Method and installation for producing hollow microbeads of glass
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United States of America Patent
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Sep 12, 2017
Grant Date -
Aug 4, 2016
app pub date -
Feb 1, 2016
filing date -
Jan 30, 2015
priority date (Note) -
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Abstract
Hollow microbeads of glass are produced during a number of operating phases in which an upwardly directed hot gas flow is produced in a firing chamber by firing a vertical furnace. The firing chamber is continuously charged with microparticles of a starting glass material and the microparticles are expanded in the hot gas flow into the hollow microbeads. Expanded hollow microbeads are discharged out of the firing chamber with the gas flow through a gas outlet at the upper end of the vertical furnace. Between successive operating phases there is respectively provided a charging break, during which the charging of the firing chamber with the microparticles is suspended. In these charging breaks, the microparticles remaining in the firing chamber are respectively removed from the firing chamber.
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