公开(公告)号：EP0137618B1

公开(公告)日：1988-06-22

申请号：EP84305326.5

申请日：1984-08-06

申请人： PFIZER INC.

发明人： Kaiser, Joseph Gerard ,  Wirth, Emil Joseph

IPC分类号： C21C7/00

CPC分类号： C22C33/04 ,  C21C1/02 ,  C21C1/10 ,  C21C7/0056 ,  C21C7/06 ,  C21C7/064 ,  C21C7/068

公开(公告)号：EP0137618A2

公开(公告)日：1985-04-17

申请号：EP84305326.5

申请日：1984-08-06

申请人： PFIZER INC.

发明人： Kaiser, Joseph Gerard ,  Wirth, Emil Joseph

IPC分类号： C21C7/00

CPC分类号： C22C33/04 ,  C21C1/02 ,  C21C1/10 ,  C21C7/0056 ,  C21C7/06 ,  C21C7/064 ,  C21C7/068

摘要： A process for adding calcium to a bath (2) of molten ferrous material is disclosed in which a calcium metal-containing wire (1) is fed through a refractory lance (5) into the bath (2). Recirculatory stirring of the molten ferrous material is accomplished with an inert gas flow through the lance (5). The calcium-containing wire (1) is fed at such a rate that it substantially bends towards the horizontal direction after it leaves the lance (5) and melting of the calcium in the wire (1) occurs primarily in or directly below a region of downwelling of the molten ferrous material. Suitable wire feeding rates will depend upon the disposition of the lance (5) in the bath and the composition (e.g. clad or unclad) and cross-sectional dimensions of the calcium metal-containing wire (1). A preferred apparatus for adding processing elements in wire form directly into a molten material comprises a heat resistant nozzle (60) positionable relative to the surface of the molten material such that an inlet is disposed above the surface and an outlet (84) is disposed beneath the surface; a mechanism (24) for feeding the wire (20) through the nozzle (60) directly into the molten material; and a system (31, 33, 42) for injecting a substantially inert gaseous medium into the molten material together with the wire (20), whereby the inert gas substantially prevents closure of the nozzle (60) by solidified molten material and promotes mixture of the processing elements with the molten material through gas bubble agitation. The apparatus further comprises a substantially gas-tight conduit (44) connected to the nozzle inlet, through which the wire (20) and the inert gaseous medium are delivered to the nozzle (60). A pressure-driven seal (30) prevents atmospheric contamination and prevents loss of inert gas. Passing the wire (20) and gaseous medium through a bore in the nozzle (60) having an elongated, gradually tapered funnel-shaped section (80) adjacent the outlet (84) maximizes the effect of the inert gaseous medium.

摘要翻译： 公开了一种向熔融铁质材料的浴（2）中加入钙的方法，其中将含钙金属的丝线（1）通过耐火喷枪（5）进料到熔池（2）中。 熔融铁质材料的循环搅拌是通过穿过喷枪（5）的惰性气体流完成的。 含Ca的丝线（1）以这样的速率进给，使得其在离开喷枪（5）之后基本上向水平方向弯曲，并且丝线（1）中的钙的熔化主要发生在或 熔融黑色金属材料的下流。 合适的送丝速度将取决于喷枪（5）在浴中的配置以及含钙金属丝（1）的组成（例如包层或未包层）和横截面尺寸。 用于将线形式的处理元件直接添加到熔融材料中的优选设备包括可相对于熔融材料的表面定位的耐热喷嘴（60），使得入口设置在表面上方，并且出口（84）设置在 表面; 用于将所述线材（20）通过所述喷嘴（60）直接进入所述熔融材料的机构（24）; 和用于将线性材料（20）一起将基本上惰性的气体介质注入熔融材料的系统（31,33,42），由此惰性气体基本上防止了凝固的熔融材料堵塞喷嘴（60）并促进了 处理元件与熔融材料通过气泡搅动。 该设备还包括连接到喷嘴入口的基本上气密的导管（44），线（20）和惰性气体介质通过该导管输送到喷嘴（60）。 压力驱动密封件（30）防止大气污染并防止惰性气体的损失。 将导线（20）和气体介质通过喷嘴（60）中的孔具有邻近出口（84）的细长的渐渐锥形的漏斗状部分（80），使惰性气体介质的作用最大化。