Main Title |
Copper recovery from brass mill discharge by cementation with scrap iron / |
Author |
Case, Oliver P.,
|
CORP Author |
Anaconda American Brass Co., Waterbury, Conn.;National Environmental Research Center, Cincinnati, Ohio. |
Publisher |
National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency, |
Year Published |
1975 |
Report Number |
EPA-670/2-75-029; EPA-S-803226; EPA-ROAP-21-AZO; 23 |
Stock Number |
PB-241 822 |
OCLC Number |
01671106 |
Subjects |
Brass industry and trade--Waste disposal ;
Brass--Recycling
|
Additional Subjects |
Copper ;
Materials recovery ;
Industrial waste treatment ;
Metal finishing ;
Water pollution ;
Water reclamation ;
Brasses ;
Metal scrap ;
Iron ;
Chemical cleaning ;
Cost estimates ;
Precipitation(Chemistry) ;
Chromium ;
Reduction(Chemistry) ;
Water pollution control ;
Brass miles
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 670-2-75-029 |
|
Headquarters Library/Washington,DC |
12/31/2014 |
ELBD ARCHIVE |
EPA 670-2-75-029 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD RPS |
EPA 670-2-75-029 |
repository copy |
AWBERC Library/Cincinnati,OH |
01/16/2018 |
NTIS |
PB-241 822 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
viii, 51 pages : illustrations ; 27 cm. |
Abstract |
This report presents the results of studies of copper recovery (and incidental reduction of hexavalent chromium) in brass mill discharge by passage of the discharge over scrap iron in a rotating drum. The drum feed consisted of normal production discharge of combined pickle rinse water and spent sulfuric acid and sulfuric acid-bichromate pickle. About half of the total mill waste discharge over a period of 16 weeks was processed. Four modes of drum operation were studied: (1) continuous rotation, (2) no rotation, (3) intermittent rotation (1 hr off - 5 min on), and (4) intermittent rotation (2-1/2 hr off - 10 min on). Each mode was studied at two flow levels and two scrap iron surface area levels. Data were evaluated in terms of percent cementation of available copper, excess iron consumption over theoretical, and completeness of chromium reduction. Results indicate that the over-riding factor in the efficiency of copper cementation is the level of copper in the feed solution. Hexavalent chromium is effectively reduced providing the pH is below 2.5. |
Notes |
Report prepared by The Anaconda Co. -- Brass Division, Research and Technical Center, Waterbury, Connecticut. Grant no. S-803226-01-0; program element no. 1BB036. Includes bibliographical references (page 38). |