What should you pay attention to when selecting a flotation machine? How to choose?

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Nowadays, the development of mining industry is getting faster and faster. Most of the mines in my country have low grade, fine particle size and complex mineral composition. Only through flotation can we obtain more ideal indicators, which also promotes the development of flotation machines. develop. So what should you pay attention to when selecting a flotation machine?

When selecting a flotation machine, its specifications, models, ore feeding properties (including particle size, density, mud content, flotability properties, etc.), the size of the mineral processing plant, the location of the mineral processing plant, the process of the mineral processing plant, etc. are closely related to the selection. Below we mainly introduce some considerations when selecting the type.

1. Determine the nature and separation requirements of the ore

When selecting a flotation machine, high-concentration flotation methods should be used for minerals with coarse particle size or high density. , to ensure the sedimentation speed of minerals and reduce the deposition of mineral particles. Therefore, it is appropriate to choose high-energy flotation machine equipment, such as mechanical agitation flotation machine (sf type or jjf type, etc.). Generally, the impeller speed of mechanical agitation flotation machine is fast and the stirring ability is strong. The features are as follows:

Sf flotation machine: Its impeller has backward-inclined double-sided blades. It can realize double circulation of slurry in the tank; the gap between the impeller and the cover plate is large, the air suction volume is large; the impeller peripheral speed is low, and the wearing parts have a long life.

Jjf flotation machine: Its blade area and impeller height are both large, and the installation depth is shallow, which can not only ensure strong enough stirring power, but also self-prime enough air. (can be adjusted between 0.1-1m³/㎡.min), the impeller rotates slowly (line speed is about 6.6m/s), has a small diameter, low rotation speed, low energy consumption, and a large gap with the stator, so it can extend the service life of the stator and impeller. .

Note: If the mineral processing mineral contains a high mud content, the mud will enter the foam, causing the concentration of the product in the tank to If it rises, it will not only reduce the flotation efficiency, but also cause problems such as tank blockage and shutdown of the flotation machine. Therefore, mechanical stirring flotation machines are also suitable for minerals with high mud content.

2. Determine the specifications of the flotation machine according to the flow conditions

In the flotation process, the processing requirements of each tank of the designed flotation machine may be different. Therefore, each operation The number of flotation machines will vary and require scientific and reasonable customization. Generally, there will be no less than two tanks for the selection operation, and no less than 4 to 6 tanks for the flotation machine in the rough selection and sweeping operations. Flotation machines suitable for roughing and sweeping include kyf type, jjf type, sf type, etc. Flotation machines suitable for selection include xcf type, xjk type, etc.

Note: The selection operation is mainly to improve the grade of the concentrate. The flotation foam layer should be thinner and is gangue. To create favorable conditions for better separation, a flotation machine with a larger aeration volume is not required. Therefore, the flotation machine for fine selection operations should be different from the flotation machines for coarse and sweeping operations.

3. Determine the materials of the parts according to the properties of the materials

During the flotation process of the flotation machine, the impeller, cover and other parts will suffer a certain degree of wear during operation. , will affect its stirring ability and aeration. Therefore, when selecting, the lining material of the impeller cover of the flotation machine should be selected according to the mineral properties. Generally, wear-resistant rubber linings are chosen, and their special production The advanced technology makes the lining plate more wear-resistant and corrosion-resistant, and its service life is more than 2 times longer than that of conventional lining plates, ensuring the service life of the equipment.

The above issues that need to be paid attention to when selecting a flotation machine, then how to choose in the end, it is recommended to conduct a mineral processing test, and through test analysis, Scientifically and rationally customize the suitable flotation machine type, model specifications and suitable flotation machine linings. Do not blindly follow them, because there is no identical mine in the world.