Self-air-suction flotation machine impeller and self-suction flotation machine

Abstract

The invention discloses a self-air-suction flotation machine impeller and a self-air-suction flotation machine, the self-air-suction flotation machine impeller is used for the self-air-suction flotation machine and comprises a center hub(9)and a plurality of blades(2), and the blades(2)are evenly distributed and fixed to the outer cylindrical surface of the center hub(9)in the circumferential direction and are parallel to the center hub(9)in the axial direction. The blades(2)are provided with functional parameter influencing parts for adjusting functional parameters of the blades; the invention provides a self-suction flotation machine impeller design method based on blade area influence analysis of each area. The air suction capacity, the pumping capacity and the energy consumption of theflotation machine are adjusted, and under the constraint condition that the linear speed of the impeller is certain, the problems that the self-air-suction flotation machine cannot guarantee that other properties are basically unchanged, and the air suction capacity and the circulation capacity are independently adjusted or the equipment operation energy consumption is controlled can be solved. The problem of coarse particle deposition of the self-suction flotation machine, especially a large self-suction flotation machine can be effectively solved, and meanwhile the stirring and mixing effect of mineral particles is improved. And the air suction amount is increased, and the ore pulp circulation amount is increased, so that the collision probability of mineral particles and bubbles is increased, and the sorting performance is improved. And meanwhile, the requirement for large-air-suction-capacity mineral separation can be met.

Description

technical field [0001] The invention relates to the technical field of mechanical structures, in particular to an impeller of a self-suction flotation machine and a self-suction flotation machine. Background technique [0002] The flotation machine is the main equipment for mineral flotation and separation. In the flotation machine, the ore particles in the slurry are evenly suspended and dispersed by the agitation of the impeller, and the bubbles are evenly dispersed while promoting the formation of tiny air bubbles in the air, so that the useful minerals Adhere to the surface of air bubbles to achieve useful mineral enrichment. Flotation machines are mainly divided into two categories: inflatable flotation machines and self-suction flotation machines. The air-filled flotation machine sends air into the flotation machine through the blower, while the self-suction flotation machine provides the air required for flotation and separation by the air entrainment capacity of the...

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Problems solved by technology

[0007] Second, the inflatable flotation machine can generally reach 1.0m 3 / m 2 The air capacity above min, generally the existing large self-absorbing flotation machine can only reach 0.7m 3 / m 2 Min or so, it is difficult to improve the suction capacity, and it cannot meet the needs of large volume to better select other minerals

[0008] Third, the power consumption of a self-suction flotation machine is larger than that of an inflatable flotation machine. Simply increasing the diameter or speed of the impeller to improve the suction capacity and circulation capacity will lead to increased energy consumption of the equipment and increased wear of the impeller. Wait

Since the self-suction flotation machine impeller has the functions of air entrainment and slurry stirring, the air suction capacity, circulation capacity and power consumption of conventional impellers change together regardless of the diameter or rotational speed, and it is difficult to design and optimize according to a single goal. For example, it is difficult to realize that only improving the suction capacity while keeping the cycle capacity and power consumption basically unchanged

On the other hand, due to the particularity of the flotation process, to achieve the collision and adhesion of mineral particles and air bubbles, the impeller stirring line speed must be maintained at 6-8m / s in order to create a suitable dynamic environment, which limits the self-suction flotation process. The change of machine speed and diameter

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