发明名称 |
Processing of ceramic materials |
摘要 |
A process for treating a nitride-containing ceramic material which includes the following steps:(1) comminuting the material to produce a particulate ceramic material having a particle size distribution such that at least 40% by weight of the particles have an equivalent spherical diameter (esd) smaller than 2 mum; and(2) a ferrosilicon separation step comprising one or both of the following steps:a) subjecting the particulate ceramic material produced in step 1 to differential sedimentation in a liquid medium to produce substantial separation of a light fraction from a heavy fraction, ferrosilicon required to be separated being included in the heavy fraction and refined particulate ceramic material being included in the light fraction;b) subjecting a suspension of the particulate ceramic material to magnetic separation to produce substantial separation of magnetic particulate material from non-magnetic particulate material, refined particulate ceramic material being included in the non-magnetic material.
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申请公布号 |
US6341739(B1) |
申请公布日期 |
2002.01.29 |
申请号 |
US19970999039 |
申请日期 |
1997.12.29 |
申请人 |
IMERYS MINERALS LIMITED |
发明人 |
HOGG CHRISTOPHER STIRLING |
分类号 |
C04B35/628;C01B21/068;C01B21/082;C04B35/584;C04B35/597;C04B35/626;(IPC1-7):B02C23/08 |
主分类号 |
C04B35/628 |
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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