NOZZLE AND MANUFACTURING METHOD THEREFOR

WIPO Patent Application WO/2018/074659

A1

A nozzle according to the present invention comprises: a nozzle body having an internally hollow part through which molten steel can move, and having a discharge port through which the molten steel can move to the outside of the internally hollow part; and a liner provided so as to surround at least a part of the inner wall of the nozzle body, wherein the liner is made of a raw material comprising calcium oxide (CaO) stabilized zirconia (CSZ) and a sintering additive for inducing sintering of calcium oxide (CaO) stabilized zirconia (CSZ). Thus, according to the embodiments of the present invention, a liner is manufactured by using a sintering additive in a solid electrolyte to induce sintering of the solid electrolyte, such that it is possible to prevent the deterioration of oxygen ion conductivity or improve oxygen ion conductivity as compared to the prior art. In addition, since graphite (C) is not contained in the raw material for producing the liner according to the embodiments of the present invention, it is not necessary to coat an inner wall surface with an antioxidant. Therefore, it is possible to prevent the problem of oxygen ion conductivity deterioration caused by the antioxidant.

JP2002035904	REFRACTORY FOR CONTINUOUS CASTING
JP5166302	Nozzle for continuous casting
JPH0332454	METHOD FOR REMOVING ALUMINA SERIES INCLUSION AND LONG NOZZLE FOR LADLE

KIM WOOK (KR)

PCT/KR2016/014738

April 26, 2018

December 15, 2016

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POSCO (KR)

B22D41/54; B22D11/103; C04B35/48; C04B35/64

KR20160059229A	2016-05-26
KR20050022108A	2005-03-07
KR20010098628A	2001-11-08
KR20150100849A	2015-09-02
JP2006068798A	2006-03-16

See also references of EP 3527305A4

NAM, Seung-Hee (KR)

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