CN113987008B - Blast furnace slag peel falling judgment method, terminal equipment and storage medium - Google Patents
Blast furnace slag peel falling judgment method, terminal equipment and storage medium Download PDFInfo
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- 239000002893 slag Substances 0.000 title claims abstract description 56
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- 206010040844 Skin exfoliation Diseases 0.000 description 4
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Abstract
The invention relates to a blast furnace slag peel falling judgment method, terminal equipment and storage medium, wherein the method comprises the following steps: s1: constructing a temperature data table and a drop point information table; s2: collecting temperature data at the cooling wall of the blast furnace in real time and storing the temperature data in a temperature data table; s3: extracting the temperature data in the latest first rated time from the temperature data table for preprocessing; s4: analyzing the preprocessed temperature data, judging whether slag skin is shed, and calculating the shedding starting time, the shedding ending time and the shedding thickness of the secondary slag skin when the slag skin is shed, and storing the shedding starting time, the shedding ending time and the shedding thickness in a shedding point information table; s5: and extracting the data in the second latest rated time from the shedding point information table, and calculating the shedding index in the second rated time. According to the invention, the slag skin falling state of the furnace wall is deduced according to the temperature change of the cooling wall of the blast furnace, a corresponding report is generated according to the analysis result, and the detailed slag skin falling information can be obtained by referring to the report.
Description
Technical Field
The invention relates to the technical field of blast furnace ironmaking, in particular to a blast furnace slag peel falling judgment method, terminal equipment and a storage medium.
Background
In the normal production process of the blast furnace, gangue is heated and forms slag slowly due to oxidation, the slag is adhered to a cooling wall with lower temperature at the positions of the furnace belly and the furnace waist, and slag crust is formed on the cooling wall. The thickness of the slag skin is gradually increased along with the continuous adhesion of the slag skin, and when the slag skin reaches a certain thickness, the slag skin can fall off from the cooling wall under the flushing of the gas flow and the molten iron. Slag skin formation and falling off are natural phenomena in the ore reduction process, but frequent slag skin falling off is abnormal, can influence the forward running of the blast furnace, and can lead to the descending of the furnace temperature and frequent furnace conditions when serious.
The slag skin can protect the furnace wall, prevent the brick lining from being corroded, and prevent the temperature in the furnace from losing outwards. When the slag crust falls off, the whole thickness of the furnace wall at the position is thinned, so that the thermal resistance of the cooling wall is reduced, the thermal load is increased, the temperature of the cooling wall is finally increased rapidly, and the thermocouple data value in the cooling wall is increased rapidly. Therefore, it is necessary to judge whether the slag crust is detached in real time.
Disclosure of Invention
In order to solve the problems, the invention provides a blast furnace slag peel falling judgment method, terminal equipment and a storage medium.
The specific scheme is as follows:
a method for judging the falling of blast furnace slag skin comprises the following steps:
s1: constructing a temperature data table and a drop point information table, wherein the temperature data table comprises a time stamp field and a temperature field, and the drop point information table comprises a time stamp field, a drop position field, a drop start time field, a drop end time field, a drop duration field and a drop thickness field;
s2: collecting temperature data at the cooling wall of the blast furnace in real time through a plurality of temperature collecting modules arranged at different positions of the cooling wall of the blast furnace, and storing the temperature data in a temperature data table;
s3: extracting temperature data in the latest first rated time from the temperature data table, preprocessing the temperature data, and removing abnormal data in the temperature data table;
s4: analyzing the preprocessed temperature data, judging whether slag skin is shed, and calculating the shedding starting time, the shedding ending time and the shedding thickness of the secondary slag skin when the slag skin is shed, and storing the shedding starting time, the shedding ending time and the shedding thickness in a shedding point information table;
s5: and extracting the data in the second latest rated time from the shedding point information table, and calculating the shedding index in the second rated time.
Further, the specific process of preprocessing in step S3 includes: setting the temperature data at the current moment as T k The temperature data at the last moment is T k-1 The temperature data at the next moment is T k+1 The minimum temperature threshold is delta 1 The maximum temperature threshold is delta 2 The temperature difference threshold is delta 3 The method comprises the steps of carrying out a first treatment on the surface of the When T is k The value of (2) satisfies any one of the following three conditions, and T is determined k Is invalid data, T is k The value of (2) is updated toThe three conditions are respectively: (1) T (T) k <δ 1 、(2)T k >δ 2 、(3)|T k -T k-1 |>δ 3 And |T k -T k+1 |>δ 3 。
Further, the method for judging whether slag skin falling occurs comprises the following steps: setting the temperature data at the current moment as T k The temperature data at the last moment is T k-1 The temperature data at the next moment is T k+1 The temperature difference threshold is DeltaT; when T is satisfied k -T k+1 >ΔT and T k -T k-1 >And when the slag is separated, judging that slag is separated, and setting the k moment as the separation completion moment.
Further, for the temperature data, traversing forward from the falling completion time k in sequence until T is satisfied k-i+1 -T k-i >At DeltaT, the moment k-i is determined as the falling start moment, and i is a positive integer.
Further, the shedding start time and the shedding completion time are determined according to the shedding start time, the shedding completion time and the sampling period.
Further, the calculation formula of the shedding index Z is:
wherein n represents the total number of falling times in the second rated time, j represents the number of falling times, h j The thickness of the slag skin falling off at the j th time is represented by N, the total number of cooling wall blocks is represented by m, the number of the cooling wall blocks is represented by H (m,n) Is an intermediate variable.
Further, S6: and storing the calculated shedding index into a database, and generating a corresponding report file.
The terminal equipment for judging the falling of the blast furnace slag comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, wherein the steps of the method according to the embodiment of the invention are realized when the processor executes the computer program.
A computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method described above for embodiments of the present invention.
According to the technical scheme, the slag skin falling-off condition of the furnace wall is deduced according to the temperature change of the cooling wall of the blast furnace, a corresponding report is generated according to the analysis result, and the detailed slag skin falling-off information can be obtained by consulting the report.
Drawings
Fig. 1 is a flowchart of a first embodiment of the present invention.
Detailed Description
For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention.
The invention will now be further described with reference to the drawings and detailed description.
Embodiment one:
the embodiment of the invention provides a method for judging the falling of blast furnace slag skin, which is shown in figure 1 and comprises the following steps:
s1: and constructing a temperature data table and a drop point information table, wherein the temperature data table comprises a time stamp field and a temperature field, and the drop point information table comprises a time stamp field, a drop position field, a drop start time field, a drop end time field, a drop duration field and a drop thickness field.
In this embodiment, the temperature data table and the drop point information table are both stored in a database at the server side.
S2: temperature data at the cooling wall of the blast furnace is acquired in real time through a plurality of temperature acquisition modules arranged at different positions of the cooling wall of the blast furnace, and the temperature data are stored in a temperature data table.
The temperature acquisition module in this embodiment employs a thermocouple.
S3: and extracting the temperature data in the latest first rated time from the temperature data table, preprocessing the temperature data, and removing abnormal data in the temperature data table.
The specific process of pretreatment in this embodiment includes: setting the temperature data at the current moment as T k The temperature data at the last moment is T k-1 The temperature data at the next moment is T k+1 The minimum temperature threshold is delta 1 The maximum temperature threshold is delta 2 The temperature difference threshold is delta 3 The method comprises the steps of carrying out a first treatment on the surface of the When T is k The value of (2) satisfies any one of the following three conditions, and T is determined k Is invalid data, T is k The value of (2) is updated toThe three conditions are respectively: (1) T (T) k <δ 1 、(2)T k >δ 2 、(3)|T k -T k-1 |>δ 3 And |T k -T k+1 |>δ 3 。
The first rated time is set to fifteen minutes in this embodiment, and can be set by a person skilled in the art according to the needs, which is not limited herein.
By preprocessing, the influence of abnormal data on subsequent data analysis can be avoided.
S4: and analyzing the preprocessed temperature data to judge whether slag skin is shed, and calculating the shedding starting time, the shedding ending time and the shedding thickness of the secondary slag skin when the slag skin is shed, and storing the shedding starting time, the shedding ending time and the shedding thickness in a shedding point information table.
The method for judging whether slag skin falling occurs in the embodiment comprises the following steps: setting the temperature data at the current moment as T k The temperature data at the last moment is T k-1 The temperature data at the next moment is T k+1 The temperature difference threshold is DeltaT; when T is satisfied k -T k+1 >ΔT and T k -T k-1 >And when the slag is separated, judging that slag is separated, and setting the k moment as the separation completion moment.
For the temperature data, traversing forward from the falling completion time k in sequence until T is satisfied k-i+1 -T k-i >At DeltaT, the moment k-i is determined as the falling start moment, and i is a positive integer.
And determining the shedding starting time and the shedding finishing time according to the shedding starting time k-i, the shedding finishing time k and the sampling period delta t.
The thickness of the falling off is the thickness at the falling off start time minus the thickness at the falling off end time.
S5: and extracting the data in the second latest rated time from the shedding point information table, and calculating the shedding index in the second rated time.
The calculation formula of the shedding index Z in this embodiment is:
wherein n represents the total number of falling times in the second rated time, j represents the number of falling times, h j The thickness of the slag skin falling off at the j th time is represented by N, the total number of cooling wall blocks is represented by m, the number of the cooling wall blocks is represented by H (m,n) Is an intermediate variable.
The second rated time is set to one hour in this embodiment, and can be set by one skilled in the art according to the requirement, and is not limited herein.
Further, the embodiment further includes S6: and storing the calculated shedding index into a database of the server, and generating a corresponding report file.
According to the embodiment of the invention, the slag skin falling-off condition of the furnace wall is deduced according to the temperature change of the cooling wall of the blast furnace, a corresponding report is generated according to the analysis result, and the detailed slag skin falling-off information can be obtained by referring to the report.
Embodiment two:
the invention also provides a blast furnace slag peel drop judging terminal device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the steps in the method embodiment of the first embodiment of the invention are realized when the processor executes the computer program.
Further, as an executable scheme, the blast furnace slag peel drop judging terminal device may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, and the like. The blast furnace slag-off judging terminal device may include, but is not limited to, a processor and a memory. It will be understood by those skilled in the art that the above-described composition structure of the blast furnace slag-skin-peeling judging terminal device is merely an example of the blast furnace slag-peeling judging terminal device, and does not constitute limitation of the blast furnace slag-peeling judging terminal device, and may include more or less components than those described above, or may combine some components, or different components, for example, the blast furnace slag-peeling judging terminal device may further include an input-output device, a network access device, a bus, and the like, which is not limited by the embodiment of the present invention.
Further, as an implementation, the processor may be a central processing unit (Central Processing Unit, CPU), other general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The general processor may be a microprocessor or any conventional processor, etc., and the processor is a control center of the blast furnace slag-off judging terminal device, and is connected with various parts of the whole blast furnace slag-off judging terminal device by various interfaces and lines.
The memory can be used for storing the computer program and/or the module, and the processor can realize various functions of the blast furnace slag-off judging terminal device by running or executing the computer program and/or the module stored in the memory and calling the data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the cellular phone, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid-state storage device.
The present invention also provides a computer readable storage medium storing a computer program which when executed by a processor implements the steps of the above-described method of an embodiment of the present invention.
The module/unit integrated with the blast furnace slag-off judging terminal device can be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as an independent product. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a software distribution medium, and so forth.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The method for judging the falling of the blast furnace slag skin is characterized by comprising the following steps of:
s1: constructing a temperature data table and a drop point information table, wherein the temperature data table comprises a time stamp field and a temperature field, and the drop point information table comprises a time stamp field, a drop position field, a drop start time field, a drop end time field, a drop duration field and a drop thickness field;
s2: collecting temperature data at the cooling wall of the blast furnace in real time through a plurality of temperature collecting modules arranged at different positions of the cooling wall of the blast furnace, and storing the temperature data in a temperature data table;
s3: extracting temperature data in the latest first rated time from the temperature data table, preprocessing the temperature data, and removing abnormal data in the temperature data table;
s4: for the pre-treatmentAnalyzing the processed temperature data to judge whether slag skin is shed, and calculating the shedding starting time, the shedding ending time and the shedding thickness of the secondary slag skin when the slag skin is shed, and storing the shedding starting time, the shedding ending time and the shedding thickness in a shedding point information table; the method for judging whether slag skin falls off comprises the following steps: setting the temperature data at the current moment as T k The temperature data at the last moment is T k-1 The temperature data at the next moment is T k+1 The temperature difference threshold is DeltaT; when T is satisfied k -T k+1 >ΔT and T k -T k-1 >When delta T is detected, judging that slag skin is fallen off, and setting k time as the falling completion time; for the temperature data, traversing forward from the falling completion time k in sequence until T is satisfied k-i+1 -T k-i >When the T is the delta T, judging that the k-i moment is the falling start moment, and i is a positive integer;
s5: extracting the data in the second latest rated time from the shedding point information table, and calculating the shedding index in the second rated time; the calculation formula of the shedding index Z is as follows:
wherein n represents the total number of falling times in the second rated time, j represents the number of falling times, h j The thickness of the slag skin falling off at the j th time is represented by N, the total number of cooling wall blocks is represented by m, the number of the cooling wall blocks is represented by H (m,n) Is an intermediate variable.
2. The method for judging the falling off of blast furnace slag according to claim 1, wherein: the specific process of preprocessing in step S3 includes: setting the temperature data at the current moment as T k The temperature data at the last moment is T k-1 The temperature data at the next moment is T k+1 The minimum temperature threshold is delta 1 The maximum temperature threshold is delta 2 The temperature difference threshold is delta 3 The method comprises the steps of carrying out a first treatment on the surface of the When T is k The value of (2) satisfies any one of the following three conditions, and T is determined k Is invalid data, T is k The value of (2) is updated toThe three conditions are respectively: (1) T (T) k <δ 1 、(2)T k >δ 2 、(3)|T k -T k-1 |>δ 3 And |T k -T k+1 |>δ 3 。
3. The method for judging the falling off of blast furnace slag according to claim 1, wherein: and determining the shedding starting time and the shedding finishing time according to the shedding starting time, the shedding finishing time and the sampling period.
4. The method for judging the falling off of blast furnace slag according to claim 1, wherein: further comprising S6: and storing the calculated shedding index into a database, and generating a corresponding report file.
5. A terminal equipment is judged to blast furnace slag skin drop, its characterized in that: comprising a processor, a memory and a computer program stored in the memory and running on the processor, which processor, when executing the computer program, carries out the steps of the method according to any one of claims 1 to 4.
6. A computer-readable storage medium storing a computer program, characterized in that: the computer program, when executed by a processor, implements the steps of the method according to any one of claims 1 to 4.
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| CN202111185984.1A CN113987008B (en) | 2021-10-12 | 2021-10-12 | Blast furnace slag peel falling judgment method, terminal equipment and storage medium |
| PCT/CN2021/128120 WO2023060663A1 (en) | 2021-10-12 | 2021-11-02 | Blast furnace slag crust shedding determination method and terminal device, and storage medium |
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| CN113987008A (en) | 2022-01-28 |
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