公开(公告)号：EP1794096A2

公开(公告)日：2007-06-13

申请号：EP05796761.4

申请日：2005-08-31

申请人： CORNING INC. ,  Burdette, Steven R. ,  Fraley, Raymond E. ,  Wagner, Robert S.

发明人： BURDETTE, Steven R. ,  FRALEY, Raymond E. ,  WAGNER, Robert S.

IPC分类号： C03B5/18 ,  C03B5/16

CPC分类号： C03B5/16 ,  C03B5/187

摘要： The present invention is directed toward a method of reducing contamination of a glass melt by oxide particulates, such as particulates of platinum oxide, which may condense on the inside surfaces of a stir chamber, particularly the stir shaft, and fall back into the glass melt. The method includes causing a flow of gas through an annular space between the shaft and the chamber cover. In one embodiment, the flow of gas through the annular space is caused by drawing a vacuum in the chamber. An apparatus for practicing the method is also provided.