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How to Improve the Flotation Velocity

Author: HXJQTime: 11/26/2012 6:22:40 PM

Flotation machine is suitable for the sorting of non-ferrous metal and ferrous metal as well as the sorting of non-metal such as: coal fluorite and talc. Driven by the motor and v-belt, the impeller of the mechanical flotation machine rotates, which will generate the centrifugal effect, forming the negative pressure. On the one hand, the adequate air will be sucked into to mix with the slurry, on the one hand, it will stir the slurry to mix with the reagents and refine the foam to make the minerals adhere to the bubble.  The flotation rate of the flotation machine means the required flotation time when the flotation machine achieves a certain recovery rate (or the unit production capacity of the flotation machine). To increase the recovery rate and shorten the time of flotation is to improve the flotation rate. The following is the major measures to improve the flotation rate:

1, the reasonable adjustment of the prescriptions and the amount of the foaming agent should be paid particular attention to. In general, a slight increase of the foaming agent will promote the flotation speed. It must be noted that the excessive foaming agent will reduce the selectivity. Therefore, in the case of selection and that the dosage of the collectors is large; the operator should pay more attention to the amount of the foaming agent. It should be not excessive.

2, the pulp should go through the flotation cell as soon as possible. The slot in series is faster than the tank in parallel and it is also conducive to enhance the flotation rate. 

3, within the appropriate range, the operator should increase the impeller speed and reduce the trough depth so that the air gap between the impeller and a cover becomes narrow to promote the flotation rate.

4, to control the pulp density, which helps to get the maximum speed of the flotation.

5, the size of the groove must be appropriate. Generally, the slot size can not be too large. If it is too large, the slurry will stay too long in the groove, which will not only make the concentrate foam depleted, but also reduce the flotation rate.