Title:
転炉吹錬用上吹きランスおよび溶銑の精錬方法
Document Type and Number:
Japanese Patent JP6721129
Kind Code:
B2
Abstract:
The present invention satisfies 0.19 ≤ L/L0 ≤ 0.82, where L0, given a cross section including the center axis of a lance and bisecting a boundary plane between a flow path of a lance inner tube and a nozzle hole, is the length of a line segment which passes through the most downstream point of the lance on the boundary plane and traverses the nozzle hole on a straight line perpendicular to the lance center axis, and L is the length of said traversing line segment when projected within the range of the flow path of the lance inner tube on a horizontal cross section taken perpendicular to the lance center axis.
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Inventors:
Tamura Teppei
Shinpei Ono
Shinpei Ono
Application Number:
JP2019538062A
Publication Date:
July 08, 2020
Filing Date:
August 08, 2018
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C21C5/46; C21C5/35
Domestic Patent References:
| JP2012117126A | ||||
| JP2001316714A | ||||
| JP2003328027A | ||||
| JP201757468A | ||||
| JP201757469A |
Foreign References:
| WO2013094634A1 |
Attorney, Agent or Firm:
Takayoshi Kokubun