A new type of aerated stirring leaching tank

Abstract

The utility model relates to a novel aerated stirring leaching tank, including a stirring shaft vertically arranged in the leaching tank body, the stirring shaft is hollow, and a plurality of groups of two-by-two symmetrically arranged aeration pipes are connected around the stirring shaft and extend to the bottom of the stirring blade, and a gas one-way valve is also installed at the bottom of the aeration pipe. The utility model changes the existing peripheral fixed aeration into a rotary aeration device, which rotates while inflating, and has better gas dispersion effect and sediment dispersion effect. At the same time, with the stirring device and the newly added rake rod, on the one hand, the aeration bubbles are cut to make the bubbles diffuse more evenly, ensuring that the dissolved oxygen in each area of ​​the tank body is sufficient, and on the other hand, the ore pulp and gold-loaded carbon precipitated at the bottom are dispersed and flowed, and under the dual effects of aeration and stirring, the ore pulp and gold-loaded carbon float up to participate in leaching, so that the added activated carbon is fully dispersed and adsorbed in the process without sinking, thereby greatly improving the gold and silver leaching adsorption index, improving the gold and silver leaching effect, and increasing the gold and silver recovery rate.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrometallurgy, in particular to a novel aerated stirring leaching tank. Background Art

[0002] The double-impeller leaching stirring tank is a common equipment for hydrometallurgical leaching operations. The current aeration methods for leaching stirring tanks are: hollow shaft aeration, peripheral aeration, and a combination of the two aeration methods. The peripheral aeration adopted by our company is to set 2-3 aeration points around the tank or to lead the aeration pipe to the bottom of the lower stirring blade (such as Figure 3 Figure 4 As shown in the figure, there are problems such as uneven aeration during use, insufficient dissolved oxygen in local areas affecting the gold and silver leaching rate, and failure of gold-carrying carbon deposition, which affect the gold and silver leaching effect. Utility Model Content

[0003] The utility model provides a novel aerated stirring leaching tank.

[0004] The specific technical scheme of the utility model is: a novel aerated stirring leaching tank, including a stirring shaft vertically arranged in the leaching tank body, the stirring shaft is hollow, and a plurality of groups of symmetrically arranged aeration pipes are connected around the stirring shaft and extend to the bottom of the stirring lower blades, and a gas one-way valve is also installed at the bottom of the aeration pipe.

[0005] Further, preferably, a rake rod is connected between every two symmetrically arranged inflation tubes, and the centers of the rake rods are cross-connected.

[0006] Further, preferably, the rake rod is provided with rake teeth.

[0007] Furthermore, preferably, a rotary joint is installed on the top of the stirring shaft, and gas is transmitted to the stirring shaft that rotates 360 degrees through the rotary joint.

[0008] Furthermore, preferably, a fixed bracket is connected between the inflation tube and the stirring shaft.

[0009] Further, preferably, one end of the fixed bracket is connected to the stirring shaft between the upper stirring blade and the lower stirring blade, and the other end is connected to the inflation tube.

[0010] The beneficial effects of the utility model are as follows: the utility model changes the existing peripheral fixed aeration into a rotary aeration device, which rotates while inflating, and has better gas dispersion effect and sediment breaking-up effect. At the same time, the stirring device and the newly added rake rod are used to cut the bubbles on the one hand to make the bubbles diffuse more evenly and ensure that the dissolved oxygen in each area of ​​the tank is sufficient. On the other hand, the ore pulp and gold-loaded carbon precipitated at the bottom are broken up and flowed. Under the dual effects of aeration and stirring, the ore pulp and gold-loaded carbon float up to participate in leaching, so that the added activated carbon is fully dispersed and adsorbed in the process without sinking in the tank, thereby greatly improving the gold and silver leaching adsorption index, improving the gold and silver leaching effect, and increasing the gold and silver recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The internal structure diagram of a novel aerated stirring leaching tank provided with a group of symmetrical aeration pipes in an embodiment;

[0012] Figure 2 The schematic diagram of the internal structure of a novel aerated stirring leaching tank provided with two sets of symmetrical aeration pipes in an embodiment;

[0013] Figure 3 A structural diagram of an aerated stirring leaching tank with multiple aeration points;

[0014] Figure 4 The structural diagram of the aerated stirring leaching tank with multiple aeration pipes is shown;

[0015] In the figure: 1-leaching tank body, 2-stirring shaft seat, 3-stirring shaft, 4-stirring upper blade, 5-stirring lower blade, 6-rotating joint, 7-inflating pipe, 8-rake rod, 9-rake teeth, 10-gas one-way valve, 11-fixed bracket, 12-gas storage tank, 13-sediment. DETAILED DESCRIPTION

[0016] In order to make the technical problems and technical solutions solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] like Figure 1 Figure 2 As shown, a novel aerated stirring leaching tank includes a leaching tank body 1, a stirring shaft 3 is vertically arranged in the leaching tank body 1, the stirring shaft 3 is fixed in the leaching tank body 1 through a stirring shaft seat 2, the stirring shaft 3 is hollow, and a plurality of groups of symmetrically arranged aeration pipes 7 are connected around the aeration shaft 3 and extend to the bottom of the stirring blade 5, and a gas check valve 10 is also installed at the bottom of the aeration pipe 7. The current peripheral fixed aeration is changed to a rotary aeration, which rotates while inflating, and the gas diffusion effect is better. The aeration pipe extends to a position close to the bottom of the tank body, and the gas impact is also conducive to breaking up the deposited ore pulp and gold-loaded carbon into the leaching process.

[0020] Install a gas check valve, and after the gas is introduced, the pneumatic force pushes the valve core open and conducts. When the pneumatic force is less than the elastic force of the check valve return spring, the valve is closed. This allows the valve to be opened and closed flexibly according to the needs of use, and can also prevent the slurry in the leaching tank from entering the inflation pipe.

[0021] At the same time, a rake rod 8 is connected between every two symmetrically arranged gas-filled pipes 7, and the centers of the multiple rake rods 8 are cross-connected. The rake rod 8 can be arranged above or below the gas check valve 10. The rake rod 8 rotates with the stirring device to break up the slurry and gold-loaded carbon precipitated at the bottom and make them flow, thereby reducing the sediment in the tank, and in cooperation with the stirring device, it can cut the bubbles that rush in, which is more conducive to the uniform dispersion of the bubbles.

[0022] Working principle: Compressed air is introduced into the hollow stirring shaft 3, and the gas will enter the bottom of the leaching tank body 1 along the inflation pipe 7. The inflation pipe 7 rotates and inflates as the stirring shaft 3 rotates in the tank body, and the gas is diffused in the tank body with the stirring of the stirring blades. At the same time, the rake rod 8 connected to the bottom of the inflation pipe 7 also rotates with the stirring device. The rake rod 8 and the stirring device cut the bubbles together to make the bubbles diffuse more evenly, ensuring that there is sufficient dissolved oxygen in each area of ​​the tank body; in addition, the precipitated slurry and gold-loaded carbon at the bottom are broken up and flowed. Under the dual effects of inflation and stirring, the slurry and gold-loaded carbon float up to participate in leaching, so that the added activated carbon is fully dispersed and adsorbed in the process without sinking, thereby greatly improving the gold and silver leaching adsorption index, improving the gold and silver leaching effect, and increasing the gold and silver recovery rate.

[0023] Further preferably, the gas can be introduced into the stirring shaft 3 by installing a rotating joint 6 on the top of the hollow stirring shaft 3. The rotating joint 6 serves as a pipeline connecting device. The connected pipelines can rotate relative to each other and can be used to transmit gas, liquid, oil and other media with a compact design structure. Therefore, the rotating joint 6 can ensure that the stirring shaft can rotate 360° while transmitting gas to it.

[0024] Further preferably, rake teeth 9 are provided on the rake bar 8. The rake bar 8 is made of solid wear-resistant material, and the rake teeth 9 are evenly distributed on the surface of the rake bar 8, which has a better effect of breaking up the deposited carbon and ore pulp at the bottom of the tank.

[0025] Further preferably, a fixed bracket 11 is connected between the inflation tube 7 and the stirring shaft 2, and the fixed bracket 11 is made of a hollow thick wear-resistant material, and the fixed bracket 11 is arranged according to the principle of stabilizing the inflation tube 7. According to the structure of the stirring device, one end of the fixed bracket 11 is connected to the stirring shaft 3 between the stirring upper blade 4 and the stirring lower blade 5, and the other end is connected to the inflation tube 7.

[0026] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above, and any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel aerated stirring leaching tank, comprising a stirring shaft (3) vertically arranged in a leaching tank body (1), characterized in that: The stirring shaft (3) is hollow, and is connected to the stirring shaft (3) by a plurality of groups of symmetrically arranged air filling pipes (7) extending to below the stirring lower blade (5), and a gas one-way valve (10) is also installed at the bottom of the air filling pipe (7).

2. According to the novel aerated stirring leaching tank described in claim 1, it is characterized in that: A rake rod (8) is connected between every two symmetrically arranged inflation tubes (7), and the centers of the rake rods (8) are cross-connected.

3. According to the novel aerated stirring leaching tank of claim 2, it is characterized in that: The rake rod (8) is provided with rake teeth (9).

4. The novel aerated stirring leaching tank according to claim 1 is characterized in that: A rotary joint (6) is installed on the top of the stirring shaft (3), and gas is transmitted to the stirring shaft (3) that rotates 360 degrees through the rotary joint (6).

5. The novel aerated stirring leaching tank according to claim 1 is characterized in that: A fixed bracket (11) is connected between the inflation tube (7) and the stirring shaft (3).

6. A novel aerated stirring leaching tank according to claim 5, characterized in that: One end of the fixed bracket (11) is connected to the stirring shaft (3) between the stirring upper blade (4) and the stirring lower blade (5), and the other end is connected to the inflation pipe (7).

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