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A Process for Producing Aluminum and Silicon Alloys.

Authors
Sullivan-TA; Singleton-EL; Johnson-ML
Source
U S Pat 3 798 140 1974 Mar; :
Link
NIOSHTIC No.
10011976
Abstract
A method is provided for separating aluminum from al-si alloys produced by smelting aluminum silicate ores. The anode residue is leached to produce metallurgical-grade silicon. Thus, 50.0 Al-45.8 Si-0.3 pct fe was processed by using a nacl-kcl-alcl3 electrolyte at 750 deg. C. The electrolyte was an equimolar mixture of nacl and kcl to which 10 pct alcl3 was added to provide the al carrier ion. Al (99.98 pct) was prepared. An al recovery of 82 pct and a cathode efficiency of 98 pct was achieved. In theory, the process involves selective electrooxidation of al from the al-si anode and simultaneous reduction of al at the cathode.
Publication Date
19740301
Document Type
PA;
Fiscal Year
1974
Identifying No.
PAT 3,798,140
NIOSH Division
BCEL;
Source Name
U.S. Pat. 3,798,140; Mar. 19, 1974; Chem. Abstr. 81:28,105J
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division