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Separation of Lithium from Aluminum and Sodium.

Authors
Schultze-LE
Source
U S Appl 460 201 Sept 2 1983 :9 pages
Link
NIOSHTIC No.
10011988
Abstract
Lithium, aluminum, and sodium are recovered from brines by addition of an aluminum salt and an alkaline reagent to precipitate the metals, followed by dissolution in hcl. The lithium is separated from aluminum and sodium in the hcl solution by sparging with gaseous hcl to precipitate al and na chlorides while leaving lithium chloride in solution. Thus, alcl3 and ca(oh)2 were added to a brine to bring the ph to 7.5. The precipitate, which contained al 7.7, Li 0.77, and na 3.6 pct, was dissolved by addition of hcl to give a ph of 0.2. Sparging with hcl gas to an acidity of 11n hcl precipitated alcl3.6H2o and nacl, giving almost complete separation of li, al, and na.
Publication Date
19830101
Document Type
PA;
Fiscal Year
1983
NTIS Accession No.
NTIS Price
NIOSH Division
RERC;
Source Name
U.S. Appl. 460,201, Sept. 2, 1983, 9 PP., Chem. Abstr. 99:162,058W
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