How to increase the amount of aeration of the mechanical agitation flotation machine?
Both practice and theoretical research have proved that within a certain range, increasing the amount of aeration can greatly improve the production capacity of the flotation machine and improve the flotation index.
There are many factors affecting the aeration volume of the flotation machine, which can be adjusted mainly from the following aspects:
(1) The gap between the impeller and the cover. The size of this gap directly affects the amount of inflation. If the clearance is too large, the slurry will turn from the front side of the blade to the back side of the blade, reducing the vacuum behind the blade and reducing the amount of inflation. If the clearance is too small, the impeller and the cover are prone to impact. And friction, and reduce the amount of inflation.
(2) The speed of the impeller. The larger the rotational speed of the impeller in a certain range, the larger the amount of inflation. However, if the rotational speed is too large, the impeller cover wears quickly, the power consumption increases, and the slurry surface is unstable.
(3) The pulp mass fraction also has a great influence on the amount of aeration and the degree of dispersion. In a catastrophic condition, as the mass fraction of the pulp increases within a certain limit, the amount of aeration and the degree of dispersion also increase. However, the mass score should not be too large. If it is too large, the amount of inflation will deteriorate.
(4) The amount of slurry. When the amount of slurry entering the center of the impeller is most appropriate, the amount of aeration is the largest. Because the amount of slurry is large within a certain range, the centrifugal force generated when the slurry is scooped out is also large, and the vacuum in the negative pressure zone formed is high, so that the amount of inflation is increased. However, if the amount of slurry is too large, the slurry will block the air cylinder above the impeller, causing difficulty in inhaling, and the amount of inflation will be reduced.
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