发明名称 |
VERFAHREN ZUR WIEDERVERWERTUNG VON AUS THORIERTEM WOLFRAM BESTEHENDEN GEGENSTÄNDEN |
摘要 |
<p>Process for recycling objects made of thoriated tungsten comprises oxidizing the objects to form thorium-containing and/or thorium oxide-containing tungsten oxide powder; homogenizing the powder; and chemically reducing the powder in a hydrogen gas atmosphere to form thoriated tungsten powder. Preferred Features: The objects are crushed before being oxidized. Oxidation is carried out in air by thermal treatment. Chemical reduction is carried out in a rotating tubular furnace. The thorium content of the thoriated tungsten powder is changed by adding thorium oxide or non-thoriated tungsten powder.</p> |
申请公布号 |
AT260995(T) |
申请公布日期 |
2004.03.15 |
申请号 |
AT20010119946T |
申请日期 |
2001.08.17 |
申请人 |
PATENT-TREUHAND-GESELLSCHAFT FUER ELEKTRISCHE GLUEHLAMPEN MBH |
发明人 |
MEISS, DIETER, DR. |
分类号 |
B22F9/22;B23K35/40;C22B5/12;C22B7/00;C22B34/36;C22C1/10;(IPC1-7):C22B34/36 |
主分类号 |
B22F9/22 |
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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