CN110283956A - Whether go out most devices and methods therefor for rational judgment Blast furnace slag - Google Patents
Whether go out most devices and methods therefor for rational judgment Blast furnace slag Download PDFInfo
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- CN110283956A CN110283956A CN201910676888.3A CN201910676888A CN110283956A CN 110283956 A CN110283956 A CN 110283956A CN 201910676888 A CN201910676888 A CN 201910676888A CN 110283956 A CN110283956 A CN 110283956A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
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- C21—METALLURGY OF IRON
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- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
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Abstract
Whether go out most device for rational judgment Blast furnace slag the invention discloses a kind of, including blast-furnace body and iron mouth and hot-metal ladle and carriage, iron hook and slag hook are correspondingly arranged at the iron mouth, hot-metal ladle and carriage corresponds to iron hook setting, it further include water slag drum, grain slag conveyor belt and slag storehouse, one end of the water slag drum corresponds to the setting of slag hook, the other end of water slag drum corresponds to the setting of grain slag conveyor belt, grain slag conveyor belt is equipped with the weighing belt for weighing, and slag storehouse is correspondingly arranged at the lower section of grain slag conveyor belt.Method is the following steps are included: whether the calculating and Blast furnace slag of the record of tapping duration, the out metering of iron, the metering of slag discharge amount, the measurement of grain slag moisture content, the calculating for iron of slagging tap, theoretical iron with the theoretical quantity of slag go out most judgement.It accurately can comprehensively react tap cinder iron situation.
Description
Technical field
Whether the present invention relates to technical field of blast furnace ironmaking, go out to the greatest extent more particularly, to one kind for rational judgment Blast furnace slag
Devices and methods therefor.
Background technique
Whether the stabilization and slag iron of stokehold tapping, which go out, has great influence and blast furnace regular job to the stabilization of the working of a furnace to the greatest extent
Important foundation.The cycle emissions of slag iron provide sustainable space for furnace charge decline.Slag iron, which goes out, is full of blast furnace stable operation
The primary responsibility of basis and flushing and casting.Suppress slag suppress iron easily lead to blast furnace wind pressure rise, material speed it is uneven, cause coal gas flow point
The disorder of cloth, and then conditions of blast furnace is caused to fluctuate, cause checking to be withdrawed and stood on the defensive when serious, seriously affects blast furnace and normally produce.Therefore high
Furnace flushing and casting requires that slag iron to the greatest extent must be gone out, and keeps the stabilization of tapping, ensures the stable operation of blast furnace.
Judge whether out most method mainly has calculating method and observation for slag iron in blast furnace at present.Wherein, calculating method is main
It is that the theoretical yield for calculating the same day and actual production compare, and carry out statistics to tapping duration, time of slagging tap and calculate two
Kind.The theoretical yield and actual production calculating for carrying out the same day are able to reflect the same day and go out iron micro ball, judge iron whether there is or not going out to the greatest extent, but due to
Dose times are long, cannot reflect the tapping situation of a certain heat in time, cannot be adjusted in time to opening time, have adjustment
Hysteresis quality;And this method only can reflect iron situation, not can reflect slag situation.It is carried out using tapping, time of slagging tap
Statistics calculates, and the variation of tapping and time of slagging tap is able to reflect, but due to the variation of flowing molten iron speed, when this method is simply possible to use in
Between on reference, calculated not according to material balance, cannot quantitatively characterize slag iron whether go out to the greatest extent.Sight is generallyd use in production
Method is examined to judge whether slag iron goes out to the greatest extent in blast furnace.Operative employee is judged by observing iron mouth situation, when iron mouth, which carrys out wind, sees spray,
It is judged as that slag iron goes out to the greatest extent, does not otherwise go out to the greatest extent for slag iron.This method can be judged intuitive and conveniently, but since there are tapping
Cupola well is not lived in the process, and slag iron circulation, middle one's will dies within one stock column liquid permeability are bad or the unsmooth cause iron mouth of iron mouth pore passage occurs carrying out wind in short-term
Sign, there is a certain error for this subjective judgement.
By patent retrieval, has relevant condition heartily is gone out with slag iron liquid level characterization slag iron in blast furnace crucibe at present
Patent disclosure.Chinese Patent Application No. CN201610880421.7 discloses a kind of on-line measurement blast furnace crucibe slag iron level information
Method, this method with slag iron heat storage capacity it is different caused by between cupola well refractory material and furnace shell heat transfer variation be that principle supports,
By being mounted on the measurement point of cupola well setting height surrounding Yu cupola well bottom, temperature information is fed back and exports electro-motive force measurement
Value, to characterize slag iron liquid level in cupola well.Due to blast furnace design be it is continually changing, furnace profile design has with furnace body construction structure
It closes, and operating the type of furnace then is gradually formed after blow-on is lighted a fire, and is constantly changed as the erosion of refractory material falls off.
This method is only capable of being applicable in the blow-on initial stage type of furnace regular stage, along with the continuous erosion of basque, cupola well refractory material and furnace
Great change occurs for heat transfer between shell, and the temperature information and electromotive force value of measurement are no longer accurate, cannot reflect that cupola well liquid level is believed strictly according to the facts
Breath.
In conclusion carrying out the method for blast furnace crucibe liquid level monitoring with cupola well using real-time monitoring data in the prior art
It further corrodes and is no longer applicable in, and the daily output or slag iron time is used to calculate, be unable to the slag iron of a certain heat of quantitative response
Amount, cannot be adjusted in time;Common observation also has subjective judgement error, not can accurately reflect tap cinder iron shape
Condition.
Summary of the invention
In view of the shortcomings of the prior art, technical problem to be solved by the invention is to provide one kind to be used for rational judgment blast furnace slag
Whether iron goes out most devices and methods therefor, accurately can comprehensively react tap cinder iron situation.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is as follows:
It is a kind of whether to go out most device, including blast-furnace body and iron mouth and hot-metal bottle for rational judgment Blast furnace slag
Vehicle is correspondingly arranged on iron hook and slag hook at the iron mouth, and hot-metal ladle and carriage corresponds to iron hook setting, further includes that water slag drum, grain slag are defeated
Belt and slag storehouse are sent, one end of the water slag drum corresponds to the setting of slag hook, and the other end of water slag drum corresponds to grain slag conveying skin
Band setting, grain slag conveyor belt are equipped with the weighing belt for weighing, and slag storehouse is correspondingly arranged at the lower section of grain slag conveyor belt.
The grain slag conveyor belt includes No. three skins of No. two belts of grain slag No.1 belt, grain slag and grain slag set gradually
Band, the grain slag No.1 belt are connected with water slag drum, and No. three belts of grain slag correspond to the setting of slag storehouse, and No. three belts of grain slag are higher than water
Slag No.1 belt and its between by No. two belts of grain slag be connected.
It further include transport railway, the hot-metal ladle and carriage is movably located on transport railway by track scale.
The iron hook and slag hook are located at the outer end of iron mouth, and slag hook is located at the top of iron hook.
Whether a kind of rational judgment Blast furnace slag goes out most method, comprising the following steps:.
Step 1: the record of tapping duration:
After blast furnace beats tapping outlet, the heat opening time is recorded, molten iron is with clinker after skimming tool separates, and molten iron is through iron runner
The hot-metal ladle and carriage on transport railway is flowed into, clinker enters water slag drum through slag runner, rear punching, is transported to slag storehouse through belt;Iron mouth
After blocking up, record is blocked up the time;
Step 2: the metering of iron out:
Attachment rail weighing apparatus, measures the self weight m of hot-metal ladle and carriage during tapping on transport railwayTankWith total weight after dress iron
mAlways;
Step 3: the metering of slag discharge amount:
Grain slag go out rotary drum No.1 belt and reach slag storehouse No. three belts on install respectively No.1 belt weighing belt and
No. three belt weighing belts measure the slag discharge amount m of two weighing belt positions during tapping1And m2;
Step 4: the measurement of grain slag moisture content:
Respectively in the No.1 belt weighing belt of installation and No. three belt weighing belt positions, slag specimen sample is repeatedly taken, weighs weight
Measure wIt is wet;Weight w is weighed after dryingIt is dry, then sample moisture content η=(w can be calculatedIt is wet-wIt is dry)/wIt is wet, take being averaged for multiple samples
Value, as the grain slag moisture content of the weighing belt position;According to said method, the grain slag moisture content of two weighing belt positions is determined
η1And η2;
Step 5: the calculating for iron of slagging tap:
According to the variable of iron out and slag discharge amount, grain slag moisture content and grain slag coefficient φ, the furnace can be calculated
The secondary iron that goes out is ∑ (mAlways-mTank), slag discharge amount is (m1-m1·η1+m2-m2·η2)/φ;
Step 6: the calculating of theoretical iron and the theoretical quantity of slag;
According to the tapping duration of the heat, charge number × every batch of material in theoretical iron=heat tapping duration is calculated
Theoretical iron, the theoretical quantity of slag=theory iron × core material residue ratio;
Step 7: whether Blast furnace slag goes out most judgement:
According to the variable of slag iron, it is compared with theoretical iron, the theoretical quantity of slag, judges whether the slag iron of the heat goes out
To the greatest extent;If practical iron < theory iron × 95%, it is judged as that iron does not go out to the greatest extent;If the actual quantity of slag < theory quantity of slag × 95%, judgement
Do not go out to the greatest extent for slag;Iron does not go out to the greatest extent if it exists or slag does not go out most situation, then next heat beats tapping outlet than the predetermined time in advance.
Weighing belt in the step 2 is once verified daily in non-tapping.
Blast-furnace slag flows into Punched box by slag runner in the step 3, through Punched box spray high pressure water flow water quenching punching at
Grain slag is most transported into slag storehouse through grain slag belt afterwards through entering water slag groove, communicating pipe rotary drum distributor.
Grain slag coefficient in the step 4Increase through high pressure water flow water quenching punching at the quality of grain slag for blast-furnace slag
Coefficient takes 1.2-1.4 according to knowhow formula.
The charge number in the heat tapping duration in the step 5 is by Research for Feeding Raw Materials System automatic gauge.
The theoretical iron of every batch of material in the step 5, core material residue ratio are the numbers based on material composition, materials structure
According to being obtained according to the MaterialBalance Computation of mass conservation law.
Compared with prior art, the present invention having the advantage that
(1) it can reflect to simultaneous quantitative the tapping situation of the heat and situation of slagging tap, be comprehensively reflected tap cinder
Iron situation carries out to the greatest extent quantitative analysis to judging whether Blast furnace slag goes out, provides timely data supporting for tapping duration adjustment, for
Blast furnace operating has great importance;
(2) according to mass conservation law, i.e. material balance is calculated, and has been precisely calculated theoretical iron and the quantity of slag;Rail
The metering of road weighing apparatus and weighing belt can accurately measure practical iron and the quantity of slag, and entire judgment method accuracy is high, and error is small;
(3) it is calculated using a certain heat as unit, can reflect current iron micro ball of slagging tap in time, be in time next furnace
Tapping duration provides reference, has timeliness, is conducive to maintain the stabilization of stokehold tapping and the stabilization of conditions of blast furnace.
Detailed description of the invention
Content expressed by each width attached drawing of this specification and the label in figure are briefly described below:
Fig. 1 is schematic structural diagram of the device of the invention.
In figure:
1, blast-furnace body;2, Tie Kou;3, slag runner;4, water slag drum;501, grain slag No.1 belt;502, No. two skins of grain slag
Band;503, No. three belts of grain slag;601, No.1 belt weighing belt;602, No. three belt weighing belts;7, slag storehouse;8, iron runner;9, it transports
Defeated railway;10, track scale;11, hot-metal ladle and carriage.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation.
As shown in Figure 1, this is used for whether rational judgment Blast furnace slag to go out most device, including blast-furnace body, Tie Kou, molten iron
Tank car, water slag drum, transport railway, grain slag conveyor belt and slag storehouse.
Iron hook and slag hook are correspondingly arranged at iron mouth, hot-metal ladle and carriage corresponds to iron hook setting, and one end of water slag drum corresponds to slag
Hook setting, the other end of water slag drum correspond to the setting of grain slag conveyor belt, and grain slag conveyor belt is equipped with the belt for weighing
Scale, slag storehouse are correspondingly arranged at the lower section of grain slag conveyor belt.
Iron hook and slag hook are located at the outer end of iron mouth, and slag hook is located at the top of iron hook;The end of slag hook and water slag drum entrance
It is correspondingly arranged, end and the hot-metal ladle and carriage upper port of iron hook are correspondingly arranged.Grain slag conveyor belt includes the grain slag one set gradually
Number No. three belt, No. two belts of grain slag and grain slag belts, the grain slag No.1 belt are connected with water slag drum, No. three skins of grain slag
The corresponding slag storehouse setting of band, No. three belts of grain slag are connected higher than between grain slag No.1 belt and its by No. two belts of grain slag, water
No. two belts of slag are obliquely installed.
Transport railway is located at the lower section of grain slag conveyor belt;Hot-metal ladle and carriage is torpedo tank car, and hot-metal ladle and carriage passes through track scale
It is movably located on transport railway, hot-metal ladle and carriage corresponds to iron hook setting, can measure to iron out.
Whether its rational judgment Blast furnace slag goes out most method, comprising the following steps:.
Step 1: the record of tapping duration:
After blast furnace 1 beats tapping outlet 2, the heat opening time is recorded, molten iron is with clinker after skimming tool separates, and molten iron is through iron
Ditch 8 flows into the hot-metal ladle and carriage 11 on transport railway 9, and clinker enters water slag drum 4 through slag runner 3, rear punching, is transported to through belt 5
Slag storehouse 7;After iron mouth 2 is blocked up, record is blocked up the time;
Step 2: the metering of iron out:
Attachment rail weighing apparatus 10, measures the self weight m of hot-metal ladle and carriage during tapping on transport railway 9TankWith it is total after dress iron
Weight mAlways;
Step 3: the metering of slag discharge amount:
No.1 belt is installed respectively on No. three belts 503 that grain slag goes out the No.1 belt 501 of rotary drum 4 and reaches slag storehouse 7
Weighing belt 601 and No. three belt weighing belts 602 measure the slag discharge amount m of two weighing belt positions during tapping1And m2;
Step 4: the measurement of grain slag moisture content:
Respectively in the No.1 belt weighing belt 601 of installation and No. three 602 positions of belt weighing belt, slag specimen sample is repeatedly taken,
Weigh weight wIt is wet;Weight w is weighed after dryingIt is dry, then sample moisture content η=(w can be calculatedIt is wet-wIt is dry)/wIt is wet, take multiple samples
Average value, the as grain slag moisture content of the weighing belt position;According to said method, the grain slag water of two weighing belt positions is determined
Divide content η1And η2;
Step 5: the calculating for iron of slagging tap:
According to the variable of iron out and slag discharge amount, grain slag moisture content and grain slag coefficientThe furnace can be calculated
The secondary iron that goes out is ∑ (mAlways-mTank), slag discharge amount is
Step 6: the calculating of theoretical iron and the theoretical quantity of slag;
According to the tapping duration of the heat, charge number × every batch of material in theoretical iron=heat tapping duration is calculated
Theoretical iron, the theoretical quantity of slag=theory iron × core material residue ratio;
Step 7: whether Blast furnace slag goes out most judgement:
According to the variable of slag iron, it is compared with theoretical iron, the theoretical quantity of slag, judges whether the slag iron of the heat goes out
To the greatest extent;If practical iron < theory iron × 95%, it is judged as that iron does not go out to the greatest extent;If the actual quantity of slag < theory quantity of slag × 95%, judgement
Do not go out to the greatest extent for slag;Iron does not go out to the greatest extent if it exists or slag does not go out most situation, then next heat beats tapping outlet than the predetermined time in advance.
Further, the weighing belt in step 2 is once verified daily in non-tapping.Blast-furnace slag in step 3
Punched box is flowed by slag runner, the high pressure water flow water quenching punching sprayed through Punched box is at grain slag, through water slag groove, communicating pipe entering rotary drum
Distributor is most transported into slag storehouse through grain slag belt afterwards.Grain slag coefficient in step 4It is rushed for blast-furnace slag through high pressure water flow water quenching
The quality that grain slag is made increases coefficient, takes 1.2-1.4 according to knowhow formula.
The charge number in the heat tapping duration in step 5 is by Research for Feeding Raw Materials System automatic gauge.It is every in step 5
The theoretical iron of batch of material, core material residue ratio are with material composition, materials structure for basic data, according to the material of mass conservation law
EQUILIBRIUM CALCULATION FOR PROCESS obtains.
Preferred embodiment are as follows:
Example 1:
The specific steps are that:
Step 1: the record of tapping duration:
A certain heat is randomly selected, after blast furnace 1 beats tapping outlet 2, records heat opening time 8:32, molten iron and clinker pass through
After skimming tool separation, molten iron flows into torpedo tank car 11 through iron runner 8, and clinker enters rotary drum 4 through punching, is transported to slag storehouse through belt 5
7;After iron mouth 2 is blocked up, the time 10:57 that blocks up is recorded.
Step 2: the metering of iron out:
The heat is total to three tank of tapping, according to the track scale 10 installed on transport railway 9, measures the bare weight of torpedo tank car respectively
mTankWith total weight m after dress ironAlways, wherein the first ullage weight 301.1t, Man Chong 580.6t, the second ullage weight 289.7t, Man Chong
592.4t, third ullage weight 295.4t, Man Chong 591.6t.
Step 3: the metering of slag discharge amount:
According to the No.1 belt weighing belt 601 and No. three belt weighing belts 602 of installation, two skins during tapping are measured
The slag discharge amount m of belt scale position1And m2, wherein the No.1 belt scale metering water outlet quantity of slag is 363t, and No. three belt scale meterings are discharged the quantity of slag
For 353t.
Step 4: the measurement of grain slag moisture content:
Respectively in the No.1 weighing belt 601 of installation and No. three 602 positions of weighing belt, in 9:00,9:30,10:00,10:30
Slag specimen sample is taken in four times, totally 8 samples, each sample takes 500g, weighs after drying.No.1 weighing belt takes four examinations
Weight is respectively 445g, 459g, 440g, 451g after sample drying, then can calculate sample moisture content be respectively 11.0%,
8.2%, 12.0%, 9.8%, taking its average value is 10.3%, as the grain slag moisture content of the No.1 weighing belt position.
It is respectively 469g, 459g, 477g, 470g that No. three weighing belts, which take weight after four sample dryings, then can calculate
Sample moisture content is respectively 6.2%, 8.2%, 4.6%, 6.0%, taking its average value is 6.3%, as No. three weighing belts
The grain slag moisture content of position.
Step 5: the calculating for iron of slagging tap:
According to torpedo tank car bare weight and Man Chong, calculating three canned iron is respectively 279.5t, 302.7t, 296.2t, meter
It calculates and goes out iron always for 878.4t.
According to the variable of two weighing belt slag discharge amounts, grain slag moisture content, can calculate No.1 weighing belt grain slag amount is
326t, No. three weighing belt grain slag amounts are 331t, and being averaged 328t is the practical grain slag amount of the heat;Divided by grain slag coefficient 1.3, obtain
It is 252t to the heat slag discharge amount.
Step 6: the calculating of theoretical iron and the theoretical quantity of slag;
Current blast furnace materials structure is mine batch 102t/ch, wherein sinter 68.48%, pellet 21%, Australia's mine
9.84%, domestic mine 0.68%, wherein sinter TFe 57.54%, FeO 8.51%, pellet TFe 63.14%, Australia's mine
TFe 63.36%, domestic mine TFe 49.40%, theoretical iron is 63.97t/ch, slag ratio 289kg/tFe;
The heat is total to tapping 145min, during which feeding 13.8ch altogether, when can be according to the formula theory iron=heat tapping
The interior theoretical iron of charge number × every batch of material, calculating theoretical iron is 883t.According to the formula theory quantity of slag=theory iron
Amount × core material residue ratio, can calculate the theoretical quantity of slag is 255t.
Step 7: whether Blast furnace slag goes out most judgement:
By the variable of slag iron, be compared with theoretical iron, the theoretical quantity of slag, to the slag iron of the heat whether go out to the greatest extent into
Row judgement.The practical iron of the heat is 878.4t, and theoretical iron is 883t, and the two ratio is 99.5%, is judged as that iron goes out to the greatest extent.It is real
The border quantity of slag is 252t, and the theoretical quantity of slag is 255t, and the two ratio is 98.8%, is judged as that slag goes out to the greatest extent;Since slag iron has gone out to the greatest extent, then
Next heat tapping system maintains.
Embodiment 2:
The specific steps are that:
Step 1: the record of tapping duration:
A certain heat is randomly selected, after blast furnace 1 beats tapping outlet 2, records heat opening time 8:55, molten iron and clinker pass through
After skimming tool separation, molten iron flows into torpedo tank car 11 through iron runner 8, and clinker enters rotary drum 4 through punching, is transported to slag storehouse through belt 5
7;After iron mouth 2 is blocked up, the time 11:34 that blocks up is recorded.
Step 2: the metering of iron out:
The heat is total to four tank of tapping, according to the track scale 10 installed on transport railway 9, measures the bare weight of torpedo tank car respectively
mTankWith total weight m after dress ironAlways, wherein the first ullage weight 303.2t, Man Chong 615.5t, the second ullage weight 297.8t, Man Chong
598.7t, third ullage weight 286.3t, Man Chong 572.1t, the 4th tank is less than, bare weight 296.0t, gross weight 337.6t.
Step 3: the metering of slag discharge amount:
According to the No.1 belt weighing belt 601 and No. three belt weighing belts 602 of installation, two skins during tapping are measured
The slag discharge amount m of belt scale position1And m2, wherein the No.1 belt scale metering water outlet quantity of slag is 370t, and No. three belt scale meterings are discharged the quantity of slag
For 362t.
Step 4: the measurement of grain slag moisture content:
Respectively in the No.1 weighing belt 601 of installation and No. three 602 positions of weighing belt, in 9:30,10:00,10:30,11:
00,11:30 takes slag specimen sample in five times, totally 10 samples, and each sample takes 500g, weighs after drying.No.1 weighing belt
Taking weight after five sample dryings is respectively 451g, 439g, 456g, 460g, 452g, then can calculate sample moisture content point
Not Wei 9.8%, 12.2%, 8.8%, 8.0%, 9.6%, taking its average value is 9.7%, the as water of the No.1 weighing belt position
Slag moisture content.
It is respectively 473g, 465g, 479g, 466g, 459g that No. three weighing belts, which take weight after five sample dryings, then can count
Calculating sample moisture content is respectively 5.4%, 7.0%, 4.2%, 6.8%, 8.2%, and taking its average value is 6.3%, as should
The grain slag moisture content of No. three weighing belt positions.
Step 5: the calculating for iron of slagging tap:
According to torpedo tank car bare weight and gross weight, calculate four canned iron be respectively 312.3t, 300.9t, 285.8t,
41.6t is calculated and is gone out iron always for 940.6t;
According to the variable of two weighing belt slag discharge amounts, grain slag moisture content, can calculate No.1 weighing belt grain slag amount is
334t, No. three weighing belt grain slag amounts are 339t, and being averaged 337t is the practical grain slag amount of the heat;Divided by grain slag coefficient 1.3, obtain
It is 259t to the heat slag discharge amount.
Step 6: the calculating of theoretical iron and the theoretical quantity of slag;
Current blast furnace materials structure is mine batch 106t/ch, wherein sinter 70.01%, pellet 21%, Australia's mine
8.51%, domestic mine 0.47%, wherein sinter TFe 57.55%, FeO 8.73%, pellet TFe 63.56%, Australia's mine
TFe 63.36%, domestic mine TFe 49.40%, theoretical iron is 65.07t/ch, slag ratio 288kg/tFe;
The heat is total to tapping 159min, during which feeding 15.3ch altogether, when can be according to the formula theory iron=heat tapping
The interior theoretical iron of charge number × every batch of material, calculating theoretical iron is 996t;According to the formula theory quantity of slag=theory iron
Amount × core material residue ratio, can calculate the theoretical quantity of slag is 287t.
Step 7: whether Blast furnace slag goes out most judgement:
By the variable of slag iron, be compared with theoretical iron, the theoretical quantity of slag, to the slag iron of the heat whether go out to the greatest extent into
Row judgement.The practical iron of the heat is 940.6t, and theoretical iron is 996t, and the two ratio is 94.4% < 95%, is judged as iron
Do not go out to the greatest extent.Actual quantity of slag is 259t, and the theoretical quantity of slag is 287t, and the two ratio is 90.2% < 95%, is judged as that slag does not go out to the greatest extent.By
Do not go out to the greatest extent in slag iron, then next heat beats tapping outlet in advance, reduces the disconnected slag time, guarantees that slag iron goes out to the greatest extent;
It above are only and preferred embodiments of the present invention are illustrated, above-mentioned technical characteristic can form multiple hairs in any combination
Bright example scheme.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, if use the improvement for the various unsubstantialities that conception and technical scheme of the invention carry out, or it is not improved will
Conception and technical scheme of the invention directly apply to other occasions, within the scope of the present invention.
Claims (10)
1. whether a kind of go out most device, including blast-furnace body and iron mouth and hot-metal ladle and carriage for rational judgment Blast furnace slag,
Iron hook and slag hook are correspondingly arranged at the iron mouth, hot-metal ladle and carriage corresponds to iron hook setting, it is characterised in that: further include that grain slag turns
Drum, grain slag conveyor belt and slag storehouse, one end of the water slag drum correspond to the setting of slag hook, and the other end of water slag drum corresponds to water
The setting of slag conveyor belt, grain slag conveyor belt are equipped with the weighing belt for weighing, and slag storehouse is correspondingly arranged at grain slag conveyor belt
Lower section.
2. whether going out most device for rational judgment Blast furnace slag as described in claim 1, it is characterised in that: the grain slag is defeated
Sending belt includes No. three belts of No. two belts of grain slag No.1 belt, grain slag and grain slag set gradually, the grain slag No.1 skin
Band is connected with water slag drum, No. three belts of grain slag correspond to slag storehouse setting, No. three belts of grain slag be higher than grain slag No.1 belt and its
Between by No. two belts of grain slag be connected.
3. whether going out most device for rational judgment Blast furnace slag as described in claim 1, it is characterised in that: further include transport
Railway, the hot-metal ladle and carriage are movably located on transport railway by track scale.
4. whether going out most device for rational judgment Blast furnace slag as described in claim 1, it is characterised in that: the iron hook and
Slag hook is located at the outer end of iron mouth, and slag hook is located at the top of iron hook.
5. whether a kind of rational judgment Blast furnace slag goes out most method, it is characterised in that: the described method comprises the following steps:.
Step 1: the record of tapping duration:
After blast furnace (1) beats tapping outlet (2), the heat opening time is recorded, molten iron is with clinker after skimming tool separates, and molten iron is through iron
Ditch (8) flows into the hot-metal ladle and carriage (11) in transport railway (9), and clinker is through slag runner (3), and rear punching enters water slag drum (4), percutaneously
Band (5) is transported to slag storehouse (7);After iron mouth (2) is blocked up, record is blocked up the time;
Step 2: the metering of iron out:
The attachment rail weighing apparatus (10) in transport railway (9), measures the self weight m of hot-metal ladle and carriage during tappingTankWith it is total after dress iron
Weight mAlways;
Step 3: the metering of slag discharge amount:
No.1 is installed respectively on No. three belts (503) that grain slag goes out the No.1 belt (501) of rotary drum (4) and reaches slag storehouse (7)
Belt weighing belt (601) and No. three belt weighing belts (602) measure the slag discharge amount m of two weighing belt positions during tapping1
And m2;
Step 4: the measurement of grain slag moisture content:
Respectively in the No.1 belt weighing belt (601) of installation and No. three belt weighing belt (602) positions, slag specimen sample is repeatedly taken,
Weigh weight wIt is wet;Weight w is weighed after dryingIt is dry, then sample moisture content η=(w can be calculatedIt is wet-wIt is dry)/wIt is wet, take multiple samples
Average value, the as grain slag moisture content of the weighing belt position;According to said method, the grain slag water of two weighing belt positions is determined
Divide content η1And η2;
Step 5: the calculating for iron of slagging tap:
According to the variable of iron out and slag discharge amount, grain slag moisture content and grain slag coefficient φ, the heat can be calculated
Iron is ∑ (m outAlways-mTank), slag discharge amount is (m1-m1·η1+m2-m2·η2)/φ;
Step 6: the calculating of theoretical iron and the theoretical quantity of slag;
According to the tapping duration of the heat, charge number × every batch of material theory in theoretical iron=heat tapping duration is calculated
Iron, the theoretical quantity of slag=theory iron × core material residue ratio;
Step 7: whether Blast furnace slag goes out most judgement:
It according to the variable of slag iron, is compared with theoretical iron, the theoretical quantity of slag, judges whether the slag iron of the heat goes out to the greatest extent;
If practical iron < theory iron × 95%, it is judged as that iron does not go out to the greatest extent;If the actual quantity of slag < theory quantity of slag × 95%, is judged as slag
Do not go out to the greatest extent;Iron does not go out to the greatest extent if it exists or slag does not go out most situation, then next heat beats tapping outlet than the predetermined time in advance.
6. whether rational judgment Blast furnace slag as claimed in claim 5 goes out most method, it is characterised in that: in the step 2
Weighing belt is once verified daily in non-tapping.
7. whether rational judgment Blast furnace slag as claimed in claim 5 goes out most method, it is characterised in that: high in the step 3
Furnace clinker flows into Punched box by slag runner, the high pressure water flow water quenching punching sprayed through Punched box at grain slag, through water slag groove, communicating pipe into
Enter rotary drum distributor, is most transported into slag storehouse through grain slag belt afterwards.
8. whether rational judgment Blast furnace slag as claimed in claim 5 goes out most method, it is characterised in that: in the step 4
Grain slag coefficientIncrease coefficient at the quality of grain slag through high pressure water flow water quenching punching for blast-furnace slag, is taken according to knowhow formula
1.2-1.4。
9. whether rational judgment Blast furnace slag as claimed in claim 5 goes out most method, it is characterised in that: in the step 5
Charge number in the heat tapping duration is by Research for Feeding Raw Materials System automatic gauge.
10. whether rational judgment Blast furnace slag as claimed in claim 5 goes out most method, it is characterised in that: in the step 5
The theoretical iron of every batch of material, core material residue ratio be with material composition, materials structure for basic data, according to mass conservation law
MaterialBalance Computation obtains.
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CN112916846A (en) * | 2021-03-02 | 2021-06-08 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling iron ladle |
CN113108614A (en) * | 2021-04-13 | 2021-07-13 | 中国恩菲工程技术有限公司 | Method and device for controlling reaction furnace, medium and electronic equipment |
CN115044725A (en) * | 2022-07-14 | 2022-09-13 | 广东韶钢松山股份有限公司 | Blast furnace taphole control method, device, equipment and storage medium |
CN115491451A (en) * | 2022-09-23 | 2022-12-20 | 中冶京诚工程技术有限公司 | Intelligent tapping control system and method |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112916846A (en) * | 2021-03-02 | 2021-06-08 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling iron ladle |
CN113108614A (en) * | 2021-04-13 | 2021-07-13 | 中国恩菲工程技术有限公司 | Method and device for controlling reaction furnace, medium and electronic equipment |
CN113108614B (en) * | 2021-04-13 | 2022-06-28 | 中国恩菲工程技术有限公司 | Method and device for controlling reaction furnace, medium and electronic equipment |
CN115044725A (en) * | 2022-07-14 | 2022-09-13 | 广东韶钢松山股份有限公司 | Blast furnace taphole control method, device, equipment and storage medium |
CN115491451A (en) * | 2022-09-23 | 2022-12-20 | 中冶京诚工程技术有限公司 | Intelligent tapping control system and method |
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