CN106337117A - Ultra-thick material layer sintering method of double-basicity composite sintered ore - Google Patents
Ultra-thick material layer sintering method of double-basicity composite sintered ore Download PDFInfo
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- CN106337117A CN106337117A CN201610815322.0A CN201610815322A CN106337117A CN 106337117 A CN106337117 A CN 106337117A CN 201610815322 A CN201610815322 A CN 201610815322A CN 106337117 A CN106337117 A CN 106337117A
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- 238000005245 sintering Methods 0.000 title claims abstract description 96
- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 52
- 239000004744 fabric Substances 0.000 claims abstract description 23
- 238000012216 screening Methods 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 56
- 229910052742 iron Inorganic materials 0.000 claims description 28
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 18
- 239000000446 fuel Substances 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 9
- 235000012255 calcium oxide Nutrition 0.000 claims description 9
- 235000019738 Limestone Nutrition 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 8
- 239000006028 limestone Substances 0.000 claims description 8
- 238000005453 pelletization Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000012141 concentrate Substances 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 239000008188 pellet Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009770 conventional sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010010904 Convulsion Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for sintering an ultra-thick material layer of a double-basicity composite sintered ore, which comprises the steps of distributing materials twice, igniting twice, and enabling upper-layer sintering mixture and lower-layer sintering mixture to be different; firstly, adding the mixture A to a sintering trolley, wherein the thickness of the mixture A is 600-800 mm, igniting by a first igniter, exhausting and sintering, and the alkalinity of the mixture A is 1.8-2.4; the sintering pallet being moved to a distance from the first set of ignition systems corresponding to the total length of the sintering machine
Description
Technical field
The invention belongs to ironmaking production technical field, it is related to SINTERING PRODUCTION technology, be combined particularly to a kind of pair of basicity
The super thick bed of material sintering method of sintering deposit.
Background technology
Because pellet production cost is higher, lump ore metallurgical performance is poor, and Iron and Steel Enterprises in China is mainly sintered by increase
The method of mining amount is reducing ironmaking cost.Increase sintering deposit consumption must solve two problems: 1) improve the yield of sintering deposit；
2) maintain the iron-smelting raw material alkalinity balance entering blast furnace.
Under conditions of effective sintering area is fixing, the main method increasing Sintering Yield is to improve sintering feed thickness
Degree, but it is as the thickening of sinter bed, increased by the gas-flow resistance of the bed of material, sintering velocity slows down, and this not only adds wind
The power consumption of machine, and lead to productivity of sinter to decline, especially to the enterprise being main raw materials for sintering with iron ore concentrate；The opposing party
After high-temperature ignition, charge level melts rapidly encrustation to face sinter mixture, have impact on the air capacity of suction from top to bottom, empty
Tolerance reduces makes the slack-off sintering process that directly affects of vertical sintering speed carry out.
The high basicity sinter of blast furnace raw material structure generally 60%～70% at present, with addition of 20%～30% acid ball
Nodulizing and 5%～10% lump ore.In order to maintain the alkalinity balance entering blast furnace ironmaking raw material, increase sintering deposit consumption and just must
The basicity of sintering deposit need to be reduced, reducing sinter basicity means that composition is close to self-fluxed sinter, self-fluxed sinter
Metallurgical performance extreme difference, sinter basicity is reduced to 1.9 about and has almost arrived the limit, reduction further can have a strong impact on sintering
The quality of ore deposit, the basicity therefore reducing merely sintering deposit is difficult to increase substantially the use ratio of sintering deposit.
Double alkalinity sintered ores are the sintering deposits in blast furnace ironmaking produces using two kinds of different basicity.Wherein high alkalinity part
Effect constant, low alkalinity part then replaces pellet and natural lump ore as acid burden material, and the use of double alkalinity sintered ores is
Improve a trial of the current burden structure of China.With the continuous development of sintering technology, particularly Mini Pelletized Sinter Process
Exploitation, produces to acid sinter ore and application provides condition, the quality of deep bed sintering bead acid sinter ore is particularly metallurgical
Can be close to the quality being even more than acidic pellet ore.But conventional sintering technique only carries out a cloth, once lights a fire, high
Alkalinity sintered ore and acid sinter ore can only produce on different sintering machines it is impossible to once sintered produce two kinds of different basicity
Sintering deposit, is unfavorable for the popularization and application of double alkalinity sintered ore production new techniques.
For improving sintering economic and technical norms, technical staff did a lot of super thick bed of materials (bed of material height is more than 800 millimeters) and burnt
Knot method explore it is intended to further excavate deep-bed sintering potentiality, using increase ignition intensity, high negative pressure Wind Volume direct current
Formula convulsion operation is it is intended to improve thickness of feed layer in this way, but is to increase ignition intensity and often makes deep bed sintering surface melting,
Space blocking between bed of material granule, whole materialbeds comminution increases it is necessary to improve negative pressure and the air quantity of blower fan, causes distinguished and admirable office
Portion's short circuit, the bed of material does not reach Even Sintering, leads to increasing considerably of energy consumption, does not obtain prominent in terms of super deep-bed sintering
Broken.
Conventional sintering technique has no longer adapted to new production situation, is unfavorable for reducing sintering cost and blast furnace ironmaking cost,
Need to study new SINTERING PRODUCTION technique.
Content of the invention
The invention aims to proposing a kind of once sintered deep-bed sintering method producing two kinds of alkalinity sintered ores,
Produce a kind of suitable sintering deposit of comprehensive basicity；Increase the yield of sintering deposit, reduce the usage amount of pellet, reduce ironmaking cost.
A kind of super thick bed of material sintering method of pair of basicity composite sinter it is characterised in that: twice cloth, light a fire twice into
Row sintering, and the upper and lower sinter mixture is different, specifically comprises the following steps that
1) sinter mixture a is added to pallet in sintering device handpiece cloth first, and its fabric thickness is 600mm～800mm；
Light a fire for the first time down draft sintering through the first lighter, firing temperature is 900～1000 DEG C, suction pressure be 8000pa～
15000pa；
Described sinter mixture a, is obtained by iron-bearing material, fuel, limestone and quick lime blended machine mixed pelletization, its
The mass fraction of middle iron-bearing material be 70%～85%, fuel mass fraction be 3%～4%, Lime Quality fraction be 4%～
6%, it is 1.8～2.4 that adjustment limestone content makes the basicity of compound a；The granularmetric composition of sinter mixture a is little more than 3mm
In the mass percent 40%～45% equal to 5mm, the mass percent being less than or equal to 8mm more than 5mm is 30%～35%；
2) when the distance that pallet runs to away from sintering machine first set ignition system is sintering machine total length
When, add sinter mixture b in the agglomerate surface cloth being sintered, the thickness of its cloth is 400mm～600mm, through the
Two lighters are lighted a fire down draft sintering for the second time, and firing temperature is 1050～1150 DEG C, and suction pressure is 12000pa～20000pa；
Described sinter mixture b, is obtained by iron-bearing material, fuel, quick lime blended machine mixed pelletization, wherein iron content is former
The mass fraction of material is 92%～95%, and fuel mass fraction is 4%～6%, and adjustment calculogenesis ash content makes sinter mixture b's
Basicity is not more than 0.5；The granularmetric composition of sinter mixture b be more than 3mm be less than or equal to the mass percent 45% of 5mm～
50%, the mass percent being less than or equal to 8mm more than 5mm is 35%～40%.
3), when reaching sintering end point, upper strata acid sinter ore and lower floor's high basicity sinter unload ore deposit in tail simultaneously and crush,
Cooled mixing and screening mix, and form the composite sinter that comprehensive basicity is 1～1.4.
Described sintering machine total length is more than 90m, and machine speed is set as 1.6m/ according to bed of material gross thickness and secondary material distributing position
Min～2.4m/min.
Described sintering deposit synthesis basicity is the weighted average by quality of levels sinter basicity, and it passes through to adjust upper strata
It is adjusted with the thickness of lower floor sinter mixture and basicity.
Described sinter mixture b, in its iron-bearing material, the mass percent of iron ore concentrate is 25%～35%, the matter of rich ore powder
Amount percent is 50%～65%, and the mass percent returned mine is 5%～15%.
Following beneficial effect can be obtained by this method:
1st, the present invention is sintered by cloth twice and twice igniting, makes sintering machine top compound and bottom compound
It is sintered simultaneously, increased sintering material layer thickness, improve Sintering Yield.
2nd, the present invention is sintered by cloth twice and twice igniting, the alkali of adjustment the upper and lower sinter mixture
Degree, can once sintered produce two kinds of basicity sintering deposit, reduce sintering cost.
3rd, the present invention once produces the sintering deposit of two kinds of basicity, and it is a kind of comprehensive that it crushes through unloading ore deposit, screening mixes formation
The suitable blending ore of basicity, it is possible to reduce the usage amount of pellet, reduces ironmaking cost.
Specific embodiment
Embodiment 1
Iron-bearing material, fuel, limestone and quick lime blended machine mixed pelletization are obtained sinter mixture a, wherein contains
The mass fraction of iron material is 78%, and fuel mass fraction is 4%, and Lime Quality fraction is 5%, the percent mass of limestone
Number is 13%；The basicity of sinter mixture a is 2.2, and its granularmetric composition is more than the mass percent 44% that 3mm is less than or equal to 5mm,
The mass percent being less than or equal to 8mm more than 5mm is 32%.
Iron-bearing material, fuel, quick lime blended machine mixed pelletization obtained sinter mixture b, wherein iron-bearing material
Mass fraction is 94%, and fuel mass fraction is 5%, and the mass percent of quick lime is 1%；The basicity of sinter mixture b is
0.4, its granularmetric composition is the mass percent 50% being less than or equal to 5mm more than 3mm, is less than or equal to the quality hundred of 8mm more than 5mm
Fraction is 38%；In the iron-bearing material of sinter mixture b, the mass percent of iron ore concentrate is 27%, the mass percent of rich ore powder
For 63%, the mass percent returned mine is 10%.
Sintering machine length is 100m, in head, sinter mixture a cloth is added to pallet, and fabric thickness is 650mm；Warp
First lighter igniting down draft sintering for the first time, firing temperature is 980 DEG C, and suction pressure is 11000pa；When pallet runs
To away from sintering machine first set ignition system distance be sintering machine total length 51 when, in the agglomerate surface being sintered
Cloth adds sinter mixture b, and the thickness of its cloth is 450mm, lights a fire for the second time down draft sintering through secondary igniter, and firing temperature is
1080 DEG C, suction pressure is 17000pa.Sintering machine machine speed is set as 1.8m/ according to bed of material gross thickness and secondary material distributing position
min.
When reaching sintering end point, upper strata acid sinter ore and lower floor's high basicity sinter unload ore deposit in tail simultaneously and crush, warp
Cooling mixes and screening mixes, and forms the composite sinter that comprehensive basicity is 1.3.Block by 90% composite sinter and 10%
Ore deposit adds blast furnace to be smelted iron.
After the present invention, sintering machine unit-hour output improves 25%, and sintering solid burnup reduces 1kg/t, and ironmaking cost drops
Low 15 yuan/t.
Embodiment 2
Iron-bearing material, fuel, limestone and quick lime blended machine mixed pelletization are obtained sinter mixture a, wherein contains
The mass fraction of iron material is 82%, and fuel mass fraction is 3.2%, and Lime Quality fraction is 5.5%, the quality of limestone
Percent is 9.3%；The basicity of sinter mixture a is 1.95, and its granularmetric composition is more than the percent mass that 3mm is less than or equal to 5mm
Number 40%, the mass percent being less than or equal to 8mm more than 5mm is 35%.
Iron-bearing material, fuel, quick lime blended machine mixed pelletization obtained sinter mixture b, wherein iron-bearing material
Mass fraction is 94.5%, and fuel mass fraction is 5.5%；The basicity of sinter mixture b be 0.2, its granularmetric composition be more than
3mm is less than or equal to the mass percent 46% of 5mm, and the mass percent being less than or equal to 8mm more than 5mm is 40%；Sintered compound
In the iron-bearing material of material b, the mass percent of iron ore concentrate is 30%, and the mass percent of rich ore powder is 55%, the quality hundred returned mine
Fraction is 15%.
Sintering machine length is 110m, in head, sinter mixture a cloth is added to pallet, and fabric thickness is 750mm；Warp
First lighter igniting down draft sintering for the first time, firing temperature is 950 DEG C, and suction pressure is 14000pa；When pallet runs
It is sintering machine total length to the distance away from sintering machine first set ignition systemWhen, in the agglomerate surface being sintered
Cloth adds sinter mixture b, and the thickness of its cloth is 550mm, lights a fire for the second time down draft sintering through secondary igniter, and firing temperature is
1120 DEG C, suction pressure is 19000pa.Sintering machine machine speed is set as 2.2m/ according to bed of material gross thickness and secondary material distributing position
min.
When reaching sintering end point, upper strata acid sinter ore and lower floor's high basicity sinter unload ore deposit in tail simultaneously and crush, warp
Cooling mixes and screening mixes, and forms the composite sinter that comprehensive basicity is 1.1.100% composite sinter is added blast furnace
Smelted iron.
After the present invention, sintering machine unit-hour output improves 30%, and sintering solid burnup reduces 1.5kg/t, ironmaking cost
Reduce by 10 yuan/t.
Claims (4)
1. a kind of pair of basicity composite sinter super thick bed of material sintering method it is characterised in that: twice cloth, twice igniting carry out
Sintering, and the upper and lower sinter mixture is different, specifically comprises the following steps that
1) sinter mixture a is added to pallet in sintering device handpiece cloth first, and its fabric thickness is 600mm～800mm；Through
One lighter igniting down draft sintering for the first time, firing temperature is 900～1000 DEG C, and suction pressure is 8000pa～15000pa；
Described sinter mixture a, is obtained by iron-bearing material, fuel, limestone and quick lime blended machine mixed pelletization, wherein contains
The mass fraction of iron material is 70%～85%, and fuel mass fraction is 3%～4%, and Lime Quality fraction is 4%～6%,
It is 1.8～2.4 that adjustment limestone content makes the basicity of compound a；The granularmetric composition of sinter mixture a be greater than 3mm be less than etc.
In 5mm mass percent be 40%～45%, more than 5mm be less than or equal to 8mm mass percent be 30%～35%；
2) when the distance that pallet runs to away from sintering machine first set ignition system is sintering machine total lengthWhen, just
Add sinter mixture b in the agglomerate surface cloth being sintered, the thickness of its cloth is 400mm～600mm, through secondary igniter
Second igniting down draft sintering, firing temperature is 1050～1150 DEG C, and suction pressure is 12000pa～20000pa；
Described sinter mixture b, obtained by iron-bearing material, fuel, quick lime blended machine mixed pelletization, wherein iron-bearing material
Mass fraction is 92%～95%, and fuel mass fraction is 4%～6%, and adjustment calculogenesis ash content makes the basicity of sinter mixture b
For being not more than 0.5；The granularmetric composition of sinter mixture b is the mass percent 45%～50% being less than or equal to 5mm more than 3mm,
The mass percent being less than or equal to 8mm more than 5mm is 35%～40%；
3), when reaching sintering end point, upper strata acid sinter ore and lower floor's high basicity sinter unload ore deposit in tail simultaneously and crush, through cold
But mix and screening mixes, form the composite sinter that comprehensive basicity is 1～1.4.
2. a kind of pair of basicity composite sinter according to claim 1 super thick bed of material sintering method it is characterised in that: institute
State sintering machine total length and be more than 90m, machine speed is set as 1.6m/min～2.4m/ according to bed of material gross thickness and secondary material distributing position
min.
3. a kind of pair of basicity composite sinter according to claim 1 super thick bed of material sintering method it is characterised in that: institute
State the weighted average by quality that sintering deposit synthesis basicity is levels sinter basicity, it passes through to adjust the upper and lower sintering
The thickness of compound and basicity are adjusted.
4. a kind of pair of basicity composite sinter according to claim 1 super thick bed of material sintering method it is characterised in that: institute
State sinter mixture b, in its iron-bearing material, the mass percent of iron ore concentrate is 25%～35%, the mass percent of rich ore powder is
50%～65%, the mass percent returned mine is 5%～15%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112522460A (en) * | 2020-11-18 | 2021-03-19 | 山东钢铁集团日照有限公司 | Method for adjusting airflow distribution by spreading blast furnace burden |
| CN112760479A (en) * | 2020-12-27 | 2021-05-07 | 中南大学 | Sintering method for improving quality of vanadium-titanium sintered mineral product |
| CN113462889A (en) * | 2021-06-28 | 2021-10-01 | 鞍钢股份有限公司 | Super-thick material layer sintering steam humidifying and heat preserving method |
| CN114250358A (en) * | 2021-12-06 | 2022-03-29 | 江苏沙钢集团有限公司 | Super-thick material layer sintering process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62130227A (en) * | 1985-12-03 | 1987-06-12 | Kawasaki Steel Corp | Method for sintering fine ore |
| JPH09176749A (en) * | 1995-12-26 | 1997-07-08 | Nippon Steel Corp | Production of sintered ore |
| JPH09209050A (en) * | 1996-02-05 | 1997-08-12 | Nippon Steel Corp | Manufacture of sintered ore by high layer thickness |
| CN1924035A (en) * | 2005-09-01 | 2007-03-07 | 中南大学 | Composite agglomeration technology of iron powdered ore |
| CN103160687A (en) * | 2011-12-14 | 2013-06-19 | 鞍钢股份有限公司 | Method for manufacturing broken pellet sinter |
| CN104894367A (en) * | 2014-03-05 | 2015-09-09 | 吕庆 | Sintering technology for acidic pellet ore and alkaline material mixed ultra-thick material layer |
-
2016
- 2016-09-12 CN CN201610815322.0A patent/CN106337117B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62130227A (en) * | 1985-12-03 | 1987-06-12 | Kawasaki Steel Corp | Method for sintering fine ore |
| JPH09176749A (en) * | 1995-12-26 | 1997-07-08 | Nippon Steel Corp | Production of sintered ore |
| JPH09209050A (en) * | 1996-02-05 | 1997-08-12 | Nippon Steel Corp | Manufacture of sintered ore by high layer thickness |
| CN1924035A (en) * | 2005-09-01 | 2007-03-07 | 中南大学 | Composite agglomeration technology of iron powdered ore |
| CN103160687A (en) * | 2011-12-14 | 2013-06-19 | 鞍钢股份有限公司 | Method for manufacturing broken pellet sinter |
| CN104894367A (en) * | 2014-03-05 | 2015-09-09 | 吕庆 | Sintering technology for acidic pellet ore and alkaline material mixed ultra-thick material layer |
Non-Patent Citations (1)
| Title |
|---|
| C.泽温等: "新利佩茨克钢铁公司双层布料双碱度烧结工艺", 《烧结球团》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112522460A (en) * | 2020-11-18 | 2021-03-19 | 山东钢铁集团日照有限公司 | Method for adjusting airflow distribution by spreading blast furnace burden |
| CN112522460B (en) * | 2020-11-18 | 2022-05-17 | 山东钢铁集团日照有限公司 | Method for adjusting airflow distribution by spreading blast furnace burden |
| CN112760479A (en) * | 2020-12-27 | 2021-05-07 | 中南大学 | Sintering method for improving quality of vanadium-titanium sintered mineral product |
| CN113462889A (en) * | 2021-06-28 | 2021-10-01 | 鞍钢股份有限公司 | Super-thick material layer sintering steam humidifying and heat preserving method |
| CN114250358A (en) * | 2021-12-06 | 2022-03-29 | 江苏沙钢集团有限公司 | Super-thick material layer sintering process |
| WO2023103513A1 (en) * | 2021-12-06 | 2023-06-15 | 江苏沙钢集团有限公司 | Ultra-thick material layer sintering process |
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| CN106337117B (en) | 2018-05-29 |
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