Device for leaching organic silicon slag

Abstract

The utility model relates to the technical field of organic silicon slag, in particular to an organic silicon slag leaching device which comprises a tank body, a placing platform is arranged on the tank body, a stirrer used for stirring silicon slag is arranged on the placing platform, and a circulating pump used for circulating materials is arranged on the tank body. The tank body is provided with a first venturi tube for improving air flowing into the tank body, and the first venturi tube is provided with an air tube for introducing air into the tank body. Through the arrangement of the air pipe and the stirrer, air can smoothly enter the tank body and is fully mixed with copper in the reinforced silicon slag in the tank body, the copper oxidation speed can be accelerated, the leaching time is further shortened, through the arrangement of the circulating pump, sulfuric acid in the tank body can continuously and circularly leach the silicon slag, and the leaching efficiency is improved. The processes of filter pressing, transferring and the like after hydrolysis in the traditional process are omitted, and meanwhile, the use amount of labor and sulfuric acid is saved, so that environmental pollution is reduced, and the occupied field is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of organosilicon slag, in particular to an organosilicon slag leaching device. Background Art

[0002] In the production of alumina, after the crude liquid is desiliconized, the solution contains a large amount of impurities such as silicon slag and red mud, which cannot be directly decomposed. In order to make the product alumina meet the national standards, the crude liquid must be clarified and separated after desiliconization to make a pure and transparent sodium aluminate solution. When processing the desiliconized solution, leaf filters or filter presses are often used in industry to separate the silicon slag from the desiliconized solution.

[0003] In the prior art of organic silicon slag leaching technology, when copper in silicon slag reacts with oxygen, the oxidation rate of copper is generally low, which will affect the time of subsequent leaching. In addition, it is necessary to go through processes such as pressure filtration and reverse transportation by hydrolysis, which not only consumes a lot of manpower and sulfuric acid, but also increases the site occupation causing environmental pollution.

[0004] Therefore, we designed a device for leaching organic silicon slag. Utility Model Content

[0005] The utility model aims to solve the problem of low efficiency in the prior art and provides a device for leaching organic silicon slag.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for leaching organic silicon slag comprises a tank body, a placement platform is provided on the tank body, a stirrer for stirring silicon slag is provided on the placement platform, a circulation pump for circulating materials is provided on the tank body, a first venturi tube for increasing the flow of air into the tank body is provided on the tank body, and an air pipe for introducing air into the tank body is provided on the first venturi tube.

[0008] Preferably, the tank body is fixedly connected to the placement platform via a fastener, and a round hole is opened on the tank body.

[0009] Preferably, the mixer is provided with a stirring shaft, and the stirring shaft is matched with the circular hole, and the stirring shaft is provided with a plurality of stirring blades for improving the stirring effect.

[0010] Preferably, the circulation pump is connected to the tank body through a first connecting pipe, and the first connecting pipe is connected to the output end of the circulation pump, and a second connecting pipe is provided at the other end of the circulation pump.

[0011] Preferably, one end of the first venturi tube is connected to the second connecting tube through an auxiliary tube, and the first venturi tube is provided with a driving motor for pumping air.

[0012] Preferably, the first venturi tube is communicated with the tank body through the second venturi tube, and the air pipe is fixedly connected to the first venturi tube by welding and is communicated with.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model allows air to smoothly enter the tank body through the arrangement of the air pipe and the stirrer, and fully mixes with the copper in the reinforced silicon slag in the tank body, which can accelerate the oxidation speed of copper and thus shorten the leaching time.

[0015] 2. The utility model sets a circulating pump so that the sulfuric acid in the tank can be continuously circulated to leach the silicon slag, which not only saves the processes of filter pressing and transportation after hydrolysis in the traditional process, but also saves labor and the use of sulfuric acid, thereby reducing environmental pollution and saving site occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a device for leaching organic silicon slag proposed by the utility model;

[0017] Figure 2 A diagram of a device for leaching organic silicon slag proposed by the utility model;

[0018] Figure 3 A diagram of a device for leaching organic silicon slag proposed by the utility model;

[0019] Figure 4 This is a diagram of a device for leaching organic silicon slag proposed by the utility model.

[0020] In the figure: 1. tank body; 2. placement platform; 3. mixer; 4. circulation pump; 5. drive motor; 6. first venturi tube; 7. air pipe; 8. second venturi tube. DETAILED DESCRIPTION

[0021] Reference Figure 1-Figure 4 A device for leaching organic silicon slag includes a tank body 1. The tank body 1 is a storage tank used in the prior art for silicon slag leaching technology. The tank body 1 has a strong corrosion resistance effect to avoid damage to the tank body 1 during sulfuric acid leaching.

[0022] A placement platform 2 is provided on the tank body 1, and the placement platform 2 is mainly used to limit the tank body 1, so that the tank body 1 is restricted and can be arranged effectively and reasonably. The tank body 1 is fixedly connected to the placement platform 2 by fasteners. The fasteners are existing technology. The tank body 1 is clamped on the placement platform 2. A circular hole is opened on the tank body 1, and the circular hole is drilled later.

[0023] A stirrer 3 for stirring silicon slag is provided on the placement platform 2. The stirrer 3 is a stirring driving machine driven by an external power supply. A stirring shaft is provided on the stirrer 3. The stirring shaft is fixedly connected to the output end of the stirrer 3 so as to rotate. The stirring shaft is matched with the circular hole, and the diameter of the circular hole is the same as the diameter of the stirring shaft. The stirring shaft is provided with a plurality of stirring blades for improving the stirring effect. There are four stirring blades in total, and two groups are provided.

[0024] A circulation pump 4 for circulating materials is provided on the tank body 1. The circulation pump 4 is used to circulate sulfuric acid in the tank body 1 to improve the leaching of sulfuric acid on silicon slag. The circulation pump 4 is connected to the tank body 1 through a first connecting pipe. The low connecting tank 4 is used to suck out the sulfuric acid in the tank body 1, and the first connecting pipe is connected to the output end of the circulation pump 4. A second connecting pipe is provided at the other end of the circulation pump 4, and the second connecting pipe is used to draw out sulfuric acid.

[0025] The tank body 1 is provided with a first venturi tube 6 for increasing the flow of air into the tank body 1. The first venturi tube 6 is a prior art and mainly sucks air into the tank body 1 so that the copper in the silicon slag reacts with the oxygen in the air to increase the rate of copper leaching. One end of the first venturi tube 6 is connected to the second connecting tube through an auxiliary tube. The auxiliary tube is an auxiliary component. The first venturi tube 6 is provided with a driving motor 5 for pumping air. The driving motor 5 is used to extract air and discharge the air into the first venturi tube 6.

[0026] The first venturi tube 6 is provided with an air pipe 7 for introducing air into the tank body 1. The air pipe 7 is communicated with the air layer outside the tank body 1 to reduce contact with the air around the tank body 1, so that the oxygen content in the air is insufficient, thereby reducing the efficiency of copper leaching. The first venturi tube 6 is connected to the tank body 1 through the second venturi tube 8. The second venturi tube 8 is a prior art and is used to transfer air into the tank body 1. The air pipe 7 is fixedly connected to the first venturi tube 6 by welding. Welding can improve the stability of the air pipe 7 on the first venturi tube 6 and is connected.

[0027] The working principle of the utility model is as follows: organic silicon slag is directly transported to the leaching tank 1 for hydrolysis by nitrogen, sulfuric acid is added according to the amount of copper contained in the silicon slag after hydrolysis, and the liquid-to-solid ratio is 4:1. The circulation pump 4 is started for leaching, and the operation time is 12-24 hours. When the pH is 1.5-2.0, the leaching is completed, and a filter press is used to separate the solid and liquid, and the filtrate enters the stem extraction system, and the filter residue contains copper <0.5%.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for leaching organic silicon slag, comprising a tank body (1), characterized in that: The tank body (1) is provided with a placement platform (2), the placement platform (2) is provided with a stirrer (3) for stirring silicon slag, the tank body (1) is provided with a circulation pump (4) for circulating materials, the tank body (1) is provided with a first venturi tube (6) for increasing the flow of air into the tank body (1), and the first venturi tube (6) is provided with an air pipe (7) for introducing air into the tank body (1).

2. The device for leaching organic silicon slag according to claim 1, characterized in that: The tank body (1) is fixedly connected to the placement platform (2) via fasteners, and a circular hole is provided on the tank body (1).

3. The device for leaching organic silicon slag according to claim 2, characterized in that: The stirrer (3) is provided with a stirring shaft, and the stirring shaft is adapted to the circular hole. The stirring shaft is provided with a plurality of stirring blades for improving the stirring effect.

4. The device for leaching organic silicon slag according to claim 1, characterized in that: The circulation pump (4) is connected to the tank body (1) via a first connecting pipe, and the first connecting pipe is connected to an output end of the circulation pump (4), and a second connecting pipe is provided at the other end of the circulation pump (4).

5. The device for leaching organic silicon slag according to claim 4, characterized in that: One end of the first venturi tube (6) is connected to the second connecting tube via an auxiliary tube, and a driving motor (5) for pumping air is provided on the first venturi tube (6).

6. The device for leaching organic silicon slag according to claim 1, characterized in that: The first venturi tube (6) is connected to the tank body (1) via the second venturi tube (8), and the air pipe (7) is fixedly connected to the first venturi tube (6) by welding and is connected to the tank body (1).

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