Flotation method and flotation system of whole-course open circuit floatation for concentrate slurry

Abstract

The invention relates to a flotation method and a flotation system of whole-course open circuit floatation for concentrate slurry. The whole-course open circuit floatation means that the concentrate slurry produced in any flotation tank no longer flows into a flotation system where the flotation tank in which the concentrate slurry is produced is arranged, the concentrate slurry flows into a postpositional flotation system in an irreversible flow manner (i.e. a complete single-way forward flow manner), and a choiceness process is finished in at least one postpositional flotation system. The flotation tank at least comprises a flotation tank provided with spiral rotors and / or an ultrasonic device. The concentrate slurry is slurry flowing out above the liquid level in the flotation tank in a mineralized bubble form. In the flotation process of the flotation method, the tail slurry produced in any flotation tank flows out of the flotation tank in which the tail slurry is produced in the irreversible flow manner and flows into the postpositional flotation system of the flotation system for sequentially scavenging until the tail slurry of the system is produced. The invention can overcome the defect of futile cycle flotation for target particles, the flotation time is greatly shortened, and medicine and energy consumption are significantly reduced.

Description

technical field [0001] The invention relates to a mineral flotation method and process, in particular to a flotation method and process for whole-process open-circuit flotation of concentrate pulp, and belongs to the technical field of flotation. Background technique [0002] The well-known flotation method is a flotation process in which the outflow ore pulp is fully closed. In this process, starting from the flotation cell that produces the final tailings slurry, the concentrate slurry produced by each stage of flotation cell must be closed-circuited to flow back to the front flotation cell for enrichment flotation step by step until the final stage of tailings slurry is produced. The final concentrate pulp is produced; starting from the flotation tank that produces the final concentrate pulp, the tailings slurry produced by each flotation tank must be returned to the flotation tank for scavenging in a closed circuit step by step until the output Final tailings slurry. ...

AI Technical Summary

Problems solved by technology

Obviously, there is the irrationality of invalid circulation flotation, which leads to the invalid extension of the flotation process, and the invalid increase of reagents and energy consumption

[0008] 2) The trailing indicators are difficult to control

[0009] 3) The quality of concentrate is difficult to stabilize

from figure 1 It can be seen that although the target particle content of all levels of concentrate pulp tends to increase during the process of producing final concentrate pulp, when the grade of raw ore pulp decreases, the grade of concentrate pulp of all levels also decreases. The quantity change, coupled with the ineffective circulation flotation effect strengthens this reduction change process, the grade balance period of the final concentrate pulp is significantly lengthened, and its quality fluctuation is significantly increased

[0010] 4) Automatic control is difficult to achieve

However, in actual production, various parameters of the inflowing pulp often fluctuate, and this fluctuation effect is amplified disorderly in the closed-circuit flotation process, which significantly increases the difficulty of process control and further increases the dependence on operating experience , so that it is difficult to implement effective automatic control in the closed-circuit flotation process for a long time

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