CN106755670B - A kind of smelting process of vanadium titano-magnetite - Google Patents
A kind of smelting process of vanadium titano-magnetite Download PDFInfo
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- CN106755670B CN106755670B CN201611154913.4A CN201611154913A CN106755670B CN 106755670 B CN106755670 B CN 106755670B CN 201611154913 A CN201611154913 A CN 201611154913A CN 106755670 B CN106755670 B CN 106755670B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
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Abstract
The present invention discloses a kind of smelting process of vanadium titano-magnetite, and the smelting process includes: that burden distribution system is J33 3 31 3 29 3 27 2 20 2, K31 2 29 3 27 2 26 2；Wherein, what J was indicated is coke, and what K was indicated is ore, and the tilt angle of distributor chute is divided into 6 gears, 5 gears, 4 gears, 3 gears, 2 gears and 1 gear, and digital subscript indicates corresponding angle, the circle number of numeric suffix respective notch.The smelting process cloth is uniform, and gas fluid distrbution is reasonable, improves gas utilization rate, improves smelting strength of blast furnace, it is therefore prevented that furnace wall dross phenomenon.
Description
Technical field
The present invention relates to ironmaking technology fields, and in particular to a kind of smelting process of vanadium titano-magnetite.
Background technique
Blast furnace is a kind of counter-current reactor, and coal gas is generated in bottom house, then rises through the bed of material；Furnace charge is from upper subordinate
Drop is acted on coal gas, completes the smelting processes such as heating, reduction, slag making, fusing., in blast furnace from top to bottom, temperature is gradually for furnace charge
It increases, before fusing, is always maintained at the layer structure of furnace throat cloth.Ore layer is different with coke layer gas permeability, ore layer
Resistance ratios coke layer is 10~20 times big.
Currently, generally carrying out blast furnace material distribution by the way of loading in mixture, influenced by factors such as raw material and fuel quality level variations, it is high
In process of production, the local Gas Flow more than coke relatively develops furnace, thus charge-temperature increases fastly, it is difficult to ensure that the high coal gas of blast furnace
Utilization rate.
Summary of the invention
In view of this, the smelting process cloth is uniform, coal this application provides a kind of smelting process of vanadium titano-magnetite
Air flow method is reasonable, improves gas utilization rate, improves smelting strength of blast furnace, it is therefore prevented that furnace wall dross phenomenon.
In order to solve the above technical problems, technical solution provided by the invention is a kind of smelting process of vanadium titano-magnetite, institute
State smelting process include: burden distribution system be J33 3 31 3 29 3 27 2 20 2, K31 2 29 3 27 2 26 2；Wherein, what J was indicated is coke, and what K was indicated is mine
Stone, the tilt angle of distributor chute are divided into 6 gears, 5 gears, 4 gears, 3 gears, 2 gears and 1 gear, digital subscript table
Show that corresponding angle, the circle number of numeric suffix respective notch, the tilt angle of distributor chute are divided into 6 gears, 5 gears, 4
Gear, 3 gears, 2 gears and 1 gear, corresponding angle is 33 °, 31 °, 29 °, 27 °, 26 ° and 20 °, in 6 gears
It sets, when coke is fallen into, 3 circle of chute rotation；In 5 file locations, when coke is fallen into, 3 circle of chute rotation, when ore is fallen into, chute rotation
Turn 2 circles；In 4 file locations, when coke is fallen into, 3 circle of chute rotation, when ore is fallen into, 3 circle of chute rotation；In 3 file locations, coke
When falling into, 2 circle of chute rotation, when ore is fallen into, 2 circle of chute rotation；In 2 file locations, when ore is fallen into, 2 circle of chute rotation；?
1 file location, when coke is fallen into, 2 circle of chute rotation.
Preferably, the ore is made of large quantities of mine ores and small quantities of mine ore, large quantities of mine ore partial sizes be 8~
16mm, small quantities of money ore partial size are 6~8mm.
Preferably, the smelting process further includes that large quantities of mine ores and small quantities of mine ore are mixed to get the ore.
Preferably, 4.8~4.9t/t of the method coke load.
Preferably, it is burner hearth internal diameter that the smelting process, which further includes the distance for controlling the ore radial edges to furnace wall,
1/9~1/5 carries out cloth.
Preferably, it is to rotate in the direction of the clock or by inverse that the smelting process, which further includes control distributor chute direction of rotation,
Clockwise rotation.
Preferably, the smelting process further includes at the uniform velocity being rotated using PLC control device control chute.
Preferably, it is 140~210 DEG C that the smelting process method, which further includes control cooktop edge temperature, central temperature 400
~700 DEG C.
Preferably, the smelting process further includes control air supply parameter: air quantity is 3310~3340Nm3/ min, air intake surface
Product is 0.235~0.245m3。
Preferably, it is 1.6~2.0% that the smelting process, which further includes control oxygen enrichment percentage,.
Preferably, it is 175~195kpa that the smelting process, which further includes control furnace top pressure,.
Preferably, the smelting process gas utilization rate is 51~52%.
Preferably, the lip temperature and the central temperature are measured using cross temperature instrument, the lip temperature be by
The temperature of the nearly furnace wall, the central temperature are the temperature of top margin planar central.
Compared with prior art, detailed description are as follows by the application:
Herein described ore is that small mine described in 6~8mm batch ore forms by the big mine batch ore and partial size, described small
The use of mine batch ore, reduces the rate of return mine；There is the small mine batch preferable stability to be finely adjusted to coal gas, the big mine
Criticizing partial size is 8~16mm as basic mine batch, and big mine is criticized to cloth after mixing with small barrow and is prevented due to mine batch variation is excessive
Cause gas flow distribution unbalance, meanwhile, cloth is carried out with coke again after first mixing the big mine batch ore and the small mine batch ore
Material, simplifies cloth process, has saved stock and feeding time, and then improve blast furnace process efficiency.
The application burden distribution system combines the control to furnace roof central temperature and cooktop edge temperature, can form reasonable coal gas
Flow distribution realizes the purpose at opening center, stabilised edge, reduces fuel ratio；Furnace roof central temperature is controlled, central temperature mistake is avoided
Height causes center Gas Flow overweight, and material speed in edge is caused slowly to be also easy to produce furnace wall dross, effectively control coke ratio, avoids central temperature
Caused by too low, furnace charge downlink caused by center gas flow is small has some setbacks, and improves smelting strength of blast furnace；It is low to control lip temperature
In central temperature, the corrosion of furnace wall caused by avoiding edge gas flow excessive improves gas utilization rate and material speed, avoids edge
Gas flow is too small, is easy to happen furnace wall dross knot thickness situation；Meanwhile the distance for controlling ore radial edges to the furnace wall is
The 1/9~1/5 of burner hearth internal diameter carries out cloth.So that edge coal gas circulates, blast furnace process efficiency is improved, improves coal gas utilization
Rate effectively prevents furnace wall dross phenomenon.
It is to rotate or rotate in the direction of the clock counterclockwise that the application, which controls distributor chute direction of rotation, is used
PLC control device control chute at the uniform velocity rotates, and ensure that cloth is uniform, is conducive to improve rate of driving.
Specific embodiment
It is right combined with specific embodiments below in order to make those skilled in the art more fully understand technical solution of the present invention
The present invention is described in further detail.
Embodiment 1
A kind of smelting process of vanadium titano-magnetite include: be the large quantities of mine ores of 8~16mm by partial size and partial size is 6~8mm
Small quantities of money ore be mixed to get ore, according to burden distribution system J33 3 31 3 29 3 27 2 20 2, K31 2 29 3 27 2 26 2Carry out cloth；Wherein, J is indicated
Be coke, what K was indicated is ore, and the tilt angle of distributor chute is divided into 6 gears, 5 gears, 4 gears, 3 gears, 2 gears
And 1 gear, digital subscript indicate corresponding angle, the circle number of numeric suffix respective notch, the inclination angle of distributor chute
Degree is divided into 6 gears, 5 gears, 4 gears, 3 gears, 2 gears and 1 gear, corresponding angle is 33 °, 31 °, 29 °,
27 °, 26 ° and 20 °, in 6 file locations, when coke is fallen into, 3 circle of chute rotation；In 5 file locations, when coke is fallen into, chute rotation
3 circles, when ore is fallen into, 2 circle of chute rotation；In 4 file locations, when coke is fallen into, 3 circle of chute rotation, when ore is fallen into, chute rotation
Turn 3 circles；In 3 file locations, when coke is fallen into, 2 circle of chute rotation, when ore is fallen into, 2 circle of chute rotation；In 2 file locations, ore
When falling into, 2 circle of chute rotation；In 1 file location, when coke is fallen into, 2 circle of chute rotation.
The distance that cloth process controls the ore radial edges to furnace wall is the 1/9 of burner hearth internal diameter, controls distributor chute
Direction of rotation is to rotate or rotate in the direction of the clock counterclockwise, and at the uniform velocity revolved using PLC control device control chute
Turn.After the completion of cloth, chute stops rotating, and promotes chute, puts down stock rod, closes stream material regulating valve, and cloth terminates.
The lip temperature and the central temperature are measured using cross temperature instrument, the lip temperature is close to the furnace
The temperature of wall, the central temperature are the temperature of top margin planar central, and the lip temperature is 140 DEG C, central temperature 400
DEG C, furnace top pressure 175kpa.Lower part adjustment process, controls air supply parameter: air quantity 3340Nm3/ min, incoming air area are
0.235m3.Controlling oxygen enrichment percentage is 1.8%.
Final measurement coke load 4.9t/t.The smelting process gas utilization rate is 51.2%, coal ratio 144kg/t
Fe, coke ratio 412kg/tFe, ore deposit consumption 2011kg/tFe.
Embodiment 2
A kind of smelting side of vanadium titano-magnetite include: be the large quantities of mine ores of 8~16mm by partial size and partial size is 6~8mm's
Small quantities of money ore is mixed to get ore, according to burden distribution system J33 3 31 3 29 3 27 2 20 2, K31 2 29 3 27 2 26 2Carry out cloth；Wherein, J is indicated
Coke, what K was indicated is ore, the tilt angle of distributor chute be divided into 6 gears, 5 gears, 4 gears, 3 gears, 2 gears with
And 1 gear, digital subscript indicate corresponding angle, the circle number of numeric suffix respective notch, the tilt angle of distributor chute
Be divided into 6 gears, 5 gears, 4 gears, 3 gears, 2 gears and 1 gear, corresponding angle is 33 °, 31 °, 29 °, 27 °,
26 ° and 20 °, in 6 file locations, when coke is fallen into, 3 circle of chute rotation；In 5 file locations, when coke is fallen into, 3 circle of chute rotation,
When ore is fallen into, 2 circle of chute rotation；In 4 file locations, when coke is fallen into, 3 circle of chute rotation, when ore is fallen into, chute rotation 3
Circle；In 3 file locations, when coke is fallen into, 2 circle of chute rotation, when ore is fallen into, 2 circle of chute rotation；In 2 file locations, ore is fallen into
When, 2 circle of chute rotation；In 1 file location, when coke is fallen into, 2 circle of chute rotation.
The distance that cloth process controls the ore radial edges to furnace wall is the 1/7 of burner hearth internal diameter, controls distributor chute
Direction of rotation is to rotate or rotate in the direction of the clock counterclockwise, and at the uniform velocity revolved using PLC control device control chute
Turn.After the completion of cloth, chute stops rotating, and promotes chute, puts down stock rod, closes stream material regulating valve, and cloth terminates.
The lip temperature and the central temperature are measured using cross temperature instrument, the lip temperature is close to the furnace
The temperature of wall, the central temperature are the temperature of top margin planar central, and the lip temperature is 170 DEG C, central temperature 600
DEG C, furnace top pressure 185kpa.Lower part adjustment process, controls air supply parameter: air quantity 3310Nm3/ min, incoming air area are
0.245m3.Controlling oxygen enrichment percentage is 1.6%.
Final measurement coke load 4.8t/t.The smelting process gas utilization rate be 52%, coal ratio 147kg/tFe,
Coke ratio is 410kg/tFe, ore deposit consumption 2000kg/tFe.
Embodiment 3
A kind of smelting process of vanadium titano-magnetite include: be the large quantities of mine ores of 8~16mm by partial size and partial size is 6~8mm
Small quantities of money ore be mixed to get ore, according to burden distribution system J33 3 31 3 29 3 27 2 20 2, K31 2 29 3 27 2 26 2Carry out cloth；Wherein, J is indicated
Be coke, what K was indicated is ore, and the tilt angle of distributor chute is divided into 6 gears, 5 gears, 4 gears, 3 gears, 2 gears
And 1 gear, digital subscript indicate corresponding angle, the circle number of numeric suffix respective notch, the inclination angle of distributor chute
Degree is divided into 6 gears, 5 gears, 4 gears, 3 gears, 2 gears and 1 gear, corresponding angle is 33 °, 31 °, 29 °,
27 °, 26 ° and 20 °, in 6 file locations, when coke is fallen into, 3 circle of chute rotation；In 5 file locations, when coke is fallen into, chute rotation
3 circles, when ore is fallen into, 2 circle of chute rotation；In 4 file locations, when coke is fallen into, 3 circle of chute rotation, when ore is fallen into, chute rotation
Turn 3 circles；In 3 file locations, when coke is fallen into, 2 circle of chute rotation, when ore is fallen into, 2 circle of chute rotation；In 2 file locations, ore
When falling into, 2 circle of chute rotation；In 1 file location, when coke is fallen into, 2 circle of chute rotation.
The distance that cloth process controls the ore radial edges to furnace wall is the 1/5 of burner hearth internal diameter, controls distributor chute
Direction of rotation is to rotate or rotate in the direction of the clock counterclockwise, and at the uniform velocity revolved using PLC control device control chute
Turn.After the completion of cloth, chute stops rotating, and promotes chute, puts down stock rod, closes stream material regulating valve, and cloth terminates.
The lip temperature and the central temperature are measured using cross temperature instrument, the lip temperature is close to the furnace
The temperature of wall, the central temperature are the temperature of top margin planar central, and the lip temperature is 210 DEG C, central temperature 700
DEG C, furnace top pressure 195kpa.Lower part adjustment process, controls air supply parameter: air quantity 3330Nm3/ min, incoming air area are
0.240m3.Controlling oxygen enrichment percentage is 2.0%.
Final measurement coke load 4.82t/t.The smelting process gas utilization rate be 51%, coal ratio 148kg/tFe,
Coke ratio is 415kg/tFe, ore deposit consumption 2002kg/tFe.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (8)
1. a kind of smelting process of vanadium titano-magnetite, which is characterized in that the smelting process burden distribution system is J33 3 31 3 29 3 27 2 20 2,
K31 2 29 3 27 2 26 2；Wherein, what J was indicated is coke, and what K was indicated is ore, and the tilt angle of distributor chute is divided into 6 gears, 5 grades
Position, 4 gears, 3 gears, 2 gears and 1 gear, digital subscript indicate corresponding angle, the circle of numeric suffix respective notch
Number, 6 gears, 5 gears, 4 gears, 3 gears, 2 gears and 1 gear that the tilt angle of distributor chute divides are corresponding
Angle is 33 °, 31 °, 29 °, 27 °, 26 ° and 20 °, in 6 file locations, when coke is fallen into, and 3 circle of chute rotation；In 5 file locations,
When coke is fallen into, 3 circle of chute rotation, when ore is fallen into, 2 circle of chute rotation；In 4 file locations, when coke is fallen into, chute rotation 3
Circle, when ore is fallen into, 3 circle of chute rotation；In 3 file locations, when coke is fallen into, 2 circle of chute rotation, when ore is fallen into, chute rotation
Turn 2 circles；In 2 file locations, when ore is fallen into, 2 circle of chute rotation；In 1 file location, when coke is fallen into, 2 circle of chute rotation；It is described
Smelting process further includes that control cooktop edge temperature is 140~210 DEG C, and central temperature is 180~700 DEG C；The smelting process
It further include 1/9~1/5 progress cloth that the distance for controlling the ore radial edges to furnace wall is burner hearth internal diameter.
2. smelting process according to claim 1, which is characterized in that the ore is by large quantities of mine ores and small quantities of mine ore
Composition, large quantities of mine ore partial sizes are 8~16mm, and small quantities of money ore partial size is 6~8mm.
3. smelting process according to claim 1, which is characterized in that 4.8~4.9t/t of the smelting process coke load.
4. smelting process according to claim 1, which is characterized in that the smelting process further includes control distributor chute rotation
Turning direction is to rotate or rotate in the direction of the clock counterclockwise.
5. smelting process according to claim 1, which is characterized in that the smelting process further includes using PLC control dress
Control chute is set at the uniform velocity to rotate.
6. smelting process according to claim 1, which is characterized in that the smelting process further includes control air supply parameter:
Air quantity is 3310~3340Nm3/ min, incoming air area are 0.235~0.245m3。
7. smelting process according to claim 1, which is characterized in that the smelting process further includes that control oxygen enrichment percentage is
1.6~2.0%.
8. smelting process according to claim 1, which is characterized in that the smelting process further includes that control furnace top pressure is
175~195kPa.
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| CN107287372B (en) * | 2017-06-26 | 2019-03-29 | 山西太钢不锈钢股份有限公司 | A kind of method of blast furnace throat radial coke power load distributing |
| CN110923379B (en) * | 2019-11-05 | 2022-02-11 | 攀钢集团西昌钢钒有限公司 | Blast furnace burden distribution method for smelting vanadium titano-magnetite |
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| CN103014210A (en) * | 2012-12-21 | 2013-04-03 | 江苏永钢集团有限公司 | Top distribution device and distribution method for blast furnace |
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| CN103014210A (en) * | 2012-12-21 | 2013-04-03 | 江苏永钢集团有限公司 | Top distribution device and distribution method for blast furnace |
| CN103898258A (en) * | 2014-04-09 | 2014-07-02 | 莱芜钢铁集团有限公司 | Method for burden distribution of blast furnace |
| CN103966373A (en) * | 2014-04-29 | 2014-08-06 | 江苏省沙钢钢铁研究院有限公司 | Bell-less material distribution method for stable and smooth running of blast furnace |
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