公开(公告)号：US20090229416A1

公开(公告)日：2009-09-17

申请号：US11596500

申请日：2005-05-12

申请人： Andrew M. Cameron ,  Michael James Strelbisky ,  Andrew Peter Richardson ,  John Batham ,  Mark Alan Wilkinson

发明人： Andrew M. Cameron ,  Michael James Strelbisky ,  Andrew Peter Richardson ,  John Batham ,  Mark Alan Wilkinson

IPC分类号： C22B9/05 ,  C22B5/00 ,  C21B7/16

CPC分类号： C21C5/32 ,  C21C5/4606

摘要： A method of refining molten metal in a vessel by the reaction of oxygen with impurities in the molten metal comprises the steps of: a) ejecting at least one primary jet of oxygen from a lance positioned above the molten metal into the molten metal to react with impurities therein and to form a layer of molten slag; b) continuing to eject the primary jet of oxygen from the lance and thereby causing the primary bet of oxygen to pass through the slag layer into the molten metal; c) ejecting a plurality of secondary jets of oxygen from the lance, the secondary jet of oxygen travelling for a distance separately from the primary jet of oxygen; and d) entraining the secondary jets of oxygen into the primary jet of oxygen upstream of the entry of the primary jet of oxygen into the molten metal. A lance head for use in the method has at least one primary oxygen port and a plurality of secondary oxygen ports, the axis of the second oxygen port diverging in the direction of flow from the primary oxygen port at an angle of up to 45°. The method and lance head are particularly of use in the Basic Oxygen Steelmaking (BOS) process. If desired, a stirring gas such as argon may be mixed with the primary oxygen.

摘要翻译： 通过氧气与熔融金属中的杂质的反应来在容器中精炼熔融金属的方法包括以下步骤：a）从位于熔融金属上方的喷枪将至少一个主要的一次射流喷射到熔融金属中以与 并且形成一层熔渣; b）继续从喷枪喷出主喷射的氧气，从而使氧的初始注入通过熔渣层进入熔融金属; c）从所述喷枪喷射多个次要喷射的氧气，所述次要喷射的氧气与所述主喷射流分开运动一段距离; 以及d）将二次喷射的氧气引入氧气初级射流进入熔融金属的上游的主要喷射流中。 用于该方法的喷枪头具有至少一个主氧气端口和多个次级氧气端口，第二氧气端口的轴线以最多45°的角度从主氧气端口沿着流动方向发散。 方法和喷枪头特别适用于基本氧气炼钢（BOS）工艺。 如果需要，可以将诸如氩的搅拌气体与初级氧混合。

公开(公告)号：US20070057417A1

公开(公告)日：2007-03-15

申请号：US11222567

申请日：2005-09-09

申请人： Michael Strelbisky ,  Andrew Richardson ,  Mark Wilkinson ,  Andrew Cameron ,  John Batham

发明人： Michael Strelbisky ,  Andrew Richardson ,  Mark Wilkinson ,  Andrew Cameron ,  John Batham

IPC分类号： C21C5/32

CPC分类号： C21C5/4606 ,  C21C5/32

摘要： A method of controlling total jet pressure from the head of a metallurgical lance for introducing gas into a volume of metal in a vessel. The lance head has at least one ejector, which has a nozzle located in a bore of the lance head and has an annular gas passage between at least one nozzle and the wall of the bore. The method proceeds by adjusting the annular gas velocity from a first Mach number to a second mach number to effect change of the total jet pressure.

摘要翻译： 控制来自冶金喷枪头部的总喷射压力的方法，用于将气体引入容器中的一定体积的金属。 喷枪头具有至少一个喷射器，其具有位于喷枪头的孔中的喷嘴，并且在至少一个喷嘴和孔的壁之间具有环形气体通道。 该方法通过调节从第一马赫数到第二马赫数的环形气体速度来实现总喷射压力的改变。