Anti-corrosion flotation column suitable for chemical mineral separation

Abstract

The utility model discloses an anti-corrosion flotation column suitable for chemical beneficiation, which comprises an ore feeding box, an ore feeding pump and a flotation column body, a feeding bubble generator is arranged at the middle upper part of the flotation column body, a rotational flow ore feeder is arranged at the center in the flotation column body, the upper end of the rotational flow ore feeder is connected with the feeding bubble generator, and the lower end of the rotational flow ore feeder is connected with the flotation column body. An overflow opening and a tailing opening are formed in the upper portion and the bottom of the flotation column body respectively, and the inner walls of the feeding box, the feeding pump and the flotation column body are all subjected to anti-corrosion treatment. According to the anti-corrosion flotation column, the structure of an existing flotation column is optimized, the anti-corrosion flotation column which is more suitable for chemical agents to participate in mineral separation is provided, the failure rate is reduced, and meanwhile energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of flotation, and particularly relates to an anti-corrosion flotation column suitable for chemical ore dressing. Background Art

[0002] When ore dressing is carried out by a flotation column, in some cases, the operation is carried out under acidic or alkaline medium conditions. For example, the flotation of copper oxide ore. The pulp added with chemical agents for auxiliary ore dressing will corrode the ore dressing equipment. More importantly, the middlings recycling device of the existing flotation column has little effect on such chemical ore dressing, but greatly increases the failure rate and wastes energy in vain, resulting in an increase in the ore dressing cost. Summary of the Invention

[0003] The purpose of the utility model is to provide an anti-corrosion flotation column suitable for chemical ore dressing, so as to solve the problems of high failure rate and high cost when the existing flotation column is used for flotation by chemical ore dressing method.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] An anti-corrosion flotation column suitable for chemical ore dressing includes a feed box, a feed pump and a flotation column body. An inlet bubble generator is arranged in the upper middle part of the flotation column body. A cyclone feed device is arranged at the center inside the flotation column body. The upper end of the cyclone feed device is connected to the inlet bubble generator. An overflow port and a tailings port are respectively arranged at the upper part and the bottom of the flotation column body. The inner walls of the feed box, the feed pump and the flotation column body are all subjected to anti-corrosion treatment.

[0006] Further, the cyclone feed device is a hollow tubular spiral structure with the outlet at the bottom. The upper spiral diameter is one half of the diameter of the flotation column body, and the lower spiral diameter is one third of the diameter of the flotation column body.

[0007] Further, the cyclone feed device is made of stainless steel, coated with an anti-corrosion coating on the outside and lined with wear-resistant ceramics inside.

[0008] Further, the flotation column body is made of stainless steel, with a height of 4 - 5m and a diameter of 1 - 3m.

[0009] To sum up, due to adopting the above technical scheme, the beneficial effects of the utility model are as follows:

[0010] The set cyclone feed device replaces the middlings recycling structure of the existing flotation column, simplifies the structure without affecting the flotation effect, reduces the energy consumption and the failure rate at the same time, makes it more suitable for chemical ore dressing than the existing flotation column, and the anti-corrosion coating can also well prevent the corrosion of the flotation column body by acidic or alkaline pulp. Brief Description of the Drawings

[0011] Figure 1 is the overall structural schematic diagram of the utility model;

[0012] In the figure: 1 - feed box, 2 - feed pump, 3 - flotation column, 31 - overflow port, 32 - tailings port, 4 - feed bubble generator, 5 - cyclone feeder. Specific embodiments

[0013] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the following further details the present utility model in conjunction with the accompanying drawings and embodiments.

[0014] As Figure 1 shown, taking copper oxide ore as an example, first grind the copper oxide ore to 80% of minus 200 mesh, then add sulfuric acid with a dosage of 80 kg / t and stir, then add xanthate and No. 2 flotation oil, and finally inject the pulp into the feed box 1. The pulp is transported into the flotation column 3 through the feed pump 2. At the connection between the feed pipeline (not shown in the figure) and the flotation column 3, there is a feed foaming generator 4. When the pulp passes through, air can be inhaled in a jet flow manner to form fine bubbles.

[0015] After the pulp enters the flotation column 3, it will enter the cyclone feeder 5 along the tangential direction of the cyclone feeder 5. The cyclone feeder 5 is a hollow tubular spiral structure with the outlet at the bottom. Since the ore materials in the pulp of chemical beneficiation method have all been ground and screened, they are relatively uniform and fine. Therefore, when the pulp mixed with bubbles passes through the internal spiral pipeline of the cyclone feeder 5 at a high speed, due to the action of centrifugal force, the pulp will tend to move outward, while the bubbles will move inward. Through this process, the bubbles will fully contact the concentrate in the pulp and carry it, and the concentrate will thus be separated. When the separation process just ends, the pulp will be discharged from the outlet at the bottom of the cyclone feeder 5. At this time, the bubbles wrapped by the concentrate will float upward, while the heavier tailings will precipitate downward. The floated concentrate flows out from the overflow port 31 at the upper part of the flotation column 3, and the tailings are discharged from the tailings port 32 at the bottom of the flotation column 3.

[0016] At the same time, considering the equipment anti-corrosion requirements, the inner walls of the feed box 1, the feed pump 2, the flotation column 3, etc. are all coated with anti-corrosion coatings to cope with the acidic and alkaline pulp during various chemical beneficiations.

[0017] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-corrosion flotation column suitable for chemical ore dressing, comprising a feed box (1), a feed pump (2) and a flotation column body (3), characterized in that: An inlet bubble generator (4) is provided in the upper middle part of the flotation column body (3). A cyclone feeder (5) is provided at the center inside the flotation column body (3). The upper end of the cyclone feeder (5) is connected to the inlet bubble generator (4). An overflow port (31) and a tailings port (32) are respectively provided at the upper part and the bottom of the flotation column body (3). The feed box (1), the feed pump (2) and the inner wall of the flotation column body (3) are all subjected to anti-corrosion treatment.

2. The anti-corrosion flotation column suitable for chemical ore dressing according to claim 1, wherein: The cyclone feeder (5) is a hollow tubular spiral structure with the outlet at the bottom. The upper spiral diameter is one-half of the diameter of the flotation column body (3), and the lower spiral diameter is one-third of the diameter of the flotation column body (3).

3. The anti-corrosion flotation column suitable for chemical ore dressing according to claim 2, characterized in that: The cyclone feeder (5) is made of stainless steel, coated with an anti-corrosion coating on the outside and lined with wear-resistant ceramics.

4. An anti-corrosion flotation column suitable for chemical ore dressing according to claim 1, characterized in that: The flotation column body (3) is made of stainless steel, with a height of 4 - 5 m and a diameter of 1 - 3 m.

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