发明名称 |
Verfahren und Vorrichtung zur Reduktion feuerfester Metalloxide |
摘要 |
1313845 Reduction of molybdenum or tungsten oxide UNITED KINGDOM ATOMIC ENERGY AUTHORITY 14 April 1970 [23 April 1969] 20865/69 Heading C1A [Also in Divisions C7 and F4] Tungsten or molybdenum oxide is reduced by contacting a bed of the hot oxide with a current of CO and recirculating to the bed the mixed monoxide and dioxide off-gases over a reducing agent for reducing carbon dioxide to monoxide. The product of the reduction may be the metal or its carbide depending on the temperature and CO 2 concentration in the reaction. Tungsten carbide is specified as being obtained by reduction of the oxide at 850‹ C. and a CO 2 core below 20% v/v. At higher concentrations the metal is produced. Apparatus claimed for carrying out the process of the invention comprises a kiln 1 heated by external heating means 3 and a means 4 together with connecting pipes for passing off gases from the kiln 1 through a vessel 5 for containing the reducing agent and back to the kiln 1. |
申请公布号 |
DE2019399(A1) |
申请公布日期 |
1970.11.12 |
申请号 |
DE19702019399 |
申请日期 |
1970.04.22 |
申请人 |
UNITED KINGDOM ATOMIC ENERGY AUTHORITY |
发明人 |
RHYS JENKINS,THOMAS |
分类号 |
B22F9/22;C01B31/34 |
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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