trommel


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trommel

[′träm·əl]
(mining engineering)
A revolving cylindrical screen used to grade coarsely crushed ore: the ore is fed into the trommel at one end, the fine material drops through the holes, and the coarse is delivered at the other end. Also known as trommel screen.
To separate coal into various sizes by passing it through a revolving screen.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The firm wanted permission for the trommel, a roof to enclose its currently open operation, a fence to screen noise and to create more waste handling bays as part of a pounds 500,000 investment.
When coupled with a small conveyor, feed material is delivered into a trommel in which a spray bar delivers up to 15 |m.sup.3~/h of water to scrub the gravels, disintegrating the clay to shake loose micron-sized gold.
The planning committee has now agreed to visit the waste transfer plant and investigate as they consider the application for a roof over the waste area and screening for the trommel machinery.
The product line includes creative belt-style conveyors, oscillating/vibratory transfers, and stationary rotary (trommel) screens.
Components can be sold individually: granulators, bale breakers, spin dryers, trommels, air conveying/classification systems, float/sink classifiers, PET crystallizers, rotary hot-air dryers, and flake washers.
Next the waste goes into a rotating trommel where sharp cutters break open bags and separate ferrous metals through magnetic separation.
Once this material is pulled out, the OCC is sent through a series of disc screens to remove more off-spec paper and trommel screens to remove fines before heading to a pulper via conveyor.
A Cat 325 excavator with a NPK grapple not only feeds the inclined belt to the first screen, a trommel, but also sorts out large bulky items.