Invention Application
WO9936366A8 METHOD FOR THE TREATMENT OF GASEOUS DISCHARGES OF A UNIT MANUFACTURING AN OPTICAL-FIBRE PREFORM FOR RECOVERING GERMANIUM
审中-公开
用于处理用于恢复德国的单元制造光纤预制件的气体放电的方法
- Patent Title: METHOD FOR THE TREATMENT OF GASEOUS DISCHARGES OF A UNIT MANUFACTURING AN OPTICAL-FIBRE PREFORM FOR RECOVERING GERMANIUM
- Patent Title (中): 用于处理用于恢复德国的单元制造光纤预制件的气体放电的方法
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Application No.: PCT/FR9900083Application Date: 1999-01-18
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Publication No.: WO9936366A8Publication Date: 2000-08-17
- Inventor: APPRIOU ANDRE , CALVO LAURENT , LAVANANT GERARD
- Applicant: CIT ALCATEL , APPRIOU ANDRE , CALVO LAURENT , LAVANANT GERARD
- Assignee: CIT ALCATEL,APPRIOU ANDRE,CALVO LAURENT,LAVANANT GERARD
- Current Assignee: CIT ALCATEL,APPRIOU ANDRE,CALVO LAURENT,LAVANANT GERARD
- Priority: FR9800487 1998-01-19
- Main IPC: B01D53/34
- IPC: B01D53/34 ; B01D53/64 ; B01D53/68 ; B01D53/77 ; C01G17/00 ; C02F1/62 ; C03B37/014 ; C03B37/018
Abstract:
The invention relates to a method for treating gaseous discharges which stem from a unit manufacturing an optical-fibre preform and contain germanium. Said method consists of the following steps: preparation of a liquid effluent from the gaseous discharges, followed by precipitation of the germanium in the liquid effluent. According to the invention precipitation is carried out by the addition of magnesium oxide MgO to the liquid effluent.
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