High temperature melt slow cooling device and slag bag temperature measurement method

Abstract

The present invention belongs to the field of metallurgical technology, and particularly relates to a high-temperature melt slow cooling device and a slag bag temperature measurement method. The side of the track of the gantry crane is a slow cooling zone for stacking slag bags, and the legs of the gantry crane are provided with temperature measuring probes, which point obliquely downward to the side wall of the slag bag in the slow cooling zone. In this way, during the transfer operation of the gantry crane, the temperature measuring probes arranged on the legs can detect the side wall of the slag bag beside its travel path, so as to achieve non-stop temperature measurement, with high temperature measurement efficiency and reliable temperature measurement results.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to a high-temperature melt slow cooling device and a slag bag temperature measuring method. Background Art

[0002] While my country's smelting technology is developing rapidly, mineral raw materials are becoming increasingly scarce. In order to improve the comprehensive utilization rate of resources, slow cooling of smelting slag and subsequent mineral processing to recover valuable metals has gradually become the mainstream process for treating copper smelting slag. When slowly cooling the slag, first naturally slow cool it in the slow cooling field. When the slag is cooled to the target temperature, spray cooling water on the slag bag to speed up its cooling speed and promote crystallization to obtain larger crystals, which is beneficial to subsequent mineral processing. Timely understanding of the temperature of each slag bag can be used to determine whether to enter the water cooling stage, the remaining cooling time, and optimize the slag slow cooling process.

[0003] Chinese patent CN106319113A discloses a slag ladle cooling device, in which an infrared temperature measuring device is arranged on the top of the slag ladle through a support frame. Since there may be a temperature difference between the top and bottom of the slag ladle, and during the water cooling process, the upper layer of the slag in the slag ladle is filled with cooling water, the temperature data measured by the infrared temperature measuring device from the top of the slag ladle cannot be used to judge the slow cooling of the slag.

[0004] Chinese patent CN212112204U discloses an efficient slag yard automatic monitoring system, including a gantry, an infrared thermometer is arranged on the second side of the gantry near the cooling position of the slag bag, and the infrared thermometer is arranged directly opposite to the side wall of the slag bag. Since the infrared thermometer is only arranged on one side of the gantry, if it is necessary to measure the temperature of the slag bag located far away from the second side of the gantry, it can only be hoisted to the temperature measurement position to measure the temperature of the slag bag, and the temperature measurement efficiency is low. In addition, the slag bag is frequently hoisted and placed during temperature measurement, which not only has a large workload, but also is prone to misplacement of the bag, resulting in insufficient natural cooling time, and causing the bag to burst after spraying cooling water. Summary of the invention

[0005] The object of the present invention is to provide a high-temperature melt slow cooling device and a slag bag temperature measuring method, which can measure the slag bag temperature efficiently and accurately.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is:

[0007] A high-temperature melt slow cooling device, the side of the gantry crane track is a slow cooling zone for stacking slag bags, the legs of the gantry crane are provided with temperature probes, the temperature probes are obliquely pointed downward to the side wall of the slag bag in the slow cooling zone.

[0008] The slag ladle temperature measurement method using the above-mentioned high temperature melt slow cooling device:

[0009] A. During the travel of the gantry crane, the temperature measuring probe collects the temperature image to be measured;

[0010] B. Analyze the temperature image to be measured and identify the effective area in the image;

[0011] C. Divide the effective area into several temperature measurement zones and obtain the temperature value of each temperature measurement zone;

[0012] D. Calculate the current temperature value of the slag bag to be measured based on the temperature values ​​of each temperature measurement zone.

[0013] Compared with the prior art, the present invention has the following technical effects: during the transfer operation of the gantry crane, the temperature measuring probe arranged on the support leg can detect the side wall of the slag bag beside its travel path, realizing non-stop temperature measurement, with high temperature measurement efficiency and reliable temperature measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following is a brief description of the contents and symbols in the drawings of this specification:

[0015] Figure 1 , 2 is a top view schematic diagram of the present invention;

[0016] Figure 3 , 4 It is a schematic elevation view of the present invention.

[0017] In the figure: 10. gantry crane, 11. track, 12. outrigger, 20. slag bag storage area, 30. temperature measuring probe, 41. spray port, 42. spray pipe column, 51. slag bag transfer platform, 52. transfer track, 53. slag dumping platform. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described in detail below through description of embodiments in conjunction with the accompanying drawings.

[0019] A high-temperature melt slow cooling device, the side of the track 11 of the gantry crane 10 is a slow cooling zone 20 for stacking slag bags A, and the legs 12 of the gantry crane 10 are provided with temperature probes 30, which are obliquely pointed downward to the side wall of the slag bag A in the slow cooling zone 20. In this way, the temperature information of the side wall of the slag bag A can be effectively collected when the distance between the slag bag A and the legs 12 is small, and the temperature probe 30 is located above the slag bag A, which can prevent the sprayed or overflowed cooling water from splashing and adhering to the temperature probe 30 to affect the temperature measurement effect.

[0020] As attached Figure 1-4As shown, in this embodiment, the slag bags A in the slag bag stacking area 20 are arranged in sequence along the extension direction of the track 11 to form a slag bag row, and one temperature measuring probe 30 can only detect and measure the temperature of a single slag bag row. A spray device is provided on the side of the slag bag A, including a spray port 41 located above the slag bag A and a spray column 42 standing on the side of the slag bag A. Cooling water flows from the spray port 41 to the upper opening of the slag bag A, and the cooling water overflows along the side wall of the slag bag A to fully cool the slag bag A.

[0021] In order to make the temperature measuring probe 30 fully obtain the temperature information of the side wall of the slag bag A and ensure the reliability of the measured temperature, the lowest point of the detection range of the temperature measuring probe 30 is not higher than 1 / 4 of the height of the slag bag A, that is, the side wall of the slag bag A above 1 / 4 of the height from the bottom should be located within the detection range of the temperature measuring probe 30. The core axis of the temperature measuring probe 30 and the plumb bob are arranged at an angle so that the temperature measuring probe 30 is slightly tilted forward or backward. When the spray pipe column 42 is located between the slag bag A and the gantry crane track 11, the spray pipe column 42 can be avoided to measure the temperature of the slag bag A.

[0022] The slag ladle temperature measurement method using the above-mentioned high-temperature melt slow cooling device comprises the following steps:

[0023] A. During the travel of the gantry crane 10, the temperature measuring probe 30 collects the temperature image to be measured; to avoid redundancy of temperature measurement information, when the parking time of the gantry crane 10 exceeds the preset standby time, the temperature measuring probe 30 stops the image collection work.

[0024] B. Analyze the temperature image to be measured and identify the effective area in the image;

[0025] In this embodiment, the effective temperature measurement area is the side wall of the slag ladle to be measured in the temperature measurement image.

[0026] A preferred solution is to regard the area in the image to be measured temperature which is consistent with the contour of the side wall of the slag ladle and has a temperature higher than 50° C. as the side wall of the slag ladle to be measured temperature.

[0027] In other solutions, the area with an average temperature higher than 50° C. and occupying the largest area in the image may also be regarded as the side wall of the slag ladle to be measured in temperature.

[0028] C. Divide the effective area into several temperature measurement zones and obtain the temperature value of each temperature measurement zone; among which, the highest temperature measured in each temperature measurement zone is the temperature value of the temperature measurement zone.

[0029] To ensure the reliability of the temperature measurement value, the effective area is divided into at least 3 temperature measurement zones. In the water cooling stage, to avoid the overflow of cooling water flow affecting the accuracy of temperature measurement, the effective area is divided into at least 10 temperature measurement zones, and the number of temperature measurement zones increases with the increase of cooling water flow.

[0030] D. Calculate the current temperature value of the slag bag to be measured according to the temperature values ​​of each temperature measurement zone. In this embodiment, the average of the temperature values ​​of each temperature measurement zone is calculated to obtain the current temperature value of the slag bag to be measured.

Claims

1. A method for measuring the temperature of a slag bag of a high-temperature melt slow cooling device, comprising the following steps: A. During the travel of the gantry crane (10), the temperature measuring probe (30) collects an image to be measured; B. Analyze the temperature image to be measured and identify the effective area in the image; C. Divide the effective area into several temperature measurement zones and obtain the temperature value of each temperature measurement zone; D. Calculate the current temperature value of the slag bag to be measured according to the temperature values ​​of each temperature measurement zone; In the high-temperature melt slow cooling device, a slow cooling zone (20) for stacking a slag bag (A) is provided next to a track (11) of a gantry crane (10), and a temperature measuring probe (30) is provided on a support leg (12) of the gantry crane (10), and the temperature measuring probe (30) is obliquely downwardly pointed toward a side wall of the slag bag (A) in the slow cooling zone (20).

2. The slag ladle temperature measurement method of the high-temperature melt slow cooling device according to claim 1, Features: The slag bags (A) are arranged along the extension direction of the track (11) to form a slag bag row, and a temperature measuring probe (30) detects and measures the temperature of a single slag bag row.

3. The slag ladle temperature measurement method of the high-temperature melt slow cooling device according to claim 1, Features: The lowest point of the detection range of the temperature measuring probe (30) is no higher than 1 / 4 of the height of the slag bag (A).

4. The slag ladle temperature measurement method of the high-temperature melt slow cooling device according to claim 1, Features: The lens axis of the temperature measuring probe (30) is arranged at an angle to the plumb line.

5. The slag ladle temperature measurement method according to any one of claims 1 to 4, Features: In the step A, after the gantry crane (10) stops for a period of time exceeding a preset standby time, the temperature measuring probe (30) stops collecting images.

6. The slag ladle temperature measurement method according to any one of claims 1 to 4, Features: In the step B, the effective area is the side wall of the slag ladle to be measured.

7. The slag ladle temperature measurement method according to claim 6, Features: In the step B, the area in the temperature-measured image that matches the contour of the slag ladle and has a temperature higher than 50° C. is regarded as the side wall of the slag ladle to be temperature-measured.

8. The slag ladle temperature measurement method according to any one of claims 1 to 4, Features: In the step C, the effective area is divided into at least 3 temperature measurement zones; in the water cooling stage, the effective area is divided into at least 10 temperature measurement zones, and the number of temperature measurement zones increases with the increase of cooling water flow.

9. The slag ladle temperature measurement method according to any one of claims 1 to 4, Features: In the step C, the highest temperature value measured in each temperature measuring zone is the temperature value of the temperature measuring zone; in the step D, the average of the temperature values ​​of each temperature measuring zone is calculated to obtain the current temperature value of the slag bag to be measured.

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