Improved thickening device for sulfur concentrate

Abstract

The utility model relates to the technical field of mineral separation in the metallurgical industry, and discloses an improved thickening device for sulfur concentrate, which comprises a concentration barrel, the bottom end of the concentration barrel is horizontally arranged, the bottom end of the concentration barrel is connected with a collection hopper, and the collection hopper is provided with a discharge port for discharging high-concentration ore pulp outwards; the feeding structure is arranged at the top end of the concentration barrel and is provided with a central feeding barrel located in the middle of the concentration barrel, and the feeding structure is configured to enable the flow direction of a flocculation solution and the flow direction of ore pulp to mutually generate shearing force and impulsive force and enable the flocculation solution and the ore pulp to synchronously flow towards the central feeding barrel; and the ore flows downwards into the collecting hopper through the central feeding cylinder to obtain high-concentration ore pulp. According to the utility model, energy supply can be reduced, the structure of a flocculating agent cannot be damaged while ore pulp and the flocculating agent are fully mixed, and the flocculation effect of the ore pulp is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of mineral processing in the metallurgical industry, specifically to an improved thickening device for sulfur concentrate. Background Technology

[0002] In the beneficiation process of sulfur concentrate, solids and liquids in the slurry are separated by concentration and sedimentation. The slurry with a low solid content (e.g., 10% to 20%) is concentrated by gravity sedimentation into a slurry with a higher solid content (e.g., 45% to 55%), while the upper part becomes clarified water that overflows from the top edge of the concentration tank, thus achieving the purpose of solid-liquid separation.

[0003] However, in actual production, multi-stage sedimentation tanks are generally used for natural concentration and sedimentation. However, this method requires a large area and a long concentration and sedimentation time, resulting in low efficiency in the concentration and sedimentation of sulfur concentrate into underflow slurry. To solve the above technical problems, ordinary rake thickeners are currently used. The stirring device of the ordinary rake thickener is used to mix the slurry and flocculant. However, this method requires electric power to drive the stirring device, which increases energy consumption. At the same time, the structure of the flocculant is easily damaged during the stirring process, resulting in flocculant failure and poor flocculation effect. Utility Model Content

[0004] The present invention aims to provide an improved thickening device for sulfur concentrate, which can reduce energy supply and allow the slurry and flocculant to be fully mixed without damaging the structure of the flocculant, thereby improving the flocculation effect of the slurry.

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

[0006] 1) An improved thickening device for sulfur concentrate, comprising:

[0007] A thickening tank, the bottom of which is horizontally positioned, is connected to a collection hopper at the bottom of which has a discharge port for discharging high-concentration slurry.

[0008] The feeding structure is located at the top of the thickening tank and has a central feed cylinder located in the middle of the thickening tank. The feeding structure is configured to generate shear force between the flow direction of the flocculation solution and the flow direction of the slurry, and to allow the flocculation solution and the slurry to flow synchronously toward the central feed cylinder, and flow downward into the collection hopper through the central feed cylinder to obtain a high-concentration slurry.

[0009] This invention employs a concentration tank to allow the slurry and flocculation solution to undergo a flocculation reaction. The flocculation solution enables the slurry to quickly flocculate into flocs and accelerates the concentration and precipitation of the slurry, allowing the underflow slurry to quickly reach a high concentration.

[0010] In this process, a combination of feeding structure and collection hopper is adopted. The feeding structure pushes the flocculation solution toward the slurry and drives the slurry to flow toward the central feed cylinder. This generates shear force between the flow direction of the flocculation solution and the flow direction of the slurry. Under the action of shear force, the flocculation solution and the slurry are fully mixed and flow with the slurry.

[0011] Therefore, compared with the prior art, this utility model adopts a non-powered driving method to fully mix the flocculation solution and the slurry, maintain the flocculation structure of the dissolved flocculant in the flocculation solution, and simultaneously enter the collection hopper through the central feed cylinder after the flocculation solution and the slurry are mixed. In the collection hopper, the material is further collected and mixed to produce a flocculation reaction, improve the flocculation effect of the slurry, and is discharged through the collection hopper to obtain a high-concentration slurry.

[0012] 2) An improved thickening device for sulfur concentrate according to 1), wherein:

[0013] The bottom of the concentration tank is fixed with a support frame, and the collection hopper is located in the support frame. The support frame includes a connecting ring welded to the bottom of the concentration tank. Several support columns are welded to the bottom of the connecting ring and are evenly distributed along the circumference. Each support column has an inclined connecting rod between it and the collection hopper. The two ends of the connecting rod are welded to the support column and the collection hopper, respectively.

[0014] This utility model uses a support frame to support the concentration tank, so that the concentration tank remains stable during the concentration and sedimentation process. At the same time, the collection hopper is set in the support frame and welded to the connecting rod in the support frame, so that the support frame can support and strengthen the collection hopper.

[0015] 3) An improved thickening device for sulfur concentrate as described in 2), wherein:

[0016] The outer side of the connecting ring is provided with an inwardly recessed groove along its circumference. Several reinforcing plates with a triangular structure are welded into the groove along the circumference of the connecting ring. At least two reinforcing plates are located at the support column at the bottom of the connecting ring.

[0017] The connecting ring designed in this utility model is used to connect the concentration tank and all the support columns. In order to strengthen the connection between the concentration tank and all the support columns, several reinforcing plates with a triangular structure are used in the groove of the connecting ring to increase the strength of the connecting ring. At the same time, at least two reinforcing plates are designed in the connecting ring to correspond to the support columns at the bottom of the connecting ring, thereby strengthening the connection between the support columns and the connecting ring, thereby improving the overall support strength of the concentration tank.

[0018] 4) An improved thickening device for sulfur concentrate as described in 2), wherein:

[0019] Each adjacent support column is connected by an "X"-shaped reinforcing rib. The reinforcing ribs designed in this invention connect adjacent support columns, thereby improving the overall strength of all support columns.

[0020] 5) An improved thickening device for sulfur concentrate according to 2), wherein:

[0021] The outer surface of the concentration tank is evenly welded with several layers of reinforcing rings along its height direction, and several hanging lugs are evenly distributed around the circumference of the reinforcing ring located at the top of the concentration tank.

[0022] This invention features several layers of welded reinforcing rings on the outer surface of the concentration tank to enhance its strength. Additionally, several lugs on the reinforcing ring at the top of the concentration tank facilitate lifting and moving the tank to a designated location for installation using a crane.

[0023] 6) An improved thickening device for sulfur concentrate according to 1), wherein:

[0024] The feeding structure includes a feeding channel located at the top of the concentration tank. The discharge position of the feeding channel faces the opening of the central feed cylinder. The feeding channel is used to transport slurry into the central feed cylinder. An injection pipe is installed at the inlet position of the feeding channel, and the opening of the injection pipe faces into the feeding channel.

[0025] This invention employs a feeding channel to transport slurry into a thickening tank. During the transport process, a flocculating solution is sprayed into the feeding channel through a spray pipe. The flocculating solution generates a water flow impact force during the spraying process, which mixes the flocculating solution with the slurry. The mixture is then transported along the feeding channel into the central feed cylinder. The liquid mixture of flocculating solution and slurry falls vertically into the thickening tank through the central feed cylinder and spreads around the thickening tank. During this process, the flocculating solution and slurry undergo rapid flocculation reaction, allowing for rapid solid-liquid separation of the slurry. The resulting high-concentration sulfur concentrate slurry is discharged outward through the collection hopper.

[0026] 7) An improved thickening device for sulfur concentrate according to 1), wherein:

[0027] The feeding structure also includes several overflow boxes set on the top of the thickening tank. The several overflow boxes are evenly arranged along the circumference of the thickening tank. The overflow boxes have overflow ports on the side facing the central feed cylinder. The overflow ports are used to collect the clarified liquid from the solid-liquid separation of the slurry.

[0028] The several overflow boxes designed in this invention are used to store the clarified liquid generated after the flocculation reaction of sulfur concentrate slurry. Here, when the flocculation solution reacts with the slurry, it is concentrated by gravity sedimentation into a bottom slurry with a high solids content (e.g., 45%–55%), while the top of the concentration tank becomes the clarified liquid. The clarified liquid enters the overflow box through the overflow port, and then the clarified liquid in the overflow box is pumped out, thereby preventing the clarified liquid from overflowing from the concentration tank and affecting the surrounding environment.

[0029] 8) An improved thickening device for sulfur concentrate according to 1), wherein:

[0030] Several fixing rods are welded around the central feed cylinder. Adjacent fixing rods intersect and wrap around the central feed cylinder. The middle part of the fixing rod is welded to the side of the central feed cylinder, and the two ends of the fixing rod are welded to the two sides of the top of the concentration tank.

[0031] This utility model uses tree root fixing rods arranged in a cross shape to wrap around the central feed cylinder, and the two ends of the fixing rods are welded to the two sides of the top of the concentration tank. At the same time, the side of the central feed cylinder is welded to the fixing rods, thereby stabilizing the central position of the central feed cylinder.

[0032] 9) An improved thickening device for sulfur concentrate according to 1), wherein:

[0033] A filter screen is installed inside the discharge port. The filter screen at the discharge port of the hopper creates resistance to the settling of the slurry, thereby increasing the settling time of the slurry and fully squeezing out the water.

[0034] Compared with the prior art, this utility model also has the following technical effects:

[0035] Compared with existing technologies, this invention changes the way slurry and flocculant are mixed. It utilizes the impact force of the flocculation solution and the shear force generated by the flow direction of the flocculation solution and the flow direction of the slurry to enable the flocculation solution to be quickly and uniformly mixed with the slurry without power, reducing energy supply. It also allows the slurry and flocculation solution to be fully mixed in the absence of designed stirring settings, while maintaining the structure of the flocculant in the flocculation solution and improving the flocculation effect of the slurry. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of an improved thickening device for sulfur concentrate according to the present invention.

[0037] Figure 2 This is a top view of an improved thickening device for sulfur concentrate according to the present invention. Detailed Implementation

[0038] The following detailed description illustrates the specific implementation method:

[0039] The reference numerals in the accompanying drawings of the instruction manual include: 1. Concentration tank; 2. Reinforcing ring; 3. Connecting ring; 4. Reinforcing plate; 5. Collection hopper; 6. Support column; 7. Connecting rod; 8. Reinforcing rib; 9. Filter screen; 10. Hanging ear; 11. Central feed cylinder; 12. Overflow box; 13. Feeding channel; 14. Spray pipe; 15. Overflow port; 16. Fixing rod.

[0040] See the example. Figure 1 and Figure 2 As shown in this embodiment, an improved thickening device for sulfur concentrate includes a thickening tank 1 and a feeding structure. The thickening tank 1 is horizontally positioned at its bottom, and a collecting hopper 5 is connected to the bottom of the thickening tank 1. The collecting hopper 5 has a discharge port for discharging high-concentration slurry. A filter screen 9 is installed inside the discharge port. The filter screen 9 at the discharge port of the collecting hopper 5 creates resistance to the settling of the slurry, thereby increasing the settling time of the slurry and fully squeezing out the water.

[0041] In addition, a support frame is fixed at the bottom of the concentration tank 1, and the collection hopper 5 is located in the support frame. The support frame includes a connecting ring 3 welded to the bottom of the concentration tank 1. Several support columns 6 are evenly distributed along the circumference at the bottom of the connecting ring 3. Each support column 6 has an inclined connecting rod 7 between it and the collection hopper 5. The two ends of the connecting rod 7 are welded to the support column 6 and the collection hopper 5, respectively.

[0042] A support frame is used to support the concentration tank 1, so that the concentration tank 1 remains stable during the concentration and sedimentation process. At the same time, the collection hopper 5 is set in the support frame and welded to the connecting rod 7 in the support frame, so that the support frame can support and strengthen the collection hopper 5.

[0043] Meanwhile, in order to strengthen the connection between the connecting ring 3 and the support column 6, an inwardly recessed groove is provided on the outer side of the connecting ring 3 along its circumference. Several reinforcing plates 4 with a triangular structure are welded in the groove along the circumference of the connecting ring 3. At least two reinforcing plates 4 are located at the bottom of the connecting ring 3.

[0044] The designed connecting ring 3 is used to connect the concentration tank 1 to all the support columns 6. In order to strengthen the connection between the concentration tank 1 and all the support columns 6, several triangular reinforcing plates 4 are used in the groove of the connecting ring 3 to increase the strength of the connecting ring 3. At the same time, at least two reinforcing plates 4 are designed in the connecting ring 3 to correspond to the support columns 6 at the bottom of the connecting ring 3, thereby strengthening the connection between the support columns 6 and the connecting ring 3, thereby improving the overall support strength of the concentration tank 1.

[0045] In addition, each adjacent support column 6 is connected by an "X"-shaped reinforcing rib 8. The reinforcing rib 8 designed in this embodiment connects adjacent support columns 6, thereby improving the overall strength of all support columns 6.

[0046] On the other hand, several layers of reinforcing rings 2 are evenly welded to the outer surface of the concentration tank 1 along its height direction, and several hanging lugs 10 are evenly distributed around the circumference of the reinforcing ring 2 located at the top of the concentration tank 1. The design of welding several layers of reinforcing rings 2 on the outer surface of the concentration tank 1 is to enhance the strength of the concentration tank 1. At the same time, the several hanging lugs 10 on the reinforcing ring 2 at the top of the concentration tank 1 are for the convenience of lifting the concentration tank 1 with a crane and moving it to a designated position for installation.

[0047] In this embodiment, the feeding structure is set at the top of the thickening tank 1 and has a central feed cylinder 11 located in the middle of the thickening tank 1. The feeding structure is configured to allow the flow direction of the flocculation solution to generate shear force with the flow direction of the slurry, and to allow the flocculation solution and the slurry to flow synchronously toward the central feed cylinder 11, and flow downward into the collection hopper 5 through the central feed cylinder 11 to obtain a high-concentration slurry.

[0048] A concentration tank 1 is used to allow the slurry and the flocculation solution to undergo a flocculation reaction. The flocculation solution can make the slurry quickly flocculate into flocs and accelerate the concentration and precipitation of the slurry, so that the underflow slurry can quickly become a high-concentration slurry.

[0049] In this process, the feeding structure is combined with the collection hopper 5. The feeding structure pushes the flocculation solution toward the slurry and drives the slurry to flow toward the central feed cylinder 11. This generates a shear force between the flow direction of the flocculation solution and the flow direction of the slurry. Under the action of the shear force, the flocculation solution and the slurry are fully mixed and flow with the slurry.

[0050] Therefore, compared with the prior art, this embodiment uses a non-powered drive to fully mix the flocculation solution and the slurry, maintaining the flocculation structure of the dissolved flocculant in the flocculation solution. After the flocculation solution and the slurry are mixed, they simultaneously enter the collection hopper 5 through the central feed cylinder 11. In the collection hopper 5, the materials are further collected and mixed to produce a flocculation reaction, improving the flocculation effect of the slurry. The slurry is then discharged through the collection hopper 5 to obtain a high-concentration slurry.

[0051] In addition, the feeding structure includes a feeding channel 13 set at the top of the thickening tank 1. The discharge position of the feeding channel 13 faces the opening of the central feed cylinder 11. The feeding channel 13 is used to transport slurry into the central feed cylinder 11. An injection pipe 14 is installed at the feeding position of the feeding channel 13. The opening of the injection pipe 14 faces into the feeding channel 13.

[0052] The slurry is fed into the thickening tank 1 through the feeding channel 13. During the feeding process, the flocculation solution is sprayed into the feeding channel 13 through the spray pipe 14. The flocculation solution generates water flow impact force during the spraying process. The water flow impact force causes the flocculation solution and the slurry to mix with each other and be conveyed into the cylinder opening of the central feed cylinder 11 along the feeding channel 13. The liquid mixture of flocculation solution and slurry falls vertically into the thickening tank 1 through the central feed cylinder 11 and spreads around the thickening tank 1. During this process, the flocculation solution and slurry react rapidly to form flocculation, allowing the slurry to quickly separate into solid and liquid. The resulting high-concentration sulfur concentrate slurry is discharged out through the collection hopper 5.

[0053] Meanwhile, the feeding structure also includes several overflow boxes 12 set on the top of the thickening tank 1. The several overflow boxes 12 are evenly arranged along the circumference of the thickening tank 1. The overflow boxes 12 have overflow ports 15 on their sides facing the central feed cylinder 11. The overflow ports 15 are used to collect the clarified liquid from the solid-liquid separation of the slurry.

[0054] The several overflow boxes 12 are designed to store the clarified liquid generated after the flocculation reaction of the sulfur concentrate slurry. Here, when the flocculation solution reacts with the slurry, it is concentrated by gravity sedimentation into a bottom slurry with a high solids content (e.g., 45% to 55%), while the top of the concentration tank 1 becomes the clarified liquid. The clarified liquid enters the overflow box 12 through the overflow port 15, and then the clarified liquid in the overflow box 12 is pumped out, thereby preventing the clarified liquid from overflowing from the concentration tank 1 and affecting the surrounding environment.

[0055] In this embodiment, several fixing rods 16 are welded around the central feed cylinder 11. Adjacent fixing rods 16 intersect and wrap around the central feed cylinder 11. The middle part of the fixing rod 16 is welded to the side part of the central feed cylinder 11, and the two ends of the fixing rod 16 are respectively welded to the two sides of the top of the concentration tank 1.

[0056] Tree root fixing rods 16 are arranged in a cross shape and wrap around the central feed cylinder 11. The two ends of the fixing rods 16 are welded to the two sides of the top of the concentration tank 1, and the side of the central feed cylinder 11 is welded to the fixing rods 16, thereby stabilizing the central position of the central feed cylinder 11.

[0057] Compared to existing technologies, this embodiment changes the way slurry and flocculant are mixed. It utilizes the impact force of the flocculation solution and the shear force generated by the flow direction of the flocculation solution and the flow direction of the slurry to quickly and uniformly mix the flocculation solution with the slurry without power, reducing energy supply. It also allows the slurry and flocculation solution to be fully mixed in the absence of designed stirring settings, while maintaining the structure of the flocculant in the flocculation solution and improving the flocculation effect of the slurry.

[0058] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An improved thickening device for sulfur concentrate, characterized in that, include: A thickening tank, the bottom of which is horizontally positioned, is connected to a collection hopper at the bottom of which has a discharge port for discharging high-concentration slurry. The feeding structure is located at the top of the thickening tank and has a central feed cylinder located in the middle of the thickening tank. The feeding structure is configured to generate shear force between the flow direction of the flocculation solution and the flow direction of the slurry, and to allow the flocculation solution and the slurry to flow synchronously toward the central feed cylinder and flow downward into the collection hopper through the central feed cylinder to obtain a high-concentration slurry. The feeding structure includes a feeding channel located at the top of the concentration tank. The discharge position of the feeding channel faces the opening of the central feed cylinder. The feeding channel is used to transport slurry into the central feed cylinder. An injection pipe is installed at the inlet position of the feeding channel, and the opening of the injection pipe faces into the feeding channel.

2. The improved thickening device for sulfur concentrate according to claim 1, characterized in that: The bottom of the concentration tank is fixed with a support frame, and the collection hopper is located in the support frame. The support frame includes a connecting ring welded to the bottom of the concentration tank. Several support columns are welded to the bottom of the connecting ring and are evenly distributed along the circumference. Each support column has an inclined connecting rod between it and the collection hopper. The two ends of the connecting rod are welded to the support column and the collection hopper, respectively.

3. An improved thickening device for sulfur concentrate according to claim 2, characterized in that: The outer side of the connecting ring is provided with an inwardly recessed groove along its circumference. Several reinforcing plates with a triangular structure are welded into the groove along the circumference of the connecting ring. At least two reinforcing plates are located at the support column at the bottom of the connecting ring.

4. An improved thickening device for sulfur concentrate according to claim 2, characterized in that: Each adjacent support column has an "X"-shaped reinforcing rib.

5. An improved thickening device for sulfur concentrate according to claim 2, characterized in that: The outer surface of the concentration tank is evenly welded with several layers of reinforcing rings along its height direction, and several hanging lugs are evenly distributed around the circumference of the reinforcing ring located at the top of the concentration tank.

6. An improved thickening device for sulfur concentrate according to claim 1, characterized in that: The feeding structure also includes several overflow boxes set on the top of the thickening tank. The several overflow boxes are evenly arranged along the circumference of the thickening tank. The overflow boxes have overflow ports on the side facing the central feed cylinder. The overflow ports are used to collect the clarified liquid from the solid-liquid separation of the slurry.

7. An improved thickening device for sulfur concentrate according to claim 1, characterized in that: Several fixing rods are welded around the central feed cylinder. Adjacent fixing rods intersect and wrap around the central feed cylinder. The middle part of the fixing rod is welded to the side of the central feed cylinder, and the two ends of the fixing rod are welded to the two sides of the top of the concentration tank.

8. An improved thickening device for sulfur concentrate according to claim 1, characterized in that: A filter screen is installed inside the discharge port.

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