CLOSED-CIRCUIT GRINDING PLANT HAVING A PRE-CLASSIFIER AND A BALL MILL
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United States of America Patent
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Oct 6, 2016
app pub date -
Dec 9, 2014
filing date -
Dec 9, 2014
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Abstract
A closed-circuit grinding plant for grinding fresh material, comprising a first device for grinding the fresh material, a static pre-classifier preclassifying the ground material, having an input for the ground material, an output for a coarse meal fraction, and a further output for a fine-grained output material. A device separates out fine material, having an output for a coarse-grained fraction, with subsequent recirculation to the first grinding device, an output for fine material, and at least one input. The input is connected to the static pre-classifier output. A second grinding device is also provided. The static pre-classifier is a cascade classifier and the second grinding device is a ball mill The ball mill has a material inlet connected to the output opening for the coarse meal fraction of the cascade classifier and a material outlet connected to an input opening of the device for separating out fine material.
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