Transcription of TECHNICAL NOTES 4 VIBRATING SCREENS - …
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TECHNICAL NOTES 4 VIBRATING SCREENS - …
Copyright R P King 2000 TECHNICAL NOTES 4 VIBRATING SCREENS4-1 SIZE CLASSIFICATIONIt is always necessary to control the size characteristics of particulate material that is fed to processequipment that separates the mineralogical components. It is not possible within the productionenvironment to exercise precise control over the size of all particles in a population and, in mostcases, size classification equipment is designed to split a feed of particulate material into a coarseand a fine product. Occasionally one or two product streams of intermediate size may be producedsuch as by a double or triple deck screen . Probably the most common application of sizeclassification is its use to prevent oversize material leaving a comminution circuit. Oversize materialis recycled to a comminution stage for further size reduction before passing to subsequent stages most significant consideration when evaluating classification equipment is the lack of a cleancut at a particular size.
4-2 surface area so that the basic capacity is specified at tons of feed per hour per square meter of screen. This quantity is represented by Iu.The basic capacity of any screen is determined under standard
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