Main Title |
Utilization of lime/limestone waste in a new alumina extraction process / |
Author |
Motley, E.P. ;
Cosgrove, T. H.
|
Other Authors |
|
CORP Author |
TRW, Inc., Redondo Beach, CA.;Industrial Environmental Research Lab., Research Triangle Park, NC. |
Publisher |
Environmental Protection Agency, Office of Research and Development; For sale by the National Technical Information Service, |
Year Published |
1978 |
Report Number |
EPA-600/7-78-225; EPA-68-02-2613 |
Stock Number |
PB-290 105 |
OCLC Number |
755811068 |
Subjects |
Limestone ;
Aluminum oxide
|
Additional Subjects |
Aluminum oxide ;
Industrial wastes ;
Extraction ;
Utilization ;
Calcium oxides ;
Limestone ;
Kaolin ;
Sodium carbonates ;
Coal ;
Sulfur ;
Calcium silicates ;
Economic analysis ;
Waste utilization
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
ELBD ARCHIVE |
EPA 600-7-78-225 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
NTIS |
PB-290 105 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
viii, 49 p. : ill. ; 28 cm. |
Abstract |
The report gives results of a preliminary process design and economic evaluation of a process for using lime/limestone scrubbing wastes as a source of calcium in the extraction of alumina (for use in aluminum production) from low grade domestic ores such as clays and coal ash. The other principal process feedstocks are soda ash and coal. The products are alumina, elemental sulfur, and dicalcium silicate, an alternate feedstock in the manufacture of portland cement. The conceptual plant is located next to a 1000 MW coal-burning power plant which generates > 1 million tons per year (tpy) of lime/limestone scrubber wastes. The required selling price for the alumina produced at 10% discounted cash flow would be $195-370 per ton, depending on the credit for sludge removal, exclusive of cement manufacture. If the alumina plant were co-located with an 860,000 tpy portland cement plant selling cement at $50 per ton, the required alumina selling price would be $27-221 per ton. Based on the current market price for alumina ($160 per ton), the portland cement plant appears to be necessary to make the process viable. In addition to the scrubber wastes, the process requires 12,000 tpy of soda ash, 300,000 tpy of clay, and 273,000 tpy of coal to produce 70,000 tpy of alumina, 156,000 tpy of sulfur, and 625,000 tpy of dicalcium silicate (used to produce 860,000 tpy of portland cement). |
Notes |
Issued November 1978. Includes bibliographical references (p. 45-46). |
Place Published |
Washington, D.C. Springfield, Va. |
Corporate Au Added Ent |
United States. Environmental Protection Agency. Office of Research and Development. |
Corp Au Ser Add Ent |
United States. Environmental Protection Agency. Interagency energy-environment research and development program report ; EPA-600/7-78-225. |
NTIS Title Notes |
Final task rept. Apr-Sep 78. |
PUB Date Free Form |
1978 |
Series Title Untraced |
Interagency energy-environment research and development program report ; EPA-600/7-78-225 |
Category Codes |
8I; 7A; 48A; 99B; 68C |
NTIS Prices |
PC A04/MF A01 |
Primary Description |
600/13 |
BIB Level |
m |
Cataloging Source |
OCLC/T |
Merged OCLC records |
966821073 |
Control Number |
323754665 |
OCLC Time Stamp |
20150521171338 |
Language |
eng |
Origin |
OCLC |
Type |
MERGE |
OCLC Rec Leader |
01572cam 2200325Ki 45020 |