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Electro slag crucible melting for recycling of low oxygen high conductivity copper scrap

DSpace at IIT Bombay

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Title Electro slag crucible melting for recycling of low oxygen high conductivity copper scrap
 
Creator PRASAD, VVS
RAO, VR
PRAKASH, U
RAO, PK
GUPT, KM
 
Subject low oxygen high conductivity copper
electro slag crucible melting
scrap recycling
slag selection
 
Description Recycling of oxygen free high conductivity (OFHC) copper scrap was carried out through a modified electro slag melting technique using a graphite electrode and graphite crucible. Of the three slags used, a cryolite based slag was found to yield copper ingots with low (2 to 40 ppm) oxygen content and high (up to 98% IACS) conductivity. A slag as well as graphite of high purity are essential since the impurities present in the slag and graphite may contaminate the copper during melting. Possible mechanisms of impurity (Fe, Si, Mg, Ca and S) pick-up by copper are discussed. Identical results were obtained using cathode copper instead of OFHC copper scrap indicating that the process may be used to produce low oxygen high conductivity copper ingots directly from cathode copper.
 
Publisher IRON STEEL INST JAPAN KEIDANREN KAIKAN
 
Date 2011-08-04T05:38:16Z
2011-12-26T12:54:34Z
2011-12-27T05:42:38Z
2011-08-04T05:38:16Z
2011-12-26T12:54:34Z
2011-12-27T05:42:38Z
1996
 
Type Article
 
Identifier ISIJ INTERNATIONAL, 36(9), 1113-1118
0915-1559
http://dx.doi.org/10.2355/isijinternational.36.1113
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9260
http://hdl.handle.net/10054/9260
 
Language en