore concentrate ω (TFe)>56%, ω (SiO2)<3.5%, ω (FeO)>25%, ω (TiO2)>10%, ω
(granularity is less than 0.074mm)>65%；
Gas ash ω (TFe) 43-45%, ω (SiO2) 5-8%, ω (Al2O3)<3.5%, ω (TiO2)<0.5%；
Dedusting ash ω (TFe) 58-60%, ω (SiO2) 6-8%, ω (Al2O3)<2%, ω (CaO)>3%, ω (TiO2)<
3%；
Grey ω (CaO) 85-90% of activity；
Lime stone ω (main component CaO) 50-53%；
Coke powder ash content 12-15%；
Return mine ω (TFe) 51.5%, ω (SiO2) 4.0-4.5%, ω (CaO) 7.0-9.0%.
In addition, the quicklime slaking water ratio in embodiment 5-8 is 2:1, the dosage and the quality of the total material of sintering of water
Than for 8.3 ± 0.2%:100.
Test example
The granularity of sintered products in measure embodiment 5-8, sintered ore rotary drum strength, sintering finished rate, sintering deposit TFe product
Position, SiO2Content, TiO2Content and sintering basicity CaO/SiO2.Specific assay method is as follows：
When the EGT of sintered cup lower end air draft pipe, which rises to highest, drops to 20 DEG C again, sintering process terminates.
Sinter cake is poured out and slightly broken (the spacing 50mm of disintegrating machine), then carries out 3 times and falls processing (height of fall 2m) afterwards by 40-
25、25-16、16-10、10-5、<5mm is sieved, and is calculated>5mm proportions, detection drum strength is carried out by Standard,
And conventionally determine other indexs.Measurement result is as shown in table 1.
The measurement result of sintered products in the embodiment 5-8 of table 1
As can be seen from Table 1, implement high-basicity sintering in the embodiment of the present invention, improve the grey ratio of activity, full Baima iron essence
The sintering effect of ore deposit gradually improves, sinter mixture granularity>3mm ratio reaches more than 44%, at the same the basicity of sintering deposit and
TFe grades are higher, and sintered mixture ventilation is also significantly improved, and improve the generation of compound calcium ferrite, sintering deposit
Comprehensive drum strength (ISO) and yield rate increase.Therefore, the sintering of Baima iron ore concentrate provided in an embodiment of the present invention mixes
The iron ore concentrate sintered feasibility in full Baima and the stability of sinter quality can be ensured by closing material.
In summary, the sinter mixture of a kind of Baima iron ore concentrate provided by the invention, it, which sinters ferrous material, all makes
With Baima iron ore concentrate, coordinate a certain proportion of flux, fuel, return mine miberal powder and recycle stock, by each original in this proportion
Material mixing, can improve the basicity of sintering deposit, and effectively control SiO2And TiO2Content, it may finally reach with full Baima iron essence
Ore deposit is the feasibility of sintering ferrous material, while can obtain the sintering deposit of steady quality, stopped using it is expensive enter
Mouth ore deposit and domestic high powder, dramatically reduce sintering cost.Present invention also offers a kind of sintering of full Baima iron ore concentrate
Method, it is sintered using above-mentioned sinter mixture, and the ferrous material in raw material is all using Baima iron ore concentrate, high degree
On reduce production cost.
Embodiments described above is part of the embodiment of the present invention, rather than whole embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of sinter mixture of Baima iron ore concentrate, it is characterised in that including Baima iron ore concentrate, flux, fuel, miberal powder of returning mine
And recycle stock, Baima iron ore concentrate, the flux, the fuel, the quality of return mine miberal powder and the recycle stock
Than for 80:5-11:4-6:20-40：0-8.
2. the sinter mixture of Baima iron ore concentrate according to claim 1, it is characterised in that Baima iron ore concentrate, institute
It is 80 to state flux, the fuel, the mass ratio of return mine miberal powder and the recycle stock:6-10:4.5-5.5:20-40:2-
6；
Preferably, Baima iron ore concentrate, the flux, the fuel, the quality of return mine miberal powder and the recycle stock
Than for 80:6-10:4.5-5.5:25-35:2-4.
3. according to the sinter mixture of Baima iron ore concentrate described in claim 1 or 2, it is characterised in that the flux is selected from
At least one of active ash, lime stone, quick lime, logical river ash and dolomite；The fuel is in coke powder or anthracite
It is at least one；The recycle stock is selected from least one of gas ash, dedusting ash, slag, head ash and converter mud；
Preferably, the flux includes activity ash, lime stone；The recycle stock includes gas ash, dedusting ash.
4. a kind of sintering method of full Baima iron ore concentrate, it is characterised in that comprise the following steps：
After sinter mixture is mixed with water, then cloth and sintering are carried out successively；
The sinter mixture is the sinter mixture of Baima iron ore concentrate any one of claim 1-3.
5. the sintering method of full Baima iron ore concentrate according to claim 4, it is characterised in that the mistake of the cloth and sintering
Journey is that bed material is first laid in sintered cup, re-lays the mixture of the sinter mixture and water composition, exhausting of then lighting a fire again
Sintering.
6. the sintering method of full Baima iron ore concentrate according to claim 5, it is characterised in that the material during the cloth
Layer gross thickness is 650-700mm, and bed material thickness is 15-25mm, and the bed material granularity is 10-16mm.
7. the sintering method of full Baima iron ore concentrate according to claim 5, it is characterised in that the point in the sintering process
Fiery temperature is 1000-1200 DEG C, duration of ignition 2-3.5min, igniter pressure 5-6KPa；
Preferably, the firing temperature is 1100-1150 DEG C, duration of ignition 2.5-3min, igniter pressure 5.5-6.0KPa.
8. the sintering method of full Baima iron ore concentrate according to claim 5, it is characterised in that
Vertical sintering speed in the sintering process is 10-25mm/min, preferably 15-20mm/min；
In the sintering process, suction pressure 11-13KPa, exhausting flow is 5-15m3/min。
9. the sintering method of full Baima iron ore concentrate according to claim 4, it is characterised in that the sinter mixture and institute
State water be mixed to get the total material of sintering during, the dosage of the water and the mass ratio of the total material of sintering are 8-8.5:
100, incorporation time 8-10min.
10. the sintering method of full Baima iron ore concentrate according to claim 4, it is characterised in that in the sinter mixture
In, the granularity of the fuel is less than 5mm, and the granularity of the flux is less than 3mm, and the granularity of the miberal powder of returning mine is less than 5mm.
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