发明名称 |
Method and apparatus for reclaiming foundry sand |
摘要 |
A method and apparatus for reclaiming foundry sand from contaminated foundry sand wherein ferromagnetic contaminants are first removed in a magnetic separating zone, and the remaining contaminated sand is thermally treated at a temperature sufficiently high to cause embrittlement of clay constituents among the remaining contaminants, and finally the thermally treated material is comminuted, preferably in a counterflow impact jet mill to recover a reclaimed foundry sand substantially free from contaminants.
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申请公布号 |
US4491277(A) |
申请公布日期 |
1985.01.01 |
申请号 |
US19830554381 |
申请日期 |
1983.11.25 |
申请人 |
KLOECKNER-HUMBOLDT-DEUTZ AG |
发明人 |
BAUER, HANS;SCHMITZ, HEINZ-WITHOLD |
分类号 |
B22C5/00;B22C5/18;(IPC1-7):B02C19/12 |
主分类号 |
B22C5/00 |
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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