发明名称 |
METHOD FOR EXTRACTING ZINC PRESENT IN LIQUID CAST IRON, AND MEANS FOR IMPLEMENTING SUCH METHOD. |
摘要 |
<p>PCT No. PCT/FR91/00776 Sec. 371 Date Sep. 17, 1993 Sec. 102(e) Date Sep. 17, 1993 PCT Filed Oct. 3, 1991 PCT Pub. No. WO92/06222 PCT Pub. Date Apr. 16, 1992.The invention relates to the field of metallurgy and to a method and a device for the extraction of zinc in solution in a liquid iron bath (2) held in a container (3), such as a crucible for the casting of foundry parts. It is characterized in that, before utilizing the bath for the casting of parts, in a first phase, the gas volume (7) situated in the container (3) is sealingly confined in the east iron bath (2) and, in a second phase, a variable partial vacuum is created in the confined atmosphere in a controlled way in order to constantly adjust it to a predetermined value as a function of the time evolution of the pressure of vapor saturating zinc in solution in the melt at the bath temperature; and said zinc is trapped.</p> |
申请公布号 |
EP0553216(B1) |
申请公布日期 |
1994.12.14 |
申请号 |
EP19910919204 |
申请日期 |
1991.10.03 |
申请人 |
ECOLE CENTRALE DE LILLE;TISSIER, JEAN CHARLES;PERROT, PIERRE;DAUPHIN, JEAN YVES |
发明人 |
TISSIER, JEAN CHARLES;PERROT, PIERRE;DAUPHIN, JEAN YVES |
分类号 |
C21C1/04;C22B9/04;C22B19/04;(IPC1-7):C21C1/04 |
主分类号 |
C21C1/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|