公开(公告)号：US09360255B2

公开(公告)日：2016-06-07

申请号：US14192345

申请日：2014-02-27

Applicant: ABB Research Ltd.

Inventor： Jan-Erik Eriksson ,  Tord Kroon ,  Mohamed Ali Rahmani ,  Ola Widlund ,  Xiaojing Zhang ,  Christer Carlsson ,  Hongliang Yang

IPC: F27D3/15 ,  F27B3/08 ,  F27B3/19 ,  F27D27/00 ,  B22D37/00 ,  B22D41/08 ,  C21C5/46

CPC classification number: F27D3/1518 ,  B22D37/00 ,  B22D41/08 ,  C21C5/4653 ,  F27B3/085 ,  F27B3/19 ,  F27D3/1509 ,  F27D27/00

Abstract: A method for reducing vortex formation in molten metal when bottom tapping the molten metal from a metallurgical vessel in a metal making process. The method includes the steps of tapping the molten metal via a tapping hole in the metallurgical vessel, and providing a flow of the molten metal in the metallurgical vessel while tapping via a time-varying electromagnetic field applied to the metallurgical vessel, the flow of the molten metal being such that it constantly moves vortices in the molten metal away from a tapping hole region during the tapping to thereby prevent accumulation of the vortices for vortex formation over the tapping hole. It is also presented an arrangement for carrying out the method.

Abstract translation: 一种用于在金属制造过程中从冶金容器底部冲出熔融金属时减少熔融金属中的涡流形成的方法。 该方法包括以下步骤：通过冶金容器中的攻丝孔攻击熔融金属，并且通过施加到冶金容器上的时变电磁场来提供熔融金属在冶金容器中的流动， 熔融金属使得其在攻丝期间不断地将熔融金属中的涡流从攻丝孔区域移动，从而防止涡流积聚在出孔上形成涡流。 还提出了执行该方法的安排。