Improved process for separating fine particles in tungsten tailings

Abstract

The invention provides an improved process for separating fine particles from tungsten tailings, which comprises the following steps of: firstly, adding tailings with granularity smaller than 200 and tailings with granularity larger than 200 into a first cyclone for separation in a washing cyclone manner, and when the tailings with granularity larger than 200 are washed out and conveyed into a dewatering screen from an underflow port at the bottom of the first cyclone, discharging the tailings from the first cyclone; tailings with the granularity smaller than 200 are washed out and discharged into the thickener through an overflow opening in the first cyclone; the tailings with the granularity larger than 200 and the tailings with the granularity smaller than 200 are conveyed into a dewatering screen and a thickener respectively and then are screened and concentrated, and water carrying impurities is conveyed into a second cyclone to be subjected to secondary treatment. According to the improved process for separating the fine particles in the tungsten tailings, the tailings with the granularity smaller than 200 and the tailings with the granularity larger than 200 are effectively separated through the first cyclone, and the separation accuracy and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the field of tailings treatment, and in particular to an improved process for separating fine particles in tungsten tailings. Background Art

[0002] At present, the existing process of the tailings dry discharge plant is a combination of cyclone and dewatering vibrating screen.

[0003] In practical applications, this process has the following significant disadvantages:

[0004] Safety and environmental risks: After the tailings are concentrated by the hydrocyclone, the bottom flow enters the high-frequency vibration dewatering screen for dewatering, and the hydrocyclone overflow and the dewatering screen enter the primary sand pump room. The product on the screen is sold as coarse sand, but its water content is about 19%. Such a water content makes the product unsuitable for long-distance transportation and poses safety and environmental risks;

[0005] The screening effect is not ideal: The design capacity of the screening equipment of the tailings dry discharge plant is 600t / d, but the actual processing capacity reaches 1000t / d, which seriously exceeds the design load. This leads to unsatisfactory screening effect and cannot meet the actual production needs;

[0006] Incomplete particle size separation: According to the particle size analyzer, the particle size below 0.074 mm accounts for 19.16%, and the particle size below 0.01 mm accounts for 4%, which indicates that the coarse sand and fine sand are not separated cleanly, which seriously affects the transportation and sales of tailings;

[0007] The application of fine-grained tailings is limited: Due to the narrow application range of fine-grained tailings, large market influencing factors, and restricted bulk consumption, it is impossible to achieve full-load production of dry discharge, which greatly limits the efficiency and sustainable development of the tailings dry discharge process.

[0008] Therefore, it is necessary to provide an improved process for separating fine particles in tungsten tailings to solve the above technical problems. Summary of the invention

[0009] The present invention provides an improved process for separating fine particles in tungsten tailings, which solves the problems of safety and environmental protection risks, unsatisfactory screening effect, incomplete particle size separation and limited application of fine-grained tailings in the existing dry tailings discharge process in practical application.

[0010] In order to solve the above technical problems, the present invention provides an improved process for separating fine particles in tungsten tailings, comprising the following steps:

[0011] S1. First, the tailings with a particle size less than 200 and the tailings with a particle size greater than 200 are added to the first cyclone for separation by water washing and cyclone. When the tailings with a particle size greater than 200 are washed out by water, they are transported to the dewatering screen from the underflow port at the bottom of the first cyclone, and the tailings with a particle size less than 200 are discharged to the concentrator through the overflow port on the first cyclone;

[0012] S2, in S1, the tailings with a particle size greater than 200 and the tailings with a particle size less than 200 are respectively transported to the dewatering screen and the concentrator for screening and concentrating. The tailings with a particle size greater than 200 in the dewatering screen can be sold directly after treatment, and the water carrying impurities is transported to the second cyclone for secondary treatment. At the same time, the tailings with a particle size less than 200 in the concentrator are treated and then transported to the filter press for treatment;

[0013] S3, the tailings processed in the dewatering screen are transported to the second cyclone for treatment, and the tailings are circulated and transported to the first cyclone for further processing, while other tailings produced in the second cyclone are transported to the disc filter for processing;

[0014] S4. After the tailings processed by the concentrator in S2 are transported to the filter press for treatment, the resulting ore can be sold directly, and the resulting clean water is transported to the clean water tank;

[0015] S5. After the second cyclone in S3 is transported to the disc filter, the processed mineral material can be sold directly, and the generated clean water is transported to the clean water tank.

[0016] Preferably, the diameter of the first cyclone in S1 is 350, and the diameter of the second cyclone is 150.

[0017] Preferably, the filter press in S4 includes a processing table, a processing machine body is arranged inside the processing table, a base plate is connected to one side of the bottom of the working table, a water tank is installed on the surface of the base plate, a conveying device is arranged above the water tank, a flushing assembly is arranged on one side of the conveying device, the flushing assembly includes a connecting pipe, and a plurality of flushing heads are arranged at the bottom of the connecting pipe.

[0018] Preferably, the delivery device comprises a water pump, and both the input end and the output end of the water pump are connected to a delivery pipe.

[0019] Preferably, one end of the connecting pipe is connected to a pipeline, and one end of the pipeline is connected to one end of one of the delivery pipes.

[0020] Preferably, a movable component is arranged between the pipeline and the workbench, and the movable component includes a rectangular rod, a movable sleeve is sleeved on the surface of the rectangular rod, the top end of the movable sleeve is connected to a fixed rod, the top end of the fixed rod is connected to a fixed ring, and the fixed ring is connected to the surface of the pipeline.

[0021] Preferably, both ends of the rectangular rod are connected to fixed blocks, and the bottom ends of the fixed blocks are connected to the workbench.

[0022] Preferably, a filling pipe is connected to the top of the water tank.

[0023] Preferably, a vibration device is provided between the workbench and the processing machine body, the vibration device comprises a connecting rod, the surface of the connecting rod is provided with a mounting sleeve, a plurality of circular rods are symmetrically connected to the surface of the mounting sleeve, a mounting ring is connected between the plurality of circular rods, a vibration machine is provided inside the mounting ring, a vibration plate is connected to one side of the vibration machine, and the vibration plate is in contact with the processing machine body.

[0024] Preferably, a limiting sleeve is provided on the surface of the connecting rod and on one side of the mounting sleeve.

[0025] Compared with the related art, the improved process for separating fine particles in tungsten tailings provided by the present invention has the following beneficial effects:

[0026] The present invention provides an improved process for separating fine particles in tungsten tailings. The first cyclone is used to effectively separate tailings with a particle size of less than 200 and those with a particle size of more than 200, thereby improving the accuracy and efficiency of separation. Tailings with a particle size of more than 200 can be directly sold after being treated by a dewatering screen, thereby achieving effective recycling of coarse-grained tailings, improving resource utilization and increasing economic benefits. The ore materials produced after the tailings with a particle size of less than 200 are treated by a filter press can also be sold, thereby fully tapping the value of fine-grained tailings and reducing resource waste. The tailings treated by the dewatering screen are transported to the second cyclone. The tailings produced in the second cyclone are transported to the disc filter for processing, forming a circular treatment process to ensure that the tailings are fully treated and improve the overall treatment effect. The tailings treated in the second cyclone are circulated to the first cyclone for further processing, further strengthening the fine treatment of tailings and improving the degree of resource recovery. During the entire process, the clean water produced by the filter press and disc filter is transported to the clean water pool, which can realize the recycling of water resources, reduce water resource consumption in the production process, save costs, and also reduce the impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a first embodiment of an improved process for separating fine particles in tungsten tailings provided by the present invention;

[0028] Figure 2 A schematic structural diagram of a second embodiment of an improved process for separating fine particles in tungsten tailings provided by the present invention;

[0029] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown;

[0030] Figure 4 for Figure 2 A schematic diagram of the overall three-dimensional structure of the device shown;

[0031] Figure 5 A schematic structural diagram of a third embodiment of an improved process for separating fine particles in tungsten tailings provided by the present invention;

[0032] Figure 6 for Figure 5 An enlarged schematic diagram of part B is shown.

[0033] Numbers in the figure: 1, processing table; 2, main body of the processing machine; 3, bottom plate; 4, water tank;

[0034] 5. Conveying device; 51. Water pump; 52. Conveying pipe;

[0035] 6. Flushing assembly; 61. Connecting pipe; 62. Flushing head; 63. Pipeline;

[0036] 7. Moving assembly; 71. Rectangular rod; 72. Moving sleeve; 73. Fixed rod; 74. Fixed ring; 75. Fixed block;

[0037] 8. Filling pipe;

[0038] 9. Vibration device; 91. Connecting rod; 92. Mounting sleeve; 93. Round rod; 94. Mounting ring; 95. Vibration machine; 96. Vibration plate; 97. Limiting sleeve. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0040] First embodiment

[0041] Please refer to Figure 1 ,in, Figure 1 The schematic diagram of the structure of the first embodiment of an improved process for separating fine particles in tungsten tailings provided by the present invention. An improved process for separating fine particles in tungsten tailings comprises the following steps:

[0042] S1. First, the tailings with a particle size less than 200 and the tailings with a particle size greater than 200 are added to the first cyclone for separation by water washing and cyclone. When the tailings with a particle size greater than 200 are washed out by water, they are transported to the dewatering screen from the underflow port at the bottom of the first cyclone, and the tailings with a particle size less than 200 are discharged to the concentrator through the overflow port on the first cyclone;

[0043] S2, in S1, the tailings with a particle size greater than 200 and the tailings with a particle size less than 200 are respectively transported to the dewatering screen and the concentrator for screening and concentrating. The tailings with a particle size greater than 200 in the dewatering screen can be sold directly after treatment, and the water carrying impurities is transported to the second cyclone for secondary treatment. At the same time, the tailings with a particle size less than 200 in the concentrator are treated and then transported to the filter press for treatment;

[0044] S3, the tailings processed in the dewatering screen are transported to the second cyclone for treatment, and the tailings are circulated and transported to the first cyclone for further processing, while other tailings produced in the second cyclone are transported to the disc filter for processing;

[0045] S4. After the tailings processed by the concentrator in S2 are transported to the filter press for treatment, the resulting ore can be sold directly, and the resulting clean water is transported to the clean water tank;

[0046] S5. After the second cyclone in S3 is transported to the disc filter, the processed mineral material can be sold directly, and the generated clean water is transported to the clean water tank.

[0047] The diameter of the first cyclone in S1 is 350, and the diameter of the second cyclone is 150.

[0048] The first cyclone uses a water-washing cyclone to separate. The first cyclone uses the centrifugal force to make tailings of different particle sizes subject to different forces in the cyclone field.

[0049] During the dewatering screen treatment process, some water carrying impurities will be produced. This water cannot be discharged directly, but is transported to the second cyclone for secondary treatment. The purpose of this is to further separate the fine particles of tailings that may remain in the water, improve the degree of resource recovery, and reduce pollution to the environment.

[0050] Compared with the related art, the improved process for separating fine particles in tungsten tailings provided by the present invention has the following beneficial effects:

[0051] The present invention provides an improved process for separating fine particles in tungsten tailings. The first cyclone is used to effectively separate tailings with a particle size of less than 200 and those with a particle size of more than 200, thereby improving the accuracy and efficiency of separation. Tailings with a particle size of more than 200 can be directly sold after being treated by a dewatering screen, thereby achieving effective recycling of coarse-grained tailings, improving resource utilization and increasing economic benefits. The ore materials produced after the tailings with a particle size of less than 200 are treated by a filter press can also be sold, thereby fully tapping the value of fine-grained tailings and reducing resource waste. The tailings treated by the dewatering screen are transported to the second cyclone. The tailings produced in the second cyclone are transported to the disc filter for processing, forming a circular treatment process to ensure that the tailings are fully treated and improve the overall treatment effect. The tailings treated in the second cyclone are circulated to the first cyclone for further processing, further strengthening the fine treatment of tailings and improving the degree of resource recovery. During the entire process, the clean water produced by the filter press and disc filter is transported to the clean water pool, which can realize the recycling of water resources, reduce water resource consumption in the production process, save costs, and also reduce the impact on the environment.

[0052] Second embodiment

[0053] Please refer to Figure 2 , Figure 3 and Figure 4 Based on the improved process for separating fine particles in tungsten tailings provided in the first embodiment of the present application, the second embodiment of the present application proposes another improved process for separating fine particles in tungsten tailings. The second embodiment is only a preferred method of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0054] Specifically, the difference of the improved process for separating fine particles in tungsten tailings provided in the second embodiment of the present application is that, in the improved process for separating fine particles in tungsten tailings, the filter press in S4 includes a processing table 1, a processing machine body 2 is arranged inside the processing table 1, a bottom plate 3 is connected to one side of the bottom of the workbench 1, a water tank 4 is installed on the surface of the bottom plate 3, a conveying device 5 is arranged above the water tank 4, a flushing assembly 6 is arranged on one side of the conveying device 5, and the flushing assembly 6 includes a connecting pipe 61, and a plurality of flushing heads 62 are arranged at the bottom of the connecting pipe 61.

[0055] The conveying device 5 comprises a water pump 51 , and both the input end and the output end of the water pump 51 are connected to a conveying pipe 52 .

[0056] One end of the connecting pipe 61 is connected to a pipeline 63 , and one end of the pipeline 63 is connected to one end of one of the delivery pipes 52 .

[0057] A moving component 7 is arranged between the pipe 63 and the workbench 1, and the moving component 7 includes a rectangular rod 71, and a moving sleeve 72 is sleeved on the surface of the rectangular rod 71. The top of the moving sleeve 72 is connected to a fixed rod 73, and the top of the fixed rod 73 is connected to a fixed ring 74. The fixed ring 74 is connected to the surface of the pipe 63.

[0058] The use of the rectangular rod 71 and the movable sleeve 72 can move the flushing assembly 6 to one side of the workbench 1 when the processing machine body 2 is installed and disassembled. After adjusting the position of the flushing assembly 6, the flushing assembly 6 is moved and adjusted by pulling the fixed rod 73 under the action of the movable sleeve 72. Another delivery pipe 52 extends and is connected to the bottom of the inner wall of the water tank 4.

[0059] Both ends of the rectangular rod 71 are connected to fixing blocks 75 , and the bottom end of the fixing block 75 is connected to the workbench 1 .

[0060] A filling pipe 8 is connected to the top of the water tank 4 .

[0061] The working principle of the improved process for separating fine particles in tungsten tailings provided by the present invention is as follows:

[0062] During use, when the treatment machine body 2 is to be cleaned, the water pump 51 is first started to transport the water inside the water tank 4 to the inside of the connecting pipe 61 through the two delivery pipes 52 and the pipe 63. After the water is transported to the inside of the connecting pipe 61, the water inside the connecting pipe 61 is sprayed onto the treatment machine body 2 through multiple flushing heads 62 by the pressure of the water pump 51 for flushing.

[0063] Compared with the related art, the improved process for separating fine particles in tungsten tailings provided by the present invention has the following beneficial effects:

[0064] The present invention provides an improved process for separating fine particles in tungsten tailings. A bottom plate 3 with a water tank 4 is arranged at one end of a workbench 1, and a conveying device 5 and a connecting pipe 61 with a plurality of flushing heads 62 cooperate with each other to automatically clean the filter cloth in all directions after the filtration is completed, thereby improving the cleaning effect and efficiency.

[0065] Third embodiment

[0066] Please refer to Figure 5 and Figure 6 Based on the improved process for separating fine particles in tungsten tailings provided in the first embodiment of the present application, the third embodiment of the present application proposes another improved process for separating fine particles in tungsten tailings. The third embodiment is only a preferred method of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0067] Specifically, the difference of the improved process for separating fine particles in tungsten tailings provided in the third embodiment of the present application is that, in the improved process for separating fine particles in tungsten tailings, a vibration device 9 is arranged between the workbench 1 and the processing machine body 2, and the vibration device 9 includes a connecting rod 91, and the surface of the connecting rod 91 is provided with a mounting sleeve 92, and the surface of the mounting sleeve 92 is symmetrically connected with a plurality of circular rods 93, and mounting rings 94 are connected between the plurality of circular rods 93, and a vibrator 95 is arranged inside the mounting ring 94, and a vibration plate 96 is connected to one side of the vibrator 95, and the vibration plate 96 is in contact with the processing machine body 2.

[0068] One end of the connecting rod 91 is connected to the side of the workbench 1. The number of the plurality of circular rods 93 is four. The four circular rods 93 are grouped into two. The two groups of circular rods 93 are symmetrically connected to the surface of the mounting sleeve 92. The use of the limiting sleeve 97 facilitates the fixation between the entire device and the connecting rod 91.

[0069] A limiting sleeve 97 is sleeved on the surface of the connecting rod 91 and located on one side of the mounting sleeve 92 .

[0070] The working principle of the improved process for separating fine particles in tungsten tailings provided by the present invention is as follows:

[0071] During use, when cleaning the residue in the processing machine body 2, first, the mounting ring 94 with multiple circular rods 93 and the vibrator 95 is mounted on the surface of the connecting rod 91 through the mounting sleeve 92. After the vibrator 95 is installed on the surface of the connecting rod 91, the vibration plate 96 on one side of the vibrator 95 contacts the side of the processing machine body 2, and then the limiting sleeve 97 is used to connect with the connecting rod 92. Finally, the vibrator 95 is started to vibrate the vibration plate 96 to the processing machine body 2, so that the internal residue falls off by vibration.

[0072] Compared with the related art, the improved process for separating fine particles in tungsten tailings provided by the present invention has the following beneficial effects:

[0073] The present invention provides an improved process for separating fine particles in tungsten tailings. A vibration device 9 is arranged between a workbench 1 and a processor body 2 to generate vibration during unloading, so that the filter cake and the filter plate are loosened, which facilitates the filter cake to fall off.

[0074] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An improved process for separating fine particles from tungsten tailings, characterized in that: The following steps are involved: S1. First, the tailings with a particle size less than 200 and the tailings with a particle size greater than 200 are added to the first cyclone for separation by water washing and cyclone. When the tailings with a particle size greater than 200 are washed out by water, they are transported to the dewatering screen from the underflow port at the bottom of the first cyclone, and the tailings with a particle size less than 200 are discharged to the concentrator through the overflow port on the first cyclone; S2, in S1, the tailings with a particle size greater than 200 and the tailings with a particle size less than 200 are respectively transported to the dewatering screen and the concentrator for screening and concentrating. The tailings with a particle size greater than 200 in the dewatering screen can be sold directly after treatment, and the water carrying impurities is transported to the second cyclone for secondary treatment. At the same time, the tailings with a particle size less than 200 in the concentrator are treated and then transported to the filter press for treatment; S3, the tailings processed in the dewatering screen are transported to the second cyclone for treatment, and the tailings are circulated and transported to the first cyclone for further processing, while other tailings produced in the second cyclone are transported to the disc filter for processing; S4. After the tailings processed by the concentrator in S2 are transported to the filter press for treatment, the resulting ore can be sold directly, and the resulting clean water is transported to the clean water tank; S5. After the second cyclone in S3 is transported to the disc filter, the processed mineral material can be sold directly, and the generated clean water is transported to the clean water tank.

2. The improved process for separating fine particles in tungsten tailings according to claim 1, characterized in that: The diameter of the first cyclone in S1 is 350, and the diameter of the second cyclone is 150.

3. The improved process for separating fine particles in tungsten tailings according to claim 1, characterized in that: The filter press in S4 includes a processing table, a processing machine body is arranged inside the processing table, a bottom plate is connected to one side of the bottom of the working table, a water tank is installed on the surface of the bottom plate, a conveying device is arranged above the water tank, a flushing assembly is arranged on one side of the conveying device, the flushing assembly includes a connecting pipe, and a plurality of flushing heads are arranged at the bottom of the connecting pipe.

4. The improved process for separating fine particles in tungsten tailings according to claim 3 is characterized in that: The delivery device comprises a water pump, and both the input end and the output end of the water pump are connected with a delivery pipe.

5. The improved process for separating fine particles in tungsten tailings according to claim 4 is characterized in that: One end of the connecting pipe is connected to a pipeline, and one end of the pipeline is connected to one end of one of the delivery pipes.

6. The improved process for separating fine particles in tungsten tailings according to claim 5, characterized in that: A moving component is arranged between the pipeline and the workbench, and the moving component comprises a rectangular rod, a moving sleeve is sleeved on the surface of the rectangular rod, a top end of the moving sleeve is connected to a fixed rod, a top end of the fixed rod is connected to a fixed ring, and the fixed ring is connected to the surface of the pipeline.

7. The improved process for separating fine particles in tungsten tailings according to claim 6, characterized in that: Both ends of the rectangular rod are connected with fixed blocks, and the bottom end of the fixed block is connected to the workbench.

8. The improved process for separating fine particles in tungsten tailings according to claim 3, characterized in that: The top of the water tank is connected with a filling pipe.

9. The improved process for separating fine particles in tungsten tailings according to claim 3, characterized in that: A vibration device is arranged between the workbench and the processing machine body, and the vibration device includes a connecting rod, a mounting sleeve is provided on the surface of the connecting rod, a plurality of circular rods are symmetrically connected to the surface of the mounting sleeve, a mounting ring is connected between the plurality of circular rods, a vibration machine is arranged inside the mounting ring, a vibration plate is connected to one side of the vibration machine, and the vibration plate is in contact with the processing machine body.

10. The improved process for separating fine particles in tungsten tailings according to claim 9, characterized in that: A limiting sleeve is sleeved on the surface of the connecting rod and located on one side of the mounting sleeve.

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