CN113788406B - Method for identifying slag ladle position state in slow cooling field - Google Patents
Method for identifying slag ladle position state in slow cooling field Download PDFInfo
- Publication number
- CN113788406B CN113788406B CN202110966773.5A CN202110966773A CN113788406B CN 113788406 B CN113788406 B CN 113788406B CN 202110966773 A CN202110966773 A CN 202110966773A CN 113788406 B CN113788406 B CN 113788406B
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- state
- slag ladle
- ladle position
- current
- lifting hook
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- 239000002893 slag Substances 0.000 title claims abstract description 161
- 238000010583 slow cooling Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000001174 ascending effect Effects 0.000 claims description 15
- 239000000523 sample Substances 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003818 cinder Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009847 ladle furnace Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/10—Slag pots; Slag cars
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Furnace Details (AREA)
Abstract
The invention belongs to the technical field of smelting, and particularly relates to a method for identifying a slag ladle position state in a slow cooling field, wherein coordinates of a cart and a trolley are matched with the slag ladle position in the slow cooling field when a gantry crane stops after being displaced; if the matching fails, the matching is performed again when the trolley stops after the next displacement; if the matching is successful, marking the slag ladle position as the current slag ladle position, and updating the state of the current slag ladle position according to the historical state of the current slag ladle position and the operation condition of the lifting hook. According to the invention, no mark is additionally arranged at the position of the slag ladle or on the slag ladle, after the coordinates of the cart, the trolley and the slag ladle position on the portal crane are matched, the state change of the corresponding slag ladle position is recorded in time when the portal crane carries out transfer operation, so that the real-time and accurate synchronization of the slag ladle position state can be realized with high efficiency and low cost, and the production accidents caused by the errors of placing and taking the slag ladle are avoided.
Description
Technical Field
The invention belongs to the technical field of smelting, and particularly relates to a method for identifying a slag ladle position state in a slow cooling field.
Background
Mineral raw materials are gradually deficient while the smelting technology in China is rapidly developed, and the process of concentrating and recovering valuable metals after slowly cooling smelting slag is gradually becoming a mainstream process for treating copper smelting slag in order to improve the comprehensive utilization rate of resources. When the slag is slowly cooled, the slag is naturally slowly cooled in a slow cooling field, and when the slag is cooled to a target temperature, cooling water is sprayed to the slag ladle, so that the cooling speed of the slag ladle is accelerated, crystallization is promoted to be separated out, larger crystals are obtained, and the subsequent mineral separation is facilitated.
The slag ladle positions in the slow cooling field are numerous, the temperature of the slag ladle is up to 1000 ℃, potential safety hazards exist in manual recording and monitoring of the slow cooling state, the information transmission efficiency is low, and the problem that the slag ladle is too high in temperature when spraying and the red ladle appears when the slag ladle is in place due to slow cooling is easy. In order to solve the problems, chinese patent CN106406146A discloses an intelligent control system and a method for a slag slow cooling process, wherein the method numbers slag bags, and during bag placing and taking operations, identification and comparison are carried out on slag bag labels to prevent wrong slag bag taking, however, the temperature of the slag bags is high during use, and the humidity of a slag bag slow cooling place is high, so that the slag bag labels are high in cost, easy to damage and difficult to identify; the method is used for presetting a time period, when the natural cooling time reaches a set value, the spray water is automatically started to accelerate the cooling speed, and when the spray cooling time reaches the preset value, the spray water is automatically closed by the system, however, under the conditions of different seasons and different weather, the natural cooling time and the spray water cooling time are different, and the same preset time is adopted, so that the high-efficiency, safe and slow cooling of the slag ladle still cannot be ensured.
Disclosure of Invention
The invention aims to provide a recognition method capable of accurately and reliably knowing the slag ladle position state in a slow cooling field.
In order to achieve the above purpose, the invention adopts the following technical scheme: the method for recognizing the slag ladle position state in the slow cooling field comprises the steps of matching the coordinates of a cart and a trolley with the slag ladle position in the slow cooling field when the gantry crane stops after being displaced; if the matching fails, the matching is performed again when the trolley stops after the next displacement; if the matching is successful, marking the slag ladle position as the current slag ladle position, and updating the state of the current slag ladle position according to the historical state of the current slag ladle position and the operation condition of the lifting hook.
Compared with the prior art, the invention has the following technical effects: the position of the slag ladle or the slag ladle is not required to be additionally provided with a mark, after the coordinates of the cart, the trolley and the slag ladle position on the portal crane are matched, the state change of the corresponding slag ladle position is recorded in time when the portal crane carries out transfer operation, the real-time and accurate synchronization of the state of the slag ladle position can be realized with high efficiency and low cost, and production accidents caused by error bag placing and taking are avoided.
Drawings
The contents expressed in the drawings of the present specification and the marks in the drawings are briefly described as follows:
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is an elevational schematic of the present invention;
in the figure: 10. gantry crane, 11. Cart, 12. Trolley, 13. Lifting hook, 20. Cinder ladle, 21. Cinder ladle position, 21a. Current cinder ladle position, 22. Cinder ladle position matching area.
Detailed Description
The following describes the embodiments of the present invention in further detail by way of examples with reference to figures 1 and 2.
A method for identifying the slag ladle position state in a slow cooling field adopts a gantry crane 10 to transport slag ladles 20. After the gantry crane 10 is shifted to the target position, when the cart 11 and the trolley 12 are in a stop state, the coordinates of the cart 11 and the trolley 12 are matched with the slag ladle position 21 in the slow cooling field,
if the matching fails, the current stop position of the trolley 12 on the gantry crane 10 deviates from the slag ladle position 21, the transfer operation of the slag ladle 20 cannot be performed, and the state change of the slag ladle position 21 caused by the transfer of the slag ladle 20 cannot occur, so that the trolley 12 is matched again when stopped after next displacement;
if the matching is successful, it is indicated that the current stop position of the trolley 12 on the gantry crane 10 is within the operation range of the ladle position 21, and the transfer operation of the ladle 20 can be performed, so that the ladle position 21 is marked as the current ladle position 21a, and then the state of the current ladle position 21a is updated according to the history state of the current ladle position 21a and the operation condition of the lifting hook 13. Therefore, when the gantry crane 10 carries out slag ladle transferring operation, the state change of the corresponding slag ladle position 21 can be recorded in real time, so that the state of the slag ladle position is timely and accurately synchronous, and the safe and reliable completion of the slow cooling operation is ensured.
Depending on the load on the hooks 13, they can be classified as no pack, empty pack or full pack. Since the slag ladle 20 is made of a fixed material, size and shape, the weight of the slag ladle 20 is relatively fixed when the slag ladle 20 is loaded with slag and unloaded, the slag ladle is determined to be empty when the lifting hook 13 is unloaded, the slag ladle is determined to be empty when the load on the lifting hook 13 matches the weight of the slag ladle 20, and the slag ladle is determined to be full when the load on the lifting hook 13 matches the weight of the slag ladle 20 when the slag ladle is fully loaded with slag.
The ladle bit 21 comprises four states: no bag, no empty bag, air cooling and water cooling. When the slag ladle 20 is not placed in the slag ladle position 21, judging that the slag ladle is in a ladle-free state; when the slag ladle 20 placed in the slag ladle position 21 is empty, judging that the slag ladle is in an empty ladle state; when the slag ladle 20 is placed in the slag ladle position 21 and the slag ladle 20 is naturally and slowly cooled, determining that the slag ladle is in an air cooling state; when the slag ladle 20 is placed in the slag ladle position 21 and cooling water sprays the slag ladle 20, it is determined that the slag ladle is in a water-cooled state.
The history state includes a last updated state of the ladle bit 21, and defines the last updated state of the ladle bit 21 as a last history state. The initial state of the ladle bit 21 is ladle-less.
In this embodiment, after the matching is successful, the hook 13 is guided to act according to the current state of the slag ladle position 21a and the load condition of the hook 13. I.e. step B11, if the current ladle position 21a is not in the ladle-less state and the state of the hook 13 is empty or full, the maximum lowering position of the hook 13 is defined. The safety accident caused by the contact of the suspended slag ladle 20 and the slag ladle 20 positioned in the current slag ladle position 21a due to the descending of the lifting hook 13 suspended with the slag ladle 20 is avoided.
And then the state of the current slag ladle position 21a is updated according to the historical state of the current slag ladle position 21a and the opening condition of the spray ball valve. That is, in step B21, if the current ladle position 21a has a recent history of air cooling and the corresponding shower ball valve is opened, the current ladle position 21a is updated to be water-cooled. Further, the ladle furnace 21 also includes a slow cooling completion condition. That is, step B21 further includes, if the current ladle position 21a has a recent history of water cooling and the corresponding shower ball valve is closed, updating the current ladle position 21a to be slow cooling.
Finally, the current ladle position 21a is updated according to the load conditions of the lifting hook 13 during descending and ascending. Specifically comprises the following steps of,
b31, when the lifting hook 13 descends, recording the weight on the lifting hook 13 and marking the descending state of the lifting hook 13;
b32, when the lifting hook 13 ascends, recording the weight on the lifting hook 13 and marking the ascending state of the lifting hook 13;
b33, if the descending state and the ascending state of the lifting hook 13 are consistent, the state of the current slag ladle position 21a is unchanged;
if the descending state of the lifting hook 13 is no packet, and the ascending state is empty packet or full packet, the state of the current slag ladle position 21a is updated to be no packet;
if the descending state of the lifting hook 13 is empty and the ascending state is no bag, the state of the current slag ladle position 21a is updated to be empty;
if the descending state of the lifting hook 13 is full, and the ascending state is no, the current state of the slag ladle position 21a is updated to air cooling;
if the descending state and the ascending state of the lifting hook 13 are other conditions, the current state of the lifting hook 13 is calibrated.
Further, the state of the current ladle position 21a is determined in combination with the lowered state of the hook 13 and the calibrated current state. That is, in step B33, if the descending state and the ascending state of the hook 13 are other conditions, the current state of the hook 13 is calibrated, and the process proceeds to step B41:
if the descending state of the lifting hook 13 is full, and the calibrated current state is no bag, updating the state of the current slag ladle position 21a into air cooling;
if the descending state of the lifting hook 13 is full, and the calibrated current state is full, the state of the current slag ladle position 21a is unchanged;
if the descending state of the lifting hook 13 is empty and the calibrated current state is no packet, updating the state of the current slag ladle position 21a to be empty;
if the descending state of the lifting hook 13 is empty and the calibrated current state is empty, the state of the current slag ladle position 21a is unchanged.
Further, if the descending state of the hook 13 and the calibrated current state are other conditions, the current state of the ladle bit 21a is manually determined in combination with the current state, the history state of the hook 13 and the history state of the current ladle bit 21a. The history here includes updated records of the status of the hooks 12, ladle bits 21.
In other embodiments, after the coordinates of the cart 11 and the cart 12 are successfully matched with the slag ladle position 21 in the slow cooling field, the step B11 may be omitted, the step B21 may be directly performed, or the steps B11 and B21 may be omitted, and the step B31 may be directly performed.
In another embodiment, step B21 may be replaced by omitting step B21 and collecting information and updating the status of each ladle position 21 during the travel of gantry crane 10. The method specifically comprises the following steps:
in the running process of the gantry crane 10, a temperature probe 30 arranged on the cart 12 acquires infrared image information, acquires a temperature value of a slag ladle passing through the slag ladle position 21 by combining the coordinate information of the cart support leg 12, and updates the state of the slag ladle position 21 by combining the opening and closing conditions of a spray water valve corresponding to the slag ladle position 21;
when the measured temperature value of the slag ladle in the slag ladle position 21 is lower than the water cooling set value, if the latest historical state of the slag ladle position 21 is that the spray water ball valve corresponding to the air cooling is in a closed state, opening the spray water ball valve of the slag ladle position 21 and updating the state of the slag ladle position 21 into water cooling;
when the temperature value of the slag ladle in the slag ladle position 21 is lower than the slow cooling set value, if the recent history state of the slag ladle position 21 is water-cooled and the corresponding spray ball valve is in an open state, the spray ball valve of the slag ladle position 21 is closed, and the state of the slag ladle position 21 is updated to be slow cooling.
Before recognizing the slag ladle position state in the slow cooling pool, the cart 11, the trolley 12 and the lifting hook 13 of the portal crane 10 are driven to displace, coordinates of the cart 11 and the trolley 12 when the lifting hook 13 is positioned at the center point of each slag ladle position 21 in the slow cooling pool are sequentially collected and marked, and a slag ladle position matching area 22 of each slag ladle position 21 is obtained according to the coordinates. In other embodiments, the ladle bit matching areas 22 of each ladle bit 21 may also be artificially marked according to the arrangement of the quenching fields.
Claims (7)
1. A method for identifying the slag ladle position state in a slow cooling field is characterized by comprising the following steps of: when the gantry crane (10) stops after displacement, the coordinates of the cart (11) and the trolley (12) are matched with the slag ladle position (21) in the slow cooling field; if the matching fails, the matching is performed again when the trolley (12) stops after the next displacement; if the matching is successful, marking the slag ladle position (21) as the current slag ladle position (21 a), and updating the state of the current slag ladle position (21 a) according to the historical state of the current slag ladle position (21 a) and the operation condition of the lifting hook (13);
according to the load situation, the lifting hook (13) comprises the following three states: no pack, empty pack or full pack; the ladle bit (21) comprises four states: the initial state of the slag ladle position (21) is no ladle; the history state comprises the state of the last update of the slag ladle position (21);
after the matching is successful, guiding the lifting hook (13) to act according to the state of the current slag ladle position (21 a) and the loading condition of the lifting hook (13); if the current ladle position (21 a) is empty, air-cooled or water-cooled and the state of the lifting hook (13) is empty or full, the maximum descending position of the lifting hook (13) is limited.
2. The method for identifying the slag ladle position state in the slow cooling field according to claim 1, wherein the method comprises the following steps: after successful matching, the state of the current slag ladle position (21 a) is updated according to the load condition of the lifting hook (13) during descending and ascending;
specifically comprises the following steps of,
b31, when the lifting hook (13) descends, recording the weight on the lifting hook (13) and marking the descending state of the lifting hook (13);
b32, when the lifting hook (13) ascends, recording the weight on the lifting hook (13) and marking the ascending state of the lifting hook (13);
b33, if the descending state of the lifting hook (13) is consistent with the ascending state, the state of the current slag ladle position (21 a) is unchanged;
if the descending state of the lifting hook (13) is no packet, and the ascending state is empty packet or full packet, the state of the current slag ladle position (21 a) is updated to be no packet;
if the descending state of the lifting hook (13) is empty and the ascending state is no bag, the state of the current slag ladle position (21 a) is updated to be empty;
if the descending state of the lifting hook (13) is full, and the ascending state is no, the state of the current slag ladle position (21 a) is updated to air cooling;
and if the descending state and the ascending state of the lifting hook (13) are other conditions, calibrating the state of the lifting hook (13).
3. The method for identifying the slag ladle position state in the slow cooling field according to claim 2, wherein the method comprises the following steps: in the step B33, the state of the current slag ladle position (21 a) is judged by combining the descending state of the lifting hook (13) and the current state obtained by calibration;
if the descending state of the lifting hook (13) is full, and the current state after calibration is no bag, updating the state of the current slag ladle position (21 a) into air cooling;
if the descending state of the lifting hook (13) is full, and the current state after calibration is full, the state of the current slag ladle position (21 a) is unchanged;
if the descending state of the lifting hook (13) is empty, and the calibrated current state is no bag, updating the state of the current slag ladle position (21 a) into the empty bag;
if the descending state of the lifting hook (13) is empty, and the current state after calibration is empty, the state of the current slag ladle position (21 a) is unchanged.
4. The method for identifying the slag ladle position state in the slow cooling field according to claim 1, wherein the method comprises the following steps: after successful matching, the state of the current slag ladle position (21 a) is updated according to the historical state of the current slag ladle position (21 a) and the opening condition of the spray ball valve.
5. The method for identifying the slag ladle position state in a slow cooling field according to claim 4, wherein the method comprises the following steps: the slag ladle position (21) also comprises a slow cooling completion state;
if the current historical state of the slag ladle position (21 a) is air-cooled and the corresponding spray water ball valve is in an open state, updating the state of the current slag ladle position (21 a) into water-cooled state; if the current historical state of the ladle position (21 a) is water-cooled and the corresponding spray water ball valve is in a closed state, updating the current state of the ladle position (21 a) to be slow cooling.
6. The method for identifying the slag ladle position state in the slow cooling field according to claim 1, wherein the method comprises the following steps: in the running process of the gantry crane (10), a temperature measuring probe (30) arranged on a cart (12) collects infrared image information, a temperature value of a slag ladle passing through the slag ladle position (21) is obtained by combining the coordinate information of the cart supporting legs (12), and the state of the slag ladle position (21) is updated by combining the opening and closing conditions of a spray water valve corresponding to the slag ladle position (21);
the slag ladle position (21) also comprises a slow cooling completion state;
when the measured temperature value of the slag ladle in the slag ladle position (21) is lower than a water cooling set value, if the latest historical state of the slag ladle position (21) is that a spray water ball valve corresponding to the air cooling is in a closed state, opening the spray water ball valve of the slag ladle position (21) and updating the state of the slag ladle position (21) into water cooling;
when the measured temperature value of the slag ladle in the slag ladle position (21) is lower than the slow cooling set value, if the latest historical state of the slag ladle position (21) is water-cooled and the corresponding spray water ball valve is in an open state, closing the spray water ball valve of the slag ladle position (21) and updating the state of the slag ladle position (21) to be slow cooling.
7. The method for identifying the slag ladle position state in the slow cooling field according to claim 1, wherein the method comprises the following steps: and driving the displacement of the cart (11), the trolley (12) and the lifting hook (13) of the portal crane (10), and sequentially collecting and marking the coordinates of the cart (11) and the trolley (12) when the lifting hook (13) is positioned at the center point of each slag ladle position (21) in the slow cooling field.
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| CN202110966773.5A CN113788406B (en) | 2021-08-23 | 2021-08-23 | Method for identifying slag ladle position state in slow cooling field |
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| CN117314126B (en) * | 2023-11-28 | 2024-02-06 | 中国恩菲工程技术有限公司 | Control method, device, equipment and medium for copper smelting intelligent slag slow cooling field |
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| CN109534165A (en) * | 2018-12-12 | 2019-03-29 | 株洲天桥起重机股份有限公司 | A kind of smelting cinder ladle slow cooling processing dispatch control method |
| CN212505020U (en) * | 2020-06-28 | 2021-02-09 | 易门铜业有限公司 | Intelligent slow cooling device for high-temperature melt |
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2021
- 2021-08-23 CN CN202110966773.5A patent/CN113788406B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102471827A (en) * | 2009-12-30 | 2012-05-23 | 现代制铁株式会社 | Method and apparatus for recovering valuable metals from slag and manufacturing multifunctional aggregate |
| CN104561560A (en) * | 2013-10-12 | 2015-04-29 | 中冶宝钢技术服务有限公司 | Copper slag slowly-cooling treatment technology |
| CN104085638A (en) * | 2014-07-15 | 2014-10-08 | 江苏沙钢集团有限公司 | Tail end logistics radio frequency identification positioning position fitting method for steel production |
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| CN212505020U (en) * | 2020-06-28 | 2021-02-09 | 易门铜业有限公司 | Intelligent slow cooling device for high-temperature melt |
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