发明名称 |
Verfahren zur Behandlung von Abgasen einer Vorrichtung zur Herstellung von Vorformen von optischen Glasfasern zur Germanium-Zurückgewinnung |
摘要 |
In an optical fiber preform production waste gas treatment process, germanium is precipitated from a liquid, formed from the waste gas, by adding magnesia (MgO). Preferred Features: The waste gas, containing germanium tetrachloride (GeCl4), is reacted with caustic soda to form a liquid waste containing germanium and hypochlorite, the latter being reduced by formic acid addition. |
申请公布号 |
DE69924164(T2) |
申请公布日期 |
2006.05.11 |
申请号 |
DE1999624164T |
申请日期 |
1999.01.18 |
申请人 |
DRAKA COMTEQ B.V., AMSTERDAM |
发明人 |
APPRIOU, ANDRE;CALVO, LAURENT;LAVANANT, GERARD |
分类号 |
C03B37/018;B01D53/34;B01D53/64;B01D53/68;B01D53/77;C01G17/00;C02F1/62;C03B37/014 |
主分类号 |
C03B37/018 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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