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 PDF

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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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slag
iron
belt
grain
blast furnace
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孙社生
郭其飞
杨佳龙
张明
黄世高
王锡涛
杨建�
徐川
吴宏亮
高鹏
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Maanshan Iron and Steel Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations

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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

Whether go out most devices and methods therefor for rational judgment Blast furnace slag
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.
CN201910676888.3A 2019-07-25 2019-07-25 Whether go out most devices and methods therefor for rational judgment Blast furnace slag Pending CN110283956A (en)

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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
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
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
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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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