发明名称 |
Foundry sand with oxidation promoter |
摘要 |
Coating foundry sand with a thin layer of an oxidation-promoting catalyst. Preferred catalysts comprise ferric and cupric oxides. The catalysts promote the oxidation of any polymeric binder or residues admixed with the sand. The sand is coated by wetting the grains with a solution of a catalyst precursor, drying the sand and baking the sand in air to convert the precursor to the catalyst.
|
申请公布号 |
US2002195023(A1) |
申请公布日期 |
2002.12.26 |
申请号 |
US20020208616 |
申请日期 |
2002.07.30 |
申请人 |
SARGENT NICHOLAS EDWARD;SIAK JUNE-SANG;CAI MEI |
发明人 |
SARGENT NICHOLAS EDWARD;SIAK JUNE-SANG;CAI MEI |
分类号 |
B22C1/02;B22C1/22;B22C9/04;B22C9/10;B22C9/12;(IPC1-7):C09D1/00;B28B7/28;B28B7/34 |
主分类号 |
B22C1/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|