公开(公告)号：US4173466A

公开(公告)日：1979-11-06

申请号：US857897

申请日：1977-12-06

申请人： John R. McLaughlin ,  Michael D. Bryant ,  Manfred Fessel ,  Kenneth C. Taylor

发明人： John R. McLaughlin ,  Michael D. Bryant ,  Manfred Fessel ,  Kenneth C. Taylor

IPC分类号： C21C1/02 ,  C21C1/10 ,  C21C7/04 ,  C21C7/06 ,  C21C7/02

CPC分类号： C21C7/06 ,  C21C1/025 ,  C21C1/105

摘要： Treatment agents are described for use in nodularizing cast iron in the production of ductile iron and also useful in deoxidizing steel and desulphurizing cast iron. The agents take the form of a compacted mixture comprising particulate iron, magnesium and calcium, and are distinguished by(a) a magnesium content of 5 to 15% by weight(b) a weight ratio of magnesium to calcium in the range of from 1:1 to 8:1(c) the iron having a purity of at least 95% by weight and a particle size of all less than 0.5 mm and(d) being compacted into a body of density at least 4.3 gm/cm.sup.3.The high density allows the agent to be used effectively by a simple overpour technique.

摘要翻译： 描述了用于球墨铸铁的球墨铸铁的处理剂，并且还可用于脱氧钢和脱硫铸铁。 这些试剂采用包含颗粒状铁，镁和钙的压实混合物的形式，其特征在于（a）镁含量为5至15重量％（b）镁与钙的重量比为1 ：1〜8：1（c）纯度至少为95重量％，粒径全部小于0.5毫米的铁，（d）被压实成密度至少为4.3克/立方厘米的体积。 高密度允许通过简单的大量燃烧技术有效地使用试剂。