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Patent Searching and Data


Title:
METHOD FOR MELTING AND REFINING NOZZLE METAL HAVING HIGH MELTING POINT OR ALLOY CONTAINING SAID METAL
Document Type and Number:
Japanese Patent JPS62240725
Kind Code:
A
Abstract:

PURPOSE: To enable the manufacture of a noble metal having a high m.p. regarded as a hardly refinable metal or an alloy contg. the noble metal by carrying out melting and refining in a vessel lined with a calcic refractory.

CONSTITUTION: When a noble metal having a high m.p. or an alloy contg. the noble metal is melted and refined, melting and refining are carried out in a vessel lines with a calcic refractory. The calcic refractory may be a CaO- base refractory such as electromelted calcia or calcine calcia or CaO enriched dolomite. By this method, a noble metal having a high m.p. regarded as a hardly refinable metal or an alloy contg. the noble metal is obtd. without causing contamination by the penetration of C. The noble metal is Ru, Rh, Pd, Os, Ir, Pt, Tc or Re.


Inventors:
DEGAWA TORU
FUJIWARA KOZO
SATO TAKASHI
Application Number:
JP1986000085544
Publication Date:
October 21, 1987
Filing Date:
April 14, 1986
Export Citation:
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Assignee:
MITSUI SHIPBUILDING ENG
International Classes:
B22D41/02; C22C1/02; (IPC1-7): B22D41/02; C22C1/02