Description
The working principle of the mine sludge belt filter press is based on the combination of gravity filtration and pressure filtration. First, the mine sludge is evenly distributed on a continuously running filter belt through the feeding device. As the filter belt moves slowly, the sludge begins to be initially dewatered under the action of gravity, and most of the free water is filtered out at this stage. Then, the filter belt with the initially dewatered sludge enters the pressing zone composed of two upper and lower filter belts. In the pressing zone, a series of rollers set according to different pressure gradients apply gradually increasing pressure to the filter belts and the sludge sandwiched in the middle.
The action of this pressure further squeezes out the water in the sludge, which is discharged through the mesh holes of the filter belts, thus achieving the deep dewatering of the sludge. After multiple pressing processes, a mud cake with a relatively low moisture content and certain strength is finally obtained, completing the entire process of solid – liquid separation.
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