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Producing Alumina from Clay by the Hydrochloric Acid Process, a Bench-scale Study.

Authors
Eisele-JA
Source
MISSING :21 pages
Link
NIOSHTIC No.
10006913
Abstract
The Bureau of Mines conducted bench-scale cyclic tests to determine the composition of recycled leach liquor in the Bureau's proposed clay/hcl leach/hcl sparge process for producing al2o3 from clay. The data developed from these tests make it possible to synthesize leach liquors for predetermined steady-state operating conditions when conducting large-scale crystallization tests. The results of two sparge tests were compared. One was a 20-cycle test with a 36- pct-hcl concentration in the mother liquor; the other was a 10-cycle test with a 26-pct-hcl concentration in the mother liquor. The effect of impurity concentrations in the leach liquor on the purity of aluminum chloride (alcl3.6H2o) crystals was determined, but there was poor correlation between these data and results that have been obtained from miniplant-scale work.
Publication Date
19800101
Document Type
IH; Report of Investigation;
Fiscal Year
1980
NTIS Accession No.
NTIS Price
Identifying No.
RI 8476
NIOSH Division
RERC;
Source Name
MISSING
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