发明授权
US5163496A Process for treating old foundry sand for reuse in place of core sand
失效
用于处理核心地段重新使用的旧地基砂的工艺
- 专利标题: Process for treating old foundry sand for reuse in place of core sand
- 专利标题(中): 用于处理核心地段重新使用的旧地基砂的工艺
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申请号: US754961申请日: 1991-09-04
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公开(公告)号: US5163496A公开(公告)日: 1992-11-17
- 发明人: Hermann Jacob
- 申请人: Hermann Jacob
- 申请人地址: CHX Schaffhausen
- 专利权人: Georg Fischer AG
- 当前专利权人: Georg Fischer AG
- 当前专利权人地址: CHX Schaffhausen
- 优先权: CHX02897/90 19900905
- 主分类号: B01D1/00
- IPC分类号: B01D1/00 ; B22C5/00 ; B22C5/04 ; B22C5/08 ; B22C5/18
摘要:
The present invention relates to a process for treating old foundry sand for reuse in place of core sand wherein the precleaned sand grains are subjected to further abrasive-thermal treatment so as to volatize and remove basic constituents adhering to the precleaned sand grains.
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