Drums with screens separate fine from large materials and are used in mining, gravel processing, and waste management. They can be driven by a motor and conveyor belts, and paired with pulverizers to generate a continuous supply of rock. They are useful in portable settings and geotechnical exploration sites.
A drum is a rotating drum with a screen that allows fine material to fall out while holding larger materials. Rollers are useful in processing a wide variety of solids, particles and mixtures. They are available in an assortment of sizes to meet various manufacturing needs and can be used with accessory components to increase functionality if needed. Some industries that use screeners include mining, gravel processing, and solid waste management fields.
To drive a drum, a technician can start a motor that rotates the drum and then add material through a suction chute. You can keep the device running continuously by adding more to the chute as the drum works. As the drum spins, it aerates the materials inside. Smaller particles fall to the bottom and out of the bottom of the screen, while larger materials make their way to the opposite end, and finally out the end and into an exit hopper.
It is possible to use conveyor belts with sieves to handle fine and coarse particles. In a structure such as a gravel processing plant, rock can move through a series of progressively coarser screens to produce different grades of rock. These can range from very small filler gravel to much larger chunks. Each grade contains rocks within a narrow set of parameters; the smaller rocks fell during the previous processing, while the larger rocks were held and moved along the conveyor.
Another tool that some businesses may choose to use with a drum is a pulverizer. Pulverizers crush rock, stone and other materials into smaller pieces. They can feed the crushed materials into a sorting drum to generate a continuous supply of rock of a given size. These devices can be connected to hoppers that directly load bags or trucks for transportation, in environments where a facility processes materials for sale or shipment to other locations.
Mining, rock processing and similar industries use these devices. They can also be useful in waste management and construction sites, where workers can set up a portable device. Portability allows workers to sort materials they find on the side, instead of having to ship them to a remote location. Small sizes typically have weaker motors and may not be able to process high volumes of material, but may be acceptable for basic applications such as geotechnical exploration sites where geologists want to process material to determine if the site is worth further investigations.
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