Densimetric tables
MD SERIE.
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- Particles separation depending on their density.
- Set composed by a vibrating table, two fans and a cyclone.
- High efficiency due to the air impulsion principle.
- Air flow, tray inclination and vibration amplitude can be regulated.
- Volatiles collection through filter or cyclone.
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Description
The densimetric table separation is based on the difference in density between the different products. That means that it has nothing to do with a size classification.
The product to be handled is fed by the upper part, distributed in the whole width, either with a belt conveyor or a vibrating feeder, to the inclined tray.
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The tray is driven by 2 URBAR unbalanced motors and is equipped with a perforated plate, allowing the air circulation, impelled from the lower part.
One aspiring fan and one impelling fan complete the installation.
The product separation is then obtained.
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Separation is made in three different steps:
The heaviest materials settle on the densimetric tables and tend to move upwards on the slightly ascending tables, due to the vibration.
Under an ascending air flow the lighter fractions come to the surface and flows downward.
The volatiles are collected by a cyclone, avoiding any environment pollution.
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The equipment can be adapted to the needs, depending on the material to be classified, modifying the following parameters:
- The air flow and pressure impelled and aspired by the two fans.
- The tray inclination, supported by pneumatic mountings.
- The vibration amplitude, modifying the unbalanced motors centrifugal force.
- The air distribution through the tray.
Construction details.
The vibrating tray is isolated from the frame, through a pneumatic suspension, in order to modify its inclination, when necessary, obtaining an excellent vibration isolation.
The table is driven by two URBAR electric unbalanced motors, installed in the tray lower part.
In both outlets, the product overflowing can be regulated, depending on its real behaviour on the site.
The impelling fan produces the requested air current, through the vibrating tray perforated plate, allowing the heaviest particles to settle on the tray, whereas the lighter fractions come to the surface.
The aspiring fan produces the adequate air current to collect the volatile materials, through the union conducts to the cyclone or the filter.
Both fans are centrifugal and are equipped with manual valves to control the air volume.
The cyclone is made by a cylindrical part, where the air gets in, from the aspiration conduct and a truncated cone, coupled to the cylinder.
In its lower part, the cyclone is equipped with a rotating valve for emptying the decanted material. Other dust collection devices can be used, such as filters.
Under the vibrating table, there is a fines (from the heaviest particles) colleting hopper equipped with a valve for emptying, manually driven.
Technical data.
Standard dimensions depending on the vibrating tray dimensions:
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TYPE
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MD50 |
MD75
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MD100
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MD120
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MD150
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2xMD120
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Ancho (mm)
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500
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750
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1000
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1200
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1500
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2.400
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Superficie (m2)
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0,75
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1,15
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1,50
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1,80
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2,25
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3,60
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The most usual applications for the densimetric tables are the separation of:
- Inert (glass, sand.) from compost or rubbish in Solid Waste Recycling Plants.
- Plastic and paper from glass in glass factories.
- Products with different densities and similar sizes: aluminium from scrap, brass-copper from plastics; coal depuration; chips from wood.
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