MANAGEMENT METHOD OF MOLTEN STEEL LADLE

Title:

MANAGEMENT METHOD OF MOLTEN STEEL LADLE

Document Type and Number:

Japanese Patent JP2016185552

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a management method of a molten steel ladle capable of efficiently managing the molten steel ladle by accurately predicting wearing.SOLUTION: The wearing speed V[m/s] of a slag line refractory 3c is predicted from equation (1): V=KρΔ(wt%A)/100ρ(1) and equation (2): K=eV(2) using numerical value coefficients such as a [-] and e [ms] (where, K [m/s] is a mass transfer coefficient; ρ[kg/m] is slag density; ρ[kg/m] is the density of the slag line refractory 3c; A is the component of the slag line refractory 3c eluting into slag during refining treatment; Δ(wt%A) [%] is difference between the saturation concentration to the slag of the component A and the concentration of the component A in the slag; and V[m/s] is the flow rate of the slag in a tangential direction in the vicinity of the operation surface of the slag line refractory 3c).SELECTED DRAWING: Figure 1

Inventors:

KUROSAWA EISUKE

Application Number:

JP2015066190A

Publication Date:

October 27, 2016

Filing Date:

March 27, 2015

Export Citation:

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Assignee:

KOBE STEEL LTD

International Classes:

B22D41/00; B22D1/00; B22D41/02; B22D46/00; C21C7/00; F27D21/00

Domestic Patent References:

JP2012223776A	2012-11-15
JPH0849012A	1996-02-20
JP2005325394A	2005-11-24
JP2012223776A	2012-11-15
JPH0849012A	1996-02-20
JP2005325394A	2005-11-24

Other References:

桐原　史明、　他３名: "カルシウムシリケートスラグ中への固体石灰の溶解速度に及ぼす第三成分（アルミナ，マグネシアまたはフッ化", 鉄と鋼, vol. Ｖｏｌ．１００　Ｎｏ．１１, JPN6018013613, 2014, pages ｐ．１５−２４
桐原　史明、　他３名: "カルシウムシリケートスラグ中への固体石灰の溶解速度に及ぼす第三成分（アルミナ，マグネシアまたはフッ化", 鉄と鋼, vol. Ｖｏｌ．１００　Ｎｏ．１１, JPN6018013613, 2014, pages ｐ．１５−２４

Attorney, Agent or Firm:

Kaji/Suhara Patent Office

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