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Recycling and metal recovery technology for stainless steel pickling liquors.

Authors
Stephenson-JB; Hogan-JC; Kaplan-RS
Source
Environ Prog 1984 Feb; 3(1):50-53
NIOSHTIC No.
10003405
Abstract
Most stainless steels require a final treatment in nitric and/or hydrofluoric acid pickling baths for the removal of oxide scales formed during processing to final gauge and shape. These pickling baths become ineffective as their metal content increases. The baths appear to be particularly sensitive to the concentration of iron. Conventional operating procedures call for the replacement and disposal of the spent acids. The high cost of waste acid disposal and the loss of the valuable nickel and chromium they contain are important considerations. This review covers recovery and recycling processes for spent nitric and hydrofluoric acid pickle liquors generated during the production of stainless steels.
Keywords
Waste-treatment; Acids; Steel-industry; Stainless-steel; Metals
CODEN
ENVPDI
Publication Date
19840201
Document Type
OP; Journal Article
Fiscal Year
1984
NTIS Accession No.
NTIS Price
Identifying No.
OP 18-84
Issue of Publication
1
ISSN
0278-4491
NIOSH Division
RORC
Source Name
Environmental Progress
State
MO; OH; DC
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