A rapid cooling matte particulation device

Abstract

The application discloses a quick-cooling copper matte granulation device, which comprises a granulation chamber, a copper matte channel inlet is communicated with the upper end of the granulation chamber, a centrifugal rotating disc is installed in the granulation chamber and located below the copper matte channel inlet, the continuous rotation of the centrifugal rotating disc realizes the continuous granulation of molten copper matte, a feeding end is further installed at the upper end of the granulation chamber, the feeding end comprises two installation plates which are arranged at intervals, a feeding channel is formed between the two installation plates, the feeding channel is annular near the centrifugal rotating disc, and a dry copper matte granule feeding device is communicated with the upper end of the feeding channel. The application simplifies the production process, greatly improves the cooling efficiency of copper matte, and guarantees the safe production of copper matte.

Description

Technical Field

[0001] This invention relates to the field of metal production technology, and in particular to a rapidly cooled copper matte microparticle forming device. Background Technology

[0002] Copper matte, also known as copper matte, is produced in smelting furnaces and undergoes processes such as water quenching and granulation, as well as matte grinding, before entering the blowing furnace. Currently, the mainstream method for matte granulation is the INBA slag treatment process developed by PW in Luxembourg. After the matte is discharged from the copper outlet, it is introduced into the granulation tower through a copper discharge chute. In the granulation tower, pressurized water jets from the granulation water tank perform water quenching to obtain sandy matte. Then, a slurry pump pumps the water and sand mixture into a dewatering drum, where water and sand are separated.

[0003] The current copper matte water quenching granulation process is complex and requires sophisticated equipment. It also has certain limitations in its technological development. In particular, copper matte water quenching is prone to backfiring, which poses a significant threat to production safety. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a rapid cooling copper matte microparticle device, which simplifies the production process, greatly improves the efficiency of copper matte cooling, and also ensures the safe production of copper matte.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rapid cooling copper matte microparticle granulation device includes a granulation chamber with a copper matte chute inlet at its upper end. A centrifugal disc is installed inside the granulation chamber below the copper matte chute inlet. The centrifugal disc rotates continuously to achieve continuous granulation of molten copper matte. A feeding end is also installed at the upper end of the granulation chamber. The feeding end includes two spaced-apart mounting plates forming a feeding channel between them. The feeding channel is annular on the side near the centrifugal disc. A dry ice copper particle feeding device is connected to the upper end of the feeding channel. Dry ice copper particles are continuously fed onto the outside of the centrifugal disc to form a cold material curtain. After molten copper matte is granulated, it mixes with the dry ice copper particles in the cold material curtain to achieve enhanced cooling.

[0007] The above design utilizes cooled dry ice copper particles to form a cold material curtain on the outside of the centrifugal disc. After the molten copper matte solidifies, it forms ice particles that mix with the dry ice copper particles, achieving efficient heat exchange and rapidly reducing the temperature to a safe level. The mixture is then cooled by water cooling, effectively avoiding the phenomenon of high-temperature water cooling explosion. This design simplifies the production process, greatly improves the efficiency of copper matte cooling, and ensures the safe production of copper matte.

[0008] Preferably, the dry ice copper dispensing device includes a top dry material conveying chamber, which is connected to the dispensing channel via a dry material conveying pipeline.

[0009] Dry ice copper in the top dry material conveying chamber is conveyed quantitatively and at a fixed rate to the delivery channel through the dry material conveying pipeline, and finally discharged from the end of the delivery channel, forming a ring-shaped cold material curtain.

[0010] Preferably, the inner wall of the delivery channel is fixed with a plurality of material buffer cones, the horizontal cross section of the material buffer cones is V-shaped, and the top of the material buffer cones faces upward.

[0011] The above structure can buffer and slow down the dry ice copper particles, reduce the initial velocity of the dry ice copper particles, and reduce damage to the bottom structure of the granulation chamber.

[0012] Preferably, the inlet of the copper matte chute extends through the feeding channel into the granulation chamber, and the horizontal cross-section of the copper matte chute inlet is triangular or rhomboid.

[0013] The aforementioned arrangement of the dry ice copper chute inlet can also buffer and slow down the dry ice copper particles, preventing them from clogging the delivery channel.

[0014] Preferably, a copper matte discharge port is installed at the bottom of the granulation chamber, and a copper matte storage tank is provided below the copper matte discharge port. The copper matte storage tank can store the cooled dry ice copper granules, ensuring the normal operation of the entire equipment.

[0015] Preferably, a hopper elevator is also installed on the outside of the dry ice copper bin, and a hopper is provided on the outer side of the upper end of the hopper elevator. This structure enables the directional lifting of the dry ice copper granules, specifically, lifting them into the top dry material conveying bin, thus achieving continuous operation of the dry ice copper.

[0016] Preferably, a cooling fan is installed at the bottom of the granulation chamber. The cooling fan continuously blows cooling gas upwards, further accelerating the cooling of the copper matte within the granulation chamber.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows:

[0018] The above design utilizes cooled dry ice copper particles to form a cold material curtain on the outside of the centrifugal disc. After the molten copper matte solidifies, it forms ice particles that mix with the dry ice copper particles, achieving efficient heat exchange and rapidly reducing the temperature to a safe level. The mixture is then cooled by water cooling, effectively avoiding the phenomenon of high-temperature water cooling explosion. This design simplifies the production process, greatly improves the efficiency of copper matte cooling, and ensures the safe production of copper matte. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 For the present invention Figure 1 A magnified structural diagram at point A.

[0021] Figure 3 This is a schematic diagram of the dispensing end and the inlet structure of the copper matte chute of the present invention.

[0022] In the diagram: 1. Copper matte chute inlet; 2. Feeding end; 201. Mounting plate; 202. Feeding channel; 203. Material buffer cone; 204. Dry copper granules; 3. Granulation chamber; 4. Centrifugal turntable; 5. Cooling fan; 6. Copper matte silo; 7. Hopper elevator; 8. Hopper; 9. Top dry material conveying silo; 10. Dry material conveying pipeline. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Copper matte, also known as copper matte, is produced in smelting furnaces and undergoes processes such as water quenching and granulation, as well as matte grinding, before entering the blowing furnace. Currently, the mainstream method for matte granulation is the INBA slag treatment process developed by PW in Luxembourg. After being discharged from the copper outlet, the matte is introduced into a granulation tower via a chute. Inside the granulation tower, pressurized water from a granulation water tank quenches the matte to produce sandy matte. A slurry pump then pumps the water and sand mixture into a dehydration drum, where water and sand are separated. Steam generated during water quenching is released into the atmosphere through a chimney. The separated water is pumped to a cooling tower for cooling and then recirculated through the granulation pump. The sandy matte is continuously transported by conveyor belt to a dehydration chamber for further dehydration to achieve a moisture content of 5%–8%.

[0026] Existing copper matte micronization equipment involves numerous devices and processes. The processes include water supply and purification, drying and grinding; the equipment includes copper matte scooping machines, copper matte mills, rotary drum dehydration systems, and copper matte storage tanks. Wet copper matte also requires drying considerations. In actual production, high-temperature copper matte may burst upon contact with water. Furthermore, the normal discharge temperature of copper matte can reach 1250℃, and the water quenching process directly wastes this heat. Given the call for energy conservation and efficiency improvements from enterprises, the future development of water quenching for molten copper matte is limited. Therefore, exploring a novel dry micronization process can significantly shorten the copper matte micronization process, reduce production costs, and improve production efficiency.

[0027] The current copper matte water quenching granulation process is complex and requires sophisticated equipment. It also has certain limitations in its technological development. In particular, copper matte water quenching is prone to backfiring, which poses a significant threat to production safety.

[0028] See attached document Figure 1 - Appendix Figure 3 To address the issues of long and complex processes in the water-quenched granulation of copper matte, a short-process, rapidly cooling dry granulation device was designed. Its principle is as follows: Unlike conventional water-quenched granulation processes that involve high-pressure water flow to disperse the molten copper and subsequent cooling in a granulation pool, the new process divides the granulation of molten copper matte into three stages: molten copper matte is poured onto a rotating disc, which, through high-speed rotation, "throws" the matte out, using centrifugal force to transform the molten copper matte from a viscous state into droplets in the air; a ring of dry copper matte descent inlets is designed on the outside of the matte chute inlet, continuously supplying cold material to the granulation chamber through a top dry material conveying bin, forming a cylindrical "cold material curtain" between the inner wall of the granulation chamber and the rotating disc. The presence of the cooling system causes the dispersed molten matte droplets, after initial cooling in the air under centrifugal force, to "slam" onto the "material curtain." Through direct heat conduction with the cold material curtain, they are rapidly cooled into matte particles. Simultaneously, the presence of the cold material curtain protects the chamber walls from direct impact, preventing the high-temperature molten matte from adhering to and eroding the walls. Below the turntable, the cooled matte particles enter the bottom matte air-cooling zone. A cooling fan continuously supplies air from the bottom of the matte for further cooling. The heat released during cooling is discharged through a smoke collection pipe at the top of the granulation chamber, and the hot flue gas can be recycled into a subsequent heat exchange system. A cold matte discharge port is located at the bottom of the granulation chamber. The discharged matte is collected in a matte hopper, and a portion of the dry matte is transported to the top dry material conveying hopper for recycling.

[0029] 1. A short-process dry granulation process for copper matte involves a cooling process of mechanical centrifugal granulation - heat conduction cooling of cold material curtain - further air cooling of copper matte at the bottom.

[0030] 2. The rotating disc in the granulation chamber can quickly change the high-temperature molten copper matte from a molten and viscous state into droplets through centrifugal force.

[0031] 3. A ring of dry tar matte inlets is located at the top of the granulation chamber. Specifically, the dry material is supplied by a top-mounted dry material conveying hopper, with two corresponding feed pipes to ensure uniform feeding. To ensure a stable dry material curtain forms within the granulation chamber, the dry material conveying channel is designed with a jacket structure. Specifically, to ensure uniform material flow through the jacket into the granulation chamber, an inverted V-shaped material dispersion cone is installed within the jacket channel. This dispersion cone effectively slows and disperses the dry material as it enters the granulation chamber, resulting in a more uniform material curtain. The angle of this inverted V-shaped material dispersion cone is 60°, matching the angle of the tar matte conveying chute, fully utilizing the structure of the tar matte chute within the jacket channel and preventing blockage of the dry material inside the jacket.

[0032] 4. The bottom of the granulation chamber is designed with a cooling zone. After the special copper matte particles enter the cooling zone at the bottom, the cooling fan at the bottom continuously supplies air to further cool the copper matte particles. At the same time, the rising airflow generated by the bottom fan carries the high-temperature flue gas after copper matte granulation into the flue gas exhaust pipe at the top for centralized and unified discharge.

[0033] 5. The top of the granulation chamber is also equipped with a cooled copper matte discharge port. The copper matte particles are directly discharged through the discharge port to the bottom copper matte silo for storage. The special copper matte silo is also designed with a uniform material lifting bucket, which transports the dry material to the dry material conveying silo at the top of the granulation chamber.

[0034] 1. The short-process granulation process for copper matte consists of centrifugal granulation, material curtain enhanced cooling, and bottom air cooling.

[0035] 2. To ensure uniform material curtain formation, the dry material conveying channel is designed as a jacketed type, with an inverted V-shaped material dispersion cone inside the jacket.

[0036] 3. To recover heat from the granulation process, a cooling fan is designed at the bottom of the granulation chamber. The cooling fan generates an upward airflow, which carries the high-temperature flue gas through the exhaust port at the top of the granulation chamber for unified discharge and subsequent heat exchange utilization.

[0037] 4. To ensure continuous conveying of dry materials at the top, a hopper elevator with uniform speed is installed.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rapidly cooled copper matte microparticle granulation device, comprising a granulation chamber (3), wherein the upper end of the granulation chamber (3) is connected to a copper matte chute inlet (1), characterized in that: The granulation chamber (3) is equipped with a centrifugal disc (4) located below the inlet (1) of the matte chute. The centrifugal disc (4) rotates continuously to achieve continuous granulation of molten matte. The granulation chamber (3) is also equipped with a feeding end (2). The feeding end (2) includes two spaced mounting plates (201). A feeding channel (202) is formed between the two mounting plates (201). The feeding channel (202) is annular on the side near the centrifugal disc (4). The upper end of the feeding channel (202) is connected to a dry ice copper particle (204) feeding device. The dry ice copper particles (204) are continuously fed onto the outside of the centrifugal disc (4) to form a cold material curtain. After the molten matte is granulated, it mixes with the dry ice copper particles (204) in the cold material curtain to achieve enhanced cooling. The inner wall of the delivery channel (202) is fixed with a plurality of material buffer cones (203), the horizontal cross section of the material buffer cones (203) is V-shaped, and the top of the material buffer cones (203) faces upward; The inlet (1) of the copper matte chute extends through the feeding channel (202) into the granulation chamber (3), and the horizontal cross section of the copper matte chute inlet (1) is triangular or rhomboid; The bottom of the granulation chamber (3) is equipped with a copper matte discharge port, and a copper matte hopper (6) is provided below the copper matte discharge port.

2. The rapidly cooling copper matte microparticle atomization device according to claim 1, characterized in that, It also includes a dry ice copper dispensing device, which includes a top dry material conveying bin (9), and the top dry material conveying bin (9) is connected to the dispensing channel (202) through a dry material conveying pipe (10).

3. The rapidly cooling copper matte microparticle atomization device according to claim 2, characterized in that, A hopper elevator (7) is also installed on the outside of the copper silo (6), and a hopper (8) is provided on the outside of the upper end of the hopper elevator (7).

4. The rapidly cooling copper matte microparticle atomization device according to claim 1, characterized in that, A cooling fan (5) is installed at the bottom of the granulation chamber (3).

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