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Evaporative Crystallization of Aluminum Chloride Hexahydrate.

Authors
Nehl-FH; Nicks-LJ
Source
NTIS: PB 92-209261 Available for Reference At Bureau Libraries :11 pages
Link
NIOSHTIC No.
10011649
Abstract
As part of a U.S. Bureau of Mines research program to study processes for extraction of alumina from domestic resources, a bench- scale evaporate crystallizer was operated with solutions of impure aluminum chloride hexahydrate (ach). The purpose of the research was to determine the distribution of impurities in the bleedstream section of a proposed clay-hcl process. Impurities including mg, p, na, k, cr, and s were determined in ach crystals produced from feed solutions with a threefold range of impurities and at varied crystallizer slurry percent solids. Phosphorus was the limiting contaminant; 0.83 pct of the process alumina would have to be discarded for control. Crystallizer slurry in the range of 10 to 25 pct solids had little effect on crystal purity.
Publication Date
19920101
Document Type
CP;
Fiscal Year
1992
NTIS Accession No.
PB92-209261
NTIS Price
A03
Identifying No.
OFR 84-92
NIOSH Division
RERC;
Source Name
NTIS: PB 92-209261; Available for Reference At Bureau Libraries
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