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Recovery of Nickel-cobalt Alloy from Superalloy Scrap.

Authors
Holman-JH; Molloy-SA; Neumeier-LA
Source
The Metall Soc 1987 :347-360
Link
NIOSHTIC No.
10006059
Abstract
This paper describes Bureau of Mines investigations of recovery of ni, CO, cr, and other metals from mixed contaminated superalloy scrap. The scrap is melt-refined and cast into anodes for electrodeposition of recyclable ni-co alloy. Melt oxidation using roasted superalloy grinding sludge as oxygen source can divert the cr to the slag but with excessive ni-co loss. Melt oxidation- carburization or direct melt carburization retains approx. 95 pct of the ni-co in the anode alloy.
Publication Date
19870101
Document Type
OP;
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
OP 55-88
NIOSH Division
RORC;
Source Name
The Metall. Soc., 1987, PP. 347-360
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