Packaging of polycrystalline silicon
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United States of America Patent
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Jan 24, 2017
Grant Date -
May 15, 2014
app pub date -
Oct 31, 2013
filing date -
Nov 9, 2012
priority date (Note) -
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Abstract
The invention relates to a process for packaging polycrystalline silicon in the form of chunks, including the following steps: (a) providing polycrystalline silicon in a metering system; (b) filling polycrystalline silicon from the metering system, which removes fines by use of screening, into a plastic bag arranged below the metering system. The weight of the plastic bag with the polycrystalline silicon introduced is determined during the filling step and the filling step is ended after the attainment of a target weight. A fall height of the polycrystalline silicon from the metering system into the plastic bag is kept at less than 450 mm by use of at least one clamp apparatus over the entire filling step.
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