Matte granulation waste heat recovery system

Abstract

The utility model discloses a matte granulation waste heat recovery system which comprises a granulation device, a conveying device is installed at the bottom of the granulation device, a matte chute inlet is formed in the side wall of the top of the granulation device, and a centrifugal granulation assembly located below the matte chute inlet is arranged in the granulation device. A cooling air supply pipe facing the centrifugal granulation assembly is installed at the bottom of the granulation device, and a water cooling wall located on the outer side of the centrifugal granulation assembly is installed on the inner wall of the granulation device. According to the utility model, high-temperature flue gas generated by copper matte granulation can be recycled at different positions, so that the flue gas recycling benefit is improved, the solidification of copper matte is accelerated, and the production efficiency of copper matte is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal granulation, in particular to a matte granulation waste heat recovery system. Background Art

[0002] The current mainstream matte granulation treatment method is that the matte is discharged from the copper outlet and introduced into the granulation tower through the copper discharge chute. In the granulation tower, the pressurized water flow sprayed from the granulation water tank is used for water quenching to obtain sand-like matte; the water and sand mixture is then pumped into the dehydration drum by a slurry pump, and the water and sand are separated in the dehydration drum; the steam generated during the water quenching process is discharged into the atmosphere through the chimney; the separated water is sent to the cooling tower by a circulation pump for cooling treatment, and then participates in the system circulation through the granulation pump; the sand-like matte is continuously transported to the dehydration bin by a transfer belt for further dehydration to meet the requirement of 5% to 8% water content.

[0003] The existing copper matte micronization uses a water quenching method to cool the copper matte, but the high-temperature waste heat resource recovery effect of the copper matte is poor. Usually, the waste heat is only recovered from the high-temperature flue gas on the outside, and the waste heat recovery effect is poor, which affects the comprehensive utilization efficiency of the entire system. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a matte granulation waste heat recovery system, which can recycle the high-temperature flue gas generated by matte granulation at different positions, thereby improving the efficiency of flue gas recovery and utilization, accelerating the solidification of matte, and improving the efficiency of matte production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A matte granulation waste heat recovery system comprises a granulating device, wherein a conveying device is installed at the bottom of the granulating device, a matte chute inlet is provided on the top side wall of the granulating device, and a centrifugal granulating assembly located below the matte chute inlet is arranged inside; a cooling air supply duct arranged toward the centrifugal granulating assembly is installed at the bottom of the granulating device, a water-cooled wall located on the outside of the centrifugal granulating assembly is installed on the inner wall of the granulating device, an air outlet pipe is connected to the top of the granulating device, and a flue gas heat exchange device is connected to the outside of the air outlet pipe.

[0007] Preferably, a liquid inlet pipe is installed on the first side of the bottom of the granulating device, a liquid outlet pipe is installed on the second side of the bottom, a material discharge assembly is installed on the lower surface, and the conveying device is located below the material discharge assembly.

[0008] Preferably, the conveying device is a chain grate, and a closed shell is installed on the outer side of the chain grate. The first end of the closed shell is connected to the flue gas heat exchange device, and the second end is connected to the cooling air supply pipe.

[0009] Preferably, a flue gas purification device is connected in series between the first end of the closed shell and the flue gas heat exchange device.

[0010] Preferably, a serpentine flow guide pipe is connected to the surface of the closed shell.

[0011] Preferably, a cooling fan is provided inside the guide duct.

[0012] Preferably, the centrifugal granulation assembly includes a centrifugal granulation turntable and a driving device for controlling the rotation of the centrifugal granulation turntable.

[0013] Preferably, the cooling air supply duct and the water-cooled wall are both annular.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] By arranging a combination of a water-cooled wall and a flue gas heat exchange device, the high-temperature flue gas generated by the granulation of matte can be recycled at different locations, thereby improving the efficiency of flue gas recycling; the combination of a water-cooled wall and a cooling air supply duct can reduce the temperature in the granulation device, accelerate the solidification of matte, and improve the efficiency of matte production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the granulation device of the utility model.

[0018] Figure 3 It is a schematic diagram of the connection state of the closed shell, the conveying device and the flue gas heat exchange device of the utility model.

[0019] In the figure: 100, granulation device; 110, matte chute inlet; 120, air outlet pipe; 130, liquid inlet pipe; 140, liquid outlet pipe; 150, unloading assembly; 200, water-cooled wall; 300, centrifugal granulation assembly; 310, centrifugal granulation turntable; 320, driving device; 400, cooling air supply duct; 500, cooling fan; 600, flue gas heat exchange device; 700, flue gas purification device; 800, conveying device; 900, closed shell; 910, diversion pipe. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0022] The current mainstream matte granulation treatment method is that the matte is discharged from the copper outlet and introduced into the granulation tower through the copper discharge chute. In the granulation tower, the pressurized water flow sprayed from the granulation water tank is used for water quenching to obtain sand-like matte; the water and sand mixture is then pumped into the dehydration drum by a slurry pump, and the water and sand are separated in the dehydration drum; the steam generated during the water quenching process is discharged into the atmosphere through the chimney; the separated water is sent to the cooling tower by a circulation pump for cooling treatment, and then participates in the system circulation through the granulation pump; the sand-like matte is continuously transported to the dehydration bin by a transfer belt for further dehydration to meet the requirement of 5% to 8% water content.

[0023] The existing copper matte micronization uses a water quenching method to cool the copper matte, but the high-temperature waste heat resource recovery effect of the copper matte is poor. Usually, the waste heat is only recovered from the high-temperature flue gas on the outside, and the waste heat recovery effect is poor, which affects the comprehensive utilization efficiency of the entire system.

[0024] In order to solve the above problems, refer to the attached Figure 1 -Attached Figure 3 A matte granulation waste heat recovery system includes a granulation device 100, a conveying device 800 is installed at the bottom of the granulation device 100, a matte chute inlet 110 is provided on the top side wall of the granulation device 100, and a centrifugal granulation component 300 is provided below the matte chute inlet 110. The centrifugal granulation component 300 can rotate in a directional manner to achieve centrifugal granulation of molten matte; specifically, the centrifugal granulation component 300 includes a centrifugal granulation turntable 310 and a driving device 320 for controlling the rotation of the centrifugal granulation turntable 310. The molten matte can fall from the matte chute inlet 110 to the surface of the centrifugal granulation turntable 310. During the continuous rotation of the centrifugal granulation turntable 310, the matte can be centrifugally granulated. After being thrown out, the matte is solidified into a granular state, thereby realizing the production and manufacturing of matte granulation.

[0025] A cooling air supply pipe 400 is installed at the bottom of the granulation device 100 and is arranged toward the centrifugal granulation component 300. A water-cooled wall 200 located outside the centrifugal granulation component 300 is installed on the inner wall of the granulation device 100. The cooling air supply pipe 400 can continuously pump cooling gas toward the centrifugal granulation component 300 to form an annular cooling curtain wall, which further cools the centrifuged matte and ensures that it does not directly hit the chamber wall. The surrounding heat can be efficiently absorbed through the water-cooled wall 200, and the airflow blown out by the cooling air supply pipe 400 can drive the continuous flow of the surrounding airflow, so that the water-cooled wall 200 can maintain The granulating device 100 is continuously kept in the rated high-temperature atmosphere to realize efficient waste heat recovery; at the same time, the water-cooled wall 200 and the cooling air supply duct 400 cooperate to reduce the temperature in the granulating device 100, so that the molten copper matte can be quickly solidified, thereby improving the efficiency of the copper matte granulation manufacturing; and the top of the granulating device 100 is connected to an air outlet pipe 120, and the outside of the air outlet pipe 120 is connected to a flue gas heat exchange device 600, and the high-temperature flue gas containing heat is discharged from the top air outlet pipe 120, and the flue gas can be further recovered for waste heat after passing through the flue gas heat exchange device 600, thereby greatly improving the efficiency of waste heat recovery.

[0026] In summary, by arranging a combination of a water-cooled wall 200 and a flue gas heat exchange device 600, the high-temperature flue gas generated by the granulation of matte can be recycled and utilized at different locations, thereby improving the efficiency of flue gas recycling; the combination of the water-cooled wall 200 and the cooling air supply duct 400 can reduce the temperature in the granulation device 100, accelerate the solidification of matte, and improve the efficiency of matte production.

[0027] The cooling air supply duct 400 and the water-cooled wall 200 are preferably both annular. The cooling air supply duct 400 can blow out annular cooling air to achieve efficient circumferential cooling. At the same time, the water-cooled wall 200 can recover waste heat in the outer annular area, greatly improving the efficiency of waste heat recovery.

[0028] A liquid inlet pipe 130 is installed on the first side of the bottom of the granulating device 100, a liquid outlet pipe 140 is installed on the second side of the bottom, a material discharge assembly 150 is installed on the lower surface, and the conveying device 800 is located below the material discharge assembly 150. By setting the liquid outlet pipe 140 and the liquid inlet pipe 130, the directional flow of the cooling liquid can be controlled, and the matte particles at the bottom of the granulating device 100 can be efficiently water-cooled to shorten the cooling time of the matte particles. At the same time, this part of the cooling water can also recover waste heat to avoid heat waste.

[0029] It is preferred to configure the conveying device 800 as a chain grate, with a closed shell 900 installed on the outside of the chain grate. The first end of the closed shell 900 is connected to the flue gas heat exchange device 600, and the second end is connected to the cooling air supply duct 400. Through the above combination, the matte particles can be efficiently conveyed by the chain grate. At the same time, the exhaust gas discharged from the flue gas heat exchange device 600 can be efficiently utilized through the combination of the closed shell 900 and the chain grate, so that the matte particles on the surface of the chain grate can be cooled and dried, thereby achieving efficient utilization of the exhaust gas discharged from the flue gas heat exchange device 600; at the same time, the exhaust gas after the matte particles are cooled and dried can re-enter the cooling air supply duct 400 to cool the matte in a high-temperature state in the granulation device 100, thereby forming an overall airflow circulation, thereby achieving efficient utilization of the exhaust gas generated in the matte production process.

[0030] A flue gas purification device 700 is connected in series between the first end of the closed shell 900 and the flue gas heat exchange device 600. The flue gas purification device 700 can be selected as an existing purification structure to purify the flue gas containing impurities to avoid affecting the matte particles on the surface of the conveying device 800 and subsequent equipment.

[0031] A serpentine guide pipe 910 is connected to the surface of the closed shell 900. The guide pipe 910 has a bending design, which can guide the exhaust gas purified by the flue gas purification device 700, so that the exhaust gas can pass through the conveying device 800 along a predetermined trajectory, thereby achieving efficient drying and cooling of the matte particles on the surface of the conveying device 800.

[0032] A cooling fan 500 is provided inside the guide duct 910 , and the smoke can be guided by the cooling fan 500 , which is suitable for a longer-sized conveying device 800 and a closed shell 900 .

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A matte granulation waste heat recovery system, comprising a granulation device (100), wherein a conveying device (800) is installed at the bottom of the granulation device (100), characterized in that: The top side wall of the granulating device (100) is provided with a matte chute inlet (110), and a centrifugal granulating component (300) is provided inside and is located below the matte chute inlet (110); a cooling air supply duct (400) is installed at the bottom of the granulating device (100) and is arranged toward the centrifugal granulating component (300); a water-cooled wall (200) is installed on the inner wall of the granulating device (100) and is located outside the centrifugal granulating component (300); the top of the granulating device (100) is connected to an air outlet duct (120), and the outside of the air outlet duct (120) is connected to a flue gas heat exchange device (600).

2. A matte granulation waste heat recovery system according to claim 1, characterized in that: The granulating device (100) has a liquid inlet pipe (130) installed on a first side of the bottom, a liquid outlet pipe (140) installed on a second side of the bottom, a material discharge assembly (150) installed on the lower surface, and the conveying device (800) is located below the material discharge assembly (150).

3. A matte granulation waste heat recovery system according to claim 2, characterized in that: The conveying device (800) is a chain grate, and a closed shell (900) is installed outside the chain grate. The first end of the closed shell (900) is connected to the flue gas heat exchange device (600), and the second end is connected to the cooling air supply pipe (400).

4. A matte granulation waste heat recovery system according to claim 3, characterized in that: A flue gas purification device (700) is connected in series between the first end of the closed shell (900) and the flue gas heat exchange device (600).

5. The matte granulation waste heat recovery system according to claim 3, characterized in that: The surface of the closed shell (900) is connected to a serpentine flow guide pipe (910).

6. A matte granulation waste heat recovery system according to claim 5, characterized in that: A cooling fan (500) is arranged inside the flow guide duct (910).

7. The matte granulation waste heat recovery system according to claim 1, characterized in that: The centrifugal granulation assembly (300) comprises a centrifugal granulation turntable (310) and a driving device (320) for controlling the rotation of the centrifugal granulation turntable (310).

8. The matte granulation waste heat recovery system according to claim 1, characterized in that: The cooling air supply pipe (400) and the water-cooled wall (200) are both annular.

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