Title: Technology for removing dross on surface of fusant
Application Number: 90104283 Application Date: 1990.06.15
Publication Number: 1046567 Publication Date: 1990.10.31
Approval Pub. Date: Granted Pub. Date: 1992.11.11
International Classifi-cation: C30B15/00,C30B15/12
Applicant(s) Name: Semiconductor Inst., Chinese Academy of Sciences Address: 100083
Inventor(s) Name:
Attorney & Agent: LU JI
Abstract:
     The present invention relates to technique of removing molten-slag on the melt in CZ mono crystal furnace. A upper crucible which has a small hole on its bottom is installed on a other crucible (lower crucible) which is used for crystal growth, a tray is connected with a straight shank and through the hole to lift the upper crucible. At first the solid material has been melted in upper crucible, while the melt is leaked into lower crucible, and then lifting the upper crucible, the molten-slag has been removed. Said device is simple, operating is convenient, and has optimum effect.
Time: 3