A crude gold purification pre-treatment apparatus

Abstract

The utility model discloses a kind of crude gold purification pretreatment equipment, including liquid extraction unit, centrifugal filtration unit and centrifugal collision unit. The reaction kettle is filtered out and occurs multiple collisions with first collision ring plate and second collision ring plate by filtering and separating gold particles in mixed solution while mixing and stirring on one side, its particles are no longer wrapped by fluid, impact inner wall instantaneously directly withstands "point impact force", shear force concentrates on particle surface, liquid film is "torn type stripping, mixed solution can directly, unobstructed contact to the surface of gold particles after collision, even Se, Te in aperture, greatly improve the removal rate of Se, Te.

Description

Technical Field

[0001] This utility model relates to the field of crude gold purification technology, and in particular to a crude gold purification pretreatment device. Background Technology

[0002] For crude gold containing Se and Te, before wet refining, our company will crush the crude gold into 5 to 10 mm particles and feed them into a reaction vessel. We will then add a reagent (a mixture of 10% dilute hydrochloric acid, 5% sodium sulfite, and distilled water in a volume ratio of 3:1:6) and soak and stir it to remove Se and Te.

[0003] During processing, the gold particles are encapsulated by a liquid film (which contains not only unreacted reagents but also a large amount of already generated Se and Te soluble products Na2SeSO3 and Na2TeSO3), preventing the Se and Te in the gold particles from continuing to contact the reagents and affecting the removal efficiency of Se and Te from the crude gold. Therefore, this application provides a crude gold purification pretreatment device to meet the requirements. Utility Model Content

[0004] The purpose of this application is to provide a crude gold purification pretreatment device to solve the technical problem of low Se and Te removal efficiency caused by gold particles being coated with a liquid film in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution: a crude gold purification pretreatment device, comprising a vessel with a stirring system, and further comprising a liquid extraction unit, a centrifugal filtration unit, and a centrifugal collision unit;

[0006] The centrifugal filtration unit includes a collision cover fixedly installed in the inner cavity of the vessel, an outer rotating shaft driven by a motor and rotatably installed in the inner cavity of the vessel, multiple sets of filter screens arranged in a funnel shape, and a receiving cylinder for receiving the filtrate.

[0007] Each of the multiple sets of filter screens is covered with filter gauze, and the multiple sets of filter screens are arranged in a vertical sequence.

[0008] The receiving cylinder is rotatably mounted on the outer wall of the outer rotating shaft via a sealed bearing. The receiving cylinder is fixedly connected to the collision cover via a connecting rod. The drain pipe on the receiving cylinder passes through the collision cover.

[0009] The inner cavity of the collision shield is provided with a first collision ring plate and multiple sets of second collision ring plates arranged sequentially from top to bottom. The inner ring surfaces of the first collision ring plate and multiple sets of second collision ring plates are all set as inclined surfaces. The two sets of second collision ring plates located at the bottom are respectively installed on the corresponding funnel-shaped material collecting cylinders. The material collecting cylinders are located below the corresponding receiving cylinders.

[0010] The centrifugal filtration unit includes an inner rotating shaft rotatably disposed in the inner cavity of the outer rotating shaft, and the inner rotating shaft is driven by the motor. The lower end of the inner rotating shaft is connected to the centrifugal disc, and the centrifugal disc is located below the lowest collection cylinder.

[0011] The liquid extraction unit includes a liquid extraction pump installed on the vessel body, with the inlet end of the liquid extraction pump connected to a liquid extraction pipe, the lower end of the liquid extraction pipe inserted into the mixed liquid, the outlet end of the liquid extraction pump connected to an outlet pipe, and the outlet of the outlet pipe located above the filter gauze.

[0012] In a preferred embodiment of this invention, the angle between the inner annular surface of the filter screen and the horizontal plane is set to between 10° and 15°.

[0013] In a preferred embodiment of this invention, the outlet of the liquid outlet pipe is inclined outward.

[0014] In a preferred embodiment of this invention, the first collision ring plate and the multiple sets of second collision ring plates are densely covered with tiny spikes.

[0015] In a preferred embodiment of this invention, a vibrator is provided on the outer wall of the collision shield.

[0016] In summary, the technical effects and advantages of this utility model are as follows:

[0017] 1. The present invention has a reasonable structure. The reaction vessel filters and separates gold particles in the mixture while mixing and stirring, and the particles collide with the first and second collision ring plates multiple times. The particles are no longer wrapped by the fluid. They directly bear the "point impact force" at the moment of impact with the inner wall. The shear force is concentrated on the particle surface, and the liquid film is "torn off". The mixture can directly and unobstructedly contact the surface of the gold particles after the collision, and even the Se and Te in the pores, which greatly improves the removal rate of Se and Te.

[0018] 2. In this utility model, the first collision ring plate and multiple sets of second collision ring plates are densely covered with tiny spikes. The tiny spikes form "point contact", and the impact force is concentrated at the tip of the spikes, which can directly destroy the adhesion between the liquid film and the surface of the gold particles, and even penetrate the deep liquid film in the pores, thereby further improving the film removal effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a frontal cross-sectional view of the present invention.

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 3 for Figure 1 Enlarged structural diagram at point B.

[0023] In the diagram: 1. Kettle body; 2. Stirring system; 3. Motor; 4. Inner rotating shaft; 5. Centrifuge disc; 6. Liquid pump; 7. Liquid suction pipe; 8. Outer rotating shaft; 9. Collision shield; 901. First collision ring plate; 902. Receiving cylinder; 903. Drain pipe; 904. Collecting cylinder; 905. Second collision ring plate; 10. Liquid outlet pipe; 11. Micro-spiks; 12. Filter screen; 13. Filter gauze. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example: Reference Figure 1-3 The crude gold purification pretreatment equipment shown includes a vessel 1 with a stirring system 2, and also includes a liquid extraction unit, a centrifugal filtration unit and a centrifugal collision unit.

[0026] The centrifugal filtration unit includes a collision cover 9 fixedly installed in the inner cavity of the vessel body 1, an outer rotating shaft 8 driven by a motor 3 and rotatably installed in the inner cavity of the vessel body 1, multiple sets of filter screens 12 arranged in a funnel shape, and a receiving cylinder 902 for receiving filtrate.

[0027] Each of the multiple filter screens 12 is covered with filter gauze 13, and the multiple filter screens 12 are arranged in a vertical sequence.

[0028] The receiving cylinder 902 is rotatably mounted on the outer wall of the outer rotating shaft 8 via a sealed bearing. The receiving cylinder 902 is fixedly connected to the collision cover 9 via a connecting rod. The drain pipe 903 on the receiving cylinder 902 passes through the collision cover 9.

[0029] The inner cavity of the collision cover 9 is provided with a first collision ring plate 901 and multiple second collision ring plates 905 arranged sequentially from top to bottom. The inner ring surfaces of the first collision ring plate 901 and multiple second collision ring plates 905 are all set as inclined surfaces. The two sets of second collision ring plates 905 located at the bottom are respectively installed on the corresponding funnel-shaped material collecting cylinder 904. The material collecting cylinder 904 is located below the corresponding material receiving cylinder 902.

[0030] The centrifugal filtration unit includes an inner rotating shaft 4 rotatably disposed in the inner cavity of the outer rotating shaft 8, and the inner rotating shaft 4 is driven by a motor 3. The lower end of the inner rotating shaft 4 is connected to the centrifugal disc 5, and the centrifugal disc 5 is located below the lowermost collection cylinder 904.

[0031] The liquid extraction unit includes a liquid extraction pump 6 installed on the vessel body 1, and the inlet end of the liquid extraction pump 6 is connected to the liquid extraction pipe 7. The lower end of the liquid extraction pipe 7 is inserted into the mixed liquid. The outlet end of the liquid extraction pump 6 is connected to the outlet pipe 10. The outlet of the outlet pipe 10 is located above the filter gauze 13.

[0032] When in use, while the stirring system 2 is used to stir the internal materials, the motor 3 is controlled to work. The motor 3 drives the outer rotating shaft 8 and the inner rotating shaft 4 to rotate rapidly, that is, the filter screen 12 rotates rapidly.

[0033] At this time, the liquid containing metal particles in the vessel 1 can be pumped by the pump 6 to the rotating filter cloth 13 to avoid the situation where the solid-liquid separation cannot be fast or the blockage is easily caused by filtration in a single part. The inner ring surface of the filter screen is inclined. When it rotates, the water droplets on the gold particles are subjected to the action of lateral centrifugal force and enter the receiving cylinder 902 through the filter cloth 13. Since the gold particles cannot pass through the filter cloth 13, they can move upward along the inclined surface of the filter cloth 13 under the action of centrifugal force and collide with the inner inclined surface of the first collision ring plate 901. The gold particles move downward through the guiding action of its inner inclined surface and finally enter the centrifugal disc 5 after being guided by the inner inclined surface of the collecting cylinder 904. They are thrown out by the action of centrifugal force and collide with the second collision ring plate 905. The gold particles after the collision re-enter the mixture for stirring. This process is repeated, with stirring, liquid pumping, filtration and centrifugal collision.

[0034] This reactor filters and separates gold particles from the mixture while simultaneously mixing and stirring. These particles then collide multiple times with the first collision ring plate 901 and the second collision ring plate 905. The particles are no longer enveloped by the fluid and directly experience "point impact force" upon impact with the inner wall (rather than the "surface impact force" when enveloped by the fluid). The shear force is concentrated on the particle surface, and the liquid film is "torn apart." When the liquid film detaches, it carries these products into the mixture. The mixture can directly and unobstructedly contact the surface of the gold particles after the collision, and even Se and Te in the pores, greatly improving the removal rate of Se and Te.

[0035] It should be noted that: First, different sizes of gears can be selected for meshing transmission, so that the outer rotating shaft 8 and the inner rotating shaft 4 are driven by a set of motors 3 to rotate at different speeds. Generally, the rotation speed of the inner rotating shaft 4 is greater than that of the outer rotating shaft 8. Second, the filtrate enters the receiving cylinder 902 and flows back to the vessel body 1 through the drain pipe 903. Third, the first collision of gold particles can break up the agglomerated particles, which is beneficial for the subsequent collision of individual particles with the second collision ring plate 905 through the centrifugal disc 5, thereby improving the liquid film peeling effect.

[0036] As a preferred embodiment of this example, Figure 1 As shown, the angle between the inner ring surface of the filter screen 12 and the horizontal plane is set to between 10° and 15°.

[0037] The included angle is set between 10° and 15°, which ensures good solid-liquid separation while avoiding the accumulation of particles on the filter gauze 13.

[0038] As a preferred embodiment of this example, Figure 3 As shown, the outlet of the liquid outlet pipe 10 is inclined outward.

[0039] This allows the mixture to disperse on the filter gauze 13 and provides the gold particles with "initial kinetic energy upward along the inclined plane". This energy, combined with the centrifugal force generated by the rotation of the filter screen 13, ensures that the particles quickly enter the process of "moving upward - colliding with the first collision ring plate 901", thus avoiding the accumulation of particles on the filter gauze 12 due to insufficient kinetic energy.

[0040] As a preferred embodiment of this example, Figure 2 As shown, the first collision ring plate 901 and multiple sets of second collision ring plates 905 are densely covered with tiny spikes.

[0041] The tiny spikes form a "point contact," concentrating the impact force at the spike tip, which can directly destroy the adhesion between the liquid film and the surface of the gold particles, and even penetrate the deep liquid film in the pores, further improving the film removal effect.

[0042] As a preferred embodiment of this invention, a vibrator is provided on the outer wall of the collision shield 9.

[0043] The vibrator can drive the collision cover 9 to vibrate, which helps to shake off the gold particles adhering to the inner wall of the collision cover 9.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crude gold refining pretreatment device, comprising a vessel (1) with a stirring system (2), characterized in that: It also includes a liquid extraction unit, a centrifugal filtration unit, and a centrifugal collision unit; The centrifugal filtration unit includes a collision cover (9) fixedly installed in the inner cavity of the vessel body (1), an outer rotating shaft (8) driven by a motor (3) and rotatably installed in the inner cavity of the vessel body (1), multiple sets of filter screens (12) arranged in a funnel shape, and a receiving cylinder (902) for receiving filtrate. Each of the multiple sets of filter screens (12) is covered with filter gauze (13), and the multiple sets of filter screens (12) are arranged in a vertical sequence. The receiving cylinder (902) is rotatably mounted on the outer wall of the outer rotating shaft (8) via a sealed bearing. The receiving cylinder (902) is fixedly connected to the collision cover (9) via a connecting rod. The drain pipe (903) on the receiving cylinder (902) passes through the collision cover (9). The inner cavity of the collision shield (9) is provided with a first collision ring plate (901) and multiple second collision ring plates (905) arranged from top to bottom. The inner ring surfaces of the first collision ring plate (901) and multiple second collision ring plates (905) are all set as inclined surfaces. The two sets of second collision ring plates (905) located at the bottom are respectively installed on the corresponding funnel-shaped material collection cylinder (904). The material collection cylinder (904) is located below the corresponding material receiving cylinder (902). The centrifugal filtration unit includes an inner rotating shaft (4) which is rotatably disposed in the inner cavity of the outer rotating shaft (8), and the inner rotating shaft (4) is driven by the motor (3). The lower end of the inner rotating shaft (4) is connected to the centrifugal disc (5), and the centrifugal disc (5) is located below the lowest collection cylinder (904). The liquid extraction unit includes a liquid extraction pump (6) installed on the vessel body (1), and the inlet end of the liquid extraction pump (6) is connected to the liquid extraction pipe (7). The lower end of the liquid extraction pipe (7) is inserted into the mixed liquid. The outlet end of the liquid extraction pump (6) is connected to the outlet pipe (10). The outlet of the outlet pipe (10) is located above the filter gauze (13).

2. The crude gold purification pretreatment equipment according to claim 1, characterized in that: The angle between the inner ring surface of the filter screen (12) and the horizontal plane is set to between 10° and 15°.

3. The crude gold purification pretreatment equipment according to claim 1, characterized in that: The outlet of the liquid outlet pipe (10) is inclined outward.

4. The crude gold purification pretreatment equipment according to claim 1, characterized in that: The first collision ring plate (901) and multiple sets of second collision ring plates (905) are densely covered with tiny spikes (11).

5. The crude gold purification pretreatment equipment according to claim 1, characterized in that: A vibrator is provided on the outer wall of the collision shield (9).

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