CN114231683A - Blast furnace slag tapping weight detection method and system - Google Patents
Blast furnace slag tapping weight detection method and system Download PDFInfo
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- CN114231683A CN114231683A CN202111406375.4A CN202111406375A CN114231683A CN 114231683 A CN114231683 A CN 114231683A CN 202111406375 A CN202111406375 A CN 202111406375A CN 114231683 A CN114231683 A CN 114231683A
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- 239000002893 slag Substances 0.000 title claims abstract description 349
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 66
- 238000001514 detection method Methods 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 106
- 238000007599 discharging Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000007781 pre-processing Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 description 12
- 238000011010 flushing procedure Methods 0.000 description 5
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
Abstract
The invention discloses a blast furnace slag tapping weight detection method, which comprises the following steps: s1, determining the volume V1 of a slag pile before slag tapping; s2, determining the volume V2 of the slag pile after slag discharge; s3, taking the difference value of the volume V1 of the slag pile and the volume V2 of the slag pile as the slag discharging volume, and taking the product of the slag discharging volume and the density of slag discharging water slag as the weight of the slag discharging water slag; s4, detecting the water content of the slag water slag during the slag grabbing process; s5, calculating the water content of the discharged slag according to the water content of the discharged water slag; and subtracting the water content of the slag from the weight of the water slag as the slag weight. The detection system comprises a slag pile detection unit, a slag pile data preprocessing unit, a water slag detection unit and a slag discharge data processing unit; the invention can accurately calculate the amount of the slag corresponding to each tapping, and provides effective guidance for digital furnace operation.
Description
Technical Field
The invention relates to the field of slag treatment by a blast furnace iron making bottom filtering method, in particular to a blast furnace slag weight detection method and a blast furnace slag weight detection system.
Background
A large amount of high-temperature molten slag is produced in the blast furnace ironmaking production process. At present, the mainstream process of slag treatment mainly adopts a mechanical method or a bottom filtration method to separate slag water after water quenching and granulation. The bottom filtration method, especially the siphon bottom filtration method, has the advantages of simple mechanical equipment composition, less workload of overhaul and maintenance, low water content of granulated slag and friendly operation environment, and can rapidly improve the acceptance in the industry.
The bottom filtering method is used for weighing the slag amount, and generally, a belt scale is arranged on an external adhesive tape conveying machine to measure the water slag conveying amount in real time. However, because the uncertainty of the total slag grabbing amount and the water content of the granulated slag are estimated and selected by experience in each bottom filtration method, the measurement of the slag amount corresponding to each tapping is not accurate, and the digital furnace operation cannot be effectively guided.
Disclosure of Invention
In view of this, the present invention aims to overcome the defects in the prior art, and provides a method and a system for detecting the slag discharge weight of a blast furnace, which can accurately calculate the amount of slag corresponding to each tapping, and provide effective guidance for digital furnace operation.
The invention discloses a blast furnace slag tapping weight detection method, which comprises the following steps:
s1, determining the volume V1 of a slag pile before slag tapping;
s2, determining the volume V2 of the slag pile after slag discharge;
s3, taking the difference value of the volume V1 of the slag pile and the volume V2 of the slag pile as the slag discharging volume, and taking the product of the slag discharging volume and the density of slag discharging water slag as the weight of the slag discharging water slag;
s4, detecting the water content of the slag water slag during the slag grabbing process;
s5, calculating the water content of the discharged slag according to the water content of the discharged water slag; and subtracting the water content of the slag from the weight of the water slag as the slag weight.
Further, step S1 specifically includes:
s11, collecting 3D data information of a slag pile before slag tapping;
s12, carrying out 3D modeling on the slag pile according to 3D data information of the slag pile before slag tapping to obtain a 3D model of the slag pile before slag tapping;
and S13, obtaining the volume V1 of the slag pile before slag tapping from the 3D model of the slag pile before slag tapping.
Further, step S2 specifically includes:
s21, collecting 3D data information of the slag pile after slag tapping;
s22, carrying out 3D modeling on the slag pile according to the 3D data information of the slag pile after slag tapping to obtain a 3D model of the slag pile after slag tapping;
and S23, obtaining the volume V2 of the slag pile after slag tapping from the 3D model of the slag pile after slag tapping.
Further, the value range of the density of the slag water slag is gamma t/m3～δt/m3。
Further, the water content m of the discharged slagWater (W)Comprises the following steps:
mwater (W)＝mSlag×εWater (W)；
Wherein m isSlagThe weight of the slag water slag is taken as the weight of the slag water slag; epsilonWater (W)The water content of the slag water is shown.
A blast furnace slag tapping weight detection system comprises a slag pile detection unit, a slag pile data preprocessing unit, a water slag detection unit and a slag tapping data processing unit;
the slag pile detection unit comprises a slag grabbing crane arranged above the slag pile and a 3D scanning device arranged on the slag grabbing crane; the 3D scanning device is used for collecting 3D data information of the slag pile;
the slag pile data preprocessing unit comprises an industrial personal computer; the industrial personal computer is in communication connection with the 3D scanning device; the industrial personal computer is used for receiving the 3D data information of the slag pile and preprocessing the 3D data information of the slag pile;
the granulated slag detection unit comprises a granulated slag outward conveying device and a moisture detection device arranged on the granulated slag outward conveying device; the moisture detection device is used for detecting the moisture content information of the discharged water slag;
the slag discharging data processing unit is respectively in communication connection with the industrial personal computer and the moisture detection device, and the slag discharging data unit is used for calculating the slag discharging volume according to the 3D data information after pretreatment and calculating the slag discharging weight according to the moisture content information of the slag discharging water slag.
Further, the 3D scanning device comprises a 3D laser scanner; the 3D laser scanner adopts high protection level and compressed air to sweep the device.
Further, the 3D laser scanner is not less than one set.
Further, the industrial personal computer is an embedded industrial personal computer; the embedded industrial personal computer is arranged on the slag grabbing crane.
Further, the moisture detection device comprises a material moisture detector.
The invention has the beneficial effects that: according to the method and the system for detecting the slag discharging weight of the blast furnace, the 3D scanner is used for carrying out all-dimensional and all-coverage scanning on the slag pile in the filter tank, and the 3D modeling of the water granulated slag storage yard is realized through the acquired point cloud data; and finally obtaining the amount of the molten slag corresponding to one-time tapping by calculating the three-dimensional volume difference of the slag pile in the filter tank before and after tapping and combining the water content and density data of the water slag. The invention can accurately calculate the amount of the slag corresponding to each tapping, provides effective guidance for digital furnace operation, and has the advantages of simple detection system, reliable technology, easy realization, strong transportability and wide application range.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the system of the present invention;
wherein, 1-a bottom filtration method slag flushing and filtering device; 2, a slag grabbing crane; 3-conveying belt for grain slag; 4-digital slag yard graphic workstation.
Detailed Description
The invention is further described with reference to the accompanying drawings, in which:
the invention discloses a blast furnace slag tapping weight detection method, which comprises the following steps:
s1, determining the volume V1 of a slag pile before slag tapping; the detection of the slag tapping weight refers to the detection of the slag tapping weight in the primary slag tapping process; for the detection of the slag discharging weight, the volume of a slag pile in the filter tank needs to be measured and calculated after the last slag discharging and before the slag discharging; after the last slag discharge and before the start of the current slag discharge refer to that the last slag granulation operation is finished, the lifting pump set finishes the filtering operation, the slag grabbing crane finishes grabbing the water slag in the filter tank and the current slag granulation operation is in a waiting state;
s2, determining the volume V2 of the slag pile after slag discharge; corresponding to step S1, after the current slag tapping is finished and before the next slag tapping is started, the volume of the slag pile in the filter tank needs to be measured and calculated again; after the slag discharge is finished and before the slag discharge of the next time is started, the slag granulation operation is finished, the filter operation of the lifting pump group is finished, and the slag grabbing operation is not performed by the slag grabbing crane;
s3, taking the difference value of the volume V1 of the slag pile and the volume V2 of the slag pile as the slag discharging volume, and taking the product of the slag discharging volume and the density of slag discharging water slag as the weight of the slag discharging water slag; wherein the difference is V1-V2; the density of the slag water slag can be manually set according to the actual working area environment;
s4, detecting the water content of the slag water slag during the slag grabbing process; wherein, because the granulated slag contains a certain amount of water, in order to ensure the accuracy of the detection of the slag weight, the water content of the slag granulated slag needs to be detected; the water slag is a slag-water mixture with low water content formed after high-temperature molten slag is subjected to high-pressure water quenching;
s5, calculating the water content of the discharged slag according to the water content of the discharged water slag; and subtracting the water content of the slag from the weight of the water slag as the slag weight.
Wherein, the flow of blast furnace slag tapping is generally as follows: slag water quenching, wherein the process lasts for about 2 hours, and a slag-water mixture exists in the filter tank in the period; after about 10min of slag flushing, most of water in the slag-water mixture in the filter tank is pumped by a lift pump set to form low-turbidity water slag; and then the water slag is grabbed to the adhesive tape machine by a slag grabbing crane or a grab bucket crane above the filter tank for outward transportation, and at the moment, the water content detection can be carried out.
In this embodiment, the step S1 specifically includes:
s11, collecting 3D data information of a slag pile before slag tapping; the method comprises the following steps of performing all-dimensional and all-coverage scanning on a slag pile in a filter tank by using a 3D laser scanner to obtain basic data of three-dimensional modeling; the slag pile 3D data information is point cloud data;
s12, carrying out 3D modeling on the slag pile according to 3D data information of the slag pile before slag tapping to obtain a 3D model of the slag pile before slag tapping; the 3D modeling adopts the existing three-dimensional modeling technology, and is not repeated herein;
and S13, obtaining the volume V1 of the slag pile before slag tapping from the 3D model of the slag pile before slag tapping.
The 3D laser scanner can perform high-speed and high-density measurement through an object and output three-dimensional point cloud, so that scanning of the whole three-dimensional space in a slag field range is formed. The three-dimensional data of various large entities or scenes are completely collected into a computer by recording the three-dimensional coordinate information and the reflectivity information of a large number of dense points on the surface of a measured object, and then the three-dimensional model, the line, the surface, the object and other various drawing data of the measured object are quickly reconstructed; and finally obtaining the 3D modeling of the granulated slag storage yard.
In this embodiment, the step S2 specifically includes:
s21, collecting 3D data information of the slag pile after slag tapping;
s22, carrying out 3D modeling on the slag pile according to the 3D data information of the slag pile after slag tapping to obtain a 3D model of the slag pile after slag tapping;
and S23, obtaining the volume V2 of the slag pile after slag tapping from the 3D model of the slag pile after slag tapping.
The principle of calculating the slag bulk volume V2 in step S2 is the same as that in step S1, and is not described herein again.
In this embodiment, the value range of the slag-tapping water slag density is gamma t/m3～δt/m3. The value of gamma is 1.0, and the value of delta is 1.1.
In this embodiment, the slag water content mWater (W)Comprises the following steps:
mwater (W)＝mSlag×εWater (W)；
Wherein m isSlagThe weight of the slag water slag is taken as the weight of the slag water slag; epsilonWater (W)The water content of the slag water is shown. The moisture content of the slag water can be measured by a non-contact material moisture infrared detector in real time.
A blast furnace slag tapping weight detection system comprises a slag pile detection unit, a slag pile data preprocessing unit, a water slag detection unit and a slag tapping data processing unit;
the slag pile detection unit comprises a slag grabbing crane 2 arranged above the slag pile and a 3D scanning device arranged on the slag grabbing crane 2; the 3D scanning device is used for collecting 3D data information of the slag pile; the slag pile is positioned in a bottom filtration type slag flushing filter device 1, and the bottom filtration type slag flushing filter device 1 comprises a filter layer, a water filter pipe, a hot water tank and a lifting pump set; the bottom filtration slag flushing filter device 1 adopts the existing process device; the 3D scanning device is arranged on the slag grabbing crane 2, so that the 3D scanning device can realize all-dimensional and full-coverage scanning of the slag pile along with the movement of the slag grabbing crane 2; the 3D scanning device acquires information of a slag field and a slag pile and then sends data to the industrial personal computer through a network;
the slag pile data preprocessing unit comprises an industrial personal computer; the industrial personal computer is in communication connection with the 3D scanning device; the industrial personal computer is used for receiving the 3D data information of the slag pile and preprocessing the 3D data information of the slag pile; the industrial personal computer is internally provided with a 3D cloud picture front-end processing platform, and the 3D cloud picture front-end processing platform is used for preprocessing point cloud data acquired by the 3D scanning device to obtain preprocessed image data; the 3D cloud picture front-end processing platform adopts the existing 3D cloud picture front-end processing software or program, and is not described herein again;
the granulated slag detection unit comprises a granulated slag outward conveying device and a moisture detection device arranged on the granulated slag outward conveying device; the moisture detection device is used for detecting the moisture content information of the discharged water slag; the grain slag outward-conveying device is used for conveying slag-discharged grain slag, the grain slag outward-conveying device is a grain slag outward-conveying belt 3, and the grain slag outward-conveying belt 3 is arranged below the slag grabbing crane 2 and beside the filter tank.
The slag discharging data processing unit is respectively in communication connection with the industrial personal computer and the moisture detection device, and the slag discharging data unit is used for calculating the slag discharging volume according to the 3D data information after pretreatment and calculating the slag discharging weight according to the moisture content information of the slag discharging water slag. Wherein the communication connection adopts optical fiber or wireless communication; the slag discharge data processing unit comprises a digital slag field graphic workstation 4, the digital slag field graphic workstation 4 comprises a 3D cloud picture rear-end processing platform, the 3D cloud picture rear-end processing platform completes real-time slag field modeling and automatic generation of a 3D slag field picture according to the pre-processing data of the 3D cloud picture front-end platform, and realizes the calculation functions of slag discharge weight and the like, the data storage function and the like by receiving the water content information of the slag discharge water slag; the 3D cloud picture back-end processing platform adopts the existing 3D cloud picture back-end processing software or program, and details are not repeated here.
In this embodiment, the 3D scanning device includes a 3D laser scanner; the 3D laser scanner adopts high protection level and compressed air to sweep the device. Through above-mentioned structure, guaranteed 3D laser scanner's waterproof, dustproof, corrosion resistance and reduced outside corruption to ensure electrical equipment's job stabilization nature.
In this embodiment, the 3D laser scanner is not less than one set. The 3D laser scanners are of two sets, the two sets of scanners work simultaneously, and the two sets of scanners work mutually to be hot standby redundancy, so that the reliability of the collection work of the 3D laser scanners is guaranteed.
In the embodiment, the industrial personal computer is an embedded industrial personal computer; the embedded industrial personal computer is arranged on the slag grabbing crane 2. Through the structure, the communication between the industrial personal computer and the 3D scanning device is more convenient and faster.
In this embodiment, the moisture detection device includes a material moisture detector. The material moisture detector is a non-contact material moisture infrared detector, and ensures that the moisture content of the discharged slag water is detected in real time under the condition that the discharged slag water is not damaged.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A blast furnace slag tapping weight detection method is characterized in that: the method comprises the following steps:
s1, determining the volume V1 of a slag pile before slag tapping;
s2, determining the volume V2 of the slag pile after slag discharge;
s3, taking the difference value of the volume V1 of the slag pile and the volume V2 of the slag pile as the slag discharging volume, and taking the product of the slag discharging volume and the density of slag discharging water slag as the weight of the slag discharging water slag;
s4, detecting the water content of the slag water slag during the slag grabbing process;
s5, calculating the water content of the discharged slag according to the water content of the discharged water slag; and subtracting the water content of the slag from the weight of the water slag as the slag weight.
2. The blast furnace tapping weight detection method according to claim 1, characterized in that: the step S1 specifically includes:
s11, collecting 3D data information of a slag pile before slag tapping;
s12, carrying out 3D modeling on the slag pile according to 3D data information of the slag pile before slag tapping to obtain a 3D model of the slag pile before slag tapping;
and S13, obtaining the volume V1 of the slag pile before slag tapping from the 3D model of the slag pile before slag tapping.
3. The blast furnace tapping weight detection method according to claim 1, characterized in that: the step S2 specifically includes:
s21, collecting 3D data information of the slag pile after slag tapping;
s22, carrying out 3D modeling on the slag pile according to the 3D data information of the slag pile after slag tapping to obtain a 3D model of the slag pile after slag tapping;
and S23, obtaining the volume V2 of the slag pile after slag tapping from the 3D model of the slag pile after slag tapping.
4. The blast furnace tapping weight detection method according to claim 1, characterized in that: the value range of the density of the slag water slag is gamma t/m3～δt/m3。
5. The blast furnace tapping weight detection method according to claim 1, characterized in that: the water content m of the discharged slagWater (W)Comprises the following steps:
mwater (W)＝mSlag×εWater (W)；
Wherein m isSlagThe weight of the slag water slag is taken as the weight of the slag water slag; epsilonWater (W)The water content of the slag water is shown.
6. The utility model provides a blast furnace slag tapping weight detecting system which characterized in that: the device comprises a slag pile detection unit, a slag pile data preprocessing unit, a water slag detection unit and a slag discharging data processing unit;
the slag pile detection unit comprises a slag grabbing crane arranged above the slag pile and a 3D scanning device arranged on the slag grabbing crane; the 3D scanning device is used for collecting 3D data information of the slag pile;
the slag pile data preprocessing unit comprises an industrial personal computer; the industrial personal computer is in communication connection with the 3D scanning device; the industrial personal computer is used for receiving the 3D data information of the slag pile and preprocessing the 3D data information of the slag pile;
the granulated slag detection unit comprises a granulated slag outward conveying device and a moisture detection device arranged on the granulated slag outward conveying device; the moisture detection device is used for detecting the moisture content information of the discharged water slag;
the slag discharging data processing unit is respectively in communication connection with the industrial personal computer and the moisture detection device, and the slag discharging data unit is used for calculating the slag discharging volume according to the 3D data information after pretreatment and calculating the slag discharging weight according to the moisture content information of the slag discharging water slag.
7. The blast furnace tapping weight detection system according to claim 6, wherein: the 3D scanning device comprises a 3D laser scanner; the 3D laser scanner adopts high protection level and compressed air to sweep the device.
8. The blast furnace tapping weight detection system according to claim 7, wherein: the 3D laser scanner is not less than one set.
9. The blast furnace tapping weight detection system according to claim 6, wherein: the industrial personal computer is an embedded industrial personal computer; the embedded industrial personal computer is arranged on the slag grabbing crane.
10. The blast furnace tapping weight detection system according to claim 6, wherein: the moisture detection device comprises a material moisture detector.
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| CN202111406375.4A CN114231683A (en) | 2021-11-24 | 2021-11-24 | Blast furnace slag tapping weight detection method and system |
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| CN202111406375.4A CN114231683A (en) | 2021-11-24 | 2021-11-24 | Blast furnace slag tapping weight detection method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11131124A (en) * | 1997-10-29 | 1999-05-18 | Nippon Steel Corp | Method of measuring flowing-out quantity of slag |
| JP2001343343A (en) * | 2000-06-02 | 2001-12-14 | Fukuoka Prefecture | Water content detection sensor and moisture content measuring method using the same |
| CN108779504A (en) * | 2016-07-27 | 2018-11-09 | 新日铁住金株式会社 | Deslagging weight method of estimating rate and deslagging weight estimating device |
| WO2020129887A1 (en) * | 2018-12-17 | 2020-06-25 | 日本製鉄株式会社 | Method and apparatus for estimating amount of residual slag in furnace |
| JP2020112429A (en) * | 2019-01-11 | 2020-07-27 | 日本製鉄株式会社 | Slag quantification method |
| CN112082473A (en) * | 2019-06-12 | 2020-12-15 | 湖南釜晟智能科技有限责任公司 | Steel slag stock ground three-dimensional data acquisition imaging system and method |
| CN113528737A (en) * | 2020-03-31 | 2021-10-22 | 宝山钢铁股份有限公司 | Automatic slag pouring method and system for converter slag retention process based on image recognition |
-
2021
- 2021-11-24 CN CN202111406375.4A patent/CN114231683A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11131124A (en) * | 1997-10-29 | 1999-05-18 | Nippon Steel Corp | Method of measuring flowing-out quantity of slag |
| JP2001343343A (en) * | 2000-06-02 | 2001-12-14 | Fukuoka Prefecture | Water content detection sensor and moisture content measuring method using the same |
| CN108779504A (en) * | 2016-07-27 | 2018-11-09 | 新日铁住金株式会社 | Deslagging weight method of estimating rate and deslagging weight estimating device |
| WO2020129887A1 (en) * | 2018-12-17 | 2020-06-25 | 日本製鉄株式会社 | Method and apparatus for estimating amount of residual slag in furnace |
| JP2020112429A (en) * | 2019-01-11 | 2020-07-27 | 日本製鉄株式会社 | Slag quantification method |
| CN112082473A (en) * | 2019-06-12 | 2020-12-15 | 湖南釜晟智能科技有限责任公司 | Steel slag stock ground three-dimensional data acquisition imaging system and method |
| CN113528737A (en) * | 2020-03-31 | 2021-10-22 | 宝山钢铁股份有限公司 | Automatic slag pouring method and system for converter slag retention process based on image recognition |
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Application publication date: 20220325 |