公开(公告)号：EP2851439A1

公开(公告)日：2015-03-25

申请号：EP13790587.3

申请日：2013-05-13

申请人： Posco

发明人： CHOI, Ja Yong ,  HAN, Seung Min ,  KIM, Sun Koo ,  LEE, Hee Ho ,  JUNG, Sang Yuel ,  SEO, Young Jong

IPC分类号： C21C7/00

CPC分类号： C21C7/00 ,  B22D1/00 ,  B22D11/116 ,  B22D11/118 ,  B22D41/00 ,  B22D41/08 ,  C21C7/0075 ,  C21C7/06 ,  C21C7/076 ,  Y02P10/242

摘要： The present invention relates to a method and a refining device for producing molten steel of outstanding cleanliness, and more particularly provides a method and device for refining inclusions by forming droplets from molten steel and dropping same into slag during preprocessing in a continuous casting process in a steel-making process. Also, the present invention provides a method for producing high cleanliness molten steel comprising a molten-steel supply device for supplying molten steel and a molten-steel refining device for containing and refining molten steel poured into the molten-steel supply device, wherein the method comprises: a molten-steel pouring step in which molten steel is poured from the molten-steel supply device into the molten-steel refining device; a droplet-forming step in which the molten steel which has been poured in is formed into droplets in the molten-steel refining device; a slag-pass-through step in which the molten steel which has been formed into droplets is dropped so as to pass through slag; and an inclusion-removing step in which residual inclusions in the molten steel, which has been formed into droplets, are removed while passing through the slag.

摘要翻译： 本发明涉及一种具有优异清洁度的钢水生产方法和精炼装置，更具体地说，提供了一种用于在连续铸造工艺中在预处理过程中从钢水中形成液滴并将其滴入炉渣中来精炼夹杂物的方法和装置 炼钢工艺。 另外，本发明提供一种高清洁度钢水的制造方法，其特征在于，包括供给钢水的钢水供给装置和钢水供给装置的钢水精炼装置， 包括：钢水浇注步骤，其中钢水从钢水供应装置注入钢水精炼装置; 液滴形成步骤，其中已经注入的钢水在钢水精炼装置中形成液滴; 通过使通过炉渣而成形为液滴的钢水落渣的渣渣通过工序; 以及夹杂物除去工序，其中已经形成为液滴的钢水中的残留夹杂物在通过炉渣时被除去。

公开(公告)号：EP3835437A1

公开(公告)日：2021-06-16

申请号：EP18929550.4

申请日：2018-12-18

申请人： POSCO

发明人： LEE, Sang Beom ,  LEE, Rak Do ,  HAN, Sang Hun ,  JEONG, Eun Ju ,  YOON, Sang Hyeon ,  HAN, Seung Min ,  KIM, Wan Yi

IPC分类号： C21C7/072 ,  B22D1/00

摘要： The present invention relates to a method for treating molten steel and an apparatus therefor, and the method may include preparing molten steel in a container, supplying a stirring gas to the container to stir the molten steel, measuring a first vibration amplitude (Btl) occurring in the container, and determining a path for supplying the stirring gas according to the measured first vibration amplitude (Bt1), wherein a nozzle clogging phenomenon due to inclusions or an occurrence of defect such as a crack in a product may be suppressed in casting by effectively removing inclusions in the molten steel.

公开(公告)号：EP2851439B1

公开(公告)日：2019-03-06

申请号：EP13790587.3

申请日：2013-05-13

申请人： POSCO

发明人： CHOI, Ja Yong ,  HAN, Seung Min ,  KIM, Sun Koo ,  LEE, Hee Ho ,  JUNG, Sang Yuel ,  SEO, Young Jong

IPC分类号： C21C7/076 ,  C21C7/00 ,  B22D1/00 ,  B22D11/118 ,  B22D41/08 ,  B22D11/116 ,  C21C7/06