Noise reduction and pressure relief device for concentrate dehydration process in copper smelting slag beneficiation

Abstract

The utility model relates to a noise reduction and pressure relief device for a concentrate dehydration process in copper smelting slag beneficiation, and belongs to the technical field of copper smelting. Comprising a box body, partition plates, air inlet pipes and exhaust pipes, a partition plate is vertically installed in the box body, and an inner cavity of the box body is divided into a serpentine channel by the partition plate. An air inlet pipe and an exhaust pipe are arranged on the box body, the air inlet pipe is connected with one end of the serpentine channel, and the exhaust pipe is connected with the other end of the serpentine channel; the air inlet pipe is arranged in a reducing mode, and the large-pipe-diameter end of the air inlet pipe is connected with the box body. A porous silencing material is arranged in the exhaust pipe; a blow-off pipe is arranged at the bottom of the side surface of the box Through the reducing design of the air inlet pipe, the multi-cavity structure of the box body and the design of the exhaust pipe, the exhaust pressure and noise are effectively reduced, the problem of occupational health hazards caused by large exhaust noise is solved, meanwhile, the influence of high-pressure gas on the site environment is reduced, and the site is sanitary and easier to clean and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper smelting technical field especially relates to a kind of for copper smelting slag mineral processing in concentrate dehydration process's sound attenuation pressure relief device. BACKGROUND

[0002] In copper smelting slag mineral processing operation, the concentrate selected usually adopts vertical filter press to carry out dehydration operation. The blowing drying step in dehydration process needs to blow compressed air into filter cake to further remove the moisture in filter cake. Then the mixture of wind, water and ore is discharged to concentrate thickening tank. But this processing method has significant problems: on the one hand, it will produce a lot of noise, which threatens the health of on-site workers; on the other hand, since the compressed air pressure is as high as 0.6 MPa or more, it will have a great impact on the on-site environment after being sprayed, making the on-site sanitary condition worse and difficult to clean. SUMMARY

[0003] To solve or partially solve the problems in the related art, the utility model provides a sound attenuation pressure relief device for concentrate dehydration process in copper smelting slag mineral processing, aiming to solve the technical problem that the drying air of filter cake directly introduced into the thickening tank will produce a lot of noise and pollute the surrounding environment.

[0004] The sound attenuation pressure relief device for concentrate dehydration process in copper smelting slag mineral processing includes a box, a partition, an air inlet pipe and an air outlet pipe.

[0005] The partition is vertically installed in the box, and the adjacent two partitions are alternately connected with the inner top and inner bottom of the box, so as to divide the internal cavity of the box into a serpentine channel.

[0006] The air inlet pipe and the air outlet pipe are arranged on the box, the air inlet pipe is connected with one end of the serpentine channel, and the air outlet pipe is connected with the other end of the serpentine channel. The air inlet pipe is arranged with variable diameter, and the end with larger diameter is connected with the box. The air outlet pipe is provided with porous sound attenuation material.

[0007] The side bottom of the box is provided with a blowdown pipe.

[0008] In some schemes, the air inlet pipe is arranged with variable diameter twice, and the variable diameter multiples are 1.2 times and 1.4 times respectively.

[0009] In some schemes, the end of the air outlet pipe is provided with an elbow, and the air outlet end of the elbow is arranged vertically downward.

[0010] In some schemes, the air outlet pipe is arranged with at least one.

[0011] In some schemes, the outer side of the box is provided with a reinforcing rib.

[0012] The technical scheme provided by the utility model can have the following beneficial effects:

[0013] The application effectively reduces the pressure and noise of exhaust gas by the variable-diameter design of the air inlet pipe, the multi-cavity structure of the box body and the design of the exhaust pipe, solves the problem of occupational health hazards caused by high exhaust noise, reduces the influence of high-pressure gas on the on-site environment, and makes the on-site sanitation easier to clean and maintain.

[0014] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the utility model will become more apparent through a more detailed description of the utility model exemplary embodiments, which are described in conjunction with the accompanying drawings, in which the same reference numerals generally represent the same components throughout the utility model exemplary embodiments.

[0016] Figure 1 is a structural schematic view of the sound attenuation pressure relief device shown in the utility model embodiments;

[0017] Figure 2 is another structural schematic view of the sound attenuation pressure relief device shown in the utility model embodiments;

[0018] Figure 3 is an assembly schematic view of the exhaust pipe and elbow of the sound attenuation pressure relief device shown in the utility model embodiments;

[0019] Reference signs:

[0020] 1, box body; 2, partition; 3, air inlet pipe; 4, exhaust pipe; 5, porous sound attenuation material; 6, elbow; 7, reinforcing rib. DETAILED DESCRIPTION

[0021] The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the utility model is not limited to the content.

[0022] As shown in Figure 1 , Figure 2 and Figure 3 , the application provides a sound attenuation pressure relief device for concentrate dehydration process in copper smelting slag beneficiation, which comprises a box body 1, a partition 2, an air inlet pipe 3 and an exhaust pipe 4.

[0023] The box 1 is vertically installed with a partition plate 2, which is also made of 10mm-thick stainless steel plate. The partition plate 2 is evenly spaced along the length direction of the box 1, and the adjacent two partition plates 2 are alternately connected with the inner top and inner bottom of the box 1, so as to divide the internal cavity of the box 1 into a serpentine channel. Specifically, the box 1 is provided with five partition plates 2, the first partition plate 2 is fixedly connected with the inner top surface of the box 1, the second partition plate 2 is fixedly connected with the inner bottom of the box 1, the third partition plate 2 is fixedly connected with the inner top surface of the box 1, and the five partition plates 2 are alternately arranged in this way. The five partition plates 2 divide the internal cavity of the box 1 into six cavities which are connected with each other and arranged in sequence, forming a serpentine channel. The gas enters and flows through each cavity in sequence. Each cavity corresponds to a buffering and processing space. When the gas enters the cavity, its flow direction and speed will change, and the gas flow will be further dispersed. In the cavity, the gas continuously collides and mixes, and the pressure gradually homogenizes and further decreases. Moreover, the design of multiple cavities increases the flow path and residence time of the gas, so that the impurities and moisture in the gas have more opportunities to precipitate, providing conditions for subsequent pollution discharge operation. The series structure of multiple cavities also has a certain damping effect on the gas, consuming the energy of the gas, thereby assisting to achieve the effects of pressure relief and noise reduction.

[0024] The box 1 is provided with an air inlet pipe 3 and an air outlet pipe 4. The air inlet pipe 3 is connected with one end of the serpentine channel, and the air outlet pipe 4 is connected with the other end of the serpentine channel.

[0025] The air inlet pipe 3 is provided with variable diameter, and the end with larger diameter is connected with the box 1. In some specific embodiments, the air inlet pipe 3 is provided with variable diameter twice, and the variable diameter multiples are 1.2 and 1.4 respectively. The variable diameter changes the flow rate and pressure of the gas by changing the pipe diameter. When the gas enters the larger pipe diameter from the smaller pipe diameter (the first variable diameter is 1.2), according to the principle of fluid mechanics, the flow rate of the gas will decrease, and the pressure will also decrease accordingly, thereby achieving the effect of preliminary pressure relief. The second variable diameter is 1.4, which further expands the pipe diameter, so that the gas reduces the flow rate and pressure before entering the cavities of the box 1, thereby avoiding the direct impact of high-pressure and high-speed gas on the inside of the box 1, reducing the noise and damage to the device caused by the impact of the gas, and also being conducive to more stable gas treatment in the cavities.

[0026] The air outlet pipe 4 is provided with a porous sound-absorbing material 5. The porous structure of the porous sound-absorbing material 5 can make the sound waves reflect and scatter multiple times in it, converting sound energy into heat energy and consuming it, thereby greatly reducing the noise of the exhaust gas.

[0027] The side bottom of the box 1 is provided with a blowdown pipe, and a valve can be arranged on the blowdown pipe, so that the impurities and water precipitated in the bottom of the box 1 can be discharged from the inside of the device by periodically opening the blowdown valve, the inside of the device is kept clean, and the normal operation and processing effect of the device are maintained. Specifically, three blowdown pipes are arranged, and the number and frequency of the three blowdown valves can be flexibly selected according to the actual precipitation condition, so that the efficiency and flexibility of blowdown are improved.

[0028] In use, the air inlet pipe 3 is connected to the exhaust pipe of the filter cake drying air through a pipeline, so that the mixture of air, water and ore is introduced into the device, and the blowdown pipe is connected to the thickening tank through a pipeline, so that the ore precipitated in the box 1 is introduced into the thickening tank for treatment.

[0029] In some embodiments, the end of the exhaust pipe 4 is provided with an elbow 6, and the gas outlet end of the elbow 6 is arranged vertically downward. This design not only changes the direction of gas discharge, avoids the direct upward injection of gas to the surrounding environment, but also further consumes the gas energy through the reflection and collision of the gas at the elbow 6 to assist pressure relief. In addition, the longer pipe increases the flow distance of the gas and prolongs the residence time of the gas in the pipe, so that the pressure relief and sound attenuation process is more sufficient, and the overall performance of the device is improved.

[0030] In this embodiment, at least one exhaust pipe 4 is arranged, and the number or diameter of the exhaust pipe 4 can be increased according to different working conditions during actual use, so as to achieve sufficient pressure relief.

[0031] In some embodiments, the outer side of the box 1 is provided with a reinforcing rib 7, and the reinforcing rib 7 adopts a channel steel with a back rib. The channel steel has good bending resistance, and by being reasonably arranged outside the box 1 and cooperating with the back rib, the structural rigidity of the box 1 can be enhanced, the stress can be dispersed, the deformation of the box 1 under the long-term bearing of internal gas pressure and external environmental action can be prevented, and the service life and safety of the device can be improved.

[0032] The above has described various embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical applications or improvements of the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A sound attenuation and pressure relief device for use in a concentrate dewatering process in the beneficiation of copper smelter slag, characterized by: The device comprises a box (1), a partition (2), an air inlet pipe (3) and an air outlet pipe (4). The partition (2) is vertically installed in the box (1) and is evenly spaced along the length direction of the box (1). Adjacent two partitions (2) are alternately connected with the inner top and bottom of the box (1), so as to divide the internal cavity of the box (1) into a serpentine channel. The box (1) is provided with the air inlet pipe (3) and the air outlet pipe (4). The air inlet pipe (3) is connected with one end of the serpentine channel, and the air outlet pipe (4) is connected with the other end of the serpentine channel. The air inlet pipe (3) is provided with a variable diameter, and the end with a larger diameter is connected with the box (1). The air outlet pipe (4) is provided with a porous sound-absorbing material (5). The side bottom of the box (1) is provided with a blowdown pipe.

2. The sound-absorbing pressure relief device according to claim 1, wherein: The air inlet pipe (3) is provided with two variable diameters, and the variable diameter multiples are 1.2 times and 1.4 times, respectively.

3. The sound-absorbing pressure relief device according to claim 1, wherein: The end of the air outlet pipe (4) is provided with an elbow (6), and the gas outlet end of the elbow (6) is vertically downward.

4. The sound-absorbing pressure relief device according to claim 1 or 3, wherein: The air outlet pipe (4) is provided with at least one.

5. The sound-absorbing pressure relief device according to claim 1, wherein: The outer side of the box (1) is provided with a reinforcing rib (7).

Images