公开(公告)号：US4730814A

公开(公告)日：1988-03-15

申请号：US17883

申请日：1987-02-20

申请人： Andre Bock ,  Roamin Henrion ,  Jean Liesch ,  Carlo Heintz ,  Henri Klein ,  Jean-Francois Liesch

发明人： Andre Bock ,  Roamin Henrion ,  Jean Liesch ,  Carlo Heintz ,  Henri Klein ,  Jean-Francois Liesch

IPC分类号： C21C7/072 ,  C21C5/46 ,  C21C5/32

CPC分类号： C21C5/4606

摘要： A blast pipe for delivering refining oxygen to the space above a metal bath in a refining operation is presented. The blast pipe is positioned in a gas supply duct and is provided with a pressure regulating valve. The blast pipe comprises a fixed straight wall portion along which the gas flows in a linear path. The straight wall portion terminates at a sharp edge, constituting a portion of the blast pipe exit orifice. A bent wall segment is located adjacent to and downstream of the straight wall portion and connects the remainder of the straight wall portion to the exit orifice. The bent wall segment preferably has a convergent configuration, upstream of the sharp edge, and a divergent configuration downstream thereof. The exit orifice, in cross section, has the shape of a rectangle, one of the long sides of which constitutes the sharp edge.

摘要翻译： 提出了一种用于在精炼操作中将精炼氧提供到金属浴上方的空间的鼓风管。 鼓风管位于气体供给管道中并设有压力调节阀。 鼓风管包括固定的直壁部分，气体沿着该固定的直壁部分在线性路径中流动。 直壁部分终止于锋利的边缘，构成鼓风管出口孔的一部分。 弯曲的壁段位于直壁部分附近和下游，并将直壁部分的其余部分连接到出口孔。 弯曲的壁段优选地具有在锋利边缘的上游和在其下游的发散构造的收敛构型。 出口孔的横截面具有矩形的形状，其长边中的一个构成锋利的边缘。