How does the flotation process control the mixing intensity and mixing time?

The agitation of the slurry during the flotation process can be divided into two stages according to its function:

The first is the agitation of the slurry before it enters the flotation machine. Its function is to accelerate the interaction between the ore and the agent;

The second is the agitation of the slurry after it enters the flotation machine. It is the agitation in the flotation machine, in order to suspend the ore particles and disperse the bubbles, and promote the adhesion of the ore particles to the bubbles.

Strengthening the agitation in the adjustment tank can promote the action of the ore particles and the medicament, shorten the adjustment time of the slurry and save the dosage of the medicament. The agitation intensity of the adjustment tank depends on the impeller speed, and the higher the impeller speed, the greater the agitation strength. Properly strengthening the agitation strength is advantageous, but not too strong. If it is too strong, the power consumption and equipment wear will increase, the degree of muddyness of the ore particles will also increase, and the ore particles that have adhered to the bubbles will fall off.

The length of the stirring time in the adjustment tank is determined by the difficulty of dispersing the medicament in water and the speed at which they interact with the ore. The foaming agent (such as pine oil) is stirred for 1 to 2 minutes, and the general medicament is stirred for 5 to 15 minutes. Flotation of cassiterite with mixed toluene secondary acid often requires 30-50rain.

When a heavy chromate inhibition galena, stirring time to 30min to BU. Sometimes up 4-6h. The agitation time is also related to the use and nature of the agent. For example, when the metal oxide ore nonferrous sulfide with sodium sulfide, mixing time should be appropriate, time is too short, insufficient vulcanization; too long, oxidation of sodium sulfide will fail.

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