Title:
DISCHARGING HOLE FOR MOLTEN METAL IN MOLTEN METAL CONTAINER, METHOD OF OPERATING CONVERTER WITH THE DISCHARGING HOLE, AND SLEEVE EXCHANGING DEVICE AT DISCHARGING HOLE OF MOLTEN METAL CONTAINER
Document Type and Number:
WIPO Patent Application WO/2006/011269
Kind Code:
A1
Abstract:
A discharging hole for a molten metal in a molten metal container for a converter and others, particularly a discharging hole for the molten metal using a sleeve-like refractory, capable of reducing an averaged discharge time to increase the operating efficiency of the converter and others. The discharging hole comprises an upper sleeve (32) fitted to the lined refractory of the converter and a lower sleeve (33) detachably installed on the lower end part of the upper sleeve. The cross sectional area of the inner hole of the lower sleeve (33) obtained after use is set to 60 to 98% of the cross sectional area of the inner hole thereof obtained at its exchange.
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Inventors:
EBISAWA HIROSHI (JP)
FUNATO JUNICHI (JP)
KAWANO YASUO (JP)
FUNATO JUNICHI (JP)
KAWANO YASUO (JP)
Application Number:
PCT/JP2005/005567
Publication Date:
February 02, 2006
Filing Date:
March 25, 2005
Export Citation:
Assignee:
KROSAKIHARIMA CORP (JP)
EBISAWA HIROSHI (JP)
FUNATO JUNICHI (JP)
KAWANO YASUO (JP)
EBISAWA HIROSHI (JP)
FUNATO JUNICHI (JP)
KAWANO YASUO (JP)
International Classes:
B22D41/56; C21C5/46; F27B14/18; F27D1/08; F27D3/14; (IPC1-7): C21C5/46; B22D41/56; F27B14/18; F27D1/08; F27D3/14
Foreign References:
| JPS49120813A | 1974-11-19 | |||
| JPH11293323A | 1999-10-26 | |||
| JPH0931520A | 1997-02-04 |
Attorney, Agent or Firm:
Kohori, Susumu (1-1 Hakataekimae 1-chome, Hakata-k, Fukuoka-shi Fukuoka 11, JP)
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