Report of Investigations 8908: A Strong Acid-Weak Acid Method for Producting Aluminum Chlorine Hexahydrate from Kaolinitic Clay

Bauer, Donald J.; Eisele, Judith A.; Shanks, Donald E.

i

Report of Investigations 8908: A Strong Acid-Weak Acid Method for Producting Aluminum Chlorine Hexahydrate from Kaolinitic Clay

Public Domain

1984/01/01
By Bauer, Donald J. ; Eisele, Judith A. ; Shanks, Donald E.
Series: NIOSH Numbered Publications

File Language:

English

Details

Journal Article:

MISSING
Personal Author:

Bauer, Donald J. ; Eisele, Judith A. ; Shanks, Donald E.
Description:

The Bureau of Mines has conducted extensive studies on the recovery of alumina from kaolinitic clay by a hcl leaching-hcl sparging process. The current study reports a modification of the process, which involves a double-leaching system. The first leach of the calcined clay is made at as high a hcl acid strength as possible so that the dissolution of aluminum chloride hexahydrate (alcl3.6H2o) is suppressed. Most of the impurities, but very little aluminum, are soluble in the strong acid. After liquid-solid separation and washing, the solids are leached with recycled weak hcl, which dissolves the alcl3.6H2o. The pregnant liquor is separated from the gangue, and alcl3.6H2o is crystallized from solution by injecting hcl gas. A proposed flowsheet is presented, and the effect of bleedstream size on alcl3.6H2o purity is discussed. [Description provided by NIOSH]
Subjects:

Aluminum Compounds Metals Mining Occupational Health Safety
Source:

MISSING :7 pages
Series:

NIOSH Numbered Publications ; Mining Publications
Subseries:

Report of Investigations
Document Type:

Text
Genre:

Report
Place as Subject:

United States
CIO:

National Institute for Occupational Safety and Health (NIOSH)
Division:

RERC - Reno Research Center
Topic:

Workplace Safety & Health
Location:

North America
Pages in Document:

12 pdf pages
NIOSHTIC Number:

nn:10004146
Federal Fiscal Year:

1984
Peer Reviewed:

False
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

urn:sha-512:98f7a3c4aeefb904e6a6cc1dba2c74294d43d85cfde89ff8f21d31f46817200611fb6c4b2bfab7cf4781cdfaa5cfaba8201028d5be3931919ccae54c68d5e0f1
Download URL:

https://stacks.cdc.gov/view/cdc/10292/cdc_10292_DS1.pdf
File Type:

[PDF - 565.65 KB ]

File Language:

English

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