Thermal state matte package accelerated cooling device

Abstract

An accelerated cooling device for a hot-state matte bag comprises a DCS (Distributed Control System) control unit, a matte bag box, a high-pressure atomization water cooling device, a rail flat trolley and an electric roller shutter door. According to the device, by additionally arranging the thermal state matte package box, the problems of high traveling operation frequency and low-altitude flue gas caused by temporary placement of the thermal state matte package box are solved. And a high-pressure atomization water cooling device is arranged, a proper cooling method is adopted, and the water cooling speed of the hot matte ladle is increased, so that the impact frequency of the ladle when a travelling crane turns over the ladle is reduced, the turnover of the ladle is accelerated, the time of breaking beryllium by the furnace mouth cleaning machine is shortened, and the labor intensity of personnel is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of non-ferrous metal metallurgy and relates to an accelerated cooling device for hot copper matte. Background Technology

[0002] With continuous economic development, the use of environmental resources has increased dramatically, making environmental protection issues increasingly important.

[0003] A large-scale pyrometallurgical copper smelting plant in China employs a main smelting process consisting of a flash furnace, a PS converter, a rotary anode furnace, and a Kaldor furnace, with overhead cranes used for material transfer. Due to limitations in process conditions, low-concentration SO2 flue gas can easily escape during processes such as converter feeding, overhead crane transport of hot materials, converter start-up and shutdown operations, hot matte ladle turning, and converter blowing. This can affect the air quality of the main plant and surrounding environment, and may even endanger the safety and occupational health of on-site operators.

[0004] Specifically, the environmental pollution generated by the overturning of hot matte mainly comes from the sulfur-containing fumes produced during the natural air cooling of the hot matte and the large amount of dust generated by the excessive impacts from the overturning process. Furthermore, the repeated impacts from the overturning also increase the workload of workers and cause serious noise pollution. Utility Model Content

[0005] The purpose of this invention is to provide a device that can solve the above-mentioned problems without requiring significant changes to the original process and equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions: First, through experiments, it was found that intermittent high-pressure atomized water cooling can make the cladding shell easier to separate; second, by setting up a hot copper matte cladding chamber, the sulfur-containing fumes escaping during cooling are resolved; and third, the turnover of the copper matte cladding is accelerated by atomized water cooling.

[0007] The DCS control cabinet is located on the side of the compartment, and the rail-mounted flatbed trolley is arranged parallel to the ground track.

[0008] Preferably, to facilitate the rapid transport of hot copper cladding by the crane, the bearing surface of the track flat trolley 4 does not have a barrier, but a warning zone is set around the entire device to improve the efficiency of crane operation while ensuring safety.

[0009] Preferably, this device is equipped with a DCS control cabinet 1 to control the interlocking operation of the track flat trolley 4 and the electric roller shutter door 5, and to control the start and stop time of the high-pressure atomizing water cooling device.

[0010] Preferably, the high-pressure atomizing water cooling device 3 adopts a "concentric circle" double circular nozzle layout, which can better fit the hot copper foil rapid cooling area.

[0011] Preferably, the concentric double-ring arrangement is not limited to a strictly geometric circle, but includes an approximate circle or other closed ring arrangement.

[0012] Preferably, the high-pressure atomizing water-cooling device 3 adopts an inner and outer double ring arrangement, with a distance of 200mm between the inner and outer rings and a corresponding outer ring diameter of 1200mm, and 50 fan-shaped nozzles 7 are evenly distributed in each ring.

[0013] Preferably, the main pipe diameter is DN50, and the nozzles 7 are radially and uniformly distributed.

[0014] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0015] This utility model provides an accelerated cooling device for hot copper matte, which is highly practical, energy-saving and environmentally friendly, with low project implementation costs. It greatly solves the problem of flue gas escaping during the natural cooling of hot copper matte and effectively reduces the labor intensity of workers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a hot copper cladding accelerated cooling device according to the present invention.

[0017] Figure 2 This is a schematic diagram of the high-pressure atomizing water-cooling device of this utility model.

[0018] Attached reference numerals: 1. DCS control unit; 2. Copper-clad compartment; 3. High-pressure atomizing water-cooling device; 4. Tracked flatbed trolley; 5. Electric roller shutter door assembly; 6. Main pipe; 7. Nozzle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2 A device for rapidly cooling hot copper matte cladding is provided, which changes the cladding state by rapidly cooling the hot copper matte cladding without causing large-scale shutdown or damage to the original process and equipment.

[0021] Working principle: After the overhead crane lifts the hot copper matte ladles onto the rail flatbed trolley 4, the device is started through the DCS control system 1. The trolley then moves the hot copper matte ladles at a constant speed into the copper matte ladle compartment 2. Subsequently, the electric roller shutter door 5 automatically closes after receiving a signal. At this time, the corresponding cooling time can be set according to the weight of the hot copper matte ladles fed back by the overhead crane. Under the action of the high-pressure atomizing water cooling device 3, the hot copper matte ladles are rapidly cooled and then transported out of the copper matte ladle compartment by the rail flatbed trolley 4. The overhead crane then transports the ladles to a designated location for repacking.

[0022] The optimal operating water pressure for the high-pressure atomizing water cooling device is 4 MPa, the inner and outer ring spacing is 200 mm, the spray angle of nozzle 7 is 40 ± 2°, and the flow rate of a single nozzle is 2-3 L / min.

[0023] For copper matte ladles weighing less than 5 tons, a 10-minute cooling cycle followed by an 8-minute interval is used; for ladles weighing more than 5 tons, a 15-minute cooling cycle followed by a 10-minute interval is used. The device is equipped with infrared safety sensors around its perimeter. These sensors use through-beam photoelectric sensors with a detection range of 0-5 meters and a response time of <0.1 seconds. The water cooling operation automatically stops when personnel are detected entering the restricted area.

[0024] This device accelerates the cooling of hot copper matte by using high-pressure atomized water cooling. After adopting this device, the cooling time of copper matte is shortened from the original 4 hours to 1.5 hours, and the number of times the matte is flipped and impacted is reduced from an average of 15 times to 3 times. Experiments show that the intermittent cooling method can make the matte shell easier to separate and save water resources.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for accelerating the cooling of hot copper matte, characterized in that: It includes a DCS control unit (1), a copper-clad compartment (2), a high-pressure atomizing water cooling device (3), a track flatbed trolley (4), and an electric roller shutter door (5); The DCS control unit (1) is electrically connected to the electric roller shutter door (5), the track flat trolley (4) and the high-pressure atomizing water cooling device (3) and controls their operation; The copper-plated compartment (2) is equipped with an independent flue and an electric roller shutter door (5) to form a closed space; The high-pressure atomizing water cooling device (3) adopts a spray structure with concentric double rings, with 50 nozzles (7) evenly distributed in the inner and outer rings, the distance between the inner and outer rings is 200mm, and the corresponding outer ring diameter is 1200mm. The track flatbed trolley (4) runs on fixed steel rails laid inside the copper-clad box (2), with no enclosure around the bearing surface; The device is equipped with infrared sensing safety devices around its perimeter and is connected to the DCS control unit (1).

2. The hot copper matte accelerated cooling device according to claim 1, characterized in that: The working water pressure of the high-pressure atomizing water cooling device (3) is 3-5 MPa, the spray angle is 30-45 degrees, the spray angle of the nozzle (7) is 40±2°, and the flow rate of a single nozzle is 2-3 L / min.

3. The hot copper matte accelerated cooling device according to claim 1, characterized in that: The DCS control unit (1) controls the cooling time according to the weight of the copper matte liner and adopts an intermittent cooling mode. For copper matte liners under 5 tons, a 10-minute cooling + 8-minute interval cycle is used, and for copper matte liners over 5 tons, a 15-minute cooling + 10-minute interval cycle is used.

4. The hot copper matte accelerated cooling device according to claim 1, characterized in that: The flue gas duct of the copper-plated compartment (2) is connected to the main flue gas treatment system of the factory.

5. The hot copper matte accelerated cooling device according to claim 1, characterized in that: The infrared sensing safety device uses a through-beam photoelectric sensor with a detection distance of 0-5m and a response time of <0.1s.

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