CN103409569A - Method for controlling airflow distribution by utilizing furnace top infrared image - Google Patents
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Abstract
The invention relates to a method for controlling airflow distribution by utilizing a furnace top infrared image. the method comprises the following steps of: (1), obtaining and saving the furnace top infrared image; (2), identifying the mode of the furnace top infrared image; (3), establishing the corresponding relationship among centre airflow distribution, edge airflow distribution and image features; (4), judging current airflow distribution by utilizing a real-time image; (5), according to the conditions of the blast furnace, judging whether airflow distribution of a blast furnace needs to be adjusted, if necessary, adjusting airflow distribution, and carrying out the step (6); and (6), distributing materials of the blast furnace, wherein the main purpose is to control airflow change; in addition, according to the purpose of adjustment, a proper material distribution matrix is executed through a furnace top material distribution PLC (Programmable Logic Controller), so that the purpose of adjusting the furnace top coal airflow distribution of the blast furnace is reached. According to the method, control of furnace top airflow distribution is convenient; furthermore, the blast furnace can run more stably.
Description
Technical field
The present invention relates to blast furnace roof infrared imagery technique field, refer to particularly a kind of method of utilizing the furnace roof infrared image to control the air-flow distribution.
Technical background
Guarantee the stable and direct motion of blast furnace, just need to adjust in time according to the variation of the working of a furnace operation of blast furnace, the upper and lower part of the to the effect that blast furnace of blast furnace operating is adjusted, and the upper blast furnace adjustment is mainly adjusted air-flow by blast furnace material distribution and distributed.
At present, a lot of blast furnaces need to be by means of the furnace roof Infrared Image Information when carrying out cloth (furnace charge layout) adjustment, the furnace roof infrared image is that the variation along with the working of a furnace is changing at any time, the people is difficult to process at short notice the bulk information with " noise ", if infrared image can be carried out to necessary processing, just can utilize infrared image accurately to judge the distribution of blast furnace air-flow, thereby adjust foundation accurately is provided for the cloth of blast furnace.Realize this target, need to solve following problem, a problem is to select effective image: because blast furnace is that a quantity-produced is huge to flow reactor, the furnace roof infrared information is continually varying, need to be from continually varying furnace roof infrared image, automatically selecting representational air-flow patterns shape.Another problem is to process infrared image: the furnace roof infrared image of selecting processed, become exponentiate, and can be for blast furnace operating personnel parameter information directly.Another problem is the application Infrared Image Information: according to the requirement of blast furnace operating, by the rule changed between accumulation furnace roof blast furnace operating parameter and furnace roof infrared image, utilize the technology of pattern recognition, can assess at any time the changes in distribution of blast furnace air-flow, and automatically selected suitable cloth pattern with reference to former blast furnace adjustment experience, realize that really the closed loop of cloth in blast furnace operating is adjusted.
For the furnace roof infrared image, following several image processing method is arranged generally at present, a kind of is directly the image obtained to be play continuously, retain in case of necessity relevant video recording, a kind of is that image is carried out to painted processing, by other image-region of different grey-scale is composed with distinct colors, with different colors, represent different temperature ranges, conversion by this gray scale and color, the temperature distributing characteristic that can show more intuitively blast furnace roof, because the furnace roof image is in continuous change procedure, this simple image transitions is difficult to reflect change in process information, can not obtain real temperature distribution information.Document " Chen Lingkun, " China Steel industry nd Annual Meeting collection ", 2007, Chengdu " in inquired into a kind of technology that the image continuous-changing features is identified, the method be take and per hour is a time period, caught piece image in every 6 seconds, per hour can obtain 600 width images, by adding up the light and shade distribution characteristics of 600 width images, with curve, express the feature of image change in different time sections, utilize this feature can reflect the characteristics of variations in flow, by contrasting the difference of image continuous-changing features in two time periods, just can assess the trend of furnace roof variations in flow, for cloth, adjust foundation is provided.Actual furnace roof infrared image is a kind of synthetic image, each width image has all reflected the variations in flow of blast furnace center and peripheral simultaneously, yet, above-mentioned treatment process is that entire image is processed, do not distinguish edge and central gas stream to the contribution that image generates, be difficult to really reflect center and the relative variation that changes air-flow.
The existing method of processing the furnace roof infrared image, no matter be direct staining method, still all be difficult to the continuous changing condition of actual response center, edge air-flow to the pattern-recongnition method of entire image.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of furnace roof infrared image that utilizes to control the method that air-flow distributes, and the method has realized the accurate control of operation of blast furnace state.
For realizing this purpose, the furnace roof infrared image that utilizes that the present invention is designed is controlled the method that air-flow distributes, and it is characterized in that, it comprises the steps:
Step 1: absorb the infrared temperature distributed image of furnace roof charge level by the noctovisor that is arranged on blast furnace roof, and the infrared temperature distributed image of the furnace roof charge level of picked-up is kept in the computer of infrared image supervisory system;
Step 2: the feature extraction processing is carried out in the infrared temperature distribution to the furnace roof charge level, thereby obtain circular image corresponding to the blast furnace roof airflow state, the principle of processing is that the corresponding brightness of image of blast furnace temperature area that air-flow is large is high, the corresponding brightness of image in low furnace temperature zone that air-flow is little is low, then circular image is divided into to three parts of same core, in the middle of described circular image, roundlet represents the blast furnace roof central gas stream, in the middle of circular image, endless belt represents the poor air-flow endless belt of the middle ventilation property of blast furnace roof, and the circular image outer shroud represents the air-flow at blast furnace roof edge;
Step 3: circular image is carried out to filtering process, to remove due to the noise of a large amount of dusts that exist in blast furnace gas to the circular image stack;
Step 4: after filtering process, obtain the continuous modified-image of for some time, then in above-mentioned continually varying image, respectively above-mentioned circular image is carried out the processing of grey level histogram with three parts of core, again all circular image are all carried out to the pattern recognition of image with three subregions of core, the characteristic image that each is regional is found out, to form three typical image storehouses, the typical image in the typical image storehouse has reflected the change procedure that blast furnace roof central gas stream, middle endless belt air-flow, edge air-flow grow from weak to strong; The acquisition process of above-mentioned characteristic image is: at first each width circular image is carried out to the processing of histogram distribution, then set up the classification samples storehouse formed by above-mentioned all histograms, then the histogram distribution of take is standard, in the histogram of all processing, find out histogrammic distribution pattern, the corresponding image of these histogram distribution patterns is exactly characteristic image;
Step 5: the blast furnace temperature area corresponding brightness of image large according to air-flow is high, the low technology characteristics of the low furnace temperature corresponding brightness of image in zone that air-flow is little, set up the corresponding relation between blast furnace roof central gas stream, blast furnace roof middle air flow endless belt, blast furnace roof edge air-flow and typical image: the image in the typical image storehouse is in fact corresponding to the air-flow of varying strength, the distribution pattern of the N analogous column diagram obtained in step 4, represent the picture pattern that the brightness of N class strengthens gradually, the picture pattern that the brightness of above-mentioned N class strengthens gradually is as the foundation of carrying out Images Classification;
Step 6: the picture pattern that the above-mentioned N class brightness of usining strengthens gradually is as standard, all images that current M gathered in the time are classified, obtain respectively the quantity of every class image in blast furnace roof center, the middle endless belt of blast furnace roof, blast furnace roof edge, then the brightness of take is X-coordinate, the quantity of each class image of take is ordinate zou, obtain a curve, this curve has represented the frequency that in the M time, dissimilar image occurs, this frequency has reflected the difference of variations in flow, and the curve in different time sections just distributes corresponding to the variations in flow in the corresponding time period;
Step 7: whether normally judge whether to need the blast furnace variations in flow obtained in set-up procedure 6 to distribute according to the operation of blast furnace situation, if the operation of blast furnace situation is normal, maintain existing operating duty, if the operation of blast furnace situation is undesired, enter step 8;
Step 8: arrange PLC(Programmable Logic Controller, programmable logic controller at the furnace roof furnace charge) in, select corresponding burden distribution matrix, the blast furnace variations in flow is distributed and adjusts, make the operation of blast furnace situation reach normal.
Further, whether described operation of blast furnace situation is normally by slag crust degree of stability, blanking situation and the judgement of pressure surge situation.
Further, in the process that in described step 8, distribution is adjusted to the blast furnace variations in flow, the real-time change of blast furnace air-flow distributes and is obtained by step 1～6.
Further, in described step 1, the infrared temperature distributed image of furnace roof charge level is BMP(Bitmap, the image text form) bitmap format, resolving power is 726*540.
Further, in step 3, adopt bayes method to carry out filtering process to circular image.
Further, in described step 5 and step 6, histogrammic distribution pattern is 25 or 36 classes.
Further, in described step 6, the M time is one hour.
Further, described slag crust degree of stability is weighed by the fluctuation of cooling stave temperature, when the fluctuation range of cooling stave temperature is that 80～120 ℃, the every batch error between the blanking interval is within 1 minute and pressure surge when being less than above-mentioned three conditions of 0.006Mpa and meeting simultaneously, corresponding operation of blast furnace situation is normal, when above-mentioned three conditions had one not meet, corresponding operation of blast furnace situation had fluctuation.
The shortcoming of before the present invention has overcome, entire image having been processed, distinguish edge and central gas stream to the contribution that image generates, and really reflected center and the relative variation that changes air-flow.Utilize the image of real-time grasp shoot and the image in image library to mate, can obtain air-flow characteristic distributions in for some time, this air-flow characteristic distributions is out adjusted for blast furnace material distribution with the formal representation quantized, facilitate the control of top gas flow point cloth, and made operation of blast furnace more stable.
The accompanying drawing explanation
Fig. 1 is the fundamental diagram of the furnace roof infrared image measuring system that the present invention is based on.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment:
The blast furnace situation: the blast furnace of enforcement is 3200m
3, furnace roof is equipped with furnace roof infrared image detection module, infrared image processing module, air-flow control module (cloth PLC), and wherein furnace roof infrared image detection module has the feature that can detect the low temperature distribution, easy to maintenance, the performance comparative superiority.System hardware adopts import industrial computer and high-quality large color screen watch-dog, in computer, operation is high-quality import industrial control computer mainboard, various special functional interface boards are the plug and play interface model of the specialized computer compatibility of manufacturing of particular design, wherein thermometric is touched high-speed cruising on plate and multinomial functional operation formula, and the on-site data gathering equipment of special specialized particular design manufacture has high-precision accuracy of detection and bionical environmental adaptation and the ability of controlling oneself.Camera gun and blast furnace adopt sealing installation and mode of connection, are provided with high withstand voltage stainless steel draught excluder, can reliably seal open holes when installing or overhaul, and occur to reveal or breathe freely to avoid blast furnace.Furnace roof camera system technical feature refers to: sweep velocity: 50/s; Minimal illumination: 0LUX/1.2F; Operating distance: 0.2m～10m; Video recording mode: instant on-line automatic video recording; Playback is arranged; Adopt the 12VDC voltage of supply, directly provided by computer; Gaseous tension is 0.10MPa; Gas consumption<3m
3/ h, adjustable; Adopt all steel seal cartridge; Construction opening is of a size of 12cm.
Above-mentioned blast furnace utilizes the furnace roof infrared image to control the method that air-flow distributes, and mainly comprises the steps:
Step 1: absorb the infrared temperature distributed image of furnace roof charge level by the noctovisor that is arranged on blast furnace roof, and the infrared temperature distributed image of the furnace roof charge level of picked-up is kept in the computer of infrared image supervisory system;
Step 2: the infrared temperature distributed image to the furnace roof charge level carries out the feature extraction processing, thereby obtain circular image corresponding to the blast furnace roof airflow state, the principle of processing is that the corresponding brightness of image of blast furnace temperature area that air-flow is large is high, the corresponding brightness of image in low furnace temperature zone that air-flow is little is low, then circular image is divided into to three parts of same core, in the middle of described circular image, roundlet represents the blast furnace roof central gas stream, in the middle of circular image, endless belt represents blast furnace roof middle air flow endless belt, and the circular image outer shroud represents the air-flow at blast furnace roof edge;
Step 3: circular image is carried out to filtering process, to remove due to the noise of a large amount of dusts that exist in blast furnace gas to the circular image stack;
Step 4: after filtering process, obtain the continuous modified-image of for some time, then in above-mentioned continually varying image, respectively above-mentioned circular image is carried out the processing of grey level histogram with three parts of core, again all circular image are all carried out to the pattern recognition of image with three subregions of core, the characteristic image that each is regional is found out, to form three typical image storehouses, the typical image in the typical image storehouse has reflected the change procedure that blast furnace roof central gas stream, middle endless belt air-flow, edge air-flow grow from weak to strong; The acquisition process of above-mentioned characteristic image is: at first each width circular image is carried out to the processing of histogram distribution, then set up the classification samples storehouse formed by above-mentioned all histograms, then the histogram distribution of take is standard, in the histogram of all processing, find out histogrammic distribution pattern, the corresponding image of these histogram distribution patterns is exactly characteristic image;
Step 5: the blast furnace temperature area corresponding brightness of image large according to air-flow is high, the low technology characteristics of the low furnace temperature corresponding brightness of image in zone that air-flow is little, set up the corresponding relation between blast furnace roof central gas stream, blast furnace roof middle air flow endless belt, blast furnace roof edge air-flow and typical image: the image in the typical image storehouse is in fact corresponding to the air-flow of varying strength, the distribution pattern of the N analogous column diagram obtained in step 4, represent the picture pattern that the brightness of N class strengthens gradually, the picture pattern that the brightness of above-mentioned N class strengthens gradually is as the foundation of carrying out Images Classification;
Step 6: the picture pattern that the above-mentioned N class brightness of usining strengthens gradually is as standard, all images that current M gathered in the time are classified, obtain respectively the quantity of every class image in blast furnace roof center, the middle endless belt of blast furnace roof, blast furnace roof edge, then the brightness of take is X-coordinate, the quantity of each class image of take is ordinate zou, obtain a curve, this curve has represented the frequency that in the M time, dissimilar image occurs, this frequency has reflected the difference of variations in flow, and the curve in different time sections just distributes corresponding to the variations in flow in the corresponding time period;
Step 7: whether normally judge whether to need the blast furnace variations in flow obtained in set-up procedure 6 to distribute according to the operation of blast furnace situation, if the operation of blast furnace situation is normal, maintain existing operating duty, if the operation of blast furnace situation is undesired, enter step 8;
Step 8: arrange in PLC and select corresponding cloth (furnace charge layout) matrix at the furnace roof furnace charge, the blast furnace variations in flow is distributed and adjusts, make the operation of blast furnace situation reach normal.
Above-mentioned steps 7 and 8 is existing conventional control mode.
In technique scheme, whether described operation of blast furnace situation is normally by slag crust degree of stability, blanking situation and the judgement of pressure surge situation.Described slag crust degree of stability is weighed by the fluctuation of cooling stave temperature, when the fluctuation range of cooling stave temperature is that 80～120 ℃, the every batch error between the blanking interval is within 1 minute and pressure surge when being less than above-mentioned three conditions of 0.006Mpa and meeting simultaneously, corresponding operation of blast furnace situation is normal, when above-mentioned three conditions had one not meet, corresponding operation of blast furnace situation had fluctuation.
In technique scheme, in the process that in described step 8, distribution is adjusted to the blast furnace variations in flow, the real-time change of blast furnace air-flow distributes and is obtained by step 1～6.
In technique scheme, be saving resource, improve and process frequency, in described step 1, the infrared temperature distributed image of furnace roof charge level is the BMP bitmap format, and resolving power is 726*540.Image adopts with the principle of grabbing with processing and obtains.
In technique scheme, in step 3, adopt bayes method to carry out filtering process to circular image.Because blast furnace internal work environment is severe, infrared image changes very fast, charge level temperature just changed to 500～700 ℃ from 20～30 ℃ in 2～3 minutes, the infrared image of corresponding acquisition changes also than comparatively fast, simultaneously owing in blast furnace gas, there being a large amount of dusts, camera head is easy to assemble in the edge section of camera lens dust, and this just is equivalent to, to the image noise that superposeed, must before image is processed, the noise of image be removed.
In technique scheme, in described step 5 and step 6, histogrammic distribution pattern is 25 or 36 classes.
In technique scheme, in described step 6, the M time is one hour.
In the step 1 of technique scheme, by special image pick-up card is installed on computers, the IMAQ program of write specialized, just can frequency on demand arrest infrared image, image temporarily can be kept in the computer of infrared image supervisory system.
In technique scheme, the method detailed that described employing bayes method carries out filtering process to circular image is: regard image as a random field, the prior probability distribution P of known degraded image (y/x), adopt maximum likelihood estimation (maximum likehood, ML):
Realize the recovery of image.
The concrete grammar of setting up the typical image storehouse in the step 4 of technique scheme is:
S1: initialize
Classification is set and counts K, the cluster centre initialize of each classification:
{z
1(l),z
2(l),…,z
k(l)}
Wherein, z
j(l) represent the cluster centre value of the l time iteration, j is any one numerical value in 1～k.Initial value can be arbitrarily, usually is arranged to front K value of sample vector.
S2: sample is divided
Divide all sample vectors, make each sample vector x
(p)With interrelate one of in the K class, its division condition is:
X
(p)∈ S
j(l), if || x
(p)-z
j(l) ||<|| x
(p)-z
i(l) ||
For all i=1,2 ..., K, i ≠ j, wherein, S
jWhile (l) representing the l time iteration, classification j's is all.
S3: calculate new cluster centre
Be used in all members' set of the new class set up in S2, recalculate the central position of each class, can make from each vector classification to new cluster centre apart from the sum minimum.Here J
jMean each vector to new cluster centre apart from sum:
Z
j(l+1) be to make the minimized all sample S of above-mentioned formula
j(l) mean value.New cluster centre calculates with following formula:
Wherein, N
jIn S2, to belong to S
jThe quantity of sample vector.
S4: check convergence
When the convergence situation changes its position again without any cluster centre in S3, determine, can be expressed as on mathematics:
z
j(l+1)=z
j(l),j=1,2,…,K
If meet above-mentioned formula, so just restrained.Otherwise return S2 and continue iteration.
Here the learning sample adopted is 1200 (random sampling), and the K value is 25.After cluster, can be divided into 25 classifications to the furnace roof infrared image more clearlyly.
In the step 6 of technique scheme, all images that gather in current 1 hour have 600 width.
In the step 8 of technique scheme, if slag crust is bonding serious, blanking is sometimes fast and sometimes slow, have little lubricating substance, at this moment edge air-flow, central gas stream are generally more chaotic, more weak, at this moment need loose center and peripheral, keep two strands of air-flows of blast furnace to distribute, if the burden distribution matrix of normal running is
(C means coke here, and O means ore, ↓ mean charging, top position, numeral cloth angle, following numeral is in the cloth number of rings of position, corresponding cloth angle), can be by above-mentioned adjustment of matrix
This matrix and
Compare, in coke 9 bugle positions, add a ring coke, in 8 bugle positions, subtract a ring ore simultaneously; If slag crust comes off larger, or the cooling stave lip temperature is higher, and the edge air-flow is more prosperous, at this moment needs to increase the weight of edge, suitably decontrols center, can be by above-mentioned adjustment of matrix
This matrix and
Compare, in coke 8 bugle positions, subtract a ring coke, in 8 bugle positions, add a ring ore simultaneously; If blanking is steady, lip temperature is stable, moderate, and central gas stream is also moderate, at this moment can maintain the current operation system.Air-flow is now completed by the method for step 1～6 respectively.
The content that specification sheets is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (8)
1. one kind is utilized the furnace roof infrared image to control the method that air-flow distributes, and it is characterized in that, it comprises the steps:
Step 1: absorb the infrared temperature distributed image of furnace roof charge level by the noctovisor that is arranged on blast furnace roof, and the infrared temperature distributed image of the furnace roof charge level of picked-up is kept in the computer of infrared image supervisory system;
Step 2: the feature extraction processing is carried out in the infrared temperature distribution to the furnace roof charge level, thereby obtain circular image corresponding to the blast furnace roof airflow state, the principle of processing is that the corresponding brightness of image of blast furnace temperature area that air-flow is large is high, the corresponding brightness of image in low furnace temperature zone that air-flow is little is low, then circular image is divided into to three parts of same core, in the middle of described circular image, roundlet represents the blast furnace roof central gas stream, in the middle of circular image, endless belt represents blast furnace roof middle air flow endless belt, and the circular image outer shroud represents the air-flow at blast furnace roof edge;
Step 3: circular image is carried out to filtering process, to remove due to the noise of a large amount of dusts that exist in blast furnace gas to the circular image stack;
Step 4: after filtering process, obtain the continuous modified-image of for some time, then in above-mentioned continually varying image, respectively above-mentioned circular image is carried out the processing of grey level histogram with three parts of core, again all circular image are all carried out to the pattern recognition of image with three subregions of core, the characteristic image that each is regional is found out, to form three typical image storehouses, the typical image in the typical image storehouse has reflected the change procedure that blast furnace roof central gas stream, middle endless belt air-flow, edge air-flow grow from weak to strong; The acquisition process of above-mentioned characteristic image is: at first each width circular image is carried out to the processing of histogram distribution, then set up the classification samples storehouse formed by above-mentioned all histograms, then the histogram distribution of take is standard, in the histogram of all processing, find out histogrammic distribution pattern, the corresponding image of these histogram distribution patterns is exactly characteristic image;
Step 5: the blast furnace temperature area corresponding brightness of image large according to air-flow is high, the low technology characteristics of the low furnace temperature corresponding brightness of image in zone that air-flow is little, set up the corresponding relation between blast furnace roof central gas stream, blast furnace roof middle air flow endless belt, blast furnace roof edge air-flow and typical image: the image in the typical image storehouse is in fact corresponding to the air-flow of varying strength, the distribution pattern of the N analogous column diagram obtained in step 4, represent the picture pattern that the brightness of N class strengthens gradually, the picture pattern that the brightness of above-mentioned N class strengthens gradually is as the foundation of carrying out Images Classification;
Step 6: the picture pattern that the above-mentioned N class brightness of usining strengthens gradually is as standard, all images that current M gathered in the time are classified, obtain respectively the quantity of every class image in blast furnace roof center, the middle endless belt of blast furnace roof, blast furnace roof edge, then the brightness of take is X-coordinate, the quantity of each class image of take is ordinate zou, obtain a curve, this curve has represented the frequency that in the M time, dissimilar image occurs, this frequency has reflected the difference of variations in flow, and the curve in different time sections just distributes corresponding to the variations in flow in the corresponding time period;
Step 7: whether normally judge whether to need the blast furnace variations in flow obtained in set-up procedure 6 to distribute according to the operation of blast furnace situation, if the operation of blast furnace situation is normal, maintain existing operating duty, if the operation of blast furnace situation is undesired, enter step 8;
Step 8: arrange in PLC and select corresponding burden distribution matrix at the furnace roof furnace charge, the blast furnace variations in flow is distributed and adjusts, make the operation of blast furnace situation reach normal.
2. the furnace roof infrared image that utilizes according to claim 1 is controlled the method that air-flow distributes, and it is characterized in that: whether described operation of blast furnace situation is normally by slag crust degree of stability, blanking situation and the judgement of pressure surge situation.
3. the furnace roof infrared image that utilizes according to claim 1 is controlled the method that air-flow distributes, and it is characterized in that: in the process that in described step 8, distribution is adjusted to the blast furnace variations in flow, the real-time change of blast furnace air-flow distributes and is obtained by step 1～6.
4. the furnace roof infrared image that utilizes according to claim 1 is controlled the method that air-flow distributes, and it is characterized in that: in described step 1, the infrared temperature distributed image of furnace roof charge level is the BMP bitmap format, and resolving power is 726*540.
5. the furnace roof infrared image that utilizes according to claim 1 is controlled the method that air-flow distributes, and it is characterized in that: in step 3, adopt bayes method to carry out filtering process to circular image.
6. the furnace roof infrared image that utilizes according to claim 1 is controlled the method that air-flow distributes, and it is characterized in that: in described step 5 and step 6, histogrammic distribution pattern is 25 or 36 classes.
7. the furnace roof infrared image that utilizes according to claim 1 is controlled the method that air-flow distributes, and it is characterized in that: in described step 6, the M time is one hour.
8. the furnace roof infrared image that utilizes according to claim 2 is controlled the method that air-flow distributes, it is characterized in that: described slag crust degree of stability is weighed by the fluctuation of cooling stave temperature, when the fluctuation range of cooling stave temperature is that 80～120 ℃, the every batch error between the blanking interval is within 1 minute and pressure surge when being less than above-mentioned three conditions of 0.006Mpa and meeting simultaneously, corresponding operation of blast furnace situation is normal, when above-mentioned three conditions had one not meet, corresponding operation of blast furnace situation had fluctuation.
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| CN109022650A (en) * | 2018-09-29 | 2018-12-18 | 武汉钢铁有限公司 | A kind of recognition methods of upper blast furnace gas fluid distrbution |
| CN109852748A (en) * | 2019-02-27 | 2019-06-07 | 内蒙古科技大学 | Monitor the Gas Flow development process of blast furnace material distribution period and prediction gas utilization rate method |
| CN109852748B (en) * | 2019-02-27 | 2020-05-08 | 内蒙古科技大学 | Method for monitoring development process of gas flow in distribution period of blast furnace and predicting gas utilization rate |
| CN112347154A (en) * | 2020-10-23 | 2021-02-09 | 中冶南方工程技术有限公司 | Slag crust shedding index calculation method, terminal equipment and storage medium |
| CN114581785A (en) * | 2022-05-09 | 2022-06-03 | 中国科学院自动化研究所 | Multi-source heterogeneous data fusion blast furnace gas flow distribution state identification method and system |
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