Device for preventing copper matte from exploding in water quenching granulation process

Abstract

The utility model discloses a device for preventing explosion in a matte water quenching granulation process, which is characterized in that an outlet of an equipartition chute is positioned in a granulation tower, and an inlet of the equipartition chute is connected with a discharge chute; the cooling mechanism comprises a spray head arranged in the granulation tower, the spray head is located below an outlet of the equipartition chute, the spray head is communicated with an external high-pressure water source, and the spraying end of the spray head can be aligned with the molten matte flowing out of the outlet of the equipartition chute; the granulating mechanism comprises a granulating spraying head arranged in the granulating tower, the granulating spraying head is located below the spraying head, the granulating spraying head is communicated with an external granulating water source, and the spraying end of the granulating spraying head can be aligned with the molten matte which is in contact with the cooling water sprayed by the spraying head. The spray head is designed in the granulation tower, high-temperature molten matte discharged from the equipartition chute can be cooled by cooling water sprayed out of the spray head in advance, and the cooled molten matte flow is then scattered by granulation water sprayed out of the granulation spray head, so that the granulation of the matte is realized, the explosion phenomenon cannot occur in the water quenching granulation process of the matte, and the water quenching granulation efficiency of the matte is improved. Meanwhile, extremely fine matte particles generated by explosion can be effectively prevented, and the problem that slag and water are difficult to separate in the later period is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to non ferrous metal smelting technical field more specifically, it is a device for preventing explosion in the process of matte water quenching granulation. BACKGROUND

[0002] With the development and application of double top blowing copper process (top blowing smelting + top blowing), it is necessary to quench and granulate the high-temperature molten matte produced by top blowing smelting, and the high-temperature molten matte is changed into solid granular matte for top blowing.

[0003] The current matte water quenching granulation method is to directly quench the high-temperature molten matte with the pressurized water flow sprayed by a single-chamber granulation nozzle, and explosion may occur in the process of water quenching granulation, which brings the following adverse effects: first, it may cause serious production safety hazards; second, it may cause noise pollution; third, the explosion may produce a large amount of fine granular matte, which is not conducive to subsequent slag-water separation, reduces the primary recovery rate, and increases the difficulty of secondary recovery; fourth, the impact airflow generated by the explosion may pollute the environment as harmful gases cannot be effectively collected and treated.

[0004] Therefore, how to provide a device for preventing explosion in the process of matte water quenching granulation, so that it can overcome the above problems, is a problem that technicians in the field need to solve urgently. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a device for preventing explosion in the process of matte water quenching granulation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A device for preventing explosion in the process of matte water quenching granulation, comprising:

[0008] The equal distribution chute has an outlet in the granulation tower, and the inlet of the equal distribution chute is connected with the discharge chute;

[0009] The cooling mechanism comprises a nozzle arranged in the granulation tower, the nozzle is located below the outlet of the equal distribution chute, the nozzle is connected with an external high-pressure water source, and the spraying end of the nozzle can be aligned with the molten matte flowing out of the outlet of the equal distribution chute;

[0010] The granulation mechanism comprises a granulation spraying head arranged in the granulation tower, the granulation spraying head is located below the nozzle, the granulation spraying head is connected with an external granulation water source, and the spraying end of the granulation spraying head can be aligned with the molten matte that has been in contact with the cooling water sprayed by the nozzle.

[0011] Compared with the prior art, the device for preventing explosion in the process of water quenching granulation of copper matte is provided, the molten copper matte discharged from the equal distribution channel can be cooled by the cooling water sprayed by the spray head, the molten copper matte after the cooling is scattered by the granulation water sprayed by the granulation spray head, thereby realizing the granulation of the copper matte, and the explosion phenomenon does not occur in the process of water quenching granulation of the copper matte, and the extremely fine copper matte particles generated due to the explosion can be effectively prevented, and the difficulty of separation of slag and water in the later stage is avoided.

[0012] Preferably, the equal distribution channel is composed of a straight channel section and an inclined channel section which are communicated with each other, one end of the straight channel section away from the inclined channel section is fixedly connected with and communicated with the outlet of the discharge channel, the inclined channel section is located in the granulation tower, the intersection line between the bottom wall of the inclined channel section and the lower end wall of the inclined channel section is horizontally arranged, the lower end wall of the inclined channel section is arranged at an acute angle with the outer bottom wall of the inclined channel section, and the spray head is arranged below the inclined channel section.

[0013] Preferably, the cooling mechanism further comprises an annular pipe, a center line in the pipe length direction of the annular pipe defines a horizontal plane, a plurality of spray heads are fixedly connected with and communicated with the annular pipe, the plurality of spray heads are uniformly arranged along the circumferential direction of the annular pipe, the spraying directions of the plurality of spray heads all point to the pipe center of the annular pipe, the annular pipe is connected with an external high-pressure water source, and the molten copper matte flowing out of the inclined channel section can pass through the inside of the annular pipe. The above design can ensure that the molten copper matte passing through the annular pipe can be reliably cooled.

[0014] Preferably, two annular pipes are vertically arranged in sequence, the vertical positions of the two annular pipes are opposite, a plurality of spray heads are fixedly connected with and communicated with each annular pipe, the spray heads on the two annular pipes are vertically staggered, and the two annular pipes are both connected with an external high-pressure water source. The molten copper matte discharged from the equal distribution channel can be rapidly cooled.

[0015] Preferably, the cooling mechanism further comprises an adjusting valve one, and one adjusting valve one is connected in liquid circuit between each annular pipe and the external high-pressure water source. The spraying pressure of the spray head can be adjusted through the adjusting valve one.

[0016] Preferably, the spraying pressure of the spray head is 0.6MPa-1.0MPa. In the spraying pressure range, the cooling water sprayed by the spray head will not scatter the molten copper matte flow.

[0017] Preferably, a plurality of granulation spray heads are arranged, the plurality of granulation spray heads are vertically arranged in sequence, the inner diameters of the spray nozzles of the plurality of granulation spray heads are sequentially increased along the vertical direction, and the plurality of granulation spray heads are all connected with an external granulation water source. The above design can ensure that the molten copper matte flow can be effectively granulated.

[0018] Preferably, the granulation mechanism further comprises a second regulating valve, and each of the granulation spray heads is connected with the external granulation water source through the second regulating valve.

[0019] Preferably, the granulation mechanism further comprises a second regulating valve, and each of the granulation spray heads is connected with the external granulation water source through the second regulating valve. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only a part of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0021] Fig. 1 FIG. 1 is a schematic diagram of a device for preventing explosion in the process of water quenching and granulation of copper;

[0022] Fig. 2 FIG. 1 is a schematic diagram of a device for preventing explosion in the process of water quenching and granulation of copper;

[0023] In the drawings:

[0024] 1 is a straight slot section, 2 is an inclined slot section, 3 is a granulation tower, 4 is a spray head, 5 is an annular pipe, 6 is a first regulating valve, 7 is a granulation spray head, and 8 is a second regulating valve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] This utility model discloses a device to prevent explosions during the water quenching and granulation of copper matte. The device is designed with nozzles 4 inside the granulation tower 3. The high-temperature molten copper matte discharged from the equalization chute is pre-cooled by the cooling water sprayed from the nozzles 4. The cooled molten copper matte stream is then dispersed by the granulating water sprayed from the granulation nozzles 7, thus achieving granulation of the copper matte. No explosions occur during the water quenching and granulation process, and the device effectively prevents the formation of extremely fine copper matte particles due to explosions, avoiding difficulties in slag-water separation later. The copper matte particles produced using the above design have a particle size of 3mm-6mm accounting for more than 90%, and the slag-water separation recovery rate is higher than 98.0%.

[0027] The temperature of molten copper matte directly affects the intensity of the explosion; the higher the temperature, the more violent the explosion. During water quenching, when the temperature of the copper matte is below 1180℃, the explosion reaction is significantly smaller. However, the smelting process requires the temperature of the copper matte to be controlled between 1220℃ and 1270℃. The design of nozzle 4 can quickly reduce the temperature of the molten copper matte flow, lowering the temperature of the molten copper matte to below 1180℃ before it comes into contact with granulating water. At the same time, the extremely fine atomized water particles sprayed from nozzle 4 are dispersed in the granulation tower 3, effectively reducing the temperature inside the granulation tower 3 and further suppressing the occurrence of the explosion reaction.

[0028] The nozzle 4 is fixed on the annular tube 5, and multiple nozzles 4 are fixed on each of the two annular tubes 5. This design can quickly and effectively cool the molten copper matte flow.

[0029] The spray pressure of nozzle 4 can be adjusted by regulating valve 6;

[0030] There are two granulation nozzles 7. The granulation water sprayed from the two granulation nozzles 7 can reliably disperse the molten copper matte flow, thereby improving the granulation effect and preventing the molten copper matte from exploding during the granulation process.

[0031] The injection pressure of the granulation nozzle 7 can be adjusted by regulating valve 8;

[0032] Through the design of the above-mentioned nozzle 4 and multiple granulation nozzles 7, the device can effectively solve the problem of explosion during the granulation process of copper matte water quenching, ensuring the continuous and safe production of copper matte water quenching. At the same time, the device has a simple structure and low investment cost.

[0033] Example

[0034] See appendix Figs. 1-2 This is a schematic diagram of the overall and partial structure of one embodiment of the present invention. Specifically, the present invention discloses a device for preventing explosions during the water quenching and granulation process of copper matte, comprising:

[0035] The outlet of the equalizing chute is located in the granulation tower 3, the equalizing chute is a pure copper water-cooled structure, and the inlet of the equalizing chute is connected with the discharge chute; the high-temperature molten copper is introduced into the equalizing chute from the discharge chute, and the molten copper is horizontally divided and then flows downward from the outlet of the equalizing chute;

[0036] The cooling mechanism comprises a spray head 4 arranged in the granulation tower 3, the spray head 4 is located below the outlet of the equalizing chute, the spray head 4 is connected with an external high-pressure water source, and the spray end of the spray head 4 can be aligned with the molten copper flowing out of the outlet of the equalizing chute; the cooling water sprayed by the spray head 4 can contact the molten copper flowing out of the outlet of the equalizing chute, so that the molten copper is cooled;

[0037] The granulation mechanism comprises a granulation spray head 7 arranged in the granulation tower 3, the granulation spray head 7 is located below the spray head 4, the granulation spray head 7 is connected with an external granulation water source, and the spray end of the granulation spray head 7 can be aligned with the molten copper that has contacted the cooling water sprayed by the spray head 4; the granulation water sprayed by the granulation spray head 7 can contact the molten copper cooled by the cooling mechanism, so that the molten copper is granulated, and the copper particles formed after the molten copper is granulated fall to the bottom of the granulation tower 3, the bottom of the granulation tower 3 is provided with a cooling water pool, and the copper particles are further cooled in the cooling water pool and recovered after dehydration.

[0038] The spray pressure of the spray head 4 is limited, so that the cooling water sprayed by the spray head 4 only cools the high-temperature molten copper and does not granulate it, that is, the cooling water sprayed by the spray head 4 does not disperse the molten copper flow; the temperature of the molten copper discharged from the equalizing chute is 1220-1270℃, and the temperature of the molten copper cooled by the cooling mechanism is reduced to below 1180℃, so that the molten copper can avoid explosion when it is granulated by the granulation water; at the same time, the extremely fine mist water particles sprayed by the spray head 4 are dispersed in the granulation tower 3, which effectively reduces the temperature in the granulation tower 3 and further inhibits the occurrence of explosion.

[0039] The equalizing chute is composed of a straight chute section 1 and an inclined chute section 2 which are connected with each other, one end of the straight chute section 1 away from the inclined chute section 2 is fixedly connected with and communicates with the outlet of the discharge chute, and the inclined chute section 2 is located in the granulation tower 3;

[0040] The straight chute section 1 is horizontally arranged, and the included angle between the center line in the length direction of the straight chute section 1 and the center line in the length direction of the inclined chute section 2 is 50-65 degrees; the purpose of this design is to eliminate the influence of the molten copper flow on the position of the falling point;

[0041] The intersection line of the groove bottom wall of the inclined groove section 2 and the lower end wall of the inclined groove section 2 is horizontally arranged, which can make the molten copper flow horizontally dispersed to form a waterfall-like downward flow, avoid the explosion caused by the fact that the molten copper flow cannot be fully granulated by the granulating water due to the concentration of the molten copper flow, and at the same time, can fully cool the molten copper flow by the cooling mechanism.

[0042] The lower end wall of the inclined groove section 2 is arranged at an acute angle with the groove outer bottom wall of the inclined groove section 2, and the inclined groove section 2 is arranged below the spray head 4; this design can greatly reduce the problem of slag hanging at the lower end of the inclined groove section 2, and eliminate the explosion problem caused by the fact that the molten copper flow is blocked by the slag and cannot be fully granulated by the granulating water.

[0043] Further specifically, the cooling mechanism further comprises an annular pipe 5, the center line of the annular pipe 5 in the pipe length direction defines a horizontal plane, a plurality of spray heads 4 are fixed and communicated on the annular pipe 5, the plurality of spray heads 4 are uniformly arranged along the circumference of the annular pipe 5, the spray directions of the plurality of spray heads 4 all point to the pipe center of the annular pipe 5, the annular pipe 5 is connected with an external high-pressure water source, and the molten copper flowing out of the inclined groove section 2 can pass through the inside of the annular pipe 5; the above design ensures that the molten copper flow can be uniformly cooled when passing through the annular pipe 5.

[0044] Further specifically, the annular pipe 5 is provided with two and arranged vertically in sequence, the material of the annular pipe 5 is 304 stainless steel, the annular pipe 5 is fixed with the granulating tower 3, the vertical positions of the two annular pipes 5 are opposite, a plurality of spray heads 4 are fixed and communicated on each annular pipe 5, the spray heads 4 on the two annular pipes 5 are vertically staggered, the spray heads 4 installed on the uppermost annular pipe 5 have relatively smaller atomized water particle size, the spray heads 4 installed on the lowermost annular pipe 5 have relatively larger atomized water particle size, that is, the atomized water particle size of the spray heads 4 installed on the uppermost annular pipe 5 is smaller than that of the spray heads 4 installed on the lowermost annular pipe 5, and the two annular pipes 5 are both connected with an external high-pressure water source; this design can further improve the cooling effect on the molten copper.

[0045] Further specifically, the cooling mechanism further comprises an adjusting valve one 6, one adjusting valve one 6 is connected in liquid path between each annular pipe 5 and the external high-pressure water source, the adjusting valve one 6 can control the spray pressure of the spray head 4, and ensure that the water sprayed by the spray head 4 will not disperse the molten copper flow; the spray pressure of the spray head 4 is 0.6-1.0 MPa, and the spray head 4 sprays cooling water in this spray pressure range, which will not disperse the molten copper flow.

[0046] Further specifically, the granulation spray head 7 is provided with multiple, multiple granulation spray heads 7 are arranged vertically in sequence, the spray direction of the granulation spray head 7 is horizontally arranged, the inner diameter of the spray port of multiple granulation spray heads 7 is sequentially increased along the vertical direction, that is, the water pressure and water volume of the granulation water sprayed by the granulation spray head 7 located above are lower than those of the granulation spray head 7 located below, and multiple granulation spray heads 7 are connected with external granulation water sources; the design of multiple granulation spray heads 7 can eliminate the influence of copper flow, copper grade, water pressure and relative granulation water volume of the granulation water on the granulation effect, and can make the molten copper flow be completely dispersed by the granulation water, overcome the explosion, and ensure the quality of the copper particles.

[0047] Further specifically, the granulation mechanism further comprises an adjusting valve 8, and each granulation spray head 7 is connected with an external granulation water source through a liquid path, and an adjusting valve 8 is arranged in the liquid path, and the adjusting valve 8 can be used to adjust the spray pressure of the granulation spray head 7.

[0048] Further specifically, the granulation spray head 7 is provided with two, the spray pressure of the uppermost granulation spray head 7 is 0.8Bar-1.2Bar, and the spray pressure of the lowermost granulation spray head 7 is 1.2Bar-2.0Bar. The design can solve the problem of explosion caused by the mismatch between the flow of molten copper and the water pressure and relative granulation water volume of the granulation water, and the uncontrollable problem of copper particles.

[0049] The process flow of the present application is as follows:

[0050] The molten copper flows into the equalizing trough from the discharge trough, the molten copper flows out of the outlet of the equalizing trough and sequentially passes through the inner side of the two annular pipes 5, and the cooling water sprayed by the spray head 4 can cool the molten copper flow when the molten copper flow passes through the two annular pipes 5; the molten copper flow in contact with the cooling water sprayed by the spray head 4 continues to fall, and the granulation water sprayed by the granulation spray head 7 can disperse the molten copper flow, so as to realize the granulation of the molten copper, and the sprayed granulation water and the granulated copper particles fall into the cooling water pool at the bottom of the granulation tower 3; and then the copper particles in the cooling water pool are subjected to slag-water separation.

[0051] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0052] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for preventing explosions in the granulation of copper matte by water quenching, characterized in that, The application relates to a granulation device for molten copper, which comprises the following components: a distribution launder, the outlet of the distribution launder being located in a granulation tower (3), and the inlet of the distribution launder being connected with a discharge launder; a cooling mechanism, which comprises a spray head (4) arranged in the granulation tower (3), the spray head (4) being located below the outlet of the distribution launder, the spray head (4) being connected with an external high-pressure water source, and the spray end of the spray head (4) being capable of aiming at the molten copper flowing out of the outlet of the distribution launder; a granulation mechanism, which comprises a granulation spray head (7) arranged in the granulation tower (3), the granulation spray head (7) being located below the spray head (4), the granulation spray head (7) being connected with an external granulation water source, and the spray end of the granulation spray head (7) being capable of aiming at the molten copper which has contacted with the cooling water sprayed by the spray head (4).

2. A device for preventing explosions in the granulation of copper matte by water quenching according to claim 1, characterized in that, The distribution launder is composed of a straight groove section (1) and an inclined groove section (2) which are communicated with each other, the end of the straight groove section (1) away from the inclined groove section (2) is fixedly connected with the outlet of the discharge launder, the inclined groove section (2) is located in the granulation tower (3), the intersection line between the groove bottom wall of the inclined groove section (2) and the lower end wall of the inclined groove section (2) is horizontally arranged, the lower end wall of the inclined groove section (2) is arranged at an acute angle with the groove outer bottom wall, and the spray head (4) is arranged below the inclined groove section (2).

3. A device for preventing explosions in the granulation of copper matte by water quenching according to claim 2, characterized in that, The cooling mechanism further comprises an annular pipe (5), the center line of the annular pipe (5) in the pipe length direction defines a horizontal plane, a plurality of spray heads (4) are fixedly connected with the annular pipe (5) and communicated with each other, the plurality of spray heads (4) are uniformly arranged along the circumferential direction of the annular pipe (5), the spray directions of the plurality of spray heads (4) all point to the pipe center of the annular pipe (5), the annular pipe (5) is connected with the external high-pressure water source, and the molten copper flowing out of the inclined groove section (2) can pass through the inside of the annular pipe (5).

4. A device for preventing explosions in the granulation of copper matte by water quenching according to claim 3, characterized in that, The annular pipe (5) is provided with two annular pipes (5) which are vertically arranged in sequence, the vertical positions of the two annular pipes (5) are opposite to each other, a plurality of spray heads (4) are fixedly connected with each annular pipe (5) and communicated with each other, the spray heads (4) on the two annular pipes (5) are vertically staggered, and the two annular pipes (5) are connected with the external high-pressure water source.

5. A device for preventing explosions in the granulation of copper matte by water quenching according to claim 4, characterized in that, The cooling mechanism further comprises an adjusting valve I (6), and one adjusting valve I (6) is connected in series in the liquid path between each annular pipe (5) and the external high-pressure water source.

6. A device for preventing explosions in the granulation of copper matte by water quenching according to claim 5, characterized in that, The spray pressure of the spray head (4) is 0.6-1.0 MPa.

7. A device for preventing explosions in the granulation of copper matte by water quenching according to claim 1, characterized in that, The granulation mechanism further comprises an adjusting valve II (8), and one adjusting valve II (8) is connected in series in the liquid path between each granulation spray head (7) and the external granulation water source.

8. A device for preventing explosions in the granulation of copper matte by water quenching according to claim 7, characterized in that, The granulation mechanism further comprises an adjusting valve II (8), and one adjusting valve II (8) is connected in series in the liquid path between each granulation spray head (7) and the external granulation water source.

9. A device for preventing explosions in the granulation of copper matte by water quenching according to claim 8, characterized in that, The spray pressure of the uppermost one of the two granulation spray heads (7) is 0.8-1.2 Bar, and the spray pressure of the lowermost one of the two granulation spray heads (7) is 1.2-2.0 Bar.

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