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Hydrothermal precipitation of boehmite from aluminum chloride solutions.

Authors
Krishnan-GN; Bartlett-RW
Source
For Reference Only At Bureau Libraries, 1980; :1-30
Link
NIOSHTIC No.
10007146
Abstract
This report summarizes the results of Phase I of a program to study the precipitation of boehmite from AlCl3 solutions. The amount of boehmite precipitation from dilute AlCl3 solutions is negligible below 200 degrees C. Above 200 degrees C the precipitation increases with increasing temperature approaching 40 pct at 300 degrees C. Addition of HCl acid to the dilute AlCl3 solution even in small quantities drastically reduces boehmite precipitation. Solution impurities such as FE, CA, MG, or NA substantially promote the precipitation of boehmite. No precipitation is observed from concentrated AlCl3 solution representing the leach liquor.
Keywords
Mining-industry; Aluminum-compounds; Chlorides; Hydrodynamics; Thermodynamics; Aluminum-oxides; Hydroxides; Temperature-effects; Acids; Minerals
CAS No.
7446-70-0; 1318-23-6; 7647-01-0
Publication Date
19800101
Document Type
CP; Final Contract Report
Funding Type
Contract
Fiscal Year
1980
NTIS Accession No.
NTIS Price
Identifying No.
OFR 121-80
NIOSH Division
RERC
Source Name
For Reference Only At Bureau Libraries
State
CA
Performing Organization
SRI International, Menlo Park, California
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