发明名称 |
REFRACTORY ARTICLES |
摘要 |
A filter for molten metal is an open-pored porous material comprising particles of refractory material embedded in and bonded together by a carbon matrix bonding material. The filter can be made by forming a porous article from refractory particles, e.g. refractory oxide, carbide or graphite, and a carbon-rich binder, e.g. tar, pitch or an organic (preferably aromatic) polymer that degrades to form carbon on pyrolysis, and then firing the porou s article to generate the carbon matrix in which the refractory particles are embedded. The porous article is preferably made by coating a reticulated polyurethane foam with binder and refractory particles, and firing at preferably no higher than 800 ~C. |
申请公布号 |
CA2413496(A1) |
申请公布日期 |
2002.03.07 |
申请号 |
CA20012413496 |
申请日期 |
2001.08.28 |
申请人 |
FOSECO INTERNATIONAL LIMITED |
发明人 |
BELL, DAVID ALAN;JUMA, KASSIM;JONES, DAVID LLEWELLYN;JAUNICH, HELMUT;ANSORGE, ANDREAS;SCHMIDT, MARTIN |
分类号 |
B22C9/08;B22D43/00;C04B38/00;(IPC1-7):B22C9/08;C04B38/06 |
主分类号 |
B22C9/08 |
代理机构 |
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