How to Achieve Bubbles Adsorption by Tungsten Ore Flotation
In the process of tungsten ore flotation, under the action of flotation reagent, bubbles appear on the surface of flotation machine, the target ore particles begin to float, and gradually enriched and adsorbed in the bubbles.
People get the needed ore particles by collecting and processing the bubbles, in this process, how does the flotation bubble adsorb ore particles?
Generally speaking, tungsten ore particles and bubbles are close to each other, the water between the cracks should be removed first, because the water molecules are disordered freely, so it is easy to be removed, when the bubbles and the ore particles are further approaching, the hydration film on the ore surface is thinned by the extrusion of the bubbles, the process of sticking ore particles to bubbles can be divided into three stages.
The first stage is the approaching and contacting stage of the ore particles. In the process of flotation, due to the mechanical and aerating effects of flotation, the ore particles and bubbles are constantly colliding, the particle bubble between ordinary aquifers are crowding out, until the hydrated film on the surface of the ore particles contacts the hydrate film on the surface of the bubble.
The second stage is the thinning and fracture stage of the hydration film between the ore particles and the bubbles, because there is a stable hydration film on the surface of the ore particle, a similar hydration film is also present on the bubble surface, when the particles and bubbles close to each other and the hydration film of each other is thinned, at last, the hydration film becomes very unstable and finally causes a large range of rupture.
The third stage is the attachment stage of the ore particles on the bubble. When the ore particles contact the bubbles, most of the hydration film are squeezing out from the ore surface, and the surrounding ore particles are gradually expanded, and the ore particles begin to adhere to the bubbles.
At the ore dressing plant, technical personnel will be arranged in the flotation machine on the edge of the regular observation bubble reaction process, because the degree of adsorption of the bubble often determines the amount of the final harvest of tungsten ore, if abnormal situation is found, it is also convenient and timely to follow-up. Of course, how to achieve the bubble adsorption process perfectly is hard to say, all the details determine success or failure. Usually in the use of flotation agent, temperature, mineral paste adhesion firmness, mineral water hydrophobic size, mineral particle geometry is also an important factor in determining the bubble adsorption effect.
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