发明名称 |
VERFAHREN ZUM PASSIVIEREN VON SCHWAMMEISENPELLETS |
摘要 |
<p>Sponge iron pellets are protected against re-oxidation by pre-wetting them with water or steam, coating them with a pulverulent passivating agent which is a mixture of iron oxide particles and hydraulic cement particles, then drying the treated pellets. Especially good results are achieved by using a hydraulic cement such as Portland cement and an iron oxide/cement ratio of 40:60 to 70:30.</p> |
申请公布号 |
DE3228775(A1) |
申请公布日期 |
1983.02.24 |
申请号 |
DE19823228775 |
申请日期 |
1982.08.02 |
申请人 |
HYLSA S.A. |
发明人 |
HUGO CARRILLO-CANTU,DAVID;TREVINO-ALANIS,ASDRUBA |
分类号 |
C21B13/00;C22B1/24;(IPC1-7):22B1/243 |
主分类号 |
C21B13/00 |
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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