CN101727109A - Method for controlling filling quantity of slag-iron mixed molten liquid in ladle of ladle car - Google Patents
Method for controlling filling quantity of slag-iron mixed molten liquid in ladle of ladle car Download PDFInfo
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- CN101727109A CN101727109A CN200810202035A CN200810202035A CN101727109A CN 101727109 A CN101727109 A CN 101727109A CN 200810202035 A CN200810202035 A CN 200810202035A CN 200810202035 A CN200810202035 A CN 200810202035A CN 101727109 A CN101727109 A CN 101727109A
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Abstract
The invention relates to a method for controlling the filling quantity of slag-iron mixed molten liquid in a ladle when molten iron is filled into a ladle car from a metallurgical blast furnace tap hole. The control method comprises the following steps of: obtaining the gross weight of the ladle car through a weighing type weight detecting device, and then obtaining the real-time weight of the slag-iron mixed molten liquid in the ladle through a series of computations; obtaining the liquid level of the slag-iron mixed molten liquid in the ladle through the detection of a molten iron liquid level detecting device, and further computing the real-time volume of the slag-iron mixed molten liquid in the ladle; and then further computing the slag-iron proportion and the slag-iron weight of the slag-iron mixed molten liquid in the ladle by utilizing the real-time weight and volume of the slag-iron mixed molten liquid in the ladle so as to control the filling quantity of the slag-iron mixed molten liquid in the ladle. The automatic detection count for the used times of the ladle of the ladle car is introduced into computation, and a ladle volume increment parameter and a ladle car tare parameter under the specific used times of the ladle are obtained to participate in the computation, so that a computed result is more accurate. The invention enables the filling quantity of the ladle to be more accurate.
Description
Technical field
The present invention relates to the metallurgy high furnace tapping hole when hot-metal ladle and carriage can molten iron, to the control method of hot-metal bottle slag-iron mixed molten liquid can amount, this control method considered in the slag-iron mixed molten liquid in ladle of ladle car slag iron than and weight separately.
Background technology
Existing blast-melted tank car in order to control the molten iron amount of pouring in the hot-metal bottle on the hot-metal ladle and carriage, generally adopts two kinds of measuring methods: weight of molten iron detection technique and molten iron level detection technology when carrying out the molten iron can.
The weight of molten iron detection technique is that a track scale is installed on the track of the hot-metal ladle and carriage parking spot below the blast-melted can point.Hot-metal ladle and carriage is parked on the track scale after entering blast-melted can point, and operating personnel carry out the molten iron can then with the weight peeling that this moment, scale got.Along with constantly pouring into of molten iron, the weight that the track weigh gets constantly increases, and when treating that weight that the track weigh gets arrives certain numerical value, thinks that promptly molten iron has been poured into ratings.This method has following several problem in actual use: the hot-metal bottle when 1, hot-metal ladle and carriage arrives blast-melted can point beginning can molten iron is slack tank not necessarily, sometimes also remain a lot of molten iron in the hot-metal bottle, have a strong impact on computational accuracy after the weight peeling of this moment, even cause when calculating molten iron can weight of molten iron no show rated weight, actual molten iron liquid level has overflowed a jar mouth.2, pour into the molten iron very high molten iron of iron-holder not necessarily in the hot-metal bottle during molten iron can, sometimes pour in the molten iron in the hot-metal bottle and contain a large amount of scums, because the proportion of scum is less, the slag-iron mixed molten liquid very light in weight of this moment, when causing molten iron can weight no show rated weight, actual molten iron liquid level has overflowed a jar mouth.3, ladle lining is to adopt anti-material to be built into, and along with the increase hot-metal bottle liner of anti-material of hot-metal bottle access times can progressively corrode, causes the tare weight of hot-metal ladle and carriage and volume-variation to influence relation between weight of molten iron and liquid level.For above-mentioned reasons, every occasion of utilizing the weighing control technology to carry out the molten iron can for the safety of molten iron can, all needs the configuration personnel to observe molten iron filling liquid level situation, basically based on manual observation now.
Molten iron level detection technology is, a depth finding device is installed in position above blast-melted can point, as Chinese patent application number: 200510028317.7 " torpedo tank car molten iron liquid surface measuring method and device " and Chinese patent application number: " torpedo hot metal mixer car microwave molten iron liquid level meter microwave head " described microwave molten iron liquid level meter of 200320115206.6, or otherwise detect the device of molten iron liquid level, obtain jar true altitude of interior slag-iron mixed molten liquid liquid level with this.This with detecting the method that the molten iron liquid level carries out the molten iron filling control, though contain a large amount of scum very light in weight owing in the slag-iron mixed molten liquid in the time of can avoiding using the weighing mode, cause no show rated weight molten iron liquid level just to overflow jar phenomenon of mouth, but owing to use the method for slag-iron mixed molten liquid level control (LC) not have weight concept, the level control (LC) that can only make the slag-iron mixed molten liquid can is at same specified altitude, pouring into how much real molten iron content has to control in the interior slag-iron mixed molten liquid of hot-metal bottle, often is not too much to be exactly very few.Add the liner of anti-material the in the hot-metal bottle jar, because increasing of hot-metal bottle access times can corrode gradually, jar internal volume also can be become greatly thereupon, and the slag-iron mixed molten liquid level control (LC) method that adopts same specified altitude will produce bigger error in the control of molten iron can amount.
Though in Chinese patent application number: in 200610147760.0 " molten iron loading amount control method of ironcored ladle car ", introduced the level control (LC) that the liner of anti-material erosion amount in the hot-metal bottle jar carries out the molten iron can, remedied the influence that the liner of anti-material variation causes filling liquid level in the hot-metal bottle jar to a certain extent, but it is irrelevant with the proportion and the weight of slag-iron mixed molten liquid after all, still be a kind of molten iron filling control method eventually based on level detection, in slag-iron mixed molten liquid proportion variation occasion greatly, still there is very big error in molten iron content real in the slag-iron mixed molten liquid.The error of real molten iron content in the slag-iron mixed molten liquid in the hot-metal bottle that above-mentioned the whole bag of tricks causes, result will certainly influence the operating efficiency and the production cost of operation down.
Summary of the invention
The object of the present invention is to provide a kind of slag-iron mixed molten liquid in ladle of ladle car method for controlling filling quantity, this control method is by to the slag iron ratio of slag-iron mixed molten liquid in the hot-metal bottle and slag, iron Weight Calculation, make hot-metal bottle can amount more accurate, improved the operating efficiency of next procedure and reduced production cost.
The present invention is achieved in that a kind of slag-iron mixed molten liquid in ladle of ladle car method for controlling filling quantity, the steps include:
The 1st step, the liner physical dimension when making, the internal capacity when calculating each height of new hot-metal bottle according to the hot-metal bottle of hot-metal ladle and carriage;
In the 2nd step, each molten iron is irritated the can number of times of car hot-metal bottle and add up;
The 3rd step, the parameter that inner anti-material lining under the hot-metal ladle and carriage hot-metal bottle difference can number of times corrodes is added up, obtain the corresponding relation of inner anti-material lining of hot-metal bottle and can number of times;
In the 4th step, adopt at each molten iron can point installation Weighting type Weight detecting device and obtain the real-time gravimetric value of tank car;
The 5th step, real-time weight when going on foot the molten iron can that obtains according to the 4th, and the can number of times of this jar of detection record number hot-metal ladle and carriage hot-metal bottle, corresponding relation with anti-material lining erosion under the can number of times that has obtained in advance, carrying out the compensation of hot-metal bottle tare weight calculates, detect the calculating tare weight that the real-time gross weight obtain hot-metal ladle and carriage deducts hot-metal ladle and carriage with the 4th step again, obtain the weight W of the real-time slag-iron mixed molten liquid under this jar number, this number of times, this tank car general assembly (TW);
In the 6th step, adopt the molten iron liquid level sensor to obtain the fill level of real-time slag-iron mixed molten liquid in jar;
In the 7th step, with the corresponding relation that anti-material lining under the can number of times that has obtained in advance corrodes, the internal capacity that carries out under this height of hot-metal bottle calculates, and obtains the volume V of real-time slag-iron mixed molten liquid;
The 8th step, the real-time slag-iron mixed molten liquid weight W and the 7th that adopted for the 5th step obtained goes on foot the real-time slag-iron mixed molten liquid volume V that obtains, according to the proportion of known slag solution and ferrous solution, calculate in the hot-metal bottle ratio and the quantity of iron liquation and slag liquation in the slag-iron mixed molten liquid; Its computing formula is:
W
X＝A*X?????????????(1)
W
Y＝B*Y?????????????(2)
W
X+W
Y＝W????????????(3)
X+Y＝V??????????????(4)
H＝W
Y/W
X????????????(5)
In the formula: A: the proportion of iron liquation;
B: the proportion of slag liquation;
W
X: iron liquation weight;
X: iron liquation volume;
W
Y: slag liquation weight;
Y: slag liquation volume;
W: the real-time weight of slag-iron mixed molten liquid;
V: the real-time volume of slag-iron mixed molten liquid;
H: slag iron ratio;
The 9th step, continuous increase variation along with actual measurement tank car weight and slag-iron mixed molten liquid volume, s operation control equipment constantly repeats the aforementioned calculation process according to new weight and liquation volume data, the new slag that pours into jar interior slag-iron mixed molten liquid, iron ratio and weight separately are provided in real time, thus the can amount of slag-iron mixed molten liquid in the control hot-metal bottle.
The present invention obtains the gross weight of hot-metal ladle and carriage by the Weighting type Weight detecting device, obtains the real-time weight of jar interior slag-iron mixed molten liquid again by series of computation; Obtain the liquid level of jar interior slag-iron mixed molten liquid with the detection of molten iron liquid level sensor, thereby calculate the real-time volume of jar interior slag-iron mixed molten liquid; The real-time weight and volume of slag-iron mixed molten liquid in utilizing again jar further calculates the weight of the slag iron ratio of jar interior slag-iron mixed molten liquid and slag, iron, thereby controls the can amount of the interior slag-iron mixed molten liquid of hot-metal bottle.The access times of having introduced in the calculating the hot-metal bottle of hot-metal ladle and carriage carry out automatic detection statistics, and the incrementation parameter and the tank car tare weight parameter that obtain the following jar internal volume of the specific access times of hot-metal bottle participate in calculating, and make result of calculation more accurate.
The present invention can calculate the iron liquation and the slag liquation weight of slag-iron mixed molten liquid in the hot-metal bottle exactly, and slag iron liquation ratio, thereby reaches following purpose: the can amount of accurately controlling the iron liquation according to technological requirement; Determine a jar interior quantity of slag, in time point out scarfing cinder, prevent that too much slag from taking a jar internal volume, influence the normal can of iron liquation; Determine slag-iron mixed molten liquid can amount, prevent that the can slag-iron mixed molten liquid is excessive.
The invention solves the slag iron ratio of slag-iron mixed molten liquid in the jar that prior art do not have to solve and slag, iron weight issue, make hot-metal bottle can amount more accurate, improved the operating efficiency of next procedure and reduced production cost by the present invention.
Description of drawings
Fig. 1 is the steering logic figure of slag-iron mixed molten liquid in ladle of ladle car method for controlling filling quantity of the present invention;
Fig. 2 is for implementing the device synoptic diagram of slag-iron mixed molten liquid in ladle of ladle car method for controlling filling quantity.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, Fig. 2, a kind of slag-iron mixed molten liquid in ladle of ladle car method for controlling filling quantity, it follows these steps to carry out:
1, the volume calculations of each height of the inside of new hot-metal bottle
The volume calculations of inner each height of new hot-metal bottle utilizes existing general calculation method to finish.Though the hot-metal bottle shape and the volume of each tame enterprise hot-metal ladle and carriage are had nothing in common with each other as required, but it generally is identical using the hot-metal ladle and carriage hot-metal bottle in the tame enterprise, and each hot-metal ladle and carriage hot-metal bottle all has numbering, if inconsistently also can calculate respectively.Drawing physical dimension when making according to hot-metal bottle can obtain inner each actual volume highly by common calculating.Certainly when reality is used according to employed calculation control equipment performance difference, both can with each the height the computed volume result be stored in database in advance, also can directly computing formula be positioned in the calculation control equipment.
2, obtain hot-metal ladle and carriage hot-metal bottle numbering and number of times to be filled at each molten iron can point
Can use any method that can obtain hot-metal ladle and carriage hot-metal bottle to be filled numbering and number of times, as manually obtaining the method in the input control apparatus, and the installing isolated plant obtains the method in the input control apparatus etc. automatically again.Method of using in " hot-metal ladle and carriage location and the license number detection method and the device " of Chinese patent application numbers 200610023410.3 for example, the license number of the location situation of hot-metal ladle and carriage and hot-metal ladle and carriage is sent in the database of opertaing device of molten iron filling control system, carried out adding up, add up, preserving of license number record and can number of times.A plurality of molten iron can points take to communicate by letter method of networking, hot-metal ladle and carriage hot-metal bottle numbering that each molten iron can point is obtained respectively and number of times unification are delivered to system database and are handled.
3, obtain the corresponding relation parameter of hot-metal bottle inner anti-material lining erosion and can number of times
The fundamental purpose of obtaining the corresponding relation of hot-metal bottle inner anti-material lining erosion and can number of times is can calculate hot-metal ladle and carriage actual volume on the real tare under the different access times and each height of hot-metal bottle by this corresponding relation parameter.Obtain the process of the inner anti-material lining of hot-metal bottle erosion condition, be one and seek the process that hot-metal bottle inner anti-material lining under different access times corrodes rule.Concrete grammar can be referring to disclosed method in the Chinese patent 200610147760.0 " molten iron loading amount control method of ironcored ladle car ", and the inside anti-material lining erosion condition under the different access times of hot-metal bottle carries out record respectively according to access times.The inner anti-material lining of record hot-metal bottle is concluded calculating at the erosion condition of differing heights to the record data of some arrays, and the statistic record array is many more, and its result of calculation is approaching more general ubiquity rule just, and it is just approaching more true that the anti-material lining that obtains corrodes parameter.
4, obtain the tank car gravimetric value
At each molten iron can point the Weighting type Weight detecting device is installed, hot-metal ladle and carriage is parked in Weighting type Weight detecting device top when carrying out the molten iron can, and this moment, Weight detecting device detected the real-time general assembly (TW) that obtains hot-metal ladle and carriage.
5, calculate the weight W of slag-iron mixed molten liquid
The weight of slag-iron mixed molten liquid equals to detect the real-time gross weight that obtains hot-metal ladle and carriage and deducts the hot-metal bottle tare weight.Can number of times according to the hot-metal ladle and carriage hot-metal bottle of this jar of detection record number with the corresponding relation that anti-material lining under the can number of times that has obtained in advance corrodes, carries out the compensation of hot-metal bottle tare weight and calculates.The real-time gross weight that obtains hot-metal ladle and carriage with detection deducts the calculating tare weight (real tare) of hot-metal ladle and carriage, obtains the weight W of the real-time slag-iron mixed molten liquid under this hot-metal ladle and carriage general assembly (TW).
6, obtain the fill level of slag-iron mixed molten liquid in jar
Obtain the fill level of real-time slag-iron mixed molten liquid in jar with the molten iron liquid level sensor.A depth finding device is installed in position above blast-melted can point, as Chinese patent application number: 200510028317.7 " torpedo tank car molten iron liquid surface measuring method and device " and Chinese patent application number: " torpedo hot metal mixer car microwave molten iron liquid level meter microwave head " described microwave molten iron liquid level meter of 200320115206.6, or otherwise detect the device of molten iron liquid level, obtain jar true altitude of interior slag-iron mixed molten liquid liquid level with this.
7, calculate the volume V of slag-iron mixed molten liquid
The volume of slag-iron mixed molten liquid in the hot-metal bottle, promptly jar interior slag-iron mixed molten liquid liquid level true altitude is to the volume of hot-metal bottle base section.The true altitude of slag-iron mixed molten liquid liquid level in jar can directly obtain with the detection of molten iron liquid level sensor.The liquid level true altitude is to the volume of hot-metal bottle base section, corresponding relation with anti-material lining erosion under the can number of times that has obtained in advance, the internal capacity that carries out under this height of hot-metal bottle calculates, and concrete computing method can be as Chinese patent application number: 200610147760.0; The method of using in " molten iron loading amount control method of ironcored ladle car ".The internal capacity of hot-metal bottle under this real-time height, i.e. the volume V of slag-iron mixed molten liquid.
8, the ratio and the quantity of iron liquation and slag liquation are calculated in the interior slag-iron mixed molten liquid of hot-metal bottle
Detect, calculate the real-time weight W of slag-iron mixed molten liquid and in real time behind the volume V with said method, can obtain in the hot-metal bottle ratio and the weight of iron liquation and slag liquation in the slag-iron mixed molten liquid by mathematical computations.
Specifically can calculate by following formula:
Known: the proportion of iron liquation is A; The proportion of slag liquation is B;
Then: W
X=A*X (1)
W
Y＝B*Y??????????????(2)
W
X+W
Y＝W?????????????(3)
X+Y＝V???????????????(4)
H＝W
Y/W
X?????????????(5)
In the formula: W
X: iron liquation weight;
X: iron liquation volume;
W
Y: slag liquation weight;
Y: slag liquation volume;
W: the real-time weight of slag-iron mixed molten liquid;
V: the real-time volume of slag-iron mixed molten liquid;
H: slag iron ratio;
In whole molten iron pouring process, continuous increase variation along with actual measurement tank car weight and slag-iron mixed molten liquid volume, s operation control equipment constantly repeats the aforementioned calculation process according to new weight and liquation volume data, the new slag that pours into jar interior slag-iron mixed molten liquid, iron ratio and weight separately are provided in real time, thus the can amount of slag-iron mixed molten liquid in the control hot-metal bottle.
Embodiment
On the same position of each hot-metal ladle and carriage, adorn a double license number sign board in location, can detect to read one of the garage track limit of each molten iron can point installing and be installed in the pick-up unit that license number sign board information is held concurrently in the location on the hot-metal ladle and carriage, see number of patent application 200610023410.3 " hot-metal ladle and carriage location and license number detection method and device " for details.Bottom at each molten iron can point hot-metal ladle and carriage parking spot is equipped with a track scale, is used for hot-metal ladle and carriage and weighs.Top at each molten iron can point hot-metal ladle and carriage parking spot is equipped with a microwave depth detector, is used to detect the liquid level of slag-iron mixed molten liquid in the hot-metal ladle and carriage hot-metal bottle.The s operation control equipment of molten iron bulking system is mainly Siemens S7 series of PLC.The hot-metal ladle and carriage new car tare weight that present embodiment uses is 320t, and specified molten iron can amount is 320t, and to serve as a contrast specified access times be 1000 times to an anti-material in jar, use 1000 times after the hot-metal ladle and carriage tare weight be 287t.The hot-metal ladle and carriage molten iron filling liquid level that newly comes into operation slag-iron mixed molten liquid weight in the time of 2.40 meters is 320t; Hot-metal ladle and carriage molten iron filling liquid level slag-iron mixed molten liquid weight in the time of 2.40 meters is 370t when using 1000 times; During 1300 ℃ of iron liquation proportions is 6.3t/m
3During 1300 ℃ of slag liquation proportions is 1.9t/m
3It heavily is 4.34t/m that anti-material contrasts
3According to hot-metal ladle and carriage fabrication drawing computed altitude/PRESSURE-VOLUME RELATION partial data such as table 1.
In the present embodiment because the shape of hot-metal bottle determines jar internal volume and highly non-linear proportionate relationship.If also can finish, but need to use a plurality of calculating formulas with real-time Calculation Method.Use calculated in advance in the present embodiment, imported the method for s operation control device databases then.According to the accuracy requirement of concrete use, present embodiment has adopted the corresponding volume data of per 1 cm height.Certainly according to the concrete accuracy requirement of using, can reduce or increase.
Table 1
| Height m | Volume m 3 | Height m | Volume m 3 | Height m | Volume m 3 | Height m | Volume m 3 | Height m | Volume m 3 |
| ??0.12 | ??1.626 | ??0.71 | ??11.613 | ??1.00 | ??18.470 | ??1.80 | ??38.244 | ??2.31 | ??47.087 |
| ??0.13 | ??1.735 | ??0.72 | ??11.837 | ??1.01 | ??18.719 | ??1.81 | ??38.461 | ??2.32 | ??47.225 |
| ??0.14 | ??1.847 | ??0.73 | ??12.062 | ??1.02 | ??18.970 | ??1.82 | ??38.678 | ??2.33 | ??47.362 |
| ??0.15 | ??1.961 | ??0.74 | ??12.288 | ??1.03 | ??19.221 | ??1.83 | ??38.883 | ??2.34 | ??47.498 |
| Height m | Volume m 3 | Height m | Volume m 3 | Height m | Volume m 3 | Height m | Volume m 3 | Height m | Volume m 3 |
| ??0.16 | ??2.077 | ??0.75 | ??12.515 | ??1.04 | ??19.473 | ??1.84 | ??39.085 | ??2.35 | ??47.632 |
| ??0.17 | ??2.195 | ??0.76 | ??12.743 | ??1.05 | ??19.726 | ??1.85 | ??39.286 | ??2.36 | ??47.766 |
| ??0.18 | ??2.315 | ??0.77 | ??12.972 | ??1.06 | ??19.979 | ??1.86 | ??39.485 | ??2.37 | ??47.897 |
| ??0.19 | ??2.437 | ??0.78 | ??13.202 | ??1.07 | ??20.234 | ??1.87 | ??39.683 | ??2.38 | ??48.028 |
In the present embodiment to increase the processing that jar interior anti-material lining erosion volume done following method of hot-metal bottle owing to access times.The every use extracted specific 3 jars as calibration 100 times and done test, find the basic and linear ratio of access times of anti-material lining erosion degree, but anti-material lining erosion volume is in height inequality in jar, according to the data that test is obtained 1000 times the time, make height and corrode the volume relationship partial data and see Table 2.Wherein: height is when 2.40m, and anti-material lining erosion cumulative volume is 7.600m when using 1000 times
3
In the present embodiment because factors such as the shape of hot-metal bottle, jar interior anti-material lining material and filling process determine that anti-material serves as a contrast and corrodes volume and highly non-linear proportionate relationship in jar.If also can finish, but need to use a plurality of calculating formulas with real-time Calculation Method.Use calculated in advance in embodiments of the present invention, imported the method for s operation control device databases then.According to the accuracy requirement of concrete use, the embodiment of the invention has adopted corresponding one of per 1 cm height to corrode volume data.Certainly according to the concrete accuracy requirement of using, can reduce or increase.
Table 2
| Height m | Corrode volume m 3 | Highly | Corrode volume m 3 | Highly | Corrode volume m 3 | Highly | Corrode volume m 3 | Highly | Corrode volume m 3 |
| ??0.12 | ??0.254 | ??0.71 | ??2.116 | ??1.00 | ??4.276 | ??1.80 | ??7.237 | ??2.31 | ??7.450 |
| ??0.13 | ??0.271 | ??0.72 | ??2.187 | ??1.01 | ??4.355 | ??1.81 | ??7.256 | ??2.32 | ??7.453 |
| ??0.14 | ??0.288 | ??0.73 | ??2.258 | ??1.02 | ??4.434 | ??1.82 | ??7.274 | ??2.33 | ??7.456 |
| ??0.15 | ??0.306 | ??0.74 | ??2.329 | ??1.03 | ??4.513 | ??1.83 | ??7.276 | ??2.34 | ??7.458 |
| ??0.16 | ??0.324 | ??0.75 | ??2.401 | ??1.04 | ??4.592 | ??1.84 | ??7.281 | ??2.35 | ??7.460 |
| ??0.17 | ??0.342 | ??0.76 | ??2.472 | ??1.05 | ??4.672 | ??1.85 | ??7.286 | ??2.36 | ??7.462 |
| ??0.18 | ??0.361 | ??0.77 | ??2.544 | ??1.06 | ??4.752 | ??1.86 | ??7.290 | ??2.37 | ??7.464 |
| ??0.19 | ??0.380 | ??0.78 | ??2.617 | ??1.07 | ??4.832 | ??1.87 | ??7.295 | ??2.38 | ??7.466 |
The hot-metal ladle and carriage can weight of the embodiment of the invention is calculated molten iron liquid level process: referring to Fig. 1, Fig. 2:
Driver operation power vehicle band hot-metal ladle and carriage and is advanced, and adopts during can molten iron position low speed to advance below near blast furnace iron notch.Hot-metal ladle and carriage when the power vehicle band and advance, be close to the distance of regulation to being installed in the license number sign board of holding concurrently of location on sign board read head on the ground rail railway roadbed and the hot-metal ladle and carriage, the sign board read head receives location on the car license number sign board signal of holding concurrently.This license number and the accurate signal of off-position are sent into the s operation control equipment of molten iron bulking system, carry out the license number of molten iron filling control and hot-metal ladle and carriage, the management statistics of can number of times.
After the s operation control equipment of molten iron bulking system received that the hot-metal ladle and carriage off-position accurately reaches license number, beginning was carried out the molten iron can in hot-metal bottle.In the molten iron pouring process of hot-metal ladle and carriage, be installed in track scale on the ground rail of hot-metal ladle and carriage below in the molten iron pouring process, constantly will claim the tank car weight data deliver in the s operation control equipment, the microwave depth finding device that is installed in the hot-metal ladle and carriage top is constantly delivered to the tank level data that detect in the s operation control equipment in the molten iron pouring process.The actual measurement liquid level data that actual measurement tank car weight that s operation control equipment utilization track scale is sent here and microwave depth finding device are sent here carry out having poured in the hot-metal bottle slag, iron ratio and the weight calculating separately of slag-iron mixed molten liquid.6.3 tons/meter of the proportions of known iron liquation
3The proportion of slag liquation is 1.9 tons/meter
3Account form is as follows:
If receive that the hot-metal ladle and carriage license number is No. 58; The tank car weight that records is 408.9 tons; Recording the liquid level that pours into slag-iron mixed molten liquid is 1.06 meters; The cumulative number that s operation control equipment finds No. 58 hot-metal ladle and carriages to use in database is 650 times.Find height and corrode the volume relationship array in the s operation control device databases, the inner anti-material lining of hot-metal bottle that each parameter in the array is calculated to be 650 correspondences respectively corrodes volume, corrodes parameter N/1000*650 in volume=arrays 650 times; To calculate 650 times each highly corrode each parameter in the volume array again, respectively with new jar of computed altitude/PRESSURE-VOLUME RELATION array in each parameter by the addition respectively of corresponding height, jar inner height/PRESSURE-VOLUME RELATION array when obtaining using 650 times.
It is 7.6/1000*650 that the anti-material of jar liner of this moment corrodes volume;
Calculate the tare weight=320-7.6/1000*650*4.34=298.56 ton of tank car this moment;
Calculate slag-iron mixed molten liquid weight W=408.9-298.56=110.34 ton;
Calculate the jar internal volume V=19.979+4.752/1000*650=23.0678m of 1.06 meters liquid levels
3(table look-up 1 and table 2 in 1.06 meters the time volume and corrode volume);
Calculate the slag that poured into slag-iron mixed molten liquid in the hot-metal bottle, iron ratio and weight separately according to formula (1), (2) (3), (4), (5);
Wherein: the proportion A=6.3 ton/rice of iron liquation
3The proportion B=1.9 ton/rice of slag liquation
3
The real-time weight W of slag-iron mixed molten liquid=110.34 tons;
The real-time volume V=23.0678 of slag-iron mixed molten liquid rice
3
Substitution formula (3), (4):
6.3X+1.9Y＝110.34；
X+Y＝23.0678；
Separating above-mentioned two formulas gets:
Iron liquation volume X=15.1162m
3
Slag liquation volume Y=7.9516m
3
Substitution formula (1), (2), (5) get:
Iron liquation weight W
X=6.3*15.1162=95.232 ton;
Slag liquation weight W
Y=1.9*7.9516=15.108 ton;
Slag iron liquation compares H=W
Y/ W
X=15.108/95.232;
Along with constantly pouring into of slag-iron mixed molten liquid, tank car weight increases gradually, having poured into the slag-iron mixed molten liquid liquid level in the hot-metal bottle also raises gradually, the liquid level data that actual measurement tank car weight data that molten iron filling control system constantly sends here according to Weighing apparatus and liquid level sensor are sent here, and the relevant data of database storing, poured into the slag of No. 58 car slag-iron mixed molten liquids, iron ratio and weight calculating separately, and result of calculation shown on display and deliver to control system and control, thereby the can amount of slag-iron mixed molten liquid in the control hot-metal bottle.
The present invention can calculate the iron liquation and the slag liquation weight of slag-iron mixed molten liquid in the hot-metal bottle exactly, and slag iron liquation ratio, thereby reaches following purpose: the can amount of accurately controlling the iron liquation according to technological requirement; Determine a jar interior quantity of slag, in time point out scarfing cinder, prevent that too much slag from taking a jar internal volume, influence the normal can of iron liquation; Determine slag-iron mixed molten liquid can amount, prevent that the can slag-iron mixed molten liquid is excessive etc.
Claims (1)
1. a slag-iron mixed molten liquid in ladle of ladle car method for controlling filling quantity the steps include:
The 1st step, the liner physical dimension when making, the internal capacity when calculating each height of new hot-metal bottle according to the hot-metal bottle of hot-metal ladle and carriage;
In the 2nd step, each molten iron is irritated the can number of times of car hot-metal bottle and add up;
The 3rd step, the parameter that inner anti-material lining under the hot-metal ladle and carriage hot-metal bottle difference can number of times corrodes is added up, obtain the corresponding relation of inner anti-material lining of hot-metal bottle and can number of times;
It is characterized in that:
In the 4th step, adopt at each molten iron can point installation Weighting type Weight detecting device and obtain the real-time gravimetric value of tank car;
The 5th step, real-time weight when going on foot the molten iron can that obtains according to the 4th, and the can number of times of this jar of detection record number hot-metal ladle and carriage hot-metal bottle, corresponding relation with anti-material lining erosion under the can number of times that has obtained in advance, carrying out the compensation of hot-metal bottle tare weight calculates, detect the calculating tare weight that the real-time gross weight obtain hot-metal ladle and carriage deducts hot-metal ladle and carriage with the 4th step again, obtain the weight W of the real-time slag-iron mixed molten liquid under this jar number, this number of times, this tank car general assembly (TW);
In the 6th step, adopt the molten iron liquid level sensor to obtain the fill level of real-time slag-iron mixed molten liquid in jar;
In the 7th step, with the corresponding relation that anti-material lining under the can number of times that has obtained in advance corrodes, the internal capacity that carries out under this height of hot-metal bottle calculates, and obtains the volume V of real-time slag-iron mixed molten liquid;
The 8th step, the real-time slag-iron mixed molten liquid weight W and the 7th that adopted for the 5th step obtained goes on foot the real-time slag-iron mixed molten liquid volume V that obtains, according to the proportion of known slag solution and ferrous solution, calculate in the hot-metal bottle ratio and the quantity of iron liquation and slag liquation in the slag-iron mixed molten liquid; Its computing formula is:
W
X＝A*X?????????????????(1)
W
Y＝B*Y?????????????????(2)
W
X+W
Y＝W????????????????(3)
X+Y＝V??????????????????(4)
H＝W
Y/W
X????????????????(5)
In the formula: A: the proportion of iron liquation;
B: the proportion of slag liquation;
W
X: iron liquation weight;
X: iron liquation volume;
W
Y: slag liquation weight;
Y: slag liquation volume;
W: the real-time weight of slag-iron mixed molten liquid;
V: the real-time volume of slag-iron mixed molten liquid;
H: slag iron ratio;
The 9th step, continuous increase variation along with actual measurement tank car weight and slag-iron mixed molten liquid volume, s operation control equipment constantly repeats the aforementioned calculation process according to new weight and liquation volume data, the new slag that pours into jar interior slag-iron mixed molten liquid, iron ratio and weight separately are provided in real time, thus the can amount of slag-iron mixed molten liquid in the control hot-metal bottle.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092239A (en) * | 2016-02-17 | 2017-08-25 | 宝山钢铁股份有限公司 | Blast furnace casting amount estimating device and method |
| CN114410860A (en) * | 2022-01-18 | 2022-04-29 | 山东钢铁集团永锋临港有限公司 | Molten iron charge control method based on measurement of liquid level meter under blast furnace |
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| AT365497B (en) * | 1980-03-05 | 1982-01-25 | Voest Alpine Ag | METHOD FOR DETERMINING THE QUANTITY OF SLAGS IN AN INTERMEDIATE VESSEL DURING CONTINUOUS CASTING, AND DEVICE FOR CARRYING OUT THE METHOD |
| CN100430698C (en) * | 2005-07-29 | 2008-11-05 | 宝山钢铁股份有限公司 | Torpedo tank car molten iron liquid surface measuring method and its device |
| CN101205564B (en) * | 2006-12-22 | 2011-04-13 | 宝山钢铁股份有限公司 | Molten iron loading amount control method of ironcored ladle car |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092239A (en) * | 2016-02-17 | 2017-08-25 | 宝山钢铁股份有限公司 | Blast furnace casting amount estimating device and method |
| CN107092239B (en) * | 2016-02-17 | 2020-03-06 | 宝山钢铁股份有限公司 | Blast furnace iron output estimation device and method |
| CN114410860A (en) * | 2022-01-18 | 2022-04-29 | 山东钢铁集团永锋临港有限公司 | Molten iron charge control method based on measurement of liquid level meter under blast furnace |
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