Device for communication of process feed material with upstream sifting
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United States of America Patent
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Jul 28, 2020
Grant Date -
Mar 3, 2016
app pub date -
Sep 2, 2015
filing date -
Sep 2, 2014
priority date (Note) -
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Abstract
A device for the comminution of free-flowing feed material is provided that includes a housing enclosing a comminution chamber which contains a rotor that rotates around an axis, and has comminution tools over its circumference. A feeding device to transport the feed material to the comminution chamber in form of a gas-solid matter mixture, wherein the feeding device features a pneumatic sieve passage which uses the effect of gravity for removal of foreign particles from the feed material. In order to operate both the sieve passage and the device under optimal process parameters, the device features at least one inlet port for the supply of secondary air, wherein the at least one inlet port flows into the gas-solid matter mixture downstream of the sieve passage.
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